Gas and Oil Home Heating Furnaces - Honeywell RTH8500D

Doityourself.com community forum was created to provide answers to all questions related to home improvement and home repair. Doityourself community can help you find information about how-to topics on small fixes to large remodeling projects. With comprehensive how-to content and expertly moderated community forums DoItYourself.com makes it easy to tackle even the most complex home improvement projects.



PDA

View Full Version : Honeywell RTH8500D

Mrudo
05-27-05, 10:24 AM
Pardon my ignorance...moving into my new townhouse in a few weeks. I know I have a gas furnace, but don't know the model, etc.
Want to know how hard it would be to replace the current old school manual thermstat with a nice new Honeywell 8500D?

Since it's not a heat pump I assume a lot less wires?

Any help is appreciated. I wish I had the furnace info etc with me but I won't for 2 more weeks.

Jay11J
05-28-05, 05:39 PM
If you have a singel stage heating/cooling system, then you will need 4 wires..

I have something close to this, I have the 2-stage heating on mine, and I used 6 wires.

I love mine alot! I would never go back to a regular t-stat.

I would suggest you upgrade to the one you can get from the Pro.. Yours w/ the "R" on RTH is not like the Pro.. The "TH" has lot more options you can set and control ..


When you wire it, MAKE SURE you turn off the power. Otherwise may short out something.