Installing a new line voltage thermostat
#1
06-23-15, 12:38 PM
Installing a new line voltage thermostat
So I'm trying to install a new thermostat in my apartment and I don't know how to wire it. Everything I read doesn't match with what I see. I hope someone could help me. I have 4 wires: black, brown, red and blue. The thermostat has: RH, RC, W, Y and G. I don't know which colour goes where. Can anyone help?
#5
06-23-15, 02:40 PM
That might be a line voltage stat. What's the model number of the old stat? Can't really see the diagram, maybe a close up pic would help.
#6
06-23-15, 05:40 PM
Forum Topic Moderator
I recommend the Honeywell SuitePro line of thermostats to replace that high voltage thermostat.
Last edited by Houston204; 06-23-15 at 07:04 PM.
#7
06-23-15, 09:46 PM
Houston 204, big thanks for the info on that. Tried searching however and I can't find a distributor up here (Toronto/Mississauga) and Honeywell's site just has product info for it. Are there any equivalents to that one could find easier by chance?
Thanks again.
Thanks again.
#8
06-23-15, 09:56 PM
Group Moderator
While waiting for Houston.... try the locator.
https://customer.honeywell.com/en-US...hCriteria.aspx
I think Amazon sells these stats too.
https://customer.honeywell.com/en-US...hCriteria.aspx
I think Amazon sells these stats too.
#11
06-23-15, 10:10 PM
Group Moderator
No.... that thermostat won't work. You need one specifically for a fan/coil system and line voltage.
#12
06-23-15, 10:27 PM
Gotta thank both you and Houston. Houston for the thermostat and you for the Honeywell search. Found a distributor up here so very much appreciated. Will update tomorrow. Thanks again 
#13
06-24-15, 12:38 PM
Took the advice and grabbed the Honeywell SuitePro TB6575A1000, the wires were an exact match in terms of color however after wiring them up as pictured below, no power to the unit once plugged in. Reset the breakers, tested, nothing.
Was curious what I should try? I also uploaded what should hopefully be a much clearer diagram from the unit itself.
Was curious what I should try? I also uploaded what should hopefully be a much clearer diagram from the unit itself.
#14
06-24-15, 01:06 PM
Was also curious if despite the manual saying 2 or 4 pole and 5 relay, would I need the "B" instead as it only has 2 poles and 4 relays which would match the 4 wires properly?
Or am I overthinking this?
Or am I overthinking this?
