No Thermostat - http://www.hvacmechanic.com/ Forums


Original message

gstuck

72.204.83.219

"No Thermostat" , posted Sat 1 Nov 13:59user profileedit/delete messagepost reply


Buying an home and the past owner took the theromstat (cut it off the wall) wires not marked. Plan to install a hunter 44860 on a Rheem RRKA unit. How do I determine what wires to mark correctly for connections. 4 wires are sticking out the hole R-Y-G-W.

 


Replies:

Jojo98

68.60.207.210

"Jojo98" , posted Sat 1 Nov 14:22:user profileedit/delete messagepost reply


Usual configuration:
R to 24vac
Y to Cooling
G to Fan
W is either going to be Heating or 24vac Common
If this is a A/C only, and the the house is heated from an other source then hook up white wire to common or "C" If the unit heats the house, then hook up wire to W1
If you terminate the white wire to W1, the t-stat will need to be powered by batteries.

[this message was edited by Jojo98 on Sat 1 Nov 14:27]

 

 

gstuck

72.204.83.219

"Re(1):Jojo98" , posted Sat 1 Nov 14:38user profileedit/delete messagepost reply


R will go on RC/R with a jumper to RH
Y wil go on Y1/Y2
G wil go on G (duh :))
W wil go on W1/W2

Thanks for the feed back.. :)