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C
D
ONDENSATE
RAIN
The condensate drain connection of the evaporator is a half
coupling of ¾" N.P.T. A trap must be provided to have proper
condensate drainage.
Unit
Drain
Connection
Flexible
Tubing-Hose
Or Pipe
Install condensate drain trap as shown. Use ¾ " drain
connection size or larger. Do not operate without trap. Unit
must be level or slightly inclined toward drain.
NOTE: All wiring should be made in accordance with the
National Electrical Code.
Consult your local Power Company to determine the
availability of sufficient power to operate the unit. Check the
voltage, frequency, and phase at the power supply to ensure
it corresponds to the unit's RATED VOLTAGE REQUIREMENT.
In accordance with the N.E.C. or local codes, install a branch
circuit fused disconnect near the unit. Determine wire sizes
and overcurrent protection from the unit nameplate ampacity
and in accordance with the Minimum Filter Size or the N.E.C.
The wiring should never be sized smaller than is
recommended by either of these two sources.
Fuses smaller than that recommended on the rating plate
could result in unnecessary fuse failure or service calls. The
use of protective devices of larger size than indicated could
result in extensive damage to the equipment. The
manufacturer bears no responsibility for damage caused to
equipment as result of the use of larger than is recommended
size protective devices.
All units have undergone a run test prior to packaging for
shipment. This equipment has been started at minimum rated
voltage and checked for satisfactory operation. Do not attempt
to operate this unit if the voltage is not within the minimum
and maximum voltages shown on nameplate.
All exterior wiring must be within approved weatherproof
conduit. The unit must be permanently grounded in
accordance with local codes, or in absence of local codes,
with N.E.C. ANSI/ NFPA NO. 70-1984 or latest edition by using
ground lug in the control box.
Fuses or HACR type circuit breakers may be used where
codes permit.
IMPORTANT NOTE: Some single phase units are equipped
with a single-pole contactor. Exercise caution when servicing
as only one leg of the power supply is broken with the contractor.
H
V
W
IGH
OLTAGE
IRING
•
Single Phase. Connect two leads to terminals L1 & L2 in
the electrical control section, using wire sizes specified
in wiring table.
PIPING
2" Minimum
3" Minimum
A Positive Liquid Seal
Is Required
WIRING
L
V
W
OW
OLTAGE
IRING
•
Heat Pumps. Connect 24V wires from the thermostat to
the corresponding wires in the control box using No. 18
AWG as follows:
GPC15
Terminal
Red
Green
White
Brown
Yellow
Blue
[A/G]PH15
24 - 43
Terminal
Thermostat
Red
R (24V)
Green
G (fan)
Orange
O (rev. valve)
White
W1 (heat, 2nd)
Brown
W2 (heat, 3rd)
Purple
Not used
Yellow
Y (cool)
Blue
C (24V Common)
Thermostats must be set to energize "G" during cooling.
This is default on most all thermostats.
*Optional field installed heat connections.
*PH1549 - *PH1560 have two-stage cooling and require
two-stage heat/cool with optional third stage electric heat
thermostat.
I
W
NTERNAL
IRING
A diagram detailing the internal wiring of this unit is located
on the electrical box cover. If any of the original wire supplied
with the appliance must be replaced, the wire gauge and
insulation must be the same as the original wiring.
Transformer is wired for 230 volts on the 208/230 models.
See wiring diagram for 208 volt wiring.
1. For branch circuit wiring (main power supply to unit
disconnect), the minimum wire size for the length of run
can be determined using the circuit ampacity found on the
unit rating plate and the table below. From the unit
disconnect to the unit, the smallest wire size allowable
may be used for the ampacity, as the disconnect must be
in sight of the unit.
BRANCH CIRCUIT AMPACITY 15 20 25 30 35 40 45 50
SUPPLY WIRE LENGTH -
FEET
200
150
100
50
2. Wire size based on 60°C rated wire insulation and 30°C
Ambient Temperature (86°F).
3. For more than three conductors in a raceway or cable, see
the N.E.C. for derating the ampacity of each conductor.
8
24 -60
Thermostat
R (24V)
G (fan)
W1 (heat*)
W2 (heat*)
Y (cool)
C (24V Common)
49 - 60
Thermostat
R (24V)
G (fan)
O (rev. valve)
W1 (heat. 2nd)*
W2 (heat, 3rd)*
Y1 (Low cool)
Y2 (Hi cool)
C (24V Common)
6
4
4
4
3
3
8
6
6
4
4
4
10
8
8
6
6
6
14 12 10 10
8
8
2
2
3
3
4
4
6
6
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