Goodman GPH1536M41 - Wiring and Startup Procedures; Wiring Details; Startup, Adjustments, and Checks

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In accordance with the N.E.C. or local codes, install a branch cir-

cuit 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 ex-

tensive 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 ship-

ment. 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.

CONTACTOR

FOR INTERNAL WIRING SEE WIRING LABEL ATTACHED TO UNIT

24 VOLT CONTROL WIRING

See

*NOTE

*NOTE:

LOW VOLTAGE CONNECTORS do not apply to heat pumps with

electric heat.

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.

To wire the unit, make the following high and low voltage connec-

tions.

WARNING

HIGH VOLTAGE!

DISCONNECT ALL POWER BEFORE SERVICING OR INSTALLING

THIS UNIT.

MULTIPLE POWER SOURCES MAY BE PRESENT. FAILURE

TO DO SO MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR

DEATH.

HIGH V OLTAGE W IRING

• Single Phase- Two leads should be connected to terminals

L1 & L2 in the electrical control section, using wire sizes

specified in wiring table.

LOW V OLTAGE W IRING

• Heat Pumps- Connect 24V wires from the thermostat to

the corresponding wires in the control box using No. 18

AWG as follows:

GPH15 24 - 36 42 - 60

Terminal Thermostat Thermostat

Red R (24V) R (24V)

Green G (fan) G (fan)

Orange O (rev. valve) O (rev. valve)

White

W1 (heat, 2

) W1 (heat. 2

Brown

W2 (heat, 3

) W2 (heat, 3

Purple Not used Y1 (Low cool)

Yellow Y (cool) Y2 (Hi cool)

Thermostats must be set to energize "G" during cooling.

This is default on most all thermostats.

GPH1542 - GPH1560 have 2-stage cooling and require

2-stage heat/cool with optional

third stage electric heat thermostat.

*Optional field installed heat connections

INTERNAL W 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 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 64443322

150 86644433

100 108866644

50 141210108866

2. Wire size based on 60° C rated wire insulation and 30° C

Ambient Temperature (86° F).

3. For more than 3 conductors in a raceway or cable, see the

N.E.C. for derating the ampacity of each conductor.

STARTUP, ADJUSTMENTS, AND CHECKS