I need to replace a manual stat that regulates the temp on a propane gas heater. There are only 2 wires going to the old stat, will this stat work?
1889336
It worked for me. There are instructions about where to put the 2 wires. It's just a relay closure. But, when I asked Honeywell about it I got an answer from someone who apparently was clueless about electronics. But, I used it on a system with ~ 15 volts to the relay and it was fine. That was about 6 or 7 years ago. Now there are "millivolt" thermostats. Some systems have a very low voltage sent to the relay. I don't know if the (thermo)stat you're asking about will be used in in such a system. If so, better check. My system was very old. But, basically, yes, only two wires are needed.
1406056
YES. Will work with low or high voltage 2 wire t stats. Real simple to install and program.
1632374
I experienced a power surge in my home which fried this thermostat so I just ordered the same model number thinking I could just plug it in and replace it. Come to find out it is a contractor thermostat and there is programming of some sort that has to be done so I ended up calling an HVAC person to get it working. Good luck.
828654
Unfortunately, I cannot answer that question. I installed that t-stat in a rental unit for a friend over 2 years ago and have not had any callbacks on it. Sorry I cannot help you. I believe it probably will automatically reset to cooling or heating as required due to temperature changes, I really cannot say that for sure!
1888225
I took the propane bits off before I even assembled the grill and connected it to my house's natural gas line. Works perfectly. They want you to buy a "conversion kit" which tells you to remove the bits and connect a hose (which you can get at home depot for a few bucks). YouTube it.
17098
Your propane heater must use electricity for this thermostat to work. It works great on my electric/kerosene heater.
1611153
Yes the t stat itself is the controller is wired at furnace so you can run however many wires needed
918901
You need 5 wires for this, but have options. First, I'd pull the thermostat and check the cable closely. There may be a 5th wire in the cable (not used on your old thermostat) that's been cut off or pushed back into the wall. If not, you can use the "Venstar Add-A-Wire 5 Wire to 4 Wire Adapter" to avoid having to replace the cable. You can download the manual to check color code and compatibility with your unit.
1280699
First thing to check is if you have 4 or 5 wires going to your old thermostat. If you only have 4, there are some work arounds, but you will most likely need to do a new run with 18/5 wire Southwire 64169622 5 Conductor 18/5 Thermostat Wire, 18-Gauge Solid Copper Class 2 Power-Limited Circuit Cable, 50-Feet, Brown
1261420
Won't be plug-and-play due to different connections. Could be adapted if they're the same type of thermosensor but this is 50/50 at best. Oregon Scientific does not disclose the necessary information online; perhaps their tech dept. would. If you've got a damaged unit just buy a new one; they're cheap.
982917
Mary, I am not an electrician. I also did not have corresponding yellow wires, but did have two wires that went into the unit I replaced. I just connected to the two wires going into old thermostat and I was good to go.
609030
If you want to use the automatic setting, you'll need to run wires for the outside temperature sensor. Most of the rest of the wires should be pretty similar though.
422676
There should be 5 terminals on the control module, which connect to the thermostat. They are marked like "Y, W, R, G, C" stand for Yellow, White, Red, Green, and Common. I disconnected the "R" wire and connected the switch in between. The two wires you talked about might be the one went to the out door unit (24 V). Double check it by following it where it goes to. You can also check your thermostat two see how many wires are used.
827456
Amazon cut your question off. Make sure you use the new baseplate w/new stat. They are not identical. Wiring is same.
161537
It depends on your existing thermostat. This unit requires 5 wires, with the 5th blue wire requiring 24V. If you have a modern 5 wire thermostat, it should work by hooking it up as you say. If you are currently hooked up to only 4 wires, I suggest getting an HVAC person to help out.
1172424
yup but you need to power it from another source if you only got two wire , depending on the furnace you may have 4 . i had the battery powered stats that did fine on a two wire but wifi needs more power so i got a transformer to run the stat . Elk TRG2440 24VAC, 40 VA AC Transformer with PTC Fuse my furnace had no point to put a third wire for common power "c" terminal so i went and wired stat to the aux supply plugged it in a remote outlet and ran another set wires to stat on wall all set and running fine if you get this set up the tech line at h-well can give you the terminals to mount your 2 new wires the ins booklet had no diagram to run a aux power source c n rc for the new power and remove jumper r n y for the furnace wire pair call to make sure very helpfull Coleman Cable 09632 CL2 Bulk Thermostat Cable, 18-Gauge 2-Conductor 100-Feet used
1618604
Yes - if the threads work on your new heater, it should be good. (Remember, some gas couplings have reverse threads.) If the threads don't match, you should be able to get an inexpensive adapter.