3
Connecting Your Wires
Wiring Terminations for model PRS6320
Terminal
Function
Rc
Input
Rh
Input
G
Output
W1 / E / W3
Output
W2
Output
O / B / V3
Output
Y1
Output
Y2
Output
L
Input
C
Input
S1
Input
S2
(continued)
Description
24 Volt AC Cooling Transformer
(Dual Transformer Systems Only)
Power Connection (24 Volt AC Heating
Transformer or Millivolt Power Source)
Fan Control
(W1) 1st Stage Conventional Heat,
(E) Emergency Heat,
(W3) 3rd Stage Auxiliary Heat
2nd Stage Conventional Heat
(O) Cool Active Reversing Valve
(B) Heat Active Reversing Valve
(V3) Zone Valve Power Close
1st Stage Compressor
2nd Stage Compressor
System Malfunction Indicator
24 Volt AC Transformer Common
Optional Remote Sensor (indoor or outdoor)
3
Installer Manual