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equipped with a single-pole contactor. Exercise caution
when servicing as only one leg of the power supply is
broken with the contractor.
High Voltage Wiring
Rated Voltage Minimum Supply Voltage Maximum Supply Voltage
208/230V
197
The unit transformer is factory connected for 240V
operation. If the unit is to operate on 208V, reconnect
the transformer primary lead as shown on the unit wiring
diagram. The induced draft blower on some models is
equipped with a low speed 240V lead (blue) and a low
speed 208V lead (black). If equipped, connect the induced
draft blower low speed 208V lead (black) in place of the low
speed 240V lead (blue). Place the unused 240V lead on
the "PARK" terminal located on ignition control.
•
Connect two leads to terminals L1 & L2 in the
electrical control section, using wire sizes specified in
wiring table below.
Maximum Allowable
Length in Feet to Limit
Voltage Drop to 2%
Supply Wire Length - Feet
200
150
100
50
Wiring Table
Thermostat Controls
Recommended: TSTATGTS3275 (Emerson Dual Fuel
thermostat) with TSTATTSORS outdoor temperature
sensor.
ALTERNATE: A 1-stage cool/2-stage heat pump
thermostat with OTDFPKG-01 outdoor temperature sensor
kit.
IMPORTANT NOTE: For optimal performance, an outdoor
temperature sensor should be used with the control
thermostat to determine when the unit switches from heat
pump mode to gas mode. The unit is compatible with a
standard heat pump thermostat with a minimum of 1 cool
- 2 heat. If an outdoor sensor is not installed, the gas will
not ignite until the control thermostat calls for a 2nd stage
of heat.
Low Voltage Wiring
Heat Pumps - Connect 24V wires from the thermostat to
the corresponding wires in the control box using No. 18
AWG as shown in the table below:
253
15 20 25 30 35 40 45 50
6
4
4
4
3
3
8
6
6
4
4
4
10 8
8
6
6
6
14 12 10 8
8
8
A/GPDM3
TERMINAL WIRE
Internal Wiring
A diagram detailing the internal wiring of this unit is located
on the Goodman labeled access panel. 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.
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
2
2
disconnect must be in sight of the unit.
3
3
2. Wire size based on 60°C rated wire insulation and
4
4
30°C Ambient Temperature (86°F).
6
6
3. For more than three conductors in a raceway or
cable, see the N.E.C. for derating the ampacity of
each conductor.
To avoid property damage or personal injury due to fire,
use only copper conductors.
To avoid electrical shock, wiring to the unit must be
polarized and grounded.
CIRCULATING AIR AND FILTERS
Airflow Conversion
Units can easily be converted from horizontal to down-
discharge airflow delivery. In down-discharge or high static
installations, the installer should measure the total external
static and review the blower performance charts before
performing the installation. In some installations it will be
necessary to change the blower speed to provide proper air
flow.
11
24-48
THERMOSTAT
Red
R (24V)
Green
G (Fan)
Orange
O (Rev. Value)
White
W1 (Heat, 2nd)
Brown
W2 (Heat, 3rd)
Yellow
Y (Cool)
Blue
C (24V Common)
CAUTION
WARNING
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Troubleshooting
