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Wiring Chart
NOTE:
No thermostat
installation uses all of the wires
shown below. In most cases,
between 5 and 6 terminals are
wired. The remaining terminals
will not be used.
For all systems, the following terminals are wired according to
whether you have a single or dual transformer system as shown:
Single
Transformer
System
Dual
Transformer
System
WARNING
* FAILURE TO REMOVE PROVIDED JUMPER ON DUAL TRANSFORMER
INSTALLATIONS COULD CAUSE SEVERE DAMAGE TO HVAC SYSTEMS.
NOTE: This product requires 24V power supply via the C terminal to operate.
20
RH
24 VAC Hot
Jumper should remain installed
24 VAC – Heat
* REMOVE
PROVIDED JUMPER
O/B
G
W/E
W2
L
RC
24 VAC – Cool
* REMOVE
PROVIDED JUMPER
O/B
Y2
G
Y1
W/E
RC
W2
RH
L
C
C
24 VAC
System/Comfort
Common
Alert Diagnostics
24 VAC
System/Comfort
Common
Alert Diagnostics
Y2
Y1
RC
RH
C
L
G
Blower/
Fan
Blower/
Fan
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