The wiring for your Honeywell thermostat depends on the functions of your heating and cooling system. You'll probably see a thermostat.
Table of contents
- How to Wire a Thermostat | Wiring Installation Instructions
- The Thermostat Wiring Color Code Guide
- Recommendations From My HVAC Company For a Home Thermostat
I can also prevent the compressor from operating when outdoor temperatures are very low - it doesn't accomplish much then anyway except burn power. All of these will save power, and were a part of the reason this unit was chosen. I have had this thermostat in use for several years now and have been very impressed with it. I highly recommend it for those wishing a high end thermostat.
Sign in or sign up and post using a HubPages Network account. Comments are not for promoting your articles or other sites. A heat pump requires at least 2 stages of heating in order to operate properly. The third stage is overkill to some degree, but is what is available in thermostats and can be used to isolate the heat strips for emergency heat. I wonder, too, if your Goodman "furnace" is actually a furnace at all, or whether it is simply an "air handler"?
A furnace would have a gas supply or some other form of producing heat and while that can be quite efficient to have both heat pump and furnace it is expensive and seldom done because of that. If it is an actual furnace the third stage is likely to be used to turn on the furnace while turning off the heat pump. Heat pumps are not efficient, and are nearly useless, at temperatures below about 25 degrees F outside temperature. It varies with the model and manufacturer, but they are all somewhere in that range. When the temperature falls, the thermostat will turn on the auxiliary heat strips, but without knowing what the outdoor temperature is will also run the compressor, resulting in electricity use for no heat gain.
The outdoor sensor fills that requirement, telling the thermostat when to turn off the heat pump while turning on the heat strips alone. Due to radical lifestyle changes additional families living in the house for periods of weeks to months I cannot know for certain if it has helped reduce costs, but I do have a strong feeling it has. The programmable feature also allows us to set times to raise or lower the indoor temperature, something that I like and saves energy as well. My suggestion, then, would be to go ahead and have the new stat installed if the labor cost isn't exorbitant.
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- Choosing, Installing and Wiring a Home Thermostat;
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Dan, thanks so much for this hub. If you have the time, can I please tap into your expertise on this thermostat thing? Our heating guy--whom we don't know very well yet--just did a routine maintenance on our Goodman furnace and heat pump both single stage.
I don't know the model of either at this point. Thermostats have come a long, long way from the days of a simple mercury bulb to turn the system on and off. The control possibilities, particularly for a more complex heating and cooling system, are almost limitless. Other product and company names shown may be trademarks of their respective owners. HubPages and Hubbers authors may earn revenue on this page based on affiliate relationships and advertisements with partners including Amazon, Google, and others. To provide a better website experience, dengarden.
How to Wire a Thermostat | Wiring Installation Instructions
The Thermostat Wiring Color Code Guide
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I typically recommend that the two thermostats be combined into one thermostat that will handle both systems if in fact you do have a central air conditioner system. With two different thermostats it is easy to have both systems running at the same time which is a waste of energy. You can pick up multiple bundled thermostat wire at your local hardware store. Ibought a new 18 seer 5 ton stright cool condensing unit and can not get it to run it has 2 stage heating and cooling can you help me thanks.
If it is a 5 ton straight cool air conditioner then it does not have heat. Straight cool means no heat, just cooling. If your thermostat does not have a Y1 and a Y2 then then you can stage it. It needs a two stage themostat. Probably best to call an HVAC contractor to wire this for you.
They can quickly identify what you have and wire it properly for control. I have a separate boiler and AC unit. I would like to install a new thermostat that is a WIFI unit. I can send photos of the boiler and the old thermostat wiring. The wire running to the thermostat seams to be from the AC unit not the boiler. How should I wire the new thermostat. It is also possible you only have one thermostat. It really depends on how the system was installed and wired. Probably best to call a professional to hook this up for you as it is difficult to say without looking at the system you have and how it was wired.
So, do I need to get a new one like that? Since I plan to replace it with the same type model.. Only thermostat like that that comes to mind is the old Honeywell T Honeywell does make a newer round digital thermostat. If it is the old round that is a mechanical thermostat you cannot purchase them any longer. Any products which contain mercury are illegal to sell now.
As far as the wires are concerned you will have to trace them out to see where they go. And it depends on what you have for equipment? Do you have an air conditioner with a gas furnace? Just a gas furnace? A boiler with an air conditioner? All these things are important to know before buying a new thermostat. With that combination you describe it is probably best to call a pro. I only have 2 wires from wall. Or do I need to test and find hot wire?
The only thing I can say is to make sure you check to make sure you have it set to heat and temperature set point is turned up above the room temperature. R and W are the correct terminals. If it is control voltage a typical home thermostat will work where you wire to R and W on the thermostat. If it is line voltage you need to purchase a line voltage thermostat and follow the instructions.
Make sure you kill the power to the system before doing any wiring and if in doubt call a professional HVAC contractor to do it for you. I have a split system hydroair for heat, compressor to air hander for AC. So, I have two transformers, one in the air handler, one at the boiler. To make a C wire should I use the transformer in the air handler?
We have an article here concerning this matter and you can find it here — 1 or 2 transformers. The wire used for heat is typically going to be different for the wire used for cooling. The common should originate from the same source transformer where the hot wire originates from. So if it comes from the boiler or furnace whatever heating system you have then the common should come from there also. If the hot wires comes from the cooling system then you should use that common.
The current control is a single push-button switch with 2 indicator lights. The controller has 4 wires going to it: Likewise, the push-button switch has 4 wires: Is there any way to do this conversion? Or are there thermostats that can control the 3-position gas valve? There are three stage heating thermostats you can purchase that have terminals W1, W2, and W3. Of course W1 would be low, W2 would be medium, and W3 would be high. These different terminals have differential temperature set points.
W1 would kick on when the temperature need to turn to satisfy the set point. If the temperature keeps falling below the set point then W2 would kick on and the same between W2 and W3. However, I do not know if this would be proper for your situation because of how the 3 stage thermostat will work. If you have a phone number for the manufacturer of the furnace I would call them and ask them about it. It is very possible they have a solution for you. As a last resort you could call a professional. The problem with the staging thermostat is that W1 would still be energized when W2 calls and your controller may not allow that.
The same with W3. If the thermostat calls on W3 then you would have all three energized and that may cause problems with the furnace controller. This is a gravity furnace that this set up will not work. I can send you a wiring diagram of how this is. I have an old wiring diagram of a push button set up. Make sure the firebox is not cracked and the flue vent is venting properly before you start putting this type of money into this very old furnace. Instead it has the terminals vertically, you push the wire in and then tighten a screw.
This requires loosening and tightening a tiny screw.
- Thermostat Wiring for Dummies?
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The problem is for me — the 6 wires come from the wall, they are relatively stiff. They are pulled through a hole in the backplate, then each is supposed to be inserted horizontally into its respective terminal. In one of the videos they push the wire into the receptable with one finger, and tighten easily. IMHO even if I get them in securely, it looks like when someone uses the wrong size junction box and the wires are cramped. You strip the insulation off the wire then stick the stripped portion of the wire through the little hole and then bend it over.
It makes a perfect wire loop to go under the screws and therefore a more secure termination of the wire. Does the thermostat G terminal control the furnace fan in both electric furnaces and gas furnaces? If not, what tells the air handler fan to run in a split system with gas heat? Modern furnaces use a control board that usually is based on a time increment for both the starting and stopping of the fan when in heat mode while older furnaces used a mechanical type of relay call the fan limit control that control the fan based on the temperature in the heat exchanger.
See this article for an explanation — https: With electric furnaces the heat is provided by heating elements in the system and it is necessary to have the fan running when the elements are energized to dissipate the heat as the elements are producing the heat.
Recommendations From My HVAC Company For a Home Thermostat
The delay can be either a special relay, a sequencer, or through the electronics in the control board. What I would like you to know is the information detailed below is based on the industry standard, yet not all thermostats will work this way simply because letters and numbers are used as well as color. So, this is what you might expect to see in terms of colored wires and what they mean:. AND it has been recorded by a professional in the industry. Wiring Set-Up Explained What I would like you to know is the information detailed below is based on the industry standard, yet not all thermostats will work this way simply because letters and numbers are used as well as color.