Installing Common Wire for Wifi Thermostat

How to correctly pull new thermostat wire for Honeywell Wifi Thermostat. The customer’s new thermostat requires a common for power. Always make sure to turn off the breakers and to pay close attention to the existing wiring, taking a picture is always helpful. When checking your wires you can check them at the condenser to make sure that the original thermostat was wired in correctly. A good trick to use when running new thermostat wire through a wall is to use the “cloths hanger trick”, this will help minimize damage and will allow you to quickly determine if the positioning of the new hole will work based on your surroundings. Always check your wire match up with the new thermostat, the common is almost always required for wifi thermostats, that includes the Honeywell Wifi Thermostat (RTH9580WF) and the NEST, the Lyrica thermostat is one of the few that does not require the common. Always follow industry standards with the wire colors, Green is for the indoor blower, Yellow is for the compressor, Red is hot from 24 Volt transformer, White energizes the heat and if you have a heat pump the orange energizes the reversing valve. Always strip your wires and make sure that they are tucked in neatly, this will help you avoid mistakes. Always save your extra wires, never cut them off.

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- David

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** Please do not attempt this at home. Only a Licensed HVAC technician or Licensed Electrician Should Attempt what is shown in our videos. They are just for reference only.

Видео Installing Common Wire for Wifi Thermostat канала David Jones