Carrier 50HG014-028 User manual

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