Multiple Units - Hydronic Only
NOTE: Low voltage wires MUST never enter any line voltage enclosure unless rate for line voltage.
|
Function |
PSC Letter Code |
Variable Speed Letter Code |
|---|---|---|
|
Low Voltage Hot |
R |
R |
|
Low Voltage Common (grounded) |
C |
C |
|
Compressor/Stage 1 Heat Call |
Y |
Y1 |
|
Compressor/Stage 2 Heat Call |
- |
Y2 |
|
Auxiliary Heat Call |
W |
W/AUX |
|
Compressor Output Stage 1 |
Y2 |
Y12 |
|
Compressor Output Stage 2 |
- |
Y22 |
|
Fan Call |
G |
G |
|
Reversing Valve Input (always energize for cooling) |
O |
O |
|
Reversing Valve Output (can be energized for heating or cooling, see C006) |
O2 |
O2 |
|
Hydronic Heat |
H |
H/E |
|
Outdoor Temperature Sensor |
OS & SC |
Outdoor |
|
Water Temperature Sensor |
|
Water |
|
Duct Temperature Sensor |
DS & SC |
Air |