GM9S80 Installation Manual
17
ROOM THERMOSTAT
Y2
Y/Y1
C
G
R
W
Y2
Y/Y1
C
G
R
W
Y2
Y/Y1
C
G
R
W
TWIN
TWIN
COND UNIT
CONTACTOR
COND UNIT
CONTACTOR
FURNACE 1
FURNACE 2
-
The furnace integrated control module is equipped with line
voltage accessory terminals for controlling power to an op-
Humidifier
-
-
structions for locating, mounting, grounding, and controlling
these accessories. Accessory wiring connections are to be
made through the 1/4” quick connect terminals provided on
as shown.
If it is necessary for the installer to supply additional line
voltage wiring to the inside of the furnace, the wiring must
conform to all local codes, and have a minimum temperature
inside the furnace junction box.
H) is energized with 115 volts whenever the induced draft
blower is energized. The integrated control module electron-
whenever the circulator blower is energized. This terminal
transformer. The remaining primary transformer wire would
be connected to the Line N on the control board.
-
115 VAC EAC
115 VAC HUM
W R G C Y
The furnace integrated control module is equipped with
a low voltage terminal for providing power to an optional
energized any time the draft inducer is powered. See con-
nection diagram below.
This is a 24 volt circuit only, the common connec-
(where thermostat wires are connected). Wiring for this cir-
cuit must NOT be connected to the line N location where line
voltage neutral wires are connected.
24 VOLT HUM. &
HUMIDISTAT
W R G C Y
24V HUM Terminal is
energized when pressure
switch is closed