Goodman GMV series - Page 63

PRODUCT DESIGN
63
W1
G
Two-Stage Heating Only
R
C G R W1Y
Furnace Integrated
Control Module
Thermostat
Two-Stage Heating
()
C
W2
W2
Typical Field Wiring - Two-Stage Gas Furnaces
(24 VAC Control Circuit)
W
G
Y
Single-Stage Heating with Single-Stage Cooling
R
B/C G R W1 W2O
YLO
Y
DEHUM
Y C
NEU
HOT
Furnace Integrated
Control Module
Thermostat
Single-Stage Heating
with
Single-Stage Cooling
()
Remote
Condensing Unit
(Single-Stage Cooling)
Dehumidistat
[Optional]
NOTE:
To apply a single-stage heating thermostat, the
thermostat selector jumper on the integrated Control
module
must
be set on single stage.
W1
Two-Stage Heating with Single-Stage Cooling
W2
W1 W2
Remote
Condensing Unit
HOT
Dehumidistat
[Optional]
Two-Stage Heating with Two-Stage Cooling
W1 W2
YLO
HOT
Remote
Condensing Unit
(Two-Stage Cooling)
Dehumidistat
[Optional]
YLO
YLO
W2
W1
Typical Field Wiring
Two-Stage Variable Speed Gas Furnaces
(24VAC Control Circuit)
Single-Stage Thermostat Application - 80% and 90%
Variable Speed Two-Stage Furnaces
A single-stage thermostat with only one heating stage can
be used to control this furnace. The application of a single-
stage thermostat does not offer “true” thermostat-driven two-
stage operation, but provides a timed transition from low to
high stage. The furnace will run on low stage for a fixed
period of time before stepping up to high stage to satisfy the
thermostat’s call for heat. The delay period prior to stepping
up can be set at either 5 or 10 minutes through the DIP
switch adjacent to the Heat Off delay DIP switches on the
integrated control module. To use a single-stage thermo-
stat, turn off power to the furnace, move the thermostat se-
lection jumper on the integrated control module from the “two-
stage” position to the “single-stage” position, turn power back
on. Refer to the following figures.
3
2
1
T
W
O
S
I
N
G
L
E
TSTAT
OFF
3
2
1
T-Stat selection jumper in
single-stage thermostat
position.
DIP switch position 3: ON
Delay Period: 10 minutes.
DIP switch position 3: OFF
Delay Period: 5 minutes.
T
W
O
S
I
N
G
L
E
TSTAT
ON
Single-Stage Thermostat Application