50HG014-028
Single Package Rooftop Units
Electric Cooling with Electric Heat Option
Installation Instructions
Follow all safety codes. Wear safety glasses and work
gloves. Use quenching cloth for unbrazing operations. Have
fire extinguishers available for all brazing operations.
CONTENTS
Page
SAFETY CONSIDERATIONS. . . . . . . . . . . . . . . . . . . . . . 1
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-23
Step 1 — Provide Unit Support. . . . . . . . . . . . . . . . . . . 1
• ROOF CURB
Before performing service or maintenance operations on
unit, turn off main power switch to unit. Electrical shock
could cause personal injury.
• ALTERNATE UNIT SUPPORT
Step 2 — Remove Shipping Rails . . . . . . . . . . . . . . . . 3
Step 3 — Rig and Place Unit . . . . . . . . . . . . . . . . . . . . . 3
• POSITIONING
• ROOF MOUNT
• INSTALLATION ONTO CURB
IMPORTANT: Units have high ambient operating lim-
its. If limits are exceeded, the units will automatically
lock the compressor out of operation. Manual reset will
be required to restart the compressor.
Step 4 — Field Fabricate Ductwork. . . . . . . . . . . . . . . 8
Step 5 — Make Unit Duct Connections . . . . . . . . . . . 8
Step 6 — Trap Condensate Drain. . . . . . . . . . . . . . . . . 9
Step 7 — Make Electrical Connections . . . . . . . . . . . 9
• FIELD POWER SUPPLY
INSTALLATION
Step 1 — Provide Unit Support
• FIELD CONTROL WIRING
ROOF CURB — Assemble or install accessory roof curb in
accordance with instructions shipped with this accessory. See
Fig. 1. Install insulation, cant strips, roofing, and counter flash-
ing as shown. Ductwork can be installed to roof curb before
unit is set in place. Curb must be level. This is necessary to
permit unit drain to function properly. Unit leveling tolerance is
Step 8 — Install Outdoor-Air Hood . . . . . . . . . . . . . . 20
Step 9 — Position Optional Power Exhaust
or Barometric Relief Damper Hood. . . . . . . . . . . . 22
Step 10 — Non-Fused Disconnect. . . . . . . . . . . . . . . 22
Step 11 — Install All Accessories . . . . . . . . . . . . . . . 23
1
± /16 in. per linear ft in any direction. Refer to Accessory
Roof Curb Installation Instructions for additional information
as required. When accessory roof curb is used, unit may be
installed on class A, B, or C roof covering material.
SAFETY CONSIDERATIONS
Installation and servicing of air-conditioning equipment can
be hazardous due to system pressure and electrical compo-
nents. Only trained and qualified service personnel should
install, repair, or service air-conditioning equipment.
Untrained personnel can perform the basic maintenance
functions of replacing filters. All other operations should
be performed by trained service personnel. When working
on air-conditioning equipment, observe precautions in the
literature, tags and labels attached to the unit, and other safety
precautions that may apply.
IMPORTANT: The gasketing of the unit to the roof curb
is critical for a watertight seal. Install gasket with the
roof curb as shown in Fig. 1. Improperly applied gasket
can also result in air leaks and poor unit performance.
ALTERNATE UNIT SUPPORT — When a curb cannot be
used, install unit on a noncombustible surface. Support unit
with sleepers, using unit curb support area. If sleepers cannot
be used, support long sides of unit with a minimum of 3 equal-
ly spaced 4-in. x 4-in. pads on each side.
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
PC 111 Catalog No. 535-00092 Printed in U.S.A. Form 50HG-7SI Pg 1 11-03 Replaces: 50HG-3SI
Book 1
4
Tab 1b 6b
Four lifting holes are provided in the unit base rails as
shown in Fig. 3. Refer to rigging instructions on unit.
POSITIONING — Maintain clearance, per Fig. 4, around and
above unit to provide minimum distance from combustible
materials, proper airflow, and service access.
Step 2 — Remove Shipping Rails — Remove ship-
ping rails prior to lowering unit onto roof curb. See Fig. 2. The
rails are attached to the unit at both the return end and condens-
er end. Remove the screws from both ends of each rail. Be
careful not to drop the rails onto any surface that could be dam-
aged. Discard the rails. It is important to replace the screws into
the unit to avoid any air or water leakage.
Do not install unit in an indoor location. Do not locate air
inlets near exhaust vents or other sources of contaminated air.
Although unit is weatherproof, guard against water from
higher level runoff and overhangs.
Do not allow the shipping rail to drop on the roof surface.
Damage to the roof surface may result.
ROOF MOUNT — Check building codes for weight distribu-
tion requirements. Unit operating weight is shown in Table 1.
INSTALLATION ONTO CURB — The 50HG units are
designed to fit on either the accessory full perimeter curb or
onto existing 48/50TJ,HJ or 48/50DP,DR curbs. In either case,
correct placement of the unit onto the curb is critical to operat-
ing performance. To aid in correct positioning, 3/8-in. diameter
locating holes have been added to the unit base rails. When
placing the unit, these holes should line up with the roof curb
edge as shown in Fig. 5 and 6, to assure proper duct opening
alignment. Select the alignment holes suited for the curb being
used. For installation on the HJ/TJ/DP/DR curb use the align-
ment holes located approximately 20 in. from the end of the
base rail on the return end of the unit. For placement on the HG
curb, use the alignment holes located approximately 2-in. from
the end of the base rail on the return end of the unit. See labels
on the side of the unit for more details.
Step 3 — Rig and Place Unit — Inspect unit for trans-
portation damage. See Table 1 for physical data. File any claim
with transportation agency.
All panels must be in place when rigging. Unit is not
designed for handling by fork truck. Damage to unit can
result.
Do not drop unit; keep upright. Use spreader bars over unit
to prevent sling or cable damage. Rollers may be used to move
unit across a roof. Level by using unit frame as a reference;
leveling tolerance is ± 1/16 in. per linear ft in any direction. See
Fig. 3 for additional information. Unit rigging weight is shown
in Fig. 3.
SHIPPING RAILS
Fig. 2 — Shipping Rail Removal
3
Fig. 3 — Rigging Details
4
Fig. 4 — Base Unit Dimensions
5
Table 1 — Physical Data
UNIT 50HG
014
016
020
208/230
208/230
and 460
15
208/230
and 460
17.5
VOLTAGE
575
575
15
575
and 460
NOMINAL CAPACITY (Tons)
12.5
12.5
17.5
OPERATING WEIGHT (lb)
50 SERIES (Cooling Only)
2017
2017
2111
2111
2139
2139
COMPRESSOR
Quantity
2
2
3
3
3
3
3
3
3
Number of Refrigerant Circuits
Oil (ounces) Ckt A...Ckt B...Ckt C
2
2
3
72...72...NA
72...72...NA
68...68...68
68...68...68
68...68...72 68...68...72
REFRIGERANT TYPE
Expansion Device
Operating Charge (lb)
Circuit A
R-22
TXV
TXV
TXV
TXV
TXV
TXV
19.6
18.3
NA
19.6
18.3
NA
13.2
12.2
15.4
13.2
12.2
15.4
13.1
12.7
15.2
13.1
12.7
15.2
Circuit B
Circuit C
CONDENSER COIL
Rows...Fins/inch
Total Face area (sq. ft)
2...17
57.78
2...17
57.78
2...17
57.78
2...17
57.78
2...17
57.78
2...17
57.78
CONDENSER FAN
Nominal Cfm (Total, all fans)
Quantity...Diameter (in.)
Motor Hp...Rpm
14,000
4...22
14,000
4...22
14,000
4...22
14,000
4...22
14,000
4...22
14,000
4...22
1/4...1100
1400
1/4...1100
1400
1/4...1100
1400
1/4...1100
1400
1/4...1100
1400
1/4...1100
1400
Watts input (Total)
EVAPORATOR COIL
Rows...Fins/inch
Total Face area (sq. ft)
Face Split
3...15
23.33
3...15
23.33
3...15
23.33
3...15
23.33
3...15
23.33
3...15
23.33
EVAPORATOR FAN
Quantity...Size
2...15x11
Belt
2...15x11
Belt
2...15x11
Belt
2...15x11
Belt
2...15x11
Belt
2...15x11
Belt
Type Drive
Nominal Cfm
5000
5000
6000
6000
7000
7000
Std Motor Hp
3.7
3
5
3.7
3
5
5
5
Alt Motor Hp
5
5
71/2
71/2
Motor Nominal Rpm
Std Maximum Continuous Bhp
Std Maximum Continuous Watts
Alt Maximum Continuous Bhp
Alt Maximum Continuous Watts
Motor Frame Size
1725
1725
1725
1725
1725
1725
4.25
3.45
4.25
3.45
5.75
5.75
3171
2574
3171
2574
4290
4290
5.75
5.75
5.75
5.75
8.63
8.63
4290
4290
4290
4290
6438
6438
Standard
56HZ
S184T
485-613
618-789
778-1021
1000-1227
Ball
56H
56HZ
S184T
618-789
485-613
778-1021
1000-1227
Ball
56H
S184T
S213T
658-808
794-974
949-1145
1126-1328
Ball
184T
Motor Frame Size
Fan Drive Rpm Range
Alternate
184T
184T
S213T
658-808
794-974
949-1145
1126-1328
Ball
Std motor/Std drive
Std motor/Alt drive
Alt motor/Std drive
Alt motor/Alt drive
472-619
609-778
778-1021
1000-1227
Ball
609-778
472-619
778-1021
1000-1227
Ball
Motor Bearing Type
Maximum Allowable Rpm
Motor Pulley Pitch Diameter
1400
1400
1400
1400
1400
1400
Std motor/Std drive
Std motor/Alt drive
Alt motor/Std drive
Alt motor/Alt drive
Standard
3.7-4.7
3.4-4.4
3.1-4.1
3.1-4.1
3.4-4.4
3.1-4.1
3.4-4.4
3.7-4.7
3.1-4.1
3.4-4.4
3.1-4.1
3.1-4.1
4.3-5.3
4.3-5.3
5.4-6.6
5.5-6.5
11/8
4.3-5.3
4.3-5.3
5.4-6.6
5.5-6.5
11/8
4.3-5.3
4.3-5.3
4.3-5.3
4.3-5.3
7
7
7
7
Motor Shaft Diameter (in.)
Motor Shaft Diameter (in.)
Belt, Quantity...Type...Length (in.)
/
/
/
/
8
8
8
8
Alternate
11/8
11/8
11/8
11/8
13/8
13/8
Std motor/Std drive
Std motor/Alt drive
Alt motor/Std drive
Alt motor/Alt drive
1...BX...51
1...A...45
1...BX...38
1...B...38
11.3-12.3
1...BX...48
1...A...45
1...BX...38
1...B...38
11.3-12.3
1...A...45
1...BX...51
1...BX...38
1...B...38
11.3-12.3
1...A...45
1...BX...48
1...BX...38
1...B...38
11.3-12.3
1...BX...46
1...BX...42
1...BX...46
1...BX...42
10.0-12.2
1...BX...46
1...BX...42
1...BX...46
1...BX...42
10.0-12.2
Pulley center line distance (in.)
Speed change per full turn of moveable
pulley flange (rpm)
Std motor/Std drive
Std motor/Alt drive
Alt motor/Std drive
Alt motor/Alt drive
21
29
41
38
6
25
28
41
38
6
29
21
41
38
6
28
25
41
38
6
25
30
33
34
6
25
30
33
34
6
Moveable pulley maximum (full turns
from closed position)
Factory Pulley Setting
(turns from closed position)
Fan Shaft Diameter (in.)
3
3
3
3
3
3
13/16
549
13/16
546
13/16
704
13/16
694
13/16
733
13/16
733
Factory Speed Setting (rpm)
HIGH PRESSURE SWITCHES (psig)
Cutout
426
320
426
320
426
320
426
320
426
320
426
320
Reset (Auto)
OUTDOOR AIR INLET SCREENS
Quantity...Size (in.)
RETURN AIR FILTERS
Quantity...Size (in.)
3...20x25
9...16x25
3...20x25
9...16x25
3...20x25
9...16x25
3...20x25
9...16x25
3...20x25
9...16x25
3...20x25
9...16x25
LEGEND
Bhp
TXV
—
—
Brake Horsepower
Thermostatic Expansion Valve
6
Table 1 — Physical Data (cont)
UNIT 50HG
024
028
ALL
25
208/230
and 460
20
VOLTAGE
575
20
NOMINAL CAPACITY (Tons)
OPERATING WEIGHT (lb)
50 SERIES (Cooling Only)
2187
2187
2446
COMPRESSOR
Quantity
3
3
2
Number of Refrigerant Circuits
Oil (ounces) Ckt A...Ckt B...Ckt C
3
3
2
72...72...72
72...72...72
110...110...NA
REFRIGERANT TYPE
Expansion Device
Operating Charge (lb)
Circuit A
R-22
TXV
TXV
TXV
13.8
13.9
15.5
13.8
13.9
15.5
23.9
21.5
NA
Circuit B
Circuit C
CONDENSER COIL
Rows...Fins/inch
Total Face Area (sq. ft)
2...17
57.78
2...17
57.78
2...17
66.67
CONDENSER FAN
Nominal Cfm (Total, all fans)
Quantity...Diameter (in.)
Motor Hp...Rpm
14,000
4...22
14,000
4...22
21,000
6...22
1/4...1100
1400
1/4...1100
1400
1/4...1100
2100
Watts input (Total)
EVAPORATOR COIL
Rows...Fins/inch
Total Face Area (sq. ft)
Face Split
4...15
23.33
4...15
23.33
4...15
27.22
EVAPORATOR FAN
Quantity...Size
2...15x11
Belt
2...15x11
Belt
2...15x11
Belt
Type Drive
Nominal Cfm
8000
8000
10,000
Std Motor Hp
5
5
71/2
Alt Motor Hp
71/2
71/2
10
Motor Nominal Rpm
Std Maximum Continuous Bhp
Std Maximum Continuous Watts
Alt Maximum Continuous Bhp
Alt Maximum Continuous Watts
Motor Frame Size
1725
1725
1725
5.75
5.75
8.63
4290
4290
6438
8.63
8.63
11.50
6438
6438
8579
Standard
S184T
S213T
658-808
794-974
949-1145
1126-1328
Ball
184T
S213T
S215T
799-965
939-1152
945-1187
1152-1366
Ball
Motor Frame Size
Fan Drive Rpm Range
Alternate
S213T
658-808
794-974
949-1145
1126-1328
Ball
Std motor/Std drive
Std motor/Alt drive
Alt motor/Std drive
Alt motor/Alt drive
Motor Bearing Type
Maximum Allowable Rpm
Motor Pulley Pitch Diameter
1400
1400
1400
Std motor/Std drive
Std motor/Alt drive
Alt motor/Std drive
Alt motor/Alt drive
Standard
4.3-5.3
4.3-5.3
5.4-6.6
5.5-6.5
11/8
4.3-5.3
4.3-5.3
5.4-6.6
5.5-6.5
11/8
5.4-6.6
4.2-5.2
4.2-5.2
5.2-6.2
13/8
Motor Shaft Diameter (in.)
Motor Shaft Diameter (in.)
Belt, Quantity...Type...Length (in.)
Alternate
13/8
13/8
13/8
Std motor/Std drive
Std motor/Alt drive
Alt motor/Std drive
Alt motor/Alt drive
1...BX...46
1...BX...42
1...BX...46
1...BX...42
10.0-12.2
1...BX...46
1...BX...42
1...BX...46
1...BX...42
10.0-12.2
1...BX...50
2...AX...38
2...BX...38
2...BX...38
9.6-12.0
Pulley center line distance (in.)
Speed change per full turn of moveable
pulley flange (rpm)
Std motor/Std drive
Std motor/Alt drive
Alt motor/Std drive
Alt motor/Alt drive
25
30
33
34
6
25
30
33
34
6
28
36
40
36
6
Moveable pulley maximum (full turns
from closed position)
Factory Pulley Setting
(turns from closed position)
Fan Shaft Diameter (in.)
3
3
3
13/16
733
13/16
733
13/16
882
Factory Speed Setting (rpm)
HIGH PRESSURE SWITCHES (psig)
Cutout
426
320
426
320
426
320
Reset (Auto)
OUTDOOR AIR INLET SCREENS
Quantity...Size (in.)
RETURN AIR FILTERS
Quantity...Size (in.)
3...20x25
9...16x25
3...20x25
9...16x25
3...20x25
9...20x25
LEGEND
Bhp
TXV
—
—
Brake Horsepower
Thermostatic Expansion Valve
7
HORIZONTAL APPLICATIONS — Horizontal units are
shipped with outer panels that allow for side by side horizontal
duct connections. If specified during ordering, the unit will be
shipped with the vertical duct openings blocked off from the
factory, ready for side supply installation. If the horizontal
option was not specified at time of ordering the unit, a field-
installed accessory kit is required to convert the vertical unit
into a horizontal supply configuration.
Installation of the duct block-off covers should be complet-
ed prior to placing the unit unless sufficient side clearance is
available. A minimum of 66-in. is required between the unit
and any obstruction to install the duct block-off covers. Side
supply duct dimensions and locations are shown on Fig. 4.
Connect ductwork to horizontal duct flange connections on
side of unit.
ALIGNMENT
HOLE
(IN BASE RAIL)
ALIGNMENT
HOLE SHOULD
LINE UP WITH
ROOF CURB
EDGE FLANGE
EDGE FLANGE
Fig. 5 — Alignment Hole Details
ALIGNMENT
HOLES FOR
HJ, TJ, DP, DR
CURB-BOTH
SIDES
ECONOMIZER
SUPPLY
OPENING
RETURN
OPENING
CURB
RETURN
OPENING
CURB
SUPPLY
OPENING
ALIGNMENT
HOLES FOR HG
CURB-BOTH
SIDES
SEE
NOTE
SEE
NOTE
ROOF CURB
Fig. 6 — Alignment Hole Location
AIR
IN
AIR
OUT
Step 4 — Field Fabricate Ductwork — Secure all
ducts to building structure. Use flexible duct connectors be-
tween unit and ducts as required. Insulate and weatherproof all
external ductwork, joints, and roof openings with counter
flashing and mastic in accordance with applicable codes.
NOTE: Do not drill in this area; damage to basepan may result in
water leak.
Fig. 7 — Air Distribution —
Vertical Supply and Return
Ducts passing through an unconditioned space must be in-
sulated and covered with a vapor barrier.
Step 5 — Make Unit Duct Connections
ECONOMIZER
VERTICAL CONFIGURATION — Unit is shipped for thru-
the-bottom duct connections. Ductwork openings are shown in
Fig. 1 and 4. Duct connections for vertical supply and return
configuration are shown in Fig. 7. Field fabricated concentric
ductwork may be connected as shown in Fig. 8 and 9. The unit
is designed to attach the ductwork to the roof curb. Do not
attach duct directly to the unit basepans.
Unit basepans must be supported under the unit and around
duct openings in order to prevent air leakage.
SEE
NOTE
SEE
NOTE
For vertical supply and return units, tools or parts could
drop into ductwork and cause an injury. Install a 90-degree
turn in the return ductwork between the unit and the condi-
tioned space. If a 90-degree elbow cannot be installed, then
a grille of sufficient strength and density should be installed
to prevent objects from falling into the conditioned space.
AIR OUT
AIR OUT
AIR IN
NOTE: Do not drill in this area; damage to basepan may result in
water leak.
Units with electric heat require a 1-in. clearance for the first
24 in. of ductwork. Outlet grilles must not lie directly below
unit discharge.
Fig. 8 — Air Distribution — Concentric Duct
NOTE: A 90-degree elbow must be provided in the supply
ductwork to comply with UL (Underwriters’ Laboratories)
codes for use with electric heat.
8
Operating voltage to compressor must be within voltage
range indicated on unit nameplate. On 3-phase units, voltages
between phases must be balanced within 2%.
Unit failure as a result of operation on improper line voltage
or excessive phase imbalance constitutes abuse and may cause
damage to electrical components.
FIELD CONTROL WIRING — Unit can be controlled with
either a Carrier-approved accessory thermostat or a Carrier-
approved space temperature sensor. Install thermostat accord-
ing to the installation instructions included with accessory.
Locate thermostat assembly or space temperature sensor on a
solid interior wall in the conditioned space to sense average
temperature.
Route thermostat or space temperature sensor cable or
equivalent single leads of colored wire from subbase terminals
through conduit into unit to low-voltage connections as shown
on unit label wiring diagram and in Fig. 13 or 14.
NOTE: Dimensions A, A′, B, and B′ are obtained from field-supplied
ceiling diffuser.
NOTE: For wire runs up to 50 ft, use no. 18 AWG (American
Wire Gage) 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 at
the thermostat and will require a junction box and splice at the
thermostat.
Shaded areas indicate block-off pans.
Fig. 9 — Concentric Duct Details
Step 6 — Trap Condensate Drain — See Fig. 10
for drain location. One 3/4-in. half coupling is provided outside
unit evaporator section for condensate drain connection. A trap
at least 4-in. deep must be used. See Fig. 11.
Step 7 — Make Electrical Connections
FIELD POWER SUPPLY — Unit is factory wired for volt-
age shown on unit nameplate.
When installing units, provide disconnect per NEC (Nation-
al Electrical Code) of adequate size (MOCP [Maximum
Overcurrent protection] of unit is on the informative plate). See
Tables 2A and 2B. All field wiring must comply with NEC and
local codes. Size wire based on MCA (Minimum Circuit
Amps) on the unit informative plate. See Fig. 12 for power
wiring connections to the unit power terminal block and
equipment grounds.
Route power and ground lines through control box end pan-
el or unit basepan (see Fig. 4) to connections as shown on unit
wiring diagram and Fig. 12.
Fig. 10 — Condensate Drain Details
The correct power phasing is critical to the operation of the
scroll compressors. An incorrect phasing will result in an
alarm being generated and compressor operation lockout.
Should this occur, power phase correction must be made to
the incoming power.
The unit must be electrically grounded in accordance with
local codes and NEC ANSI/NFPA 70 (American National
Standards Institute/National Fire Protection Association).
Field wiring must conform to temperature limitations for
type ‘‘T’’ wire. All field wiring must comply with NEC and
local requirements.
NOTE: Dimensions in [] are in millimeters.
Fig. 11 — Condensate Drain Piping Details
9
Table 2A — Electrical Data (Units Without Optional Convenience Outlet)
COMPRESSOR
No. 2
VOLTAGE
RANGE
ELECTRIC
HEAT
POWER
POWER
SUPPLY
DISCONNECT
SIZE
OFM
IFM
FLA
UNIT
SIZE
NOMINAL
VOLTAGE
EXHAUST
No. 1
No. 3
FLA
(ea)
FLA
50HG (3 Ph, 60 Hz)
Min Max RLA LRA RLA LRA RLA LRA Qty Hp
kW
FLA
Hp
Qty Hp
MCA
MOCP*
FLA
(ea)
—
2
—
2
—
2
—
2
—
2
—
2
—
2
—
2
—
2
—
2
—
2
—
2
—
2
—
2
—
2
—
2
—
2
—
2
—
2
—
2
—
2
—
2
—
2
—
2
—
—
60/ 59
72/ 71
66/ 64
78/ 76
60/ 60
72/ 74
66/ 67
78/ 81
78/ 87
70/ 70
90/ 80
80/ 80
90/ 90
70/ 70
90/ 80
80/ 80
90/ 90
80/ 90
70/ 70
80/ 80
80/ 70
90/ 90
70/ 70
80/ 80
80/ 70
90/ 90
80/ 90
90/100
80/ 90
100/110
150/150
150/175
150/175
175/175
35
40
35
45
35
40
35
45
45
50
45
60
80
90
80
90
30
35
30
35
30
35
30
35
35
3.7 10.6/ 9.6
5.0 16.7/15.2
3.7 10.6/ 9.6
5.0 16.7/15.2
3.7 10.6 /9.6
5.0 16.7/15.2
3.7 10.6/ 9.6
5.0 16.7/15.2
1.0 5.9
—
1.0 5.9
—
1.0 5.9
—
1.0 5.9
—
1.0 5.9
—
1.0 5.9
—
1.0 5.9
—
1.0 5.9
—
1.0 3.1
—
1.0 3.1
—
1.0 3.1
—
1.0 3.1
—
1.0 3.1
—
1.0 3.1
—
1.0 3.1
—
1.0 3.1
—
1.0 3.1
—
1.0 3.1
—
1.0 3.1
—
1.0 3.1
—
1.0 3.1
—
1.0 3.1
—
1.0 3.1
—
1.0 3.1
—
—
—
—
12/16
19/25
33/ 38
—
1
208/230
187 253 19.2 146.0 19.2 146.0
—
—
—
—
—
—
4.0
4.0
4.0
/
/
/
1.5
0.7
0.7
4
4
4
—
93/102 100/110
86/ 94 90/100
52/ 60
—
101/109 110/110
143/132 150/150
158/147 175/150
151/139 175/150
166/154 175/175
—
38/50 104/120
—
—
29
35
32
38
29
36
32
40
44
51
47
55
66
74
70
77
24
30
26
32
24
31
26
34
35
43
38
45
62
70
65
73
35
40
40
45
35
40
40
45
45
60
50
60
80
80
80
80
30
35
30
35
30
35
30
35
35
45
40
50
70
80
70
80
3.7
5.0
3.7
5.0
3.7
5.0
3.7
5.0
3.0
5.0
3.0
5.0
3.0
5.0
3.0
5.0
4.8
7.6
4.8
7.6
4.8
7.6
4.8
7.6
3.9
6.1
3.9
6.1
3.9
6.1
3.9
6.1
—
15
25
50
—
16
25
48
—
18
30
60
—
15
24
46
—
—
—
1
014
460
414 506
9.5
73.0
9.5
73.0
—
—
—
—
—
—
—
—
1
575
518 633
7.6
58.4
7.6
58.4
—
40
35
45
60
70
60
70
—
—
—
LEGEND AND NOTES FOR TABLES 2A AND 2B
LEGEND
MCA
Heating, Air Conditioning and MOCP
Refrigeration NEC
Indoor (Evaporator) Fan Motor OFM
Locked Rotor Amps RLA
Determine maximum deviation from average voltage.
(AB) 457 – 452 = 5 v
(BC) 464 – 457 = 7 v
(AC) 457 – 455 = 2 v
FLA
—
—
Full Load Amps
—
Minimum Circuit Amps
HACR
—
—
—
—
Maximum Overcurrent Protection
National Electrical Code
IFM
LRA
—
—
Outdoor (Condenser) Fan Motor
Rated Load Amps
Maximum deviation is 7 v.
Determine percent of voltage imbalance.
7
*Fuse or HACR circuit breaker.
% Voltage Imbalance = 100 x
†208/230 v 75-kW Electric Heat units must use dual-point wiring. The main table lists the
branch circuit values for the refrigeration part of the system. The following two tables list
the branch circuit values for the electric heat and values for a feeder circuit for both branch
circuits.
457
= 1.53%
This amount of phase imbalance is satisfactory as it is below the maximum allowable
2%.
NOTES:
1. In compliance with NEC requirements for multimotor and combination load equipment
(refer to NEC Articles 430 and 440), the overcurrent protective device for the unit shall
be fuse or HACR breaker. Canadian units may be fuse or circuit breaker.
2. Unbalanced 3-Phase Supply Voltage
IMPORTANT: If the supply voltage phase imbalance is more than 2%, contact your
local electric utility company immediately.
Never operate a motor where a phase imbalance in supply voltage is greater than 2%.
Use the following formula to determine the percent of voltage imbalance.
3. The 75-kW 208/240-v electric heat can be factory installed but it must be wired sepa-
rately in the field.
4. The convenience outlet full load amps (FLA) are 5, 3 and 3 for 208/230, 460, 575-v
units, respectively.
5. The FLA load amps provided in the table for electric heaters are based on 208/240, 480
and 600v.
6. MCA calculation for 50HG014-028 units with electric heaters over 50 kW is = 1.25 x
(IFM + Power Exhaust + Convenience Outlet FLA amps) + 1.00 x (Electric Heater FLA).
% Voltage Imbalance
max voltage deviation from average voltage
= 100 x
average voltage
Example: Supply voltage is 460-3-60.
AB = 452 v
BC = 464 v
AC = 455 v
452 + 464 + 455
Average Voltage =
3
1371
3
=
=
457
10
Table 2A — Electrical Data (Units Without Optional Convenience Outlet) (cont)
COMPRESSOR
No. 2
VOLTAGE
RANGE
ELECTRIC
HEAT
POWER
POWER
SUPPLY
DISCONNECT
SIZE
OFM
IFM
FLA
UNIT
SIZE
NOMINAL
VOLTAGE
EXHAUST
No. 1
No. 3
FLA
(ea)
FLA
50HG (3 Ph, 60 Hz)
Min Max RLA LRA RLA LRA RLA LRA Qty Hp
kW
FLA
Hp
Qty Hp
MCA
MOCP*
FLA
(ea)
—
2
—
—
71/ 70
83/ 82
80/ 80
90/ 90
80/ 80
100/ 90
90/ 90
100/100
80/ 90
100/100
90/ 90
100/110
150/150
150/175
150/175
175/175
80/ 80†
100/ 90†
90/ 90†
100/100†
40
3.7 10.6/ 9.6
5.0 16.7/15.2
3.7 10.6/ 9.6
5.0 16.7/15.2
3.7 10.6/ 9.6
5.0 16.7/15.2
3.7 10.6/ 9.6
5.0 16.7/15.2
1.0 5.9
—
—
—
2
—
—
77/ 75
89/ 87
90/ 90
100/100
80/ 90
1.0 5.9
—
2
—
—
78/ 87
1.0 5.9
93/102
100/110
90/100
19/25
52/ 60
—
2
—
—
86/ 94
1.0 5.9
101/109
143/132
158/147
151/139
166/154
71/ 70†
83/ 82†
77/ 75†
110/110
150/150
175/150
175/150
175/175
80/ 80†
90/ 90†
90/ 90†
1
208/230
187 253 16.7 130.0 16.7 130.0 16.7 130.0 4.0
/
/
/
1.5
0.7
0.7
4
4
4
—
2
—
—
1.0 5.9
38/50 104/120
—
2
—
—
1.0 5.9
—
2
—
—
1.0 5.9
56/75† 156/180
—
2
—
—
1.0 5.9
89/ 87† 100/100†
—
2
—
—
37
43
40
46
44
51
47
55
66
74
70
77
96
104
100
107
29
36
32
38
35
43
38
45
62
70
65
73
80
88
83
90
45
50
3.7
5.0
3.7
5.0
3.7
5.0
3.7
5.0
3.0
5.0
3.0
5.0
3.0
5.0
3.0
5.0
4.8
7.6
4.8
7.6
4.8
7.6
4.8
7.6
3.9
6.1
3.9
6.1
3.9
6.1
3.9
6.1
1.0 3.1
50
—
25
50
75
—
25
48
78
—
30
60
90
—
24
46
75
—
2
—
—
45
45
1.0 3.1
50
60
—
2
—
—
45
60
45
50
1.0 3.1
—
2
—
—
50
45
1.0 3.1
60
60
1
016
460
414 506
9.0
70.0
9.0
70.0
9.0
70.0 4.0
—
2
—
—
80
80
1.0 3.1
80
90
—
2
—
—
80
80
80
90
1.0 3.1
—
2
—
—
110
110
110
125
35
110
1.0 3.1
125
—
2
—
—
125
1.0 3.1
125
—
2
—
—
35
40
1.0 3.1
40
—
2
—
—
35
35
1.0 3.1
40
45
—
2
—
—
35
35
1.0 3.1
45
40
—
2
—
2
—
—
40
35
1.0 3.1
—
50
70
45
60
1
575
518 633
7.0
55.0
7.0
55.0
7.0
55.0 4.0
—
1.0 3.1
80
70
—
2
—
—
70
60
1.0 3.1
80
70
—
2
—
2
—
—
90
100
1.0 3.1
—
100
90
100
100
—
1.0 3.1
100
110
ELECTRIC HEAT BRANCH CIRCUIT FOR 208/240-V 75-kW ELECTRIC HEAT
COMPRESSOR
No. 2
VOLTAGE
RANGE
ELECTRIC
HEAT
POWER
POWER
SUPPLY
DISCONNECT
SIZE
OFM
IFM
UNIT
SIZE
NOMINAL
VOLTAGE
EXHAUST
No. 1
No. 3
FLA
(ea)
FLA
(ea)
50HG (3 Ph, 60 Hz)
Min Max RLA LRA RLA LRA RLA LRA Qty Hp
kW
FLA
Hp FLA Qty Hp
MCA
MOCP*
FLA
016
208/240
187 253
NA
NA
NA
NA
NA
NA
NA NA
NA
56/75 156/180 NA NA NA NA
NA
156/180 175/200
200/225
FEEDER CIRCUIT FOR 208/230-V UNIT WITH 75-kW ELECTRIC HEAT
COMPRESSOR
No. 2
VOLTAGE
RANGE
ELECTRIC
HEAT
POWER
POWER
SUPPLY
DISCONNECT
SIZE
OFM
IFM
FLA
UNIT
SIZE
NOMINAL
VOLTAGE
EXHAUST
No. 1
No. 3
FLA
(ea)
FLA
50HG (3 Ph, 60 Hz)
Min Max RLA LRA RLA LRA RLA LRA Qty Hp
kW
FLA
Hp
Qty Hp
MCA
MOCP*
FLA
(ea)
—
2
—
—
169/192 200/225
200/225
225/250
200/225
225/250
3.7 10.6/ 9.6
5.0 16.7/15.2
1.0 5.9 184/207 200/225
177/199 200/225
1.0 5.9 192/214 200/225
1
016
208/230
187 253 16.7 130.0 16.7 130.0 16.7 130.0 4.0
/
4
1.5 56/75 156/180
—
2
—
—
See Legend and Notes on page 10.
11
Table 2A — Electrical Data (Units Without Optional Convenience Outlet) (cont)
COMPRESSOR
No. 2
VOLTAGE
RANGE
ELECTRIC
HEAT
POWER
POWER
SUPPLY
DISCONNECT
SIZE
OFM
IFM
FLA
UNIT
SIZE
NOMINAL
VOLTAGE
EXHAUST
No. 1
No. 3
FLA
(ea)
FLA
50HG (3 Ph, 60 Hz)
Min Max RLA LRA RLA LRA RLA LRA Qty Hp
kW
FLA
Hp
Qty Hp
MCA
MOCP*
FLA
(ea)
—
2
—
—
84/ 83
96/ 94
100/100
110/110
110/110
125/110
100/100
110/110
110/110
125/125
175/150
175/175
175/150
200/175
100/ 90
110/110
100/100
125/110
100/ 90
110/110
100/100
125/110
150/175
175/175
150/175
175/200
100/ 90†
110/110†
100/100†
125/110†
45
5.0 16.7/15.2
7.5 24.2/22.0
5.0 16.7/15.2
7.5 24.2/22.0
5.0 16.7/15.2
7.5 24.2/22.0
5.0 16.7/15.2
7.5 24.2/22.0
1.0 5.9
—
—
—
2
—
—
92/ 89
104/101
86/ 94
1.0 5.9
—
2
—
—
1.0 5.9
101/109
95/103
19/25
52/ 60
—
2
—
—
1.0 5.9
110/117
151/139
166/154
160/148
175/162
1
208/230
187 253 16.7 130.0 16.7 130.0 22.4 184.0 4.0
/
/
/
1.5
0.7
0.7
4
4
4
—
2
—
—
1.0 5.9
38/50 104/120
—
2
—
—
1.0 5.9
—
2
—
—
84/ 83† 100/100†
96/ 94† 110/110†
92/ 89† 110/110†
104/101† 125/110†
1.0 5.9
56/75† 156/180
—
2
—
—
1.0 5.9
—
2
—
—
42
48
45
51
47
55
51
59
70
77
74
82
100
107
104
112
35
41
37
44
38
45
41
49
65
73
69
77
83
90
86
94
50
50
5.0
7.5
5.0
7.5
5.0
7.5
5.0
7.5
5.0
7.5
5.0
7.5
5.0
7.5
5.0
7.5
7.6
11.0
7.6
1.0 3.1
60
—
25
50
75
—
25
48
78
—
30
60
90
—
24
46
75
—
2
—
—
50
50
1.0 3.1
60
60
—
2
—
—
50
60
45
60
1.0 3.1
—
2
—
—
60
50
11.0
7.6
1.0 3.1
60
60
1
020
460
414 506
9.0
70.0
9.0
70.0 10.7
90.0 4.0
—
2
—
—
80
80
1.0 3.1
80
90
—
2
—
—
80
90
90
90
11.0
7.6
1.0 3.1
—
2
—
—
110
125
125
125
40
125
1.0 3.1
125
—
2
—
—
125
11.0
6.1
1.0 3.1
125
—
2
—
—
40
45
1.0 3.1
50
—
2
—
—
45
45
9.0
1.0 3.1
50
50
—
2
—
—
40
40
6.1
1.0 3.1
50
45
—
2
—
2
—
—
45
45
9.0
1.0 3.1
—
50
70
50
60
1
575
518 633
7.0
55.0
7.0
55.0
9.3
73.0 4.0
—
6.1
1.0 3.1
80
70
—
2
—
—
70
70
9.0
1.0 3.1
80
80
—
2
—
2
—
—
90
100
6.1
1.0 3.1
—
100
100
100
110
100
—
9.0
1.0 3.1
110
ELECTRIC HEAT BRANCH CIRCUIT FOR 208/240-V 75-kW ELECTRIC HEAT
COMPRESSOR
No. 2
VOLTAGE
RANGE
ELECTRIC
HEAT
POWER
POWER
SUPPLY
DISCONNECT
SIZE
OFM
IFM
UNIT
SIZE
NOMINAL
VOLTAGE
EXHAUST
No. 1
No. 3
FLA
(ea)
FLA
(ea)
50HG (3 Ph, 60 Hz)
Min Max RLA LRA RLA LRA RLA LRA Qty Hp
kW
FLA
Hp FLA Qty Hp
MCA
MOCP*
FLA
020
208/240
187 253
NA
NA
NA
NA
NA
NA
NA NA
NA
56/75 156/180 NA NA NA NA
NA
156/180 175/200
200/225
FEEDER CIRCUIT FOR 208/230-V UNIT WITH 75-kW ELECTRIC HEAT
COMPRESSOR
No. 2
VOLTAGE
RANGE
ELECTRIC
HEAT
POWER
POWER
SUPPLY
DISCONNECT
SIZE
OFM
IFM
FLA
UNIT
SIZE
NOMINAL
VOLTAGE
EXHAUST
No. 1
No. 3
FLA
(ea)
FLA
50HG (3 Ph, 60 Hz)
Min Max RLA LRA RLA LRA RLA LRA Qty Hp
kW
FLA
Hp
Qty Hp
MCA
MOCP*
FLA
(ea)
—
2
—
—
177/199 200/225
200/225
225/250
225/250
225/250
5.0 16.7/15.2
7.5 24.2/22.0
1.0 5.9 192/214 200/225
186/208 200/225
1.0 5.9 201/222 225/225
1
020
208/230
187 253 16.7 130.0 16.7 130.0 22.4 184.0 4.0
/
4
1.5 56/75 156/180
—
2
—
—
See Legend and Notes on page 10.
12
Table 2A — Electrical Data (Units Without Optional Convenience Outlet) (cont)
COMPRESSOR
No. 2
VOLTAGE
RANGE
ELECTRIC
HEAT
POWER
POWER
SUPPLY
DISCONNECT
SIZE
OFM
IFM
FLA
UNIT
SIZE
NOMINAL
VOLTAGE
EXHAUST
No. 1
No. 3
FLA
(ea)
FLA
50HG (3 Ph, 60 Hz)
Min Max RLA LRA RLA LRA RLA LRA Qty Hp
kW
FLA
Hp
Qty Hp
MCA
MOCP*
FLA
(ea)
—
2
—
—
96/ 94
107/106
104/101
115/113
96/ 94
110/110
125/125
125/110
125/125
110/110
125/125
125/110
125/125
175/150
175/175
175/150
200/175
110/110
125/125
125/110
150/125
110/110
125/125
125/110
150/125
150/175
175/175
150/175
175/200
110/110†
125/125†
125/110†
150/125†
50
5.0 16.7/15.2
7.5 24.2/22.0
5.0 16.7/15.2
7.5 24.2/22.0
5.0 16.7/15.2
7.5 24.2/22.0
5.0 16.7/15.2
7.5 24.2/22.0
1.0 5.9
—
—
—
2
—
—
1.0 5.9
—
2
—
—
1.0 5.9
107/109
104/103
115/117
151/139
166/154
160/148
175/162
19/25
52/ 60
—
2
—
—
1.0 5.9
1
208/230
187 253 22.4 184.0 22.4 184.0 22.4 184.0 4.0
/
/
/
1.5
0.7
0.7
4
4
4
—
2
—
—
1.0 5.9
38/50 104/120
—
2
—
—
1.0 5.9
—
2
—
—
96/ 94† 110/110†
107/106† 125/125†
104/101† 125/110†
115/113† 125/125†
1.0 5.9
56/75† 156/180
—
2
—
—
1.0 5.9
—
2
—
—
45
51
49
55
47
55
51
59
70
77
74
82
100
107
104
112
39
45
42
48
39
45
42
49
65
73
69
77
83
90
86
94
50
60
5.0
7.5
5.0
7.5
5.0
7.5
5.0
7.5
5.0
7.5
5.0
7.5
5.0
7.5
5.0
7.5
7.6
11.0
7.6
1.0 3.1
60
—
25
50
75
—
25
48
78
—
30
60
90
—
24
46
75
—
2
—
—
50
60
1.0 3.1
60
60
—
2
—
—
50
60
50
60
1.0 3.1
—
2
—
—
60
60
11.0
7.6
1.0 3.1
60
60
1
024
460
414 506 10.7
90.0 10.7
90.0 10.7
90.0 4.0
—
2
—
—
80
80
1.0 3.1
80
90
—
2
—
—
80
90
90
90
11.0
7.6
1.0 3.1
—
2
—
—
110
125
125
125
45
125
1.0 3.1
125
—
2
—
—
125
11.0
6.1
1.0 3.1
125
—
2
—
—
45
50
1.0 3.1
50
—
2
—
—
50
50
9.0
1.0 3.1
50
60
—
2
—
—
45
45
6.1
1.0 3.1
50
50
—
2
—
2
—
—
50
50
9.0
1.0 3.1
—
50
70
60
60
1
575
518 633
9.3
73.0
9.3
73.0
9.3
73.0 4.0
—
6.1
1.0 3.1
80
70
—
2
—
—
70
70
9.0
1.0 3.1
80
80
—
2
—
2
—
—
90
100
6.1
1.0 3.1
—
100
100
100
110
100
—
9.0
1.0 3.1
110
ELECTRIC HEAT BRANCH CIRCUIT FOR 208/240-V 75-kW ELECTRIC HEAT
COMPRESSOR
No. 2
VOLTAGE
RANGE
ELECTRIC
HEAT
POWER
POWER
SUPPLY
DISCONNECT
SIZE
OFM
IFM
UNIT
SIZE
NOMINAL
VOLTAGE
EXHAUST
No. 1
No. 3
FLA
(ea)
FLA
(ea)
50HG (3 Ph, 60 Hz)
Min Max RLA LRA RLA LRA RLA LRA Qty Hp
kW
FLA
Hp FLA Qty Hp
MCA
MOCP*
FLA
024
208/240
187 253
NA
NA
NA
NA
NA
NA
NA NA
NA
56/75 156/180 NA NA NA NA
NA
156/180 175/200
200/225
FEEDER CIRCUIT FOR 208/230-V UNIT WITH 75-kW ELECTRIC HEAT
COMPRESSOR
No. 2
VOLTAGE
RANGE
ELECTRIC
HEAT
POWER
POWER
SUPPLY
DISCONNECT
SIZE
OFM
IFM
FLA
5.0 16.7/15.2
7.5 24.2/22
UNIT
SIZE
NOMINAL
VOLTAGE
EXHAUST
No. 1
No. 3
FLA
(ea)
FLA
(ea)
50HG (3 Ph, 60 Hz)
Min Max RLA LRA RLA LRA RLA LRA Qty Hp
kW
FLA
Hp
Qty Hp
MCA
MOCP*
FLA
—
2
—
—
177/199 200/225
200/225
225/250
225/250
225/250
1.0 5.9 192/214 200/225
186/208 200/225
1.0 5.9 201/222 225/225
1
024
208/230
187 253 22.4 184.0 22.4 184.0 22.4 184.0 4.0
/
4
1.5 56/75 156/180
—
2
—
—
See Legend and Notes on page 10.
13
Table 2A — Electrical Data (Units Without Optional Convenience Outlet) (cont)
COMPRESSOR
No. 2
VOLTAGE
RANGE
ELECTRIC
HEAT
POWER
POWER
SUPPLY
DISCONNECT
SIZE
OFM
IFM
FLA
UNIT
SIZE
NOMINAL
VOLTAGE
EXHAUST
No. 1
No. 3
FLA
(ea)
FLA
50HG (3 Ph, 60 Hz)
Min Max RLA LRA RLA LRA RLA LRA Qty Hp
kW
FLA
Hp
Qty Hp
MCA
MOCP*
FLA
(ea)
—
2
—
—
139/137
151/149
146/143
158/155
139/137
151/149
146/143
158/155
160/148
175/162
169/155
183/170
175/175
175/175
175/175
200/200
175/175
175/175
175/175
200/200
175/175
200/175
175/175
200/200
150/150
175/175
175/175
175/175
150/150
175/175
175/175
175/175
150/175
175/200
175/175
175/200
150/150†
175/175†
175/175†
175/175†
70
7.5 24.2/22.0
10.0 30.8/28.0
7.5 24.2/22.0
10.0 30.8/28.0
7.5 24.2/22.0
10.0 30.8/28.0
7.5 24.2/22.0
10.0 30.8/28.0
1.0 5.9
—
—
—
2
—
—
1.0 5.9
—
2
—
—
1.0 5.9
19/25
52/ 60
—
2
—
—
1.0 5.9
1
208/230
187 253 47.1 245.0 47.1 245.0
414 506 19.6 125.0 19.6 125.0
518 633 15.8 100.0 15.8 100.0
—
—
—
—
—
—
6.0
6.0
6.0
/
/
/
1.5
0.7
0.7
4
4
4
—
2
—
—
1.0 5.9
38/50 104/120
—
2
—
—
1.0 5.9
—
2
—
—
139/137† 175/175†
151/149† 175/175†
146/143† 175/175†
158/155† 200/200†
1.0 5.9
56/75† 156/180
—
2
—
—
1.0 5.9
—
2
—
—
59
66
62
69
59
66
62
69
74
82
78
85
104
112
108
115
49
55
51
57
49
55
51
57
69
77
71
79
86
94
89
97
70
80
7.5
10.0
7.5
11.0
14.0
11.0
14.0
11.0
14.0
11.0
14.0
9.0
1.0 3.1
70
—
25
50
75
—
25
48
78
—
30
60
90
—
24
46
75
—
2
—
—
80
70
1.0 3.1
80
80
—
2
—
—
70
80
70
70
1.0 3.1
—
2
—
—
80
70
10.0
7.5
1.0 3.1
80
80
1
028
460
—
2
—
—
80
90
1.0 3.1
90
90
—
2
—
—
90
90
90
100
10.0
7.5
1.0 3.1
—
2
—
—
125
125
125
125
60
125
1.0 3.1
125
—
2
—
—
125
10.0
7.5
1.0 3.1
150
—
2
—
—
60
60
1.0 3.1
70
—
2
—
—
60
60
10.0
7.5
11.0
9.0
1.0 3.1
70
70
—
2
—
—
60
60
1.0 3.1
70
60
—
2
—
2
—
—
60
60
10.0
7.5
11.0
9.0
1.0 3.1
—
70
70
70
70
1
575
—
1.0 3.1
80
80
—
2
—
—
80
70
10.0
7.5
11.0
9.0
1.0 3.1
80
80
—
2
—
2
—
—
100
100
100
100
100
1.0 3.1
—
110
100
—
10.0
11.0
1.0 3.1
110
ELECTRIC HEAT BRANCH CIRCUIT FOR 208/240-V 75-kW ELECTRIC HEAT
COMPRESSOR
No. 2
VOLTAGE
RANGE
ELECTRIC
HEAT
POWER
POWER
SUPPLY
DISCONNECT
SIZE
OFM
IFM
UNIT
SIZE
NOMINAL
VOLTAGE
EXHAUST
No. 1
No. 3
FLA
(ea)
FLA
(ea)
50HG (3 Ph, 60 Hz)
Min Max RLA LRA RLA LRA RLA LRA Qty Hp
kW
FLA
Hp FLA Qty Hp
MCA
MOCP*
FLA
028
208/240
187 253
NA
NA
NA
NA
NA
NA
NA NA
NA
56/75 156/180 NA NA NA NA
NA
156/180 175/200
200/225
FEEDER CIRCUIT FOR 208/230-V UNIT WITH 75-kW ELECTRIC HEAT
COMPRESSOR
No. 2
VOLTAGE
RANGE
ELECTRIC
HEAT
POWER
POWER
SUPPLY
DISCONNECT
SIZE
OFM
IFM
FLA
UNIT
SIZE
NOMINAL
VOLTAGE
EXHAUST
No. 1
No. 3
FLA
(ea)
FLA
50HG (3 Ph, 60 Hz)
Min Max RLA LRA RLA LRA RLA LRA Qty Hp
kW
FLA
Hp
Qty Hp
MCA
MOCP*
FLA
(ea)
—
2
—
—
186/208 200/225
225/250
225/250
225/250
250/300
7.5 24.2/22.0
10.0 30.8/28.0
1.0 5.9 201/222 225/225
195/215 225/225
1.0 5.9 209/230 225/250
1
028
208/230
187 253 47.1 245.0 47.1 245.0
—
—
6.0
/
1.5 56/75 156/180
4
—
2
—
—
See Legend and Notes on page 10.
14
Table 2B — Electrical Data (Units With Optional Convenience Outlet)
COMPRESSOR
No. 2
VOLTAGE
RANGE
ELECTRIC
HEAT
POWER
POWER
SUPPLY
DISCONNECT
SIZE
OFM
IFM
FLA
UNIT
SIZE
NOMINAL
VOLTAGE
EXHAUST
No. 1
No. 3
FLA
(ea)
FLA
50HG (3 Ph, 60 Hz)
Min Max RLA LRA RLA LRA RLA LRA Qty Hp
kW
FLA
Hp
Qty Hp
MCA
MOCP*
FLA
(ea)
—
2
—
—
65/ 64
77/ 76
71/ 69
80/ 80
90/ 90
90/ 80
70/ 70
80/ 80
80/ 70
90/ 90
70/ 70
80/ 80
80/ 70
90/ 90
80/ 90
90/100
80/ 90
100/110
150/150
150/175
150/175
175/175
35
3.7 10.6/ 9.6
5.0 16.7/15.2
3.7 10.6/ 9.6
5.0 16.7/15.2
3.7 10.6/ 9.6
5.0 16.7/15.2
3.7 10.6/ 9.6
5.0 16.7/15.2
1.0 5.9
—
—
—
2
—
—
1.0 5.9
83/ 81 100/100
—
2
—
—
65/ 66
77/ 81
71/ 73
80/ 80
90/ 90
90/ 80
1.0 5.9
12/16
19/25
33/ 38
52/ 60
—
2
—
—
1.0 5.9
83/ 88 100/100
85/ 93 90/100
1
208/230
187 253 19.2 146.0 19.2 146.0
—
—
—
—
—
—
4.0
4.0
4.0
/
/
/
1.5
0.7
0.7
4
4
4
—
2
—
—
1.0 5.9
99/108 100/110
92/100 100/110
107/115 110/125
150/138 150/150
164/153 175/175
157/145 175/150
172/160 175/175
—
2
—
—
1.0 5.9
—
2
—
—
1.0 5.9
38/50 104/120
—
2
—
—
1.0 5.9
—
2
—
—
32
38
35
41
32
40
36
44
47
55
51
59
70
78
73
81
27
33
29
36
27
35
30
38
39
46
41
49
66
74
69
77
40
45
40
50
40
45
40
50
50
60
60
60
80
80
80
90
30
40
35
40
30
40
35
40
40
50
45
50
70
80
70
80
3.7
5.0
3.7
5.0
3.7
5.0
3.7
5.0
3.0
5.0
3.0
5.0
3.0
5.0
3.0
5.0
4.8
7.6
4.8
7.6
4.8
7.6
4.8
7.6
3.9
6.1
3.9
6.1
3.9
6.1
3.9
6.1
1.0 3.1
40
—
15
25
50
—
16
25
48
—
18
30
60
—
15
24
46
—
2
—
—
35
1.0 3.1
45
—
2
—
—
35
40
1.0 3.1
—
2
—
—
35
1.0 3.1
45
1
014
460
414 506
9.5
73.0
9.5
73.0
—
2
—
—
45
1.0 3.1
50
—
2
—
—
45
60
1.0 3.1
—
2
—
—
80
1.0 3.1
90
—
2
—
—
80
1.0 3.1
90
—
2
—
—
30
35
1.0 3.1
—
2
—
—
30
1.0 3.1
35
—
2
—
—
30
1.0 3.1
35
—
2
—
2
—
—
30
1.0 3.1
—
35
35
1
575
518 633
7.6
58.4
7.6
58.4
—
1.0 3.1
40
—
2
—
—
35
1.0 3.1
45
—
2
—
2
—
—
60
1.0 3.1
—
70
60
—
1.0 3.1
70
See Legend and Notes on page 10.
15
Table 2B — Electrical Data (Units With Optional Convenience Outlet) (cont)
COMPRESSOR
No. 2
VOLTAGE
RANGE
ELECTRIC
HEAT
POWER
POWER
SUPPLY
DISCONNECT
SIZE
OFM
IFM
FLA
UNIT
SIZE
NOMINAL
VOLTAGE
EXHAUST
No. 1
No. 3
FLA
(ea)
FLA
50HG (3 Ph, 60 Hz)
Min Max RLA LRA RLA LRA RLA LRA Qty Hp
kW
FLA
Hp
Qty Hp
MCA
MOCP*
FLA
(ea)
—
2
—
—
76/ 75
88/ 87
82/ 80
94/ 92
85/ 93
99/108
92/100
107/115
150/138
164/153
157/145
172/160
76/ 75†
90/ 90
100/100
90/ 90
110/100
90/100
80/ 80
100/ 90
90/ 90
100/100
80/ 90
100/100
90/ 90
100/110
150/150
150/175
150/175
175/175
80/ 80†
100/ 90†
90/ 90†
100/100†
40
3.7 10.6/ 9.6
5.0 16.7/15.2
3.7 10.6/ 9.6
5.0 16.7/15.2
3.7 10.6/ 9.6
5.0 16.7/15.2
3.7 10.6/ 9.6
5.0 16.7/15.2
1.0 5.9
—
—
—
2
—
—
1.0 5.9
—
2
—
—
1.0 5.9
100/110
100/110
110/125
150/150
175/175
175/150
175/175
90/ 90†
19/25
52/ 60
—
2
—
—
1.0 5.9
1
208/230
187 253 16.7 130.0 16.7 130.0 16.7 130.0 4.0
/
/
/
1.5
0.7
0.7
4
4
4
—
2
—
—
1.0 5.9
38/50 104/120
—
2
—
—
1.0 5.9
—
2
—
—
1.0 5.9
88/ 87† 100/100†
82/ 80† 90/ 90†
94/ 92† 110/100†
56/75† 156/180
—
2
—
—
1.0 5.9
—
2
—
—
40
46
43
49
47
55
51
59
70
78
73
81
100
108
103
111
32
39
35
41
39
46
41
49
66
74
69
77
84
91
86
94
45
50
3.7
5.0
3.7
5.0
3.7
5.0
3.7
5.0
3.0
5.0
3.0
5.0
3.0
5.0
3.0
5.0
4.8
7.6
4.8
7.6
4.8
7.6
4.8
7.6
3.9
6.1
3.9
6.1
3.9
6.1
3.9
6.1
1.0 3.1
50
—
25
50
75
—
25
48
78
—
30
60
90
—
24
46
75
—
2
—
—
50
45
1.0 3.1
50
60
—
2
—
—
50
60
45
50
1.0 3.1
—
2
—
—
60
45
1.0 3.1
60
60
1
016
460
414 506
9.0
70.0
9.0
70.0
9.0
70.0 4.0
—
2
—
—
80
80
1.0 3.1
80
90
—
2
—
—
80
90
80
90
1.0 3.1
—
2
—
—
110
125
125
125
35
110
1.0 3.1
125
—
2
—
—
125
1.0 3.1
125
—
2
—
—
35
40
1.0 3.1
45
—
2
—
—
40
35
1.0 3.1
50
45
—
2
—
—
40
35
1.0 3.1
50
40
—
2
—
2
—
—
45
35
1.0 3.1
—
50
70
45
60
1
575
518 633
7.0
55.0
7.0
55.0
7.0
55.0 4.0
—
1.0 3.1
80
70
—
2
—
—
70
60
1.0 3.1
80
70
—
2
—
2
—
—
90
100
1.0 3.1
—
100
100
100
100
100
—
1.0 3.1
110
ELECTRIC HEAT BRANCH CIRCUIT FOR 208/240-V 75-kW ELECTRIC HEAT
COMPRESSOR
No. 2
VOLTAGE
RANGE
ELECTRIC
HEAT
POWER
POWER
SUPPLY
DISCONNECT
SIZE
OFM
IFM
UNIT
SIZE
NOMINAL
VOLTAGE
EXHAUST
No. 1
No. 3
FLA
(ea)
FLA
(ea)
50HG (3 Ph, 60 Hz)
Min Max RLA LRA RLA LRA RLA LRA Qty Hp
kW
FLA
Hp FLA Qty Hp
MCA
MOCP*
FLA
016
208/240
187 253
NA
NA
NA
NA
NA
NA
NA NA
NA
56/75 156/180 NA NA NA NA
NA
156/180 175/200
200/225
FEEDER CIRCUIT FOR 208/230-V UNIT WITH 75-kW ELECTRIC HEAT
COMPRESSOR
No. 2
VOLTAGE
RANGE
ELECTRIC
HEAT
POWER
POWER
SUPPLY
DISCONNECT
SIZE
OFM
IFM
FLA
UNIT
SIZE
NOMINAL
VOLTAGE
EXHAUST
No. 1
No. 3
FLA
(ea)
FLA
50HG (3 Ph, 60 Hz)
Min Max RLA LRA RLA LRA RLA LRA Qty Hp
kW
FLA
Hp
Qty Hp
MCA
MOCP*
FLA
(ea)
—
2
—
—
176/198 200/225
200/225
225/250
200/225
225/250
3.7 10.6/ 9.6
5.0 16.7/15.2
1.0 5.9 190/213 200/225
183/205 200/225
1.0 5.9 198/220 200/225
016
208/230
187 253 16.7 130.0 16.7 130.0 16.7 130.0 4.0 1/4 1.5 56/75 156/180
—
2
—
—
See Legend and Notes on page 10.
16
Table 2B — Electrical Data (Units With Optional Convenience Outlet) (cont)
COMPRESSOR
No. 2
VOLTAGE
RANGE
ELECTRIC
HEAT
POWER
POWER
SUPPLY
DISCONNECT
SIZE
OFM
IFM
FLA
UNIT
SIZE
NOMINAL
VOLTAGE
EXHAUST
No. 1
No. 3
FLA
(ea)
FLA
50HG (3 Ph, 60 Hz)
Min Max RLA LRA RLA LRA RLA LRA Qty Hp
kW
FLA
Hp
Qty Hp
MCA
MOCP*
FLA
(ea)
—
2
—
—
89/ 88
101/ 99
97/ 94
109/106
92/100
110/110
110/110
110/110
125/125
110/110
110/125
110/110
125/125
175/150
175/175
175/175
200/175
100/ 90
110/110
100/100
125/110
100/ 90
110/110
100/100
125/110
150/175
175/175
150/175
175/200
100/ 90†
110/110†
100/100†
125/110†
45
5.0 16.7/15.2
7.5 24.2/22.0
5.0 16.7/15.2
7.5 24.2/22.0
5.0 16.7/15.2
7.5 24.2/22.0
5.0 16.7/15.2
7.5 24.2/22.0
1.0 5.9
—
—
—
2
—
—
1.0 5.9
—
2
—
—
1.0 5.9
107/115
102/109
116/124
157/145
172/160
167/154
181/169
19/25
52/ 60
—
2
—
—
1.0 5.9
1
208/230
187 253 16.7 130.0 16.7 130.0 22.4 184.0 4.0
/
1.5
0.7
0.7
4
—
2
—
—
1.0 5.9
38/50 104/120
—
2
—
—
1.0 5.9
—
2
—
—
89/ 88† 110/110†
101/ 99† 110/110†
97/ 94† 110/110†
109/106† 125/125†
1.0 5.9
56/75† 156/180
—
2
—
—
1.0 5.9
—
2
—
—
45
51
48
54
51
59
55
63
73
81
78
85
103
111
108
115
38
44
40
47
41
49
45
53
69
77
73
80
86
94
90
98
50
60
5.0
7.5
5.0
7.5
5.0
7.5
5.0
7.5
5.0
7.5
5.0
7.5
5.0
7.5
5.0
7.5
7.6
11.0
7.6
1.0 3.1
60
—
25
50
75
—
25
48
78
—
30
60
90
—
24
46
75
—
2
—
—
50
50
1.0 3.1
60
60
—
2
—
—
60
60
45
60
1.0 3.1
—
2
—
—
60
50
11.0
7.6
1.0 3.1
70
60
1
020
460
414 506
9.0 70.0
9.0
70.0 10.7
90.0 4.0
/
4
—
2
—
—
80
80
1.0 3.1
90
90
—
2
—
—
80
90
90
90
11.0
7.6
1.0 3.1
—
2
—
—
125
125
125
125
45
125
1.0 3.1
125
—
2
—
—
125
11.0
6.1
1.0 3.1
125
—
2
—
—
40
45
1.0 3.1
50
—
2
—
—
45
45
9.0
1.0 3.1
50
50
—
2
—
—
45
40
6.1
1.0 3.1
50
45
—
2
—
2
—
—
45
45
9.0
1.0 3.1
—
60
70
50
60
1
575
518 633
7.0 55.0
7.0
55.0
9.3
73.0 4.0
/
4
—
6.1
1.0 3.1
80
70
—
2
—
—
80
70
9.0
1.0 3.1
90
80
—
2
—
2
—
—
100
100
100
100
100
6.1
1.0 3.1
—
110
100
—
9.0
1.0 3.1
110
ELECTRIC HEAT BRANCH CIRCUIT FOR 208/240-V 75-kW ELECTRIC HEAT
COMPRESSOR
No. 2
VOLTAGE
RANGE
ELECTRIC
HEAT
POWER
POWER
SUPPLY
DISCONNECT
SIZE
OFM
IFM
UNIT
SIZE
NOMINAL
VOLTAGE
EXHAUST
No. 1
No. 3
FLA
(ea)
FLA
(ea)
50HG (3 Ph, 60 Hz)
Min Max RLA LRA RLA LRA RLA LRA Qty Hp
kW
FLA
Hp FLA Qty Hp
MCA
MOCP*
FLA
020
208/240
187 253
NA
NA
NA
NA
NA
NA
NA NA
NA
56/75 156/180 NA NA NA NA
NA
156/180 175/200
200/225
FEEDER CIRCUIT FOR 208/230-V UNIT WITH 75-kW ELECTRIC HEAT
COMPRESSOR
No. 2
VOLTAGE
RANGE
ELECTRIC
HEAT
POWER
POWER
SUPPLY
DISCONNECT
SIZE
OFM
IFM
FLA
UNIT
SIZE
NOMINAL
VOLTAGE
EXHAUST
No. 1
No. 3
FLA
(ea)
FLA
50HG (3 Ph, 60 Hz)
Min Max RLA LRA RLA LRA RLA LRA Qty Hp
kW
FLA
Hp
Qty Hp
MCA
MOCP*
FLA
(ea)
—
2
—
—
183/205 200/225
200/225
225/250
225/250
225/250
5.0 16.7/15.2
7.5 24.2/22.0
1.0 5.9 198/220 200/225
193/214 200/225
1.0 5.9 207/229 225/250
1
020
208/230
187 253 16.7 130.0 16.7 130.0 22.4 184.0 4.0
/
4
1.5 56/75 156/180
—
2
—
—
See Legend and Notes on page 10.
17
Table 2B — Electrical Data (Units With Optional Convenience Outlet) (cont)
COMPRESSOR
No. 2
VOLTAGE
RANGE
ELECTRIC
HEAT
POWER
POWER
SUPPLY
DISCONNECT
SIZE
OFM
IFM
FLA
UNIT
SIZE
NOMINAL
VOLTAGE
EXHAUST
No. 1
No. 3
FLA
(ea)
FLA
50HG (3 Ph, 60 Hz)
Min Max RLA LRA RLA LRA RLA LRA Qty Hp
kW
FLA
Hp
Qty Hp
MCA
MOCP*
FLA
(ea)
—
2
—
—
101/ 99
112/111
109/106
120/118
101/100
112/115
109/109
120/124
157/145
172/160
167/154
181/169
110/110
125/125
125/125
125/125
110/110
125/125
125/125
125/125
175/150
175/175
175/175
200/175
110/110
125/125
125/110
150/125
110/110
125/125
125/110
150/125
150/175
175/175
150/175
175/200
110/110†
125/125†
125/110†
150/125†
50
5.0 16.7/15.2
7.5 24.2/22.0
5.0 16.7/15.2
7.5 24.2/22.0
5.0 16.7/15.2
7.5 24.2/22.0
5.0 16.7/15.2
7.5 24.2/22.0
1.0 5.9
—
—
—
2
—
—
1.0 5.9
—
2
—
—
1.0 5.9
19/25
52/ 60
—
2
—
—
1.0 5.9
1
208/230
187 253 22.4 184.0 22.4 184.0 22.4 184.0 4.0
/
/
/
1.5
0.7
0.7
4
4
4
—
2
—
—
1.0 5.9
38/50 104/120
—
2
—
—
1.0 5.9
—
2
—
—
101/ 99† 110/110†
112/111† 125/125†
109/106† 125/125†
120/118† 125/125†
1.0 5.9
56/75† 156/180
—
2
—
—
1.0 5.9
—
2
—
—
48
54
52
58
51
59
55
63
73
81
78
85
103
111
108
115
42
48
45
51
42
49
45
53
69
77
73
80
86
94
90
98
50
60
5.0
7.5
5.0
7.5
5.0
7.5
5.0
7.5
5.0
7.5
5.0
7.5
5.0
7.5
5.0
7.5
7.6
11.0
7.6
1.0 3.1
60
—
25
50
75
—
25
48
78
—
30
60
90
—
24
46
75
—
2
—
—
60
60
1.0 3.1
60
60
—
2
—
—
60
60
50
60
1.0 3.1
—
2
—
—
60
60
11.0
7.6
1.0 3.1
70
60
1
024
460
414 506 10.7
90.0 10.7
90.0 10.7
90.0 4.0
—
2
—
—
80
80
1.0 3.1
90
90
—
2
—
—
80
90
90
90
11.0
7.6
1.0 3.1
—
2
—
—
125
125
125
125
50
125
1.0 3.1
125
—
2
—
—
125
11.0
6.1
1.0 3.1
125
—
2
—
—
45
50
1.0 3.1
50
—
2
—
—
50
50
9.0
1.0 3.1
60
60
—
2
—
—
50
45
6.1
1.0 3.1
50
50
—
2
—
2
—
—
50
50
9.0
1.0 3.1
—
60
70
60
60
1
575
518 633
9.3
73.0
9.3
73.0
9.3
73.0 4.0
—
6.1
1.0 3.1
80
70
—
2
—
—
80
70
9.0
1.0 3.1
90
80
—
2
—
2
—
—
100
100
100
100
100
6.1
1.0 3.1
—
110
100
—
9.0
1.0 3.1
110
ELECTRIC HEAT BRANCH CIRCUIT FOR 208/240-V 75-kW ELECTRIC HEAT
COMPRESSOR
No. 2
VOLTAGE
RANGE
ELECTRIC
HEAT
POWER
POWER
SUPPLY
DISCONNECT
SIZE
OFM
IFM
UNIT
SIZE
NOMINAL
VOLTAGE
EXHAUST
No. 1
No. 3
FLA
(ea)
FLA
(ea)
50HG (3 Ph, 60 Hz)
Min Max RLA LRA RLA LRA RLA LRA Qty Hp
kW
FLA
Hp FLA Qty Hp
MCA
MOCP*
FLA
024
208/240
187 253
NA
NA
NA
NA
NA
NA
NA NA
NA
56/75 156/180 NA NA NA NA
NA
156/180 175/200
200/225
FEEDER CIRCUIT FOR 208/230-V UNIT WITH 75-kW ELECTRIC HEAT
COMPRESSOR
No. 2
VOLTAGE
RANGE
ELECTRIC
HEAT
POWER
POWER
SUPPLY
DISCONNECT
SIZE
OFM
IFM
FLA
UNIT
SIZE
NOMINAL
VOLTAGE
EXHAUST
No. 1
No. 3
FLA
(ea)
FLA
50HG (3 Ph, 60 Hz)
Min Max RLA LRA RLA LRA RLA LRA Qty Hp
kW
FLA
Hp
Qty Hp
MCA
MOCP*
FLA
(ea)
—
2
—
—
183/205 200/225
200/225
225/250
225/250
225/250
5.0 16.7/15.2
7.5 24.2/22.0
1.0 5.9 198/220 200/225
193/214 200/225
1.0 5.9 207/229 225/250
1
024
208/230
187 253 22.4 184.0 22.4 184.0 22.4 184.0 4.0
/
4
1.5 56/75 156/180
—
2
—
—
See Legend and Notes on page 10.
18
Table 2B — Electrical Data (Units With Optional Convenience Outlet) (cont)
COMPRESSOR
No. 2
VOLTAGE
RANGE
ELECTRIC
HEAT
POWER
POWER
SUPPLY
DISCONNECT
SIZE
OFM
IFM
FLA
UNIT
SIZE
NOMINAL
VOLTAGE
EXHAUST
No. 1
No. 3
FLA
(ea)
FLA
50HG (3 Ph, 60 Hz)
Min Max RLA LRA RLA LRA RLA LRA Qty Hp
kW
FLA
Hp
Qty Hp
MCA
MOCP*
FLA
(ea)
—
2
—
—
144/142
156/154
151/148
163/160
144/142
156/154
151/148
163/160
167/154
181/169
175/161
190/176
175/175
200/200
175/175
200/200
175/175
200/200
175/175
200/200
175/175
200/200
175/175
200/200
150/150
175/175
175/175
175/175
150/150
175/175
175/175
175/175
150/175
175/200
175/175
175/200
150/150†
175/175†
175/175†
175/175†
70
7.5 24.2/22.0
10.0 30.8/28.0
7.5 24.2/22.0
10.0 30.8/28.0
7.5 24.2/22.0
10.0 30.8/28.0
7.5 24.2/22.0
10.0 30.8/28.0
1.0 5.9
—
—
—
2
—
—
1.0 5.9
—
2
—
—
1.0 5.9
19/25
52/ 60
—
2
—
—
1.0 5.9
1
208/230
187 253 47.1 245.0 47.1 245.0
414 506 19.6 125.0 19.6 125.0
518 633 15.8 100.0 15.8 100.0
—
—
—
—
—
—
6.0
6.0
6.0
/
/
/
1.5
0.7
0.7
4
4
4
—
2
—
—
1.0 5.9
38/50 104/120
—
2
—
—
1.0 5.9
—
2
—
—
144/142† 175/175†
156/154† 200/200†
151/148† 175/175†
163/160† 200/200†
1.0 5.9
56/75† 156/180
—
2
—
—
1.0 5.9
—
2
—
—
62
69
65
72
62
69
65
72
78
85
81
89
108
115
111
119
52
58
54
60
52
58
54
60
73
80
75
83
90
98
93
100
80
80
7.5
10.0
7.5
11.0
14.0
11.0
14.0
11.0
14.0
11.0
14.0
9.0
1.0 3.1
70
—
25
50
75
—
25
48
78
—
30
60
90
—
24
46
75
—
2
—
—
80
70
1.0 3.1
90
80
—
2
—
—
80
80
70
70
1.0 3.1
—
2
—
—
80
70
10.0
7.5
1.0 3.1
90
80
1
028
460
—
2
—
—
80
90
1.0 3.1
90
90
—
2
—
—
90
90
100
10.0
7.5
1.0 3.1
100
125
125
125
125
60
—
2
—
—
125
1.0 3.1
125
—
2
—
—
125
10.0
7.5
1.0 3.1
150
—
2
—
—
60
60
1.0 3.1
70
—
2
—
—
60
60
10.0
7.5
11.0
9.0
1.0 3.1
70
70
—
2
—
—
60
60
1.0 3.1
70
60
—
2
—
2
—
—
60
60
10.0
7.5
11.0
9.0
1.0 3.1
—
70
80
70
70
1
575
—
1.0 3.1
90
80
—
2
—
—
80
70
10.0
7.5
11.0
9.0
1.0 3.1
90
80
—
2
—
2
—
—
100
100
100
110
100
1.0 3.1
—
110
100
—
10.0
11.0
1.0 3.1
110
ELECTRIC HEAT BRANCH CIRCUIT FOR 208/240-V 75-kW ELECTRIC HEAT
COMPRESSOR
No. 2
VOLTAGE
RANGE
ELECTRIC
HEAT
POWER
POWER
SUPPLY
DISCONNECT
SIZE
OFM
IFM
UNIT
SIZE
NOMINAL
VOLTAGE
EXHAUST
No. 1
No. 3
FLA
(ea)
FLA
(ea)
50HG (3 Ph, 60 Hz)
Min Max RLA LRA RLA LRA RLA LRA Qty Hp
kW
FLA
Hp FLA Qty Hp
MCA
MOCP*
FLA
028
208/240
187 253
NA
NA
NA
NA
NA
NA
NA NA
NA
56/75 156/180 NA NA NA NA
NA
156/180 175/200
200/225
FEEDER CIRCUIT FOR 208/230-V UNIT WITH 75-kW ELECTRIC HEAT
COMPRESSOR
No. 2
VOLTAGE
RANGE
ELECTRIC
HEAT
POWER
POWER
SUPPLY
DISCONNECT
SIZE
OFM
IFM
FLA
UNIT
SIZE
NOMINAL
VOLTAGE
EXHAUST
No. 1
No. 3
FLA
(ea)
FLA
50HG (3 Ph, 60 Hz)
Min Max RLA LRA RLA LRA RLA LRA Qty Hp
kW
FLA
Hp
Qty Hp
MCA
MOCP*
FLA
(ea)
—
2
—
—
193/214 200/225
225/250
225/250
225/250
250/300
7.5 24.2/22.0
10.0 30.8/28.0
1.0 5.9 207/229 225/250
201/221 225/225
1.0 5.9 216/236 225/250
1
028
208/230
187 253 47.1 245.0 47.1 245.0
—
—
6.0
/
1.5 56/75 156/180
4
—
2
—
—
See Legend and Notes on page 10.
19
3. Remove the bracket holding the bottom half of the hood
in the shipping position. Remove the hood bottom half
and filters (or manual dampers on units so equipped)
from outdoor section.
NOTE: On units without economizers, the components
are attached to the unit basepan. To access the compo-
nents, remove the panel below the outdoor air intake
section.
4. Remove inner filter track from shipping position in out-
door section. Position inner filter track so the track is fac-
ing outward from the unit. Install the filter track with
4 screws provided.
LEGEND
5. Apply seal strip (provided) to back flange of both hood
sides where hood side connects to the unit back panel.
See Fig. 16.
6. Apply seal strip (provided) to top flange of both hood
sides where hood sides connect to the hood top panels.
See Fig. 16.
7. Install hood sides to the back panels using the screws from
Step 2. The sloped flanges point outward. The drip edges
of the side panels should face outward as well. The filter
guides should face inward to hold the filters in place. See
Fig. 16.
8. Apply seal strip along the entire length of the bottom
flange of the hood top. See Fig. 16.
EQUIP — Equipment
GND — Ground
NEC
TB
— National Electrical Code
— Terminal Board
NOTE: The maximum wire size for TB1 is 2/0.
Fig. 12 — Field Power Wiring Connections
THERMOSTAT ASSEMBLY
REMOVABLE JUMPER
L
RH
RC
Y1
Y2
W1
W2
G
C
X
R
1
Y1
2
Y2
3
W1
4
W2
5
G
6
C
7
X
8
9. Install the bottom part of the hood top using 4 screws pro-
vided. See Fig. 16.
TB4
10. Remove the packaging from filters (3) and install into the
filter tracks. Slide the filters to the sides then place the last
filter into the center of the filter track.
Fig. 13 — Field Control Thermostat Wiring
NOTE: For units with manual dampers, replace the end filters
with the manual dampers. Install the filter in the center
between the manual dampers.
T-55 SPT
T1 T2
T-56 SPT
COM
TH
SN
11. Install the filter retainer track along the bottom edge of the
outdoor air hood using 4 screws provided. See Fig. 16.
12. Install top section of the outdoor air hood using 9 screws
provided. See Fig. 16. See Fig. 17 for a picture of the
assembled outdoor air hood.
TB3
7
8
9
NOTE: For filter removal, remove the four screws holding the
filter retainer. The filters can then be removed, cleaned, or
replaced. Install the filters by reversing the procedure.
SPT — Space Temperature Sensor
MANUAL DAMPER ASSEMBLY — For units equipped
with manual dampers, the assembly process is similar to the out-
door air hood for units with economizers. There are two slide
dampers shipped with the unit to allow for manual setting of the
outside air volume. When assembling the hood, place one of the
manual slide dampers in each of the end positions and the re-
maining filter in the center position. The manual dampers can
then be moved to the appropriate position and then locked into
place using the screws mounted in the adjustment slots. See
Fig. 18.
Fig. 14 — Field Control Space
Temperature Sensor Wiring
Set heat anticipator settings as shown inTable 3.
Table 3 — Heat Anticipator Settings
STAGE 1
(W1) ON
Voltage
STAGES 1 AND 2
(W1 and W2) ON
Voltage
UNIT SIZE ELECTRIC
50HG
HEAT (kW)
208/240 480 600 208/240 480 600
15
25
50
25
50
75
0.2
0.2
0.4
0.2
0.4
0.4
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.4
0.8
0.4
0.8
0.8
0.2
0.4
0.4
0.4
0.4
0.4
0.2
0.4
0.4
0.4
0.4
0.4
HOOD
SIDE
HOOD TOP
(BOTTOM HALF)
014
HOOD TOP
(TOP HALF)
HOOD
SIDE
016-028
Settings may be changed slightly to provide a greater degree
of comfort for a particular installation.
RETURN AIR
SECTION
Step 8 — Install Outdoor Air Hood — Perform the
following procedure to install the outdoor-air hood:
1. Remove blank panel from return end of unit (hood sec-
tion). Save the screws. See Fig. 15 for shipping location
of components.
2. Hood sides are fastened to sides of outdoor air opening.
Remove the hood sides and save the screws (3 each side).
Fig. 15 — Outdoor-Air Hood Compartment
Shipping Location
20
TOP HOOD
SECTION
ADD
SEAL
STRIP
SEAL
HOOD
SIDE
ADD
SEAL
STRIP
STRIP
LOCATION
INNER
FILTER
TRACK
BOTTOM
HOOD
SECTION
ADD
SEAL
STRIP
ADD
SEAL
STRIP
FILTER
GUIDE
FILTER
RETAINER
FILTER
GUIDE
FILTER
HOOD
SIDE
MANUAL
DAMPER
(IF EQUIPPED)
UNIT
BACK
PANEL
NOTE: Units with manual damper only use one filter.
Fig. 16 — Outdoor Air Hood Details
LOCKING SCREW
MOVEABLE DAMPER
AIR FILTER POSITION
MOVEABLE DAMPER
Fig. 17 — Outdoor Air Hood Assembled
Fig. 18 — Manual Damper Details
21
Step 9 — Position Optional Power Exhaust or
Barometric Relief Damper Hood — The optional
power exhaust or barometric relief dampers are shipped
assembled and tilted back into the unit for shipping. Brack-
ets and extra screws are shipped in shrink wrap around the
dampers.
BE SURE POWER IS SHUT OFF TO THE UNIT FROM
THE BUILDING POWER SUPPLY.
1. Open the control box access door.
1. Remove 9 screws holding each damper assembly in
place. See Fig. 19. Each damper assembly is secured with
3 screws on each side and 3 screws along the bottom.
Save screws.
2. Remove the small cover plate located on the unit corner
post near the control section.
3. Remove the inner control box cover. The handle and shaft
are located in a plastic bag at the bottom of the control
box.
4. Insert the square shaft into the disconnect with the pins
vertical. On the 100 amp disconnect the shaft is keyed
into the disconnect and can only be installed one way
with the pins vertical.
Be careful when tilting blower assembly. Hoods and blow-
ers are heavy and can cause injury if dropped.
2. Pivot the damper assembly outward until top edge of
damper assembly rests against inside wall of unit.
3. Secure each damper assembly to unit with 6 screws
across top (3 screws provided) and bottom (3 screws
from Step 1) of damper.
4. With screws saved from Step 1, install brackets on each
side of damper assembly. See Fig. 20.
5. Remove tape from damper blades.
5. Insert the handle through the corner post and onto the
shaft with the handle positioned so that “OFF” is on top.
6. Rotate the handle to the “ON” position to lock the pins
into the handle.
7. From the inside of the corner post, attach the handle
mounting screws to the handle. Slide the shaft fully into
the handle and tighten the set screws(s) on the disconnect
to lock the shaft. Tighten the screws that attach the handle
to the corner post.
8. Rotate the handle back to the “OFF” position.
9. Replace all panels and doors.
Step 10 — Non-Fused Disconnect — The handle
for the factory-installed non-fused disconnect is shipped inside
the unit to prevent the handle from damage during shipping.
Follow these steps to complete installation of the handle.
10. Restore power to unit.
Fig. 19 — Power Exhaust or Barometric Relief Damper Mounting Details
22
Step 11 — Install All Accessories — After all of
the factory-installed options have been adjusted, install all
field-installed accessories. Refer to the accessory installation
instructions included with each accessory. Consult the Carrier
Price Pages for accessory package numbers for particular
applications. The available field-installed accessories for the
Centurion units are:
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
economizer
power exhaust
barometric relief damper
14-in. roof curb
24-in. roof curb
electric heaters
enthalpy control
differential enthalpy control
plugged filter indicator
carbon dioxide detector
smoke detector
filter status switch
fan status switch
condenser hail guard
horizontal duct accessory
thermostats
two-position damper
Fig. 20 — Bracket and Hood Positioning
23
Copyright 2003 Carrier Corporation
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
PC 111 Catalog No. 535-00092 Printed in U.S.A. Form 50HG-7SI Pg 24 11-03 Replaces: 50HG-3SI
Book 1
4
Tab 1b 6b
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