willpope Posted November 3, 2007 Report Share Posted November 3, 2007 I'm replacing an old mercury thermostat with a new ritetemp thermostat 8050C...there are a dozen connector terminals, and awful directions...I have a red, white a green wire coming out of the wall, and need to connect each (actually the green ground was never connected to anything. Anyone know where the red and white should go? (out of a choice of C, W2, RC, O, B, RH, W, Y, G, A?) Quote Link to comment Share on other sites More sharing options...
hausdok Posted November 3, 2007 Report Share Posted November 3, 2007 Your on the wrong forum, Will. Go to http://www.heatinghelp.com OT - OF!!! M. Quote Link to comment Share on other sites More sharing options...
Neal Lewis Posted November 3, 2007 Report Share Posted November 3, 2007 I cringe when I see a thermostat like the RiteTemp with the silly stylus. I only have the round honeywell T87's in my house (old reliable). Why bother with a programmable, when the wife will only turn the heat up to 74 and I will turn it down to 68 when she's not looking?? Quote Link to comment Share on other sites More sharing options...
Terence McCann Posted November 3, 2007 Report Share Posted November 3, 2007 Originally posted by willpope I'm replacing an old mercury thermostat with a new ritetemp thermostat 8050C...there are a dozen connector terminals, and awful directions...I have a red, white a green wire coming out of the wall, and need to connect each (actually the green ground was never connected to anything. Anyone know where the red and white should go? (out of a choice of C, W2, RC, O, B, RH, W, Y, G, A?) First off the new ritetemp t/stat is a heat pump t/stat. You have a boiler system - it is single stage of heat only. I'd take the thermostat back to where you got it and buy an electronic thermostat for a conventional system, not a heat pump. IF the person that wired it originally did it correctly then your Red wire goes to R on the thermostat, the W wire goes to the W terminal and the G wire goes to the G terminal. R = 24V Hot W = Heat G = FAN This is for a conventional forced hot air system. With the boiler system you obviously do not have a fan so, I assume that the installer ran a three color t/stat wire but the G wire would go to the C terminal of the thermostat. C is the common of the 24V transformer. When you took the old thermostat apart did you note which terminals the wires went to? Was the G wire even hooked up? The old one may have just connected the R and W wire. I'd would think that there were just two wires connected to the old stat. Hope this helps. Quote Link to comment Share on other sites More sharing options...
fuji0010 Posted April 28, 2009 Report Share Posted April 28, 2009 Some forced air zoned systems master controllers use both B and O for changing ... B or O. Be sure it is a gas forced air zoned system before connecting both O and B. ... Any zone's thermostat can turn on the boiler. Rotary Solenoid _________________ Programmable Thermostats Quote Link to comment Share on other sites More sharing options...
Erby Posted April 28, 2009 Report Share Posted April 28, 2009 Neal, you need a false thermostat for her to play with. Put the real one somewhere she won't notice it and let her play with the false thermostat all she wants. Quote Link to comment Share on other sites More sharing options...
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