![]() The most common configuration is five wires. You should typically see an 18-gauge solid core wire. If you see wires connected to terminals labeled G1 G2 G3, you need a thermostat capable of controlling multiple fan speeds none of our retail thermostats are compatible with this system type. This type of wiring requires a line voltage thermostat and is not compatible with low voltage thermostats. If you see thick, black, or red wires, you have a line voltage system. Your new thermostat may not be directly compatible if you see terminals labeled A B C, or 1 2 3, as your system requires a communicating thermostat. Make sure the terminal markings are visible. However, some lift from the bottom and lever off, and others have a locking tab. Most thermostats pull directly off the wall. Next, remove your existing thermostat from the wall plate. You can skip this step if you have a digital thermostat with a blank display. If you don’t hear or feel the system turn on within 5 minutes, the power is off. To confirm your system is off, change the temperature on your existing thermostat, so the system starts heating or cooling. To protect your equipment, turn off the power at the breaker box or switch that controls your heating and cooling. If you have a dual-fuel system, or are unsure, pause and contact a Professional HVAC Contractor.įollow the instructions below to guide you through basic wiring: *Trade model thermostats must operate “dual-fuel” systems, which use a heat pump for the first 1 or 2 stages and a gas or oil furnace for backup/emergency heating. O/B – Reversing valve for Heat Pump systems U – Humidifier, Dehumidifier, or Ventilator control See the diagram below for the role of each wire in your system: The thermostat uses one wire to control the primary functions of your HVAC system, such as heating, cooling, and fan. Consult your owners/install guide for wiring examples and systems compatible with your thermostat*. If you don’t know to which terminal each wire connects, it may be necessary to go to the HVAC system and look at the designations on the control board. ![]() When wiring, each wire should be identified by what terminal(s) it connects to - never by color. *There is no standard for which color wire controls each function.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |