Here, Im an HVAC Controls Tech. This is a complete diagram for different systems. Ive added Gas, Electric furnaces and heat pumps. I can add water source HP's if desired.
(R) Red - Power
(W1) White- Heat
(W2) Blue- Second Stage Heat
(Y1) Yellow First State Compressor
(Y2) Jumpered (Board Controls Second Stage Compressor)
(O) Orange- Reversing Valve (Heat Pump Only)
(B or X) Depeneding on Manufacture will be Common (Heat Pump Only)
(Brown and Pink) Outdoor Stat (Heat Pump Only)
(G) Green - Blower Relay
Aux Heat for heat pumps no longer is hooked up, the fuel master does it for the unit.
I could add a lot more, but start with these
Last edited by klein man; 04/18/09 03:40 PM.