E — There is no universal color used for this terminal designation but this should be wired directly to the heating relay or the E terminal on a terminal strip board in the air handler or package unit if you have a heat pump package unit. The power for the condenser and air handler is done at the circuit breaker box or the equipment itself. Therefore, if you wire it wrong or accidentally touch the wrong wires together you can blow the transformer. Always follow safety instructions especially with electricity. Applied practical application practices mentioned within this website can turn the average home into a working living sustainable environment thus reducing your dependence while reducing living costs. Connect the active cooling tap to Terminal A. Will I blow anything up? For all other vent configurations, the vent system is assumed to have two 90 ° elbows.
Or is there a special communication going on that the comfortnet thermostat interprets and controls the fan? The red wire should always come from the hot side of the 24-volt transformer. There are limitless topics to cover such as wind and solar energy, active and passive solar heating and air conditioning, hydrogen, methane, gardening, aquaponics, house design, home engineering, urban and wilderness survival to name a few. Problem is it wont shut off at the T-Stat just keeps going. Wrap it around the bundle and wire as instructed. I have been doing endless research, but nothing! This type of wire is different from the typical thermostat wire and a separate wire altogether.
I think that you responded to questions I had awhile ago. Or is it more complicated than that? There are also several different settings, usually done by dip switches that will control various things including ramping the blower. The nest only used 6 of the 8 wires that came from the unit when I hooked it up. Thank you very much for your response. Lennox website has the Engineering Data but no internal wiring diagrams.
Most of all, only if you are confident in your skills. Thank you so much and look forward to hearing back! I have a heatpump with heat strips for 2nd stage heating. The choices are in seconds: 90, 150, 210 or 270. The furnace should also be located close to the chimney or vent termination point. As far as the limit for electric heat they are all about the same also. This can get complex especially when the word algorithm is used but the control is much more precise when it is done properly and in the long run that will save you money.
To make this work through a thermostat you need a thermostat that has a W-2 termination. Submit a Comment Your email address will not be published. It should look like this: There are two sides to the transformer, the line side with high voltage one one side of the transformer and the control side which are the wires that provide the control voltage for the system. If I install a smart thermostat with no fan wire , would the fan be controlled by the air handler? Please click subscribe, like and share the video. The other wire coming out of the same side of the transformer is the common side of the transformer.
Thank you for any info you may have out there. Connect the active heating tap to Terminal H. Bottom and one side return air. C — This is the terminal which originates from the transformer and is necessary to complete the 24 volts power circuit in the thermostat but only if the thermostat consumes electricity for power. All while saving money, learning a new skillset, and keeping your family cozy and warm.
Know a good forum for that info? It is likely you have a simple R terminal at the thermostat and that is where the red wire should be terminated. Let me know if you can help out. Jumper exists between V and Vr. We will show you have to complete your repair on your own with one of our how-to-videos, testing the parts and replacing the parts you need to get the job done right. All service must be performed by a licensed professional installer or equivalent , service agency, or gas supplier.
There are with low fire and high fire and some depend on control from a thermostat with a W2 terminal. You have to go to the air handler, kill the power, open the panel, and find out which wires go where. You can find all the information if you have the communicating thermostat. This is the wire you are looking for. I took a look at the furnace and at the board, the guy never installed the two wires coming from the Contactor low Volt Side. You need to find out what that black wire is for. I figured it may come down to trying to trace wires and see what happens when different cycles occur.