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Old 01-01-2010, 06:08 PM   #1
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Programmable Thermostat on Pellet Stove


I have a Quadrafire Castille pellet stove that is controllable by a basic thermostat they provided. It doesn't provide any voltage to the stove; it's just an on/off relay. I want to replace it with a basic programmable thermostat and I've bought a Honeywell RTH221 for that purpose. However, no schematic is provided (including online) and the instructions only lead me through connecting previous wires from an old unit. I don't really have that since this is a new install, so can anyone tell me which connections in the Honeywell will provide the basic relay function?

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Old 12-07-2010, 10:46 AM   #2
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Programmable Thermostat on Pellet Stove


Quote:
Originally Posted by WallyB View Post
I have a Quadrafire Castille pellet stove that is controllable by a basic thermostat they provided. It doesn't provide any voltage to the stove; it's just an on/off relay. I want to replace it with a basic programmable thermostat and I've bought a Honeywell RTH221 for that purpose. However, no schematic is provided (including online) and the instructions only lead me through connecting previous wires from an old unit. I don't really have that since this is a new install, so can anyone tell me which connections in the Honeywell will provide the basic relay function?
Red Wire > RC (Jumped to RH)
Yellow Wire > Y
Green Wire > G
White Wire > W
Orange Wire > O
Blue Wire > B
There are also a brown wire and a black wire not used coming out of the wall.

The new honeywell has the following connections:

Conventional --- HP
C --- C
G --- G
Y --- Y
W --- O/B
RC (jumped to R) --- RC (jumped to R)
R --- R
W2 --- AUX
Y2 --- E
--- L


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