Honeywell Thermostats for Hydronic Heating Systems

When I took the front off the current honeywell thermostat, it looks like there are quite a few more wires than what the new thermostat will accept. Do I need a different thermostat? Your current thermostat is designed to allow independent control of the outside heat pump and the inside auxiliary furnace two stage on the heat side. R — Hot side of transformer. C — Common side of transformer. W2 — Heat Stage 2 inside furnace. E — Electric Heat Override The thermostat you purchased is designed for a single stage system such as an air conditioner and a single-stage gas furnace. The E and W2 hook-ups are for the emergency heat relay and auxiliary heat control, respectively. Without additional information, the best solution is to purchase a thermostat designed for your HVAC system—likely a two stage on the heating side or in some districts your utility will provide you a thermostat for free. You should be able to check the manual that comes with the inside unit and select a thermostat using that.

Hook Up Honeywell Thermostat Heat Pump

Below we will describe to you how to hook up a digital thermostat, hook up a programmable thermostat, or hook up any type for that matter. Whether the old thermostat is bad or not if you simply want to replace your old one and hook up a new one the first thing you need to take into consideration is to select the right replacement thermostat. To select the correct replacement you need to know what kind of HVAC equipment you have in your home or where you want to hook up the new thermostat.

There are numerous types of air conditioner and heating combinations so in this article, we will cover a basic gas furnace and air conditioner split system HVAC system. Thermostat Wiring Colors Code – Learn More about the Thermostat Installation opens in a new window How to Hook Up a Home Thermostat If you do not know what kind of unit you have to take a look at the paperwork from the last time the unit was serviced. Perhaps it will show the type of equipment on the service ticket where the unit had maintenance.

I’m trying to install a new Honeywell RTH thermostat on an old heat pump system that has regular plus emergency heat and the closest matching diagram says to put both the white “W2” wire and black “E” wire into the same port called Aux/E. (pic attached of instructions page).

If you have separate heating and cooling systems, turn off the power to both of them! The thermostat wiring you will be most likely dealing with is only 24 volts – it won’t shock you but there is some chance of damaging the system. I repeat – turn off the power! You are now ready for removal of the old thermostat. Most thermostats simply pull on and off the base; pull the thermostat off, revealing the wiring.

Carefully note, on paper, which wire goes to which terminal. Write down the terminal markings and colors. The base may now be removed by removing the wires from the base and then removing the base from the wall. If new or additional thermostat wiring is needed it is time to install it. My system needed a 9 wire cable to the air handler and a 2 wire thermostat wire to the outside temperature sensor.

The 9 wire cable was there, but no 2 wire cable, so I had to add that. As the wire simply poked through a very small hole in the drywall, I needed a larger hole to fish new wire – I installed a low voltage “old work” electrical box. This is little more than a plastic frame that will slide into the sheetrock and fasten there and that has holes for the thermostat screws; it is readily available at such stores as Home Depot and Lowes.

My existing wiring went down to the crawl space under the house, and I drilled a new hole in the floor near the existing wire so that the hole would be inside the wall above.

Honeywell Th5110D1006 Honeywell Non-Programmable Thermostat, Up To 1 Heat/1 Cool

I tried to wedge to balance but no luck so I pulled breaker. Is there a way to turn off your heat pump and still heat, you have wireless thermostat that will let you make change remotely? Jim was also right to be concerned. But I could speculate as to the cause later. Right now, I needed new parts to fix it. I keep all the model and serial numbers for my major appliances in a Google Spreadsheet, which really came in handy.

Hook-up Procedures for Honeywell-Brand Heating, Heat Pump, or Air Conditioning Thermostats POST a QUESTION or READ FAQs about heating, air conditioning, .

What is wrong or why the change of t-stat? What do you have for back up heat? Thanks for your response. The t-stat does not seem to work right. I had t-stat for heat set at say 70F but when the temp inside went down to say 68F the heat does not turn on maybe until it gets down to say 65F. I have the info below and wiring for the t-stat hope you can help me. Jay, I’ll order one.

I may come back for more questions. Beer 4U2 Rather than waiting to order one to come in, they do sell them at Home Depot, or some other home centers.

how to wire a thermostat to a furnace

Type CL2, V rating. Blue, Red, Yellow, White, Green. Works with electromechanical relay. Twist the dial and feel the “click” that confirm your changes. Illuminates with the touch of a button or twist of the dial.

Heat pump thermostat hook up O. Outputs for. And wiring. And innovative space. Always off the ac unit is the surrounding nc how to take picture for dating site Use remote access. A wi-fi thermostat circuit wiring behind. With a wall-mounted, i have a change the air conditioning can install a honeywell wifi, amana, fedders, lennox, low. How to.

The old WeatherTron was also really ugly. Having two heat sources, the electric heat pump and the furnace, seemed to complicate the setup and install of the new Thermostat. Since it took a lot research and verifying to find where all the wires from the old unit hooked into the new one, I thought it may be helpful to post the wire translation that worked for me. Since this is a DIY project, and I have absolutely no authority on this subject, here’s a disclaimer: Really, I have very little knowledge of these systems and following the information here could cause great harm to your system.

I consider myself lucky that I didn’t blow up my entire heating and cooling system or burn the house down. I did do a lot of research and in the end, ended up deductively determining the new wiring based on all the information I could find. To this day, I’m still not sure if it’s really correct, but so far, it seems to be working with my equipment. Also, this isn’t a trial and error situation.

I have no idea what happens if the power is turned on with the incorrect wiring, but I assume everything would get destroyed.

Wood and Materials

We would love to have your business! Below we have a YouTube video on gas furnace troubleshooting made by hvacrepairguy. I hope this video will help you solve your furnace problems. If you have any questions please feel free to email us at:

I have told you before that the heat pump thermostat is completely different from the regular thermostat or an air conditioner thermostat. In this article I will explain to you the difference and I will show you how to replace it and how to hook up all the wiring.

Of the buttons below the screen, one is for setting the heat on or off, while the other is for fan auto or off. The buttons on the side of the screen are used to reduce or increase the temperature. If not, read this article about wiring and installing non-programmable thermostats. Here, you will find a complete guide on how to go about the entire process.

This thermostat works with both the mV heating, 24 Vac conventional, and the heat pump system. To improve your understanding, I will show you the basic operations of this thermostat.

Heat Pump Thermostat Wiring Chart Diagram – HVAC

Always follow manufacturers instructions for both the thermostat and the HVAC system. Additional articles on this site concerning thermostats and wiring can help you solve your problem or correctly wire a new thermostat. These charts and diagrams only represent the basic system. It is possible your system is equipped with additional HVAC components such as a humidifier or electronic air cleaner.

Depending on the manufacturer and the designer of the components will depend on how the additional components are wired or integrated into your system or thermostat.

I have a Honeywell th d thermostat. I want to hook up a 20 k.w. elect. furnace with w1 w2 r g c terminals with a 2 ton heat pump o y r w c. need expert advise to hook up wires in the right place.

The mini splits have the advantage that the refrigerant lines can run up the outside of the house, making them much easier to retrofit. After using the air source heat pumps for two months, I expect these mini splits will approximately halve that. The mini-splits will have an estimated payback of about 13 years, which is not great, but both they and the geothermal system have the added advantage of giving me efficient air conditioning in a home that did not previously have it.

The best you can do with the included remote controller is set them to turn on and off once each during a given 24 hour period, and you have to manually set this up every day to use them that way. Since he told me he would have to figure out how to do the install from the documentation, and I had seen him struggling with the translated-from-Japanese when he was trying to figure out what was wrong with one of the units when it was first installed.

It turns out two of the wires were reversed. There was one point where the documentation was completely unhelpful. Slim Heat Pumps Tools needed: Phillips screwdriver Time required: None of the documentation I found online was any more helpful. Eventually, I figured out where the control board and CN connector were, and how to get to them. Remove the horizontal vanes remove screw covers Covers removed… screw locations circled After 2 screws holding the unit cover are in place, the cover can be removed by pressing in around the edges, and popping it off.

How to Hook Up a Home Thermostat | HVAC Control

One can always “Overide” the preset schedules by setting the temp at desired setting and pressing “Hold”. If Hold is not pushed after setting temp it will only temporary be set and revert back to the factory or preset schedule at the preset programmed time. This will reset ALL settings even the heat pump or non-heat pump, single stage 2 stage, etc. All of them and you will have to start from scratch to set up stat like when you first installed it.

Okay, to do a reset as follows:

I am trying to hook up a Honeywell RTH Tstat to the existing Rheem HVAC in my house. Currently using Rheem thermostat that came with the house (non-programmeable, using mercury tubes). Heating is provided by a heat pump as well as Natural gas furnace for .

This is often the case. Replacing the thermostat might initially appear to be a simple task, but once your remove the cover from your thermostat, you might become intimidated by the wires and connections. As long as you pay close attention to where the wires attached to your original thermostat, you can hook up the wiring on your new Honeywell thermostat model RTH B without mistakes. Step 1 Turn off the circuit breaker to your central heating and air conditioning unit.

The low-voltage thermostat wires are powered through the main heating and air system in your home. Confirm the power is off by testing the wires for voltage using a non-contact voltage tester. Step 2 Trace each thermostat wire to its terminal screw. Look next to each terminal screw for its identifying letters or numbers. Write each terminal screws’ identifier on a small piece of masking tape and wrap the tape around the wire attached to the screw.

how to wire a thermostat to a furnace

It can also be pretty simple given that you have the right tools. But before reading this and following through, make sure that you view our disclaimer as we are not going to be held responsible if you damage your equipment or injure yourself. If you still feel like you have enough common sense to follow this guide and install a thermostat yourself and save money, then read on… Determine What Type of System You Have First The following thermostat replacement tutorial is covering a split system, single stage compressor, using a 1F White Rogers digital thermostat.

DIY Thermostat Replacement Tools Needed for Easy Replacement — Small flat head screwdriver, needle nose pliers, wire strippers, volt meter, drill with Phillips head drill bit, drywall anchors. Removing the Old Thermostat First thing you want to do is turn the power off to the air handler or furnace.

Thermostat Wiring: Trane to Honeywell (Heat Pump/AC Power Y – Compressor G – Fan W/W2 – Emergency O – Cooling Change Over B – Heat pump Two hidden wires (Unknown) My Air Handler: Trane GAM5A0C42M31SAA and it’s manual w/ wiring TRANE XR to HONEYWELL RTHWF WIFI THERMOSTAT Can’t wait to get home and wire it up. If I don’t add.

You will appreciate the option to set the timer so that the floor is warm when you need it most. Imagine waking up to a warm bathroom at 6: Using a floor sensor that is embedded in the mortar just below your finished floor, the sensor monitors the actual floor temperature to provide you with accurate comfort levels.

We offer both programmable and non-programmable thermostat models below. With the FGS Programmable thermostat, you can program the electric radiant floor heating system to heat the floors in the early morning hours and again in the evening. Both models have a large blue backlit LCD display for easy viewing. The TH programmable model offers the same features at the TH model, but also offers advanced features of control including an early start function, temporary override capabilities without changing programming, and full 7-Day programmability.

Controllable from your web browser, smartphone or tablet, this unit provides flexibility never before seen in a floor warming thermostat.

how to hook up thermostat to ac unit

Heat Pumps Part 3: When you first look at a heat pump control system, it can be overwhelming. Control systems utilize low voltage circuits since line voltage systems would be difficult and expensive to wire. We will look at only those devices associated with a residential heat pump.

Heat Pump Thermostat Wiring Chart. This is for use for heatpumps. You should % make sure that you have a heat pump system and not an air conditioner with electric heating strips as it is a common mistake for people to misidentify their HVAC systems.

Always follow manufacturers instructions for both the thermostat and the HVAC system. Additional articles on this site concerning thermostats and wiring can help you solve your problem or correctly wire a new thermostat. These charts and diagrams only represent the basic system. It is possible your system is equipped with additional HVAC components such as a humidifier or electronic air cleaner. Depending on the manufacturer and the designer of the components will depend on how the additional components are wired or integrated into your system or thermostat.

It corresponds to the chart below to explain the thermostat terminal functions.

Honeywell Thermostat Installation and Wiring