Johnson Controls GLAS Technical Bulletin page 17

Figure 14: Dual-Stage Heat
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
Furnace
Figure 15: Dual-Stage AC
Air Handler
re d
w e
P o ic e
c e e v
rn a n
X D R u
F u A U
R
C
AC Unit
Figure 16: Dual-Stage Heat and Traditional AC
Furnace
re d
w e
P o ic e
c e
e v n
rn a X D R u
F u
A U
R
C
AC Unit
GLAS Smart Thermostat Technical Bulletin
C AUX
RC G
W1 Y1
W2 Y2
RH O
C AUX
RC G
W1 Y1
W2 Y2
RH O
C
C
C AUX
RC G
W1 Y1
W2 Y2
RH O
17
HVAC System Control Board
Heat Heat
C R Stage 1 Stage 2
C R W1 W2
HVAC System Control Board
Cool Cool
Fan Stage 1 Stage 2
C RC
G Y1 Y2
RC
C
HVAC System Control Board
Cool
Heat Heat
Fan Stage 1
RC Stage 1 Stage 2
G Y1
RC W1 W2