Heat Pump Thermostat

Also note that it may be against the law, code, or regulations to do this without a permit, or it might void your insurance or warranty. Check your local regulations before continuing. The Nest Thermostat is one of the most popular smart thermostats on the market, mostly thanks to its unique design and easy-to-use user interface. So if you tend to turn down the heat when you go to bed and turn it back up when you wake up, the Nest will learn this and do it for you, without you having to program it manually. If you see a handful of tiny wires in all sorts of different colors, then you likely have a low-voltage system, but if you see only larger wires that are connected with wire nuts, then you likely have a high-voltage system. You can also look on the thermostat itself to see how many volts it is. A typical high-voltage thermostat with black and red wires. A typical low-voltage thermostat, with multiple small wires in different colors. Remove Your Current Thermostat Locate your thermostat and turn it off. You might also have to turn off a third breaker for the wire that gives the thermostat power.

Heat Pump Thermostat

CCC November 24, , 7: Assuming your local officials are competent, by pulling a permit you will ensure that the system is inspected by a qualified professional who will not sign off unless it is properly installed. Reply RLepage November 24, , 9:

If you have a heat-pump, you will either have a wire in the B or O slot. To change the HVAC configuration to match the wire connections on the top of the thermostat, tap the up or down arrows located on the right side of the screen until the correct letter is shown.

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. Before uninstalling the old thermostat take a picture of the wiring with your cell phone before removing the wires. This way you have a reference. At the minimum draw a picture of it referencing the wires, wire color and what terminal the wire is attached to what terminal. The photo and the drawing reference can be used later to make sure you wire the new thermostat properly.

Make sure you do not make these same mistakes others make. Air conditioners are different because the reversing valve and defrost controls are unnecessary.

Thermostat Wiring for Dummies

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Learn how to wire basic thermostats and digital thermostats to operate heat and cooling. Honeywell thermostat wiring instructions for 4 & 5 wire applications. Learn how to wire basic thermostats and digital thermostats to operate heat and cooling. If wires pass through a floor and up into a wall cavity before reaching a thermostat. Try the.

The two different names refer to the same thing: In normal operation, a heat pump works like an air conditioner: One heat exchanger is located inside the house or apartment, and the other is outside perhaps on the roof. In summer, the heat pump circulates in one direction, causing the refrigerant vapor to be compressed just before travelling through the outdoor heat exchanger, where heat is released; then through the bottleneck value making the refrigerant cold and then through the indoor heat exchanger where the indoor air gets cooled.

In winter, solenoid-actuated valves reverse the circulation pattern, so that the compressed vapor goes immediately to the indoor heat exchanger to release heat into the indoor air, then through the bottleneck valve and the outdoor heat exchanger, where the relatively-colder refrigerant is warmed by the not-quite-so-cold outdoor air. You’re “air conditioning the outdoors”, cooling the air outside in order to warm the house.

When operating in this second “heating” mode, there is a limit to how well it can work when the outside temperature is very cold. For this reason, heat pump systems installed in climates that go below freezing need another way of providing heat, if only for a short time in the morning when your system goes from your lower “while asleep” temperature setting to your higher “while I’m awake” setting.

Thermostat wiring question – 8 wires? Help!?

Diameters range from 4 inches up to 12 inches. There are a number of companies that make a line of these fans. One source is stores that sell plant growing supplies, also available on ebay.

The Nest Learning Thermostat works with 95% of 24V heating and cooling systems, including gas, electric, forced air, heat pump, radiant, oil, hot water, solar and geothermal.

CCC November 24, , 7: Assuming your local officials are competent, by pulling a permit you will ensure that the system is inspected by a qualified professional who will not sign off unless it is properly installed. Reply RLepage November 24, , 9: In some cities in BC, despite pulling a permit for work, this does not guarantee that an inspector will review the work.

They usually assume that the work is done by a competent and trained individual and have therefore deem the work compliant. Depends on what kind of work is being done, by whom, and under which jurisdiction. Fred Jenkins November 29, , Reply DAnny November 23, , 9: Mike S November 30, , Reply Donna December 20, , If I had a garage to work out in; I would do a lot more. Luckily, when absolutely necessary, I am able to diagnose the car and have a reliable, low-cost place to send it.

Paying the going rate for shop rate and the mark-up on parts is unacceptable to me.

How To Test a Thermostat

This article is scheduled for a complete re-write. In the meantime, the following Q and A may address a very common issue. If you do need additional wires, you will want to consider how difficult installing new wires will be for your application, and if you need to budget for an electrician or HVAC tech to install the proper wiring. A previous installer may have used a different set of color wires.

This will be a non issue to keep track of if a whole new set of thermostat wires is pulled.

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

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. Before uninstalling the old thermostat take a picture of the wiring with your cell phone before removing the wires. This way you have a reference.

How do i hook up a thermostat to a heat pump?

Bk Needless to say, there really needs to be a better labeling or coloring system. In fact, thermostats should really go towards an IP system and use an Ethernet cable. Let me say that Nest support was awesome. I could talk with a clearly spoken woman who worked in Oklahoma and took the time to understand, address, research and resolve my issue promptly.

You may become confused when you need to hook up heat pump thermostat wiring because of the number of must hook up at least 8 and sometimes 10 wires. The heat pump thermostat wiring must be correct in order for you to get the right amount of cooling and heating.

Typically the HP coil is installed on top of the gas furnace downstream air flow wise. The heat from the gas furnace will most likely cause pressure issues with the heat pump. In dual fuel configurations, we decide on a break point tipping point and switch to the aux heat source. This is usually decided by economical considerations as well as comfort considerations. And yes, 10 degrees is a large set back differential when you are talking heat pump.

Most modern thermostats can be configured to do all of the control work for you like switch to aux when the outside temp puts you into a defrost situation or when you have a big set back to overcome. Also, at 60 minutes your heat pump may be going into defrost when it does not need to. Run all of this by your tech and have him guide you to the most economical and comfortable solution s.

In defrost the heat pump simply removes some of the heat the furnace provides. Running the furnace while the heat pump is heating is a definite problem though!! As you stated it’s best to have a control to automatically switch from HP to furnace at the appropriate temperatures.

Thermostats

If you have single-stage electric or gas heat, and single-stage air conditioning, the terminals with wires attached on your old thermostat may be: If you have a single-stage heat pump system with electric back up heat, the terminals with wires attached on your old thermostat may be: Disconnect wires and remove base After labeling the wires, remove one wire at a time from the old thermostat base and secure it by wrapping the wire around a pencil.

This will keep the wires from falling into the wall.

Installation Guide Quick Start Guide. 5 A B A B Phillips screwdriver or 1 – 2 stages of heat pump compressor W W1, W2: Used for 1 – 2 stages of conventional heat cooling setpoints, thermostat name) • Set up wi-fi • Register your ecobee3 online hi Tip: .

To wire a thermostat, you must first be aware of the type of system that you have in your home. The thermostat wiring on these systems can have very similar wiring properties. But what if you have a system that’s a little different like a Heat Pump System, Then your thermostat is going to be wired a little different as well.

First and foremost when you go to wire a thermostat, if you have any doubt of the type of HVAC system you have and are uncomfortable with wiring, then I highly recommend using a qualified HVAC service technician to complete your task. This could save you a lot of unnecessary expenses in the long run. Now the thermostat circuits I will be covering will consist of the two scenarios I mentioned above.

But an important issue here is that the diagrams and wiring color codes are going to be the most common standardize method. Always keep in mind that who ever wired your thermostat may not have followed these procedures and your color codes will not match the following examples. You will have to determine this before you start disconnecting any of your thermostat wiring. I would highly recommend that you write down what color wire is going to which terminal.

This way if your color codes don’t match the normal code as the chart below indicates, you can still get a good idea of which wire should go where on your new thermostat. If you’re changing your old style thermostat to a programmable type, then most HVAC systems are compatible and will work just fine with a programmable unit. But in the case of a Heat Pump system, You’ll really have to do some research to verify that the programmable thermostat will work. The following is a chart showing the most common terminals and their respective color codes and what that particular wire is used for in the circuit.

Honeywell Thermostat Wiring Instructions

With a variety of options available from the Infinity, Performance, and Comfort series, you are sure to find the right option to keep your home comfortable. What Does a Heat Pump Do? Wondering, what is a heat pump? An air source electric heat pump is a versatile heating and cooling system that utilizes an air handler to move heat from one place to another. In the summer, a heat pump system moves heat from inside your house to an outdoor unit, efficiently cooling your home.

Here is a link to the wiring diagram for my heat pump. The thermostat that I am planning on buying has the following terminals C, G, Y, O/B, RC, R, Aux, E, and L. The instructions say to jump the RC and R together after you connect the R wire. On the wiring diagram I can see where the the R, Y, G, and O wires match up on the Heat pump(HP) and the thermostat(TS).

Several of us have said about the same thing. Maybe it would be clearer with a little more background on thermostats. The thermostat is wired to switch the power from the red to the white, yellow, and green as needed with the blue completing the circuit. Many have RH and RC to allow separate transformers for heating and cooling. With just one red wire, jumper them. Internal wiring may replace the green wire if the thermostat does not give you the option of fan only or continuous fan.

Digital or programmable thermostats may need the blue wire connected to them. Yes, circuit boards are expensive if one goes bad. I hadn’t been messing with the wiring, I blame a lightening storm. However, like many expensive things, they have a cheap little blade fuses to protect them. It is very difficult to blow a circuit board with the breaker for the furnace off. My furnace is 2 stage, but I have the dip switches on the circuit board set to allow the furnace to decide which stage to run.

If your furnace follows the wiring scheme above, likely it is set up the same way.

Heat Pump Thermostat Wiring Chart Diagram – HVAC

We changed the thermostat today and switched it off but the heater is still on. We cannot find a reason why and we have verified the wiring and all is correct. Is it possible that something else may not be working? Maybe the transformer or some kind of regulator? First disconnect the thermostat wires right at the heater itself, at it’s control.

For Sensi™ Wi-Fi Thermostat, a common wire (c-wire) is required for heat only systems, cool only systems and heat pump without auxiliary heat. For Sensi™ Wi-Fi Touch Thermostat, all system types require a common wire (c-wire).

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. Then you are going to remove the cover from the old thermostat. Usually this is done by pulling from the top of the thermostat in the middle, towards you and the cover should pop right off. With your small flat head screwdriver loosen all of the set screws from the wires and using you needle nose pliers, remove the wires from the set screws.

Unmount the screws securing the old thermostat and then you should be able to pull the thermostat off of the wall. Installing the New Thermostat Pop the cover off of the new thermostat, note that some T-stats have a small set screw that you will have to loosen to get the cover off, but this should be covered in the installation instructions. The I will usually get a pen and a torpedo level and get an idea of where I am going to mount the thermostat.

Once I got it flush against the wall with the wires through the hole I will make two marks with my pen. Pull the thermostat back from the wall and insert your drywall anchors. Now just put the thermostat flush against the wall pulling the wires through the middle and mount the thermostat with the screws provided.

Thermostat Wiring Made Simple