581B036--072
581C024--060
SINGLE-PACKAGE ROOFTOP HEATING/COOLING
STANDARD AND LOW NOx UNITS
Installation Instructions
TABLE OF CONTENTS
literature, tags and labels attached to the unit, and other safety
precautions that may apply.
Page
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . . 1
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Follow all safety codes. Wear safety glasses and work gloves. Use
quenching cloth for unbrazing operations. Have fire extinguishers
available for all brazing operations.
1
Step 1--Provide Unit Support . . . . . . . . . . . . . . . . . . . . . . . 2
ROOF CURB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
SLAB MOUNT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
ALTERNATE UNIT SUPPORT . . . . . . . . . . . . . . . . . 2
Recognize safety information. This is the safety--alert symbol
. When you see this symbol on the unit and in instructions or
manuals, be alert to the potential for personal injury.
Understand the signal words DANGER, WARNING, and
CAUTION. These words are used with the safety--alert symbol.
DANGER identifies the most serious hazards which will result in
severe personal injury or death. WARNING signifies a hazard
which could result in personal injury or death. CAUTION is used
to identify unsafe practices which may result in minor personal
injury or product and property damage. NOTE is used to
highlight suggestions which will result in enhanced installation,
reliability, or operation.
Step 2--Field Fabricate Ductwork . . . . . . . . . . . . . . . . . . .
2
Step 3--Install External Trap for Condensate Drain . . . . . . . 2
Step 4--Rig and Place Unit . . . . . . . . . . . . . . . . . . . . . . . . . 2
POSITIONING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Step 5 — Install Flue Hood . . . . . . . . . . . . . . . . . . . . . . . . 4
Step 6 — Install Gas Piping . . . . . . . . . . . . . . . . . . . . . . . . 4
Step 7 — Make Electrical Connections . . . . . . . . . . . . . . . . 8
FIELD POWER SUPPLY . . . . . . . . . . . . . . . . . . . . . . 8
FIELD CONTROL WIRING . . . . . . . . . . . . . . . . . . . . 8
HEAT ANTICIPATOR SETTINGS . . . . . . . . . . . . . . . 8
Step 8 — Adjust Factory-Installed Options . . . . . . . . . . . 16
!
WARNING
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could cause personal
injury or death.
Before performing service or maintenance operations
on unit, turn off main power switch to unit and install
lockout tag. Ensure electrical service to rooftop unit
agrees with voltage and amperage listed on the unit
rating plate.
PERFECT HUMIDITY™ ADAPTIVE
DEHUMIDIFICATION SYSTEM . . . . . . . . . . . . . . 16
MANUAL OUTDOOR-AIR DAMPER . . . . . . . . . . 16
CONVENIENCE OUTLET . . . . . . . . . . . . . . . . . . . . 16
OPTIONAL ECONOMI$ER IV . . . . . . . . . . . . . . . . 18
ECONOMI$ER IV STANDARD SENSORS . . . . . . 19
ECONOMI$ER IV CONTROL MODES . . . . . . . . . 20
Step 9 — Adjust Evaporator-Fan Speed . . . . . . . . . . . . . . 25
PRE--START--UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
START--UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
START--UP CHECKLIST . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
!
WARNING
FIRE, EXPLOSION HAZARD
Failure to follow this warning could cause death and/or
property damage.
Disconnect gas piping from unit when leak testing at
1
1
pressure greater than / psig. Pressures greater than /
2
2
psig will cause gas valve damage resulting in hazardous
condition. If gas valve is subjected to pressure greater
1
than
/
2
psig, it must be replaced before use. When
pressure testing field-supplied gas piping at pressures of
/ psig or less, a unit connected to such piping must be
isolated by manually closing the gas valve(s).
1
2
SAFETY CONSIDERATIONS
Installation and servicing of air-conditioning equipment can be
hazardous due to system pressure and electrical components.
Only trained and qualified service personnel should install, repair,
or service air-conditioning equipment.
INSTALLATION
Unit is shipped in the vertical discharge configuration. To convert
to horizontal discharge application, remove duct opening covers.
Using the same screws, install covers on duct openings in
basepan of unit with insulation-side down. Seals around
openings must be tight. (See Fig. 1.)
Untrained personnel can perform basic maintenance functions of
cleaning coils and filters and replacing filters. All other operations
should be performed by trained service personnel. When working
on air-conditioning equipment, observe precautions in the
1
D ALT
DRAIN
HOLE
ROOF CURB
ACCESSORY
UNIT
SIZE
CONNECTOR
PKG. ACCY.
ACCESSORY
POWER
A
B
C
GAS
POWER
CONTROL
1 -2
[356]
2 -0
[610]
CRRFCURB001A01
CRRFCURB002A01
3
3
3
CRBTMPWR001A01
CRBTMPWR002A01
/
[19] NPT
4
/
581B036-072
581C024-060
[19] 4NPT
11/4 [31.7]
1 -911
/
1 -4
13/4
[44.5]
/
/
2
1
1
1
[5511]6 [406]
[12.7]
[12.7]
2
/
2
CRBTMPWR003A01
CRBTMPWR004A01
/
[19] NPT
4
[12.7] NPT
3
/
[19] 4NPT
NOTES:
11/4 [31.7]
1. Roof curb accessory is shipped disassembled.
2. Insulated panels.
3. Dimensions in [ ] are in millimeters.
4. Roof curb: galvanized steel.
5. Attach ductwork to curb (flanges of duct rest
on curb).
6. Service clearance: 4 ft on each side.
7.
Direction of airflow.
8. Connector packages CRBTMPWR001A01
and 002A01 are for thru-the-curb type gas.
Packages CRBTMPWR003A01 and 004A01
are for thru-the-bottom type gas connections.
C06345
Fig. 2 --- Roof Curb Details
3
MAXIMUM ALLOWABLE
DIFFERENCE (in.)
CONDENSATE PAN (SIDE VIEW)
HORIZONTAL
DRAIN OUTLET
A-B
0.5
B-C
1.0
A-C
1.0
DRAIN PLUG
NOTE: Drain plug is shown in factory-installed position.
C06003
Fig. 4 --- Condensate Drain Pan
C06110
Fig. 3 --- Unit Leveling Tolerances
Be sure that unit is installed such that snow will not block the
combustion intake or flue outlet.
Unit may be installed directly on wood flooring or on Class A, B,
or C roof-covering material when roof curb is used.
Although unit is weatherproof, guard against water from higher
level runoff and overhangs.
Locate mechanical draft system flue assembly at least 48 in. from
an adjacent building or combustible material. When unit is
located adjacent to public walkways, flue assembly must be at
least 7 ft above grade.
NOTE: When unit is equipped with an accessory flue discharge
deflector, allowable clearance is 18 inches.
NOTE: Trap should be deep enough to offset maximum unit static
difference. A 4-in. trap is recommended.
Flue gas can deteriorate building materials. Orient unit such that
flue gas will not affect building materials.
C06004
Adequate combustion-air space must be provided for proper
operation of this equipment. Be sure that installation complies
with all local codes and Section 5.3, Air for Combustion and
Ventilation, NFGC (National Fuel Gas Code), ANSI (American
National Standards Institute) Z223.1-1984 and addendum
Z223.1a-1987. In Canada, installation must be in accordance with
the CAN1.B149.1 and CAN1.B149.2 installation codes for gas
burning appliances.
Flue vent discharge must have a minimum horizontal clearance of
4 ft from electric and gas meters, gas regulators, and gas relief
equipment.
After unit is in position, remove shipping materials and rigging
skids.
Fig. 5 --- Condensate Drain Piping Details
Step 6 —Install Gas Piping
Unit is equipped for use with type of gas shown on nameplate.
Refer to local
building codes, or in the absence of local codes,
to ANSI Z223.1-1984 and addendum Z223.1A-1987 entitled
National Fuel Gas Code. In Canada, installation must be in
accordance with the CAN1.B149.1 and CAN1.B149.2
installation codes for gas burning appliances.
For natural gas applications, gas pressure at unit gas connection
must not be less than 4 in. wg or greater than 13 in. wg while the
unit is operating. On 581B036--072 and 581C036--060 high-heat
units, the gas pressure at unit gas connection must not be less than
5 in. wg or greater than 13 in. wg while the unit is operating. For
propane applications, the gas pressure must not be less than 5 in.
wg or greater than 13 in. wg at the unit connection.
Step 5 —Install Flue Hood
Flue hood is shipped screwed to the burner compartment access
panel. Remove from shipping location and, using screws
provided, install flue hood in location shown in Fig. 8 and 9.
For units being installed in California Air Quality Management
Districts which require NOx emissions of 40 nanograms/joule or
less, a low NOx unit must be installed.
Size gas supply piping for 0.5 in. wg maximum pressure drop.
Do not use supply pipe smaller than unit gas connection.
NOTE: Low NOx units are available for 2 to 5 ton units.
4
NOTES:
1. Place unit on curb as close as possible to the duct end.
2. Dimension in ( ) is in millimeters.
3. Hook rigging shackles through holes in base rail as shown in detail “A.” Holes in base rails are centered around the unit center of gravity. Use wooden top skid
when rigging to prevent rigging straps from damaging unit.
4. Weights include base unit without economizer. See Table 1 for unit operating weights with accessory economizer.
5. Weights include base unit without the Perfect Humidityt adaptive dehumidification system. See Table 1 for unit operating weights with the Perfect Humidityt
system.
C06111
Fig. 6 --- Rigging Details
OPERATING
WEIGHT
DIMENSIONS
“B”
UNIT
581C
“A”
“A”
“C”
“C”
lb
kg
in.
mm
1872
1872
1872
1872
in.
mm
902
902
902
902
in.
mm
847
847
847
1050
024
036
048
060
73.69
73.69
73.69
73.69
35.50
35.50
35.50
35.50
33.31
33.31
33.31
41.31
530
540
560
635
240
245
254
288
OPERATING
WEIGHT
DIMENSIONS
“B”
UNIT
581B
lb
kg
in.
mm
1872
1872
1872
1872
in.
mm
902
902
902
902
in.
mm
847
847
847
1050
036
048
060
072
530
540
560
635
240
245
254
288
73.69
73.69
73.69
73.69
35.50
35.50
35.50
35.50
33.31
33.31
33.31
41.31
!
WARNING
PROPERTY DAMAGE HAZARD
Failure to follow this warning could result in personal
injury, death and property damage.
All panels must be in place when rigging and lifting.
See Fig. 11 for typical pipe guide and locations of external
manual gas shutoff valve.
NOTE: If accessory thru-the-bottom connections and roof curb
are used, refer to the Thru-the-Bottom Accessory Installation
Instructions for information on power wiring and gas
connection piping. The power wiring, control wiring and gas
piping can be routed through field-drilled holes in the basepan.
The basepan is specially designed and dimpled for drilling the
access connection holes.
C06208
Fig. 7 --- Roof Curb Alignment
!
WARNING
Support gas piping as shown in the table in Fig. 11. For example,
FIRE, EXPLOSION HAZARD
3
a
/ -in. gas pipe must have one field-fabricated support beam
4
Failure to follow this warning could result in personal
injury, death and/or property damage.
every 8 ft. Therefore, an 18-ft long gas pipe would have a
minimum of 3 support beams, and a 48-ft long pipe would have a
minimum of 6 support beams.
When connecting the gas line to the unit gas valve, the
installer MUST use a backup wrench to prevent damage
to the valve.
5
6
7
Field Power Supply
All units except 208/230-v units are factory wired for the voltage
shown on the nameplate. If the 208/230-v unit is to be connected
to a 208-v power supply, the transformer must be rewired by
moving the black wire from the 230-v terminal on the
transformer and connecting it to the 200-v terminal from the
transformer.
Refer to unit label diagram for additional information. Pigtails
are provided for field service. Use factory-supplied splices or UL
(Underwriters’ Laboratories) approved copper connector.
When installing units, provide a disconnect per NEC.
All field wiring must comply with NEC and local
requirements.
Install conduit through side panel openings indicated in Fig. 8.
Route power lines through connector to terminal connections as
shown in Fig. 12.
C06114
Fig. 10 --- Flue Hood Details
Voltage to compressor terminals during operation must be within
voltage range indicated on unit nameplate (also see Tables 3 and
4). On 3-phase units, voltages between phases must be balanced
within 2% and the current within 10%. Use the formula shown in
Tables 3 and 4, Note 3 to determine the percent voltage
imbalance. Operation on improper line voltage or excessive phase
imbalance constitutes abuse and may cause damage to electrical
components. Such operation would invalidate any applicable
Bryant warranty.
NOTE: If accessory thru-the-bottom connections and roof curb
are used, refer to the Thru-the-Bottom Accessory Installation
Instructions for information on power wiring and gas connection
piping. The power wiring, control wiring and gas piping can be
routed through field-drilled holes in the basepan. The basepan is
specially designed and dimpled for drilling the access connection
holes. (See Fig. 2.)
LEGEND
NFGC — National Fuel Gas Code
*Field supplied.
NOTE: Follow all local codes.
Field Control Wiring
SPACING OF SUPPORTS
Install
a
Bryant-approved accessory thermostat assembly
according to installation instructions included with the accessory.
Locate thermostat assembly on a solid wall in the conditioned
space to sense average temperature in accordance with thermostat
installation instructions.
Route thermostat cable or equivalent single leads of colored wire
from subbase terminals through connector on unit to low-voltage
connections (shown in Fig. 13 and 14).
STEEL PIPE
SPACING OF SUPPORTS
NOMINAL DIAMETER (in.)
X DIMENSION (ft)
1
/
6
8
10
2
3/4 or 1
11/4 or larger
C06115
Fig. 11 --- Gas Piping Guide (With Accessory
Thru--the--Curb Service Connections)
Connect thermostat wires to matching screw terminals of
low-voltage connection board. (See Fig. 13 and 14.)
Step 7 —Make Electrical Connections
NOTE: For wire runs up to 50 ft, use no. 18 AWG (American
Wire Gauge) insulated wire (35_C minimum). For 50 to 75 ft, use
no. 16 AWG insulated wire (35_C minimum). For over 75 ft, use
no. 14 AWG insulated wire (35_C minimum). All wire larger
than no. 18 AWG cannot be directly connected to the thermostat
and will require a junction box and splice at the thermostat.
!
WARNING
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal
injury or death.
Pass the control wires through the hole provided in the corner
post; then feed wires through the raceway built into the corner
post to the 24-v barrier located on the left side of the control box.
(See Fig. 15). The raceway provides the UL required clearance
between high and low-voltage wiring.
Unit cabinet must have an uninterrupted, unbroken
electrical ground to minimize the possibility of personal
injury if an electrical fault should occur. This ground
may consist of electrical wire connected to unit ground
lug in control compartment, or conduit approved for
electrical ground when installed in accordance with
NEC (National Electrical Code), ANSI/NFPA (National
Fire Protection Association), latest edition, and local
electrical codes. Do not use gas piping as an electrical
ground.
Heat Anticipator Settings
Set heat anticipator settings at 0.14 amp for first stage and 0.14
for second stage heating, when available.
8
Table 1—Physical Data 581B
BASE UNIT 581B
036
048
060
072
NOMINAL CAPACITY (tons)
OPERATING WEIGHT (lb)
Unit
Perfect Humidity™ Adaptive Dehumidification System
EconoMi$er IV
Roof Curb
COMPRESSOR
Quantity
Oil (oz)
REFRIGERANT TYPE
Expansion Device
Operating Charge (lb-oz)
Standard Unit
Unit With Perfect Humidity Adaptive Dehumidification System
CONDENSER FAN
Quantity...Diameter (in.)
Nominal Cfm
Motor Hp...Rpm
Watts Input (Total)
CONDENSER COIL
Rows...Fins/in.
3
4
5
6
530
15
50
540
23
50
560
25
50
635
29
50
115
115
115
115
Scroll
R-22
1
42
1
53
1
50
1
60
Acutrol™ Metering Device
5-8
12-5
10-2
18-8
10-0
20-5
12- 8
23-14
Propeller
1...22
3500
/ ...825
180
1...22
3500
/ ...825
4
180
1...22
4100
/ ...1100
1...22
4100
/ ...1100
1
1
1
1
4
4
4
320
320
3/8---in. OD Enhanced Copper Tubes, Aluminum Lanced Fins
1...17
14.6
2...17
16.5
2...17
16.5
2...17
21.3
Total Face Area (sq ft)
EVAPORATOR COIL
Standard Unit
3/8---in. OD Enhanced Copper Tubes, Aluminum Double-Wavy Fins
Rows...Fins/in.
2...15
5.5
2...15
5.5
4...15
5.5
4...15
7.3
Total Face Area (sq ft)
Unit with Perfect Humidity Adaptive Dehumidification System
Rows...Fins/in.
Total Face Area (sq ft)
EVAPORATOR FAN
Quantity...Size (in.)
1...17
3.9
2...17
3.9
2...17
3.9
2...17
5.2
Centrifugal Type, Belt Drive
1...10 x 10
1200
1.20
2.40
1620
1725
48
56
1...10 x 10
1600
1.20
1...10 x 10
2000
1.30/2.40*
2.90
1725
1725
48/56*
56
1035-1460
1300-1685
Ball
2100
2.4/3.4
1...10 x 10
2400
2.40
2.90
1725
1725
56
56
1119-1585
1300-1685
Ball
2100
2.4/3.4
Nominal Cfm
Maximum Continuous Bhp
Std
Hi-Static
Std
Hi-Static
Std
Hi-Static
Std
2.40
Motor RPM
1620
1725
48
Motor Frame Size
Fan Rpm Range
56
680-1044
1075-1455
Ball
770-1185
1075-1455
Ball
2100
1.9/2.0
Hi-Static
Motor Bearing Type
Maximum Fan Rpm
Motor Pulley Pitch Diameter A/B (in.)
2100
Std
Hi-Static
Std
Hi-Static
Std
Hi-Static
Std
Hi-Static
1.9/2.9
2.8/3.8
2.8/3.8
3.4/4.4
3.4/3.4
1/
1
5
5
5
5
7
Nominal Motor Shaft Diameter (in.)
Fan Pulley Pitch Diameter (in.)
Belt — Type...Length (in.)
/
/
/
/
/
/
2
8
2
8
8
8
8
8
5
/
4.5
4.5
1...A...36
1...A...39
4.0
4.0
1...A...36
1...A...39
4.0
4.5
1....4...40
1...A...40
4.0
4.5
1...A...38
1...A...40
Pulley Center Line Distance (in.)
10.0-12.4
10.0-12.4
14.7-15.5
14.7-15.5
Std
Hi-Static
Std
Hi-Static
Std
Hi-Static
Std
Hi-Static
Speed Change per Full Turn of
65
65
5
70
65
5
75
60
6
95
60
5
Movable Pulley Flange (rpm)
Movable Pulley Maximum Full
Turns from Closed Position
Factory Setting — Full Turns Open
6
6
5
5
3
3
3
3
1
1
1
1
3 /
3 /
3 /
3 /
2
2
2
2
Factory Speed Setting (rpm)
826
936
1248
1305
1233
1233
1396
1396
5
5
5
5
Fan Shaft Diameter at Pulley (in.)
/
/
/
/
8
8
8
8
LEGEND
Bhp — Brake Horsepower
9
Table 1 — Physical Data 581B (cont)
UNIT SIZE 581B
036
048
060
072
FURNACE SECTION
Rollout Switch Cutout Temp (F)†
Burner Orifice Diameter (in. ...drill size)**
Natural Gas —Std
195
195
195
195
071/072
114/115
149/150
060N
.113...33
.113...33
—
.102...38
.102...38
—
.089...43
.089...43
—
.082...45
.082...45
—
.113...33
.113...33
.129...30
.102...38
.102...38
.116...32
.089...43
.089...43
.102...38
.082...45
.082...45
.094...42
.113...33
.113...33
.129...30
.102...38
.102...38
.116...32
.089...43
.089...43
.102...38
.082...45
.082...45
.094...42
.113...33
.113...33
.129...30
—
—
—
.089...43
.089...43
.104...39
—
—
—
090N
120N
Propane —Alt††
071/072
114115
149/150
060N
090N
120N
Thermostat Heat Anticipator Setting (amps)
208/230/460 v
First Stage
.14
.14
.14
.14
.14
.14
.14
.14
Second Stage
Gas Input (Btuh)
First Stage/Second Stage (3---phase units)
072
115
150
50,000/ 72,000
82,000/115,000
—
—/72,000
—/115,000
—
50,000/ 72,000
82,000/115,000
120,000/150,000
—/72,000
—/115,000
—/150,000
—/60,000
—/90,000
—/120,000
82
50,000/ 72,000
82,000/115,000
120,000/150,000
—/72,000
—/115,000
—/150,000
—/60,000
—/90,000
—/120,000
82
50,000/ 72,000
82,000/115,000
120,000/150,000
071II
114II
149II
060N***
090N***
120N***
072
—
—
—
—/ 60,000
—/ 90,000
—
—
—
—
Efficiency (Steady State) (%)
82
82
115
80
81
81
81
150
—
80
80
80
071
82
82
82
—
114
80
81
81
—
149
—
80
80
—
060N
090N
120N
072
80
80
80
—
80
80
80
—
—
80
80
—
Temperature Rise Range
15---45
55---85
—
15---45
35---65
50---80
15---45
35---65
50---80
20---50
30---60
40---70
15---45
35---65
50---80
15---45
35---65
50---80
20---50
30---60
40---70
15---45
35---65
50---80
—
115
150
071
15---45
55---85
—
20---50
30---60
—
114
—
149
—
060N
090N
120N
—
—
—
Manifold Pressure (in. wg)
Natural Gas —Std
3.5
3.5
1.0
1/2
3.5
3.5
1.0
1/2
3.5
3.5
1.0
1/2
3.5
3.5
1.0
1/2
Propane —Alt††
Maximum Static Pressure (in. wg)
Field Gas Connection Size (in.)
HIGH-PRESSURE SWITCH (psig)
Standard Compressor Internal Relief
Cutout
450 ± 50
428
320
Reset (Auto.)
LOSS-OF-CHARGE SWITCH/LOW-PRESSURE
(Liquid Line) (psig)
Cutout
7 ± 3
Reset (Auto.)
22 ± 5
FREEZE PROTECTION THERMOSTAT
Opens (F)
Closes (F)
OUTDOOR-AIR INLET SCREENS
RETURN-AIR FILTERS
Quantity...Size (in.)
30 ± 5
45 ± 5
Cleanable. Screen quantity and size varies with option selected.
Throwaway
2...16 x 25 x 2
4...16 x 16 x 2
LEGEND
Bhp — Brake Horsepower
**60,000 and 72,000 Btuh heat input units have 2 burners. 90,000 and 120,000 Btuh
heat input units have 3 burners. 115,000 Btuh heat input units and 150,000 Btuh
Heat input units have 3 burners.
††A propane kit is available as an accessory. Kit may be used at elevations as high as
2000 ft. If a propane kit is used with Low NOx units, the Low NOx baffle must be
removed and the units will no longer be classified as Low NOx units.
ll Three-phase standard models have heating inputs as shown. Single-phase stan-
dard models have one-stage heating with heating input values.
***California compliant three-phase models.
†††California SCAQMD compliant low NO models have combustion products that are
x
controlled to 40 nanograms per joule or less.
10
Table 2—Physical Data 581C
BASE UNIT 581C
024
036
048
072
NOMINAL CAPACITY (tons)
OPERATING WEIGHT (lb)
Unit
Perfect Humidity™ Adaptive Dehumidification System
EconoMi$er IV
Roof Curb
COMPRESSOR
Quantity
Oil (oz)
REFRIGERANT TYPE
Expansion Device
Operating Charge (lb-oz)
Standard Unit
Unit With Perfect Humidity Adaptive Dehumidification System
CONDENSER FAN
Quantity...Diameter (in.)
Nominal Cfm
Motor Hp...Rpm
Watts Input (Total)
CONDENSER COIL
Rows...Fins/in.
2
3
4
5
530
13
50
540
15
50
560
23
50
635
25
50
115
115
115
115
Scroll
1
25
1
42
1
56
1
53
R-22
Acutrol™ Metering Device
5 --- 3
10 --- 2
7 --- 11
14 --- 0
8 --- 8
14---13
Propeller
1...22
12---11
21 --- 0
1...22
3000
/8...825
180
1...22
3500
/8...825
180
1...22
4100
/ ...1100
3500
/8...825
180
1
1
1
1
4
320
3/8---in. OD Enhanced Copper Tubes, Aluminum Lanced Fins
1...17
14.6
1...17
14.6
2...17
16.5
2...17
16.5
Total Face Area (sq ft)
EVAPORATOR COIL
Standard Unit
3/8---in. OD Enhanced Copper Tubes, Aluminum Double-Wavy Fins
Rows...Fins/in.
2...15
4.2
2...15
5.5
2...15
5.5
4...15
5.5
Total Face Area (sq ft)
Unit with Perfect Humidity Adaptive Dehumidification System
Rows...Fins/in.
Total Face Area (sq ft)
EVAPORATOR FAN
Quantity...Size (in.)
1...17
3.5
1...17
3.9
2...17
3.9
2...17
3.9
Centrifugal Type, Belt Drive
1...10 x 10
800
0.58
1...10 x 10
1200
1.20
2.40
48
56
1620
680-1044
1075-1455
Ball
1...10 x 10
1600
1.20
2.40
48
56
1620
770-1185
1075-1455
Ball
1...10 x 10
2000
1.30/2.40*
2.90
48/56*
56
1725
1035-1460
1300-1685
Ball
2100
2.4/3.4
Nominal Cfm
Maximum Continuous Bhp
Std
Hi-Static
Std
Motor Frame Size
48
Hi-Static
Motor Rpm
Fan Rpm Range
1620
400-1000
Std
Hi-Static
Motor Bearing Type
Maximum Fan Rpm
Motor Pulley Pitch Diameter A/B (in.)
Ball
1620
2.4/3.2
2100
2100
1.9/2.0
Std
Hi-Static
Std
Hi-Static
Std
Hi-Static
Std
Hi-Static
1.9/2.9
2.8/3.8
2.8/3.8
3.4/4.4
5
7
1/
1
5
5
5
Nominal Motor Shaft Diameter (in.)
Fan Pulley Pitch Diameter (in.)
Belt — Type...Length (in.)
/
/
/
/
/
/
8
8
2
8
2
8
8
8
5
/
4.0
4.5
1...A...36
4.5
4.5
1...A...36
1...A...39
4.0
4.0
1...A...36
1...A...39
4.0
4.5
1....4...40
1...A...40
Pulley Center Line Distance (in.)
10.0---12.4
60
10.0-12.4
10.0-12.4
14.7-15.5
Std
Hi-Static
Std
Hi-Static
Std
Hi-Static
Std
Hi-Static
Speed Change per Full Turn of
65
65
5
70
65
5
75
60
6
Movable Pulley Flange (rpm)
Movable Pulley Maximum Full
Turns from Closed Position
Factory Setting — Full Turns Open
5
3
6
6
5
3
3
3
1
1
1
3 /
3 /
3 /
2
2
2
Factory Speed Setting (rpm)
756
5
826
936
1248
1233
1233
1396
5
5
5
Fan Shaft Diameter at Pulley (in.)
/
/
/
/
8
8
8
8
11
Table 2 — Physical Data 581C (cont)
UNIT SIZE 581C
024
036
048
060
FURNACE SECTION
Rollout Switch Cutout Temp (F)†
Burner Orifice Diameter (in. ...drill size)**
Natural Gas —Std
195
195
195
195
071/072
114/115
149/150
060N
.113...33
.113...33
—
.102...38
.102...38
—
.089...43
.089...43
—
.082...45
.082...45
—
.113...33
.113...33
.129...30
.102...38
.102...38
.116...32
.089...43
.089...43
.102...38
.082...45
.082...45
.094...42
.113...33
.113...33
.129...30
.102...38
.102...38
.116...32
.089...43
.089...43
.102...38
.082...45
.082...45
.094...42
.113...33
.113...33
.129...30
—
—
—
.089...43
.089...43
.104...39
—
—
—
090N
120N
Propane —Alt††
071/072
114115
149/150
060N
090N
120N
Thermostat Heat Anticipator Setting (amps)
208/230/460 v
First Stage
.14
.14
.14
.14
.14
.14
.14
.14
Second Stage
Gas Input (Btuh)
First Stage/Second Stage (3---phase units)
072
115
150
50,000/ 72,000
82,000/115,000
—
—/72,000
—/115,000
—
50,000/ 72,000
82,000/115,000
120,000/150,000
—/72,000
—/115,000
—/150,000
—/60,000
—/90,000
—/120,000
82
50,000/ 72,000
82,000/115,000
120,000/150,000
—/72,000
—/115,000
—/150,000
—/60,000
—/90,000
—/120,000
82
50,000/ 72,000
82,000/115,000
120,000/150,000
071II
114II
149II
060N***
090N***
120N***
072
—
—
—
—/ 60,000
—/ 90,000
—
—
—
—
Efficiency (Steady State) (%)
82
82
115
80
81
81
81
150
—
80
80
80
071
82
82
82
—
114
80
81
81
—
149
—
80
80
—
060N
090N
120N
072
80
80
80
—
80
80
80
—
—
80
80
—
Temperature Rise Range
15---45
55---85
—
15---45
35---65
50---80
15---45
35---65
50---80
20---50
30---60
40---70
15---45
35---65
50---80
15---45
35---65
50---80
20---50
30---60
40---70
15---45
35---65
50---80
—
115
150
071
15---45
55---85
—
20---50
30---60
—
114
—
149
—
060N
090N
120N
—
—
—
Manifold Pressure (in. wg)
Natural Gas —Std
3.5
3.5
1.0
1/2
3.5
3.5
1.0
1/2
3.5
3.5
1.0
1/2
3.5
3.5
1.0
1/2
Propane —Alt††
Maximum Static Pressure (in. wg)
Field Gas Connection Size (in.)
HIGH-PRESSURE SWITCH (psig)
Standard Compressor Internal Relief
Cutout
450 ± 50
428
320
Reset (Auto.)
LOSS-OF-CHARGE SWITCH/LOW-PRESSURE
(Liquid Line) (psig)
Cutout
7 ± 3
Reset (Auto.)
22 ± 5
FREEZE PROTECTION THERMOSTAT
Opens (F)
Closes (F)
OUTDOOR-AIR INLET SCREENS
RETURN-AIR FILTERS
Quantity...Size (in.)
30 ± 5
45 ± 5
Cleanable. Screen quantity and size varies with option selected.
Throwaway
2...16 x 25 x 2
4...16 x 16 x 2
LEGEND
Bhp — Brake Horsepower
removed and the units will no longer be classified as Low NOx units.
ll Three-phase standard models have heating inputs as shown. Single-phase stan-
dard models have one-stage heating with heating input values.
***California compliant three-phase models.
**60,000 and 72,000 Btuh heat input units have 2 burners. 90,000 and 120,000 Btuh
heat input units have 3 burners. 115,000 Btuh heat input units and 150,000 Btuh
Heat input units have 3 burners.
†††California SCAQMD compliant low NO models have combustion products that are
x
controlled to 40 nanograms per joule or less.
††A propane kit is available as an accessory. Kit may be used at elevations as high as
2000 ft. If a propane kit is used with Low NOx units, the Low NOx baffle must be
12
TO COMP
BLK
YEL
BLK
YEL
TO COMP
BLK
BLU
11
21
23
23
11
21
23
23
11
21
23
23
YEL
BLU
C
C
C
EQUIP
GND
FIELD POWER SUPPLY
DISCONNECT
PER NEC
575-3-60
FIELD POWER SUPPLY
(SIZES 581B036,048
581C036,048)
FIELD POWER SUPPLY
208/230-3-60
480-3-60
DISCONNECT
PER NEC
DISCONNECT
PER NEC
208/230-1-60
(SIZES 581B036-060,
581C024-060)
(SIZES 581B036,048
581C036,048)
TO COMP
BLK
TO TB2
BLK
YEL
11
21
23
23
11
21
13
23
YEL
BLU
C
C
BLU
1
4
6
IFC
3
FIELD POWER SUPPLY
DISCONNECT
PER NEC
575-3-60
(SIZES 581B060, 072)
FIELD POWER SUPPLY
208/230-3-60
460-3-60
DISCONNECT
PER NEC
(SIZES 581B060, 072,
581C0060)
C06346
Fig. 12 --- Power Wiring Connections
LOW VOLTAGE
CONNECTIONS
INTEGRATED GAS UNIT
CONTROLLER (IGC)
R
COOL STAGE 1
FAN
Y1/W2
G
G
Y1
Y2
W1
W2
C
HEAT STAGE 1
COOL STAGE 2
HEAT STAGE 2
24 VAC HOT
W/W1
Y/Y2
O/W2
R
WIRE
CONNECTIONS
TO
LOW-VOLTAGE
SECTION
24 VAC COM
N/A
C
IPD/X
OUTDOOR AIR
SENSOR
S1
S2
THERMOSTAT DIPSWITCH SETTINGS
ON
OFF
D
A
B
C
LEGEND
Field Wiring
NOTE: Underlined letter indicates active thermostat output when
configured for A/C operation.
C06008
Fig. 13 --- Low--Voltage Connections With or
C06125
Without Economizer or Two--Position Damper
Fig. 14 --- Field Control Wiring
13
14
15
To install Thermidistat device:
Step 8 —Adjust Factory--Installed Options
1. Route Thermidistat cable through hole provided in unit
control box.
Perfect Humidity™ Adaptive Dehumidification
System
2. Some models may be equipped with a raceway built into
the corner post located on the left side of control box (See
Fig. 14). This raceway provides the required clearance
between high--voltage and low voltage wiring. For models
without a raceway, ensure to provide the NEC required
clearance between the high--voltage and low--voltage
wiring.
Perfect Humidity system operation can be controlled by field
installation of a Bryant--approved humidistat. (See Fig. 15.)
NOTE: A light commercial Thermidistat™ device (Fig. 16) can
be used instead of the humidistat if desired. The Thermidistat
device includes a thermostat and a humidistat. The humidistat is
normally used in applications where a temperature sensor is
already provided.
3. A field-supplied relay must be installed between the
Thermidistat and the Humidi-Mizer circuit (recommended
relay: HN61KK324). (See Fig. 18.) The relay coil is
connected between the DEHUM output and C (common)
of the unit. The relay controls thePerfect Humidity
solenoid valve and must be wired between the Perfect
Humidity fuse and the low-pressure switch. Refer to the
installation instructions included with the Bryant Light
Commercial Thermidistat device for more information.
Manual Outdoor Damper
The outdoor--air hood and screen are attached to the basepan at
the bottom of the unit for shipping.
% RELATIVE HUMIDITY
Assembly:
1. Determine quantity of ventilation required for building.
Record amount for use in Step 8.
C06358
Fig. 15 --- Accessory Field--Installed Humidistat
2. Remove and save outdoor air opening panel and screws.
(See Fig. 19.)
3. Remove evaporator coil access panel. Separate hood and
screen from basepan by removing the 4 screws securing
them. Save all screws.
4. Replace evaporator coil access panel.
5. Place hood on front of outdoor air opening panel. See
Fig. 20 for hood details. Secure top of hood with the
4 screws removed in Step 3. (See Fig. 21.)
6. Remove and save 6 screws (3 on each side) from sides of
the manual outdoor-air damper.
7. Align screw holes on hood with screw holes on side of
manual outdoor-air damper. (See Fig. 28 and 21.) Secure
hood with 6 screws from Step 6.
C06359
8. Adjust minimum position setting of the damper blade by
adjusting the manual outdoor-air adjustment screws on the
front of the damper blade. (See Fig. 19.) Slide blade
vertically until it is in the appropriate position determined
by Fig. 22. Tighten screws.
Fig. 16 --- Light Commercial Thermidistat Device
To install the humidistat:
1. Route humidistat cable through hole provided in unit
control box.
9. Remove and save screws currently on sides of hood.
Insert screen. Secure screen to hood using the screws. (See
Fig. 21.)
2. Some models may be equipped with a raceway built into
the corner post located on the left side of control box (See
Fig. 14). This raceway provides the required clearance
between high--voltage and low voltage wiring. For models
without a raceway, ensure to provide the NEC required
clearance between the high--voltage and low--voltage
wiring.
Convenience Outlet
An optional convenience outlet provides power for rooftop use.
For maintenance personnel safety, the convenience outlet power
is off when the unit disconnect is off. Adjacent unit outlets may
be used for service tools.
3. Use a wire nut to connect humidistat cable into low-
voltage wiring as shown in Fig. 17.
16
LEGEND
CB
—
—
—
—
—
—
—
—
Circuit Breaker
Terminal (Unmarked)
Splice
CR
Cooling Relay
DHR
DSV
HR
LPS
LSV
LTLO
Dehumidify Relay
Discharge Solenoid Valve
Heater Relay
Low Pressure Switch
Liquid Solenoid Valve
Low Temperature Lockout
Factory Wiring
Field Control Wiring
Field Power Wiring
Field Splice
C06128
Fig. 17 --- Typical Perfect Humidityt Adaptive Dehumidification System
Humidistat Wiring (208/230--V Unit Shown)
LCT
ROOF TOP UNIT
R
C
R
C
Y1
Y2
G
Y1
Y2
G
W1
W2
W1
W2
DEHUM
OC
CB
R1
R1
3.2 AMPS
PINK
PINK
RED
24V
TSTATWIRES
LEGEND
LTLO
PINK
FROM
PERFECT HUMIDITY SYSTEM
LLSV
CB
— Circuit Breaker
LCT — Light Commercial Thermidistat™ Device
LLSV — Liquid Line Solenoid Valve
LTLO — Low Temperature Lockout
PERFECT HUMIDITY SYSTEM
C06360
Fig. 18 --- Typical Rooftop Unit with Perfect Humidity
Adaptive Dehumidification System with Thermidistat Device
OUTDOOR
AIR OPENING
PANEL
3 SCREWS
(SIDE)
C06130
Fig. 19 --- Damper Panel with Manual Outdoor--Air
Damper Installed
C06013
Fig. 20 --- Outdoor--Air Hood Details
17
Optional Economi$er IV
See Fig. 23 for EconoMi$er IV component locations.
NOTE: These instructions are for installing the optional
EconoMi$er IV. Refer to the accessory EconoMi$er IV when
field installing an EconoMi$er IV accessory.
1. To remove the existing unit filter access panel, raise the
panel and swing the bottom outward. The panel is now
disengaged from the track and can be removed. (See
Fig. 24.)
2. The box with the economizer hood components is shipped
in the compartment behind the economizer. The
EconoMi$er IV controller is mounted on top of the
EconoMi$er IV. To remove the component box from its
shipping position, remove the screw holding the hood box
bracket to the top of the economizer. Slide the hood box
out of the unit. (See Fig. 25.)
C06131
Fig. 21 --- Outdoor--Air Damper With
Hood Attached
IMPORTANT: If the power exhaust accessory is to be installed
on the unit, the hood shipped with the unit will not be used and
must be discarded. Save the aluminum filter for use in the power
exhaust hood assembly.
3. The indoor coil access panel will be used as the top of the
hood. Remove the screws along the sides and bottom of
the indoor coil access panel. (See Fig. 26.)
4. Swing out indoor coil access panel and insert the hood
sides under the panel (hood top). Use the screws provided
to attach the hood sides to the hood top. Use screws
provided to attach the hood sides to the unit. (See Fig. 27.)
5. Remove the shipping tape holding the economizer
barometric relief damper in place.
6. Insert the hood divider between the hood sides. (See
Fig. 28 and 29.) Secure hood divider with 2 screws on
each hood side. The hood divider is also used as the
bottom filter rack for the aluminum filter.
7. Open the filter clips which are located underneath the
hood top. Insert the aluminum filter into the bottom filter
rack (hood divider). Push the filter into position past the
open filter clips. Close the filter clips to lock the filter into
place. (See Fig. 28.)
C06132
Fig. 22 --- Outdoor--Air Damper Position Setting
8. Caulk the ends of the joint between the unit top panel and
the hood top. (See Fig. 26.)
ECONOMI$ER IV
CONTROLLER
9. Replace the filter access panel.
10. Install all EconoMi$er IV accessories. EconoMi$er IV
wiring is shown in Fig. 29.
OUTSIDE AIR
WIRING
TEMPERATURE SENSOR
HARNESS
LOW AMBIENT
SENSOR
Barometric flow capacity is shown in Fig. 30. Outdoor air
leakage is shown in Fig. 33. Return air pressure drop is shown in
Fig. 32.
ACTUATOR
FILTER ACCESS PANEL
C06021
Fig. 23 --- EconoMi$er IV Component Locations
COMPRESSOR
ACCESS PANEL
OUTDOOR-AIR OPENING AND
INDOOR COIL ACCESS PANEL
C06023
Fig. 24 --- Typical Access Panel Locations
18
Supply Air Temperature (SAT) Sensor
The supply air temperature sensor is a 3k ohm thermistor located
at the inlet of the indoor fan. (See Fig. 34.) This sensor is factory
installed. The operating range of temperature measurement is 0°
to 158_F. See Table 5 for sensor temperature/resistance values.
HOOD BOX
BRACKET
Table 5—Supply Air Sensor Temperature/
Resistance Values
TEMPERATURE (F)
RESISTANCE (ohms)
–58
–40
–22
–4
200,250
100,680
53,010
29,091
16,590
9,795
5,970
3,747
3,000
2,416
1,597
1,080
746
525
376
321
274
203
153
116
102
14
32
C06024
50
Fig. 25 --- Hood Box Removal
68
77
86
104
122
140
158
176
185
194
212
230
248
257
266
284
302
SIDE
PANEL
89
70
55
TOP
SIDE
PANEL
CAULK
HERE
INDOOR
COIL
ACCESS
PANEL
INDOOR
COIL
ACCESS
PANEL
17 1/4”
C06025
Fig. 26 --- Indoor Coil Access Panel Relocation
DIVIDER
TOP
PANEL
OUTSIDE
AIR
INDOOR COIL
ACCESS PANEL
HOOD
CLEANABLE
ALUMINUM
FILTER
FILTER
LEFT
HOOD
SIDE
SCREW
B
19 1/16”
BAROMETRIC
RELIEF
FILTER
CLIP
33 3/8”
C06027
Fig. 28 --- Filter Installation
HOOD DIVIDER
The temperature sensor looks like an eyelet terminal with wires
running to it. The sensor is located in the “crimp end” and is
sealed from moisture.
C06026
Fig. 27 --- Outdoor--Air Hood Construction
Outdoor Air Lockout Sensor
Economi$er IV Standard Sensors
Outdoor Air Temperature (OAT) Sensor
The Economi$er IV is equipped with an ambient temperature
lockout switch located in the outdoor air stream which is used to
lockout the compressors below a 42_F ambient temperature. (See
Fig. 23.)
The outdoor air temperature sensor (HH57AC074) is a 10 to 20
mA device used to measure the outdoor-air temperature. The
outdoor-air temperature is used to determine when the
EconoMi$er IV can be used for free cooling. The sensor is
factory-installed on the EconoMi$er IV in the outdoor airstream.
(See Fig. 23 and 33.) The operating range of temperature
measurement is 40_ to 100_F.
19
Economi$er IV Control Modes
Differential Dry Bulb Control
Determine the EconoMi$er IV control mode before set up of the
control. Some modes of operation may require different
sensors. (See Table 6.) The EconoMi$er IV is supplied from the
factory with a supply--air temperature sensor and an outdoor-- air
temperature sensor. This allows for operation of the EconoMi$er
IV with outdoor air dry bulb changeover control. Additional
accessories can be added to allow for different types of
changeover control and operation of the EconoMi$er IV and unit.
For differential dry bulb control the standard outdoor dry bulb
sensor is used in conjunction with an additional accessory dry
bulb sensor (part number CRTEMPSN002A00). The accessory
sensor must be mounted in the return airstream. (See Fig. 37.)
Wiring is provided in the EconoMi$er IV wiring harness. (See
Fig. 29.)
In this mode of operation, the outdoor-air temperature is
compared to the return-air temperature and the lower temperature
airstream is used for cooling. When using this mode of
changeover control, turn the enthalpy setpoint potentiometer fully
clockwise to the D setting. (See Fig. 35.)
Outdoor Dry Bulb Changeover
The standard controller is shipped from the factory configured for
outdoor dry bulb changeover control. The outdoor--air and
supply--air temperature sensors are included as standard. For this
control mode, the outdoor temperature is compared to an
adjustable set point selected on the control. If the outdoor-air
temperature is above the set point, the EconoMi$er IV will adjust
the outdoor-air dampers to minimum position. If the outdoor air
temperature is below the set point, the position of the outdoor air
dampers will be controlled to provide free cooling using outdoor
air. When in this mode, the LED next to the free cooling set point
potentiometer will be on. The changeover temperature set point is
controlled by the free cooling set point potentiometer located on
the control. (See Fig. 35.) The scale on the potentiometer is A, B,
C, and D. See Fig. 36 for the corresponding temperature
changeover values.
Outdoor Enthalpy Changeover
For enthalpy control, accessory enthalpy sensor (part number
HH57AC078) is required. Replace the standard outdoor dry bulb
temperature sensor with the accessory enthalpy sensor in the same
mounting location. (See Fig. 23 and 33.) When the outdoor air
enthalpy rises above the outdoor enthalpy changeover set point,
the outdoor-air damper moves to its minimum position. The
outdoor enthalpy changeover set point is set with the outdoor
enthalpy set point potentiometer on the EconoMi$er IV
controller. The set points are A, B, C, and D. (See Fig. 38.) The
factory-installed 620-ohm jumper must be in place across
terminals SR and SR+ on the EconoMi$er IV controller. (See Fig.
23 and 39.)
Differential Enthalphy Control
Table 6—Economi$er IV Sensor Usage
For differential enthalpy control, the EconoMi$er IV controller
uses
two
enthalpy
sensors
(HH57AC078
and
ECONOMI$ER IV WITH OUTDOOR AIR
CRENTDIF004A00), one in the outside air and one in the return
air duct. The EconoMi$er IV controller compares the outdoor air
enthalpy to the return air enthalpy to determine EconoMi$er IV
use. The controller selects the lower enthalpy air (return or
outdoor) for cooling. For example, when the outdoor air has a
lower enthalpy than the return air, the EconoMi$er IV opens to
bring in outdoor air for free cooling.
DRY BULB SENSOR
Accessories Required
APPLICATION
None. The outdoor air dry bulb sensor
Outdoor Air
Dry Bulb
Differential
Dry Bulb
is factory installed.
CRTEMPSN002A00*
Single Enthalpy
HH57AC078
HH57AC078
Differential
Enthalpy
Replace the standard outside air dry bulb temperature sensor with
the accessory enthalpy sensor in the same mounting location.
(See Fig. 23.) Mount the return air enthalpy sensor in the return
air duct. (See Fig. 37.) Wiring is provided in the EconoMi$er IV
wiring harness. (See Fig. 29.) The outdoor enthalpy changeover
set point is set with the outdoor enthalpy set point potentiometer
on the EconoMi$er IV controller. When using this mode of
changeover control, turn the enthalpy setpoint potentiometer fully
clockwise to the D setting.
and
CRENTDIF004A00*
CO for DCV
2
Control using a
Wall-Mounted
33ZCSENCO2
CO Sensor
2
CO for DCV
2
33ZCSENCO2†
O
Control using a
Duct-Mounted
and
CRCBDIOX005A00††
R
33ZCASPCO2**
CO Sensor
2
*CRENTDIF004A00 and CRTEMPSN002A00 accessories are used on many
different base units. As such, these kits may contain parts that will not be
needed for installation.
† 33ZCSENCO2 is an accessory CO sensor.
2
** 33ZCASPCO2 is an accessory aspirator box required for duct-mounted
applications.
†† CRCBDIOX005A00 is an accessory that contains both 33ZCSENCO2
and 33ZCASPCO2 accessories.
20
FOR OCCUPANCY CONTROL
REPLACE JUMPER WITH
FIELD-SUPPLIED TIME CLOCK
8
7
Potentiometer Defaults Settings:
LEGEND
NOTES:
Power Exhaust Middle
1. 620 ohm, 1 watt 5% resistor should be removed only when using differential
DCV— Demand Controlled Ventilation
IAQ — Indoor Air Quality
Minimum Pos.
DCV Max.
DCV Set
Fully Closed
enthalpy or dry bulb.
Middle
2. If a separate field-supplied 24 v transformer is used for the IAQ sensor power
supply, it cannot have the secondary of the transformer grounded.
3. For field-installed remote minimum position POT, remove black wire jumper
between P and P1 and set control minimum position POT to the minimum
position.
LA — Low Ambient Lockout Device
OAT — Outdoor-Air Temperature
POT— Potentiometer
Middle
C Setting
Enthalpy
RAT — Return-Air Temperature
C06028
Fig. 29 --- EconoMi$er IV Wiring
6000
5000
4000
3000
2000
1000
0
2500
2000
1500
1000
500
0
0.15
0.05
0.25
0.05
0.10
0.15
0.20
0.25
0.30
0.35
STATIC PRESSURE (in. wg)
STATIC PRESSURE (in. wg)
C06030
C06032
Fig. 30 --- Barometric Flow Capacity
Fig. 32 --- Return--Air Pressure Drop
30
25
20
15
10
5
HH57AC078 ENTHALPY
SENSOR
C7400A1004
+
MOUNTING PLATE
0
0.13 0.20 0.22 0.25 0.30 0.35 0.40 0.45 0.50
STATIC PRESSURE (in. wg)
C06031
Fig. 31 --- Outdoor--Air Damper Leakage
C06361
Fig. 33 --- Enthalpy Sensor and Mounting Plate
21
Minimum Position Control
There is a minimum damper position potentiometer on the
EconoMi$er IV controller. (See Fig. 35.) The minimum damper
position maintains the minimum airflow into the building during
the occupied period.
SUPPLY AIR
TEMPERATURE
SENSOR
MOUNTING
LOCATION
When using demand ventilation, the minimum damper position
represents the minimum ventilation position for VOC (volatile
organic compound) ventilation requirements. The maximum
demand ventilation position is used for fully occupied ventilation.
When demand ventilation control is not being used, the minimum
position potentiometer should be used to set the occupied
ventilation position. The maximum demand ventilation position
should be turned fully clockwise.
SUPPLY AIR
TEMPERATURE
SENSOR
Adjust the minimum position potentiometer to allow the
minimum amount of outdoor air, as required by local codes, to
enter the building. Make minimum position adjustments with at
least 10_F temperature difference between the outdoor and
return-air temperatures.
C06033
Fig. 34 --- Supply Air Sensor Location
To determine the minimum position setting, perform the
following procedure:
1. Calculate the appropriate mixed air temperature using the
following formula:
OA
100
RA
100
+ (TR x
(TO x
)
) =TM
T
O
= Outdoor-Air Temperature
OA = Percent of Outdoor Air
T = Return-Air Temperature
R
RA = Percent of Return Air
T
M
= Mixed-Air Temperature
As an example, if local codes require 10% outdoor air during
occupied conditions, outdoor-air temperature is 60_F, and
return-air temperature is 75_F.
C06034
Fig. 35 --- EconoMi$er IV Controller Potentiometer
and LED Locations
(60 x .10) + (75 x .90) = 73.5_F
2. Disconnect the supply air sensor from terminals T and T1.
Indoor Air Quality (IAQ) Sensor Input
3. Ensure that the factory-installed jumper is in place across
terminals P and P1. If remote damper positioning is being
used, make sure that the terminals are wired according to
Fig. 29 and that the minimum position potentiometer is
turned fully clockwise.
The IAQ input can be used for demand control ventilation control
based on the level of CO measured in the space or return air
2
duct.
Mount the accessory IAQ sensor according to manufacturer
specifications. The IAQ sensor is wired to the AQ and AQ1
terminals of the controller. Adjust the DCV potentiometers to
correspond to the DCV voltage output of the indoor air quality
sensor at the user-determined set point. (See Fig. 40.)
If a separate field-supplied transformer is used to power the IAQ
sensor, the sensor must not be grounded or the EconoMi$er IV
control board will be damaged.
4. Connect 24 vac across terminals TR and TR1.
5. Carefully adjust the minimum position potentiometer
until the measured supply air temperature matches the
calculated value.
6. Reconnect the mixed air sensor to terminals T and T1.
Remote control of the EconoMi$er IV damper is desirable when
requiring
additional
temporary
ventilation.
If
a
Exhaust Set Point Adjustment
field-supplied remote potentiometer (Honeywell part number
S963B1128) is wired to the EconoMi$er IV controller, the
minimum position of the damper can be controlled from a remote
location.
The exhaust set point will determine when the exhaust fan runs
based on damper position (if accessory power exhaust is
installed). The set point is modified with the Exhaust Fan Set
Point (EXH SET) potentiometer. (See Fig. 35.) The set point
represents the damper position above which the exhaust fans will
be turned on. When there is a call for exhaust, the EconoMi$er IV
controller provides a 45 ± 15 second delay before exhaust fan
activation to allow the dampers to open. This delay allows the
damper to reach the appropriate position to avoid unnecessary fan
overload.
22
To control the minimum damper position remotely, remove the
factory-installed jumper on the P and P1 terminals on the
EconoMi$er IV controller. Wire the field-supplied potentiometer
to the P and P1 terminals on the EconoMi$er IV controller. (See
Fig. 39.)
Occupancy Control
The factory default configuration for the EconoMi$er IV control
is occupied mode. Occupied mode is provided by the black
jumper from terminal TR to terminal N. When unoccupied mode
is desired, install a field-supplied timeclock function in place of
the jumper between TR and N. (See Fig. 29.) When the timeclock
contacts are closed, the EconoMi$er IV control will be in
occupied mode. When the timeclock contacts are open (removing
the 24-v signal from terminal N), the EconoMi$er IV will be in
unoccupied mode.
Damper Movement
Damper movement from full open to full closed (or vice versa)
1
takes 2 / minutes.
2
Thermostats
The EconoMi$er IV control works with conventional thermostats
that have a Y1 (cool stage 1), Y2 (cool stage 2), W1 (heat stage
1), W2 (heat stage 2), and G (fan). The EconoMi$er IV control
does not support space temperature sensors. Connections are
made at the thermostat terminal connection board located in the
main control box.
Typically the maximum ventilation rate will be about 5 to 10%
more than the typical cfm required per person, using normal
outside air design criteria.
Demand Controlled Ventilation (DCV)
When using the EconoMi$er IV for demand controlled
ventilation, there are some equipment selection criteria which
should be considered. When selecting the heat capacity and cool
capacity of the equipment, the maximum ventilation rate must be
evaluated for design conditions. The maximum damper position
must be calculated to provide the desired fresh air.
A proportional anticipatory strategy should be taken with the
following conditions: a zone with a large area, varied occupancy,
and equipment that cannot exceed the required ventilation rate at
design conditions. Exceeding the required ventilation rate means
the equipment can condition air at a maximum ventilation rate
that is greater than the required ventilation rate for maximum
occupancy. A proportional-anticipatory strategy will cause the
19
LED ON
18
D
17
LED ON
LED OFF
16
15
14
C
LED ON
LED OFF
B
13
12
LED ON
LED OFF
A
11
10
9
LED OFF
85 90
95
fresh air supplied to increase as the room CO level increases
100
2
50
55 60
70 75
40 45
65
80
DEGREES FAHRENHEIT
even though the CO set point has not been reached. By the time
2
the CO level reaches the set point, the damper will be at
2
C06035
maximum ventilation and should maintain the set point.
Fig. 36 --- Outside Air Temperature
In order to have the CO sensor control the economizer damper in
Changeover Set Points
2
this manner, first determine the damper voltage output for
minimum or base ventilation. Base ventilation is the ventilation
required to remove contaminants during unoccupied periods. The
following equation may be used to determine the percent of
outside-air entering the building for a given damper position. For
best results there should be at least a 10 degree difference in
outside and return-air temperatures.
ECONOMI$ER IV
CONTROLLER
ECONOMI$ER IV
OA
100
RA
100
+ (TR x
(TO x
)
) =TM
GROMMET
T
O
= Outdoor-Air Temperature
OA = Percent of Outdoor Air
T = Return-Air Temperature
RA = Percent of Return Air
R
RETURN AIR TEMPERATURE
SENSOR
T
= Mixed-Air Temperature
M
RETURN DUCT
(FIELD-PROVIDED)
Once base ventilation has been determined, set the minimum
damper position potentiometer to the correct position.
C06036
Fig. 37 --- Return Air Temperature or Enthalpy
Sensor Mounting Location
23
85
90
95 100 105 110
(29) (32) (35) (38) (41) (43)
46
4
CONTROL CONTROL POINT
4
CURVE
APPROX. deg. F (deg. C)
AT 50% RH
80
(27)
42
A
B
C
D
73 (23)
70 (21)
67 (19)
63 (17)
40
8
3
6
75
3
(24)
4
3
32
70
(21)
30
RELATIVE HUMIDITY (%)
28
ENTHALPY BTU PER POUND DRY AIR
0
0
0
1
26
9
65
80
(18)
4
70
2
0
6
2
2
60
50
(16)
0
2
0
4
A
8
55
1
(13)
B
30
6
1
50
(10)
C
4
1
20
2
45
(7)
D
1
40
(4)
0
1
35
(2)
A
B
C
D
HIGH LIMIT
CURVE
35
(2)
40
45
50
55
60
65
70
75
80
85
90
95 100 105 110
(4) (7) (10) (13) (16) (18) (21) (24) (27) (29) (32) (35) (38) (41) (43)
APPROXIMATE DRY BULB TEMPERATURE--degrees F (degrees C)
C06037
Fig. 38 --- Enthalpy Changeover Set Points
The same equation can be used to determine the occupied or
maximum ventilation rate to the building. For example, an output
of 3.6 volts to the actuator provides a base ventilation rate of 5%
and an output of 6.7 volts provides the maximum ventilation rate
of 20% (or base plus 15 cfm per person). Use Fig. 37 to
TR1
EXH
Set
10V
TR
N1
N
2V
EXH
24
Vac
HOT
24 Vac
COM
P1
T1
P
T
Min
Pos
determine the maximum setting of the CO sensor. For example,
2
_
+
a 1100 ppm set point relates to a 15 cfm per person design. Use
Open
the 1100 ppm curve on Fig. 40 to find the point when the CO
2
DCV
Max
10V
sensor output will be 6.7 volts. Line up the point on the graph
with the left side of the chart to determine that the range
1
2
5
2V
configuration for the CO sensor should be 1800 ppm. The
2
AQ1
AQ
SO+
SO
SR+
SR
DCV
EconoMi$er IV controller will output the 6.7 volts from the CO
2
DCV
Set
10V
sensor to the actuator when the CO concentration in the space is
4
3
2
2V
at 1100 ppm. The DCV set point may be left at 2 volts since the
Free
Cool
CO sensor voltage will be ignored by the EconoMi$er IV
EF1
EF
2
controller until it rises above the 3.6 volt setting of the minimum
position potentiometer.
C
D
B
A
Once the fully occupied damper position has been determined, set
the maximum damper demand control ventilation potentiometer
to this position. Do not set to the maximum position as this can
result in over-ventilation to the space and potential high-humidity
levels.
C06038
Fig. 39 --- EconoMi$er IV Control
24
CO SENSOR MAX RANGE SETTING
2
6000
5000
4000
3000
2000
1000
0
800 ppm
900 ppm
1000 ppm
1100 ppm
2
3
4
5
6
7
8
DAMPER VOLTAGE FOR MAX VENTILATION RATE
C06039
Fig. 40 --- CO Sensor Maximum Range Setting
2
CO Sensor Configuration
2
Step 9 —Adjust Evaporator--Fan Speed
The CO sensor has preset standard voltage settings that can be
2
Adjust evaporator-fan speed to meet jobsite conditions.
selected anytime after the sensor is powered up. (See Table 7.)
Tables 8 and 9 show fan rpm at motor pulley settings. Tables 10
and 14 show maximum amp draw of belt-drive motor. Table 13
shows sound data. Refer to Tables 15--34 for performance data.
See Table 11 for accessory static pressure drop. See Fig. 41 for
the Perfect Humidity™ system static pressure drops.
Use setting 1 or 2 for Bryant equipment. (See Table 7.)
1. Press Clear and Mode buttons. Hold at least 5 seconds
until the sensor enters the Edit mode.
2. Press Mode twice. The STDSET Menu will appear.
Belt Drive Motors
3. Use the Up/Down button to select the preset number. (See
Table 7.)
4. Press Enter to lock in the selection.
Fan motor pulleys are factory set for speed shown in Table 1 or 2.
Check pulley alignment and belt tension prior to start-up.
To change fan speed:
5. Press Mode to exit and resume normal operation.
1. Shut off the unit power supply and tag disconnect.
The custom settings of the CO sensor can be changed anytime
2
after the sensor is energized. Follow the steps below to change the
non-standard settings:
2. Loosen the belt by loosening the fan motor mounting nuts.
(See Fig. 42.)
1. Press Clear and Mode buttons. Hold at least 5 seconds
until the sensor enters the Edit mode.
3. Loosen movable pulley flange setscrew. (See Fig. 43.)
4. Screw movable flange toward fixed flange to increase
speed and away from fixed flange to decrease speed.
Increasing fan speed increases load on motor. Do not
exceed maximum speed specified in Table 1 or 2.
2. Press Mode twice. The STDSET Menu will appear.
3. Use the Up/Down button to toggle to the NONSTD menu
and press Enter.
5. Set movable flange at nearest keyway of pulley hub and
tighten setscrew. (See Table 1 or 2 for speed change for
each full turn of pulley flange.)
4. Use the Up/Down button to toggle through each of the
nine variables, starting with Altitude, until the desired
setting is reached.
6. Adjust belt tension and align fan and motor pulleys per
guidance below.
NOTE: Once the required flange position is determined for the
correct blower rpm, it is recommended (bu not required) that the
variable pitch pulley be replaced with a corresponding size fixed
sheave pulley.
5. Press Mode to move through the variables.
6. Press Enter to lock in the selection, then press Mode to
continue to the next variable.
Dehumidification of Fresh Air with DCV Control
Information from ASHRAE indicates that the largest humidity
load on any zone is the fresh air introduced. For some
applications, a device such as an energy recovery unit can be
added to reduce the moisture content of the fresh air being
brought into the building when the enthalpy is high. In most
cases, the normal heating and cooling processes are more than
adequate to remove the humidity loads for most commercial
applications.
To align fan and motor pulleys, loosen fan pulley setscrews and
slide fan pulley along fan shaft. Make angular alignment by
loosening motor from mounting.
Additional motor and fan alignment, as well as angular alignment
can be made by loosening the four motor mounting bolts from
the mounting plate.
To adjust belt tension:
If normal rooftop heating and cooling operation is not adequate
for the outdoor humidity level, an energy recovery unit and/or a
dehumidification option should be considered.
1. Loosen the two motor mounting nuts as shown in Fig. 42.
Some models may have a third mounting nut located on
the opposite side of the fan motor mounting plate.
2. Slide motor mounting plate away from fan scroll for
1
proper belt tension ( / -in. deflection with 8 to 10 lb of
2
force) and tighten mounting nuts.
3. Adjust lock bolt and nut on mounting plate to secure
motor in fixed position.
25
Table 7—CO Sensor Standard Settings
2
VENTILATION
ANALOG
CO
OPTIONAL
RELAY
2
RATE
CONTROL RANGE RELAY SETPOINT HYSTERESIS
SETTING
EQUIPMENT
OUTPUT
OUTPUT
(cfm/Person)
(ppm)
(ppm)
(ppm)
0-10V
Proportional
Proportional
Exponential
Proportional
Proportional
Exponential
Exponential
Proportional
Proportional
Any
Any
Any
15
0-2000
1000
50
1
2
3
4
5
6
7
8
9
4-20 mA
2-10V
Interface w/Standard
0-2000
0-2000
0-1100
0- 900
0-1100
0- 900
0-9999
0-2000
1000
1100
1100
900
50
50
7-20 mA
Building Control System
0-10V
4-20 mA
0-10V
50
4-20 mA
0-10V
20
50
4-20 mA
Economizer
0-10V
15
1100
900
50
4-20 mA
0-10V
20
50
4-20 mA
0-10V
Health & Safety
—
5000
700
500
50
4-20 mA
Parking/Air Intakes/
Loading Docks
0-10V
—
4-20 mA
LEGEND
ppm — Parts Per Million
0.35
0.3
0.25
0.2
0.15
0.1
4 & 5 ton
6 ton
3 ton
0.05
0
0
4000
1000
3000
2000
5000
6000
C06133
Fig. 41 --- Perfect Humidityt Adaptive Dehumidification System Static Pressure Drop (in. wg)
C06134
C06041
Fig. 42 --- Belt Drive Motor Mounting
Fig. 43 --- Indoor--Fan Pulley Adjustment
26
Table 8—581B and 581C Fan Rpm at Motor Pulley Setting With Standard Motor*
MOTOR PULLEY TURNS OPEN
UNIT
1
1
1
1
1
1
0
/
2
1
1 /
2
2 /
3
3 /
4
4 /
5
5 /
2
6
2
2
2
2
024
036
048
060
072
936
906
876
971
1102
1389
1492
846
935
1061
1354
1445
816
898
1019
1318
1399
786
862
978
1283
1352
756
826
936
1248
1305
726
789
895
1212
1259
696
753
853
1177
1212
666
716
812
1141
1166
639
680
770
1106
1119
—
—
—
1070
—
—
—
—
1035
—
1044
1185
1460
1585
1008
1144
1425
1538
*Approximate fan rpm shown (standard motor/drive).
Table 9—581B Fan Rpm at Motor Pulley Setting With High-Static Motor*
MOTOR PULLEY TURNS OPEN
UNIT
1
1
1
1
1
1
0
/
1
1 /
2
2 /
3
3 /
4
4 /
5
5 /
6
2
2
2
2
2
2
1107
1107
—
036
048
060
072
1455
1455
1685
1685
1423
1423
1589
1589
1392
1392
1557
1557
1360
1360
1525
1525
1328
1328
1493
1493
1297
1297
1460
1460
1265
1265
1428
1428
1233
1233
1396
1396
1202
1202
1364
1364
1170
1170
1332
1332
1138
1138
1300
1300
1075
1075
—
—
—
*Approximate fan rpm shown (high-static motor/drive).
Table 10—Evaporator-Fan Motor Data — Standard Motor
UNIT
581B
581C
UNIT
PHASE
MAXIMUM
CONTINUOUS BHP*
MAXIMUM
OPERATING WATTS*
MAXIMUM
AMP DRAW
UNIT VOLTAGE
024
Single
Single
0.58
1.20
580
1000
208/230
2.0
208/230
208/230
460
4.9
4.9
2.2
2.2
4.9
4.9
2.2
2.2
7.0
6.7
3.0
3.0
6.7
3.0
3.0
036
Three
Single
Three
Single
Three
1.20
1.20
1.20
1.30
2.40
1000
1000
1000
1455
2120
575
208/230
208/230
460
048
575
208/230
208/230
460
060
072
575
208/230
460
575
Three
2.40
2120
LEGEND
Bhp — Brake Horsepower
*Extensive motor and electrical testing on these units ensures that the full horsepower and watts range of the motors can be utilized with confidence. Using the
fan motors up to the ratings shown in this table will not result in nuisance tripping or premature motor failure. Unit warranty will not be affected.
Table 11—Accessory Static Pressure
CFM
COMPONENT
600
0.010
—
800
0.020
—
1000
0.035
—
1250
0.045
—
1500
0.065
—
1750
0.080
0.100
2000
0.120
0.125
2250
0.145
0.150
2500
0.175
0.180
2750
0.220
0.225
3000
0.255
0.275
Vertical EconoMi$er IV
Horizontal EconoMi$er IV
Table 12—Evaporator-Fan Motor Data — High-Static Motors
UNIT
581B
UNIT
PHASE
MAXIMUM
CONTINUOUS BHP*
MAXIMUM
OPERATING WATTS*
MAXIMUM
AMP DRAW
UNIT VOLTAGE
208/230
460
575
208/230
460
575
208/230
460
575
208/230
460
575
6.7
3.0
3.0
6.7
3.0
3.0
8.6
3.9
3.9
8.6
3.9
3.9
036
048
060
072
Three
Three
Three
Three
2.40
2.40
2.90
2.90
2120
2120
2615
2615
LEGEND
Bhp — Brake Horsepower
*Extensive motor and electrical testing on these units ensures that the full horsepower and watts range of the motors can be utilized with confidence. Using the
fan motors up to the ratings shown in this table will not result in nuisance tripping or premature motor failure. Unit warranty will not be affected.
27
Table 13—581B Outdoor Sound Power (Total Unit)
ARI
OCTAVE BANDS
RATING
(decibels)
UNIT
63
125
250
500
1000
2000
4000
8000
036, 048
060, 072
76
80
55.9
59.1
66.0
68.9
64.0
68.7
66.2
71.9
68.4
74.0
64.5
68.9
61.7
65.7
57.3
59.0
LEGEND
ARI --- Air Conditioning and Refrigeration Institute
Table 14—581C Outdoor Sound Power (Total Unit)
ARI
RATING
(decibels)
OCTAVEBANDS
A ---
WEIGHTED
(db)
UNIT
63
125
250
500
1000
2000
4000
8000
024---048
060
76
80
76
80
55.9
59.1
66.0
68.9
64.0
68.7
66.2
71.9
68.4
74.0
64.5
68.9
61.7
65.7
57.3
59.0
GENERAL FAN PERFORMANCE NOTES
1. Values include losses for filters, unit casing, and wet coils. See Table 11 and Fig. 38 for accessory/FIOP static pressure information.
2. Extensive motor and electrical testing on these units ensures that the full range of the motor can be utilized with confidence. Using the
fan motors up to the ratings shown will not result in nuisance tripping or premature motor failure. Unit warranty will not be affected.
See Tables 8 and 9 for additional information.
3. Use of a field-supplied motor may affect wire sizing. Contact your Bryant representative to verify.
4. Interpolation is permissible. Do not extrapolate.
Table 15—Fan Performance 581C 024 — Vertical Discharge Units; Standard Motor (Belt Drive)**
EXTERNAL STATIC PRESSURE (in. wg)
AIRFLOW
0.1
Rpm
0.2
Rpm
0.4
Rpm
0.6
Rpm
0.8
Rpm
1.0
(Cfm)
Bhp
Bhp
Bhp
Bhp
Bhp
Rpm
878
902
937
957
981
Bhp
0.37
0.41
0.47
0.53
0.58
600
700
800
900
1000
500
529
547
570
599
0.08
0.09
0.10
0.13
0.15
531
567
592
620
650
0.08
0.09
0.12
0.14
0.16
607
633
660
691
717
0.14
0.16
0.19
0.22
0.26
713
739
761
793
818
0.21
0.24
0.27
0.32
0.36
788
816
845
870
894
0.29
0.32
0.37
0.42
0.47
28
Table 16—Fan Performance 581B 036, 581C 036 — Vertical Discharge Units; Standard Motor
(Belt Drive)*
EXTERNAL STATIC PRESSURE (in. wg)
AIRFLOW
CFM
0.2
Bhp
0.4
Bhp
0.6
0.8
Bhp
1.0
Bhp
Rpm
Watts
Rpm
Watts Rpm
Bhp
Watts
Rpm
Watts
Rpm
Watts
900
1000
1100
1200
1300
1400
1500
567
599
632
666
701
737
773
0.15
0.18
0.22
0.26
0.31
0.36
0.42
145
177
215
257
306
361
422
688
717
747
778
810
842
875
0.22
0.27
0.31
0.37
0.43
0.49
0.57
222
265
313
367
426
491
564
786
814
842
871
901
931
963
0.30
0.35
0.41
0.47
0.54
0.62
0.70
296
349
407
471
540
616
699
871
897
925
952
981
1010
1040
0.37
0.43
0.50
0.57
0.65
0.74
0.84
368
430
498
572
651
738
831
947
972
999
1025
1053
1081
1110
0.44
0.51
0.59
0.67
0.76
0.86
0.96
437
509
587
670
760
856
960
EXTERNAL STATIC PRESSURE (in. wg)
1.6
AIRFLOW
CFM
1.2
Bhp
1.4
Bhp
1.8
Bhp
2.0
Bhp
Rpm
Watts
Rpm
Watts Rpm
Bhp
Watts
Rpm
Watts
Rpm
Watts
900
1000
1100
1200
1300
1400
1500
1016
1041
1066
1093
1119
1147
1175
0.51
0.59
0.68
0.77
0.87
0.98
1.09
505
587
674
767
866
972
1086
1080
1104
1129
1155
1181
1208
—
0.57
0.67
0.76
0.87
0.98
1.09
—
572
662
759
861
970
1086
—
1139
1163
1188
1213
1239
—
0.64
0.74
0.85
0.96
1.08
—
637
737
843
955
1073
—
1195
1219
1243
1268
1294
—
0.71
0.81
0.93
1.05
1.18
—
702
811
925
1047
1175
—
1249
1272
1296
1321
—
—
—
0.77
0.89
1.01
1.14
—
—
—
765
883
1007
1137
—
—
—
—
—
—
—
—
—
NOTES:
LEGEND
1. Grey cells indicate field-supplied drive is required.
2. Maximum continuous bhp is 1.20.
Bhp — Brake Horsepower
Watts — Input Watts to Motor
*Motor drive range: 680 to 1044 rpm. All other rpms require field-supplied
drive.
3. See general fan performance notes.
Table 17—Fan Performance 581B 036, 581C 036 — Vertical Discharge Units; High-Static Motor
(Belt Drive)*
EXTERNAL STATIC PRESSURE (in. wg)
AIRFLOW
CFM
0.2
Bhp
0.4
Bhp
0.6
0.8
Bhp
1.0
Bhp
Rpm
Watts
Rpm
Watts
Rpm
Bhp
Watts
Rpm
Watts
Rpm
Watts
900
1000
1100
1200
1300
1400
1500
567
599
632
666
701
737
773
0.15
0.18
0.22
0.26
0.31
0.36
0.42
145
177
215
257
306
361
422
688
717
747
778
810
842
875
0.22
0.27
0.31
0.37
0.43
0.49
0.57
222
265
313
367
426
491
564
786
814
842
871
901
931
963
0.30
0.35
0.41
0.47
0.54
0.62
0.70
296
349
407
471
540
616
699
871
897
925
952
981
0.37
0.43
0.50
0.57
0.65
0.74
0.84
368
430
498
572
651
738
831
947
972
999
1025
1053
1081
1110
0.44
0.51
0.59
0.67
0.76
0.86
0.96
437
509
587
670
760
856
960
1010
1040
EXTERNAL STATIC PRESSURE (in. wg)
1.6
AIRFLOW
CFM
1.2
Bhp
1.4
Bhp
1.8
Bhp
2.0
Bhp
Rpm
Watts
Rpm
Watts
Rpm
Bhp
Watts
Rpm
Watts
Rpm
Watts
900
1000
1100
1200
1300
1400
1500
1016
1041
1066
1093
1119
1147
1175
0.51
0.59
0.68
0.77
0.87
0.98
1.09
505
587
674
767
866
972
1086
1080
1104
1129
1155
1181
1208
1235
0.57
0.67
0.76
0.87
0.98
1.09
1.22
572
662
759
861
970
1139
1163
1188
1213
1239
1265
1292
0.64
0.74
0.85
0.96
1.08
1.21
1.34
637
737
843
1195
1219
1243
1268
1294
1320
1346
0.71
0.81
0.93
1.05
1.18
1.32
1.46
702
811
925
1047
1175
1310
1452
1249
1272
1296
1321
1346
1371
1397
0.77
0.89
1.01
1.14
1.28
1.43
1.58
765
883
1007
1137
1275
1419
1572
955
1073
1199
1332
LEGEND
1086
1209
NOTES:
1. Grey cells indicate field-supplied drive is required.
2. Maximum continuous bhp is 2.40.
3. See general fan performance notes.
Bhp — Brake Horsepower
Watts — Input Watts to Motor
*Motor drive range: 1075 to 1455 rpm. All other rpms require field-supplied
drive.
29
Table 18—Fan Performance 581B 048, 581C 048 — Vertical Discharge Units; Standard Motor
(Belt Drive)*
EXTERNAL STATIC PRESSURE (in. wg)
AIRFLOW
CFM
0.2
Bhp
0.4
Bhp
0.6
0.8
Bhp
1.0
Bhp
Rpm
Watts
Rpm
Watts
Rpm
Bhp
Watts
Rpm
Watts
Rpm
Watts
1200
1300
1400
1500
1600
1700
1800
1900
2000
666
701
737
773
810
847
885
923
962
0.26
0.31
0.36
0.42
0.49
0.57
0.66
0.75
0.85
257
306
361
422
491
567
652
745
847
778
810
842
875
909
943
978
1014
1049
0.37
0.43
0.49
0.57
0.65
0.73
0.83
0.94
1.05
367
426
491
564
643
730
826
930
1043
871
901
931
963
994
1027
1060
1093
—
0.47
0.54
0.62
0.70
0.79
0.89
1.00
1.11
—
471
540
616
699
790
888
994
1109
—
952
981
0.57
0.65
0.74
0.84
0.94
1.05
1.16
—
572
651
738
831
932
1040
1157
—
1025
1053
1081
1110
1140
1170
—
0.67
0.76
0.86
0.96
1.08
1.20
—
670
760
856
960
1070
1189
—
1010
1040
1070
1101
1133
—
—
—
—
—
—
—
—
—
—
EXTERNAL STATIC PRESSURE (in. wg)
1.6
AIRFLOW
CFM
1.2
Bhp
1.4
Bhp
1.8
Bhp
2.0
Bhp
Rpm
Watts
Rpm
Watts
Rpm
Bhp
Watts
Rpm
Watts
Rpm
Watts
1200
1300
1400
1500
1600
1700
1800
1900
2000
1093
1119
1147
1175
—
—
—
—
—
0.77
0.87
0.98
1.09
—
—
—
—
—
767
866
972
1086
—
—
—
—
—
1155
1181
1208
—
—
—
—
—
—
0.87
0.98
1.09
—
—
—
—
—
—
861
970
1086
—
—
—
—
—
—
1213
1239
—
—
—
—
—
—
—
0.96
1.08
—
—
—
—
—
—
—
955
1073
—
—
—
—
—
—
—
1268
1294
—
—
—
—
—
—
—
1.05
1.18
—
—
—
—
—
—
—
1047
1175
—
—
—
—
—
—
—
1321
—
—
—
—
—
—
—
—
1.14
—
—
—
—
—
—
—
—
1137
—
—
—
—
—
—
—
—
NOTES:
LEGEND
1. Grey cells indicate field-supplied drive is required.
2. Maximum continuous bhp is 2.40.
3. See general fan performance notes.
Bhp — Brake Horsepower
Watts — Input Watts to Motor
*Motor drive range: 770 to 1185 rpm. All other rpms require field-supplied drive.
30
Table 19—Fan Performance 581B 048, 581C 048 — Vertical Discharge Units; High-Static Motor (Belt Drive)*
EXTERNAL STATIC PRESSURE (in. wg)
AIRFLOW
CFM
0.2
Bhp
0.4
Bhp
0.6
0.8
Bhp
1.0
Bhp
Rpm
Watts
Rpm
Watts Rpm
Bhp
Watts
Rpm
Watts
Rpm
Watts
670
760
856
960
1070
1189
1316
1453
1598
1200
1300
1400
1500
1600
1700
1800
1900
2000
666
701
737
773
810
847
885
923
962
0.26
0.31
0.36
0.42
0.49
0.57
0.66
0.75
0.85
257
306
361
422
491
567
652
745
847
778
810
842
875
909
943
978
1014
1049
0.37
0.43
0.49
0.57
0.65
0.73
0.83
0.94
1.05
367
426
491
564
643
730
826
930
1043
871
901
931
963
994
1027
1060
1093
1127
0.47
0.54
0.62
0.70
0.79
0.89
1.00
1.11
1.24
471
540
616
699
790
888
994
1109
1233
952
981
0.57
0.65
0.74
0.84
0.94
1.05
1.16
1.29
1.42
572
651
738
831
932
1040
1157
1283
1417
1025
1053
1081
1110
1140
1170
1200
1231
1263
0.67
0.76
0.86
0.96
1.08
1.20
1.32
1.46
1.61
1010
1040
1070
1101
1133
1165
1198
EXTERNAL STATIC PRESSURE (in. wg)
1.6
AIRFLOW
CFM
1.2
Bhp
1.4
Bhp
1.8
Bhp
2.0
Bhp
Rpm
Watts
Rpm
Watts Rpm
Bhp
Watts
Rpm
Watts
Rpm
Watts
1200
1300
1400
1500
1600
1700
1800
1900
2000
1093
1119
1147
1175
1204
1233
1262
1293
1323
0.77
0.87
0.98
1.09
1.21
1.34
1.48
1.63
1.79
767
866
972
1086
1207
1336
1473
1620
1776
1155
1181
1208
1235
1263
1292
1321
1350
1380
0.87
0.98
1.09
1.22
1.35
1.49
1.64
1.79
1.96
861
970
1213
1239
1265
1292
1320
1348
1376
1405
1434
0.96
1.08
1.21
1.34
1.48
1.63
1.79
1.96
2.13
955
1073
1199
1332
1472
1622
1779
1946
2123
1268
1294
1320
1346
1373
1401
1428
1457
1486
1.05
1.18
1.32
1.46
1.61
1.77
1.94
2.12
2.31
1047
1175
1310
1452
1603
1762
1930
2106
2293
1321
1346
1371
1397
1424
1451
1479
1506
—
1.14
1.28
1.43
1.58
1.74
1.91
2.09
2.28
—
1137
1275
1419
1572
1732
1901
2078
2265
—
1086
1209
1340
1480
1627
1784
1950
NOTES:
LEGEND
1. Grey cells indicate field-supplied drive is required.
2. Maximum continuous bhp is 2.40.
Bhp — Brake Horsepower
Watts — Input Watts to Motor
*Motor drive range: 1075 to 1455 rpm. All other rpms require field-supplied
drive.
3. See general fan performance notes.
Table 20—Fan Performance 581B 060, 581C 060 Single-Phase — Vertical Discharge Units;
Standard Motor (Belt Drive)*
EXTERNAL STATIC PRESSURE (in. wg)
AIRFLOW
CFM
0.2
Bhp
0.4
Bhp
0.6
0.8
Bhp
1.0
Bhp
Rpm
Watts
Rpm
Watts Rpm
Bhp
Watts
Rpm
Watts
Rpm
Watts
1500
1600
1700
1800
1900
2000
2100
2200
2300
2400
2500
848
887
927
0.42
0.49
0.57
0.65
0.75
0.85
0.97
1.09
1.23
—
371
433
502
579
663
757
859
970
1091
—
968
1004
1040
1077
1115
1153
1191
1230
—
0.55
0.63
0.71
0.81
0.91
1.03
1.15
1.29
—
486
556
633
718
811
913
1023
1143
—
1069
1103
1137
1172
1208
1244
—
—
—
—
—
0.68
0.76
0.86
0.96
1.08
1.20
—
—
—
—
—
600
678
763
856
957
1066
—
—
—
—
—
1158
1190
1223
1257
1291
—
—
—
—
—
0.80
0.90
1.00
1.12
1.24
—
—
—
—
—
715
800
892
993
1101
—
—
—
—
—
1238
1269
1302
1334
—
—
—
—
—
—
—
0.94
1.04
1.15
1.27
—
—
—
—
—
—
—
831
922
1022
1130
—
—
—
—
—
—
—
967
1007
1048
1090
1131
1173
—
—
—
—
—
—
—
—
—
—
—
—
—
EXTERNAL STATIC PRESSURE (in. wg)
1.6
AIRFLOW
CFM
1.2
Bhp
1.4
Bhp
1.8
Bhp
2.0
Bhp
Rpm
Watts
Rpm
Watts Rpm
Bhp
Watts
Rpm
Watts
Rpm
Watts
1500
1600
1700
1800
1900
2000
2100
2200
2300
2400
2500
1312
1342
1374
—
—
—
—
—
—
—
1.07
1.18
1.30
—
—
—
—
—
—
—
948
1047
1153
—
—
—
—
—
—
—
1380
—
—
—
—
—
—
—
—
1.20
—
—
—
—
—
—
—
—
—
—
1067
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
NOTES:
LEGEND
1. Grey cells indicate field-supplied drive is required.
2. Maximum continuous bhp is 1.30.
Bhp — Brake Horsepower
Watts — Input Watts to Motor
*Motor drive range: 1035 to 1460 rpm. All other rpms require field-supplied
drive.
3. See general fan performance notes.
31
Table 21—Fan Performance 581B 060, 581C 060 Three-Phase — Vertical Discharge Units;
Standard Motor (Belt Drive)*
EXTERNAL STATIC PRESSURE (in. wg)
AIRFLOW
CFM
0.2
Bhp
0.4
Bhp
0.6
0.8
Bhp
1.0
Bhp
Rpm
Watts
Rpm
Watts Rpm
Bhp
Watts
Rpm
Watts
Rpm
Watts
831
922
1500
1600
1700
1800
1900
2000
2100
2200
2300
2400
2500
848
887
927
0.42
0.49
0.57
0.65
0.75
0.85
0.97
1.09
1.23
1.38
1.54
371
433
502
579
663
757
859
970
968
1004
1040
1077
1115
1153
1191
1230
1269
1309
1349
0.55
0.63
0.71
0.81
0.91
1.03
1.15
1.29
1.43
1.59
1.76
486
556
633
718
811
1069
1103
1137
1172
1208
1244
1281
1318
1355
1393
1431
0.68
0.76
0.86
0.96
1.08
1.20
1.33
1.48
1.63
1.80
1.98
600
678
763
856
957
1066
1185
1313
1451
1600
1759
1158
1190
1223
1257
1291
1326
1361
1397
1433
1470
1506
0.80
0.90
1.00
1.12
1.24
1.37
1.51
1.67
1.83
2.01
2.20
715
800
892
1238
1269
1302
1334
1368
1401
1435
1470
1505
1540
—
0.94
1.04
1.15
1.27
1.40
1.54
1.69
1.86
2.03
2.21
—
1022
1130
1246
1371
1505
1649
1803
1967
—
967
993
1007
1048
1090
1131
1173
1215
1258
1101
1219
1345
1481
1627
1784
1951
913
1023
1143
1273
1413
1564
1091
1223
1365
EXTERNAL STATIC PRESSURE (in. wg)
1.6
AIRFLOW
CFM
1.2
Bhp
1.4
Bhp
1.8
Bhp
2.0
Bhp
Rpm
Watts
Rpm
Watts Rpm
Bhp
Watts
Rpm
Watts
Rpm
Watts
1500
1600
1700
1800
1900
2000
2100
2200
2300
2400
2500
1312
1342
1374
1406
1438
1471
1504
1538
1572
—
1.07
1.18
1.30
1.43
1.57
1.72
1.87
2.04
2.23
—
948
1047
1153
1268
1391
1523
1665
1816
1978
—
1380
1411
1441
1473
1504
1536
1569
1602
—
1.20
1.32
1.45
1.58
1.73
1.89
2.06
2.23
—
1067
1173
1286
1407
1537
1677
1825
1984
—
1445
1474
1505
1535
1567
1598
1630
—
1.34
1.46
1.60
1.74
1.90
2.06
2.24
—
1189
1300
1420
1548
1685
1831
1986
—
1506
1535
1565
1595
1626
1657
—
—
—
—
—
1.48
1.61
1.75
1.90
2.06
2.24
—
—
—
—
—
1312
1429
1555
1690
1833
1986
—
—
—
—
—
1564
1593
1622
1652
1682
—
—
—
—
—
1.62
1.76
1.91
2.06
2.23
—
—
—
—
—
1437
1560
1692
1833
1983
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
NOTES:
LEGEND
1. Grey cells indicate field-supplied drive is required.
2. Maximum continuous bhp is 2.40.
Bhp — Brake Horsepower
Watts — Input Watts to Motor
*Motor drive range: 1035 to 1460 rpm. All other rpms require field-supplied
drive.
3. See general fan performance notes.
Table 22—Fan Performance 581B 060, 581C 060 — Vertical Discharge Units; High-Static Motor (Belt Drive)*
EXTERNAL STATIC PRESSURE (in. wg)
AIRFLOW
CFM
0.2
Bhp
0.4
Bhp
0.6
0.8
Bhp
1.0
Bhp
Rpm
Watts
Rpm
Watts Rpm
Bhp
Watts
Rpm
Watts
Rpm
Watts
831
922
1500
1600
1700
1800
1900
2000
2100
2200
2300
2400
2500
848
887
927
0.42
0.49
0.57
0.65
0.75
0.85
0.97
1.09
1.23
1.38
1.54
371
433
502
579
663
757
859
970
968
1004
1040
1077
1115
1153
1191
1230
1269
1309
1349
0.55
0.63
0.71
0.81
0.91
1.03
1.15
1.29
1.43
1.59
1.76
486
556
633
718
811
1069
1103
1137
1172
1208
1244
1281
1318
1355
1393
1431
0.68
0.76
0.86
0.96
1.08
1.20
1.33
1.48
1.63
1.80
1.98
600
678
763
856
957
1066
1185
1313
1451
1600
1759
1158
1190
1223
1257
1291
1326
1361
1397
1433
1470
1506
0.80
0.90
1.00
1.12
1.24
1.37
1.51
1.67
1.83
2.01
2.20
715
800
892
1238
1269
1302
1334
1368
1401
1435
1470
1505
1540
1576
0.94
1.04
1.15
1.27
1.40
1.54
1.69
1.86
2.03
2.21
2.41
1022
1130
1246
1371
1505
1649
1803
1967
2142
967
993
1007
1048
1090
1131
1173
1215
1258
1101
1219
1345
1481
1627
1784
1951
913
1023
1143
1273
1413
1564
1091
1223
1365
EXTERNAL STATIC PRESSURE (in. wg)
1.6
AIRFLOW
CFM
1.2
Bhp
1.4
Bhp
1.8
Bhp
2.0
Bhp
Rpm
Watts
Rpm
Watts Rpm
Bhp
Watts
Rpm
Watts
Rpm
Watts
1500
1600
1700
1800
1900
2000
2100
2200
2300
2400
2500
1312
1342
1374
1406
1438
1471
1504
1538
1572
1607
1642
1.07
1.18
1.30
1.43
1.57
1.72
1.87
2.04
2.23
2.42
2.63
948
1047
1153
1268
1391
1523
1665
1816
1978
2150
2333
1380
1411
1441
1473
1504
1536
1569
1602
1635
1669
1704
1.20
1.32
1.45
1.58
1.73
1.89
2.06
2.23
2.42
2.63
2.84
1067
1173
1286
1407
1537
1677
1825
1984
2153
2332
2523
1445
1474
1505
1535
1567
1598
1630
1663
1695
1729
—
1.34
1.46
1.60
1.74
1.90
2.06
2.24
2.42
2.62
2.83
—
1189
1300
1420
1548
1685
1831
1986
2152
2328
2515
—
1506
1535
1565
1595
1626
1657
1688
1720
1753
—
1.48
1.61
1.75
1.90
2.06
2.24
2.42
2.61
2.82
—
1312
1429
1555
1690
1833
1986
2149
2321
2504
—
1564
1593
1622
1652
1682
1713
1744
1775
—
1.62
1.76
1.91
2.06
2.23
2.41
2.60
2.81
—
1437
1560
1692
1833
1983
2142
2312
2491
—
—
—
—
—
—
—
—
—
—
NOTES:
LEGEND
1. Grey cells indicate field-supplied drive is required.
2. Maximum continuous bhp is 2.90.
Bhp — Brake Horsepower
Watts — Input Watts to Motor
*Motor drive range: 1300 to 1685 rpm. All other rpms require field-supplied drive.
3. See general fan performance notes.
32
Table 23—Fan Performance 581C 072 — Vertical Discharge Units; Standard Motor (Belt Drive)*
EXTERNAL STATIC PRESSURE (in. wg)
AIRFLOW
CFM
0.2
Bhp
0.4
Bhp
0.6
0.8
Bhp
1.0
Bhp
Rpm
Watts
Rpm
Watts Rpm
Bhp
Watts
Rpm
Watts
Rpm
Watts
1800
1900
2000
2100
2200
2300
2400
2500
2600
2700
2800
2900
3000
967
1008
1049
1091
1133
1176
1218
1261
1305
1348
1392
1435
1479
0.63
0.72
0.82
0.93
1.05
1.18
1.32
1.47
1.63
1.80
1.99
2.19
2.40
563
643
731
827
933
1047
1170
1304
1448
1602
1768
1945
2135
1075
1112
1151
1189
1229
1268
1308
1349
1390
1431
1472
—
0.80
0.91
1.02
1.14
1.26
1.40
1.55
1.72
1.89
2.07
2.27
—
715
805
903
1170
1205
1241
1278
1315
1352
1390
1429
1468
1507
—
0.97
1.08
1.20
1.33
1.47
1.62
1.78
1.96
2.14
2.33
—
861
960
1255
1289
1323
1358
1393
1429
1466
1503
1540
—
1.13
1.25
1.38
1.52
1.67
1.84
2.01
2.19
2.38
—
1002
1111
1228
1353
1487
1630
1782
1945
2117
—
1333
1366
1399
1433
1467
1501
1537
—
—
—
—
—
1.28
1.42
1.56
1.71
1.87
2.04
2.23
—
—
—
—
—
1139
1258
1384
1519
1662
1815
1977
—
—
—
—
—
1068
1183
1308
1441
1584
1736
1900
2073
—
1008
1123
1247
1380
1523
1677
1841
2016
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
EXTERNAL STATIC PRESSURE (in. wg)
1.6
AIRFLOW
CFM
1.2
Bhp
1.4
Bhp
1.8
Bhp
2.0
Bhp
Rpm
Watts
Rpm
Watts Rpm
Bhp
Watts
Rpm
Watts
Rpm
Watts
1800
1900
2000
2100
2200
2300
2400
2500
2600
2700
2800
2900
3000
1406
1438
1470
1502
1535
1569
—
—
—
—
—
1.43
1.58
1.73
1.89
2.06
2.25
—
—
—
—
—
1273
1401
1537
1681
1834
1996
—
—
—
—
—
1475
1505
1537
1568
1600
—
—
—
—
—
1.58
1.73
1.90
2.07
2.25
—
—
—
—
—
1403
1541
1686
1840
2002
—
—
—
—
—
1540
1569
1600
1631
—
—
—
—
—
—
—
1.72
1.89
2.06
2.25
—
—
—
—
—
—
—
1531
1678
1833
1996
—
—
—
—
—
—
—
1601
1630
1660
—
—
—
—
—
—
—
1.87
2.04
2.23
—
—
—
—
—
—
—
1657
1813
1977
—
—
—
—
—
—
—
1660
1689
1718
—
—
—
—
—
—
—
2.00
2.19
2.38
—
—
—
—
—
—
—
1780
1945
2118
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
NOTES:
LEGEND
1. Grey cells indicate field-supplied drive is required.
2. Maximum continuous bhp is 2.40.
Bhp — Brake Horsepower
Watts — Input Watts to Motor
*Motor drive range: 1119 to 1585 rpm. All other rpms require field-supplied drive.
3. See general fan performance notes.
33
Table 24—Fan Performance 581C 072 — Vertical Discharge Units; High-Static Motor (Belt Drive)*
EXTERNAL STATIC PRESSURE (in. wg)
AIRFLOW
CFM
0.2
Bhp
0.4
Bhp
0.6
0.8
Bhp
1.0
Bhp
Rpm
Watts
Rpm
Watts Rpm
Bhp
Watts
Rpm
Watts
Rpm
Watts
1800
1900
2000
2100
2200
2300
2400
2500
2600
2700
2800
2900
3000
967
1008
1049
1091
1133
1176
1218
1261
1305
1348
1392
1435
1479
0.63
0.72
0.82
0.93
1.05
1.18
1.32
1.47
1.63
1.80
1.99
2.19
2.40
563
643
731
827
933
1047
1170
1304
1448
1602
1768
1945
2135
1075
1112
1151
1189
1229
1268
1308
1349
1390
1431
1472
1514
1556
0.80
0.91
1.02
1.14
1.26
1.40
1.55
1.72
1.89
2.07
2.27
2.48
2.70
715
805
903
1170
1205
1241
1278
1315
1352
1390
1429
1468
1507
1547
1587
—
0.97
1.08
1.20
1.33
1.47
1.62
1.78
1.96
2.14
2.33
2.54
2.76
—
861
960
1255
1289
1323
1358
1393
1429
1466
1503
1540
1578
1616
—
1.13
1.25
1.38
1.52
1.67
1.84
2.01
2.19
2.38
2.59
2.81
—
1002
1111
1228
1353
1487
1630
1782
1945
2117
2301
2495
—
1333
1366
1399
1433
1467
1501
1537
1572
1608
1645
—
1.28
1.42
1.56
1.71
1.87
2.04
2.23
2.42
2.62
2.84
—
1139
1258
1384
1519
1662
1815
1977
2149
2331
2524
—
1068
1183
1308
1441
1584
1736
1900
2073
2258
2455
—
1008
1123
1247
1380
1523
1677
1841
2016
2203
2402
—
—
—
—
—
—
—
—
—
EXTERNAL STATIC PRESSURE (in. wg)
1.6
AIRFLOW
CFM
1.2
Bhp
1.4
Bhp
1.8
Bhp
2.0
Bhp
Rpm
Watts
Rpm
Watts Rpm
Bhp
Watts
Rpm
Watts
Rpm
Watts
1800
1900
2000
2100
2200
2300
2400
2500
2600
2700
2800
2900
3000
1406
1438
1470
1502
1535
1569
1603
1638
1673
—
1.43
1.58
1.73
1.89
2.06
2.25
2.44
2.64
2.86
—
1273
1401
1537
1681
1834
1996
2167
2349
2541
—
1475
1505
1537
1568
1600
1633
1666
1700
—
—
—
—
—
1.58
1.73
1.90
2.07
2.25
2.45
2.65
2.87
—
—
—
—
—
1403
1541
1686
1840
2002
2174
2355
2546
—
—
—
—
—
1540
1569
1600
1631
1662
1694
1727
—
—
—
—
—
1.72
1.89
2.06
2.25
2.44
2.64
2.86
—
—
—
—
—
1531
1678
1833
1996
2167
2348
2539
—
—
—
—
—
1601
1630
1660
1690
1721
1752
—
—
—
—
—
1.87
2.04
2.23
2.42
2.62
2.84
—
—
—
—
—
1657
1813
1977
2149
2330
2520
—
—
—
—
—
1660
1689
1718
1747
1778
—
—
—
—
—
2.00
2.19
2.38
2.59
2.80
—
—
—
—
—
1780
1945
2118
2300
2490
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
NOTES:
LEGEND
1. Grey cells indicate field-supplied drive is required.
2. Maximum continuous bhp is 2.90.
Bhp — Brake Horsepower
Watts — Input Watts to Motor
*Motor drive range: 1300 to 1685 rpm. All other rpms require field-supplied drive.
3. See general fan performance notes.
Table 25—Fan Performance 581B 024 — Horizontal Discharge Units; Standard Motor (Belt Drive)**
EXTERNAL STATIC PRESSURE (in. wg)
AIRFLOW
(Cfm)
0.1
Rpm
0.2
Rpm
0.4
Rpm
0.6
Rpm
0.8
Rpm
1.0
Bhp
Bhp
Bhp
Bhp
Bhp
Rpm
868
892
927
947
971
Bhp
0.37
0.41
0.47
0.53
0.58
600
700
800
900
1000
490
519
537
560
589
0.08
0.09
0.10
0.13
0.15
521
557
582
610
640
0.08
0.09
0.12
0.14
0.16
597
623
650
681
707
0.14
0.16
0.19
0.22
0.26
703
729
751
783
808
0.21
0.24
0.27
0.32
0.36
788
816
845
870
894
0.29
0.32
0.37
0.42
0.47
34
Table 26—Fan Performance 581B 036, 581C 036 — Horizontal Discharge Units; Standard Motor
(Belt Drive)*
EXTERNAL STATIC PRESSURE (in. wg)
AIRFLOW
CFM
0.2
Bhp
0.4
Bhp
0.6
0.8
Bhp
1.0
Bhp
Rpm
Watts
Rpm
Watts Rpm
Bhp
Watts
Rpm
Watts
Rpm
Watts
900
1000
1100
1200
1300
1400
1500
553
582
612
643
675
707
740
0.14
0.16
0.20
0.23
0.28
0.33
0.38
134
163
196
234
277
326
382
681
707
734
762
790
819
849
0.22
0.26
0.30
0.34
0.40
0.45
0.52
221
257
297
343
394
452
515
782
807
833
859
886
913
941
0.32
0.36
0.41
0.46
0.52
0.58
0.66
316
358
405
458
517
581
653
870
894
919
944
969
996
1023
0.42
0.47
0.52
0.58
0.65
0.72
0.80
417
466
519
579
644
716
795
948
971
995
1020
1044
1070
1096
0.53
0.58
0.64
0.71
0.78
0.86
0.95
526
580
639
705
777
855
941
EXTERNAL STATIC PRESSURE (in. wg)
1.6
AIRFLOW
CFM
1.2
Bhp
1.4
Bhp
1.8
Bhp
2.0
Bhp
Rpm
Watts
Rpm
Watts Rpm
Bhp
Watts
Rpm
Watts
Rpm
Watts
900
1000
1100
1200
1300
1400
1500
1019
1042
1065
1089
1113
1138
1163
0.64
0.70
0.77
0.84
0.92
1.01
1.10
640
700
765
837
915
1000
1092
1084
1107
1130
1153
1177
1201
—
0.76
0.83
0.90
0.98
1.06
1.15
—
760
825
896
974
1058
1149
—
1146
1168
1190
1213
—
—
—
0.89
0.96
1.04
1.12
—
—
—
885
956
1032
1115
—
—
—
1203
1225
1247
—
—
—
1.02
1.10
1.18
—
—
—
1016
1091
1173
—
—
—
1258
—
—
—
—
—
—
1.16
—
—
—
—
—
—
1152
—
—
—
—
—
—
—
—
—
NOTES:
LEGEND
1. Grey cells indicate field-supplied drive is required.
2. Maximum continuous bhp is 1.20.
Bhp — Brake Horsepower
Watts — Input Watts to Motor
*Motor drive range: 680 to 1044 rpm. All other rpms require field-supplied drive.
3. See general fan performance notes.
Table 27—Fan Performance 581B 036, 581C 036 — Horizontal Discharge Units; High-Static Motor
(Belt Drive)*
EXTERNAL STATIC PRESSURE (in. wg)
AIRFLOW
CFM
0.2
Bhp
0.4
Bhp
0.6
0.8
Bhp
1.0
Bhp
Rpm
Watts
Rpm
Watts Rpm
Bhp
Watts
Rpm
Watts
Rpm
Watts
900
1000
1100
1200
1300
1400
1500
553
582
612
643
675
707
740
0.14
0.16
0.20
0.23
0.28
0.33
0.38
134
163
196
234
277
326
382
681
707
734
762
790
819
849
0.22
0.26
0.30
0.34
0.40
0.45
0.52
221
257
297
343
394
452
515
782
807
833
859
886
913
941
0.32
0.36
0.41
0.46
0.52
0.58
0.66
316
358
405
458
517
581
653
870
894
919
944
969
996
1023
0.42
0.47
0.52
0.58
0.65
0.72
0.80
417
466
519
579
644
716
795
948
971
995
1020
1044
1070
1096
0.53
0.58
0.64
0.71
0.78
0.86
0.95
526
580
639
705
777
855
941
EXTERNAL STATIC PRESSURE (in. wg)
1.6
AIRFLOW
CFM
1.2
Bhp
1.4
Bhp
1.8
Bhp
2.0
Bhp
Rpm
Watts
Rpm
Watts Rpm
Bhp
Watts
Rpm
Watts
Rpm
Watts
900
1000
1100
1200
1300
1400
1500
1019
1042
1065
1089
1113
1138
1163
0.64
0.70
0.77
0.84
0.92
1.01
1.10
640
700
765
837
915
1000
1092
1084
1107
1130
1153
1177
1201
1226
0.76
0.83
0.90
0.98
1.06
1.15
1.25
760
825
896
1146
1168
1190
1213
1237
1261
1285
0.89
0.96
1.04
1.12
1.21
1.31
1.41
885
956
1032
1115
1205
1303
1407
1203
1225
1247
1270
1293
1317
1341
1.02
1.10
1.18
1.27
1.36
1.47
1.58
1016
1091
1173
1262
1358
1461
1571
1258
1279
1301
1324
1347
1370
1394
1.16
1.24
1.33
1.42
1.52
1.63
1.75
1152
1232
1319
1413
1514
1623
1740
974
1058
1149
1247
NOTES:
LEGEND
1. Grey cells indicate field-supplied drive is required.
2. Maximum continuous bhp is 2.40.
Bhp — Brake Horsepower
Watts — Input Watts to Motor
*Motor drive range: 1075 to 1455 rpm. All other rpms require field-supplied drive.
3. See general fan performance notes.
35
Table 28—Fan Performance 581B 048, 581C 048 — Horizontal Discharge Units; Standard Motor
(Belt Drive)*
EXTERNAL STATIC PRESSURE (in. wg)
AIRFLOW
CFM
0.2
Bhp
0.4
Bhp
0.6
0.8
Bhp
1.0
Bhp
Rpm
Watts
Rpm
Watts Rpm
Bhp
Watts
Rpm
Watts
Rpm
Watts
1200
1300
1400
1500
1600
1700
1800
1900
2000
643
675
707
740
773
807
841
875
910
0.23
0.28
0.33
0.38
0.45
0.52
0.59
0.68
0.77
234
277
326
382
444
513
589
674
767
762
790
819
849
879
910
942
974
1006
0.34
0.40
0.45
0.52
0.59
0.67
0.75
0.85
0.95
343
394
452
515
586
663
749
842
944
859
886
913
941
970
0.46
0.52
0.58
0.66
0.73
0.82
0.91
1.02
1.13
458
517
581
653
731
817
910
1012
1122
944
969
996
1023
1050
1078
1106
1135
—
0.58
0.65
0.72
0.80
0.88
0.98
1.08
1.19
—
579
644
716
795
880
973
1074
1184
—
1020
1044
1070
1096
1123
1150
—
0.71
0.78
0.86
0.95
1.04
1.14
—
705
777
855
941
1034
1134
—
999
1029
1059
1090
—
—
—
—
—
—
EXTERNAL STATIC PRESSURE (in. wg)
1.6
AIRFLOW
CFM
1.2
Bhp
1.4
Bhp
1.8
Bhp
2.0
Bhp
Rpm
Watts
Rpm
Watts Rpm
Bhp
Watts
Rpm
Watts
Rpm
Watts
1200
1300
1400
1500
1600
1700
1800
1900
2000
1089
1113
1138
1163
1189
—
—
—
—
0.84
0.92
1.01
1.10
1.20
—
—
—
—
837
915
1000
1092
1191
—
—
—
—
1153
1177
1201
—
—
—
—
—
—
0.98
1.06
1.15
—
—
—
—
—
—
974
1058
1149
—
—
—
—
—
—
1213
—
—
—
—
—
—
—
—
1.12
—
—
—
—
—
—
—
—
1115
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
NOTES:
LEGEND
1. Grey cells indicate field-supplied drive is required.
2. Maximum continuous bhp is 1.20.
Bhp — Brake Horsepower
Watts — Input Watts to Motor
*Motor drive range: 770 to 1185 rpm. All other rpms require field-supplied drive.
3. See general fan performance notes.
Table 29—Fan Performance 581B 048, 581C 048 — Horizontal Discharge Units; High-Static Motor
(Belt Drive)*
EXTERNAL STATIC PRESSURE (in. wg)
AIRFLOW
CFM
0.2
Bhp
0.4
Bhp
0.6
0.8
Bhp
1.0
Bhp
Rpm
Watts
Rpm
Watts Rpm
Bhp
Watts
Rpm
Watts
Rpm
Watts
705
777
855
941
1034
1134
1242
1360
1485
1200
1300
1400
1500
1600
1700
1800
1900
2000
643
675
707
740
773
807
841
875
910
0.23
0.28
0.33
0.38
0.45
0.52
0.59
0.68
0.77
234
277
326
382
444
513
589
674
767
762
790
819
849
879
910
942
974
1006
0.34
0.40
0.45
0.52
0.59
0.67
0.75
0.85
0.95
343
394
452
515
586
663
749
842
944
859
886
913
941
970
0.46
0.52
0.58
0.66
0.73
0.82
0.91
1.02
1.13
458
517
581
653
731
817
910
1012
1122
944
969
996
1023
1050
1078
1106
1135
1165
0.58
0.65
0.72
0.80
0.88
0.98
1.08
1.19
1.31
579
644
716
795
880
1020
1044
1070
1096
1123
1150
1177
1205
1234
0.71
0.78
0.86
0.95
1.04
1.14
1.25
1.37
1.49
999
973
1029
1059
1090
1074
1184
1302
EXTERNAL STATIC PRESSURE (in. wg)
1.6
AIRFLOW
CFM
1.2
Bhp
1.4
Bhp
1.8
Bhp
2.0
Bhp
Rpm
Watts
Rpm
Watts Rpm
Bhp
Watts
Rpm
Watts
Rpm
Watts
1200
1300
1400
1500
1600
1700
1800
1900
2000
1089
1113
1138
1163
1189
1216
1242
1270
1297
0.84
0.92
1.01
1.10
1.20
1.31
1.42
1.55
1.68
837
915
1153
1177
1201
1226
1252
1277
1303
1330
1357
0.98
1.06
1.15
1.25
1.36
1.48
1.60
1.73
1.87
974
1058
1149
1247
1353
1468
1590
1721
1862
1213
1237
1261
1285
1310
1335
1361
1387
1414
1.12
1.21
1.31
1.41
1.53
1.65
1.78
1.92
2.07
1115
1205
1303
1407
1520
1640
1770
1908
2055
1270
1293
1317
1341
1365
1390
1415
1441
1467
1.27
1.36
1.47
1.58
1.70
1.83
1.96
2.11
2.26
1262
1358
1461
1571
1690
1817
1953
2098
2252
1324
1347
1370
1394
1418
1442
1467
1493
—
1.42
1.52
1.63
1.75
1.87
2.01
2.15
2.30
—
1413
1514
1623
1740
1865
1998
2140
2292
—
1000
1092
1191
1299
1414
1538
1672
NOTES:
LEGEND
1. Grey cells indicate field-supplied drive is required.
2. Maximum continuous bhp is 2.40.
Bhp — Brake Horsepower
Watts — Input Watts to Motor
*Motor drive range: 1075 to 1455 rpm. All other rpms require field-supplied drive.
3. See general fan performance notes.
36
Table 30—Fan Performance 581B 060, 581C 060 Single-Phase — Horizontal Discharge Units;
Standard Motor (Belt Drive)*
EXTERNAL STATIC PRESSURE (in. wg)
AIRFLOW
CFM
0.2
Bhp
0.4
Bhp
0.6
0.8
Bhp
1.0
Bhp
Rpm
Watts
Rpm
Watts Rpm
Bhp
Watts
Rpm
Watts
Rpm
Watts
1500
1600
1700
1800
1900
2000
2100
2200
2300
2400
2500
800
839
879
919
960
1001
1043
1085
1127
—
0.39
0.46
0.54
0.63
0.73
0.84
0.96
1.09
1.23
—
350
412
483
561
648
744
850
966
1092
—
904
938
974
1010
1047
1085
1123
1162
—
0.49
0.57
0.65
0.75
0.85
0.96
1.09
1.22
—
438
505
580
663
754
855
965
1086
—
999
1030
1062
1095
1129
1163
1199
—
0.60
0.68
0.77
0.87
0.98
1.09
1.22
—
535
605
684
771
867
972
1086
—
1087
1115
1144
1174
1206
1238
—
—
—
—
—
0.72
0.80
0.90
1.00
1.11
1.23
—
—
—
—
—
640
714
796
886
986
1095
—
—
—
—
—
1169
1195
1221
1250
1279
—
—
—
—
—
0.85
0.93
1.03
1.14
1.25
—
—
—
—
—
753
829
914
1008
1111
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
EXTERNAL STATIC PRESSURE (in. wg)
1.6
AIRFLOW
CFM
1.2
Bhp
1.4
Bhp
1.8
Bhp
2.0
Bhp
Rpm
Watts
Rpm
Watts Rpm
Bhp
Watts
Rpm
Watts
Rpm
Watts
1500
1600
1700
1800
1900
2000
2100
2200
2300
2400
2500
1247
1270
1295
1321
—
—
—
—
—
—
—
0.98
1.07
1.17
1.28
—
—
—
—
—
—
—
873
952
1040
1137
—
—
—
—
—
—
—
1320
1342
—
—
—
—
—
—
—
1.13
1.22
—
—
—
—
—
—
—
1002
1083
—
—
—
—
—
—
—
1390
—
—
—
—
—
—
—
—
1.28
—
—
—
—
—
—
—
—
—
—
1137
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
NOTES:
LEGEND
1. Grey cells indicate field-supplied drive is required.
2. Maximum continuous bhp is 1.30.
Bhp — Brake Horsepower
Watts — Input Watts to Motor
*Motor drive range: 1035 to 1460 rpm. All other rpms require field-supplied drive.
3. See general fan performance notes.
37
Table 31—Fan Performance 581B 060, 581C 060 Three-Phase — Horizontal Discharge Units;
Standard Motor (Belt Drive)*
EXTERNAL STATIC PRESSURE (in. wg)
AIRFLOW
CFM
0.2
Bhp
0.4
Bhp
0.6
0.8
Bhp
1.0
Bhp
Rpm
Watts
Rpm
Watts Rpm
Bhp
Watts
Rpm
Watts
Rpm
Watts
753
829
1500
1600
1700
1800
1900
2000
2100
2200
2300
2400
2500
800
839
879
919
960
1001
1043
1085
1127
1169
1212
0.39
0.46
0.54
0.63
0.73
0.84
0.96
1.09
1.23
1.38
1.55
350
412
483
561
648
744
850
966
904
938
974
0.49
0.57
0.65
0.75
0.85
0.96
1.09
1.22
1.37
1.53
1.70
438
505
580
663
754
855
965
1086
1217
1359
1513
999
1030
1062
1095
1129
1163
1199
1235
1272
1310
1348
0.60
0.68
0.77
0.87
0.98
1.09
1.22
1.36
1.52
1.68
1.86
535
605
684
771
867
1087
1115
1144
1174
1206
1238
1271
1305
1340
1375
1412
0.72
0.80
0.90
1.00
1.11
1.23
1.37
1.51
1.67
1.84
2.02
640
714
796
886
986
1095
1213
1342
1482
1633
1796
1169
1195
1221
1250
1279
1309
1340
1372
1405
1439
1473
0.85
0.93
1.03
1.14
1.25
1.38
1.52
1.67
1.83
2.00
2.19
914
1010
1047
1085
1123
1162
1201
1241
1281
1008
1111
1224
1346
1479
1623
1778
1945
972
1086
1211
1347
1493
1652
1092
1229
1378
EXTERNAL STATIC PRESSURE (in. wg)
1.6
AIRFLOW
CFM
1.2
Bhp
1.4
Bhp
1.8
Bhp
2.0
Bhp
Rpm
Watts
Rpm
Watts Rpm
Bhp
Watts
Rpm
Watts
Rpm
Watts
1500
1600
1700
1800
1900
2000
2100
2200
2300
2400
2500
1247
1270
1295
1321
1348
1377
1406
1437
1468
1500
1533
0.98
1.07
1.17
1.28
1.40
1.53
1.67
1.83
1.99
2.17
2.36
873
952
1320
1342
1365
1390
1415
1442
1470
1499
1529
1559
—
1.13
1.22
1.32
1.43
1.56
1.69
1.83
1.99
2.16
2.35
—
1002
1083
1173
1273
1381
1500
1629
1769
1920
2083
—
1390
1411
1432
1455
1479
1505
1531
1559
1587
—
1.28
1.37
1.48
1.59
1.72
1.86
2.00
2.16
2.34
—
1137
1221
1313
1415
1526
1648
1780
1923
2077
—
1457
1476
1497
1518
1541
1565
1591
1617
—
1.44
1.54
1.64
1.76
1.89
2.03
2.18
2.34
—
1280
1365
1459
1563
1677
1801
1936
2082
—
1522
1540
1559
1579
1601
1624
1648
—
1.61
1.71
1.82
1.93
2.06
2.21
2.36
—
1430
1517
1612
1718
1834
1961
2098
—
1040
1137
1243
1359
1485
1621
1769
1928
2098
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
NOTES:
LEGEND
1. Grey cells indicate field-supplied drive is required.
2. Maximum continuous bhp is 2.40.
Bhp — Brake Horsepower
Watts — Input Watts to Motor
*Motor drive range: 1035 to 1460 rpm. All other rpms require field-supplied drive.
3. See general fan performance notes.
Table 32—Fan Performance 581B 060, 581C 060 — Horizontal Discharge Units; High-Static Motor (Belt Drive)*
EXTERNAL STATIC PRESSURE (in. wg)
AIRFLOW
CFM
0.2
Bhp
0.4
Bhp
0.6
0.8
Bhp
1.0
Bhp
Rpm
Watts
Rpm
Watts Rpm
Bhp
Watts
Rpm
Watts
Rpm
Watts
753
829
1500
1600
1700
1800
1900
2000
2100
2200
2300
2400
2500
800
839
879
919
960
1001
1043
1085
1127
1169
1212
0.39
0.46
0.54
0.63
0.73
0.84
0.96
1.09
1.23
1.38
1.55
350
412
483
561
648
744
850
966
904
938
974
0.49
0.57
0.65
0.75
0.85
0.96
1.09
1.22
1.37
1.53
1.70
438
505
580
663
754
855
965
1086
1217
1359
1513
999
1030
1062
1095
1129
1163
1199
1235
1272
1310
1348
0.60
0.68
0.77
0.87
0.98
1.09
1.22
1.36
1.52
1.68
1.86
535
605
684
771
867
1087
1115
1144
1174
1206
1238
1271
1305
1340
1375
1412
0.72
0.80
0.90
1.00
1.11
1.23
1.37
1.51
1.67
1.84
2.02
640
714
796
886
986
1095
1213
1342
1482
1633
1796
1169
1195
1221
1250
1279
1309
1340
1372
1405
1439
1473
0.85
0.93
1.03
1.14
1.25
1.38
1.52
1.67
1.83
2.00
2.19
914
1010
1047
1085
1123
1162
1201
1241
1281
1008
1111
1224
1346
1479
1623
1778
1945
972
1086
1211
1347
1493
1652
1092
1229
1378
EXTERNAL STATIC PRESSURE (in. wg)
1.6
AIRFLOW
CFM
1.2
Bhp
1.4
Bhp
1.8
Bhp
2.0
Bhp
Rpm
Watts
Rpm
Watts Rpm
Bhp
Watts
Rpm
Watts
Rpm
Watts
1500
1600
1700
1800
1900
2000
2100
2200
2300
2400
2500
1247
1270
1295
1321
1348
1377
1406
1437
1468
1500
1533
0.98
1.07
1.17
1.28
1.40
1.53
1.67
1.83
1.99
2.17
2.36
873
952
1320
1342
1365
1390
1415
1442
1470
1499
1529
1559
1591
1.13
1.22
1.32
1.43
1.56
1.69
1.83
1.99
2.16
2.35
2.54
1002
1083
1173
1273
1381
1500
1629
1769
1920
2083
2257
1390
1411
1432
1455
1479
1505
1531
1559
1587
1616
1647
1.28
1.37
1.48
1.59
1.72
1.86
2.00
2.16
2.34
2.53
2.73
1137
1221
1313
1415
1526
1648
1780
1923
2077
2243
2421
1457
1476
1497
1518
1541
1565
1591
1617
1644
1672
—
1.44
1.54
1.64
1.76
1.89
2.03
2.18
2.34
2.52
2.71
—
1280
1365
1459
1563
1677
1801
1936
2082
2239
2408
—
1522
1540
1559
1579
1601
1624
1648
1673
1699
1726
—
1.61
1.71
1.82
1.93
2.06
2.21
2.36
2.53
2.71
2.90
—
1430
1517
1612
1718
1834
1961
2098
2246
2406
2579
—
1040
1137
1243
1359
1485
1621
1769
1928
2098
NOTES:
LEGEND
1. Grey cells indicate field-supplied drive is required.
2. Maximum continuous bhp is 2.90.
Bhp — Brake Horsepower
Watts — Input Watts to Motor
*Motor drive range: 1300 to 1685 rpm. All other rpms require field-supplied drive.
3. See general fan performance notes.
38
Table 33—Fan Performance 581B 072 — Horizontal Discharge Units; Standard Motor (Belt Drive)*
EXTERNAL STATIC PRESSURE (in. wg)
AIRFLOW
CFM
0.2
Bhp
0.4
Bhp
0.6
0.8
Bhp
1.0
Bhp
Rpm
Watts
Rpm
Watts Rpm
Bhp
Watts
Rpm
Watts
Rpm
Watts
1800
1900
2000
2100
2200
2300
2400
2500
2600
2700
2800
2900
3000
913
952
992
0.64
0.73
0.84
0.95
1.07
1.21
1.36
1.51
1.69
1.87
2.07
2.28
—
569
652
744
844
954
1074
1204
1345
1497
1660
1835
2023
—
1010
1046
1083
1120
1158
1196
1234
1273
1312
1352
1392
—
0.80
0.91
1.02
1.14
1.27
1.41
1.57
1.73
1.91
2.10
2.31
—
715
805
903
1098
1131
1166
1200
1236
1272
1308
1345
1382
1420
—
0.98
1.09
1.21
1.33
1.47
1.62
1.78
1.96
2.14
2.34
—
869
965
1178
1210
1242
1275
1308
1343
1377
1412
1448
—
1.16
1.28
1.40
1.54
1.68
1.84
2.01
2.19
2.38
—
1032
1134
1245
1365
1495
1634
1784
1945
2117
—
1252
1282
1313
1345
1377
1409
1443
—
—
—
—
—
1.35
1.48
1.61
1.75
1.90
2.07
2.24
—
—
—
—
—
1203
1311
1427
1553
1689
1834
1990
—
—
—
—
—
1070
1184
1307
1440
1584
1738
1904
2081
—
1032
1073
1114
1155
1196
1238
1280
1322
1364
—
1010
1127
1254
1391
1538
1697
1867
2050
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
EXTERNAL STATIC PRESSURE (in. wg)
1.6
AIRFLOW
CFM
1.2
Bhp
1.4
Bhp
1.8
Bhp
2.0
Bhp
Rpm
Watts
Rpm
Watts Rpm
Bhp
Watts
Rpm
Watts
Rpm
Watts
1800
1900
2000
2100
2200
2300
2400
2500
2600
2700
2800
2900
3000
1322
1351
1380
1411
1441
1473
—
—
—
—
—
1.56
1.68
1.82
1.97
2.13
2.30
—
—
—
—
—
1382
1495
1617
1748
1890
2041
—
—
—
—
—
1388
1416
1444
1473
1503
—
—
—
—
—
1.77
1.90
2.04
2.20
2.36
—
—
—
—
—
1568
1686
1814
1950
2097
—
—
—
—
—
1451
1477
1505
—
—
—
—
—
—
—
1.98
2.12
2.27
—
—
—
—
—
—
—
1762
1885
2017
—
—
—
—
—
—
—
1510
1536
—
—
—
—
—
—
—
—
—
—
—
2.21
2.35
—
—
—
—
—
—
—
—
—
—
—
1962
2090
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
NOTES:
LEGEND
1. Grey cells indicate field-supplied drive is required.
2. Maximum continuous bhp is 2.40.
Bhp — Brake Horsepower
Watts — Input Watts to Motor
*Motor drive range: 1119 to 1585 rpm. All other rpms require field-supplied drive.
3. See general fan performance notes.
39
Table 34—Fan Performance 581B 072 — Horizontal Discharge Units; High-Static Motor (Belt Drive)*
EXTERNAL STATIC PRESSURE (in. wg)
AIRFLOW
CFM
0.2
Bhp
0.4
Bhp
0.6
0.8
Bhp
1.0
Bhp
Rpm
Watts
Rpm
Watts Rpm
Bhp
Watts
Rpm
Watts
Rpm
Watts
1800
1900
2000
2100
2200
2300
2400
2500
2600
2700
2800
2900
3000
913
952
992
0.64
0.73
0.84
0.95
1.07
1.21
1.36
1.51
1.69
1.87
2.07
2.28
2.50
569
652
744
844
954
1074
1204
1345
1497
1660
1835
2023
2224
1010
1046
1083
1120
1158
1196
1234
1273
1312
1352
1392
1432
1472
0.80
0.91
1.02
1.14
1.27
1.41
1.57
1.73
1.91
2.10
2.31
2.53
2.76
715
805
903
1098
1131
1166
1200
1236
1272
1308
1345
1382
1420
1458
1496
—
0.98
1.09
1.21
1.33
1.47
1.62
1.78
1.96
2.14
2.34
2.56
2.78
—
869
965
1178
1210
1242
1275
1308
1343
1377
1412
1448
1484
1521
—
1.16
1.28
1.40
1.54
1.68
1.84
2.01
2.19
2.38
2.59
2.81
—
1032
1134
1245
1365
1495
1634
1784
1945
2117
2300
2496
—
1252
1282
1313
1345
1377
1409
1443
1477
1511
1546
—
1.35
1.48
1.61
1.75
1.90
2.07
2.24
2.43
2.63
2.84
—
1203
1311
1427
1553
1689
1834
1990
2157
2335
2526
—
1070
1184
1307
1440
1584
1738
1904
2081
2270
2472
—
1032
1073
1114
1155
1196
1238
1280
1322
1364
1406
1010
1127
1254
1391
1538
1697
1867
2050
2245
2452
—
—
—
—
—
—
—
—
—
EXTERNAL STATIC PRESSURE (in. wg)
1.6
AIRFLOW
CFM
1.2
Bhp
1.4
Bhp
1.8
Bhp
2.0
Bhp
Rpm
Watts
Rpm
Watts Rpm
Bhp
Watts
Rpm
Watts
Rpm
Watts
1800
1900
2000
2100
2200
2300
2400
2500
2600
2700
2800
2900
3000
1322
1351
1380
1411
1441
1473
1505
1537
1571
—
1.56
1.68
1.82
1.97
2.13
2.30
2.48
2.68
2.88
—
1382
1495
1617
1748
1890
2041
2203
2376
2560
—
1388
1416
1444
1473
1503
1533
1564
—
—
—
—
—
1.77
1.90
2.04
2.20
2.36
2.54
2.73
—
—
—
—
—
1568
1686
1814
1950
2097
2254
2422
—
—
—
—
—
1451
1477
1505
1533
1562
1591
—
—
—
—
—
1.98
2.12
2.27
2.43
2.60
2.79
—
—
—
—
—
1762
1885
2017
2159
2311
2474
—
—
—
—
—
1510
1536
1563
1590
1618
—
—
—
—
—
2.21
2.35
2.51
2.67
2.85
—
—
—
—
—
1962
2090
2227
2374
2532
—
—
—
—
—
1568
1593
1619
—
—
—
—
—
—
—
2.44
2.59
2.75
—
—
—
—
—
—
—
2169
2302
2443
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
NOTES:
LEGEND
1. Grey cells indicate field-supplied drive is required.
2. Maximum continuous bhp is 2.90.
Bhp — Brake Horsepower
Watts — Input Watts to Motor
*Motor drive range: 1300 to 1685 rpm. All other rpms require field-supplied drive.
3. See general fan performance notes.
40
c. Make sure that condensate drain trap is filled with water
to ensure proper drainage.
PRE-START-UP
d. Make sure that all tools and miscellaneous loose parts
have been removed.
!
WARNING
START-UP
FIRE, EXPLOSION, ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal
injury, death and/or property damage:
Unit Preparation
Make sure that the unit has been installed in accordance with
installation instructions and applicable codes.
1. Follow recognized safety practices and wear
protective goggles when checking or servicing a
refrigerant system.
2. Do not operate the compressor or provide any
electric power to the unit unless the compressor terminal
cover is in place and secured.
3. Do not remove the compressor terminal cover until
all electrical sources are disconnected and tagged with
lockout tags.
4. Relieve all pressure from the system before touching
or disturbing anything inside the terminal box if a
refrigerant leak is suspected around the compressor
terminals. Use accepted methods to recover the
refrigerant.
5. Never attempt to repair a soldered connection while
the refrigerant system is under pressure.
6. Do not use a torch to remove any component. The
system contains oil and refrigerant under pressure. To
remove a component, wear protective goggles and
proceed as follows:
Gas Piping
Check gas piping for leaks.
!
WARNING
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could cause personal
injury or death.
Disconnect gas piping from unit when leak testing at
pressure greater than / psig. Pressures greater than /
psig will cause gas valve damage resulting in hazardous
1
1
2
2
condition. If gas valve is subjected to pressure greater
1
than
/
2
psig, it must be replaced before use. When
pressure testing field-supplied gas piping at pressures of
/ psig or less, a unit connected to such piping must be
isolated by manually closing the gas valve.
1
2
a. Shut off electrical power to the unit and tag
disconnect.
b. Recover refrigerant to relieve all pressure
from the system using both high-pressure
and low-pressure ports.
c. Cut component connection tubing with a
tubing cutter, and remove the component
from the unit.
Return--Air Filters
Make sure the correct filters are installed in the unit (See Table 1
or 2). Do not operate the unit without return-air filters.
Outdoor--Air Inlet Screens
Outdoor-air inlet screen(s) must be in place before operating the
unit.
d. Carefully unsweat the remaining tubing
stubs when necessary. Oil can ignite when
exposed to a torch flame.
Compressor Mounting
Compressors are internally spring mounted. Do not loosen or
remove the compressor holddown bolts.
Internal Wiring
Check all electrical connections in unit control boxes; tighten
them as required.
Proceed as follows to inspect and prepare the unit for initial
start-up:
1. Remove all access panels.
Refrigerant Service Ports
2. Read and follow instructions on all WARNING,
CAUTION, and INFORMATION labels attached to, or
shipped with, unit.
Each unit system has 4 Schrader--type service ports: one on the
suction line, one on the liquid line, and 2 on the compressor
discharge line. Be sure that caps on the ports are tight. Two
additional Schrader valves are located under the high--pressure
and low--pressure switches, respectively.
3. Make the following inspections:
a. Inspect for shipping and handling damages such as
broken lines, loose parts, or disconnected wires, etc.
High Flow Refrigerant Valves
b. Inspect for oil at all refrigerant tubing connections and on
unit base. Detecting oil generally indicates a refrigerant
leak. Leak-test all refrigerant tubing connections using
electronic leak detector, halide torch, or liquid-soap
solution.
Two high flow valves are located on the hot gas tube coming out
of the compressor and the suction tube going into the compressor.
Large black plastic caps identify these valves. These valves have
O--rings inside which screw the cap onto a brass body to prevent
leaks. No field access to these valves is available at this time.
Ensure the plastic caps remain on the valves and are tight or the
possibility of refrigerant leakage could occur.
c. Inspect all field-wiring and factory-wiring connections.
Be sure that connections are completed and tight. Be sure
that wires are not in contact with refrigerant tubing or
sharp edges.
d. Inspect coil fins. If damaged during shipping and
handling, carefully straighten fins with a fin comb.
4. Verify the following conditions:
a. Make sure that condenser-fan blade are correctly
positioned in fan orifice. See Condenser-Fan Adjustment
section for more details.
b. Make sure that air filter(s) is in place.
41
Table 35—Altitude Compensation*
581B 036--072, 581C 024--060 Standard Units
Compressor Rotation
On 3-phase units be certain that the compressor is rotating in the
proper direction. To determine whether or not compressor is
rotating in the proper direction:
72,000 AND
150,000 BTUH
115,000 BTUH
NOMINAL INPUT
NOMINAL INPUT
1. Connect the service gauges to suction and discharge
pressure fittings.
ELEVATION
(ft)
Natural
Liquid
Propane
Orifice
Size†
Natural
Liquid
Propane
Orifice
Size†
Gas
Gas
2. Energize the compressor.
3. The suction pressure should drop and the discharge
pressure should rise, as is normal on any start-up.
Orifice
Size†
Orifice
Size†
0-2,000
2,000
3,000
4,000
5,000
6,000
7,000
8,000
9,000
10,000
11,000
12,000
13,000
14,000
33
36
36
37
38
40
41
42
43
44
45
46
47
48
43
44
45
45
46
47
48
49
50
50
51
52
52
53
30
31
31
32
32
34
35
36
37
39
41
42
43
44
37
39
40
41
42
43
43
44
45
46
47
48
49
50
If the suction pressure does not drop and the discharge pressure
does not rise to normal levels:
1. Note that the indoor fan (006 and 007 three-phase units
only) is probably also rotating in the wrong direction.
2. Turn off power to the unit and tag disconnect.
3. Reverse any two of the unit power leads.
4. Turn on power to the unit and energize the compressor.
The suction and discharge pressure levels should now move to
their normal start-up levels.
NOTE: When the compressor is rotating in the wrong direction,
the unit makes more noise and does not provide cooling.
*As the height above sea level increases, there is less oxygen per cubic
foot of air. Therefore, heat input rate should be reduced at higher alti-
tudes.
Cooling
Set the space thermostat to the OFF position. Set the system
selector switch at COOL position and the fan switch at AUTO
position. Adjust the thermostat to a setting below room
temperature. The compressor starts when contactor closes.
†Orifices available through your Bryant distributor.
Table 36—Altitude Compensation* —
581B 036--072, 581C 024--060 Low NOx Units
Check the unit charge. Refer to Refrigerant Charge section.
Reset the thermostat at a position above room temperature. The
compressor will shut off. Evaporator fan will shut off after a
30--second delay.
60,000 AND
120,000 BTUH
90,000 BTUH
NOMINAL INPUT
NOMINAL INPUT
ELEVATION
Natural
Liquid
Propane
Orifice
Size†
Natural
Liquid
Propane
Orifice
Size†
To Shut Off Unit -- Set the system selector switch at OFF
position. Resetting the thermostat at a position above room
temperature shuts off the unit temporarily until the space
temperature exceeds the thermostat setting. Units are equipped
with a Cycle-LOC™ protection device. The unit shuts down on
any safety trip and remains off; an indicator light on the
thermostat comes on. Check the reason for the safety trip.
(ft)
Gas
Gas
Orifice
Size†
Orifice
Size
0-2,000
2,000
3,000
4,000
5,000
6,000
7,000
8,000
9,000
10,000
11,000
12,000
13,000
14,000
38
40
41
42
43
43
44
45
46
47
48
49
50
51
45
47
48
49
49
50
50
51
52
52
53
53
54
54
32
33
35
36
37
38
39
41
42
43
44
44
46
47
42
43
43
44
45
45
46
47
48
49
50
51
52
52
Main Burners
Main burners are factory set and should require no adjustment.
TO CHECK ignition of main burners and heating controls, move
thermostat set point above room temperature and verify that the
burners light and evaporator fan is energized. Check heating
effect, then lower the thermostat setting below the room
temperature and verify that the burners and evaporator fan turn
off.
Refer to Tables 35 and 36 for the correct orifice to use at high
altitudes.
*As the height above sea level increases, there is less oxygen per cubic
foot of air. Therefore, the input rate should be reduced at higher alti-
tudes.
†Orifices are available through your local Bryant distributor.
42
Heating
Operating Sequence
1. Purge gas supply line of air by opening union ahead of the
Cooling -- Units Without Economizer
gas valve. If gas odor is detected, tighten union and wait 5
minutes before proceeding.
When thermostat calls for cooling, terminals G and Y1 are
energized. The indoor-fan contactor (IFC), reversing valve
solenoid (RVS) and compressor contactor are energized and
indoor-fan motor, compressor, and outdoor fan starts. The
outdoor fan motor runs continuously while unit is cooling.
2. Turn on electrical supply and manual gas valve.
3. Set system switch selector at HEAT position and fan
switch at AUTO or ON position. Set heating temperature
lever above room temperature.
Heating -- Units Without Economizer
4. The induced-draft motor will start.
When the thermostat calls for heating, terminal W1 is energized.
To prevent thermostat short--cycling, the unit is locked into the
Heating mode for at least 1 minute when W1 is energized. The
induced--draft motor is energized and the burner ignition
sequence begins. The indoor (evaporator) fan motor (IFM) is
energized 45 seconds after a flame is ignited. On units equipped
for two stages of heat, when additional heat is needed, W2 is
energized and the high--fire solenoid on the main gas valve
(MGV) is energized. When the thermostat is satisfied and W1 is
deenergized, the IFM stops after a 45--second time--off delay.
5. After a call for heating, the main burners should light
within 5 seconds. If the burner does not light, then there is
a 22-second delay before another 5-second try. If the
burner still does not light, the time delay is repeated. If the
burner does not light within 15 minutes, there is a lockout.
To reset the control, break the 24 v power to W1.
6. The evaporator-fan motor will turn on 45 seconds after
burner ignition.
7. The evaporator-fan motor will turn off in 45 seconds after
the thermostat temperature is satisfied.
Cooling -- Units With Economi$er IV
When free cooling is not available, the compressors will be
controlled by the zone thermostat. When free cooling is available,
the outdoor-air damper is modulated by the EconoMi$er IV
control to provide a 50_ to 55_F supply-air temperature into the
zone. As the supply-air temperature fluctuates above 55_ or
below 50_F, the dampers will be modulated (open or close) to
bring the supply-air temperature back within the set point limits.
Integrated EconoMi$er IV operation on single-stage units
requires a 2-stage thermostat (Y1 and Y2).
For EconoMi$er IV operation, there must be a thermostat call for
the fan (G). This will move the damper to its minimum position
during the occupied mode.
If the increase in cooling capacity causes the supply--air
temperature to drop below 45_F, then the outdoor--air damper
position will be fully closed. If the supply--air temperature
continues to fall, the outdoor--air damper will close. Control
returns to normal once the supply--air temperature rises above
48_F.
8. Adjust airflow to obtain a temperature rise within the
range specified on the unit nameplate.
NOTE: The default value for the evaporator-fan motor on/off
delay is 45 seconds. The Integrated Gas Unit Controller (IGC)
modifies this value when abnormal limit switch cycles occur.
Based upon unit operating conditions, the on delay can be
reduced to 0 seconds and the off delay can be extended to
180
seconds. When one flash of the LED (light-emitting diode) is
observed, the evaporator-fan on/off delay has been modified.
If the limit switch trips at the start of the heating cycle during the
evaporator on delay, the time period of the on delay for the next
cycle will be 5 seconds less than the time at which the switch
tripped. (Example: If the limit switch trips at 30 seconds, the
evaporator-fan on delay for the next cycle will occur at 25
seconds.) To prevent short-cycling, a 5-second reduction will
only occur if a minimum of 10 minutes has elapsed since the last
call for heating.
The evaporator-fan off delay can also be modified. Once the call
for heating has ended, there is a 10-minute period during which
the modification can occur. If the limit switch trips during this
period, the evaporator-fan off delay will increase by 15 seconds.
A maximum of 9 trips can occur, extending the evaporator-fan off
delay to 180 seconds.
If optional power exhaust is installed, as the outdoor--air damper
opens and closes, the power exhaust fans will be energized and
deenergized.
If field--installed accessory CO sensors are connected to the
2
EconoMi$er IV control, a demand controlled ventilation strategy
will begin to operate. As the CO level in the zone increases
2
To restore the original default value, reset the power to the unit.
above the CO set point, the minimum position of the damper
2
To Shut Off Unit —Set system selector switch at off position.
Resetting heating selector lever below room temperature will
temporarily shut unit off until space temperature falls below
thermostat setting.
will be increased proportionally. As the CO level decreases
2
because of the increase in fresh air, the outdoor--air damper will
be proportionally closed. Damper position will follow the higher
demand condition from DCV mode or free cooling mode.
Safety Relief
A soft solder joint at the suction line fitting provides pressure
relief under abnormal temperature and pressure conditions.
Damper movement from full closed to full open (or vice versa)
will take between 1--1/2 and 2--1/2 minutes.
If free cooling can be used as determined from the appropriate
changeover command (switch, dry bulb, enthalpy curve,
differential dry bulb, or differential enthalpy), a call for cooling
(Y1 closes at the thermostat) will cause the control to modulate
the dampers open to maintain the supply air temperature set point
at 50_ to 55_F.
Ventilation (Continuous Fan)
Set fan and system selector switches at ON and OFF positions,
respectively. Evaporator fan operates continuously to provide
constant air circulation. When the evaporator--fan selector switch
is turned to the OFF position, there is a 30--second delay before
the fan turns off.
As the supply air temperature drops below the set point range of
50_ to 55_F, the control will modulate the outdoor--air dampers
closed to maintain the proper supply--air temperature.
43
Heating -- Units With Economi$er IV
When the room temperature calls for heat, the heating controls are
energized as described in the Heating, Units Without Economizer
section. During the occupied mode, whenever the indoor fan
contactor is energized, the economizer damper moves to the
minimum position.
Units With Perfect Humidity™ Adaptive
Dehumidification System
Normal Design Operation
When the rooftop operates under the normal sequence of
operation, the compressors will cycle to maintain indoor
conditions. (See Fig. 44.)
The Perfect Humidity adaptive dehumidification system includes
a factory-installed Motormaster® low ambient control to keep the
head and suction pressure high, allowing normal design cooling
mode operation down to 0°F.
Subcooling Mode
C06135
C06136
C06137
Fig. 44 --- Perfect Humidityt Normal
When subcooling mode is initiated, this will energize (close) the
liquid line solenoid valve (LLSV) forcing the hot liquid
refrigerant to enter into the subcooling coil. (See Fig. 45.)
Design Cooling Operation
As the hot liquid refrigerant passes through the subcooling/ reheat
dehumidification coil, it is exposed to the cold supply airflow
coming through the evaporator coil. The liquid is further
subcooled to
a
temperature approaching the evaporator
leaving-air temperature. The liquid then enters a thermostatic
expansion valve (TXV) where the liquid drops to a lower
pressure. The TXV does not have a pressure drop great enough to
change the liquid to a 2-phase fluid, so the liquid then enters the
Acutrol™ device at the evaporator coil.
The liquid enters the evaporator coil at a temperature lower than
in standard cooling operation. This lower temperature increases
the latent capacity of the rooftop unit. The refrigerant passes
through the evaporator and is turned into a vapor. The air passing
over the evaporator coil will become colder than during normal
operation. However, as this same air passes over the subcooling
coil, it will be slightly warmed, partially reheating the air.
Subcooling mode operates only when the outside air
temperature is warmer than 40_F. A factory-installed temperature
switch located in the condenser section will lock out subcooling
mode when the outside temperature is cooler than 40_F.
The scroll compressors are equipped with crankcase heaters to
provide protection for the compressors due to the additional
refrigerant charge required by the subcooling/reheat coil.
Fig. 45 --- Perfect Humidity Subcooling
Mode Operation
When in subcooling mode, there is a slight decrease in system
total gross capacity (5% less), a lower gross sensible capacity
(20% less), and a greatly increased latent capacity (up to 40%
more).
Hot Gas Reheat Mode
When the humidity levels in the space require humidity control, a
hot gas solenoid valve (specific to hot gas reheat mode only) will
open to bypass a portion of hot gas refrigerant around the
condenser coil. (See Fig. 46.)
This hot gas will mix with liquid refrigerant leaving the
condenser coil and flow to the subcooling/reheat
dehumidification coil. Now the conditioned air coming off the
evaporator will be cooled and dehumidified, but will be warmed
to neutral conditions (72_F to 75_F) by the subcooling/reheat
dehumidification coil.
Fig. 46 --- Perfect Humidity Hot Gas
Reheat Mode Operation
See Table 37 for the Perfect Humidity adaptive dehumidification
system sequence of operation.
44
Table 37—Perfect Humidity Adaptive Dehumidification System Sequence of Operation and
System Response — Single Compressor Unit (581C 024--060, 581B 036--072)
THERMOSTAT INPUT
ECONOMIZER FUNCTION
581B,C UNIT OPERATION
H
Y1
Y2
OAT. < Economizer Set Point
Economizer
Comp. 1
Subcooling Mode
Hot Gas Reheat Mode
Normal Operation
Off
—
—
On
On
On
On
On
On
On
On
On
Off
On
Off
On
Off
Off
No
No
Yes
Yes
No
Off
Off
On
On
Off
On
On
On
On
On
Yes
Yes
Yes
No
No
No
No
Yes
Yes
No
NOTE: On a thermostat call for W1, all cooling and dehumidification will be off.
LEGEND
OAT --- Outdoor Air Temperature
The net effect of the rooftop when in hot gas reheat mode is to
provide nearly all latent capacity removal from the space when
sensible loads diminish (when outdoor temperature conditions are
moderate). When in hot gas reheat mode, the unit will operate to
provide mostly latent capacity and extremely low sensible heat
ratio capability.
One--Row Coils
Wash coil with commercial coil cleaner. It is not necessary to
remove top panel.
2-Row Coils
Clean coil as follows:
1. Turn off unit power, tag disconnect.
2. Remove top panel screws on condenser end of unit.
Similar to the subcooling mode of operation, hot gas reheat mode
operates only when the outside air temperature is warmer than
40_F. Below this temperature, a factory installed outside air
temperature switch will lockout this mode of operation.
3. Remove condenser coil corner post. (See Fig. 47.) To hold
top panel open, place coil corner post between top panel
and center post. (See Fig. 48.)
SERVICE
!
WARNING
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could cause personal
injury or death.
When sevicing unit, shut off all electrical power to unit
and install lockout tag.
Step 1 —Cleaning
Inspect unit interior at the beginning of heating and cooling
season and as operating conditions require.
Evaporator Coil
1. Turn unit power off, tag disconnect. Remove evaporator
coil access panel.
2. If economizer or two-position damper is installed, remove
economizer by disconnecting Molex plug and
removing mounting screws.
C06044
Fig. 47 --- Cleaning Condenser Coil
3. Slide filters out of unit.
4. Clean coil using a commercial coil cleaner or dishwasher
detergent in a pressurized spray canister. Wash both sides
of coil and flush with clean water. For best results,
back-flush toward return-air section to remove foreign
material. Flush condensate pan after completion.
5. Reinstall economizer and filters.
6. Reconnect wiring.
7. Replace access panels.
Condenser Coil
Inspect coil monthly. Clean condenser coil annually, and as
required by location and outdoor air conditions.
C06045
Fig. 48 --- Propping Up Top Panel
45
UNIT
FAN HEIGHT (in.) - A
024-060 and 072 (208/230 v)
072 (460 v)
2.75
3.50
C06138
Fig. 50 --- Condenser--Fan Adjustment
Step 4 —EconoMi$er IV Adjustment
Refer to Optional EconoMi$er IV section.
Step 5 —Evaporator Fan Belt Inspection
Check condition of evaporator belt or tension during heating and
cooling inspections or as conditions require. Replace belt or
adjust as necessary.
C06046
Fig. 49 --- Separating Coil Sections
4. Remove screws securing coil to compressor plate and
compressor access panel.
Step 6 —High Pressure Switch
The high-pressure switch contains a Schrader core depressor, and
is located on the compressor hot gas line. This switch opens at
428 psig and closes at 320 psig. No adjustments are necessary.
5. Remove fastener holding coil sections together at return
end of condenser coil. Carefully separate the outer coil
section 3 to 4 in. from the inner coil section. (See Fig. 49.)
6. Use a water hose or other suitable equipment to flush
down between the 2 coil sections to remove dirt and
debris. Clean the outer surfaces with a stiff brush in the
normal manner.
Step 7 —Loss--of--Charge Switch
The loss-of-charge switch contains a Schrader core depressor, and
is located on the compressor liquid line. This switch opens at 7
psig and closes at 22 psig. No adjustments are necessary.
7. Secure inner and outer coil rows together with
field-supplied fastener.
a
Step 8 —Freeze--Stat
8. Reposition the outer coil section and remove the coil
corner post from between the top panel and center post.
Reinstall the coil corner post and replace all screws.
The freeze-stat is a bimetal temperature-sensing switch that is
located on the “hair-pin” end of the evaporator coil. The switch
protects the evaporator coil from freeze-up due to lack of airflow.
The switch opens at 30_F and closes at 45_F. No adjustments are
necessary.
Condensate Drain
Check and clean each year at the start of the cooling season. In
winter, keep the drain dry or protect it against freeze-up.
Filters
Step 9 —Refrigerant Charge
Amount of refrigerant charge is listed on unit nameplate (also
refer to Table 1). Refer to HVAC Servicing Procedures literature
available at your local distributor and the following procedures.
Unit panels must be in place when unit is operating during
charging procedure. Unit must operate a minimum of 10 minutes
before checking or adjusting refrigerant charge.
An accurate superheat, thermocouple-type or thermistor-type
thermometer, and a gauge manifold are required when using the
superheat charging method for evaluating the unit charge. Do not
use mercury or small dial-type thermometers because they are not
adequate for this type of measurement.
Clean or replace at the start of each heating and cooling season, or
more often if operating conditions require it. Replacement filters
must be the same dimensions as the original filters.
Outdoor--Air Inlet Screens
Clean the screens with steam or hot water and a mild detergent.
Do not use disposable filters in place of screens.
Step 2 —Lubrication
Compressor
The compressor is charged with the correct amount of oil at the
factory.
No Charge
Fan Motor Bearings
Use standard evacuating techniques. After evacuating system to
500 microns, weigh in the specified amount of refrigerant. (Refer
to Table 1 or 2 and unit information plate.)
Fan motor bearings are permanently lubricated. No further
lubrication is required. No lubrication of condenser-fan or
evaporator-fan motors is required.
Step 3 —Condenser--Fan Adjustment
Shut off unit power supply. Remove condenser-fan assembly
(grille, motor, motor cover, and fan) and loosen fan hub
setscrews. Adjust fan height as shown in Fig. 50. Tighten
setscrews and replace condenser-fan assembly.
46
Low Charge Cooling
Using Cooling Charging Charts, Fig. 51--54 and 59--62, vary
refrigerant until the conditions of the charts are met. Note the
charging charts are different from type normally used. Charts are
based on charging the units to the correct superheat for the
various operating conditions. Accurate pressure gauge and
temperature sensing device are required. Connect the pressure
gauge to the service port on the suction line. Mount the
temperature sensing device on the suction line and insulate it so
that outdoor ambient temperature does not affect the reading.
Indoor-air cfm must be within the normal operating range of the
unit.
Perfect Humidity™ System Charging
The system charge for units with the Perfect Humidity adaptive
dehumidification system is greater than that of the standard unit
alone. The charge for units with this option is indicated on the
unit nameplate drawing. Also refer to Fig. 55--58. To charge
systems using the Perfect Humidity adaptive dehumidification
system, fully evacuate, recover, and recharge the system to the
nameplate specified charge level. To check or adjust refrigerant
charge on systems using the Perfect Humidity adaptive
dehumidification system, charge per Fig. 55--58.
C06140
Fig. 52 --- Cooling Charging Chart,
Standard 581B 048
C06139
Fig. 51 --- Cooling Charging Chart,
Standard 581B 036
C06141
Fig. 53 --- Cooling Charging Chart,
Standard 581B 060
47
C06142
Fig. 54 --- Cooling Charging Chart,
Standard 581B 072
C06144
Fig. 56 --- Cooling Charging Chart, 581B 048 with
Optional Perfect Humidity Adaptive Dehumidification
System
NOTE: When using the charging charts, it is important that only
the subcooling/reheat dehumidification coil liquid line solenoid
valve be energized. The subcooling/reheat dehumidification coil
liquid line solenoid valve MUST be energized to use the charging
charts and the outdoor motor speed controller jumpered to run the
fan at full speed.
The charts reference a liquid pressure (psig) and temperature at a
point between the condenser coil and the subcooling/reheat
dehumidification coil. A tap is provided on the unit to measure
liquid pressure entering the subcooling/reheat dehumidification
coil.
IMPORTANT: The subcooling mode charging charts (Fig.
55--58) are to be used ONLY with units having the Perfect
Humidity adaptive dehumidification system. DO NOT use
standard charge (Fig. 51--54 and 59--62) for units with Perfect
Humidity system, and DO NOT use Fig. 55--58 for standard
units.
C06143
Fig. 55 --- Cooling Charging Chart, 581B 036 with
Optional Perfect Humidity Adaptive Dehumidification
System
48
To Use Cooling Charging Chart, Standard Unit
Take the outdoor ambient temperature and read the suction
pressure gauge. Refer to charts to determine what suction
temperature should be. If suction temperature is high, add
refrigerant. If suction temperature is low, carefully recover some
of the charge. Recheck the suction pressure as charge is adjusted.
Example (Fig. 52):
Outdoor Temperature . . . . . . . . . . . . . . . . . . . . . . . . . 75°F
Suction Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . 70 psig
Suction Temperature should be . . . . . . . . . . . . . . . . . . 48°F
(Suction temperature may vary ± 5°F.)
If a charging device is used, temperature and pressure readings
must be accomplished using the charging charts.
To Use Cooling Charging Charts, Units With Perfect
Humidityt Adaptive Dehumidification System
Refer to charts (Fig. 55--58) to determine the proper leaving
condenser pressure and temperature.
Example (Fig. 55):
Leaving Condenser Pressure . . . . . . . . . . . . . . . . . 250 psig
Leaving Condenser Temperature . . . . . . . . . . . . . . . 105°F
C06145
Fig. 57 --- Cooling Charging Chart, 581B 048 with
NOTE: When using the charging charts, it is important that only
the subcooling/reheat dehumidification coil liquid line solenoid
valve be energized. The subcooling/reheat dehumidification coil
liquid line solenoid valve MUST be energized to use the charging
charts and the outdoor motor speed controller jumpered to run the
fan at full speed.
Optional Perfect Humidity Adaptive Dehumidification
System
Step 10 —Flue Gas Passageways
To inspect the flue collector box and upper areas of the heat
exchanger:
1. Remove the combustion blower wheel and motor
assembly according to directions in Combustion-Air
Blower section below.
2. Remove the 3 screws holding the blower housing to the
flue cover.
3. Remove the flue cover to inspect the heat exchanger.
4. Clean all surfaces as required using a wire brush.
C06146
Fig. 58 --- Cooling Charging Chart, 581B 072 with
Optional Perfect Humidity Adaptive Dehumidification
System
49
F
C
581C - 2 TON CHARGING CHART
Suction Line Temperature (deg C)
125 52
115 46
105 41
95
85
75
35
29
24
5.5
10.5
15.5
20.5
25.5
105.0
100.0
95.0
90.0
85.0
80.0
75.0
70.0
65.0
698.0
648.0
598.0
548.0
498.0
448.0
42
52
62
72
Suction Line Temp (deg F)
C06148
Fig. 59 --- Cooling Charging Chart,
Standard 581C 024
F
C
581C -- 3 TON CHARGING CHART
115 46
105 41
95
85
75
35
29
24
Suction Line Temperature (deg C)
6.1
11.1
16.1
21.1
95.0
85.0
75.0
65.0
648.2
598.2
548.2
498.2
448.2
43
48
53
58
63
68
73
78
Suction Line Temp (deg F)
C06149
Fig. 60 --- Cooling Charging Chart,
Standard 581C 036
50
F
C
115 46
105 41
581C -- 4 TON CHARGING CHART
95
85
75
35
29
24
Suction Line Temperature (deg C)
5.6
10.6
15.6
20.6
25.6
692.0
642.0
592.0
542.0
492.0
97.0
87.0
77.0
67.0
42
47
52
57
62
67
72
77
Suction Line Temp (deg F)
C06150
Fig. 61 --- Cooling Charging Chart,
Standard 581C 048
F
C
581C -- 5 TON CHARGING CHART
115 46
105 41
95
85
75
35
29
24
Suction Line Temperature (deg C)
0.0
5.0
10.0
15.0
20.0
25.0
810.0
710.0
610.0
510.0
410.0
310.0
115.0
105.0
95.0
85.0
75.0
65.0
55.0
42
47
52
57
62
67
72
77
Suction Line Temp (deg F)
C06151
Fig. 62 --- Cooling Charging Chart,
Standard 581C 060
51
Step 11 —Combustion--Air Blower
Step 14 —Main Burners
At the beginning of each heating season, inspect for deterioration
or blockage due to corrosion or other causes. Observe the main
burner flames and adjust, if necessary.
Clean periodically to ensure proper airflow and heating
efficiency. Inspect blower wheel every fall and periodically
during heating season. For the first heating season, inspect blower
wheel bimonthly to determine proper cleaning frequency.
To inspect blower wheel, remove draft hood and screen. Shine a
flashlight into opening to inspect wheel. If cleaning is required,
remove motor and wheel as follows:
!
CAUTION
FURNACE DAMAGE HAZARD
1. Slide burner access panel out.
Failure to follow this caution may result in reduced furnace
life.
2. Remove the 5 screws that attach induced-draft motor
assembly to the vestibule cover.
When servicing gas train, do not hit or plug orifice spuds.
3. Slide the motor and blower wheel assembly out of the
blower housing. The blower wheel can be cleaned at this
point. If additional cleaning is required, continue with
Steps 4 and 5.
4. To remove blower from the motor shaft, remove
2 setscrews.
5. To remove motor, remove the 4 screws that hold the
motor to mounting plate. Remove the motor cooling fan
by removing one setscrew. Then remove nuts that hold
motor to mounting plate.
Removal and Replacement of Gas Train
(See Fig. 63 and 64)
1. Shut off manual gas valve.
2. Shut off power to unit, tag disconnect.
3. Remove compressor access panel.
4. Slide out burner compartment side panel.
5. Disconnect gas piping at unit gas valve.
6. Remove wires connected to gas valve. Mark each wire.
6. To reinstall, reverse the procedure outlined above.
7. Remove induced-draft motor, igniter, and sensor wires at
the Integrated Gas Unit Controller (IGC).
Step 12 —Limit Switch
Remove blower access panel (Fig. 8). Limit switch is located on
the fan deck.
8. Remove the 2 screws that attach the burner rack to the
vestibule plate.
9. Remove the gas valve bracket.
Step 13 —Burner Ignition
10. Slide the burner tray out of the unit (Fig. 64).
11. To reinstall, reverse the procedure outlined above.
12. Reinstall burners on rack.
Unit is equipped with a direct spark ignition 100% lockout
system. Integrated Gas Unit Controller (IGC) is located in the
control box (Fig. 13). A single LED on the IGC provides a visual
display of operational or sequential problems when the power
supply is uninterrupted. The LED can be observed through the
viewport. When a break in power occurs, the IGC will be reset
(resulting in a loss of fault history) and the evaporator fan on/off
times delay will be reset. During servicing, refer to the label on
the control box cover or Table 39 for an explanation of LED error
code descriptions.
INDUCED-
DRAFT
MOTOR
ROLLOUT
SWITCH
MOUNTING
PLATE
If lockout occurs, unit may be reset by interrupting power supply
to unit for at least 5 seconds.
BURNER
SECTION
FLUE
EXHAUST
Table 38—LED Error Code Description*
VESTIBULE
PLATE
LED INDICATION
ON
ERROR CODE DESCRIPTION
Normal Operation
Hardware Failure
Evaporator Fan On/Off Delay Modified
Limit Switch Fault
Flame Sense Fault
4 Consecutive Limit Switch Faults
Ignition Lockout Fault
Induced-Draft Motor Fault
Rollout Switch Fault
Internal Control Fault
Software Lockout
INDUCED-
DRAFT
BLOWER
HOUSING
MOTOR
OFF
1 Flash†
MANIFOLD
PRESSURE
TAP
GAS
VALVE
2 Flashes
3 Flashes
4 Flashes
5 Flashes
6 Flashes
7 Flashes
8 Flashes
9 Flashes
C06152
Fig. 63 --- Burner Section Details
LEGEND
LED — Light-Emitting Diode
*A 3-second pause exists between LED error code flashes. If more than
one error code exists, all applicable codes will be displayed in numeri-
cal sequence.
†Indicates a code that is not an error. The unit will continue to operate
when this code is displayed.
IMPORTANT: Refer to Troubleshooting Tables for additional
information.
C06153
Fig. 64 --- Burner Tray Details
52
LOW HEAT
72,000 BTUH INPUT AND 60,000 BTUH INPUT
MEDIUM AND HIGH HEAT
115,000 BTUH INPUT,
150,000 BTUH INPUT,
90,000BTUH INPUT AND
120,000 BTUH INPUT
C06154
Fig. 65 --- Spark Gap Adjustment
Cleaning and Adjustment
5. Reinstall burner rack as described above.
1. Remove burner rack from unit as described above.
2. Inspect burners and, if dirty, remove burners from rack.
3. Using a soft brush, clean burners and cross-over port as
required.
Step 15 —Replacement Parts
A complete list of replacement parts may be obtained from any
Bryant distributor upon request. Refer to Fig. 66 for a typical unit
wiring schematic.
4. Adjust spark gap. (See Fig. 65.)
53
NOTES:
1. If any of the original wire furnished must be replaced, it must
be replaced with type 90 C wire or its equivalent.
2. Three phase motors are protected under primary single
phasing conditions.
3. Use copper conductors only.
4. TRAN is wired for 230 v unit. If unit is to be run with 208 v
power supply, disconnect BLK wire from 230 v tap (ORN)
and connect to 208 v tap (RED). Insulate end of 230 v tap.
LEGEND
OFM
OLR
P
—
—
—
—
—
—
—
—
Outdoor (Condenser) Fan Motor
Overload Relay
C
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Contactor, Compressor
Capacitor
CAP
CLO
COMP
EQUIP
FPT
FU
Splice
Plug
Compressor Lockout
Compressor Motor
Equipment
PL
Plug Assembly
Splice (Marked)
Factory Wiring
QT
RS
SAT
TRAN
Quadruple Terminal
Rollout Switch
Freeze Up Protection Thermostat
Fuse
Supply Air Temperature Sensor
Transformer
GND
HPS
HS
Ground
Field Control Wiring
High-Pressure Switch
Hall-Effect Sensor
Ignitor
Field Splice
Field Power Wiring
I
Accessory or Optional Wiring
To indicate common potential only;
not to represent wiring.
Marked Wire
IDM
IFC
Induced-Draft Motor
Indoor Fan Contactor
Indoor Fan Motor
Integrated Gas Unit Controller
Low-Pressure Switch
Limit Switch
Terminal (Marked)
Terminal (Unmarked)
Terminal Block
IFM
IGC
LPS
LS
MGV
Main Gas Valve
C06147
Fig. 66 --- Typical Wiring Schematic and Component Arrangement (208/230--3--60 Shown)
54
DCV (Demand Controlled Ventilation) and Power Exhaust
TROUBLESHOOTING
Unit Troubleshooting
Refer to Tables 39--43 for unit troubleshooting details.
Economi$er IV Troubleshooting
See Table 44 for EconoMi$er IV logic.
A functional view of the EconoMi$er IV is shown in Fig. 60.
Typical settings, sensor ranges, and jumper positions are also
shown. An EconoMi$er IV simulator program is available from
your Bryant distributor to help with EconoMi$er IV training and
troubleshooting.
To check DCV and Power Exhaust:
1. Make sure EconoMi$er IV preparation procedure has been
performed.
2. Ensure terminals AQ and AQ1 are open. The LED for
both DCV and Exhaust should be off. The actuator should
be fully closed.
3. Connect a 9-v battery to AQ (positive node) and AQ1
(negative node). The LED for both DCV and Exhaust
should turn on. The actuator should drive to between 90
and 95% open.
Economi$er IV Preparation
4. Turn the Exhaust potentiometer CW until the Exhaust
LED turns off. The LED should turn off when the
potentiometer is approximately 90%. The actuator should
remain in position.
This procedure is used to prepare the EconoMi$er IV for
troubleshooting. No troubleshooting or testing is done by
performing the following procedure.
5. Turn the DCV set point potentiometer CW until the DCV
LED turns off. The DCV LED should turn off when the
potentiometer is approximately 9v. The actuator should
drive fully closed.
6. Turn the DCV and Exhaust potentiometers CCW until the
Exhaust LED turns on. The exhaust contacts will close 30
to 120 seconds after the Exhaust LED turns on.
NOTE: This procedure requires a 9-v battery, 1.2 kilo-ohm
resistor, and a 5.6 kilo-ohm resistor which are not supplied with
the EconoMi$er IV.
IMPORTANT: Be sure to record the positions of all
potentiometers before starting troubleshooting.
1. Disconnect power at TR and TR1. All LEDs should be
off. Exhaust fan contacts should be open.
7. Return EconoMi$er IV settings and wiring to normal
after completing troubleshooting.
2. Disconnect device at P and P1.
3. Jumper P to P1.
DCV Minimum and Maximum Position
4. Disconnect wires at T and T1. Place 5.6 kilo-ohm resistor
across T and T1.
To check the DCV minimum and maximum position:
1. Make sure EconoMi$er IV preparation procedure has been
performed.
5. Jumper TR to 1.
6. Jumper TR to N.
2. Connect a 9-v battery to AQ (positive node) and AQ1
(negative node). The DCV LED should turn on. The
actuator should drive to between 90 and 95% open.
3. Turn the DCV Maximum Position potentiometer to
midpoint. The actuator should drive to between 20 and
80% open.
7. If connected, remove sensor from terminals S and +.
O
Connect 1.2 kilo-ohm 4074EJM checkout resistor across
terminals S and +.
O
8. Put 620-ohm resistor across terminals S and +.
R
9. Set minimum position, DCV set point, and exhaust
potentiometers fully CCW (counterclockwise).
4. Turn the DCV Maximum Position potentiometer to fully
CCW. The actuator should drive fully closed.
5. Turn the Minimum Position potentiometer to midpoint.
The actuator should drive to between 20 and 80% open.
6. Turn the Minimum Position Potentiometer fully CW. The
actuator should drive fully open.
10. Set DCV maximum position potentiometer fully CW
(clockwise).
11. Set enthalpy potentiometer to D.
12. Apply power (24 vac) to terminals TR and TR1.
Differential Enthalpy
7. Remove the jumper from TR and N. The actuator should
drive fully closed.
To check differential enthalpy:
1. Make sure EconoMi$er IV preparation procedure has been
performed.
2. Place 620-ohm resistor across S and +.
8. Return EconoMi$er IV settings and wiring to normal
after completing troubleshooting.
O
Supply--Air Input
3. Place 1.2 kilo-ohm resistor across S and +. The Free
R
To check supply-air input:
Cool LED should be lit.
1. Make sure EconoMi$er IV preparation procedure has been
performed.
4. Remove 620-ohm resistor across S and +. The Free Cool
O
LED should turn off.
2. Set the Enthalpy potentiometer to A. The Free Cool LED
turns on. The actuator should drive to between 20 and
80% open.
5. Return EconoMi$er IV settings and wiring to normal
after completing troubleshooting.
Single Enthalpy
3. Remove the 5.6 kilo-ohm resistor and jumper T to T1. The
actuator should drive fully open.
4. Remove the jumper across T and T1. The actuator should
drive fully closed.
5. Return EconoMi$er IV settings and wiring to normal
after completing troubleshooting.
To check single enthalpy:
1. Make sure EconoMi$er IV preparation procedure has been
performed.
2. Set the enthalpy potentiometer to A (fully CCW). The
Free Cool LED should be lit.
3. Set the enthalpy potentiometer to D (fully CW). The Free
Cool LED should turn off.
4. Return EconoMi$er IV settings and wiring to normal
after completing troubleshooting.
55
Economi$er IV Troubleshooting Completion
5. Remove 620-ohm resistor from terminals S and +.
R
6. Remove 1.2 kilo-ohm checkout resistor from terminals S
This procedure is used to return the EconoMi$er IV to operation.
No troubleshooting or testing is done by performing the
following procedure.
O
and +. If used, reconnect sensor from terminals S and +.
O
7. Remove jumper from TR to N.
8. Remove jumper from TR to 1.
1. Disconnect power at TR and TR1.
2. Set enthalpy potentiometer to previous setting.
3. Set DCV maximum position potentiometer to previous
setting.
9. Remove 5.6 kilo-ohm resistor from T and T1. Reconnect
wires at T and T1.
10. Remove jumper from P to P1. Reconnect device at P and
P1.
4. Set minimum position, DCV set point, and exhaust
potentiometers to previous settings.
11. Apply power (24 vac) to terminals TR and TR1.
Table 39—LED Error Code Service Analysis
SYMPTOM
CAUSE
REMEDY
Hardware Failure.
Loss of power to control module (IGC).
Check 5 amp fuse on IGC, power to unit, 24-v circuit breaker, and
transformer. Units without a 24-v circuit breaker have an internal
overload in the 24-v transformer. If the overload trips, allow
10 minutes for automatic reset.
(LED OFF)
Fan ON/OFF Delay Modified High limit switch opens during heat
Ensure unit is fired on rate and temperature rise is correct.
exchanger warm-up period before fan-on
(LED/FLASH)
delay expires.
Limit switch opens within three minutes
after blower-off delay timing in Heating
mode.
Ensure units’ external static pressure is within application guide-
lines.
Limit Switch Fault.
(LED 2 Flashes)
High temperature limit switch is open.
Check the operation of the indoor (evaporator) fan motor.
Ensure that the supply-air temperature rise is in accordance with
the range on the unit nameplate.
Flame Sense Fault.
(LED 3 Flashes)
The IGC sensed flame that should not be
present.
Reset unit. If problem persists, replace control board.
4 Consecutive Limit
Inadequate airflow to unit.
Check operation of indoor (evaporator) fan motor and that supply-air
temperature rise agrees with range on unit nameplate information.
Switch Faults.
(LED 4 Flashes)
Ignition Lockout.
Unit unsuccessfully attempted ignition for
15 minutes.
Check ignitor and flame sensor electrode spacing, gaps, etc.
Ensure that flame sense and ignition wires are properly
terminated. Verify that unit is obtaining proper amount of gas.
(LED 5 Flashes)
Induced-Draft Motor Fault. IGC does not sense that induced-draft
Check for proper voltage. If motor is operating, check the
speed sensor plug/IGC Terminal J2 connection. Proper
connection: PIN 1— White, PIN 2 — Red, PIN 3 — Black.
(LED 6 Flashes)
motor is operating.
Rollout Switch Fault.
(LED 7 Flashes)
Rollout switch has opened.
Rollout switch will automatically reset, but IGC will continue to
lock out unit. Check gas valve operation. Ensure that induced-
draft blower wheel is properly secured to motor shaft.
Reset unit at unit disconnect.
Internal Control Fault.
(LED 8 Flashes)
Microprocessor has sensed an error in the
software or hardware.
If error code is not cleared by resetting unit power, replace the IGC.
Temporary Software
Electrical interference is impeding the IGC
Reset 24-v to control board or turn thermostat off and then on. Fault
will automatically reset itself in one hour.
Lockout
software.
(LED 9 Flashes)
IMPORTANT: Refer to heating troubleshooting for additional
heating section troubleshooting information.
!
CAUTION
COMPONENT DAMAGE HAZARD
Failure to follow this caution may result in component
damage.
If the IGC must be replaced, be sure to ground yourself to
dissipate any electrical charge that may be present before
handling new control board. The IGC is sensitive to static
electricity and may be damaged if the necessary precautions
are not taken.
LEGEND
IGC --- Integrated Gas Unit Controller
LED --- L igh t --- E mittin g D iode
56
Table 40— Heating Service Analysis
PROBLEM
CAUSE
Misaligned spark electrodes.
No gas at main burners.
REMEDY
Burners Will Not
Check flame ignition and sensor electrode positioning. Adjust as needed.
Ignite.
Check gas line for air purge as necessary. After purging gas line of air, allow gas
to dissipate for at least 5 minutes before attempting to relight unit.
Check gas valve.
Water in gas line.
No power to furnace.
Drain water and install drip leg to trap water.
Check power supply, fuses, wiring, and circuit breaker.
No 24 v power supply to control circuit.
Check transformer. Transformers with internal overcurrent protection require a
cool-down period before resetting. Check 24-v circuit breaker; reset if neces-
sary.
Miswired or loose connections.
Burned-out heat anticipator in thermostat.
Broken thermostat wires.
Dirty air filter.
Check all wiring and wirenut connections.
Replace thermostat.
Run continuity check. Replace wires, if necessary.
Clean or replace filter as necessary.
Inadequate Heating.
Gas input to unit too low.
Check gas pressure at manifold. Clock gas meter for input. If too low, increase
manifold pressure or replace with correct orifices.
Unit undersized for application.
Restricted airflow.
Replace with proper unit or add additional unit.
Clean filter, replace filter, or remove any restrictions.
Blower speed too low.
Use high speed tap, increase fan speed, or install optional blower, as suitable
for individual units, Adjust pulley.
Limit switch cycles main burners.
Too much outdoor air.
Check rotation of blower, thermostat heat anticipator settings, and temperature
rise of unit. Adjust as needed.
Adjust minimum position.
Check economizer operation.
Poor Flame
Incomplete combustion (lack of
combustion air) results in:
Check all screws around flue outlets and burner compartment. Tighten as nec-
Characteristics.
essary.
Aldehyde odors, CO (carbon monoxide),
Cracked heat exchanger.
sooting flame, or floating flame.
Overfired unit — reduce input, change orifices, or adjust gas line or manifold
pressure.
Check vent for restriction. Clean as necessary.
Check orifice to burner alignment.
Burners Will Not
Turn Off.
Unit is locked into Heating mode for a
one minute minimum.
Wait until mandatory one-minute time period has elapsed or reset power to
unit.
Table 41—Perfect Humidity™ Adaptive Dehumidification System Subcooling Mode Service Analysis
PROBLEM
CAUSE
REMEDY
Subcooling Mode (Liquid Reheat)
No power to control transformer from
Check power source and evaporator-fan relay. Ensure all
Will Not Energize.
evaporator-fan motor.
wire connections are tight.
No power from control transformer to liquid line
solenoid valve.
1. Fuse open; check fuse. Ensure continuity of wiring.
2. Low-pressure switch open. Cycle unit off and allow
low-pressure switch to reset. Replace switch if it will
not close.
3. Transformer bad; check transformer.
Liquid line solenoid valve will not operate.
1. Solenoid coil defective; replace.
2. Solenoid valve stuck open; replace.
Liquid line solenoid valve will not open.
Valve is stuck closed; replace valve.
Low System Capacity.
Low refrigerant charge or frosted evaporator coil.
1. Check charge amount. Charge per Fig. 55---58.
2. Evaporator coil frosted; check and replace low-pres-
sure switch if necessary.
Loss of Compressor Superheat
Conditions with Subcooling/Reheat
Dehumidification Coil Energized.
Thermostatic expansion valve (TXV).
1. Check TXV bulb mounting, and secure tightly to suc-
tion line.
2. Replace TXV if stuck open or closed.
Table 42—Perfect Humidity™ Adaptive Dehumidification System Hot Gas Reheat Mode Service Analysis
PROBLEM
Reheat Mode Will Not Energize.
CAUSE
REMEDY
No power to control transformer from
Check power source and evaporator-fan relay. Ensure all
evaporator-fan motor.
wire connections are tight.
No power from control transformer to hot gas
line solenoid valve
1. Fuse open; check fuse. Ensure continuity of wiring.
2. Low-pressure switch open. Cycle unit off and allow
low-pressure switch to reset. Replace switch if it will
not close.
3. Transformer bad; check transformer.
Hot gas line solenoid valve will not operate.
1. Solenoid coil defective; replace.
2. Solenoid valve stuck closed; replace.
Low refrigerant charge or frosted evaporator coil.
1. Check charge amount. Charge per Fig. 55---58.
2. Evaporator coil frosted; check and replace low-pres-
sure switch if necessary.
Loss of Compressor Superheat
Conditions with Subcooling/Reheat
Dehumidification Coil Energized.
Thermostatic expansion valve (TXV).
1. Check TXV bulb mounting, and secure tightly to suc-
tion line.
2. Replace TXV if stuck open or closed.
Valve is stuck, replace valve.
Valve is stuck; replace valve.
Excessive Superheat.
Liquid line solenoid valve will not operate.
Hot gas line solenoid valve will not close.
57
Table 43—Cooling Service Analysis
PROBLEM
CAUSE
REMEDY
Call power company.
Replace fuse or reset circuit breaker.
Replace component.
Power failure.
Compressor and Condenser Fan
Will Not Start.
Fuse blown or circuit breaker tripped.
Defective thermostat, contactor, transformer, or
control relay.
Insufficient line voltage.
Incorrect or faulty wiring.
Thermostat setting too high.
Determine cause and correct.
Check wiring diagram and rewire correctly.
Lower thermostat setting below room tempera-
ture.
Faulty wiring or loose connections in compres-
sor circuit.
Check wiring and repair or replace.
Determine cause. Replace compressor.
Determine cause and replace.
Compressor Will Not Start
But Condenser Fan Runs.
Compressor motor burned out, seized, or in-
ternal overload open.
Defective run/start capacitor, overload, start
relay.
One leg of 3-phase power dead.
Replace fuse or reset circuit breaker. Determine
cause.
Refrigerant overcharge or undercharge.
Recover refrigerant, evacuate system, and re-
Compressor Cycles (Other Than
Normally Satisfying Thermostat).
charge to nameplate.
Defective compressor.
Insufficient line voltage.
Blocked condenser.
Replace and determine cause.
Determine cause and correct.
Determine cause and correct.
Determine cause and replace.
Defective run/start capacitor, overload, or start
relay.
Defective thermostat.
Replace thermostat.
Faulty condenser-fan motor or capacitor.
Restriction in refrigerant system.
Dirty air filter.
Replace.
Locate restriction and remove.
Replace filter.
Compressor Operates Continuously.
Unit undersized for load.
Thermostat set too low.
Low refrigerant charge.
Leaking valves in compressor.
Air in system.
Decrease load or increase unit size.
Reset thermostat.
Locate leak, repair, and recharge.
Replace compressor.
Recover refrigerant, evacuate system, and re-
charge.
Condenser coil dirty or restricted.
Dirty air filter.
Dirty condenser coil.
Refrigerant overcharged.
Air in system.
Clean coil or remove restriction.
Replace filter.
Clean coil.
Excessive Head Pressure.
Recover excess refrigerant.
Recover refrigerant, evacuate system, and re-
charge.
Condenser air restricted or air short-cycling.
Low refrigerant charge.
Compressor valves leaking.
Restriction in liquid tube.
High heat load.
Compressor valves leaking.
Refrigerant overcharged.
Dirty air filter.
Determine cause and correct.
Check for leaks, repair, and recharge.
Replace compressor.
Remove restriction.
Check for source and eliminate.
Replace compressor.
Recover excess refrigerant.
Replace filter.
Check for leaks, repair, and recharge.
Remove source of restriction.
Head Pressure Too Low.
Excessive Suction Pressure.
Suction Pressure Too Low.
Low refrigerant charge.
Metering device or low side restricted.
Insufficient evaporator airflow.
Increase air quantity. Check filter and replace if
necessary.
Temperature too low in conditioned area.
Outdoor ambient below 25 F.
Time off delay not finished.
Reset thermostat.
Install low-ambient kit.
Wait for 30-second off delay.
Evaporator Fan Will Not Shut Off.
58
Table 44—EconoMi$er IV Input/Output Logic
INPUTS
Outdoor
OUTPUTS
N Terminal†
Occupied
Enthalpy*
Compressor
Stage Stage
Demand Control
Ventilation (DCV)
Unoccupied
Y1 Y2
Return
Damper
Closed
1
2
On
Off
Off
Off
Off
Off
On
Off
Off
Off
Off
Off
On On
On Off
Off Off
On On
On Off
Off Off
On On
On Off
Off Off
On On
On Off
Off Off
On
On
Off
On
Off
Off
On
On
Off
On
Off
Off
Below set
High
Low
Minimum position
(DCV LED Off)
(Free Cooling LED Off)
Low
High
Low
High
Modulating** (between min. Modulating** (between
(Free Cooling LED On)
position and full-open)
closed and full-open)
Minimum position
Closed
Above set
High
Modulating†† (between min. Modulating†† (between
position and DCV maximum) closed and DCV
maximum)
(DCV LED On)
(Free Cooling LED Off)
Low
Modulating***
Modulating†††
(Free Cooling LED On)
*For single enthalpy control, the module compares outdoor enthalpy to the ABCD set point.
†Power at N terminal determines Occupied/Unoccupied setting: 24 vac (Occupied), no power (Unoccupied).
**Modulation is based on the supply-air sensor signal.
††Modulation is based on the DCV signal.
***Modulation is based on the greater of DCV and supply-air sensor signals, between minimum position and either maximum position (DCV) or fully open (sup-
ply-air signal).
†††Modulation is based on the greater of DCV and supply-air sensor signals, between closed and either maximum position (DCV) or fully open (supply-air sig-
nal).
C06053
Fig. 67 --- EconoMi$er IV Functional View
59
START-UP CHECKLIST
(Remove and Store in Job File)
I. PRELIMINARY INFORMATION
MODEL NO.:
DATE:
SERIAL NO.:
TECHNICIAN:
II. PRE-START-UP (insert checkmark in box as each item is completed)
j
j
j
j
j
j
j
j
j
VERIFY THAT JOBSITE VOLTAGE AGREES WITH VOLTAGE LISTED ON RATING PLATE
VERIFY THAT ALL PACKAGING MATERIALS HAVE BEEN REMOVED FROM UNIT
REMOVE ALL SHIPPING HOLDDOWN BOLTS AND BRACKETS PER INSTALLATION INSTRUCTIONS
VERIFY THAT CONDENSATE CONNECTION IS INSTALLED PER INSTALLATION INSTRUCTIONS
CHECK ALL ELECTRICAL CONNECTIONS AND TERMINALS FOR TIGHTNESS
CHECK GAS PIPING FOR LEAKS
CHECK THAT RETURN (INDOOR) AIR FILTERS ARE CLEAN AND IN PLACE
VERIFY THAT UNIT INSTALLATION IS LEVEL
CHECK FAN WHEELS AND PROPELLER FOR LOCATION IN HOUSING/ORIFICE AND SETSCREW
TIGHTNESS
j
CHECK TO ENSURE THAT ELECTRICAL WIRING IS NOT IN CONTACT WITH REFRIGERANT LINES
OR SHARP METAL EDGES
j CHECK PULLEY ALIGNMENT AND BELT TENSION PER INSTALLATION INSTRUCTIONS
III. START-UP
ELECTRICAL
SUPPLY VOLTAGE
COMPRESSOR AMPS
INDOOR-FAN AMPS
L1-L2
L1
L1
L2-L3
L2
L2
L3-L1
L3
L3
TEMPERATURES
OUTDOOR-AIR TEMPERATURE
RETURN-AIR TEMPERATURE
COOLING SUPPLY AIR
DB
DB
DB
DB
WB
HEATING SUPPLY AIR
PRESSURES (Cooling Mode)
GAS INLET PRESSURE
IN.WG
IN.WG (HIGH FIRE)
GAS MANIFOLD PRESSURE
REFRIGERANT SUCTION
REFRIGERANT DISCHARGE
PSIG
PSIG
j
VERIFY THAT 3-PHASE FAN MOTOR AND BLOWER ARE ROTATING IN CORRECT DIRECTION. IF THEY
ARE NOT ROTATING IN CORRECT DIRECTION, LOCKING COLLAR MUST BE RE-TIGHTENED AFTER
CORRECTING DIRECTION OF ROTATION
j
j
VERIFY THAT 3-PHASE SCROLL COMPRESSOR IS ROTATING IN THE CORRECT DIRECTION
VERIFY REFRIGERANT CHARGE USING CHARGING CHARTS
E2007 Bryant Heating & Cooling Systems 7310 W. Morris St. Indianapolis, IN 46231
Printed in U.S.A.
Edition Date: 2/07
Catalog No. II581B---C---36---1
Replaces: II 581B---36---7
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
60
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