Installation
Installation
Wiring terminal
Wire specifications
Installation notes
•Ensure power at the HVAC equipment is off.
•Loosen screw terminals, insert stripped wire and
•Push the excess wire back into the opening and plug the wall opening to prevent drafts.
RC – 24 VAC supply cooling* R – 24 VAC supply heating* W – 1st stage heat / auxiliary
Y – 1st stage cooling / compressor G – Fan
C – Common (optional when powered by batteries) S1 & S2 – outdoor temperature sensor (optional) O/B – Reversing valve
L – System fault indicator
W2 – 2nd stage heat / auxiliary
Y2 – 2nd stage cooling / compressor
*Jumper between RC & R is used in single transformer systems (see wiring diagrams).
Wiring – single Transformer (use Jumper Wire) for HEAT/COOL System
TRANSFORMER | JUMPER | 1st HEATING 1st COOLING FAN | OUTDOOR TEMP SENSOR | USED | USED | 2nd HEATING 2nd COOLING |
|
|
|
| NOT | NOT |
|
Wiring – TWO TransformerS (REMOVE Jumper Wire) for HEAT/COOL System
TRANSFORMER
HEATING
COOLING TRANSFORMER | 1st HEATING 1st COOLING FAN | OUTDOOR TEMP SENSOR | 2nd HEATING 2nd COOLING |
|
| NOT USED | NOT USED |
RC R | W | Y | G | C | S1 S2 O/B L | W2 Y2 |
RC R W Y G C S1 S2 O/B L W2 Y2
RC R W Y G C S1 S2 O/B L W2 Y2
6 | 7 |
