Johnson Controls GLAS Technical Bulletin

GLAS Smart Thermostat Technical Bulletin
18
RH
W2
W1
RC
C
O
Y2
Y1
G
AUX
HVAC System Control Board
Heat
Stage 2
Heat
Stage 1RCCFan
Cool
Stage 2
Cool
Stage 1
W2W1RCCGY2Y1
C
R
Run
Furnace Powered
AUX Device
AC Unit
Furnace
Figure 17: Dual-Stage Heat and Dual-Stage AC
RH
W2
W1
RC
C
O
Y2
Y1
G
AUX
HVAC System Control Board
Stage 1 Stage 2GRCC
Y1GRC Y2
Reversing
Valve
OC
Compressor Commands
Heat/Cool
C
RRun
Furnace Powered
AUX Device
Furnace
Heat Pump
Figure 18: Dual-Stage Heat Pump
RH
W2
W1
RC
C
O
Y2
Y1
G
AUX
Aux Heat Commands
HVAC System Control Board
Fan
Heat
Stage 1RCCStage 1
Reversing
ValveStage 2
GW1RCCY1OY2
C
R
Run
Furnace Powered
AUX Device
Furnace
Heat Pump
Compressor Commands
Heat/Cool
Figure 19: Dual-Stage Heat Pump with Auxiliary Heat

Johnson Controls GLAS Specifications

General

Brand	Johnson Controls
Model	GLAS
Category	Thermostat
Language	English