INSTALLATION
MANUAL
MILLENNIUM™ ROOFTOP
25, 30 & 40 TON
MODELS: Z42
Z33
Z34
CONTENTS
See the following pages for a complete Table of Contents.
NOTES, CAUTIONS AND WARNINGS
Installer should pay particular attention to the words: NOTE,
CAUTION, and WARNING. Notes are intended to clarify or
make the installation easier. Cautions are given to prevent
equipment damage. Warnings are given to alert installer
that personal injury and/or equipment damage may result if
installation procedure is not handled properly.
ISO 9001
Certified Quality
Management System
CAUTION: READ ALL SAFETY GUIDES BEFORE YOU
BEGIN TO INSTALL YOUR UNIT.
SAVE THIS MANUAL
882108-YIM-B-1012
882108-YIM-B-1012
LIST OF FIGURES
Fig. #
Pg. #
Fig. #
Pg. #
2
TYPICAL RIGGING . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
29 HOT WATER COIL - 25 & 30 TON, 1 ROW,
30 HOT WATER COIL - 25 & 30 TON, 1 ROW,
31 HOT WATER COIL - 25 & 30 TON, 2 ROW,
32 HOT WATER COIL - 25 & 30 TON, 2 ROW,
18 ALTITUDE/TEMPERATURE CONVERSION
22 POWER EXHAUST - ONE FORWARD CURVE FAN
23 POWER EXHAUST - TWO FORWARD CURVED FANS
52 PRESSURE DROP DRY EVAPORATOR COIL VS
53 PRESSURE DROP DRY EVAPORATOR COIL VS
27 HOT WATER COIL - 25 & 30 TON, 1 ROW,
54 PRESSURE DROP DRY EVAPORATOR COIL VS
28 HOT WATER COIL - 25 & 30 TON, 1 ROW,
Johnson Controls Unitary Products
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882108-YIM-B-1012
LIST OF TABLES
Tbl. #
Pg. #
Tbl. #
Pg. #
36 POWER EXHAUST - ONE FORWARD CURVED
FAN 25 TON . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
37 POWER EXHAUST - TWO FORWARD CURVED
FANS - 30 & 40 TON . . . . . . . . . . . . . . . . . . . . . . . . . . 57
43 DRIVE ADJUSTMENT FOR POWER EXHAUST
- 25 TON . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
44 DRIVE ADJUSTMENT FOR POWER EXHAUST
- 30 & 40 TON . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
20 ELECTRICAL DATA 25 TON W/ELECTRIC HEAT
R-410A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
21 ELECTRICAL DATA 30 TON W/ELECTRIC HEAT
R-410A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
22 ELECTRICAL DATA 40 TON W/ELECTRIC HEAT
R-410A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
23 ELECTRICAL DATA 25 TON W/POWER EXHAUST
R-410A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
24 ELECTRICAL DATA 30 TON W/POWER EXHAUST
R-410A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
25 ELECTRICAL DATA 40 TON W/POWER EXHAUST
R-410A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
26 ELECTRICAL DATA 25 TON W/ELECTRIC HEAT
AND POWER EXHAUST R-410A . . . . . . . . . . . . . . . .34
57 STATIC RESISTANCE HOT WATER COIL
(25 & 30 TON) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
27 ELECTRICAL DATA 30 TON W/ELECTRIC HEAT
AND POWER EXHAUST R-410A . . . . . . . . . . . . . . . .37
58 STATIC RESISTANCE HOT WATER COIL
(40 TON) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
28 ELECTRICAL DATA 40 TON W/ELECTRIC HEAT AND
POWER EXHAUST R-410A . . . . . . . . . . . . . . . . . . . .40
4
Johnson Controls Unitary Products
882108-YIM-B-1012
EVAPORATOR COIL
AND DRAIN PAN ACCESS
POWER & CONTROL WIRING
FILTER ACCESS
COMPRESSOR ACCESS
REAR
RIGHT
END
HEAT SECTION
FRONT
OPTIONAL POWER
OUTLET (115V)
LEFT END
POWER EXHAUST ACCESS
HEAT SECTION
EVAPORATOR COIL
AND DRAIN PAN ACCESS
FILTER DRIERS
FILTER ACCESS
REAR
SUPPLY BLOWER & MOTOR
FIGURE 1 - COMPONENT LOCATION
6
Johnson Controls Unitary Products
882108-YIM-B-1012
GENERAL
York Model Z42/Z33/Z34 units are single package cooling
only or cooling with gas, electric, hot water or steam heating
designed for outdoor installation on a rooftop and for non-res-
idential use.
This Furnace is not to be used for temporary heat-
ing of buildings or structures under construction.
ALL MODELS
The units are completely assembled on rigid, permanently
attached base rails. All piping, refrigerant charge, and electri-
cal wiring is factory installed and tested. The units require
electric power, gas, steam, or hot water connections and duct
connections. Gas fired units also require installation of a flue
gas outlet hood.
This system uses R-410A Refrigerant which oper-
ates at higher pressures than R-22. No other
refrigerant may be used in this system. Gage sets,
hoses, refrigerant containers and recovery sys-
tems must be designed to handle R-410A. If you
are unsure, consult the equipment manufacturer.
Failure to use R-410A compatible servicing equip-
ment may result in property damage or injury.
R-410A Refrigerant information.
SAFETY CONSIDERATIONS
NOTES, CAUTIONS AND WARNINGS
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.
Installer should pay particular attention to the words: NOTE,
CAUTION, and WARNING. Notes are intended to clarify or
make the installation easier. Cautions are given to prevent
equipment damage. Warnings are given to alert installer that
personal injury and/or equipment damage may result if instal-
lation procedure is not handled properly.
Untrained personnel can perform basic maintenance func-
tions 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 pre-
cautions in the literature, tags and labels attached to the unit
and other safety precautions that may apply.
GAS FIRED MODELS
DO NOT store or use gasoline or other flammable vapors and
liquids in the vicinity of this or any other appliance.
Follow all safety codes, including ANSI Z223.1-Latest Edi-
tion: wear safety glasses and work gloves; use quenching
cloth for unbrazing operations; have fire extinguisher avail-
WHAT TO DO IF YOU SMELL GAS
Do not try to light any appliance. Do not touch any electrical
switch. Do not use any phone in your building. Immediately
call your gas supplier from a neighbor’s phone. Follow the
gas supplier’s instructions. If you cannot reach your gas sup-
able for all brazing operations.
plier, call the fire department.
Before performing service or maintenance opera-
tions on unit, turn off main power switch to unit.
Electrical shock could cause personal injury.
The furnace and its individual shut-off valve must
be disconnected from the gas supply piping sys-
tem during any pressure testing of that system at
test pressures in excess of 0.5 psig. Pressures
greater than 0.5 will cause gas valve damage
resulting in a hazardous condition. If gas valve is
subjected to a pressure greater than 0.5 psig, it
must be replaced. The furnace must be isolated
from the gas supply piping system by closing its
individual manual shut-off valve during any pres-
sure testing of that system at test pressures equal
to or less than 0.5 psig.
Improper installation, adjustment, alteration, ser-
vice or maintenance can cause injury or property
damage. Refer to this manual. For assistance or
additional information consult a qualified installer,
service agency or the gas supplier.
INSPECTION
As soon as a unit is received, it should be inspected for possi-
ble damage during transit. If damage is evident, the extent of
damage should be noted on the carrier’s freight bill. A sepa-
rate request for inspection by the carrier’s agent should be
made in writing.
Johnson Controls Unitary Products
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882108-YIM-B-1012
After installation, gas fired units must be adjusted to obtain a
temperature rise within the range specified on the unit rating
plate.
REFERENCE
Additional information is available in the following reference
form:
If components are to be added to a unit to meet local codes,
they are to be installed at the contractor's and/or the cus-
tomer's expense.
•
246837 - Technical Guide
APPROVALS
Size of unit for proposed installation should be based on heat
loss / heat gain calculation made according to the methods of
the Air Conditioning Contractors of America (ACCA).
Designed certified by CSA, ETL, CETL as follows:
1. For use as a forced air furnace with cooling unit (gas
heat models).
LOCATION
2. For outdoor installation only.
Use the following guidelines to select a suitable location for
these units:
3. For installation on combustible material and may be
installed directly on combustible flooring or Class A,
Class B or Class C roof covering materials.
TABLE 1: COOLING & ELECTRICAL APPLICATION
4. For use with natural gas (convertible to LP with kit).
Not suitable for use with conventional venting systems.
VOLTAGE VARIATIONS
UNIT POWER
SUPPLY
MIN. VOLTS
540
MAX VOLTS
INSTALLATION
575-3-60
208/230-3-60
460-3-60
630
252
504
PRECEDING INSTALLATION
187
If a factory option convenience outlet is installed, the weath-
erproof outlet cover must be field installed. The cover shall be
located in the unit control box. To install the cover, remove
the shipping label covering the convenience outlet, follow the
instructions on the back of the weatherproof cover box, and
432
TABLE 2: COOLING & ELEC. APP. LIMITATIONS
MODEL
attach the cover to the unit using the (4) screws provided.
LIMITATIONS
Z42
Z33
Z34
Supply Air CFM
(min./max)
6,000-
12,500
6,000-
15,000
8,000-
20,000
208/230-3-60 and 380/415-3-50 units with factory
installed Powered Convenience Outlet Option are
wired for 230v and 415v power supply respectively.
Change tap on transformer for 208-3-60 or 380-3-50
operation. See unit wiring diagram.
Entering Wet Bulb
Temp (F°) (min./max)
57/75
57/75
57/75
Ambient Temp
40/125
40/125
40/125
LIMITATIONS
Min. Air Temperature on Gas Fired Heat Exchangers (°F)
The installation of this unit must conform to local building
codes, or in the absence of local codes, with ANSI Z223.1
Natural Fuel Gas Code and /or CAN/CGA B149 installation
codes.
Aluminized
Stainless
25
0
25
0
25
0
In U.S.A.:
1. Unit is designed for outdoor installation only.
1. National Electrical Code ANSI/NFPA No. 70-Latest Edi-
tion.
2. Condenser coils must have an unlimited supply of air.
Where a choice of location is possible, position the unit
on either north or east side of building.
2. National Fuel Gas Code Z223.1-Latest Edition.
3. Gas-Fired Central Furnace Standard ANSI Z21.47-Lat-
est Edition.
3. Suitable for roof mount on curb.
4. Roof structures must be able to support the weight of the
unit and its accessories. Unit must be installed on a solid
level roof curb or appropriate angle iron frame.
4. Local gas utility requirements.
5. Maintain level tolerance to 3/4 inches across width and 2
inches along length.
8
Johnson Controls Unitary Products
882108-YIM-B-1012
TABLE 3: STANDARD GAS HEATING CAPACITIES
1
3
INPUT CAPACITY (MBH)
OUTPUT
GAS RATE, CU. FT./HR.
GAS HEAT
OPTION
AVAILABLE ON
MODELS
CAPACITY
(MBH)
2
1ST STAGE
267
TOTAL
267
1ST STAGE
247
TOTAL
247
N3
N5
N8
Z42/Z33/Z34
Z42/Z33/Z34
Z34 ONLY
213
426
638
267
533
247
495
4
267
800
247
742
1.
Heating capacity is only staged on CV models. VAV models use only one stage at full capacity.
Blower motor heat not included.
2.
3.
3
Based on a heat content of 1075 Btu/Ft.
4.
Unit Control Board with 3 heating outputs only. For all other Unit Control Boards the 1st Stage is 533 MBH.
TABLE 4: TEMPERATURE RISE
TABLE 5: MINIMUM HEATING CFM
MODULES
MODULES
TON
TON
1
1
2
3
2
3
1
25
30
40
5-35
5-35
5-30
25-55
20-50
10-45
-
-
25
30
40
6,000
6,000
8,000
7,183
7,901
8,779
-
-
25-55
13,169
1.
Calculated minimum CFM for maximum heat
rise is 5,644 for 25/30T and 6,584 for 40T, 1
module.
TABLE 6: MODULATING GAS HEATING CAPACITIES
INPUT CAPACITY (MBH)
GAS RATE, CU. FT./HR.
OUTPUT CAPACITY
AVAILABLE ON
GAS HEAT OPTION
STEPS
1
MODELS
(MBH)
MINIMUM
69
MAXIMUM
267
MINIMUM
64
MAXIMUM
247
2
2
2
D3
D5
D8
Z42/Z33/Z34
Z42/Z33/Z34
Z34 ONLY
6
213
426
638
69
533
12
17
64
495
69
800
64
744
1.
2.
Output Capacity at Full Fire.
Modulating Gas Heat available on CV models only.
Johnson Controls Unitary Products
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882108-YIM-B-1012
TABLE 7: MODULATING HEAT
STAGES OF GAS CONTROL (% OF FULL HEAT OUTPUT)
GAS HEAT OPTION
AVAILABLE ON MODELS
STEP
1
INPUT
OUTPUT
55,466
% OF TOTAL OUTPUT
26%
69,333
2
106,666
165,332
202,665
229,332
266,666
69,333
85,333
40%
D3
3
132,266
162,132
183,466
213,333
55,466
62%
(Turn down ratio
3.8 to 1)
Z42, Z33, Z34
4
76%
5
86%
6
100%
13%
1
2
106,666
165,332
202,665
229,332
266,666
325,331
362,664
389,331
426,664
495,997
533,330
69,333
85,333
20%
3
132,266
162,132
183,466
213,333
260,265
290,132
311,465
341,331
396,798
426,664
55,466
31%
4
38%
5
43%
D5
6
50%
(Turn down ratio
7.7 to 1)
Z42, Z33, Z34
7
61%
8
68%
9
73%
10
11
12
1
80%
93%
100%
9%
2
106,666
165,332
202,665
229,332
266,666
325,331
362,664
389,331
426,664
495,997
533,330
586,663
655,996
693,329
762,662
799,995
85,333
13%
3
132,266
162,132
183,466
213,333
260,265
290,132
311,465
341,331
396,798
426,664
469,330
524,797
554,663
610,130
639,996
21%
4
25%
5
29%
6
33%
7
41%
8
45%
D8
(Turn down ratio
11.5 to 1)
Z34 Only
9
49%
10
11
12
13
14
15
16
17
53%
62%
67%
73%
82%
87%
95%
100%
SPREADER BARS
(3 PLACES)
If a unit is to be installed on a roof curb other than a
York roof curb, gasketing must be applied to all sur-
faces that come in contact with the unit underside.
If a unit is to be installed on an angle iron frame it is
recommended that it be sized to allow the bottom
rail to overhang to facilitate installation of conden-
27”
CABLES
RIGGING:
32”
(1) RIG WITH SIX CABLES AND THREE SPREADER
BARS AT LEAST 98” ACROSS THE WIDTH OF THE UNIT.
(2) CENTER OF GRAVITY INCLUDES ECONOMIZER
AND POWER EXHAUST.
ALL PANELS MUST BE SECURED IN
PLACE WHEN THE UNIT IS LIFTED.
FIGURE 2 - TYPICAL RIGGING
10
Johnson Controls Unitary Products
882108-YIM-B-1012
TABLE 8: UNIT WEIGHTS
TABLE 9: SUPPLY FAN MOTOR VFD WEIGHTS
COMPONENT
Basic Unit
25 TON
30 TON
40 TON
Supply Fan Motor VFD
230V
460V
575V
4410
Gas Heat
4565
4845
W/O Bypass
7.5hp
60
60
25
25
50
50
50
30
30
60
60
60
267 MBH
533 MBH
800 MBH
180
320
-
180
320
-
180
320
450
10hp
15hp
75
Electric Heat
20hp
75
40KW
80KW
108KW
40
105
110
40
105
110
40
105
110
25hp
115
W/Bypass
7.5hp
Hot Water Heat
1 Row Coil
2 Row Coil
70
85
70
85
70
85
155
155
185
185
255
90
90
120
120
155
155
155
10hp
Steam Heat
85
Blower
15hp
140
140
140
1 Row Coil
85
85
20hp
Forward Curve Fan (Std Fan)
FC IGV
0
0
0
25hp
155
135
155
155
135
155
175
155
180
Air Foil Fan
AF IGV
TABLE 10: EXHAUST FAN MOTOR VFD WEIGHTS
Motor - Supply Fan
Exhaust Fan Motor
W/O Bypass
230V
460V
575V
7.5hp
10hp
15hp
20hp
25hp
110
145
200
240
-
-
-
145
200
240
300
145
200
240
300
5hp
7.5hp
10hp
15hp
15
50
50
65
10
15
15
40
20
20
20
50
Supply Fan Motor VFD
Refrigeration
T-Coat Evap.
T-Coat cond.
Hot Gas Bypass
32
32
10
30
30
10
40
40
10
NOTE: If the Millennium is VAV with ERV, add the
weight of an exhaust VFD - it will be in the unit.
.
Low Ambient Head Pressure Control
CENTER OF
GRAVITY
208-230/380/460
575
5
25
5
25
5
25
RIGHT END
CONDENSER
COILS
C
REAR
B
Filters
70
6" Rigid
70
70
D
1
Exhaust
X
Exhaust Type
92”
Barometric
Modulated
Exhaust Motor
45
140
65
275
65
275
Y
A
FRONT
240”
5hp
7.5hp
10hp
80
80
110
145
80
110
145
200
110
145
200
1
FIGURE 3 - CENTER OF GRAVITY
1.
15hp
200
data respectively.
Exhaust Motor VFD
Economizer
Std. Econ.
Econ. w/ERV
235
235
50
235
50
50
Control
15
Disconnect
110V outlet
Optilogic
15
55
20
15
55
20
55
20
Roof Curb
415
Partial Curb
415
415
1.
If ERV and Supply Fan VAV are selected, add the
Johnson Controls Unitary Products
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882108-YIM-B-1012
RIGGING AND HANDLING
This unit is not designed to be handled with a fork-truck.
All panels must be secured in place when the unit
is lifted.
Exercise care when moving the unit. Do not remove any
packaging until the unit is near the place of installation. Rig
the unit by attaching cable slings to the lifting lugs provided in
the unit base rails. Spreaders MUST be used across the top
The condenser coils should be protected from
damage by the rigging cables with plywood or
other suitable material.
An adhesive backed cover is provided over the
outside of the combustion air inlet opening on gas
fired units to prevent moisture from entering the
unit which could cause damage to electrical com-
ponents. Allow this closure label to remain in place
until the combustion air hood is to be installed
•
Rig with six cables and spread with three 98-inch
spreaders across width of unit.
•
•
Center of gravity includes economizer, exhaust or return
TABLE 11: UNIT CORNERWEIGHT
25 TON
30 TON
40 TON
UNIT
DESCRIPTION
A
B
C
D
A
B
C
D
A
B
C
D
Basic Unit
870
949
1352
1239
930
972
1360
1303
969
969
1454
1482
1454
Basic Unit With
Economizer
1018
994
1111
1313
1418
1203
1300
1076
1073
1124
1328
1403
1272
1403
1058
1102
1058
1055
1482
1570
Basic Unit With
Economizer and
Gas or Electric Heat
1084
1073
1275
1503
1485
Basic Unit With
Economizer and
Gas or Electric Heat
and Power Exhaust
1220
1275
1318
1262
1275
1410
1410
1335
1278
1551
NOTES: Basic Unit = cooling only, 10hp FC fan.
+ Econ = +235lb
+ Heat = single stage gas, 180 lb
+ Power Exhaust = modulating 7.5hp
CLEARANCES
TABLE 12: UNIT CENTER OF GRAVITY
25 TON
30 TON
40 TON
All units require certain clearances for proper operation and
service. Installer must make provisions for adequate combus-
tion and ventilation air in accordance with section 5.3, Air for
Combustion and Ventilation of the National Fuel Gas Code
ANSI Z223.1 or Sections 7.2, 7.3 or 7.4 of CAN/CGA B149
installation codes-Latest Edition and/or applicable provisions
of the local building codes. Refer to Figure 8 for clearances
required for combustible construction, servicing, and proper
unit operation.
MODEL
X
Y
X
Y
X
Y
Basic Unit
99”
48”
100”
110”
47”
96”
46"
Basic Unit /w
Econ.
110”
48”
48”
47”
46”
100”
99”
46"
45"
Basic Unit /w
Econ. & Gas or
Elect. Heat,
Steam or Hot
Water Heat
104”
118”
104”
114”
Basic Unit /w
Econ. & Gas or
Elect. Heat, &
Power Exhaust
47”
46”
111”
45"
(COOLING OPERATION) Do not permit overhang-
ing structures or shrubs to obstruct condenser air
discharge outlet, combustion air inlet or vent out-
lets.
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Johnson Controls Unitary Products
882108-YIM-B-1012
When the unit is equipped with power exhaust fans or return
air fan the return duct should have a 90 elbow before opening
to the building space to abate noise.
(GAS HEATING OPERATION)
The supply and return air duct systems should be designed
for the CFM and static pressure requirements of the job. They
should NOT be sized to match the dimensions of the duct
connections on the unit.
Excessive exposure to contaminated combustion
air will result in safety and performance related
problems. To maintain combustion air quality, the
recommended source of combustion air is the out-
door air supply.
If the unit is equipped with hot water or steam heat then the
supply air direction will be down only.
The outdoor air supplied for combustion should be
free from contaminants due to chemical exposure
that may be present from the following sources:
AIR HOODS FOR FIXED OUTSIDE AIR
(UNITS WITH MANUAL ECONOMIZER)
These hoods are factory installed. The dampers may be
adjusted by loosening the thumb screw, turning the lever to
the desired position, and retightening the thumb screw.
•
•
•
•
•
Commercial buildings
Indoor pools
Laundry rooms
Hobby or craft rooms
Chemical storage areas
AIR HOODS FOR ECONOMIZER
The following substances should be avoided to
maintain outdoor combustion air quality:
There are (3) economizer outside air intake hoods provided
with the unit. The hood on the end of the unit is factory
mounted. The (2) front and rear hoods are made operational
per the following instructions.
•
•
•
•
•
•
•
•
•
•
•
•
•
Permanent wave solutions
Chlorinated waxes and cleaners
Chlorine based swimming pool cleaners
Water softening chemicals
De-icing salts or chemicals
Carbon tetrachloride
Remove the screws holding the economizer hood shipping
covers in place. Discard covers.
Rotate the hoods out (each hood is hinged in the lower cor-
ner). Secure the hoods with screws along the top and sides.
Halogen type refrigerants
Apply a bead of RTV sealer along the edge of both hoods
and each pivot joint to prevent water leakage.
Cleaning solvents (such as perchloroethylene)
Printing inks, paint removers, varnishes, etc.
Hydrochloric acid
Cements and glues
Antistatic fabric softeners for clothes dryers
Masonry acid washing materials
Seal any unused screw holes with RTV or by replacing the
screw.
AIR HOODS FOR EXHAUST AIR
When furnished, these hoods and dampers are factory
installed.
DUCTWORK
CONDENSATE DRAIN
Ductwork should be designed and sized according to the
methods in Manual Q of the Air Conditioning Contractors of
America (ACCA).
There is one condensate drain connection. Trap the connec-
tion per Figure 4. The trap and drain lines should be pro-
tected from freezing.
A closed return duct system should be used. This will not pre-
clude use of economizers or outdoor fresh air intake. The
supply and return air duct connections at the unit should be
made with flexible joints to minimize noise.
Plumbing must conform to local codes. Use a sealing com-
pound on male pipe threads. Install condensate drain lines
from the 1-1/2 inch NPT female connections on the unit to an
open drain.
Johnson Controls Unitary Products
13
882108-YIM-B-1012
FILTERS
U
N
I
T
B
A
S
E
Throwaway or rigid filters are supplied with each unit. Filters
must always be installed ahead of evaporator coil and must
be kept clean or replaced with same size and type. Dirty fil-
ters will reduce the capacity of the unit and will result in
frosted coils or safety shutdown. Required filter sizes are
filters properly installed.
D
R
A
I
N
C
O
N
N
E
C
T
I
O
N
F
A
C
T
O
R
Y
I
N
S
T
A
L
L
E
D
Y
R
O
O
F
C
U
R
R
B
O
P
E
R
I
M
E
T
E
R
S
T
U
P
P
C
O
R
T
S
R
U
T
U
R
E
H
THERMOSTAT (CONSTANT VOLUME UNITS)
F
I
E
L
D
S
U
P
P
L
I
E
D
T
7
3
0
0
T
H
E
R
M
O
S
T
A
T
S
U
B
B
A
S
E
Y
-
M
I
N
I
M
U
M
2
"
H
-
1
/
2
"
P
L
U
S
T
O
T
A
L
S
T
A
T
I
C
P
R
E
S
S
U
R
E
-
M
I
N
I
M
U
M
R
C
G
Y
1
Y
2
Y
3
Y
4
W
1
W
2
A
1
C
T
T
FIGURE 4 - RECOMMENDED DRAIN PIPING
SERVICE ACCESS
R
E
M
O
T
E
2
T
H
O
4
7
0
2
2
2
4
S
E
N
S
O
R
R
G
Access to all serviceable components is provided by the fol-
lowing hinged doors:
E
Q
U
I
P
.
G
N
D
.
Y
1
L
1
L
2
L
3
Y
Y
2
3
T
B
1
A
B
C
Y
W
W
4
1
•
•
Furnace compartment
1
2
P
O
W
E
R
S
U
P
P
L
Y
Supply Air Fan compartment Evaporator Coil compart-
ment (three doors)
A
C
P
O
W
E
R
W
I
R
I
N
G
•
•
•
Filter compartment economizer compartment (two doors)
Power Exhaust compartment (two doors)
Main control panels (one door)
FIGURE 5 - TYPICAL THERMOSTAT WIRING
The thermostat, if used, should be located on an inside wall
approximately 56 inches above the floor where it will not be
subject to drafts, sun exposure or heat from electrical fixtures
or appliances. Follow manufacturer's instructions enclosed
TABLE 13: CONTROL WIRE SIZES
Make sure that all screws and panel latches are
replaced and properly positioned on the unit to
maintain an air-tight seal.
WIRE SIZE
20 AWG
MAXIMUM LENGTH
100 Feet
COMPRESSORS
18 AWG
150 Feet
Units are shipped with compressor mountings factory-
adjusted and ready for operation.
SPACE SENSOR (VARIABLE AIR VOLUME UNITS)
The space sensor, if used, should be located on an inside
wall approximately 56 inch above the floor where it will not be
subject to drafts, sun exposure or heat from electrical fixtures
or appliances. Follow manufacturer's instructions enclosed
with sensor for general installation procedure.
DO NOT loosen compressor mounting bolts.
14
Johnson Controls Unitary Products
882108-YIM-B-1012
unit wiring diagram mounted inside control doors for control
circuit and power wiring information.
POWER AND CONTROL WIRING
Field wiring to the unit must conform to provisions of National
Electrical Code (NEC) ANSI / NFPA 70-Latest Edition and / or
local ordinances. The unit must be electrically grounded in
accordance with the NEC and / or local codes. Voltage toler-
ances which must be maintained at the compressor terminals
during starting and running conditions are indicated on the
POWER WIRING DETAIL
Units are factory wired for the voltage shown on the unit
nameplate. The main power block requires copper wires.
wiring, fuses and disconnect switch. All field supplied wiring,
fuses and disconnects must comply with applicable NEC
codes.
The internal wiring harnesses furnished with this unit are an
integral part of the design certified unit. Field alteration to
comply with electrical codes should not be required. If any of
the wire supplied with the unit must be replaced, replacement
wire must be of the type shown on the wiring diagram and the
same minimum gauge as the replaced wire.
Power wiring is brought into the unit through the side of the
baserail or the bottom of the unit/control box inside the curb.
The baserail has a 2-1/2” diameter hole for field wiring and a
3-5/8” hole is provided for a through-the-curb connection. A
removable patch plate covers both the openings.
Power supply to the unit must be NEC Class 1 and must
comply with all applicable codes. A disconnect switch must
be provided (factory option available). The switch must be
separate from all other circuits. Wire entry at knockout open-
ings requires conduit fittings to comply with NEC and/or Local
Codes. Refer to Figures 11, 12, 13, and 14 for installation
location of openings.
Waterproof connections MUST be used to ensure
that water cannot penetrate the roof or roof curb.
If installing a field mounted disconnect on the unit, refer to
Unitstrut™ or equivalent rails should be mounted as shown to
provide structure for mounting. The location of the rails
should be adjusted to fit the disconnect within the dimensions
shown. Conduit run from the disconnect to the power entry
location in the baserail should be routed so that it does not
interfere with the doors of the unit access panels.
ERV
The ERV [Energy Recovery Ventilation] is a separate air han-
dler that attaches to the exhaust end of the 25-40T Millen-
nium packaged rooftop unit. The ERV is shipped separately
and assembled to the Millennium at the jobsite. An 'ERV' Mil-
lennium is shipped with an end configuration and electric
hookups designed to mate with the ERV. This option is avail-
able only with the Simplicity® control, and no other power
exhaust option can be supplied if an ERV is selected.
The ERV incorporates a rotating heat exchange wheel and a
pair of exhaust blowers. It exhausts return air through the
wheel, capturing the thermal energy of the exiting hot or cold
air as it passes. As the wheel rotates, the incoming airstream,
pulled through by the supply fan, regains that energy.
Use care to avoid damage when drilling holes for
the disconnect mounting.
NOTE: Since not all local codes allow mounting a discon-
nect on the unit, please confirm compliance with
local code before mounting a disconnect on the unit.
The Millennium ERV has a terminal block and mating con-
nectors to simplify hooking up the two systems. The controls
of both units are factory set to interact properly. Power for the
ERV blower motors and controls is provided through the Mil-
lennium unit. The Millennium /ERV dataplate information
includes the ERV electrical load.
Electrical wiring must be sized properly to carry the load.
Each unit must be wired with a separate branch circuit fed
directly from the meter panel and properly fused.
The Millennium Simplicity® control has parameters for the
ERV; refer to the parameter list. When economizer and ERV
options are selected on the same unit, the Simplicity® control
and the ERV have specific connections and internal rules for
that operation.
When connecting electrical power and control wir-
ing to the unit, waterproof connectors MUST BE
USED so that water or moisture cannot be drawn
into the unit during normal operation. The above
waterproofing conditions will also apply when
installing a field-supplied disconnect switch.
Also refer to the ERV Installation Instructions packaged with
the ERV.
Johnson Controls Unitary Products
15
882108-YIM-B-1012
GAS HEATING
On VAV units with gas fired furnace, ALL INDIVID-
UAL ROOM DAMPER BOXES MUST BE CON-
TROLLED FULL OPEN DURING HEATING
OPERATION TO ENSURE PROPER AIRFLOW
OVER THE FURNACE. A control contact powered
by the “VAV OPEN” terminals on the Simplicity®
control is provided for the damper box interlock.
this contact is normally open, and is closed during
heating operation.
FIGURE 6 - TYPICAL GAS PIPING CONNECTION
Gas piping recommendations:
GAS PIPING
1. A drip leg and a ground joint union must be installed in
the gas piping.
Proper sizing of gas piping depends on the cubic feet per
hour of gas flow required, specific gravity of the gas and the
length of run. National Fuel Gas Code Z223.1-Latest Edition
should be followed in all cases unless superseded by local
2. When required by local codes, a manual shut-off valve
will have to be installed outside of the unit.
3. Use wrought iron or steel pipe for all gas lines. Pipe dope
should be applied sparingly to male threads only.
The heating value of the gas may differ with locality. The
value should be checked with the local gas utility.
TABLE 14: PIPE SIZES
NOMINAL IRON PIPE, SIZE
LENGTH IN
FEET
1
1
1
1-1/4 IN.
1-1/2 IN.
2 IN.
Natural gas may contain some propane. Propane,
is an excellent solvent and will quickly dissolve
white lead or most standard commercial pipe seal-
ing compounds. Therefore, special shellac base
pipe dope compounds such as Gaskolac or Stalas-
tic, and compounds such as Rectorseal #5,
Clyde’s or John Crane must be applied for wrought
iron or steel pipe.
10
20
30
40
50
60
70
80
1,050
1,600
3,050
2,100
1,650
1,450
1,270
1,150
1,050
990
730
1,100
590
890
-
-
-
-
-
760
-
-
-
-
4. All piping should be cleaned of dirt and scale by ham-
mering on the outside of the pipe and blowing out the
loose particles. Before initial start-up, be sure that all of
the gas lines external to the unit have been purged of air.
1.
Maximum capacity of pipe in cubic feet of gas
per hour (based upon a pressure drop of 0.3 inch
water column and 0.6 specific gravity gas.
NOTE: There may be a local gas utility requirement specify-
ing a minimum diameter for gas piping. All units
require a 1-1/4 inch pipe connection at the entrance
fitting. Line should not be sized smaller than the
entrance fitting size.
5. The gas supply should be a separate line and installed in
accordance with all safety codes as prescribed under
Limitations. After the gas connections have been com-
pleted, open the main shutoff valve admitting normal gas
pressure to the mains. Check all joints for leaks with
soap solution or other material suitable for the purpose.
NEVER USE A FLAME.
GAS CONNECTION
6. The furnace and its individual manual shut-off valve must
be disconnected from the gas supply piping system
during any pressure testing of that system at test pres-
sures in excess of 0.5 psig.
The gas supply line should be routed within the space and
penetrate the roof at the gas inlet connection of the unit.
16
Johnson Controls Unitary Products
882108-YIM-B-1012
VENT AND COMBUSTION AIR
NOTE: All the hoods and hardware are shipped within the
evaporator section. Each hood must be properly
attached to the furnace doors to assure proper
operation and compliance with CSA/ETL safety cer-
Disconnect gas piping from unit when leak testing
at pressures greater than 0.5 psig. Pressures
greater than 0.5 psig will cause gas valve damage
resulting in a hazardous condition. If gas valve is
subjected to pressure greater than 0.5 psig, it must
be replaced.
The products of combustion are discharged horizontally
through hooded openings in the gas heat access doors.
7. A 1/8 inch N.P.T. plugged tapping, accessible for test
gage connection, must be installed immediately
1. Remove the shipping covers that are attached to the
heat section door covering the flue outlets.
upstream of the gas supply connection to the furnace.
EXHAUST VENT OUTLET
2. Locate the flue which is shipped in the evaporator sec-
tion.
3. Place the flue over the flue outlet and attach with screws
provided.
4. Refer to the Gas Furnace Operation Instruction in the
Start-up Section of this manual for further instructions.
COMBUSTION
AIR INLET
VENT FLUE
ASSEMBLY
REMOVE SHIPPING
HEAT SECTION DOOR
LABELS PRIOR TO
VENT INSTALLATION
FIGURE 7 - VENT AND COMBUSTION AIR
HOODS
10'
LEFT
RIGHT
END
END
60"
60"
60"
FRONT
60"
REAR
* Front is the side with access to the Electrical/Gas Controls
LEFT
60"
60"
60"
60"
10'
RIGHT
REAR
FRONT
TOP
NOTE: DO NOT use the unit roof to support any type of
structure bracing.
FIGURE 8 - CLEARANCES
Johnson Controls Unitary Products
17
882108-YIM-B-1012
ELECTRIC HEAT
Units with electric heat are fully wired and operational when
shipped. Constant volume units are designed for two equal
steps of capacity for 80 and three for 108 kWH heat; 40 kW
heat is one step only. Heat outputs on VAV units are all turned
on together at full heat capacity.
There are no provisions in the coil or control
sequence to prevent freezing of condensate. The
control valve, piping and field installed wiring con-
nections are particularly vulnerable because they
are installed in the vestibule outside of the condi-
tioned air stream. The installing party will be
responsible for properly insulating and installing
power and control wiring, to the actuator and pip-
ing.
HOT WATER HEAT
The YORK Millennium units (25, 30, and 40 Ton sizes) can be
furnished with a YORK hot water coil as the heat source. One
or two row coil units will be factory installed in the heating
section.
In one row hot water coil systems DO NOT exceed
a 40 gallons per minute flow rate.
NOTE: The hot water control valve will not be provided. The
installer will need to provide a hot water control
valve, to connect the hot water piping and power
wiring at the job site for the hot water heat section to
be operational.
In two row hot water coil systems DO NOT exceed
an 80 gallons per minute flow rate.
Condensate will freeze on the control valve and
piping if they are not properly insulated. Insulating
the control valve and piping is the responsibility of
the installing party.
PIPING CONNECTIONS
DO NOT use hot water coils as steam coils under
any circumstances.
The hot water piping must enter the unit through the floor of
the heat section compartment. The access doors to the com-
partment are gasketed so the compartment can be sealed.
However, as added protection for water leakage into the
space, the piping access holes should be sealed with a heat
ment and piping connections.
All piping, control valves, and wiring that is field
installed must be properly insulated and conform
to all local and national codes.
NOTE: For all hot water coils the entering water tempera-
ture should not exceed 200°F.
The hot water coil is located downstream of the supply air fan
and just above the supply air opening in the bottom of the
unit.
Piping access holes should be sealed with a heat
resistant mastic to prevent damage to equipment.
flow rate and capacity.
18
Johnson Controls Unitary Products
882108-YIM-B-1012
DO NOT use tin based solder. Brazing with tin
based solder could cause equipment damage or
possible injury to tenants of the structure that is
being conditioned.
All piping and control valves, and wiring that is
field installed must be properly insulated and con-
form to all local and national codes.
There are no provisions in the coil or control
sequence to prevent freezing of condensate. The
control valve, piping and field installed wiring con-
nections are particularly vulnerable because they
are installed in the vestibule outside of the condi-
tioned air stream. The installing party will be
responsible for properly insulating and installing
power and control wiring, to the actuator and pip-
ing.
(
1
O
R
2
R
O
W
)
C
O
N
D
E
N
S
I
N
G
H
O
T
W
A
I
T
E
R
S
E
C
T
I
O
N
C
O
L
2
6
"
I
N
L
E
T
(
2
"
)
O
U
T
L
E
T
(
2
"
)
O
U
T
S
I
D
E
O
F
1
5
.
8
"
B
A
S
E
R
A
I
L
1
1
.
8
8
"
8
.
3
8
"
DO NOT use steam coils as hot water coils under
any circumstances.
2
.
2
5
"
2
.
5
5
"
8
8
.
7
5
"
H
E
A
T
S
E
C
T
I
E
O
N
C
C
O
M
P
A
R
T
M
N
T
L
In steam coil systems, the steam pressure shall
not exceed 15 PSI.
FIGURE 9 - HOT WATER PIPING CROSS-SEC-
TION
PIPING CONNECTIONS
STEAM HEAT
rate and capacity.
The YORK Millennium units (25, 30 and 40 Ton sizes) can be
furnished with a YORK single row steam coil. YORK steam
coils are a factory installed option.
The steam piping must enter the unit through the floor of the
heat section compartment. The access doors to the compart-
ment are gasketed so the compartment can be sealed. How-
ever, as added protection for condensate leakage into the
space, the piping access holes should be sealed with a heat
resistant mastic. The following figure illustrates the location of
the compartment and piping connections.
T
O
P
V
I
E
W
C
O
N
D
E
N
S
I
N
G
S
T
E
O
A
M
S
E
C
T
I
O
N
C
I
L
2
6
"
O
U
T
L
E
T
(
1
1
/
2
"
)
O
U
T
S
I
D
E
O
F
1
5
.
8
"
I
N
L
E
T
(
2
"
)
B
A
S
E
R
A
I
L
8
"
8
.
3
8
"
2
.
5
5
"
9
"
Piping access holes should be sealed with a heat
resistant mastic to prevent damage to equipment.
8
8
.
7
5
"
H
E
A
T
S
E
C
T
I
E
O
N
C
O
M
P
A
R
T
M
N
T
C
L
FIGURE 10 - STEAM PIPING CROSS-SECTION
NOTE: The steam control valve, power and control wiring to
the actuator of the valve is the responsibility of the
installing party.
DO NOT use tin based solder. Brazing with tin
based solder could cause equipment damage or
possible injury to tenants of the structure that is
being conditioned.
Johnson Controls Unitary Products
19
882108-YIM-B-1012
STATIC PRESSURE CONTROL PLASTIC TUBING
EXHAUST STATIC PRESSURE
On units with variable frequency drives (VFD’s) or inlet guide
vanes (IGV's) on the supply blower and/or power exhaust
fans, pressure sensing tubing must be field supplied and
installed. All tubing must be installed from the transducers
(located in the unit) to the location in the building (or
ductwork) where a constant pressure is desired. The tubing
must also be installed from the transducers to a low-side ref-
erence to the atmosphere.
If a modulating-damper or variable frequency drive power
exhaust is installed, there will be a building pressure sensor
(BPS) in the control box directly below the Millennium Sim-
plicity® control. This ± .25 0-5VDC transducer sends a build-
ing pressure signal to the control. A sensing tube must be
installed from a representative location in the building to the
HI port of the transducer. Tubing must also be run between
the low pressure tap of the transducer to atmospheric pres-
sure.
The supply air duct pressure sensor (DPS) is located in the
control box directly below the Millennium Simplicity® control.
Plastic tubing (1/4”) must be run from the high pressure tap of
the transducer to a static pressure tap (field supplied) in the
supply duct located at a point where constant pressure is
desired. Tubing must also be run between the low pressure
tap of the transducer to atmospheric pressure. Changing the
adjustment is done to the duct pressure setpoint in the con-
trol.
Changing the adjustment is done to the building pressure set-
point in the control.
Do not run plastic tubes in the supply or return air
ducts as air movement could cause erroneous
sensing. If tubes penetrate bottom of unit be sure
openings are sealed against air and water leak-
age.
20
Johnson Controls Unitary Products
882108-YIM-B-1012
RETURN AIR
SUPPLY AIR
REAR
RIGHT
END
SEE
DETAIL
C
SEE
DETAIL
B
64"
72.25”
99.5”
131.5”
FRONT
92"
LEFT
END
RIGHT
END
REAR
4.5"
OPEN
3.625"
80.93"
4.5"
SEE
DETAIL
A
26"
71.61"
12"
MIN
15.89"
6.46"
88.7"
38.59"
127.5"
83"
FRONT
LEFT
END
C
240"
L
C
L
4.5"
TO GAS VALVE
MANIFOLD
2-1/2”
DIA. HOLES
3-5/8"
6.45"
4-5/8”
7”
BASE RAIL
28”
2.31”
BASE RAIL
11”
Ø 2-1/2”
1-1/2" FPT
1-1/4” NPT
DETAIL B
(ELECTRICAL CONNECTION)
DETAIL A
(DRAIN CONNECTION)
DETAIL C
(GAS CONNECTION
THROUGH CURB)
FOR COOLING ONLY AND ALL HEATING APPLICATIONS
FIGURE 11 - BOTTOM SUPPLY AND RETURN
Johnson Controls Unitary Products
21
882108-YIM-B-1012
NOTE:
RETURN AIR
SUPPLY AIR
FACTORY INSTALLED POWER
EXHAUST CANNOT BE ORDERED
WITH END RETURN.
REAR
RIGHT END
SEE
DETAIL
C
SEE
DETAIL
B
7-7/8”
64"
72.25”
99.5”
24.9”
"
6.25”
76-3/8”
92"
131.5”
LEFT END
FRONT
RIGHT
END
4.5"
REAR
OPEN
80.93"
3.625"
26"
SEE
DETAIL
A
71.61"
6.46"
12"
MIN
15.89"
C
L
88.7"
FRONT
LEFT END
240"
TO GAS VALVE
MANIFOLD
2-1/2”
DIA. HOLES
3-5/8"
4-5/8”
7”
28”
BASE RAIL
6.45"
2.31”
11”
BASE RAIL
2-1/2"
1-1/2" FPT
1-1/4” NPT
DETAIL B
(ELECTRICAL CONNECTION)
DETAIL A
(DRAIN CONNECTION)
DETAIL C
(GAS CONNECTION
THROUGH CURB)
FOR COOLING ONLY AND ALL HEATING APPLICATIONS
FIGURE 12 - END RETURN, BOTTOM SUPPLY
22
Johnson Controls Unitary Products
882108-YIM-B-1012
FRONT SUPPLY: FOR COOLING ONLY APPLICATIONS
REAR SUPPLY: FOR COOLING ONLY OR GAS HEAT APPLICATIONS
FRONT
REAR
RETURN AIR
SUPPLY AIR
REAR
RIGHT END
26"
55"
64"
72.25”
99.5”
SEE
DETAIL
C
8.15"
SEE
DETAIL
B
92"
131.5”
FRONT
LEFT END
RIGHT
END
REAR
OPEN
3.625"
80.93"
4.5"
SEE
DETAIL
A
12"
MIN
6.46"
38.59"
83"
FRONT
TO GAS VALVE
MANIFOLD
240"
LEFT END
4.5"
2-1/2”
DIA. HOLES
3-5/8"
4-5/8”
7”
28”
BASE RAIL
6.45"
2.31”
11”
BASE RAIL
2-1/2"
1-1/2" FPT
1-1/4” NPT
DETAIL B
(ELECTRICAL CONNECTION)
DETAIL A
DETAIL C
(GAS CONNECTION
THROUGH CURB)
(DRAIN CONNECTION)
FOR COOLING ONLY AND ALL HEATING APPLICATIONS
FIGURE 13 - BOTTOM RETURN, FRONT & REAR SUPPLY
Johnson Controls Unitary Products
23
882108-YIM-B-1012
FRONT SUPPLY: FOR COOLING ONLY APPLICATIONS
REAR SUPPLY: FOR COOLING ONLY OR GAS HEAT APPLICATIONS
FRONT
26
26"
"
55"
REAR
RETURN AIR
SUPPLY AIR
REAR
RIGHT
END
26"
55"
7-7/8”
64”
24.9”
6.25”
72.25”
SEE
DETAIL
C
76-3/8”
92”
8.15"
99.5”
SEE
DETAIL
B
131.5”
LEFT
END
FRONT
RIGHT
END
REAR
OPEN
3.625"
80.93"
SEE
DETAIL
A
12"
MIN
6.46"
FRONT
LEFT
END
240"
TO GAS VALVE
MANIFOLD
2-1/2”
DIA. HOLES
3-5/8"
4-5/8”
7”
28”
BASE RAIL
6.45"
2.31”
11”
BASE RAIL
2-1/2"
1-1/2" FPT
1-1/4” NPT
DETAIL B
(ELECTRICAL CONNECTION)
DETAIL A
(DRAIN CONNECTION)
DETAIL C
(GAS CONNECTION
THROUGH CURB)
FOR COOLING ONLY AND ALL HEATING APPLICATIONS
FIGURE 14 - END RETURN, FRONT & REAR SUPPLY
24
Johnson Controls Unitary Products
882108-YIM-B-1012
TABLE 15: GENERAL PHYSICAL DATA
UNIT SIZE
25 TON
30 TON
40 TON
UNIT EER / IPLV
(STANDARD CAPACITY EVAPORATOR)
1
10.5 / 12.3
10.5 / 11.2
10.1 / 11.0
COMPRESSOR DATA
4 x 5.7Ton
Scroll
NUMBER/SIZE
TYPE
4 x 7 Ton
Scroll
4 x 8.6 Ton
Scroll
UNIT CAPACITY STEPS
25%, 50%, 75%, 100%
INDOOR FAN AND DRIVE
1 / FC
25%, 50%, 75%, 100%
25%, 50%, 75%, 100%
NUMBER / TYPE
DIAMETER X WIDTH (INCHES)
HP RANGE
1 / FC
22 x 20
1 / FC
25 x 22
22 x20
7.5 - 20
10 - 25
10 - 25
CFM RANGE (FULL LOAD)
ESP RANGE
6,000 - 12,500
0.2” - 4.0”
EXHAUST FAN
1/FC
6,000 - 15,000
0.2" - 4.0”
8,000 - 18,000
0.2" - 4.0"
NUMBER/SIZE/TYPE
HP RANGE (SINGLE MOTOR)
CFM
2/FC
7.5 - 15
2/FC
7.5 - 15
5 - 10
3,000 - 9,000
EVAPORATOR COIL
26.0
4,000 - 15,000
4,000 - 18,000
SIZE (SQ. FT.)
ROWS/FPI
26.0
30.4
3 / 16
4 / 16
4 / 16
CONDENSER COIL
65
SIZE (SQ. FT.)
ROWS/FPI
78
104
2/16
2 /16
2 /16
CONDENSER FANS
4 / 24
QUANTITY / DIAMETER (INCHES)
NOMINAL CFM
4 / 24
7,200
1.5
4 / 30
9,600
1.5
6,800
MOTOR HP
1.0
ELECTRIC HEAT
40 - 108
KW RANGE
40 - 108
1
40 - 108
1
40 KW / CAPACITY STEPS (CV/VAV)
80 KW / CAPACITY STEPS (CV/VAV)
108 KW / CAPACITY STEPS (CV/VAV)
1
2 / 1
2 / 1
2 / 1
2
2
2
3 / 1
3 / 1
3 / 1
NATURAL GAS HEAT
UNIT SIZE
25 TON
30 TON
1 / 1
2 / 1
-
40 TON
1 / 1
267 MBH CAPACITY STEPS (CV/VAV)
1 / 1
533 MBH CAPACITY STEPS (CV/VAV)
2 / 1
2 / 1
2
800 MBH CAPACITY STEPS (CV/VAV)
-
6 / 1
3 / 1
267 MBH “MODULATING” CAPACITY STEPS (CV ONLY)
533 MBH “MODULATING” CAPACITY STEPS (CV ONLY)
800 MBH “MODULATING” CAPACITY STEPS (CV ONLY)
6 / 1
12 / 2
-
6 / 1
12 / 2
17 / 3
12 / 2
-
HOT WATER COIL
22.5” x 65”
25 Ton
SIZE (INCHES)
CAPACITY
22.5" X 65”
30 Ton
22.5" X 65”
40 Ton
STEAM COIL
SIZE (INCHES)
TYPE
21" X 65"
Steam Coil
FILTERS 2" TA
4 / 16 x 25 & 6 / 20 x 25
30.4
NUMBER / SIZE
4 / 16 x 25 & 6 / 20 x 25
30.4
4 / 16 x 25 & 6 / 20 x 25
30.4
FACE AREA (SQ. FT.)
FILTERS 2" PLEATED, 30%
4 / 16 x 25 & 6 / 20 x 25
30.4
NUMBER / SIZE
4 / 16 x 25 & 6 / 20 x 25
30.4
4 / 16 x 25 & 6 / 20 x 25
30.4
FACE AREA (SQ. FT.)
FILTERS 65% RIGID W/ 2” TA PREFILTERS
4 / 16 x 25 & 6 / 20 x 25
30.4
NUMBER / SIZE
4 /16 x 25 & 6 / 20 x 25
30.4
4 / 16 x 25 & 6 / 20 x 25
30.4
FACE AREA (SQ. FT.)
FILTERS 95% RIGID W/ 2” TA PREFILTERS
4 ea. 16 x 25 / 6 ea. 20 x 25
30.4
NUMBER / SIZE
4 ea. 16 x 25 / 6 ea. 20 x 25
30.4
4 ea. 16 x 25 / 6 ea. 20 x 25
30.4
FACE AREA (SQ. FT.)
1.
Cooling Only Unit Efficiency/ Gas Electric Unit Efficiency is 10.0
2.
Unit Control Board with 3 heating outputs only, all other Unit Control Boards 2 / 1.
Johnson Controls Unitary Products
25
882108-YIM-B-1012
TABLE 16: REFRIGERANT FACTORY CHARGE R-410A
CHARGE
UNIT (TONS)
MODEL
SYSTEM #1
13lb 8oz
14lb
SYSTEM #2
12lb 8oz
12lb 8oz
16lb 8oz
17lb
SYSTEM #3
12lb 8oz
12lb 8oz
14lb
SYSTEM #4
12lb 8oz
25
25
30
30
40
40
wo/HGBP
w/HGBP
wo/HGBP
w/HGBP
wo/HGBP
w/HGBP
12lb 8oz
16lb
18lb 4oz
16lb 8oz
17lb 10oz
18lb 2oz
14lb 8oz
19lb 13oz
20lb 5oz
18lb 12oz
19lb 13oz
20lb 5oz
17lb 10oz
18lb 2oz
TABLE 17: ELECTRICAL DATA 25 TON BASIC UNIT R-410A
2
Supply Blower
Motor
Max Fuse /
Compressors (each)
OD Fan Motors
1
3
MCA
Breaker
Size
(Amps)
Voltage
(Amps)
Qty
RLA
LRA
MCC
Qty
FLA
HP
FLA
7.5
10
15
20
7.5
10
15
20
7.5
10
15
20
7.5
10
15
20
24.2
30.8
46.2
59.4
22
138
146
165
182
134
142
159
174
65
150
175
200
225
150
150
200
225
70
208-3-60
4
22.4
149
35
4
4.5
28
230-3-60
460-3-60
4
4
4
22.4
10.6
7.7
149
75
35
16.5
12
4
4
4
4.3
2.15
1.7
42
54
11
14
69
80
21
77
90
27
85
110
50
9
49
11
51
60
575-3-60
54
17
59
70
22
65
80
1.
Minimum Circuit Ampacity.
2.
3.
Dual Element, Time Delay Type.
HACR type per NEC.
26
Johnson Controls Unitary Products
882108-YIM-B-1012
TABLE 18: ELECTRICAL DATA 30 TON BASIC UNIT R-410A
2
Supply Blower
Motor
Max Fuse /
Compressors (each)
OD Fan Motors
1
3
MCA
Breaker
Size
(Amps)
Voltage
(Amps)
Qty
RLA
LRA
MCC
Qty
FLA
HP
FLA
10
15
25
20
10
15
25
20
10
15
20
25
10
15
20
25
30.8
46.2
74.8
59.4
28
162
181
217
197
158
176
208
191
77
175
225
250
250
175
200
250
225
90
208-3-60
4
25.0
164
39
4
5.8
42
230-3-60
460-3-60
4
4
4
25.0
12.0
9.0
164
100
78
39
19
14
4
4
4
5.8
2.9
2.2
68
54
14
21
86
100
110
125
60
27
93
34
102
59
11
17
66
80
575-3-60
22
72
90
27
79
100
1.
Minimum Circuit Ampacity.
2.
3.
Dual Element, Time Delay Type.
HACR type per NEC.
TABLE 19: ELECTRICAL DATA 40 TON BASIC UNIT R-410A
2
Supply Blower
Motor
Max Fuse /
Compressors (each)
OD Fan Motors
1
3
MCA
Breaker
Size
(Amps)
Voltage
(Amps)
Qty
RLA
LRA
MCC
Qty
FLA
HP
FLA
10
15
20
25
10
15
20
25
10
15
20
25
10
15
20
25
30.8
46.2
59.4
74.8
28
182
201
218
237
179
196
211
229
97
200
225
250
300
200
225
250
250
110
125
125
150
80
208-3-60
4
30.1
255
47
4
5.8
42
230-3-60
460-3-60
4
4
4
30.1
16.7
12.2
255
114
80
47
26
19
4
4
4
5.8
2.9
2.2
54
68
14
21
105
112
121
72
27
34
11
17
79
90
575-3-60
22
85
100
110
27
91
1.
Minimum Circuit Ampacity.
2.
3.
Dual Element, Time Delay Type.
HACR type per NEC.
Johnson Controls Unitary Products
27
882108-YIM-B-1012
TABLE 20: ELECTRICAL DATA 25 TON W/ELECTRIC HEAT R-410A
2
OD Fan
Motors
(each)
Max Fuse /
Compressors
(each)
Supply Blower
Motor
Electric Heat Option
1
3
MCA
Breaker
Size
(Amps)
Voltage
(Amps)
Qty
RLA
LRA
MCC
FLA
HP
7.5
10
15
20
7.5
10
15
20
7.5
10
15
20
7.5
10
15
20
7.5
10
15
20
7.5
10
15
20
7.5
10
15
20
7.5
10
15
20
7.5
10
15
20
7.5
10
15
20
FLA
24.2
30.8
46.2
59.4
24.2
30.8
46.2
59.4
22
Option
KW
Applied
Stages
Amps
138
146
165
182
197
205
225
241
143
150
168
183
212
220
237
252
71
150
175
200
225
225
225
250
300
150
150
200
225
250
250
250
300
80
E4
40
80
30
1
2
1
2
1
2
3
1
2
3
83
208-3-60
4
22.4
149
35
4.5
E8
E4
E8
E4
E8
E1
E4
E8
E1
60
167
92
28
40
36.8
73.6
36.8
73.6
99.4
36.8
73.6
99.4
42
54
230-3-60
4
22.4
149
35
4.3
22
28
80
184
46
42
54
11
14
75
80
40
21
84
90
27
91
110
125
125
125
150
150
175
175
175
70
11
106
110
119
126
138
142
151
158
62
14
460-3-60
4
10.6
75
16.5
2.15
80
92
21
27
11
14
108
40
125
40
21
27
9
11
64
70
17
72
80
22
78
80
9
92
110
110
110
125
150
150
150
150
11
94
575-3-60
4
7.7
54
12
1.7
80
80
17
102
108
120
122
130
136
22
9
11
108
108
17
22
1.
Minimum Circuit Ampacity.
2.
3.
Dual Element, Time Delay Type.
HACR type per NEC.
28
Johnson Controls Unitary Products
882108-YIM-B-1012
TABLE 21: ELECTRICAL DATA 30 TON W/ELECTRIC HEAT R-410A
2
OD Fan
Motors
(each)
Max Fuse /
Compressors
(each)
Supply Blower
Motor
Electric Heat Option
1
3
MCA
Breaker
Size
Voltage
(Amps)
Qty
RLA
LRA
MCC
FLA
HP
10
15
20
25
10
15
20
25
10
15
20
25
10
15
20
25
10
15
20
25
10
15
20
25
10
15
20
25
10
15
20
25
10
15
20
25
10
15
20
25
FLA
30.8
46.2
59.4
74.8
30.8
46.2
59.4
74.8
28
Option
KW
Applied
Stages
Amps
(Amps)
175
225
250
250
225
250
300
300
175
200
225
250
250
250
300
300
90
162
181
197
217
205
225
241
260
158
176
191
208
220
237
252
270
77
E4
40
80
30
1
2
1
2
1
2
3
1
2
3
83
208-3-60
4
25.0
164
39
5.8
E8
E4
E8
E4
E8
E1
E4
E8
E1
60
167
92
42
40
36.8
73.6
36.8
73.6
99.4
36.8
73.6
99.4
54
68
230-3-60
4
25.0
164
39
5.8
28
42
80
184
46
54
68
14
21
86
100
110
125
125
125
150
150
175
175
175
200
70
40
27
93
34
102
110
119
126
135
142
151
158
167
64
14
21
460-3-60
4
12.0
100
19
2.9
80
92
27
34
14
21
108
40
125
40
27
34
11
17
72
80
22
78
90
27
84
100
110
110
125
125
150
150
150
150
11
94
17
102
108
114
122
130
136
142
575-3-60
4
9.0
78
14
2.2
80
80
22
27
11
17
108
108
22
27
1.
Minimum Circuit Ampacity.
2.
3.
Dual Element, Time Delay Type.
HACR type per NEC.
Johnson Controls Unitary Products
29
882108-YIM-B-1012
TABLE 22: ELECTRICAL DATA 40 TON W/ELECTRIC HEAT R-410A
2
OD Fan
Motors
(each)
Max Fuse /
Compressors
(each)
Supply Blower
Motor
Electric Heat Option
1
3
MCA
Breaker
Size
(Amps)
Voltage
(Amps)
Qty
RLA
LRA
MCC
FLA
HP
10
15
20
25
10
15
20
25
10
15
20
25
10
15
20
25
10
15
20
25
10
15
20
25
10
15
20
25
10
15
20
25
10
15
20
25
10
15
20
25
FLA
30.8
46.2
59.4
74.8
30.8
46.2
59.4
74.8
28
Option
KW
Applied
Stages
Amps
182
201
218
237
205
225
241
260
179
196
211
229
220
237
252
270
97
200
225
250
300
225
250
300
300
200
225
250
250
250
250
300
300
110
125
125
150
125
125
150
150
175
175
175
200
80
E4
40
80
30
1
2
1
2
1
2
3
1
2
3
83
208-3-60
4
30.1
255
47
5.8
E8
E4
E8
E4
E8
E1
E4
E8
E1
60
167
92
42
40
36.8
73.6
36.8
73.6
99.4
36.8
73.6
99.4
54
68
230-3-60
4
30.1
255
47
5.8
28
42
80
184
46
54
68
14
21
105
112
121
110
119
126
135
142
151
158
167
72
40
27
34
14
21
460-3-60
4
16.7
114
26
2.9
80
92
27
34
14
21
108
40
125
40
27
34
11
17
79
90
22
85
100
110
110
110
125
125
150
150
150
150
27
91
11
94
17
102
108
114
122
130
136
142
575-3-60
4
12.2
80
19
2.2
80
80
22
27
11
17
108
108
22
27
1.
Minimum Circuit Ampacity.
2.
3.
Dual Element, Time Delay Type.
HACR type per NEC.
30
Johnson Controls Unitary Products
882108-YIM-B-1012
TABLE 23: ELECTRICAL DATA 25 TON W/POWER EXHAUST R-410A
2
OD Fan
Motors
(each)
Max Fuse /
Compressors
(each)
Supply Blower
Motor
Pwr Exh Motor
1
3
MCA
Breaker
Size
(Amps)
Voltage
(Amps)
Qty
RLA
LRA
MCC
FLA
HP
FLA
HP
5
FLA
16.7
24.2
30.8
16.7
24.2
30.8
16.7
24.2
30.8
16.7
24.2
30.8
15.2
22
155
162
170
163
170
177
182
190
196
199
206
213
150
156
164
157
164
170
175
181
187
190
196
202
72
175
175
200
175
200
200
225
225
225
250
250
250
150
175
175
175
175
175
200
200
225
225
250
250
80
7.5
24.2
7.5
10
5
10
15
20
7.5
10
15
20
7.5
10
15
20
7.5
10
15
20
30.8
46.2
59.4
22
7.5
10
5
208-3-60
4
22.4
149
35
4.5
7.5
10
5
7.5
10
5
7.5
10
5
28
15.2
22
28
7.5
10
5
28
230-3-60
4
4
4
22.4
10.6
7.7
149
35
16.5
12
4.3
2.15
1.7
15.2
22
42
7.5
10
5
28
15.2
22
54
7.5
10
5
28
7.6
11
11
7.5
10
5
76
80
14
80
90
7.6
11
76
90
14
7.5
10
5
80
90
14
83
90
460-3-60
75
7.6
11
85
100
100
110
110
110
125
60
21
7.5
10
5
88
14
91
7.6
11
92
27
7.5
10
5
96
14
99
6.1
9
55
9
7.5
10
5
58
60
11
60
70
6.1
9
57
60
11
7.5
10
5
60
70
11
62
70
575-3-60
54
6.1
9
65
80
17
7.5
10
5
68
80
11
70
80
6.1
9
71
90
22
7.5
10
74
90
11
76
90
1.
Minimum Circuit Ampacity.
2.
3.
Dual Element, Time Delay Type.
HACR type per NEC.
Johnson Controls Unitary Products
31
882108-YIM-B-1012
TABLE 24: ELECTRICAL DATA 30 TON W/POWER EXHAUST R-410A
2
OD Fan
Motors
(each)
Max Fuse /
Compressors
(each)
Supply Blower
Motor
Pwr Exh Motor
1
3
MCA
Breaker
Size
(Amps)
Voltage
(Amps)
Qty
RLA
LRA
MCC
Qty
FLA
HP
FLA
HP
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
FLA
24.2
30.8
46.2
24.2
30.8
46.2
24.2
30.8
46.2
24.2
30.8
46.2
22
186
193
212
205
212
227
222
228
244
241
248
263
180
186
204
198
204
218
213
219
233
230
236
250
88
200
200
250
250
250
250
250
250
300
300
300
300
200
200
225
225
225
250
250
250
250
250
300
300
100
100
110
110
110
125
125
125
125
125
150
150
70
10
30.8
15
20
25
10
15
20
25
10
15
20
25
10
15
20
25
46.2
59.4
74.8
28
208-3-60
4
25.0
164
39
4
5.8
28
42
22
42
28
42
230-3-60
4
4
4
25.0
12.0
9.0
164
100
78
39
19
14
4
4
4
5.8
2.9
2.2
22
54
28
42
22
68
28
42
11
14
14
91
21
100
97
11
21
14
100
107
104
107
114
113
116
123
68
21
460-3-60
11
27
14
21
11
34
14
21
9
11
11
70
80
17
77
90
9
75
90
17
11
77
90
17
83
100
100
100
110
110
110
110
575-3-60
9
81
22
11
83
17
89
9
88
27
11
90
17
96
1.
Minimum Circuit Ampacity.
2.
3.
Dual Element, Time Delay Type.
HACR type per NEC.
32
Johnson Controls Unitary Products
882108-YIM-B-1012
TABLE 25: ELECTRICAL DATA 40 TON W/POWER EXHAUST R-410A
2
OD Fan
Motors
(each)
Max Fuse /
Compressors
(each)
Supply Blower
Motor
Pwr Exh Motor
1
3
MCA
Breaker
Size
(Amps)
Voltage
(Amps)
Qty
RLA
LRA
MCC
Qty
FLA
HP
FLA
HP
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
FLA
24
31
46
24
31
46
24
31
46
24
31
46
22
28
42
22
28
42
22
28
42
22
28
42
11
14
21
11
14
21
11
14
21
11
14
21
9
206
213
232
226
232
248
242
249
264
261
268
283
199
205
222
216
222
236
231
237
251
248
254
268
108
111
119
116
119
126
123
126
133
132
135
142
81
225
225
250
250
250
250
300
300
300
300
300
350
225
225
250
250
250
250
250
250
300
300
300
300
110
125
125
125
125
150
150
150
150
150
150
175
90
10
30.8
15
20
25
10
15
20
25
10
15
20
25
10
15
20
25
46.2
59.4
74.8
28.0
42.0
54.0
68.0
14.0
21.0
27.0
34.0
11.0
17.0
22.0
27.0
208-3-60
4
30.1
225
47.0
4
5.8
230-3-60
4
4
4
30.1
16.7
12.2
225
114
80
47.0
26.0
19.0
4
4
4
5.2
2.6
2.2
460-3-60
11
17
9
83
90
90
100
100
100
110
110
110
110
125
125
125
88
11
17
9
90
96
575-3-60
94
11
17
9
96
102
100
102
108
11
17
1.
Minimum Circuit Ampacity.
2.
3.
Dual Element, Time Delay Type.
HACR type per NEC.
Johnson Controls Unitary Products
33
882108-YIM-B-1012
TABLE 26: ELECTRICAL DATA 25 TON W/ELECTRIC HEAT AND POWER EXHAUST R-410A
2
Compressors
(each)
OD Fan Motors Supply Blower
(each) Motor
Max Fuse /
Electric Heat Option
Pwr Exh Motor
1
3
MCA
Breaker
Size
(Amps)
Voltage
(Amps)
Model KW Stages Amps Qty RLA LRA MCC
Qty
FLA
HP
FLA
HP
FLA
5
7.5
10
5
16.7
24.2
30.8
16.7
24.2
30.8
16.7
24.2
30.8
16.7
24.2
30.8
16.7
24.2
30.8
16.7
24.2
30.8
16.7
24.2
30.8
16.7
24.2
30.8
15.2
22
155
162
170
163
170
177
182
190
196
199
206
213
214
221
230
222
230
236
241
249
256
258
265
272
158
165
172
166
172
178
183
190
196
198
205
211
227
234
242
235
242
248
252
259
265
267
274
280
175
175
200
175
200
200
225
225
225
250
250
250
225
225
250
250
250
250
250
250
300
300
300
300
175
175
175
175
175
200
200
200
225
225
250
250
250
250
250
250
250
250
300
300
300
300
300
300
7.5
24.2
30.8
46.2
59.4
24.2
30.8
46.2
59.4
22
10
15
20
7.5
10
15
20
7.5
10
15
20
7.5
10
15
20
7.5
10
5
E4
E8
E4
E8
40
80
40
80
1
2
1
2
83
167
92
4
4
4
4
22.4 149
22.4 149
22.4 149
22.4 149
35
35
35
35
4
4
4
4
4.5
7.5
10
5
7.5
10
5
208-3-60
7.5
10
5
7.5
10
5
4.5
4.3
4.3
7.5
10
5
7.5
10
5
7.5
10
5
28
15.2
22
28
7.5
10
5
28
15.2
22
42
7.5
10
5
28
15.2
22
54
7.5
10
5
28
230-3-60
15.2
22
22
7.5
10
5
28
15.2
22
28
7.5
10
5
28
184
15.2
22
42
7.5
10
5
28
15.2
22
54
7.5
10
28
34
Johnson Controls Unitary Products
882108-YIM-B-1012
TABLE 26: ELECTRICAL DATA 25 TON W/ELECTRIC HEAT AND POWER EXHAUST R-410A (CONTINUED)
2
Compressors
(each)
OD Fan Motors Supply Blower
(each) Motor
Max Fuse /
Electric Heat Option
Pwr Exh Motor
1
3
MCA
Breaker
Size
(Amps)
Voltage
(Amps)
Model KW Stages Amps Qty RLA LRA MCC
Qty
FLA
HP
FLA
HP
FLA
5
7.5
10
5
7.6
11
79
82
80
7.5
11
14
21
27
11
14
21
27
11
14
21
27
90
14
7.6
11
86
90
83
90
10
15
20
7.5
10
15
20
7.5
10
15
20
7.5
10
5
86
90
14
7.6
11
89
90
E4
E8
E1
40
1
2
3
46
4
4
4
10.6
10.6
10.6
75
75
75
16.5
16.5
16.5
4
4
4
2.15
92
100
100
110
110
110
125
125
125
125
125
125
125
150
150
150
150
150
150
175
175
175
175
175
175
175
175
175
175
175
175
7.5
10
5
95
14
7.6
11
98
99
7.5
10
5
102
105
114
117
121
117
121
124
126
130
133
134
137
140
146
149
153
150
153
156
158
162
165
166
169
172
14
7.6
11
7.5
10
5
14
7.6
11
7.5
10
5
14
7.6
11
460-3-60
80
92
2.15
7.5
10
5
14
7.6
11
7.5
10
5
14
7.6
11
7.5
10
5
14
7.6
11
7.5
10
5
14
7.6
11
108
125
2.15
7.5
10
5
14
7.6
11
7.5
10
14
Johnson Controls Unitary Products
35
882108-YIM-B-1012
TABLE 26: ELECTRICAL DATA 25 TON W/ELECTRIC HEAT AND POWER EXHAUST R-410A (CONTINUED)
2
Compressors
(each)
OD Fan Motors Supply Blower
(each) Motor
Max Fuse /
Electric Heat Option
Pwr Exh Motor
1
3
MCA
Breaker
Size
(Amps)
Voltage
(Amps)
Model KW Stages Amps Qty RLA LRA MCC
Qty
FLA
HP
FLA
HP
FLA
5
7.5
10
5
6.1
9
68
71
70
70
7.5
9
11
6.1
9
73
80
70
70
10
15
20
7.5
10
15
20
7.5
10
15
20
11
17
22
9
7.5
10
5
73
80
11
6.1
9
75
80
E4
E8
E1
40
1
2
3
40
4
4
4
7.7
7.7
4
54
12
12
54
4
1.7
78
80
7.5
10
5
81
90
11
6.1
9
83
90
84
90
7.5
10
5
87
90
11
6.1
9
89
100
110
110
110
110
110
110
110
125
125
125
125
125
150
150
150
150
150
150
150
150
150
150
150
150
98
7.5
10
5
101
103
100
103
105
108
111
113
114
117
119
126
129
131
128
131
133
136
139
141
142
145
147
11
6.1
9
11
17
22
9
7.5
10
5
11
6.1
9
575-3-60
80
80
54
4
1.7
7.5
10
5
11
6.1
9
7.5
10
5
11
6.1
9
7.5
10
5
11
6.1
9
11
17
22
7.5
10
5
11
6.1
9
108
108
7.7
12
4
7.5
10
5
11
6.1
9
7.5
10
11
1.
Minimum Circuit Ampacity.
2.
3.
Dual Element, Time Delay Type.
HACR type per NEC.
36
Johnson Controls Unitary Products
882108-YIM-B-1012
TABLE 27: ELECTRICAL DATA 30 TON W/ELECTRIC HEAT AND POWER EXHAUST R-410A
2
Compressors
(each)
OD Fan Motors Supply Blower
(each) Motor
Max Fuse /
Electric Heat Option
Pwr Exh Motor
1
3
MCA
Breaker
Size
(Amps)
Voltage
(Amps)
Model KW Stages Amps Qty RLA LRA MCC
Qty
FLA
HP
FLA
HP
FLA
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
24.2
30.8
46.2
24.2
30.8
46.2
24.2
30.8
46.2
24.2
30.8
46.2
24.2
30.8
46.2
24.2
30.8
46.2
24.2
30.8
46.2
24.2
30.8
46.2
22
186
193
212
205
212
227
222
228
244
241
248
263
230
236
256
249
256
271
265
272
287
285
291
307
180
186
204
198
204
218
213
219
233
230
236
250
242
248
265
259
265
279
274
280
294
292
298
312
200
200
250
250
250
250
250
250
300
300
300
300
250
250
300
250
300
300
300
300
300
350
350
350
200
200
225
225
225
250
250
250
250
250
300
300
250
250
300
300
300
300
300
300
300
350
350
350
10
30.8
46.2
59.4
74.8
30.8
46.2
59.4
74.8
28
15
20
25
10
15
20
25
10
15
20
25
10
15
20
25
E4
E8
E4
E8
40
80
40
80
1
2
1
2
83
167
92
4
4
4
4
25.0 164
25.0 164
25.0 164
25.0 164
39
39
39
39
4
4
4
4
5.8
208-3-60
5.8
5.8
5.8
28
42
22
42
28
42
22
54
28
42
22
68
28
42
230-3-60
22
28
28
42
22
42
28
42
184
22
54
28
42
22
68
28
42
Johnson Controls Unitary Products
37
882108-YIM-B-1012
TABLE 27: ELECTRICAL DATA 30 TON W/ELECTRIC HEAT AND POWER EXHAUST R-410A (CONTINUED)
2
Compressors
(each)
OD Fan Motors Supply Blower
(each) Motor
Max Fuse /
Electric Heat Option
Pwr Exh Motor
1
3
MCA
Breaker
Size
(Amps)
Voltage
(Amps)
Model KW Stages Amps Qty RLA LRA MCC
Qty
FLA
HP
FLA
HP
FLA
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
11
14
21
11
14
21
11
14
21
11
14
21
11
14
21
11
14
21
11
14
21
11
14
21
11
14
21
11
14
21
11
14
21
11
14
21
88
100
100
110
110
110
125
125
125
125
125
150
150
125
125
150
150
150
150
150
150
150
175
175
175
175
175
175
175
175
175
175
175
200
200
200
200
10
14
21
27
34
14
21
27
34
14
21
27
34
91
100
97
15
20
25
10
15
20
25
10
15
20
25
100
107
104
107
114
113
116
123
121
124
133
130
133
140
137
140
147
146
149
156
153
156
165
162
165
172
169
172
179
178
181
188
E4
E8
E1
40
1
2
3
46
4
4
4
12.0 100
12.0 100
12.0 100
19
19
19
4
4
4
2.9
460-3-60
80
92
2.9
108
125
2.9
38
Johnson Controls Unitary Products
882108-YIM-B-1012
TABLE 27: ELECTRICAL DATA 30 TON W/ELECTRIC HEAT AND POWER EXHAUST R-410A (CONTINUED)
2
Compressors
(each)
OD Fan Motors Supply Blower
(each) Motor
Max Fuse /
Electric Heat Option
Pwr Exh Motor
1
3
MCA
Breaker
Size
(Amps)
Voltage
(Amps)
Model KW Stages Amps Qty RLA LRA MCC
Qty
FLA
HP
FLA
HP
FLA
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
7.5
9
11
17
9
73
75
80
10
11
17
22
27
11
17
22
27
11
17
80
83
90
81
90
15
20
25
10
15
20
25
10
15
11
17
9
83
90
89
100
100
100
110
110
110
110
110
110
125
125
125
125
125
125
125
150
150
150
150
150
150
150
150
150
150
150
175
175
E4
40
1
40
4
9.0
78
14
4
2.2
87
11
17
9
89
95
93
11
17
9
95
101
103
105
113
111
113
119
117
119
125
123
125
131
131
133
141
139
141
147
145
147
153
151
11
17
9
11
17
9
575-3-60
E8
80
2
80
4
9.0
78
14
4
2.2
11
17
9
11
17
9
11
17
9
11
17
9
E1
108
3
108
4
9.0
78
14
4
2.2
20
25
22
27
11
17
9
1.
Minimum Circuit Ampacity.
2.
3.
Dual Element, Time Delay Type.
HACR type per NEC.
Johnson Controls Unitary Products
39
882108-YIM-B-1012
TABLE 28: ELECTRICAL DATA 40 TON W/ELECTRIC HEAT AND POWER EXHAUST R-410A
2
Compressors
(each)
OD Fan Motors Supply Blower
(each) Motor
Max Fuse /
Electric Heat Option
Pwr Exh Motor
1
3
MCA
Breaker
Size
(Amps)
Voltage
(Amps)
Model KW Stages Amps Qty RLA LRA MCC
Qty
FLA
HP
FLA
HP
FLA
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
24.2
30.8
46.2
24.2
30.8
46.2
24.2
30.8
46.2
24.2
30.8
46.2
24.2
30.8
46.2
24.2
30.8
46.2
24.2
30.8
46.2
24.2
30.8
46.2
22
206
213
232
226
232
248
242
249
264
261
268
283
230
236
256
249
256
271
265
272
287
285
291
307
201
207
224
218
224
238
233
239
253
251
257
271
242
248
265
259
265
279
274
280
294
292
298
312
225
225
250
250
250
250
300
300
300
300
300
350
250
250
300
250
300
300
300
300
300
350
350
350
225
225
250
250
250
250
250
250
300
300
300
300
250
250
300
300
300
300
300
300
300
350
350
350
10
30.8
46.2
59.4
74.8
30.8
46.2
59.4
74.8
28
15
20
25
10
15
20
25
10
15
20
25
10
15
20
25
E4
E8
E4
E8
40
80
40
80
1
2
1
2
83
167
92
4
4
4
4
30.1 255
30.1 255
30.1 255
30.1 255
47
47
47
47
4
4
4
4
5.8
208-3-60
5.8
5.8
5.8
28
42
22
42
28
42
22
54
28
42
22
68
28
42
230-3-60
22
28
28
42
22
42
28
42
184
22
54
28
42
22
68
28
42
40
Johnson Controls Unitary Products
882108-YIM-B-1012
TABLE 28: ELECTRICAL DATA 40 TON W/ELECTRIC HEAT AND POWER EXHAUST R-410A (CONTINUED)
2
Compressors
(each)
OD Fan Motors Supply Blower
(each) Motor
Max Fuse /
Electric Heat Option
Pwr Exh Motor
1
3
MCA
Breaker
Size
(Amps)
Voltage
(Amps)
Model KW Stages Amps Qty RLA LRA MCC
Qty
FLA
HP
FLA
HP
FLA
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
11
14
21
11
14
21
11
14
21
11
14
21
11
14
21
11
14
21
11
14
21
11
14
21
11
14
21
11
14
21
11
14
21
11
14
21
108
111
119
116
119
126
123
126
133
132
135
142
121
124
133
130
133
140
137
140
147
146
149
156
153
156
165
162
165
172
169
172
179
178
181
188
110
125
125
125
125
150
150
150
150
150
150
175
125
125
150
150
150
150
150
150
150
175
175
175
175
175
175
175
175
175
175
175
200
200
200
200
10
14
21
27
34
14
21
27
34
14
21
27
34
15
20
25
10
15
20
25
10
15
20
25
E4
E8
E1
40
1
2
3
46
4
4
4
16.7
16.7
16.7
114
114
114
26
26
26
4
4
4
2.9
460-3-60
80
92
2.9
108
125
2.9
Johnson Controls Unitary Products
41
882108-YIM-B-1012
TABLE 28: ELECTRICAL DATA 40 TON W/ELECTRIC HEAT AND POWER EXHAUST R-410A (CONTINUED)
2
Compressors
(each)
OD Fan Motors Supply Blower
(each) Motor
Max Fuse /
Electric Heat Option
Pwr Exh Motor
1
3
MCA
Breaker
Size
(Amps)
Voltage
(Amps)
Model KW Stages Amps Qty RLA LRA MCC
Qty
FLA
HP
FLA
HP
FLA
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
15
7.5
10
0
9
11
17
9
81
83
90
10
11
17
22
27
11
17
22
27
11
17
22
27
90
90
100
100
100
110
110
110
110
125
125
125
110
110
125
125
125
125
125
125
125
150
150
150
150
150
150
150
150
150
150
150
175
175
175
0
88
15
20
25
10
15
20
25
10
15
20
25
11
17
9
90
96
E4
E8
E1
40
1
2
3
40
4
4
4
12.2
12.2
12.2
80
80
80
19
19
19
4
4
4
2.2
94
11
17
9
96
102
100
102
108
103
105
113
111
113
119
117
119
125
123
125
131
131
133
141
139
141
147
145
147
153
151
153
0
11
17
9
11
17
9
11
17
9
575-3-60
80
80
2.2
11
17
9
11
17
9
11
17
9
11
17
9
108
108
2.2
11
17
9
11
0
1.
Minimum Circuit Ampacity.
2.
3.
Dual Element, Time Delay Type.
HACR type per NEC.
42
Johnson Controls Unitary Products
882108-YIM-B-1012
DRILL & BOLT
THROUGH UNIT
SHEET METAL
(4 PLACES)
31"
MAXIMUM
6-1/2"
MINIMUM
34"
*
®
UNISTRUT
1-5/8" W x 7/8" H
OR EQUIVALENT
47"
*34 INCHES IS THE MINIMUM LENGTH REQUIRED TO
MOUNT TO THE FOUR POINTS SHOWN. THE RAILS CAN
BE EXTENDED TO MOUNT A TALLER DISCONNECT
SWITCH, BUT THESE FOUR POINTS SHOULD BE USED
TO MOUNTTHE RAILS TO THE UNIT.
MAXIMUM DOOR SWING
OF HEAT SECTION
DOOR WHEN OPEN
FIGURE 15 - FIELD INSTALLED DISCONNECT
15.00
FIGURE 16 - 40 TON CONDENSER DETAIL
Johnson Controls Unitary Products
43
882108-YIM-B-1012
2
3
5
.
0
0
9
5
.
0
9
3
8
.
5
9
2
6
.
0
0
7
1
.
6
1
R
E
T
U
R
N
S
U
P
P
L
Y
8
3
.
0
0
A
I
R
A
I
R
O
P
E
N
I
N
G
O
P
E
N
I
N
G
8
7
.
0
0
1
1
.
3
9
4
.
0
0
2
.
0
0
1
4
.
0
0
I
n
s
u
l
a
t
i
o
n
E
d
g
e
P
r
o
t
e
c
t
o
r
(
S
h
e
e
t
M
e
t
a
l
N
o
s
e
P
i
e
c
e
)
A
A
F
I
E
L
D
S
U
P
P
L
I
E
D
T
y
p
i
c
a
l
I
n
s
u
l
a
t
i
o
n
D
U
C
T
A
B
A
B
-
-
I
I
F
F
U
U
N
N
I
I
T
T
I
I
S
S
N
A
O
T
I
N
S
T
A
L
L
E
D
S
E
E
S
E
C
T
I
O
N
"
A
-
A
"
L
R
E
A
D
Y
I
N
S
T
A
L
L
E
D
N
O
T
E
:
P
r
o
t
e
c
t
i
n
s
u
l
a
t
i
o
l
n
w
i
t
h
a
s
h
e
e
t
m
e
t
a
l
n
d
o
u
s
c
e
t
p
i
e
c
k
e
.
w
h
e
n
i
n
s
t
a
l
i
n
g
a
i
n
t
e
r
n
a
l
l
y
i
n
s
u
l
a
t
e
d
w
o
r
T
Y
P
I
C
A
L
D
U
C
T
I
N
S
T
A
L
L
A
T
I
O
N
S
B
A
S
E
R
A
I
L
B
A
S
E
R
A
I
L
C
R
O
S
S
-
S
E
C
T
I
O
N
(
Y
O
R
K
U
N
I
T
)
1
.
2
5
"
C
U
R
B
G
A
S
K
E
T
1
.
7
5
"
4
.
6
3
"
2
.
5
0
"
1
.
5
0
"
2
"
X
4
"
N
A
I
L
E
R
(
1
4
.
0
0
)
2
.
0
0
"
1
4
G
A
.
G
A
L
V
S
T
E
E
L
R
O
O
F
C
U
R
B
S
E
C
T
I
O
N
"
A
-
A
"
FIGURE 17 - PARTIAL ROOF CURB MODEL 1RC0455P
44
Johnson Controls Unitary Products
882108-YIM-B-1012
order to use the indoor blower tables for high altitude applica-
tions, certain corrections are necessary.
CFM, STATIC PRESSURE, AND POWER - ALTI-
TUDE AND TEMPERATURE CORRECTIONS
A centrifugal fan is a "constant volume" device. This means
that, if the rpm remains constant, the CFM delivered is the
same regardless of the density of the air. However, since the
air at high altitude is less dense, less static pressure will be
generated and less power will be required than a similar
application at sea level. Air density correction factors are
The information below should be used to assist in application
of product when being applied at altitudes at or exceeding
1000 feet above sea level.
The air flow rates listed in the standard blower performance
tables are based on standard air at sea level. As the altitude
or temperature increases, the density of air decreases. In
TABLE 29: ALTITUDE CORRECTION FACTORS
ALTITUDE (FEET)
AIR TEMP
0
1000
1.022
1.002
0.982
0.964
0.947
0.929
0.912
2000
0.986
0.966
0.948
0.930
0.913
0.897
0.880
3000
0.950
0.931
0.913
0.896
0.880
0.864
0.848
4000
0.916
0.898
0.880
0.864
0.848
0.833
0.817
5000
0.882
0.864
0.848
0.832
0.817
0.802
0.787
6000
0.849
0.832
0.816
0.801
0.787
0.772
0.758
7000
0.818
0.802
0.787
0.772
0.758
0.744
0.730
8000
0.788
0.772
0.757
0.743
0.730
0.716
0.703
9000
0.758
0.743
0.729
0.715
0.702
0.689
0.676
10000
0.729
0.715
0.701
0.688
0.676
0.663
0.651
40
50
1.060
1.039
1.019
1.000
0.982
0.964
0.946
60
70
80
90
100
The examples below will assist in determining the airflow per-
formance of the product at altitude.
blower tables to select the blower speed and the BHP
requirement.
Example 1: What are the corrected CFM, static pressure,
and BHP at an elevation of 5,000 ft. if the blower performance
data is 6,000 CFM, 1.5 IWC and 4.0 BHP?
Solution: As in the example above, no temperature informa-
tion is given so 70°F is assumed.
The 1.5" static pressure given is at an elevation of 5,000 ft.
The first step is to convert this static pressure to equivalent
sea level conditions.
Solution: At an elevation of 5,000 ft the indoor blower will still
deliver 6,000 CFM if the rpm is unchanged. However, Table
Since no temperature data is given, we will assume an air
be 0.832.
Sea level static pressure = 1.5 / .832 = 1.80"
Enter the blower table at 6000 sCFM and static pressure of
1.8". The rpm listed will be the same rpm needed at 5,000 ft.
Corrected static pressure = 1.5 x 0.832 = 1.248 IWC
Corrected BHP = 4.0 x 0.832 = 3.328
Suppose that the corresponding BHP listed in the table is 3.2.
This value must be corrected for elevation.
Example 2: A system, located at 5,000 feet of elevation, is to
BHP at 5,000 ft = 3.2 x .832 = 2.66
deliver 6,000 CFM at a static pressure of 1.5". Use the unit
Johnson Controls Unitary Products
45
882108-YIM-B-1012
1, 2
TABLE 30: FAN PERFORMANCE - 25 TON
AVAILABLE EXTERNAL STATIC PRESSURE (IWG)
AIRFLOW CFM
0.2
1.2
2.2
3.2
0.4
1.4
2.4
3.4
0.6
0.8
1.0
3
3
3
3
3
RPM
302
341
380
416
452
492
532
578
623
639
BHP
0.5
0.9
1.2
1.8
2.3
3.2
4.2
5.5
6.8
7.4
RPM
365
396
427
459
491
527
563
605
647
664
BHP
RPM
422
447
473
500
528
561
594
632
671
688
BHP
1.0
1.4
1.8
2.5
3.1
4.0
4.9
6.3
7.6
8.4
RPM
475
495
516
540
565
594
624
659
695
712
BHP
1.3
1.7
2.1
2.8
3.5
4.5
5.4
6.7
8.1
8.9
RPM
523
540
557
578
600
626
653
686
719
736
BHP
1.5
2.0
2.5
3.2
3.9
4.9
5.8
7.2
8.6
9.5
4000
5000
0.7
1.1
1.5
2.1
2.7
3.6
4.5
5.9
7.2
7.9
6000
7000
8000
9000
10000
11000
12000
12500
AVAILABLE EXTERNAL STATIC PRESSURE (IWG)
1.6 1.8
AIRFLOW CFM
2.0
3.0
4.0
3
3
3
3
3
RPM
568
582
596
615
633
658
682
713
743
760
BHP
1.8
2.4
2.9
3.6
4.4
5.3
6.3
7.7
9.1
RPM
609
621
633
650
666
688
710
739
767
784
BHP
2.2
2.7
3.3
4.0
4.8
5.8
6.8
8.2
9.7
RPM
646
657
669
683
698
718
738
765
791
807
BHP
2.5
3.1
3.7
4.5
5.3
6.3
7.3
8.8
RPM
681
692
702
716
729
747
766
791
815
830
BHP
2.8
3.5
4.1
4.9
5.7
6.8
7.8
9.3
RPM
713
724
735
747
759
776
793
816
839
853
BHP
3.2
3.9
4.5
5.4
6.2
7.3
8.4
9.9
4000
5000
6000
7000
8000
9000
10000
11000
12000
12500
10.2
11.2
10.8
11.7
11.4
12.3
10.0
10.6
AVAILABLE EXTERNAL STATIC PRESSURE (IWG)
2.6 2.8
AIRFLOW CFM
3
3
3
3
3
RPM
743
754
766
777
788
804
819
841
863
876
BHP
3.5
RPM
770
783
795
806
817
831
845
866
887
899
BHP
3.9
RPM
796
810
824
834
844
857
870
890
910
921
BHP
4.3
5.1
5.9
6.8
7.7
8.9
RPM
821
836
851
861
871
883
896
914
933
943
BHP
4.6
RPM
844
861
878
888
898
909
920
938
956
965
BHP
5.0
4000
5000
4.3
4.7
5.5
5.9
6000
5.0
5.4
6.4
6.8
7000
5.8
6.3
7.3
7.8
8000
6.7
7.2
8.2
8.8
9000
7.8
8.3
9.5
10.0
11.3
12.9
14.5
15.5
10000
11000
12000
12500
8.9
9.5
10.1
11.7
13.2
14.2
10.7
12.3
13.9
14.8
10.5
12.0
12.9
11.1
12.6
13.6
AVAILABLE EXTERNAL STATIC PRESSURE (IWG)
3.6 3.8
AIRFLOW CFM
3
3
3
3
3
RPM
867
885
903
914
924
934
944
961
978
986
BHP
5.4
RPM
890
909
928
939
949
959
968
984
1000
1008
BHP
5.8
RPM
912
BHP
6.2
RPM
935
BHP
6.6
RPM
958
BHP
6.9
4000
5000
6.4
6.8
932
7.2
956
7.6
979
8.0
6000
7.3
7.8
953
8.2
976
8.7
1000
1012
1023
1030
1037
1051
1064
1070
9.1
7000
8.3
8.8
963
9.4
988
9.9
10.5
11.8
13.2
14.5
16.2
18.0
19.0
8000
9.3
9.9
974
10.5
11.9
13.2
14.9
16.6
17.5
999
11.2
12.5
13.8
15.6
17.3
18.2
9000
10.6
11.9
13.6
15.2
16.2
11.2
12.6
14.2
15.9
16.8
983
1007
1015
1029
1043
1050
10000
11000
12000
13000
992
1007
1022
1029
1.
Fan performance is based on wet evaporator coils, clean 2” throwaway filters and system/cabinet effects at standard air density and 0 feet elevation.
BHP includes drive losses.
2.
3.
4. Shaded RPMs require Class II blower.
Johnson Controls Unitary Products
47
882108-YIM-B-1012
25 Ton Forward Curve
8.0
7.5
7.0
6.5
6.0
5.5
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
A
0.0
0
1
2
3
4
5
6
7
8
9
10
11
12
13
CFM (x1000)
A - Standard Unit
Note: Standard Unit includes wet evaporator coil, clean 2" throwaway filters, system
and cabinet effects at standard air density and 0' elevation.
FIGURE 19 - FAN PERFORMANCE - 25 TON
48
Johnson Controls Unitary Products
882108-YIM-B-1012
1, 2
0.4
TABLE 31: FAN PERFORMANCE - 30 TON
AVAILABLE EXTERNAL STATIC PRESSURE (IWG)
0.6
AIRFLOW (CFM)
0.2
1.2
2.2
3.2
0.8
1.8
2.8
3.8
1.0
3
3
3
3
3
RPM
405
444
483
520
558
603
647
687
728
767
BHP
1.3
1.9
2.6
3.5
4.5
5.7
7.0
8.9
RPM
450
485
519
554
588
629
671
709
748
786
BHP
1.6
2.3
2.9
3.9
4.8
6.2
7.5
9.3
RPM
494
524
555
586
618
656
695
731
768
805
BHP
2.0
2.7
3.3
4.3
5.2
6.7
8.1
9.9
RPM
535
562
589
618
647
683
718
753
789
825
BHP
2.3
3.0
3.7
4.7
5.7
7.2
8.6
RPM
575
599
623
649
676
709
742
776
809
845
BHP
2.7
6000
7000
3.4
8000
4.2
9000
5.2
10000
11000
12000
13000
14000
15000
6.2
7.7
9.2
10.4
12.2
14.4
10.9
12.7
15.0
10.7
12.7
11.2
13.2
11.6
13.8
AVAILABLE EXTERNAL STATIC PRESSURE (IWG)
1.6
AIRFLOW (CFM)
1.4
2.4
3.4
2.0
3.0
4.0
3
3
3
3
3
RPM
612
634
655
680
704
735
766
798
830
864
BHP
3.1
RPM
649
668
687
710
732
761
790
820
851
884
BHP
3.5
4.3
5.1
6.1
7.2
8.7
RPM
683
701
719
739
760
787
814
843
872
904
BHP
3.9
4.7
5.5
6.6
7.7
9.3
RPM
717
733
749
768
787
812
837
865
893
923
BHP
4.3
RPM
748
763
779
796
813
837
861
887
914
943
BHP
4.7
6000
7000
3.8
5.1
5.6
8000
4.6
6.0
6.5
9000
5.6
7.2
7.7
10000
11000
12000
13000
14000
15000
6.7
8.3
8.9
8.2
9.8
10.4
12.0
13.9
15.9
18.3
9.7
10.3
12.1
13.9
16.3
10.8
12.7
14.6
16.9
11.4
13.3
15.2
17.6
11.5
13.3
15.6
AVAILABLE EXTERNAL STATIC PRESSURE (IWG)
2.6
AIRFLOW (CFM)
3
3
3
3
3
RPM
779
793
807
823
839
862
884
909
935
963
BHP
5.1
RPM
808
822
836
850
865
886
907
931
956
982
BHP
5.5
RPM
837
850
863
877
890
910
930
953
976
1002
BHP
6.0
RPM
864
877
890
902
915
934
953
975
997
1021
BHP
6.4
RPM
890
903
916
928
940
957
975
996
1017
1040
BHP
6.9
6000
7000
6.1
6.6
7.0
7.5
8.1
8000
7.0
7.6
8.1
8.6
9.2
9000
8.3
8.8
9.4
10.0
11.3
12.9
14.4
16.5
18.7
21.1
10.6
12.0
13.5
15.0
17.2
19.4
21.8
10000
11000
12000
13000
14000
15000
9.5
10.1
11.6
13.2
15.2
17.3
19.6
10.7
12.2
13.8
15.9
18.0
20.4
11.0
12.5
14.6
16.6
18.9
AVAILABLE EXTERNAL STATIC PRESSURE (IWG)
3.6
AIRFLOW (CFM)
3
3
3
3
3
RPM
916
BHP
7.4
RPM
940
BHP
7.9
RPM
964
BHP
8.3
RPM
988
BHP
8.8
RPM
1011
1023
1035
1045
1055
1069
1082
1097
1113
1134
BHP
9.3
6000
7000
928
8.6
953
9.1
977
9.6
1000
1013
1023
1033
1047
1061
1078
1094
1115
10.1
11.5
13.0
14.5
16.1
17.8
20.1
22.4
24.9
10.7
12.0
13.6
15.1
16.8
18.5
20.8
23.1
25.7
8000
941
9.8
965
10.3
11.8
13.2
14.8
16.4
18.6
20.9
23.3
989
10.9
12.4
13.9
15.5
17.1
19.4
21.6
24.1
9000
952
11.2
12.6
14.1
15.7
17.9
20.2
22.6
976
1000
1010
1025
1040
1058
1076
1097
10000
11000
12000
13000
14000
15000
964
987
981
1003
1019
1038
1056
1078
997
1017
1037
1059
1.
Fan performance is based on wet evaporator coils, clean 2” throwaway filters and system/cabinet effects at standard air density and 0 feet elevation.
BHP includes drive losses.
2.
3.
4. Shaded RPMs require Class II blower.
Johnson Controls Unitary Products
49
882108-YIM-B-1012
8.0
7.5
7.0
6.5
6.0
5.5
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
1
5
8
0
0
7
0
0
A
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
CFM (x1000)
A - Standard Unit
Note: Standard Unit includes wet evaporator coil, clean 2" throwaway filters, system
and cabinet effects at standard air density and 0' elevation.
FIGURE 23 - FAN PERFORMANCE - 30 TON
FIGURE 20 - FAN PERFORMANCE - 30 TON
50
Johnson Controls Unitary Products
882108-YIM-B-1012
1,2
TABLE 32: FAN PERFORMANCE - 40 TON
AVAILABLE EXTERNAL STATIC PRESSURE (IWG)
0.6
AIRFLOW (CFM)
0.2
1.2
2.2
3.2
0.4
0.8
1.8
2.8
3.8
1.0
3
3
3
3
3
RPM
367
396
424
454
484
507
530
560
589
613
638
BHP
1.9
2.5
3.1
4.0
5.0
5.9
6.9
8.4
9.8
RPM
409
433
458
486
513
535
557
584
612
635
659
BHP
2.3
3.0
3.6
4.5
5.5
6.5
7.6
9.1
RPM
448
469
491
516
542
562
583
609
634
657
680
BHP
2.8
3.5
4.1
5.1
6.1
7.1
8.2
9.7
RPM
485
504
523
546
569
589
608
632
656
678
700
BHP
3.3
4.0
4.6
5.6
6.6
7.8
8.9
RPM
519
536
553
574
596
614
633
655
678
699
721
BHP
3.8
8000
9000
4.5
10000
11000
12000
13000
14000
15000
16000
17000
18000
5.2
6.2
7.2
8.4
9.6
10.4
12.0
13.8
15.7
11.2
12.7
14.6
16.5
10.5
12.4
14.3
11.3
13.1
15.0
11.7
13.6
AVAILABLE EXTERNAL STATIC PRESSURE (IWG)
1.6
AIRFLOW (CFM)
1.4
2.4
3.4
2.0
3.0
4.0
3
3
3
3
3
RPM
552
567
582
602
621
639
657
678
699
720
740
BHP
4.2
RPM
583
596
610
628
647
664
681
700
720
740
760
BHP
4.7
5.5
6.3
7.4
8.5
9.7
RPM
612
624
637
654
671
687
704
722
741
760
780
BHP
5.2
6.0
6.9
8.0
9.1
RPM
639
651
663
679
695
710
726
744
761
780
799
BHP
5.7
RPM
665
677
688
703
718
733
748
765
781
799
818
BHP
6.2
8000
9000
5.0
6.6
7.1
10000
11000
12000
13000
14000
15000
16000
17000
18000
5.7
7.4
8.0
6.8
8.6
9.2
7.9
9.8
10.4
11.8
13.2
14.9
16.5
18.6
20.6
9.1
10.4
11.7
13.3
15.0
16.9
18.9
11.1
12.5
14.1
15.8
17.8
19.7
10.3
11.9
13.5
15.4
17.3
11.0
12.6
14.2
16.1
18.1
AVAILABLE EXTERNAL STATIC PRESSURE (IWG)
2.6
AIRFLOW (CFM)
3
3
3
3
3
RPM
690
701
712
726
740
755
769
785
801
819
836
BHP
6.7
RPM
713
725
736
749
762
776
790
805
820
837
855
BHP
7.2
RPM
736
747
759
771
784
797
811
825
839
856
873
BHP
7.7
RPM
758
769
781
793
805
818
831
845
858
874
890
BHP
8.2
RPM
779
790
802
814
826
838
851
864
877
892
908
BHP
8.8
8000
9000
7.7
8.2
8.8
9.4
10.0
11.2
12.6
13.9
15.5
17.1
18.9
20.6
22.9
25.1
10000
11000
12000
13000
14000
15000
16000
17000
18000
8.7
9.3
9.9
10.6
11.9
13.2
14.7
16.3
18.0
19.8
22.0
24.2
9.9
10.5
11.8
13.3
14.7
16.4
18.1
20.3
22.4
11.2
12.5
14.0
15.5
17.2
19.0
21.1
23.3
11.1
12.5
14.0
15.6
17.3
19.4
21.5
AVAILABLE EXTERNAL STATIC PRESSURE (IWG)
3.6
AIRFLOW (CFM)
3
3
3
3
3
RPM
799
811
823
834
846
858
870
882
895
910
925
BHP
9.3
RPM
819
831
843
855
866
877
889
901
913
928
-
BHP
RPM
839
851
863
874
885
896
908
919
931
945
-
BHP
RPM
859
871
883
894
905
915
926
937
948
962
-
BHP
11.2
12.6
13.9
15.4
16.8
18.6
20.3
22.2
24.2
-
RPM
879
891
902
913
924
934
944
955
966
-
BHP
11.9
13.3
14.6
16.1
17.5
19.3
21.1
23.1
25.1
-
8000
9000
9.9
10.6
11.9
13.3
14.7
16.1
17.8
19.5
21.4
23.3
25.6
-
10.6
11.9
13.3
14.6
16.3
17.9
19.7
21.5
23.8
26.0
11.3
12.6
14.0
15.4
17.0
18.7
20.5
22.4
24.7
-
10000
11000
12000
13000
14000
15000
16000
17000
18000
-
-
-
1.
Fan performance is based on wet evaporator coils, clean 2” throwaway filters and system/cabinet effects at standard air density and 0 feet elevation.
BHP includes drive losses.
2.
3.
4. Shaded RPMs require Class II blower.
Johnson Controls Unitary Products
51
882108-YIM-B-1012
40 Ton Forward Curve
7.0
6.5
6.0
5.5
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
2
0
15
7
1
0
0
0
A
6
0
0
5
0
0
300
0.0
0
2
4
6
8
10
CFM (x1000)
12
14
16
18
20
A - Standard Unit
Note: Standard Unit includes wet evaporator coil, clean 2" throwaway filters, system
and cabinet effects at standard air density and 0' elevation.
FIGURE 21 - FAN PERFORMANCE - 40 TON
52
Johnson Controls Unitary Products
882108-YIM-B-1012
1, 2
TABLE 33: COMPONENT STATIC RESISTANCE
CFM
COMPONENT COIL
LOSSES
4,000
6,000
8,000
10,000
12,000
14,000
16,000
18,000
COIL LOSSES 25T
3 Row, 16 FPI, dry
3 Row, 16 FPI, wet
-0.14
-0.18
-0.24
-0.34
-0.45
-
-
-
-
-
-
Baseline
Baseline
Baseline
Baseline
Baseline
COIL LOSSES 30T
4 Row, 16 FPI, dry
4 Row, 16 FPI, wet
-0.18
-0.22
-0.32
-0.45
-0.60
-0.76
-
-
-
-
Baseline
Baseline
Baseline
Baseline
Baseline
Baseline
COIL LOSSES 40T
4 Row, 16 FPI, dry
4 Row, 16 FPI, wet
-0.15
-0.22
-0.26
-0.31
-0.42
-0.53
-.0.65
-0.79
Baseline
Baseline
Baseline
Baseline
Baseline
Baseline
Baseline
Baseline
FILTER LOSSES
2” TA or HI EFF.
Rigid 6”, 65%
Rigid 6”, 95%
Baseline
0.06
Baseline
0.12
Baseline
0.19
Baseline
0.27
Baseline
0.36
Baseline
0.46
Baseline
0.58
Baseline
0.70
0.13
0.26
0.41
0.60
0.81
1.04
1.29
1.57
IGV LOSSES
25 & 30 Ton F.C.
40 Ton F.C.
0.02
0.01
0.05
0.03
0.08
0.05
0.13
0.08
0.19
0.11
0.26
0.15
0.34
0.19
0.43
0.25
GAS HEAT
267 MBH Heat
533 MBH Heat
800 MBH Heat
0.07
0.14
0.21
0.11
0.21
0.32
0.14
0.28
0.42
0.18
0.35
0.53
0.21
0.42
0.64
0.25
0.49
0.74
0.28
0.57
0.85
0.32
0.64
0.95
ELECTRIC HEAT
40KW
0.01
0.01
0.02
0.02
0.04
0.05
0.04
0.08
0.10
0.06
0.13
0.15
0.10
0.20
0.31
0.20
0.31
0.43
0.31
0.44
0.53
0.40
0.56
0.68
80KW
108KW
ECONOMIZER
0.03
0.02
0.06
0.05
0.10
0.08
0.15
0.13
0.21
0.18
0.28
0.25
0.35
0.32
0.43
0.41
POWER EXHAUST
1.
Baseline losses based on system/cabinet effects, wet standard coil and 2” throwaway filters at 70°F, 0 feet elevation with standard air.
2.
Johnson Controls Unitary Products
53
882108-YIM-B-1012
TABLE 34: SUPPLY FAN MOTOR AND DRIVE DATA
Motor
Motor Pulley
Blower Pulley
Belts
Blower
RPM
Range
Motor
Efficiency Pitch Dia
Model
25 Ton
30 Ton
40 Ton
Motor
Efficiency
(Std. Motor)
Frame
Size
Bore
(Inches)
Pitch Dia
(Inches)
Bore
(Inches)
HP
Designation
Qty
(Ultra Hi
Eff Opt)
(Inches)
567
692
793
894
617
743
856
907
617
652
728
780
7.5
10
15
20
10
15
20
25
10
15
20
25
213T
215T
254T
256T
215T
254T
256T
284T
215T
254T
256T
284T
88.5
89.5
91
91.7
91
4.5
5.5
6.3
7.1
4.9
5.9
6.7
7.1
4.9
5.1
5.7
6.1
1-3/8
1-3/8
1-5/8
1-5/8
1-3/8
1-5/8
1-5/8
1-7/8
1-3/8
1-5/8
1-5/8
1-7/8
13.9
13.9
13.9
13.9
13.9
13.9
13.7
13.7
13.9
13.7
13.7
13.7
2-3/16
2-3/16
2-3/16
2-3/16
2-3/16
2-3/16
2-3/16
2-3/16
2-7/16
2-7/16
2-7/16
2-7/16
BX56
BX56
2
2
2
2
2
2
2
2
2
2
2
2
91.7
93
BX56
91
BX56
89.5
91
91
BX56
91.7
93
BX56
91
5VX610
5VX610
BX67
91.7
89.5
91
93.6
91
91.7
93
5VX710
5VX710
5VX710
91
91.7
93.6
TABLE 35: EXHAUST FAN DRIVE DATA
Motor
Motor Pulley
Blower Pulley
Belts
Blower
Model
RPM
Range
Motor Eff
(Std.
Motor)
Motor
Eff (Hi
Eff opt)
Frame
Size
Pitch Dia
(Inches)
Bore
(Inches)
Pitch Dia
(Inches)
Bore
(Inches)
HP
Designation
Qty
758
852
976
852
976
1069
852
976
1069
5
213T
215T
215T
213T
215T
254T
184T
215T
254T
87.5
88.5
89.5
84
89.5
91.7
91
4.9
5.5
6.3
5.5
6.3
6.9
5.5
6.3
6.9
1-3/8
1-3/8
1-5/8
1-3/8
1-3/8
1-3/8
1-3/8
1-3/8
1-3/8
11.3
11.3
11.3
11.3
11.3
11.3
11.3
11.3
11.3
2-3/16
2-3/16
BX63
BX63
BX63
B65
2
2
2
2
2
2
2
2
2
25
Ton
7.5
10
7.5
10
15
7.5
10
15
2-3/16
86.5
89.5
89.5
86.5
89.5
89.5
1-11/16
1-11/16
1-11/16
1-11/16
1-11/16
1-11/16
30
Ton
86.5
85.7
84
B65
B65
B65
40
Ton
86.5
85.7
B65
B65
54
Johnson Controls Unitary Products
882108-YIM-B-1012
1
TABLE 36: POWER EXHAUST - ONE FORWARD CURVED FAN 25 TON
AVAILABLE EXTERNAL STATIC PRESSURE (IWG)
0.4 0.6 0.8
0.2
1.0
AIRFLOW CFM
2
2
2
2
2
RPM
RPM
RPM
RPM
RPM
BHP
BHP
---
BHP
---
BHP
0.3
0.5
0.9
1.5
2.4
3.5
4.8
6.5
9.1
BHP
0.4
0.7
1.1
1.7
2.6
3.7
5.2
6.9
9.4
2000
3000
4000
5000
6000
7000
8000
9000
10000
---
---
450
496
566
646
731
821
911
1004
524
531
562
609
679
759
844
932
1022
609
605
626
663
717
787
868
953
1041
685
672
687
717
762
820
892
974
1059
0.6
0.8
1.2
1.8
2.7
4.0
5.5
7.3
9.8
---
---
0.4
0.8
1.4
2.2
3.3
4.3
6.2
8.8
442
524
612
703
791
877
967
0.7
1.2
1.9
3.0
3.8
5.8
8.4
AVAILABLE EXTERNAL STATIC PRESSURE (IWG)
1.4 1.6 1.8
1.2
2.0
AIRFLOW CFM
2
2
2
2
2
RPM
RPM
RPM
RPM
RPM
BHP
0.7
1.0
1.4
2.0
2.9
4.2
5.7
7.6
BHP
0.8
1.1
1.5
2.2
3.1
4.4
6.0
8.0
BHP
0.9
1.3
1.7
2.4
3.3
4.6
6.2
8.3
BHP
1.1
1.5
1.9
2.6
3.6
4.8
6.5
8.5
BHP
1.2
1.7
2.1
2.8
3.8
5.0
6.8
8.8
2000
3000
4000
5000
6000
7000
8000
9000
10000
754
736
743
768
806
857
921
995
1077
819
797
799
818
850
895
953
1020
1096
878
854
850
865
895
933
985
1048
1119
933
909
986
961
900
948
911
955
937
978
972
1010
1052
1103
1167
1018
1075
1143
10.1
10.4
10.8
11.1
11.4
1.
Fan performance is based on system/cabinet effects and back draft damper effects at standard air density and 0 feet of elevation.
BHP includes 5% drive losses.
2.
Johnson Controls Unitary Products
55
882108-YIM-B-1012
1
TABLE 37: POWER EXHAUST - TWO FORWARD CURVED FANS - 30 & 40 TON
AVAILABLE EXTERNAL STATIC PRESSURE (IWG)
0.2
0.4
.06
0.8
1.0
AIRFLOW CFM
2 3
2 3
BHP
2 3
2 3
2 3
RPM
RPM
RPM
RPM
RPM
BHP
BHP
BHP
BHP
4000
5000
363
402
445
494
544
597
651
705
761
817
874
932
989
0.32
468
494
527
565
609
654
703
753
805
858
912
967
1022
0.53
560
576
602
633
670
711
0.74
641
652
670
697
729
765
805
847
893
939
988
1037
1088
0.95
716
722
735
757
784
817
853
893
934
979
1025
1072
-
1.16
1.47
2.00
2.52
3.15
3.89
4.83
5.99
7.25
8.82
10.50
12.60
-
0.53
0.84
1.26
1.79
2.42
3.26
4.31
5.46
6.93
8.51
10.40
12.60
0.74
1.05
1.58
2.10
2.84
3.68
4.73
5.88
7.35
9.03
10.92
13.23
1.05
1.37
1.79
2.42
3.15
3.99
5.15
6.30
7.77
9.56
11.55
13.76
1.26
1.68
2.10
2.73
3.47
4.41
5.57
6.83
8.30
9.98
12.08
14.28
6000
7000
8000
9000
10000
11000
12000
13000
14000
15000
16000
754
801
849
899
950
1002
1055
AVAILABLE EXTERNAL STATIC PRESSURE (IWG)
1.6
1.2
1.4
1.8
2
AIRFLOW CFM
2 3
2 3
BHP
2 3
2 3
2 3
BHP
RPM
RPM
RPM
RPM
RPM
BHP
BHP
BHP
4000
5000
783
788
798
814
837
866
900
936
976
1018
1061
1107
1.47
844
848
1.68
903
906
1.89
956
959
2.21
1008
1011
1014
1021
1033
1050
1073
1101
1131
1165
1202
1240
2.42
1.79
2.21
2.84
3.47
4.31
5.25
6.41
7.77
9.35
11.13
13.23
2.10
2.63
3.15
3.89
4.73
5.67
6.93
8.30
9.87
11.66
13.76
2.42
2.94
3.47
4.20
5.15
6.20
7.35
8.72
10.40
12.29
14.39
2.63
3.26
3.89
4.62
5.57
6.62
7.88
9.24
10.92
12.92
14.91
2.94
3.57
4.20
5.04
5.99
7.14
8.30
9.77
11.55
13.44
15.54
6000
855
911
963
7000
869
922
972
8000
889
938
987
9000
915
961
1007
1032
1061
1094
1129
1167
1208
10000
11000
12000
13000
14000
15000
945
989
979
1020
1055
1093
1133
1175
1016
1055
1098
1141
1.
2.
3.
Fan performance is based on system/cabinet effects and back draft damper effects at standard air density and 0 feet elevation.
BHP includes the sum of both exhaust fan motors.
BHP includes 5% drive losses.
Johnson Controls Unitary Products
57
882108-YIM-B-1012
condenser fans are rotating in the correct direction and the
supply fan is not, it will be necessary to switch leads on the
output side of the VFD, since changing phase on the input
side of a VFD does not change rotation on the output side. If
the VFD is equipped with a bypass, verify that rotation is cor-
rect in the bypass mode.
START-UP
COMPRESSOR ROTATION
toms of reverse compressor operations). Millennium units are
properly phased at the factory. If the blower, condenser fan,
or compressor, rotate in the wrong direction at start-up, the
electrical connection to the unit is misphased. Change the
NOTE: If unit is equipped with power exhaust fans or return
air fan also check them for proper rotation.
incoming line connection phasing to obtain proper rotation.
VFD units with bypass must not have the bypass activated
unless all individual space dampers are full open. It is the
responsibility of the installer to interconnect the bypass mode
to the signal to open all boxes on the circuit.
Scroll compressors require proper rotation to oper-
ate correctly. Units are properly phased at the fac-
tory. DO NOT change the internal wiring to make
the blower, condenser fans or compressor rotate
correctly.
BELT TENSION
The tension on the belt should be adjusted as shown in Fig-
NOTE: If unit is equipped with power exhaust fans or return
air fan check belt tension and adjust as necessary.
SUPPLY AIR FAN INSTRUCTIONS
C
A
U
T
I
O
N
CHECK BLOWER BEARING SET SCREWS
P
R
O
C
E
D
U
R
E
F
b
O
R
A
h
D
J
U
i
S
T
I
N
G
t
B
E
L
T
T
E
N
S
I
O
N
•
The bearing set screws on the supply air blower are
properly torqued before shipment. However, in transit
they may loosen. Prior to start up they should be
rechecked. The set screws are 3/8" and the torque range
is 200 - 215 in.-lbs.
1
2
3
.
.
.
L
o
o
s
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n
f
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(
s
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)
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6
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p
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s
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A
d
j
u
s
t
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n
t
T
a
b
l
e
.
NOTE: If a unit is equipped with exhaust fans, those bear-
ing set screws should also be rechecked. The set
screws are 1/4 inch and the torque range is 70 - 87
in.-lbs.
S
P
A
N
L
E
N
G
T
H
D
E
F
L
E
C
T
I
O
N
F
O
R
C
E
CHECKING SUPPLY AIR CFM
The RPM of the supply air blower will depend on the required
CFM, the static pressure resistances of the unit components
tances of both the supply and the return air duct systems.
With this information, the RPM for the supply air blower can
be determined from the blower performance data in Tables
for the fixed pitch pulleys supplied on the unit.
"
A
"
M
O
T
O
R
B
A
S
E
D
E
T
A
I
L
"
B
"
T
r
d
s
e
n
s
i
g
o
n
n
e
w
b
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l
t
s
a
t
t
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m
a
x
i
m
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u
m
m
d
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f
l
a
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c
t
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f
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r
c
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c
o
m
m
e
n
d
f
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d
.
C
h
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c
k
t
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b
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t
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t
2
4
h
n
r
s
.
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f
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p
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.
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-
t
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f
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c
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v
a
l
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s
.
The supply air CFM must be within the limitations shown in
exceed the rpm limitations of Class I.
5
.
A
f
t
e
r
a
d
j
u
s
t
i
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g
,
r
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m
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b
a
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t
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c
h
a
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n
e
l
.
FIGURE 24 - BELT TENSION ADJUSTMENT
AIR BALANCE
NOTE: If unit is equipped with power exhaust fans or return
Start the supply air blower motor. Adjust the resistances in
both the supply and the return air duct systems to balance
the air distribution throughout the conditioned space. The job
specifications may require that this balancing be done by
someone other than the equipment installer.
FAN ROTATION
Check for proper supply air blower rotation. If fans are rotat-
ing backwards the line voltage to unit point of power connec-
tion is misphased (see Compressor Rotation above.) If the
Johnson Controls Unitary Products
59
882108-YIM-B-1012
CHECKING AIR QUANTITY
On VAV and VFD units be certain all IGV’s on VAV
unit are full open, VFD drive is set to maximum
output, exhaust dampers are closed and individual
space damper boxes are full open.
VFD units with bypass must not have the bypass
activated unless all individual space dampers are
full open.
TABLE 38: BELT ADJUSTMENT
FAN MOTOR HORSE POWER
30 TON FORWARD CURVED SUPPLY FAN
Belt Deflection Force (lbs) new belts
Belt Deflection Force (lbs) old belts
40 TON FORWARD CURVED SUPPLY FAN
Belt Deflection Force (lbs) new belts
Belt Deflection Force (lbs) old belts
30 & 40 TON POWER EXHAUST FAN
Belt Deflection Force (lbs) new belts
Belt Deflection Force (lbs) old belts
25 TON FORWARD CURVE SUPPLY FAN
New Belt
5
7.5
10
SIZE: 22 X 20
10.5 12.6
7.1 8.5
SIZE: 25 X 20
10.5 12.6
7.1 8.5
SIZE: (2) 15 X 15
15
20
25
-
-
-
-
15.2
10.2
22.1
14.8
-
-
-
-
15.2
10.2
15.2
10.2
-
-
7.9
5.3
9.4
6.3
9.4
6.3
-
-
-
-
SIZE: 22 X 20
10.5 12.6
7.1 8.5
-
-
10.5
7.1
15.2
10.2
-
-
Old Belt
25 TON POWER EXHAUST
New Belt
10.5
7.1
10.5
7.1
12.6
8.5
-
-
-
-
-
-
Old Belt
1. Remove the dot plugs from the two 5/16 inch holes in the
blower motor and the filter access doors.
NOTE: De-energize the compressors before taking any test
measurements to assure a dry evaporator coil.
2. Insert at least 8 inch of 1/4 inch metal tubing into each of
these holes for sufficient penetration into the air flow on
both sides of the indoor coil.
3. Using an inclined manometer or other high resolution
pressure measurement device, determine the pressure
drop across a dry evaporator coil. Since the moisture on
an evaporator coil may vary greatly, measuring the pres-
sure drop across a wet coil under field conditions would
be inaccurate. To assure a dry coil, the compressors
should be de-activated while the test is being run.
Failure to properly adjust the total system air quan-
tity can result in extensive blower or duct damage.
After readings have been obtained, remove the tubes and
reinstall the two 5/16 inch dot plugs.
It is especially important to limit the rpm of the fan in VFD-
bypass-equipped units; it may be tempting to set max rpm in
the VFD to less than 60 Hz - but the bypass will go to 60 Hz
immediately on activation.
4. Knowing the pressure drop across a dry coil, the actual
CFM through the unit with clean 2 inch filters, can be
60
Johnson Controls Unitary Products
882108-YIM-B-1012
•
•
•
New drive speed = 1.1194 X 856 = 958.2 RPM
SUPPLY AIR DRIVE ADJUSTMENT
New supply air = 1.1194 X 11,000 = 12,313 CFM
Re-use the existing belts and blower sheave.
Before making any blower speed changes review
the installation for any installation errors, leaks or
undesirable systems effects that can result in loss
of air flow.
New motor BHP = (speed increase)3 x estimated motor
BHP at original start-up with 11,000 CFM and 856 RPM =
(1.119)3 x 11 BHP = 1.4012 x 11 BHP = 15.41 BHP New
motor amps = (speed increase)3 x measured motor amps
at original start-up with 11,000 CFM and 856 RPM.
Even small changes in blower speed can result in
substantial changes in static pressure and BHP.
BHP or AMP draw of the blower motor will
blower speed. Static pressure will increase by the
and 42 are for reference only. All blower speed
changes must be made by qualified personnel with
strict adherence to the fan laws.
.
TABLE 39: BLOWER SPEED RATE OF CHANGE
CHANGE IN
BHP AND
MOTOR
AMPS
CHANGE IN RPM
CFM
TSP
.90
.93
.90
.93
.81
.86
.73
.79
.95
.95
.90
.86
achieve the specified CFM, the speed of the drive may have
to be decreased or increased by changing the pitch diameter
(PD) of the motor sheave as outlined below:
.98
.98
.95
.93
1.00
1.03
1.05
1.08
1.10
1.13
1.15
1.18
1.20
1.00
1.03
1.05
1.08
1.10
1.13
1.15
1.18
1.20
1.00
1.05
1.10
1.16
1.21
1.27
1.32
1.38
1.44
1.00
1.08
1.16
1.24
1.33
1.42
1.52
1.62
1.73
•
(Specified CFM/Measured CFM) X PD of standard
sheave = PD of new sheave.
Use the following tables and the PD calculated per the above
equation to select a new motor sheave.
EXAMPLE
•
•
•
A 30 ton unit was selected to deliver 12,000 CFM with a
20 HP motor and a 856 RPM drive, but the unit is only
delivering 11,000 CFM per Figure 20.
SYSTEM SETPOINTS
Constant Volume and Variable Air Volume:
Use the equation to determine the required PD for the
new motor sheave (12,000 CFM/11,000 CFM X 6.7” =
7.3091 inch).
Thermostat and space sensor offsets must be made external
to the unit. For internal settings, refer to the Settable Parame-
ters in the Unit Control document. All parameters affecting
the unit with that specific set of options and for that specific
application must be reviewed. In many cases, the default set-
tings will be fine - but verify and fine tune where necessary.
Use the 30 ton table to select a Browning 2B5V74 which
will increase the speed of the unit’s drive and its supply
air CFM to 111.9%. Thus select the 7.5” PD at 112%
increase over standard.
Johnson Controls Unitary Products
61
882108-YIM-B-1012
TABLE 40: 25 TON DRIVE ADJUSTMENT
7.5 HP MOTOR & 567 RPM DRIVE
10 HP MOTOR & 692 RPM DRIVE
15 HP MOTOR & 793 RPM DRIVE
20 HP MOTOR & 894 RPM DRIVE
%RPM
& CFM
REQ’D
PD
BROWNING
2B5V_ _
%RPM
& CFM
REQ’D
PD
BROWNING
2B5V_ _
%RPM
& CFM
REQ’D
PD
BROWNING
2B5V_ _
%RPM
& CFM
REQ’D
PD
BROWNING
2B5V_ _
-
-
-
-
82
86
89
93
96
4.5
4.7
4.9
5.1
5.3
42
44
46
48
50
84
87
90
94
97
5.3
5.5
5.7
5.9
6.1
50
52
54
56
58
86
89
91
94
97
6.1
6.3
6.5
6.7
6.9
58
60
62
64
66
-
-
100
104
109
(Std.)4.5
4.7
42
44
46
4.9
(Std.)
5.5
(Std)
6.3
(Std.)
7.1
113
5.1
48
100
52
100
60
100
68
118
5.3
5.5
5.7
-
50
52
54
-
104
107
111
115
118
122
5.7
5.9
6.1
6.3
6.5
6.7
54
56
58
60
62
64
103
106
110
113
116
122
6.5
6.7
6.9
7.1
7.3
7.7
62
64
66
68
70
74
103
108
117
125
-
7.3
7.7
8.3
8.9
-
70
74
80
86
-
122
126
-
-
-
-
-
-
-
-
-
-
TABLE 41: 30 TON DRIVE ADJUSTMENT
10 HP MOTOR & 617 RPM DRIVE
15 HP MOTOR & 743 RPM DRIVE
20 HP MOTOR & 856 RPM DRIVE
25 HP MOTOR & 907 RPM DRIVE
%RPM
& CFM
REQ’D
PD
BROWNING
2B5V_ _
%RPM
& CFM
REQ’D
PD
BROWNING
2B5V_ _
%RPM
& CFM
REQ’D
PD
BROWNING
2B5V_ _
%RPM
& CFM
REQ’D
PD
BROWNING
2B5V_ _
91.8
95.9
4.5
4.7
42
44
86.4
89.8
5.1
5.3
48
50
82.1
85.1
5.5
5.7
54
56
86.3
89.0
6.1
6.3
60
62
(Std.)
4.9
100.0
104.1
108.2
46
48
50
93.2
96.6
5.5
5.7
52
54
56
88.1
91.0
94.0
5.9
6.1
6.3
58
60
62
91.8
94.5
97.3
6.5
6.7
6.9
64
66
68
5.1
5.3
(Std.)
5.9
100.0
(Std.)
7.1
112.2
116.3
5.5
5.7
52
54
103.4
106.8
6.1
6.3
58
60
97.0
6.5
64
66
100.0
105.5
70
74
(Std.)
6.7
100.0
7.5
120.4
5.9
56
58
-
110.2
113.6
116.9
120.3
123.7
6.5
6.7
6.9
7.1
7.3
62
64
66
68
70
103.0
106.0
112.0
120.9
129.9
6.9
7.1
7.5
8.1
8.7
68
70
74
80
86
113.7
8.1
80
86
-
124.5
6.1
121.9
8.7
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
62
Johnson Controls Unitary Products
882108-YIM-B-1012
TABLE 42: 40 TON DRIVE ADJUSTMENT
10 HP MOTOR & 617 RPM DRIVE
15 HP MOTOR & 652 RPM DRIVE
20 HP MOTOR & 728 RPM DRIVE
25 HP MOTOR & 780 RPM DRIVE
%RPM
& CFM
REQ’D
PD
BROWNING
2B5V_ _
% RPM
& CFM
REQ’D
PD
BROWNING
2B5V_ _
%RPM
& CFM
REQ’D
PD
BROWNING
2B5V_ _
%RPM
& CFM
REQ’D
PD
BROWNING
2B5V_ _
91.8
95.9
4.5
4.7
42
44
88.2
92.1
4.5
4.7
44
46
82.5
86.0
4.7
4.9
46
48
83.7
86.9
5.1
5.3
50
52
(Std.)
4.9
100.0
46
96.0
4.9
48
89.5
5.1
50
90.2
5.5
54
(Std.)
5.1
104.1
108.2
112.2
5.1
5.3
5.5
48
50
52
100.0
103.9
107.8
50
52
54
93.0
96.5
5.3
5.5
52
54
56
93.4
96.7
5.7
5.9
56
58
60
5.3
5.5
(Std.)
5.7
(Std.)
6.1
100.0
100.0
116.3
5.7
54
-
111.7
115.6
119.5
123.4
127.4
-
5.7
5.9
6.1
6.3
6.5
-
56
58
60
62
64
66
103.5
107.0
110.5
114.0
117.5
121.1
5.9
6.1
6.3
6.5
6.7
6.9
58
60
62
64
66
68
103.3
106.6
109.8
113.1
116.4
119.7
6.3
6.5
6.7
6.9
7.1
7.5
62
64
66
68
70
74
-
-
-
-
-
-
-
-
-
-
-
-
-
-
TABLE 43: DRIVE ADJUSTMENT FOR POWER EXHAUST - 25 TON
5 HP Motor & 758 RPM Drive
7.5 HP Motor & 852 RPM Drive
10 HP Motor & 976 RPM Drive
%RPM
& CFM
Req’d
PD
Browning
2b5v_ _
%RPM
& CFM
Req’d
PD
Browning
2b5v_ _
%RPM
& CFM
Browning
2b5v_ _
Req’d PD
100
104
109
113
117
122
4.9 (Std.)
5.1
46
48
50
52
54
56
92
96
5.1
5.3
48
50
52
54
56
58
93
97
5.9
6.1
56
58
60
62
64
66
5.3
100
104
108
112
5.5 (Std.)
5.7
100
103
107
110
6.3 (Std.)
6.5
5.5
5.7
5.9
6.7
5.9
6.1
6.9
Johnson Controls Unitary Products
63
882108-YIM-B-1012
TABLE 44: DRIVE ADJUSTMENT FOR POWER EXHAUST - 30 & 40 TON
7.5 HP Motor & 852 RPM Drive
10 HP Motor & 976 RPM Drive
15 HP Motor & 1069 RPM Drive
% RPM
& CFM
REQ’D
PD (in)
Browning
2B5V_ _
% RPM
& CFM
REQ’D
PD (in)
Browning
2B5V_ _
% RPM
& CFM
REQ’D
PD (in)
Browning
2B5V_ _
96.4
100.0
103.6
107.3
110.9
114.5
5.3
(Std.) 5.5
5.7
52
54
56
58
60
62
93.7
96.8
5.9
6.1
58
60
62
64
66
68
94.2
97.1
6.5
6.7
64
66
68
70
74
80
100.0
103.2
106.3
109.5
(Std.) 6.3
6.5
100.0
102.9
108.7
117.4
(Std.) 6.9
7.1
5.9
6.1
6.7
7.5
6.3
6.9
8.1
POST-START CHECKLIST (GAS)
GAS FURNACE OPERATING
INSTRUCTIONS
After the entire control circuit has been energized and the
heating section is operating, make the following checks:
1. Check for gas leaks in the unit piping as well as the sup-
ply piping.
Each furnace module is equipped with an auto-
matic re-ignition system. DO NOT attempt to man-
ually light the burners.
2. Check for correct manifold gas pressures. See Checking
Gas Input.
3. Check the supply gas pressure. It must be within the lim-
its shown on rating nameplate. Supply pressure should
be checked with all gas appliances in the building at full
fire. At no time should the standby gas pressure exceed
13 inches, nor the operating pressure drop below 6
inches. If gas pressure is outside these limits, contact the
local gas utility for corrective action.
TO LIGHT THE MAIN BURNERS
1. Turn off electric power to unit.
2. Turn space temperature sensor to lowest setting.
4. Turn on electric power to unit.
MANIFOLD GAS PRESSURE ADJUSTMENT
5. On Constant Volume units, set space setpoint to warmer
or cooler as desired. (If sensor set point temperature is
above room temperature, the main burners will ignite). If
a second stage of heat is called for, the main burners for
second stage heat will ignite for the second stage heat.
For VAV units set morning warm-up thermostat far above
the return air temperature and cycle the time clock OFF,
then ON.
Small adjustments to the gas flow may be made by turning
the pressure regulator adjusting screw on the automatic gas
Adjust as follows:
1. Remove the cap on the regulator. It's located next to the
push-on electrical terminals.
TO SHUT DOWN
2. To decrease the gas pressure, turn the adjusting screw
counterclockwise.
1. Turn off electric power to unit.
3. To increase the gas pressure, turn the adjusting screw
clockwise.
2. Depress knob of gas valve while turning to off position or
move switch to off position. (Refer to Figure 25).
NOTE: The factory manifold pressure for each furnace
module is 3.50 IWG.
64
Johnson Controls Unitary Products
882108-YIM-B-1012
4. Remove the heat shield on top of the manifold support.
Burners are now accessible for service.
VALVE
SWITCH
Reverse the above procedure to replace the assemblies.
Make sure that burners are level and seat at the rear of the
gas orifice.
ELECTRICAL
TERMINALS
ADJUSTMENT OF TEMPERATURE RISE
VALVE
INLET
The temperature rise (or temperature difference between the
return air and the heated air from the furnace) must lie within
the range shown on the CGA/ETL rating plate and the data in
STANDARD GAS VALVE
After the temperature rise has been determined, the CFM can
be calculated as follows:
ELECTRICAL
TERMINALS
Btuh 0.8
1.08 F Degrees Temp Rise
CFM= -------------------------------------------------------------------------
VALVE
SWITCH
After about 20 minutes of operation, determine the furnace
temperature rise. Take readings of both the return air and the
heated air in the ducts (about six feet from the furnace) where
they will not be affected by radiant heat. Increase the blower
CFM to decrease the temperature rise; decrease the blower
blower motor and drive data. Minimum allowable CFM is
6,000 CFM. Limit will open below this rating.
CHECKING GAS INPUT
NATURAL GAS
VALVE
INLET
2 STAGE GAS VALVE USED
ON MODULATING GAS HEAT
1. Turn off all other gas appliances connected to the gas
meter.
FIGURE 25 - TYPICAL GAS VALVES
2. With the furnace turned on, measure the time needed for
one revolution of the hand on the smallest dial on the
meter. A typical gas meter usually has a 1/2 or a 1 cubic
foot test dial.
BURNER INSTRUCTIONS
To check or change burners, pilot or orifices, CLOSE MAIN
MANUAL SHUT-OFF VALVE AND SHUT OFF ALL POWER
TO THE UNIT.
3. Using the number of seconds for each revolution and the
size of the test dial increment, find the cubic feet of gas
1. Remove the screws holding either end of the manifold to
the burner supports.
If the actual input is not within 5% of the furnace rating (with
allowance being made for the permissible range of the regu-
lator setting), replace the orifice spuds with spuds of the
proper size.
2. Open the union fitting in the gas supply line just
upstream of the unit gas valves and downstream from
the main manual shut-off valve.
NOTE: To find the Btu input, multiply the number of cubic
feet of gas consumed per hour by the Btu content of
the gas in your particular locality (contact your gas
company for this information - it varies widely from
city to city).
3. Disconnect wiring to the gas valves and spark ignitors.
Remove the manifold-burner gas valve assemblies by
pulling back.
Johnson Controls Unitary Products
65
882108-YIM-B-1012
SERVICE
TABLE 45: GAS RATE - CUBIC FEET PER HOUR
Size of Test Dial
Seconds for One
REFRIGERATION SYSTEM
Rev.
1/2 cu. Ft.
900
1 cu. Ft.
1800
900
CHARGE: Each system is fully factory charged with R-410A.
The correct charge appears on the unit nameplate.
2
4
450
Thermal Expansion Valves: The 30 ton unit has 3 and the 40
ton unit has 4 independent refrigeration systems. These
TXVs are set to maintain 15°F superheat leaving the evapo-
rator coil. The superheat on each valve is adjustable, how-
ever, adjustments should only be made if absolutely
necessary.
6
300
600
8
225
450
10
180
360
FILTER DRIER: Each system is equipped with a filter drier.
The drier should be replaced whenever moisture is indicated
in the system.
H
E
A
T
E
X
C
H
A
N
G
E
R
T
U
B
E
G
A
S
COMPRESSORS
S
U
P
P
L
Y
P
I
P
E
B
U
R
N
E
R
F
L
A
M
E
Each compressor is inherently protected from over current
and over temperature. High and low pressure switches are
installed on the discharge and suction lines respectively for
high and low pressure protection. Scroll compressors operate
in only one direction. If the compressor is experiencing low
amperage draw, similar discharge and suction pressure or
increased noise level, it is operating in reverse. Switch two
line voltage connections to correct (See Compressor Rotation
B
U
R
N
E
R
(
B
L
U
E
O
N
L
Y
)
B
U
R
N
E
R
B
R
A
C
K
E
T
I
G
N
I
T
O
R
FIGURE 26 - TYPICAL FLAME APPEARANCE
Example: By actual measurement, it takes 7 seconds for the
hand on the one cubic foot dial to make a revolution with just
a 570,000 Btuh furnace running. Read across to the column
in Table 24, headed 1 Cubic Foot where you will determine
that 525 cubic feet of gas per hour are consumed by the fur-
nace at that rate. Multiply 525 x 1050 (the Btu rating of the
gas obtained from the local gas company). The result of
551,000 Btuh is within 5% of the 570,000 Btuh rating of the
furnace.
MOTORS
INDOOR BLOWER MOTORS
All indoor blower motors are non-inherently protected three
phase motors. Overcurrent protection is provided by a man-
ual reset starter/overload relay and short circuit protection is
provided by fuses. Where there is a supply fan VFD, an auxil-
iary contact provides the overcurrent indication to the Sim-
plicity® control.
ELECTRIC HEATING
The electric furnace is operational as shipped from the fac-
tory and does not receive any field adjustments.
POWER EXHAUST OR RETURN AIR FAN MOTORS
COOLING OPERATING INSTRUCTIONS
COMPRESSOR
All motors are non-inherently protected three phase motors.
Overcurrent protection is provided by a manual reset
starter/overload relay and short circuit protection is provided
by fuses.
Compressors are factory mounted ready for operation (See
CONDENSER FAN MOTORS
All condenser fan motors are inherently protected three
phase motors. Short circuit protection is provided by fuses.
INTERNAL WIRING
Check all electrical connections in the unit control box;
tighten as required.
DRAFT MOTOR (GAS FURNACE)
All draft motors are line voltage, inherently protected, single
phase PSC motors. Short circuit protection is provided by
fuses.
CONDENSER FANS
Check for proper condenser fan rotation; clockwise facing the
air discharge. If condenser fans are rotating backwards, line
voltage to unit single point power connection is misphased
66
Johnson Controls Unitary Products
882108-YIM-B-1012
1
TABLE 49: STATIC RESISTANCE STEAM COIL
(40 TON)
TABLE 46: STEAM COIL (1 ROW, 25 & 30 TON)
Capacity (MBH) at Steam Pressure (PSI)
CFM
CFM
8000
11000
14000
17000
20000
2
6
10
15
Air Pressure
Drop
6000
8000
10000
12000
15000
1.
194.1
221.1
243.2
261.9
285.6
207.9
236.9
260.5
280.6
306.0
219.8
250.4
275.4
296.6
323.5
232.6
265.0
291.4
313.9
342.4
0.18
0.31
0.48
0.67
0.88
1
TABLE 50: HOT WATER COIL (1 ROW 25 & 30 TON)
Capacity (MBH) at Entering Water
Temperature
GPM
CFM
Based on 60°F entering air temperature, 2.00” maxi-
mum air pressure drop across the coil.
140 °F
160 °F
180 °F
200 °F
1
TABLE 47: STEAM COIL (1 ROW, 40 TON)
6000
8000
91.4
102
115.3
128.8
139.5
148.4
159.2
129.4
147
139.3
155.8
168.8
179.6
192.9
156
163.6
182.9
198.4
211.2
226.9
182.7
207.7
228.2
245.6
267.8
190.1
217.5
240.2
259.7
284.8
194.1
222.8
246.8
267.5
294.1
Capacity (MBH) at Steam Pressure (PSI)
CFM
2
6
10
15
10
10000
12000
15000
6000
110.4
117.3
125.9
103
8000
11000
14000
17000
20000
1.
221.1
252.9
278.2
299.4
317.6
236.9
271.0
298.0
320.7
340.2
250.4
286.4
315.0
339.0
359.6
265.0
303.1
333.4
358.8
380.6
8000
116.8
128.2
137.8
150
177.2
194.7
209.5
228.2
162.5
185.8
205.1
221.8
243
20
10000
12000
15000
6000
161.3
173.6
189
Based on 60°F entering air temperature, 2.00” maxi-
mum air pressure drop across the coil.
TABLE 48: STATIC RESISTANCE STEAM COIL (25 &
30 TON)
107.6
122.8
135.5
146.4
160.3
110.1
126.1
139.6
151.2
166.1
135
8000
154.3
170.3
184
CFM
6000
8000
10000
12000
15000
30
10000
12000
15000
6000
Air Pressure
Drop
0.11
0.18
0.26
0.36
0.54
201.6
138
166
8000
158.2
175.2
189.8
208.6
190.5
210.9
228.5
251.3
40
10000
12000
15000
1.
Based on 60°F entering air temperature, 2.00” maximum
pressure drop across the hot water coil.
Johnson Controls Unitary Products
67
882108-YIM-B-1012
1
TABLE 53: WATER PRESSURE DROP (1 ROW, 40
TONS)
TABLE 51: HOT WATER COIL (1 ROW, 40 TON)
Capacity (MBH) at Entering Water
Temperature
GPM
10
20
30
40
GPM
CFM
Water
Pressure
Drop
140 °F
160 °F
180 °F
200 °F
0.9
3.0
6.0
10.0
8000
11000
14000
17000
20000
8000
102
128.8
144.1
155.9
165.4
173.3
147
155.8
174.4
188.8
200.4
210.1
177.2
202.3
222.4
239
182.9
205.1
222.1
235.8
247.3
207.7
237.2
260.8
280.5
297.3
217.5
250.3
276.9
299.3
318.6
222.8
257.5
285.8
309.7
330.6
114
10
123.2
130.6
136.8
116.8
133.2
146.2
157
TABLE 54: HOT WATER COIL (2 ROW, 25 & 30
1
TON)
Capacity (MBH) at Entering Water
Temperature
GPM
CFM
11000
14000
17000
20000
8000
167.7
184.2
197.9
209.6
154.3
177.4
196.1
211.8
225.3
158.2
182.7
202.6
219.5
234.2
140 °F
160 °F
180 °F
200 °F
6000
8000
177.5
203.8
224.8
242.2
263.6
198.1
232.2
260.7
285.0
316.0
206.1
243.6
275.3
302.9
338.4
210.5
249.8
283.3
312.7
351.0
223.8
257.2
284.1
306.4
333.8
248.9
292.0
328.1
359.0
398.4
258.7
305.9
345.9
380.7
425.7
263.9
313.3
355.6
392.7
440.9
270.4
311.1
343.9
371.1
404.6
300.0
352.2
395.9
433.4
481.3
311.4
368.4
416.8
458.9
513.4
317.4
377.1
428.2
473.0
531.3
317.3
365.5
404.2
436.4
476.1
351.3
412.7
464.1
508.3
564.8
364.2
431.1
488.0
537.6
601.7
371.1
441.1
501.0
553.6
622.1
20
20
10000
12000
15000
6000
166.2
122.8
141.2
155.9
168.3
179.1
126.1
145.6
161.4
174.7
186.3
253.2
185.8
213.8
236.4
255.4
271.8
190.5
220
11000
14000
17000
20000
8000
8000
30
40
60
10000
12000
15000
6000
8000
11000
14000
17000
20000
10000
12000
15000
6000
40
244.1
264.5
282.3
8000
1.
Based on 60°F entering air temperature, 2.00” maximum
pressure drop across the hot water coil.
80
10000
12000
15000
TABLE 52: WATER PRESSURE DROP (1 ROW, 25 &
30 TON)
1.
Based on 60°F entering air temperature, 2.00” maximum
pressure drop across the hot water coil.
GPM
10
20
30
40
Water
Pressure
Drop
0.9
3.0
6.0
10.0
68
Johnson Controls Unitary Products
882108-YIM-B-1012
TABLE 55: WATER PRESSURE DROP (2 ROW, 25 &
30 TON)
TABLE 57: STATIC RESISTANCE HOT WATER COIL
(25 & 30 TON)
CFM
6000
8000
10000
15000
GPM
20
40
60
80
Air Pressure
Drop 1 Row
0.07
0.11
0.16
0.32
Water
Pressure
Drop
0.9
3.0
6.0
10.0
Air Pressure
Drop 2 Row
0.14
0.23
0.33
0.65
TABLE 56: WATER PRESSURE DROP (2 ROW, 40
TON)
TABLE 58: STATIC RESISTANCE HOT WATER COIL
(40 TON)
CFM
8000
11000
14000
20000
GPM
20
40
60
80
Air Pressure
Drop 1 Row
0.11
0.19
0.29
0.52
Water
Pressure
Drop
0.9
3.0
6.0
10.0
Air Pressure
Drop 2 Row
0.23
0.39
0.58
1.06
NOTE: Water pressure drop numbers are based on 60°F
entering air temperature, 2.00” maximum air pres-
sure drop across the hot water coil(s). AHRI certi-
fied ratings at covering other conditions are
available upon request. Hot water coils are
approved for use with glycol (rates available upon
request.
Johnson Controls Unitary Products
69
882108-YIM-B-1012
MOTORS
GAS FURNACE SAFETY FEATURES
COMBUSTION AIR PROVING
Outdoor fan motors are permanently lubricated and require
no maintenance. Lubrication, if desired, is to be performed by
a qualified service agency.
Combustion air proving is provided by a pressure switch. As
the motor approaches full speed, this switch closes before
any other circuit or gas component can be energized.
Ventor motors are factory lubricated for an estimated 10-year
life.
ROLLOUT
Indoor Fan Motors - The indoor blower motor features ball-
bearings that do not require periodic lubrication. Periodic
lubrication of the motor bearings can extend the life but is
Rollout protection is provided by a switch mounted on the
heat shield of each furnace module. The switch senses any
flame or excessive heat in the burner compartment. When
the switch opens, the furnace module is immediately locked
out until there is a break in power to the specific furnace mod-
ule and the manual itch is reset. Note that only the module
with the open rollout switch will be locked out, the remaining
modules will continue to operate although all should be
inspected.
optional.
Damage can occur if the bearings are over lubri-
cated. Use grease sparingly.
A trip of the rollout switch likely indicates a flue restriction, an
opening in the flue passageway, defective pressure switch or
a loose combustion blower wheel. Corrective action should
be taken accordingly.
To go to bypass mode, the bypass VFD as installed in this
unit must be switched by hand on the front of the bypass
enclosure in the fan cabinet of the rooftop unit. It does not
automatically go to bypass mode if the drive fails.
MAINTENANCE
The switches on the front of the bypass box control its run
mode. For normal running:
NORMAL MAINTENANCE
•
•
•
The ON/OFF rotary power switch must be in the ON
position.
The BYPASS/OFF/DRIVE switch S1 should be in the
DRIVE position.
The HAND/STOP/AUTO switch S2 should be in the
AUTO position, so that the unit control will properly run
the fan and control the speed.
The TEST/NORMAL switch S3 should be in the NOR-
MAL position.
Prior to any of the following maintenance proce-
dures, shut off all power to the unit. Failure to do
so could cause personal injury.
•
Label all wires prior to disconnection when servic-
ing controls. Wiring errors can cause improper and
dangerous operation. Verify proper operation after
servicing.
If the unit is operated with the manual bypass
switch in the LINE (BYPASS) position and there
are VAV boxes present, the boxes must be driven
to the full-open position using a customer-supplied
power source to prevent over-pressuring the
ductwork.
Periodic maintenance normally consists of changing or clean-
ing filters and (under some conditions) cleaning the main
burners.
FILTERS
Inspect once a month. Replace disposable or clean perma-
nent type as necessary. The dimensional size of the replace-
ment filter must be the same as the replaced filter (Refer to
Perform all maintenance operations on the blower
motor with power disconnected from the unit. Do
not attempt to lubricate bearings with the unit in
operation.
Johnson Controls Unitary Products
83
882108-YIM-B-1012
NOTE: Exercise care when cleaning the coil so that the coil
TABLE 59: INDOOR BLOWER BEARING
LUBRICATION SCHEDULE
fins are not damaged.
Do not permit the hot condenser air discharge to be
obstructed by overhanging structures or shrubs.
Operating Speed (RPM)
1000 1500
Relubrication Cycle (Months)
Shaft Size (Inches)
500
2000
GAS BURNER
1-1/16 - 1-7/16
1-1/2 - 1-3/4
1-7/8 - 2-3/16
2 -1/4 - 3
6
6
6
6
6
6
6
4
6
6
4
4
6
4
4
2
Periodically (at least annually at the beginning of each heat-
ing season) make a visual check of the main burner flame.
TO CLEAN BURNERS
Remove them from the furnace as explained in BURNER
INSTRUCTIONS. Clean burners with hot water applied along
top of the burner.
On an annual basis, check the motor for accumulations of
dust, etc. That may block the cooling slots in the motor shell.
Check for loose, damaged or misaligned drive components.
Check that all mounting bolts are tight. Replace defective
parts as required.
COMBUSTION AIR DISCHARGE
Visually inspect discharge outlet periodically to make sure
that the buildup of soot and dirt is not excessive. If necessary,
clean to maintain adequate combustion air discharge.
If desired, every three years remove both pipe plugs at each
end shell and clean out any hardened grease or foreign mat-
ter. Replace one plug on each end with a clean grease fitting.
Using a low pressure grease gun, pump grease (Chevron
SRI-2 or equivalent) into the bearing cavity until new grease
shows at the open port. Do not over-lubricate. Run the motor
for ten minutes until excess grease is purged from the cavity.
Replace the plugs.
CLEANING FLUE PASSAGES AND HEATING ELEMENTS
With proper combustion adjustment, the heating element of a
gas fired furnace will seldom need cleaning. If the element
should become sooted, it can be cleaned as follows:
1. Remove the burner assembly as outlined in BURNER
INSTRUCTIONS.
FAN DRIVES
2. Remove the screws holding the top of the flue collector
box. Carefully remove the top of the flue collector box.
The draft wheel, housing, and draft motor can remain
assembled to the flue box top, if cleaning of these com-
ponents is not required.
Units are supplied with fan shaft bearings that do not require
Lubricate with a premium quality NLGI 2 grade multi-purpose
roller bearing grease having corrosion inhibitors, anti-oxidant
additives and mechanical stability for high speed operation.
The grease should also have a minimum base oil viscosity of
500 SUS at 100°F. Do not use a heavy, long fibered grease.
3. This will provide access to flue baffles, then remove the
flue baffles from the tube interiors. To remove, the flue
baffles, remove the stainless steel screws from the vest
The presents of dirt, moisture or chemical fumes around the
bearings requires more frequent lubrication.
4. Using a wire brush on a flexible wand, brush out the
inside of each heat exchanger from the burner inlet and
flue outlet ends.
Fill bearings with lubricant prior to extended shutdown or stor-
age. Rotate the shaft monthly during idle periods.
5. Brush out the inside of the flue collector box, and the flue
baffles.
Avoid excessive grease purging from seals during lubrication,
this reduces the life of the bearing.
6. Run the wire brush down the vent hoods from the flue
collector end.
OUTDOOR COIL
7. If soot build-up is particularly bad, remove the vent motor
and clean the wheels and housings. Run the wire brush
down the flue extension at the outlet of the vent hous-
ings.
Dirt should not be allowed to accumulate on the outdoor coil
surface or other parts in the air circuit. Cleaning should be as
often as necessary to keep coil clean. Use a brush, vacuum
cleaner attachment, or other suitable means. If water is used
to clean coil, be sure power to the unit is shut off prior to
cleaning.
8. After brushing is complete, blow all brushed areas with
air or nitrogen. Vacuum as needed.
9. Replace parts in the order they were moved in steps 1 to
4.
84
Johnson Controls Unitary Products
882108-YIM-B-1012
10. Assure that all seams on the vent side of the combustion
systems are air tight. Apply a high temperature (+500°F)
sealing compound where needed (Dow Corning, Silastic
736, Loctite Superflex 596 or equivalent).
The restrictor plate must also be sealed to furnace tube
sheet.
SECURE OWNERS APPROVAL
NOTE: One end of each flue baffle is provided
with a sharper bend than the other end - this
sharper bend must be positioned at the tube and
attached with a stainless steel screw.
When the system is functioning properly, secure the owner’s
approval. Show him the location of all disconnect switches
and the room temperature sensors. Teach him how to start
and stop the unit and how to adjust the temperature settings
within the limitations of the system.
OUTLET TUBES
"A"
"A"
FLUE BAFFLE
REMOVE
SCREWS
SECTION "A" - "A"
FIGURE 48 - TYPICAL FLUE BAFFLE
Johnson Controls Unitary Products
85
R-410A QUICK REFERENCE GUIDE
Refer to Installation Instructions for specific installation requirements.
R-410A Refrigerant operates at 50 - 70 percent higher pressures than R-22. Be sure that servicing
equipment and replacement components are designed to operate with R-410A.
R-410A Refrigerant cylinders are rose colored.
Recovery cylinder service pressure rating must be 400 psig, DOT 4BA400, or DOT BW400.
Recovery equipment must be rated for R-410A.
Do Not use R-410A service equipment on R-22 systems. All hoses, gages, recovery cylinders, charging
cylinders and recovery equipment must be dedicated for use on R-410A systems only.
Manifold sets must be at least 700 psig high side, and 180 psig low side, with 550 psig retard.
All hoses must have a service pressure rating of 800 psig.
Leak detectors must be designed to detect HFC refrigerants.
Systems must be charged with liquid refrigerant. Use a commercial type metering device in the
manifold hose.
R-410A can only be used with POE type oils.
POE type oils rapidly absorb moisture from the atmosphere.
Vacuum pumps will not remove moisture from POE type oils.
Do not use liquid line driers with a rated working pressure rating less than 600 psig.
Do not install suction line driers in the liquid line.
A liquid line drier is required on every unit.
Do not use a R-22 TXV. If a TXV is to be used, it must be a R-410A TXV.
Never open system to atmosphere when under a vacuum.
If system must be opened for service, evacuate system then break the vacuum with dry nitrogen and
replace all filter driers.
FIGURE 55 - R-410A QUICK REFERENCE GUIDE
Subject to change without notice. Printed in U.S.A.
Copyright © 2012 by Johnson Controls, Inc. All rights reserved.
882108-YIM-B-1012
Supersedes: 882108-YIM-A-0712
Johnson Controls Unitary Products
5005 York Drive
Norman, OK 73069
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