if your existing thermostat is
marked...
RH / R / VR / 4
RC / VC
Y / C* / M / O
W / H / B
G / F
Y1
| label the wire with this |
| sticker: |
24 Volt | RH |
| |
| RH |
24 Volt cool | RC |
| |
| RC |
air conditioning compressor |
|
| Y/0 |
| Y/0 |
heating | W/B |
| |
| W/B |
fan | G |
| |
| G |
heat pump compressor |
|
| Y1 |
| Y1 |
10
