GPGM3 Installation Manual
19
Blower Speed Adjustments
Refer to the wiring diagram in the appendix to verify speed
tap settings.
All models are equipped with EEM motors. EEM motors are
constant torque motors with very low power consumption.
-
nal block on the motor.
Heating-White Lead Cooling-Yellow Lead
T1 - Low Speed T4 - Low Speed
T2 - Medium Speed T5 - High Speed
T3 - High Speed
Speed
Tap
Definition
Lead
Color
Speed
Tap
Definition
Lead
Color
T1
Low
Speed Heat
White
T3
Low Speed
Cool
Purple
T2
High
Speed Heat
Brown
T4
High Speed
Cool
Yellow
T5
High Speed
Cool Hi-Static
HEATING
COOLING
-
Limit Check
Check limit control operation after 15 minutes of operation
1. After several minutes the main burners must go OFF.
Blower will continue to run.
2. Remove air restrictions and main burners will relight
after a cool down period of a few minutes.
Adjust the thermostat setting below room temperature.
1. Main burners must go OFF.
2. Circulating Air Blower will continue to run for 120, 135
on the setting.
1
2
3
10
11
12
9
6
2 3
6
5
8
9
11
12
L2
L2L2
L2
D1
L1
L1 UNUSED
HEAT
COOL
FS
K2
K1
R8
R10
R3
K4
K3
R31
LED
1068-83-400A
C27
D3
R38
D9
D10
R34
R35
R4
R11
R42
D12
R36
D11
D14
C20
Z1
R29
R22
C13
R25
D5
D7
L O COOL
HI C OOL
L O HE AT
HI HEAT
U6
U7
U4
U5
U3
K2
K1
P1
ECON
STAGE
DELAY
SPEEDUP
S W1
F AU L T
RECAL L
BLOWER
OFF DELAY
F1
R C W1 W2
G Y1 Y2
WARNING
Unit Shutdown
1. Set the thermostat to lowest setting.
2.
3. Remove the heat exchanger door on the side of the
unit by removing screws.
4. Move the gas control valve switch to the OFF position.
Do not force.
5.
6. Replace the heat exchanger door on the unit.
7. If cooling and/or air circulation will be desired, turn
ON the electrical power.
Compressor Protection Devices
The compressor includes components which are designed
to protect the compressor against abnormal operating
conditions.
WARNING