COMMUNITY FORUM

ACD

03:47AM | 03/06/03
Member Since: 10/15/02
359 lifetime posts
Bvhvac
I was wondering, I noticed in the instructions for my thermostat that there is a way to connect seperate heat and coll transformers to the stat, but how would you connect seperate blower units? Would you parallel the G & W wires to each unit, but power off the one your not using at the time?

ACD

11:42AM | 03/11/03
Member Since: 10/15/02
359 lifetime posts
Well the idea would be to run the AC seperate from the furnace. Right now the old AC/furnace is blocked off and shut down and the new furnace is connected. In the summer I would like to reverse that and block off and shut down the new furnace and run the old AC instead.

tinmantom

04:26PM | 03/11/03
Member Since: 03/01/03
19 lifetime posts
If you are using one unit for heat and one for ac, Remove the jumper between rc and rh and wire as if it were two seperate transformers, which it is.

best of luck

ACD

09:17AM | 03/12/03
Member Since: 10/15/02
359 lifetime posts
That part I figured out, but what about the blower, which would be the W & G wires for the old furnace?

tinmantom

04:38PM | 03/12/03
Member Since: 03/01/03
19 lifetime posts
the g terminal and thegreen wire are always fan. This must run from the ac unit. The w terminal and white wire are always heat they will go to the furnace. There must be a yellow wire that gets put to the y terminal and wired to the ac unit

ACD

08:33AM | 03/18/03
Member Since: 10/15/02
359 lifetime posts
OK, I'll try it out when we need the AC, Right now the new furnace is working great, house is finally comfortable and we are using less fuel.
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