Johnson Controls GLAS Technical Bulletin page 16

Figure 11: Furnace-Integrated Auxiliary Device
AUX Device
re d
w e
P o
ic e
c e e v
rn a X D R u n
F u A U
R
C
C
Furnace
RC
W1
Figure 12: Two Wire Auxiliary Device without C Terminal
Humidifier
C
RC
W1
W2
RH
Figure 13: Two Wire Auxiliary Device with C Terminal
2-Wire AUX Device
C
RC
W1
W2
RH
GLAS Smart Thermostat Technical Bulletin
AUX
G
Y1
W2 Y2
RH O
HVAC System
Control Board
AUX
G
Y1
Y2
O
HVAC System
Control Board
C
C
AUX
G
Y1
Y2
O
16
HVAC System Control Board
Cool
Heat
Fan Stage 1 AUX
C RC Stage 1
G Y1 AUX
C RC W1
AUX Device
HUM 1 HUM 2
Switch
C RC
Relay
24 VAC
Coil
C RC
AUX
AUX Device
RC
C AUX
RC
AUX
C