Prestige™ Installation Guide
Wiring guide
See detailed wiring guides for specific system types on following pages.
Conventional Terminal Letters: | Heat Pump Terminal Letters: | ||
C | Common wire from secondary side of | C | Common wire from secondary side of |
| cooling transformer. |
| cooling system transformer. |
Rc | Cooling power. Connect to secondary | Rc | Cooling power. Connect to secondary |
| side of cooling system transformer. |
| side of cooling system transformer. |
R | Heating power. Connect to secondary | R | Heating power. Connect to secondary |
| side of heating system transformer. |
| side of heating system transformer. |
W | Heat relay (stage 1). | O/B Changeover valve for heat pumps. | |
W2 | Heat relay (stage 2). | Aux/E Auxiliary/Emergency heat relay. | |
Y | Compressor contactor (stage 1). | Y | Compressor contactor (stage 1). |
Y2 | Compressor contactor (stage 2). | Y2 | Compressor contactor (stage 2). |
G | Fan relay. | G | Fan relay. |
K | THP9054 connection (see note below) | L | Heat pump reset (powered continuously |
|
|
| when System is set to Em Heat; system |
|
|
| monitor when set to Heat, Cool or Off). |
|
| K | THP9054 connection (see note below) |
Note: Do not connect wires to terminals marked “Not Used.”
Note: Use the K terminal in place of the Y and G terminals to provide full fan and compressor control though a single wire. The K terminal must be connected to the THP9045 Wiresaver module (see page 14). The K terminal can not be used in
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