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STEP11
Unscrew the mounting plate of your old thermostat to remove it from the wall.
WARNING:
Be careful, as some thermostat may contain mercury.
Recycle your old thermostat safely with your local hazardous waste facility.
5150
！
C
RC
RH
W1
W2
AC+
AC-
RT+
RT-
S
G
Y1
Y2
O/B
STEP12
First, connect these 4 wires as show: RC,C,S,W1. Then connect any remaining
wires to their corresponding terminal.
TIPS:
Press the terminal block levers to insert the wires more easily.
R
C
C
S
W
1
W
/
RC RH G Y W C
R
C
W1
C
W
1
S
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