37
RH
W2
W1
RC
C
O
Y2
Y1
G
AUX
HVAC System Control Board
W2
Heat
Stage 2
Heat
Stage 1
W1
RC
RC
C
C
Fan
G
Cool
Stage 1
Y1
C
R
Run
Fur
nac
e P
ow
ered
AU
X D
evic
e
AC Unit
Furnace
Dual-Stage Heat and Traditional AC
GLAS smart thermostat installation instructions -
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2018 Johnson Controls