50PG03---07
Single Package Rooftop Units
Electric Cooling with PURONR (R ---410A)
Refrigerant and COMFORTLinkt Controls
Installation Instructions
IMPORTANT: This installation instruction contains basic unit
installation information including installation of field control
devices. For information on unit start--up, service, and operation,
refer to the unit Controls, Start-- Up, Operation, Service, and
Troubleshooting Instructions also enclosed in the unit literature
packet.
TABLE OF CONTENTS
SAFETY CONSIDERATIONS1.........................
INSTALLATION4....................................
Step 1 -- Provide unit Support4.........................
Step 2 -- Rig and Place Unit4...........................
Step 3 -- Field Fabricate Ductwork7......................
Step 4 -- Make Unit Duct Connections7...................
Step 5 -- Install External Trap for Condensate Drain7........
Step 6 -- Make Electrical Connections8...................
Step 7 -- Install Outdoor Air Hoods (Units With
Economizer22...............................
Step 8 -- Install All Accessories22.......................
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 cleaning coils and filters and replacing filters. All other
operations should be performed by trained service personnel.
When working on air-conditioning equipment, observe precautions
in the 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.
Recognize safety information. This is the safety--alert symbol
When you see this symbol on the unit and in instructions or
manuals, be alert to the potential for personal injury.
Understand the signal words DANGER, WARNING, and
CAUTION. These words are used with the safety--alert symbol.
DANGER identifies the most serious hazards which will result in
severe personal injury or death. WARNING signifies a hazard
which could result in personal injury or death. CAUTION is used
to identify unsafe practices which may result in minor personal
injury or product and property damage. NOTE is used to highlight
suggestions which will result in enhanced installation, reliability, or
operation.
!
WARNING
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could cause personal
injury or death.
Before performing service or maintenance operations
on unit, turn off main power switch to unit and install
lockout tag.
!
WARNING
UNIT OPERATION AND SAFETY HAZARD
Failure to follow this warning could cause personal
injury, death and/or equipment damage.
Puron (R--410a) refrigerant systems operate at higher
pressures than standard R--22 systems. Do not use R--22
service equipment or components on Puron refrigerant
equipment.
!
WARNING
FIRE, EXPLOSION HAZARD
Failure to follow this warning could result in personal
injury, death and/or property damage.
1. Improper installation, adjustment, alteration, service,
or maintenance can cause property damage, personal
injury, or loss of life. Refer to the User’s Information
Manual provided with this unit for more details.
2. Do not store or use gasoline or other flammable
.
vapors and liquids in the vicinity of this or any other
appliance.
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.
Page 2
C07269
50PG03--07
Fig. 1 -- Roof Curb Details
2
Page 3
C07271
50PG03--07
Fig. 2 -- Base Unit Dimensions
3
Page 4
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.
Ductwork must be attached to curb and not to the unit. 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. Carrier roof curb accessories are for flat roofs or slab
mounting.
IMPORTANT: The gasketing of theunit 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. Do not slide unit to position on roof curb.
Alternate Unit Support
50PG03--07
When a curb cannot be used, install unit on a noncombustible
surface. Support unit with sleepers, using unit curb support area. If
sleepers cannot beused, support long sides of unit with a minimum
of 3 equally spaced 4--in. x 4--in. pads on each side.
Step 2 — Rig and Place Unit
Inspect unit for transportation damage. See Table 1 for physical
data. File any claim with transportation agency.
!
CAUTION
PERSONAL INJURY AND PROPERTY DAMAGE HAZARD
Failure to follow this caution may result in damage to roof.
All panels must be in place when rigging. Unit is not
designed for handling by fork truck.
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 rail 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.
Rigging holes are provided in the unit base rails as shown in Fig. 3.
Refer to rigging instructions on unit.
Positioning
Maintain clearance, per Fig. 2, around and above unit to provide
minimum distance from combustible materials, proper airflow, and
service access. See Fig. 4 for location of access panels.
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.
After unit is in position, remove crating and polyethylene sheet.
Roof Mount
Check building codes for weight distribution requirements. Unit
operating weight is shown in Table 1.
Installation Onto Curb
The 50PG units are designed to fit on the accessory full perimeter
curb. In either case, correct placement of the unit onto the curb is
critical to operating performance. To aid in correct positioning,
place unit on roof curb to maintain 1/4--in. gap between the inside
of rail and roof curb on long sides and a 1/2--in. gap between the
inside of rail and roof curb on both duct and condenser ends. Refer
to Fig. 1 and 3, to assure proper duct opening alignment.
NOTE: Before positioning unit onto curb, refer to Step 5 -- Install
External Trap for Condensate Drain section concerning bottom
drain connection plug.
!
CAUTION
UNIT DAMAGE HAZARD
Failure to follow this caution may result in equipment
damage.
Do not slide unit to position when it is sitting on the curb.
Curb gasketing material may be damaged and leaks may
result.
Slab Mount (Horizontal Units Only)
Provide a level concrete slab that extends a minimum of 6--in.
beyond unit cabinet. Install a gravel apron in front of
condenser--coil air inlet to prevent grass and foliage from
obstructing airflow.
NOTE: Horizontal units may be installed on a roof curb if
required.
CAU OTI
ACCESS PANEL MUST BE IN PLACE WHEN RIGGING.
Hook rigging shackles through holes in base rail, as shown in
Detail A. Holes in base rails are centered around the unit
center of gravity. Use wooden top skid, when rigging, to
prevent rigging straps from damaging unit.
4…16 x 20 x 24…16 x 20 x 24…16 x 20 x 24…16 x 20 x 24…16 x 20 x 2
1...12 x 91...12 x 91...12 x 91...12 x 9
Centrifugal Type, Belt Drive
1...12 x 91...12 x 91...12 x 91...12 x 9
BeltBeltBeltBelt
BeltBeltBeltBelt
0.850.850.85/2.40†2.40
0.851.60/2.40†1.60/2.40†3.10
48Y48Y56Y56Y
48Y56Y56Y56Y
482-736596-910690-978796-1128
796-1128828-1173929-12611150-1438
1.9-2.91.9-2.92.4-3.42.4-3.4
2.4-3.42.4-3.42.8-3.84.0-5.0
6.85.56.05.2
5.25.05.26.0
1
/
2
1
/
2
1
/
2
5
/
8
5
/
8
5
/
8
5
/
8
7
/
8
49.349.349.352.3
AXAXAXAX
AXAXAXAX
16.216.216.216.2
16.216.216.216.2
20.220.220.220.2
20.220.220.220.2
48595866
62696658
5555
5555
482596690796
7968289291150
3
/
4
3
/
4
3
/
4
3
/
4
Throwaway
6
Page 7
Step 3 — Field Fabricate Ductwork
On vertical units, secure all ducts to roof curb and building
structure. Do not connect ductwork to unit. For horizontal
applications, field--supplied flanges should be attached to
horizontal discharge openings and all ductwork secured to the
flanges. 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.
If a plenum return is used on a vertical unit, the return should be
ducted through the roof deck to comply with applicable fire codes.
A minimum clearance is not required around ductwork. Cabinet
return--air static pressure (a negative condition) shall not exceed
0.35--in. wg with economizer or 0.45--in. wg without economizer.
Step 4 — Make Unit Duct Connections
Vertical Supply/Return Configuration
Unit is shipped in vertical supply/return configuration. Ductwork
openings are shown in Fig. 1 and 3. Attach the ductwork to the
roof curb. Do not attach duct directly to the unit.
!
WARNING
PERSONAL INJURY HAZARD
Failure to follow this warning could result in personal
injury.
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.
Horizontal Supply/Return Applications
Unit can be field--converted from vertical supply/return to
horizontal supply/return. Remove all screws securing horizontal
CONTROL BOX
AND
COMPRESSOR
ELECTRICAL
OPTIONS PANEL
duct covers to duct panel. Save panels. Install duct covers in the
vertical duct openings in the basepan with the insulation side up.
Covers will drop into openings and can be secured using
field--supplied self--tapping screws. Ductwork can be attached to
duct flanges provided on unit. When securing ductwork to unit, do
not drill in area below bead or above top edge of duct opening.
Step 5 — Install External Trap for Condensate
Drain
The unit’s 3/4--in. condensate drain connections are located on the
bottom and side of the unit. If the down drain is used, drill a
minimum of a 5/8-in. diameter hole but not larger than a
diameter hole through the drain pan. A dimple of 2 mm in
diameter and 1.5 mm deep will be provided in the drain pan to help
locate the drill bit and to start the hole. Do not cut through the
PVC pipe threads. Unit discharge connections do not determine
the use of drain connections; either drain connection can be used
with vertical or horizontal applications. See Fig. 2 for locations.
When using the standard side drain connection, make sure the plug
(red) in the alternate bottom connection is tight before installing the
unit. (See Fig. 5.)
To use the bottom drain connection for a roof curb installation,
relocate the factory--installed plug (red) from the bottom
connection to the side connection. A 1/2--in. socket extension can
be used to remove the plug. (See Fig. 5.) The piping for the
condensate drain and external trap can be completed after the unit
is in place.
All units must have an external trap for condensate drainage. Install
a trap at least 4--in. deep and protect against freezeup. If drain line
is installed downstream from the external trap, pitch the line away
from the unit at 1--in. per 10 ft of run. Do not use a pipe size
smaller than the unit connection (3/4--in.). (See Fig. 6 and 7.)
The 50PG units are provided with a removable condensate pan for
ease of cleaning. It is recommended that a union be placed between
the unit and condensate drainage to ease the removal of the pan
during servicing. Adequate clearance should be allowed if removal
of condensate pan is required. Allow 54--in. between condensate
pan access panel and any obstruction for complete removal.
INDOOR MOTOR
ACCESS DOOR
3
/4-in.
50PG03--07
OUTDOOR AIR
SCREEN
(HIDDEN)
ECONOMIZER
HOOD
BAROMETRIC
RELIEF DAMPER
HOOD
BASEPAN CONNECTIONS
ACCESS PANEL
Fig. 4 -- Panel and Filter Locations
FILTER ACCESS DOOR
7
ELECTRIC HEAT
ACCESS DOOR
CONDENSER COIL
ACCESS PANEL
C07272
Page 8
INSERT SIDE DRAIN
A
PLUG FOR DOWN
DRAIN USE.
DRILL 5/8” DIA. (0.625 mm) HOLE
THRU FOR DOWN DRAIN USE.
C10321
Fig. 5 -- Condensate Drain Pan
OPTIONAL UNIONS
TO ALLOW FOR CONDENSATE
PAN REMOVAL
50PG03--07
4" (102mm)
CONDENSATE
PAN ACCESS
PANEL
Fig. 6 -- External Trap for Condensate Drain
NOTE: Trap should be deep enough to offset maximum unit static difference.
4-in. trap is recommended.
C06291
Fig. 7 -- Condensate Drain Piping Details
C06234
Step 6 — Make Electrical Connections
(For more details, refer to the Controls, Start--up, Operation, and
Troubleshooting manual).
Field Power Supply
All 208/230--v units are factory wired for 230--v power supply. If
the 208/230--v unit is to be connected to a 208--v power supply, the
transformers (TRAN1 and TRAN2) must be rewired by moving
the black wire with the 1/4--in. female quick connect from the
230--volt connection and moving to the 200--volt 1/4--in. male
terminal on the primary side of the transformer.
Refer to unit label diagram for additional information. Leads are
provided for field wire connections. Use UL (Underwriters
Laboratories) approved copper/aluminum connector.
When installing rooftop units, provide safety disconnect per NEC
(National Electrical Code) Article 440 or local codes. For
non--fused disconnects, size the disconnect according to the sizing
data provided in the electrical data tables. If a fused disconnect is
used, determine the minimum size for the switch based on the
disconnect sizing data provided in the electrical data tables and
then coordinate the disconnect housing size to accommodate the
Maximum Overcurrent Protection (MOCP) device size as marked
on the unit informative plate. (See Table 2 and 3.) 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. 8
for power wiring connection to the unit leads and equipment
ground.
Route power and ground lines through control box end panel or
unit basepan (see Fig. 2) to connections as shown on unit wiring
diagram and Fig. 8. Factory leads may be wired directly to the
disconnect.
8
Page 9
!
CAUTION
UNIT DAMAGE HAZARD
Failure to follow this caution may result in equipment
damage.
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. Damage to compressor could result.
Set heat anticipator settings as follows:
VOLTAGE
All0.20.4
Stage 1
(W1) ON
STAGE 1 AND 2
(W1 AND W2) ON
Settings may be changed slightly to provide a greater degree of
comfort for a particular installation.
C.A1
FIELD
POWER
WIRING
FACTOR
POWER
WIRING
21
11
12
22
23
13
!
WARNING
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal
injury or death.
Unit cabinet must have an uninterrupted, unbroken
electrical ground to minimize the possibility of personal
injury if an electrical fault should occur. This ground may
consist of electrical wire connected to unit ground lug in
control compartment, or conduit approved for electrical
ground when installed in accordance with NEC; ANSI
(American National Standards Institute)/NFPA (National
Fire Protection Association), latest edition, and local
electrical codes.
Field wiring must conform to temperature limitations for type “T”
wire. All field wiring must comply with NEC and local
requirements.
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 (Units Without Optional
Humidi--MiZer
Unit can be controlled with either a Carrier--approved accessory
thermostat or a Carrier--approved 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. 9 or 10.
NOTE: For wire runs up to 50 ft, use no. 18 AWG (American
Wire Gauge) insulated wire (35_C minimum). For 50 to 75 ft, use
no. 16 AWG insulated wire (35_C minimum). For over 75 ft, use
no. 14 AWG insulated wire (35_C Minimum). All wire larger than
no. 18 AWG cannot be directly connected at the thermostat and
will require a junction box and splice at the thermostat.
t Adaptive Dehumidification System)
PER NEC
DISCONNECT
EQUIP GND
LEGEND
C.A1 -- Compressor Contactor (A1)
EQUIP -- Equipment
GND -- Ground
NEC -- National Electrical Code
NOTE: The maximum wire size for C.A1 is 2/0.
C06237
Fig. 8 -- Field Power Wiring Connections
THERMOSTAT ASSEMB Y
REMOVABLE JUMPER
TB1
RH
Y1Y2
RC
R
Y1Y2
W1W2GCLX
W1W2GCX
ROOFTOP UNIT
C06292
Fig. 9 -- Field Control Thermostat Wiring
SEN
WHITE
T-56 SPT
SET
JUMPER
C06239
T55
TB1
T-55 SPT
SEN
RED
BLACK
RED
12 3
BLACK
ROOFTOP UNIT
Fig. 10 -- Field Control Space Temperature Sensor Wiring
Field Control Wiring (Units With Optional Humidi--
t Adaptive Dehumidification System)
MiZer
Units require temperature control inputs for cooling and heating
operation and humidity control inputs for Humidi--MiZer
operation.
50PG03--07
9
Page 10
Temperature Control
The unit can be controlled with either a Carrier--approved space
temperature sensor, a Carrier accessory Thermidistatt device, or a
Carrier--approved accessory thermostat. Install the temperature
control device according to the installation instructions included
with the accessory. Locate the device on a solid interior wall in the
conditioned space to sense average temperature. Carrier space
temperature sensor wiring connections are shown in Fig. 10.
General thermostat field control wiring connections are shown in
Fig. 9. Carrier Thermidistat device wiring connections are shown
in Fig. 11. Configuration of the unit control is required to specify
the control input type before unit operation.
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. 9--11.
NOTE: For wire runs up to 50 ft, use no. 18 AWG (American
Wire Gauge) insulated wire (35_C minimum). For 50 to 75 ft, use
no. 16 AWG insulated wire (35_C minimum). For over 75 ft, use
no. 14 AWG insulated wire (35_C Minimum). All wire larger than
no. 18 AWG cannot be directly connected at the thermostat and
will require a junction box and splice at the thermostat.
50PG03--07
Set heat anticipator settings as follows:
VOLTAGE
All0.20.4
Stage 1
(W1) ON
STAGE 1 AND 2
(W1 AND W2) ON
Settingsmay be changed slightly to provide a greater degree of
comfort for a particular installation.
Humidity Control
Unit can be controlled with either a Carrier accessory Thermidistat
device or a Carrier--approved accessory humidistat (switch output).
The input for an accessory humidity sensor with 4 to 20 mA output
is another option available when an economizer board is installed.
Install the humidity control device according to the installation
instructions included with the accessory. Locate the device on a
solid interior wall in the conditioned space to sense average
humidity. Carrier Thermidistat device wiring connections are
shown in Fig. 11. General humidistat wiring connections are
shown in Fig. 12. Configuration of the unit control is required to
specify the control input type before unit operation. Refer to the
Controls, Start--up, Operation and Troubleshooting manual for
configuration.
Units with the Humidi--MiZert option receive a discrete input
from a field--installed device (such as from the Carrier humidistat
or Thermidistat device). The discrete input is connected to the TB1
terminal strip points labeled Humidistat 1 and 2. As this is a
discrete input, one of the connection points is for power to the
switch and the other is the return path. (See Fig. 12.)
A space relative humidity sensor input (SP.RH) is only available if
an economizer board (ECB) is installed in the unit and then the
sensor can be connected to the OAQ point TB1--4. (See Fig. 12.)
This input is used instead of the discrete humidistat or thermidistat
inputs. The input controls the Humidi--MiZer using the 4 to 20 mA
as percent humidity. The relative humidity value (measured by the
relative humidity sensor) can be displayed on the Scrolling
Marquee, in the space through a System Pilott device, or can be
read by other CCN devices where it can be used to perform more
advanced functions. The humidity sensor must be configured
correctly; refer to the Controls, Start--up, Operation, and
Troubleshooting manual for details.
If the customer also wishes to install a smoke detector into a
Humidi--MiZer equipped 50PG unit, the fire shutdown connection
points are on Plug PL--19, located in the economizer section. See
the unit wiring schematic for wiring. For third--party smoke
detector, see Fig. 13.
Point 19--3 is the 24 vac power source for the detector and point
19--5 is the 24 vac signal input for fire shutdown.
More information is available in the third party control section of
the Controls, Start--up, Operation, and Troubleshooting manual.
Fig. 13 -- Third Party Smoke Detector on Humidi--MiZert
50PG03--07
C07191
11
Page 12
Table 2 – Electrical Data -- Units Without Optional Convenience Outlet
UNIT
50PG
03
NOMINAL
POWER SUPPLY
Volt s-Ph- Hz
208/230-1-6018725312.8601.0
VOLTAGE
RANGE
COMPRESSOR
Min MaxRLALRAFLA
50PG03--07
208/230-1-6018725315.4831.0
04
208/230-3-6018725311.5771.0—
FLA --- Fu l l Lo a d A mps
HACR --- Heating, Air Conditioning and Refrigeration
IFM --- Indoor (Evaporator) Fan Motor
LRA --- L oc k ed Rot o r A mp s
MCA --- Minimum Circuit Amps
MOCP --- M aximum Overcurrent Protection
NEC --- Natio nal Electrical Code
OFM --- Outdoor (Condenser) Fan Motor
RLA --- RatedLoadAmps
*Heater capacity (kW) is based o n heater voltage of 208v, 240v, 480v, or 600v. If power
distribution voltage to unit varies from rated heater voltage, heater kW will vary accordingly.
{ Fuse or HACR ci rcuit breaker.
NOTES:
1. In comp liance with NE C require ments for multim otor and combin a tion load equip ment (refe r
2. Unbalanced 3- Phase Supply Voltage
% Voltage Imbalance= 100 x
LEGEND
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.
Never operate a motor where a phase imb alance in supply voltage is greater than 2%.Use
the following formula to deter mine the percentage of voltage imb alance.
max voltage deviation from average voltage
averag e voltage
OFM
FLA
POWER
EXHAUST
FLA
—
1.4
—-
1.4
IFM
TYPE
Low
High
Low
High
Low
High
Low
High
Low
High
E xa mp le : S up p ly v ol ta ge i s 2 3 0 --- 3 ---6 0
Determine maxim um deviation from average voltage.
(AB) 227 – 224 = 3 v
(BC) 231 – 227 = 4 v
(AC) 227 – 226 = 1 v
Maximum deviation is 4 v.
Deter mine per cent of voltage imbalance .
% Voltage Imbalance= 100 x
This amou nt of phase im balance is satisfactor y as it is be low the maxim um allowable 2%.
IMPORTANT: If the supply voltage phase imb alance is more than 2 %, contact your local el ectric
utility company immed iately.
ELECTRIC HEATPOWER SUPPLY
IFM
FLA
10.8/12.52.3/ 3.021.9/21.925/2522/2274/74
17.3/20.03.8/ 5.027.8/31.130/3526/2974/74
26.0/30.05.6/ 7.538.6/43.640/4536/4074/74
34.7/40.07.5/10.049.5/56.150/6046/5274/74
10.8/12.52.3/ 3.021.9/21.925/2522/2274/74
17.3/20.03.8/ 5.027.8/31.130/3526/2974/74
26.0/30.05.6/ 7.538.6/43.640/4536/4074/74
34.7/40.07.5/10.049.5/56.150/6046/5274/74
4.9
10.8/12.52.3/ 3.023.3/23.525/2523/2376/76
17.3/20.03.8/ 5.029.5/32.930/3527/3076/76
26.0/30.05.6/ 7.540.4/45.445/5037/4276/76
34.7/40.07.5/10.051.3/57.960/6047/5376/76
10.8/12.52.3/ 3.023.3/23.525/2523/2376/76
17.3/20.03.8/ 5.029.5/32.930/3527/3076/76
26.0/30.05.6/ 7.540.4/45.445/5037/4276/76
34.7/40.07.5/10.051.3/57.960/6047/5376/76
10.8/12.52.3/ 3.0 25.2/25.230/3024/2497/97
17.3/20.03.8/ 5.0 27.8/31.130/3526/2997/97
26.0/30.05.6/ 7.5 38.6/43.640/4536/4097/97
34.7/40.07.5/10.0 49.5/56.150/6046/5297/97
52.0/60.0 11.3/15.0 71.1/81.180/9065/7597/97
10.8/12.52.3/ 3.0 25.2/25.230/3024/2497/97
17.3/20.03.8/ 5.0 27.8/31.130/3526/2997/97
26.0/30.05.6/ 7.5 38.6/43.640/4536/4097/97
34.7/40.07.5/10.0 49.5/56.150/6046/5297/97
52.0/60.0 11.3/15.0 71.1/81.180/9065/7597/97
4.9
10.8/12.52.3/ 3.0 26.6/26.630/3026/2699/99
17.3/20.03.8/ 5.0 29.5/32.930/3527/3099/99
26.0/30.05.6/ 7.5 40.4/45.445/5037/4299/99
34.7/40.07.5/10.0 51.3/57.960/6047/5399/99
52.0/60.0 11.3/15.0 72.9/82.980/9067/7699/99
10.8/12.52.3/ 3.0 26.6/26.630/3026/2699/99
17.3/20.03.8/ 5.0 29.5/32.930/3527/3099/99
26.0/30.05.6/ 7.5 40.4/45.445/5037/4299/99
34.7/40.07.5/10.0 51.3/57.960/6047/5399/99
52.0/60.0 11.3/15.0 72.9/82.980/9067/7699/99
6.3/ 7.22.3/ 3.0 20.3/20.325/2520/2091/91
10.0/11.53.8/ 5.0 20.3/20.525/2520/2091/91
15.0/17.35.6/ 7.5 24.9/27.825/3023/2691/91
20.0/23.17.5/10.0 31.1/35.035/4029/3291/91
30.0/34.6 11.3/15.0 43.6/49.445/5040/4591/91
4.9
6.3/ 7.22.3/ 3.0 20.3/20.325/2520/2091/91
10.0/11.53.8/ 5.0 20.3/20.525/2520/2091/91
15.0/17.35.6/ 7.5 24.9/27.825/3023/2691/91
20.0/23.17.5/10.0 31.1/35.035/4029/3291/91
30.0/34.6 11.3/15.0 43.6/49.445/5040/4591/91
Nominal
kW*
MCAMOCP†FLALRA
——21.9/21.925/2522/2274/74
——21.9/21.925/2522/2274/74
——23.3/23.325/2523/2376/76
——23.3/23.325/2523/2376/76
——25.2/25.230/3024/2497/97
——25.2/25.230/3024/2497/97
——26.6/26.630/3026/2699/99
——26.6/26.630/3026/2699/99
——20.3/20.325/2520/2091/91
——20.3/20.325/2520/2091/91
AB = 224 v
BC = 231 v
AC = 226 v
Average Voltage =
= 1.76%
224 + 231 + 226
681
=
=
227
3
3
4
227
DISCONNECT
SIZE
12
Page 13
NOMINAL
POWER SUPPLY
UNIT
50PG
(cont)
Volts -Ph-Hz
208/230-3-6018725311.5771.01.4
04
460-3-604145065.1350.5
575-3-605186334.3310.5
208/230-1-6018725320.51091.0
05
208/230-3-6018725314.6911.0
*See Legend on next page.
Table 2 -- Electrical Data -- Units Without Optional Convenience Outlet (cont)
Table 2 -- Electrical Data -- Units Without Optional Convenience Outlet (cont)
UNIT
50PG
05
(cont)
NOMINAL
POWER SUPPLY
Volts -Ph-Hz
460-3-604145067.1460.5
VOLTAGE
RANGE
COMPRESSOR
Min MaxRLALRAFLA
50PG03--07
575-3-605186335.1340.5
06
208/230-1-6018725326.91451.5
FLA --- Fu l l Lo a d A mps
HACR --- Heating, Air Conditioning and Refrigeration
IFM --- Indoor (Evaporator) Fan Motor
LRA --- L oc k ed Rot o r A mp s
MCA --- Minimum Circuit Amps
MOCP --- M aximum Overcurrent Protection
NEC --- Natio nal Electrical Code
OFM --- Outdoor (Condenser) Fan Motor
RLA --- RatedLoadAmps
*Heater capacity (kW) is based o n heater voltage of 208v, 240v, 480v, or 600v. If power
distribution voltage to unit varies from rated heater voltage, heater kW will vary accordingly.
{ Fuse or HACR ci rcuit breaker.
NOTES:
1. In comp liance with NE C require ments for multim otor and combin a tion load equip ment (refe r
2. Unbalanced 3- Phase Supply Voltage
% Voltage Imbalance= 100 x
LEGEND
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.
Never operate a motor where a phase imb alance in supply voltage is greater than 2%.Use
the following formula to deter mine the percentage of voltage imb alance.
max voltage deviation from average voltage
averag e voltage
OFM
FLA
POWER
EXHAUST
FLA
—
0.6
—
1.4
—
1.4
IFM
TYPE
Low2.1
High2.6
Low2.1
High2.6
Low2.1
High2.0
Low2.1
High2.0
Low4.9
High7.0
Low4.9
High7.0
E xa mp le : S up p ly v ol ta ge i s 2 3 0 --- 3 ---6 0
Determine maxim um deviation from average voltage.
(AB) 227 – 224 = 3 v
(BC) 231 – 227 = 4 v
(AC) 227 – 226 = 1 v
Maximum deviation is 4 v.
Deter mine per cent of voltage imbalance .
% Voltage Imbalance= 100 x
This amou nt of phase im balance is satisfactor y as it is be low the maxim um allowable 2%.
IMPORTANT: If the supply voltage phase imb alance is more than 2 %, contact your local el ectric
utility company immed iately.
Table 2 -- Electrical Data -- Units Without Optional Convenience Outlet (cont)
VOLTAGE
RANGE
Min MaxRLALRAFLA
COMPRESSOR
OFM
FLA
POWER
EXHAUST
FLA
—
1.4
—
0.6
—
1.4
IFM
TYPE
Low
High
Low
High
Low
High
Low
High
Low
High
Low
High
Low5.2
High7.5
ELECTRIC HEATPOWER SUPPLY
IFM
FLA
10.0/11.53.8/ 5.028.7/28.730/3028/28 156/156
15.0/17.35.6/ 7.528.7/28.730/3028/28 156/156
20.0/23.17.5/10.031.5/35.435/4029/33 156/156
30.0/34.6 11.3/15.044.0/49.845/5040/46 156/156
40.0/46.2 15.0/20.056.5/64.360/7052/59 156/156
50.0/57.7 18.8/25.069.0/78.670/8063/72 156/156
10.0/11.53.8/ 5.028.7/28.730/3028/28 156/156
15.0/17.35.6/ 7.528.7/28.730/3028/28 156/156
20.0/23.17.5/10.031.5/35.435/4029/33 156/156
30.0/34.6 11.3/15.044.0/49.845/5040/46 156/156
40.0/46.2 15.0/20.056.5/64.360/7052/59 156/156
50.0/57.7 18.8/25.069.0/78.670/8063/72 156/156
5.2
10.0/11.53.8/ 5.030.1/30.135/3530/30 158/158
15.0/17.35.6/ 7.530.1/30.135/3530/30 158/158
20.0/23.17.5/10.033.3/37.135/4031/34 158/158
30.0/34.6 11.3/15.045.8/51.550/6042/47 158/158
40.0/46.2 15.0/20.058.3/66.060/7054/61 158/158
50.0/57.7 18.8/25.070.8/80.480/9065/74 158/158
10.0/11.53.8/ 5.030.1/30.135/3530/30 158/158
15.0/17.35.6/ 7.530.1/30.135/3530/30 158/158
20.0/23.17.5/10.033.3/37.135/4031/34 158/158
30.0/34.6 11.3/15.045.8/51.550/6042/47 158/158
40.0/46.2 15.0/20.058.3/66.060/7054/61 158/158
50.0/57.7 18.8/25.070.8/80.480/9065/74 158/158
11.510.017.6201667
17.315.024.9252367
23.120.032.1353067
28.925.039.4403667
11.510.017.6201667
17.315.024.9252367
23.120.032.1353067
2.6
2.0
28.925.039.4403667
11.510.018.4201768
17.315.025.6302468
23.120.032.9353068
28.925.040.1453768
11.510.018.4201768
17.315.025.6302468
23.120.032.9353068
28.925.040.1453768
13.915.019.9201853
18.520.025.6302453
23.125.031.4352953
13.915.019.9201853
18.520.025.6302453
23.125.031.4352953
13.915.021.6252055
18.520.027.4302555
23.125.033.1353055
13.915.021.6252055
18.520.027.4302555
23.125.033.1353055
10.0/11.53.8/ 5.032.3/32.335/3531/31 182/182
15.0/17.35.6/ 7.532.3/32.335/3531/31 182/182
20.0/23.17.5/10.032.3/35.435/4031/33 182/182
30.0/34.6 11.3/15.044.0/49.845/5040/46 182/182
40.0/46.2 15.0/20.056.5/64.360/7052/59 182/182
50.0/57.7 18.8/25.069.0/78.670/8063/72 182/182
10.0/11.53.8/ 5.034.6/34.635/3534/34 208/208
15.0/17.35.6/ 7.534.6/34.635/3534/34 208/208
20.0/23.17.5/10.034.6/38.335/4034/35 208/208
30.0/34.6 11.3/15.046.9/52.650/6043/48 208/208
40.0/46.2 15.0/20.059.4/67.160/7055/62 208/208
50.0/57.7 18.8/25.071.9/81.580/9066/75 208/208
Nominal
——28.7/28.730/3028/28 156/156
——28.7/28.730/3028/28 156/156
——30.1/30.135/3530/30 158/158
——30.1/30.135/3530/30 158/158
——13.0151367
5.85.013.0151367
8.77.514.1151367
——13.0151367
5.85.013.0151367
8.77.514.1151367
——13.6151368
5.85.013.6151368
8.77.514.9151468
——13.6151368
5.85.013.6151368
8.77.514.9151468
——10.4151053
9.210.014.0151353
——10.4151053
9.210.014.0151353
——11.8151255
9.210.015.8201455
——11.8151255
9.210.015.8201455
——32.3/32.335/3531/31 182/182
——34.6/34.635/3534/34 208/208
kW*
DISCONNECT
SIZE
MCAMOCP†FLALRA
50PG03--07
15
Page 16
Table 2 -- Electrical Data -- Units Without Optional Convenience Outlet (cont)
UNIT
50PG
NOMINAL
POWER SUPPLY
Volts -Ph-Hz
208/230-3-6018725320.51491.51.4
50PG03--07
07
(cont)
460-3-604145069.6750.8
575-3-605186337.6540.8
FLA --- Fu l l Lo a d A mps
HACR --- Heating, Air Conditioning and Refrigeration
IFM --- Indoor (Evaporator) Fan Motor
LRA --- L oc k ed Rot o r A mp s
MCA --- Minimum Circuit Amps
MOCP --- M aximum Overcurrent Protection
NEC --- Natio nal Electrical Code
OFM --- Outdoor (Condenser) Fan Motor
RLA --- RatedLoadAmps
*Heater capacity (kW) is based o n heater voltage of 208v, 240v, 480v, or 600v. If power
distribution voltage to unit varies from rated heater voltage, heater kW will vary accordingly.
{ Fuse or HACR ci rcuit breaker.
NOTES:
1. In comp liance with NE C require ments for multim otor and combin a tion load equip ment (refe r
2. Unbalanced 3- Phase Supply Voltage
% Voltage Imbalance= 100 x
LEGEND
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.
Never operate a motor where a phase imb alance in supply voltage is greater than 2%.Use
the following formula to deter mine the percentage of voltage imb alance.
VOLTAGE
RANGE
COMPRESSOR
Min MaxRLALRAFLA
max voltage deviation from average voltage
averag e voltage
OFM
FLA
POWER
EXHAUST
FLA
—
0.6
—
1.4
IFM
TYPE
Low5.2
High7.5
Low2.6
High3.4
Low2.6
High3.4
Low2.0
High2.8
Low2.0
High2.8
E xa mp le : S up p ly v ol ta ge i s 2 3 0 --- 3 ---6 0
Determine maxim um deviation from average voltage.
(AB) 227 – 224 = 3 v
(BC) 231 – 227 = 4 v
(AC) 227 – 226 = 1 v
Maximum deviation is 4 v.
Deter mine per cent of voltage imbalance .
% Voltage Imbalance= 100 x
This amou nt of phase im balance is satisfactor y as it is be low the maxim um allowable 2%.
IMPORTANT: If the supply voltage phase imb alance is more than 2 %, contact your local el ectric
utility company immed iately.
ELECTRIC HEATPOWER SUPPLY
IFM
FLA
10.0/11.53.8/ 5.033.7/33.735/3533/33 184/184
15.0/17.35.6/ 7.533.7/33.735/3533/33 184/184
20.0/23.17.5/10.033.7/37.135/4033/34 184/184
30.0/34.6 11.3/15.045.8/51.550/6042/47 184/184
40.0/46.2 15.0/20.058.3/66.060/7054/61 184/184
50.0/57.7 18.8/25.070.8/80.480/9065/74 184/184
10.0/11.53.8/ 5.036.0/36.040/4036/36 210/210
15.0/17.35.6/ 7.536.0/36.040/4036/36 210/210
20.0/23.17.5/10.036.1/40.040/4536/37 210/210
30.0/34.6 11.3/15.048.6/54.450/6045/50 210/210
40.0/46.2 15.0/20.061.1/68.970/7056/63 210/210
50.0/57.7 18.8/25.073.6/83.380/9068/77 210/210
11.510.017.6201692
17.315.024.9252392
23.120.032.1353092
28.925.039.4403692
11.510.018.62017105
17.315.025.93024105
23.120.033.13530105
28.925.040.44537105
11.510.018.4201793
17.315.025.6302493
23.120.032.9353093
28.925.040.1453793
11.510.019.42018106
17.315.026.63024106
23.120.033.93531106
28.925.041.14538106
13.915.019.9201867
18.520.025.6302467
23.125.031.4352967
27.730.037.1403467
13.915.020.9251978
18.520.026.6302478
23.125.032.4353078
27.730.038.1403578
13.915.021.6252069
18.520.027.4302569
23.125.033.1353069
27.730.038.9403669
13.915.022.6252180
18.520.028.4302680
23.125.034.1353180
27.730.039.9403780
Nominal
kW*
MCAMOCP†FLALRA
——33.7/33.735/3533/33 184/184
——36.0/36.040/4036/36 210/210
——15.4201592
5.85.015.4201592
8.77.515.4201592
——16.22016105
5.85.016.22016105
8.77.516.22016105
——16.0201693
5.85.016.0201693
8.77.516.0201693
——16.82017106
5.85.016.82017106
8.77.516.82017106
——12.3151267
9.210.014.0151367
——13.1151378
9.210.015.0151478
——13.7151469
9.210.015.8201469
——14.5151480
9.210.016.8201580
AB = 224 v
BC = 231 v
AC = 226 v
Average Voltage =
= 1.76%
224 + 231 + 226
681
=
=
227
3
3
4
227
DISCONNECT
SIZE
16
Page 17
Table 3 – Electrical Data -- Units With Optional Powered Convenience Outlet
UNIT
50PG
03
NOMINAL
POWER SUPPLY
Volts -Ph-Hz
208/230-1-6018725312.8601.0
208/230-1-6018725315.4831.0
04
208/230-3-6018725311.5771.0—
FLA --- Fu l l Lo a d A mps
HACR --- Heating, Air Conditioning and Refrigeration
IFM --- Indoor (Evaporator) Fan Motor
LRA --- L oc k ed Rot o r A mp s
MCA --- Minimum Circuit Amps
MOCP --- M aximum Overcurrent Protection
NEC --- Natio nal Electrical Code
OFM --- Outdoor (Condenser) Fan Motor
RLA --- RatedLoadAmps
*Heater capacity (kW) is based o n heater voltage of 208v, 240v, 480v, or 600v. If power
distribution voltage to unit varies from rated heater voltage, heater kW will vary accordingly.
{ Fuse or HACR ci rcuit breaker.
NOTES:
1. In comp liance with NE C require ments for multim otor and combin a tion load equip ment (refe r
2. Unbalanced 3- Phase Supply Voltage
% Voltage Imbalance= 100 x
LEGEND
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.
Never operate a motor where a phase imb alance in supply voltage is greater than 2%.Use
the following formula to deter mine the percentage of voltage imb alance.
VOLTAGE
RANGE
Min MaxRLALRAFLA
COMPRESSOR
OFM
FLA
max voltage deviation from average voltage
averag e voltage
POWER
EXHAUST
FLA
1.4
1.4
IFM
IFM
FLA
TYPE
Low
—
High
Low
High
Low
—
High
Low
High
Low
High
E xa mp le : S up p ly v ol ta ge i s 2 3 0 --- 3 ---6 0
Determine maxim um deviation from average voltage.
(AB) 227 – 224 = 3 v
(BC) 231 – 227 = 4 v
(AC) 227 – 226 = 1 v
Maximum deviation is 4 v.
Deter mine per cent of voltage imbalance .
% Voltage Imbalance= 100 x
This amou nt of phase im balance is satisfactor y as it is be low the maxim um allowable 2%.
IMPORTANT: If the supply voltage phase imb alance is more than 2 %, contact your local el ectric
utility company immed iately.
Table 3 -- Electrical Data -- Units With Optional Powered Convenience Outlet (cont)
NOMINAL
POWER SUPPL Y
UNIT
50PG
Volt s-Ph -Hz
460-3-604145067.1460.5
05
(cont)
575-3-605186335.1340.5
06
208/230-1-6018725326.91451.5
FLA --- Fu l l Lo a d A mps
HACR --- Heating, Air Conditioning and Refrigeration
IFM --- Indoor (Evaporator) Fan Motor
LRA --- L oc k ed Rot o r A mp s
MCA --- Minimum Circuit Amps
MOCP --- M aximum Overcurrent Protection
NEC --- Natio nal Electrical Code
OFM --- Outdoor (Condenser) Fan Motor
RLA --- RatedLoadAmps
*Heater capacity (kW) is based o n heater voltage of 208v, 240v, 480v, or 600v. If power
distribution voltage to unit varies from rated heater voltage, heater kW will vary accordingly.
{ Fuse or HACR ci rcuit breaker.
NOTES:
1. In comp liance with NE C require ments for multim otor and combin a tion load equip ment (refe r
2. Unbalanced 3- Phase Supply Voltage
% Voltage Imbalance= 100 x
LEGEND
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.
Never operate a motor where a phase imb alance in supply voltage is greater than 2%.Use
the following formula to deter mine the percentage of voltage imb alance.
VOLTAGE
RANGE
Min MaxRLALR AFLA
COMPRESSO R
OFM
FLA
max voltage deviation from average voltage
averag e voltage
POWER
EXHAUST
FLA
—
0.6
—
1.4
—
1.4
IFM
IFM
FLA
TYPE
Low2.1
High2.6
Low2.1
High2.6
Low2.1
High2.0
Low2.1
High2.0
Low4.9
High7.0
Low4.9
High7.0
E xa mp le : S up p ly v ol ta ge i s 2 3 0 --- 3 ---6 0
Determine maxim um deviation from average voltage.
(AB) 227 – 224 = 3 v
(BC) 231 – 227 = 4 v
(AC) 227 – 226 = 1 v
Maximum deviation is 4 v.
Deter mine per cent of voltage imbalance .
% Voltage Imbalance= 100 x
This amou nt of phase im balance is satisfactor y as it is be low the maxim um allowable 2%.
IMPORTANT: If the supply voltage phase imb alance is more than 2 %, contact your local el ectric
utility company immed iately.
Table 3 -- Electrical Data -- Units With Optional Powered Convenience Outlet (cont)
NOMINAL
POWER SUPPLY
Volts -Ph-Hz
208/230-3-6018725317.61231.5
460-3-604145067.7500.8
575-3-605186336.1400.8
208/230-3-6018725320.51491.5—
VOLTAGE
RANGE
Min MaxRLALRAFLA
COMPRESSOR
OFM
FLA
POWER
EXHAUST
FLA
—
1.4
—
0.6
—
1.4
IFM
TYPE
Low
High
Low
High
Low
High
Low
High
Low
High
Low
High
Low5.2
High7.5
ELECTRIC HEATPOWER SUPPLY
IFM
FLA
10.0/11.53.8/ 5.033.5/33.535/3533/33 161/161
15.0/17.35.6/ 7.533.5/34.135/3533/33 161/161
20.0/23.17.5/10.037.5/41.440/4535/38 161/161
30.0/34.6 11.3/15.050.0/55.860/6046/51 161/161
40.0/46.2 15.0/20.062.5/70.370/8058/65 161/161
50.0/57.7 18.8/25.075.0/84.680/9069/78 161/161
10.0/11.53.8/ 5.033.5/33.535/3533/33 161/161
15.0/17.35.6/ 7.533.5/34.135/3533/33 161/161
20.0/23.17.5/10.037.5/41.440/4535/38 161/161
30.0/34.6 11.3/15.050.0/55.860/6046/51 161/161
40.0/46.2 15.0/20.062.5/70.370/8058/65 161/161
50.0/57.7 18.8/25.075.0/84.680/9069/78 161/161
5.2
10.0/11.53.8/ 5.034.9/34.935/3535/35 163/163
15.0/17.35.6/ 7.534.9/35.935/4035/35 163/163
20.0/23.17.5/10.039.3/43.140/4536/40 163/163
30.0/34.6 11.3/15.051.8/57.560/6048/53 163/163
40.0/46.2 15.0/20.064.3/72.070/8059/66 163/163
50.0/57.7 18.8/25.076.8/86.480/9071/79 163/163
10.0/11.53.8/ 5.034.9/34.935/3535/35 163/163
15.0/17.35.6/ 7.534.9/35.935/4035/35 163/163
20.0/23.17.5/10.039.3/43.140/4536/40 163/163
30.0/34.6 11.3/15.051.8/57.560/6048/53 163/163
40.0/46.2 15.0/20.064.3/72.070/8059/66 163/163
50.0/57.7 18.8/25.076.8/86.480/9071/79 163/163
11.510.020.4251969
17.315.027.6302569
23.120.034.9353269
28.925.042.1453969
11.510.020.4251969
17.315.027.6302569
23.120.034.9353269
2.6
2.0
28.925.042.1453969
11.510.021.1251970
17.315.028.4302670
23.120.035.6403370
28.925.042.9453970
11.510.021.1251970
17.315.028.4302670
23.120.035.6403370
28.925.042.9453970
13.915.022.0252055
18.520.027.8302655
23.125.033.5353155
13.915.022.0252055
18.520.027.8302655
23.125.033.5353155
13.915.023.8252257
18.520.029.5302757
23.125.035.3403257
13.915.023.8252257
18.520.029.5302757
23.125.035.3403257
10.0/11.53.8/ 5.037.1/37.140/4037/37 187/187
15.0/17.35.6/ 7.537.1/37.140/4037/37 187/187
20.0/23.17.5/10.037.5/41.440/4537/38 187/187
30.0/34.6 11.3/15.050.0/55.860/6046/51 187/187
40.0/46.2 15.0/20.062.5/70.370/8058/65 187/187
50.0/57.7 18.8/25.075.0/84.680/9069/78 187/187
10.0/11.53.8/ 5.039.4/39.440/4039/39 213/213
15.0/17.35.6/ 7.539.4/39.440/4039/39 213/213
20.0/23.17.5/10.040.4/44.345/4539/41 213/213
30.0/34.6 11.3/15.052.9/58.660/6049/54 213/213
40.0/46.2 15.0/20.065.4/73.170/8060/67 213/213
50.0/57.7 18.8/25.077.9/87.580/9072/81 213/213
Nominal
——33.5/33.535/3533/33 161/161
——33.5/33.535/3533/33 161/161
——34.9/34.935/3535/35 163/163
——34.9/34.935/3535/35 163/163
——15.2201569
5.85.015.2201569
8.77.516.9201669
——15.2201569
5.85.015.2201569
8.77.516.9201669
——15.8201670
5.85.015.8201670
8.77.517.6201670
——15.8201670
5.85.015.8201670
8.77.517.6201670
——12.1151255
9.210.016.1201555
——12.1151255
9.210.016.1201555
——13.5151457
9.210.017.9201657
——13.5151457
9.210.017.9201657
——37.1/37.140/4037/37 187/187
——39.4/39.440/4039/39 213/213
kW*
MCAMOCP†FLALRA
DISCONNECT
SIZE
20
Page 21
Table 3 -- Electrical Data -- Units With Optional Powered Convenience Outlet (cont)
UNIT
50PG
NOMINAL
POWER SUPPLY
Volts -Ph-Hz
208/230-3-6018725320.51491.51.4
460-3-604145069.6750.8
07
(cont)
575-3-605186337.6540.8
FLA --- Fu l l Lo a d A mps
HACR --- Heating, Air Conditioning and Refrigeration
IFM --- Indoor (Evaporator) Fan Motor
LRA --- L oc k ed Rot o r A mp s
MCA --- Minimum Circuit Amps
MOCP --- M aximum Overcurrent Protection
NEC --- Natio nal Electrical Code
OFM --- Outdoor (Condenser) Fan Motor
RLA --- RatedLoadAmps
*Heater capacity (kW) is based o n heater voltage of 208v, 240v, 480v, or 600v. If power
distribution voltage to unit varies from rated heater voltage, heater kW will vary accordingly.
{ Fuse or HACR ci rcuit breaker.
NOTES:
1. In comp liance with NE C require ments for multim otor and combin a tion load equip ment (refe r
2. Unbalanced 3- Phase Supply Voltage
% Voltage Imbalance= 100 x
LEGEND
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.
Never operate a motor where a phase imb alance in supply voltage is greater than 2%.Use
the following formula to deter mine the percentage of voltage imb alance.
VOLTAGE
RANGE
Min MaxRLALRAFLA
COMPRESSOR
OFM
FLA
max voltage deviation from average voltage
averag e voltage
POWER
EXHAUST
FLA
0.6
1.4
—
—
IFM
TYPE
Low5.2
High7.5
Low2.6
High3.4
Low2.6
High3.4
Low2.0
High2.8
Low2.0
High2.8
E xa mp le : S up p ly v ol ta ge i s 2 3 0 --- 3 ---6 0
Determine maxim um deviation from average voltage.
(AB) 227 – 224 = 3 v
(BC) 231 – 227 = 4 v
(AC) 227 – 226 = 1 v
Maximum deviation is 4 v.
Deter mine per cent of voltage imbalance .
% Voltage Imbalance= 100 x
This amou nt of phase im balance is satisfactor y as it is be low the maxim um allowable 2%.
IMPORTANT: If the supply voltage phase imb alance is more than 2 %, contact your local el ectric
utility company immed iately.
ELECTRIC HEATPOWER SUPPLY
IFM
FLA
10.0/11.53.8/ 5.038.5/38.540/4038/38 189/189
15.0/17.35.6/ 7.538.5/38.540/4038/38 189/189
20.0/23.17.5/10.039.3/43.140/4538/40 189/189
30.0/34.6 11.3/15.051.8/57.560/6048/53 189/189
40.0/46.2 15.0/20.064.3/72.070/8059/66 189/189
50.0/57.7 18.8/25.076.8/86.480/9071/79 189/189
10.0/11.53.8/ 5.040.8/40.845/4541/41 215/215
15.0/17.35.6/ 7.540.8/40.845/4541/41 215/215
20.0/23.17.5/10.042.1/46.045/5041/42 215/215
30.0/34.6 11.3/15.054.6/60.460/7050/56 215/215
40.0/46.2 15.0/20.067.1/74.970/8062/69 215/215
50.0/57.7 18.8/25.079.6/89.380/9073/82 215/215
11.510.020.4251994
17.315.027.6302594
23.120.034.9353294
28.925.042.1453994
11.510.021.42520107
17.315.028.63026107
23.120.035.94033107
28.925.043.14540107
11.510.021.1251995
17.315.028.4302695
23.120.035.6403395
28.925.042.9453995
11.510.022.12520108
17.315.029.43027108
23.120.036.64034108
28.925.043.94540108
13.915.022.0252069
18.520.027.8302669
23.125.033.5353169
27.730.039.3403669
13.915.023.0252180
18.520.028.8302680
23.125.034.5353280
27.730.040.3453780
13.915.023.8252271
18.520.029.5302771
23.125.035.3403271
27.730.041.0453871
13.915.024.8252382
18.520.030.5352882
23.125.036.3403382
27.730.042.0453982
Nominal
kW*
MCAMOCP†FLALRA
——38.5/38.540/4038/38 189/189
——40.8/40.845/4541/41 215/215
——17.6201794
5.85.017.6201794
8.77.517.6201794
——18.42018107
5.85.018.42018107
8.77.518.42018107
——18.2201895
5.85.018.2201895
8.77.518.2201895
——19.02019108
5.85.019.02019108
8.77.519.02019108
——14.0151469
9.210.016.1201569
——14.8151580
9.210.017.1201680
——15.4201671
9.210.017.9201671
——16.2201682
9.210.018.9201782
AB = 224 v
BC = 231 v
AC = 226 v
Average Voltage =
= 1.76%
224 + 231 + 226
681
=
=
227
3
3
4
227
DISCONNECT
SIZE
50PG03--07
21
Page 22
Step 7 — Install Outdoor Air Hoods (Units with
/
/
/
Economizer)
Perform the following procedure to install the outdoor--air hoods:
1. Economizer and barometric relief hoods are located in the
condenser section under the slanted coil for shipping. (See
Fig. 14.) Barometric relief/power exhaust hood is shipped
inside of economizer hood. Remove screws that secure the
wooden rails of the hood assemblies to the unit. Save
screws. Slide complete assembly from condenser section.
2. Remove the screws that secure the economizer and
barometric relief/power exhaust hoods to the wooden
railing. Discard or recycle wooden rails. Save screws.
3. The barometric relief damper is factory mounted onto the
economizer panel for shipping. Remove the screw holding
the barometric relief damper to the panel. Damper should be
free to swing open during operation. (See Fig. 15.)
POWER EXHAUST
50PG03--07
4. Hang the barometric relief/power exhaust hood on the
mounting flange on the economizer panel. Secure hood to
panel with screws saved from Step 2. (See Fig. 15 and 16.)
5. Align hole in flange of economizer panel with left edge of
hood. Hang economizer hood on the top flange of the
economizer panel by rotating hood until top flange of the
economizer hood engages the bent flange on the
economizer panel. Rotate hood until hood is flush with the
economizer panel. Hood will support itself from flange.
Align holes in hood with holes in panel and secure hood to
panel with screws saved from Step 2. (See Fig. 16 and 17.)
Step 8 — 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.
BAROMETRIC
RELIEF HOOD
POWER EXHAUST
BAROMETRIC
RELIEF HOOD
WOODEN RAILS
ECONOMIZER
HOOD
Fig. 14 -- Economizer and Baromatric
Relief/Power Exhaust Hoods Shipping Positions
ECONOMIZER
HOOD
POWER EXHAUST
BAROMETRIC
RELIEF HOOD
C06290
MOUNTING
FLANGE
C06262
Fig. 16 -- Barometric Relief/Power Exhaust
Hood Flange
MOUNTING
FLANGE
ECONOMIZER
HOOD
ECONOMIZER
PANEL
BAROMETRIC
RELIEF DAMPER SCREW
C06260
Fig. 15 -- Hood Installation
Copyright 2010 Carrier Corp. S 7310 W. Morris St. S Indianapolis, IN 46231Printed in U.S.A.Edition Date: 03/10
Manufacturer reserves the right to change, at any ti me, specifications and designs without notice and without obligations.
22
C06263
Fig. 17 -- Economizer Flange
Catalog No:50PG---40SI
Replaces: 50PG---36SI
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