I am installing a small heat pump to supplement my residential oil forced air system. The heat pump is a Climatemaster model GCV018BGC30CFTS. It is typically used in commerical applications but I have it up and running using a single stage heat pump t-stat. I will eventually direct the heat into my current duct work.
http://www.climatemaster.com/index/comm_gc_features
I would like to install a HP t-stat that first calls on the HP to provide heat. If the HP cannot keep up, it then calls on the auxiliary heat (my oil forced air furnace) and shuts down the HP. The heat pump will only be used for heating. My current t-stat is conventional and is using a simple 2-wire conductor that goes to a Honeywell controller (model# R8184) on the oil furnace.
I am considering a Hunter 2-stage Programmable Heat Pump Thermostat Model #44760.
http://www.medwing.com/ssi/pdf/hunter/44760-Owners-Manual.pdf
My questions...Does anyone see anything wrong so far? I am puzzled as to how to wire the thermostat with the heat pump and oil furnace. I am paricularly confused about the wiring for the W2 terminal(s). The t-stat has 9 terminals: R, Y1, W2, E, O, B, G, L and C. The ClimateMaster HP also has 9 terminals: R, Y, W, O, G, C, AL1, AL2, A.
I think R to R (24Vac Hot), Y1 to Y (compressor), W2 to ? (Aux Heat), O to O (reversing valve), G to G (fan), C to C (24 Vac common), L to AL1 (Fault LED).
Does the W2 conductor from the Tstat go directly to the oil furnace? Do I need a second conductor to the oil furnace for power?
Bst Rgds,
http://www.climatemaster.com/index/comm_gc_features
I would like to install a HP t-stat that first calls on the HP to provide heat. If the HP cannot keep up, it then calls on the auxiliary heat (my oil forced air furnace) and shuts down the HP. The heat pump will only be used for heating. My current t-stat is conventional and is using a simple 2-wire conductor that goes to a Honeywell controller (model# R8184) on the oil furnace.
I am considering a Hunter 2-stage Programmable Heat Pump Thermostat Model #44760.
http://www.medwing.com/ssi/pdf/hunter/44760-Owners-Manual.pdf
My questions...Does anyone see anything wrong so far? I am puzzled as to how to wire the thermostat with the heat pump and oil furnace. I am paricularly confused about the wiring for the W2 terminal(s). The t-stat has 9 terminals: R, Y1, W2, E, O, B, G, L and C. The ClimateMaster HP also has 9 terminals: R, Y, W, O, G, C, AL1, AL2, A.
I think R to R (24Vac Hot), Y1 to Y (compressor), W2 to ? (Aux Heat), O to O (reversing valve), G to G (fan), C to C (24 Vac common), L to AL1 (Fault LED).
Does the W2 conductor from the Tstat go directly to the oil furnace? Do I need a second conductor to the oil furnace for power?
Bst Rgds,