Thermostat replacement

daved

I have a Honeywell Chronotherm thermostat which I am planning to replace with a Honeywell TH8321. I need help in wiring.

Currently I have wires connected to G, W2, X, O, Y and R in the current Chronotherm. I understand the relevant connectors in the TH8321 are Y, G, O/B, R, C and AUX. Am I correct about the relevant TH8321 connectors and if so, which will be the corresponding terminals to connect?

I have a Lennox HeatPump with auxiliary gas heating.

Thanks.

Dave

narodsobe

Just to add to the fun, I've been perplexed over wiring as well. I am moving from a Robertshaw digital 9620 (it always loses the programs I set, and yes, I've changed the batteries). Heat pump.

Wiring is:

C
R
Y1
G
W2
O

Spouse bought a Honeywell TH6110 and I have the creeping suspicion that he bought the wrong one because the Robertshaw is 2h/2c and the Honeywell is 1h/1c.

Instead of getting into yet another marital scuffle owing to my pesky questions, can an independent authority confirm or deny my creeping suspicion???

Thank you!

Tamara