Our heating system is just a basic oil burner/steam heat system and our thermostat literally connects with two wires. Can we use this thermostat?
1290662
This is meant for an air system, heating& cooling, and most of the capabilities would be lost. It is also on the higher end of pricing. Your hot water/steam system would be better suited to a heating only thermostat, with setback capabilities, costing from $50 to $75.
1290663
No, this thermostat requires constant power - you will need a 24V "common" wire connected to the thermostat's "C" terminal. You would either need to run additional wires from your furnace to this thermostat, or there is an adapter you may be able to install into your current setup, but I'm not sure if you can make it work with only two wires. Either way you will need to modify your current configuration to include the common wire. See http://www.amazon.com/Venstar-Add-A-Wire-Wire-Adapter/dp/B0013LVDQA
1290664
No, this thermostat requires constant power - you will need a 24V "common" wire connected to the thermostat's "C" terminal. You would either need to run additional wires from your furnace to this thermostat, or there is an adapter you may be able to install into your current setup, but I'm not sure if you can make it work with only two wires. Either way you will need to modify your current configuration to include the common wire. See Venstar ACC0410 Add-A-Wire for all 24VAC Thermostats
2052756
I don't see why not. However, you will need a 240 volt circuit and have to wire that heater for 240 volt operation. The thermostat requires this voltage.
1567993
No, not a problem at all. The thermostat has inputs (places for wires) for heat, fan, AC, heat pumps and sensors. See the install manual here: http://www.venstar.com/Support/Manuals/T5800ManualRev5b.pdf
999073
Answer is to be found in other answers. However, the electronic thermostat needs to be energized all of the time (not the case for a "manual" thermostat) and so two of the wires going to the electronic thermostat need to be connected to 240 VAC. The other two wires are to be connected to the heating element. Thus you must determine/separate from the wires available two wires that run to the circuit breaker (supplying 240 VAC) and two wires that go to the heating element. Sometimes, two heating elements are involved. In every case that I have seen, you will see the mentioned pairs of wires entering through separate holes in the back of the box. When wired as intended, one result of using the new electronic thermostat is that no voltage will be present at the heating element when it is off - not now the case. Invest in a very low cost multimeter to use to measure voltage and resistance.
754847
It depends on the capacity of the thermostat. If you have 3 heaters of 1200 watts each, and your thermostat is rated for only 3000 watts, you are only able to run 2 together.
344149
If your air and heating runs off your old thermostat then this should have the same wiring. I did go with this to replace a Coleman, so can't be much help.
342806
The thermostat has the following:HeatCoolAutomaticIt will also work with dual fuel heat pumps, if you have the correct controls on your furnace.
1264513
This unit will accommodate 4 wires, Red(power) White (heat) Yellow(cool) Green (Fan). It will function with Just red & white(for heat) or red & yellow(for cooling)If by 2 wire you mean line voltage(120v or 240v) the emphatic answer is NO!!! It is a low voltage thermostat. (24v AC) Hope this answers your inquiry. Darrel
1733213
From what I see online, I would say no. Thermostat must be Red Link Network enabled.
652884
Some have answered as if this was a dumb question. Its not. If your furnace or boiler does not provide a 24 volt lead you could use an external power supply to power this thermostat. If you have extra conductors available to use in your thermostat wire, you could plug it into the service plug next to your boiler or furnace. Then by connecting the external power supply to the tstat wire, you could power the tstat. If you don't have any unused conductors in your tstat wire, you could power it by feeding it power at the thermostat. While this is do-able. It would be ugly because there would be visible wires leading from the outlet where the power supply is plugged, into the back of the tstat. Some have answered as if this was a dumb question. Its not. If your furnace or boiler does not provide a 24 volt lead you could use an external power supply to power this thermostat. If you have extra conductors available to use in your thermostat wire, you could plug it into the service plug next to your boiler or furnace. Then by connecting the external power supply to the tstat wire, you could power the tstat. If you don't have any unused conductors in your tstat wire, you could power it by feeding it power at the thermostat. While this is do-able. It would be... » Read More Some have answered as if this was a dumb question. Its not. If your furnace or boiler does not provide a 24 volt lead you could use an external power supply to power this thermostat. If you have extra conductors available to use in your thermostat wire, you could plug it into the service plug next to your boiler or furnace. Then by connecting the external power supply to the tstat wire, you could power the tstat. If you don't have any unused conductors in your tstat wire, you could power it by feeding it power at the thermostat. While this is do-able. It would be ugly because there would be visible wires leading from the outlet where the power supply is plugged, into the back of the tstat. « Show Less
920389
No. You just have to make sure the connectors to your existing thermostat are compatible with this one. You can look at the one you have now and see if it is not by the online compatibility. I did not. And mine was not compatible.
515361
Yes .. You can add a thermostat.. I actually installed a heat only wall mount thermostat .. You will have to install a control transformer also... Use the thermostat to break your primary voltage.
1066007
You must supply power to the thermostat. In my case, more wires ran between the furnace and the thermostat than were actually used on either end. I just had to figure out where to connect one of the extra wires on the furnace side, to supply the power to the thermostat.
1260209
If you have two thermostats you should buy two combo sets. You can set a code to control each thermostat and unit. I have more than one and it works fine.
922371
Doubt it. Thermostats are low voltage. Cost would be high but you can use a step down transformer. In real life - just turn the stupid thing on or off!
2017766
I think this can replace your thermostat. You didn't say if the system was electric or gas (hot water) heating but the heavy current is probably being handled by a system relay. You can download the manual and installation document from Honeywell for additional information, and/or check with a heating contractor to be sure.
1611154
I believe so, check with your installer because this unit comes with two components,1: is the thermostat itself, 2: is a unit that connects at the furnace or AC unit.