Some thermostats will have 4 wires coming out of its back, while some others will be having 5 wires … I have 5 wires for thermostat 4 wires to heat pump. HVAC systems with more functions need more wires to communicate to and from the thermostat. 5 wires are coming out of one cable, and 3 wires out of another. The Orange Wire. 6. What would be the best way to wire a heat pump? 5-wire thermostat wiring: This type of wiring is usually found in air conditioning systems or gas furnaces. The illustration is the interior of a common two wire heat-only household thermostat, used to regulate a gas-fired heater via an electric gas valve.Similar mechanisms may also be used to control oil furnaces, boilers, boiler zone valves, electric attic fans, electric furnaces, electric baseboard heaters, and household … 5 wire hook up on old thermostat r=red,y=yellow,c=blue,w=white and G=green. Terminals on new thermostat does not have a C termin … read more When you make use of your finger or even follow the circuit together with your eyes, it may be easy to mistrace the circuit. It has 5 different color wires, each for a different terminal and function. The 5 wire cable has red, green, white, blue, and yellow. It has most of the same features of the higher end Nest Thermostat but is made from plastic instead of stainless steel and glass like the higher end Nest Generation 3 thermostat. Yes, the C-wire powers Wyze Thermostat. Southwire 64169622 5 Conductor 18/5 Thermostat Wire, 18-Gauge Solid Copper Class 2 Power-Limited Circuit Cable, 50-Feet, Brown 4.6 out of 5 stars 610. 5 Wire Thermostat Wiring Install. 5-Wire Thermostat wiring This is the most common HVAC system, it operates with many central air conditioners that work with an air handler and/or a heat pump/gas furnace. The three wire cable has red, white and green. The thermostat is the control device that provides a simple user interface with the internal workings of your homes climate control system. It is made for simple heating systems which is the most common system in homes. Even the most seasoned people who enjoy DIY may come across problems with wiring a thermostat. It turned into a simple exercise of connecting the “blue” wire and providing the C wire as needed. If we put it simply, a 2 wire thermostat is one which has only 2 wires coming out of its backside. As you already know, there are different types of thermostats serving different types of heating/cooling systems. The most common is 18/5 (5 strand, 18 gauge). I am trying to rewire a 5 wire Honeywell thermostat. Moreover, the heat source for a basic ac system can include heat … There are a variety of thermostat wire types. Thermostat Signals and Color Code, from Xtronics.com ; Thermostat Wiring for Dummies, from ThermostatCenter.com Revision History. Some programmable thermostats (e.g. Most people don’t use the “fan only” mode, so while you’d give up control over the fan in the system, you’d gain constant power to the smart thermostat. The orange wire only applies to homeowners with an air-source heat pump. You’ll also have to change the wire at the furnace from G to C. 5. The main difference setting each apart is the number of colored wires. The 5 wires cover R (Red) for 24-volt hot, W (White) for heat, Y (Yellow) for cooling, G (Green) for the fan and Blue for C-Wire (This is a common wire… Types of Thermostat Wire. Be sure to identify and label the existing thermostat wires before disconnecting them from … Wrapping old wire in electric tape protects you and the system from any type of past or future damage. The Honeywell RTH230B thermostat is electronic and programmable. I would like to replace the existing thermostat wires on my 2000's era janitorial furnace with the upgraded 5 wire setup that will allow fan control of my Honeywell wifi 9000 thermostat. Thermostat wire is a class 2 power-limited circuit cable for use in thermostat. This electrical wiring question came from Christie in Phoenix, Arizona. Don’t have a C-wire? The wires are blue,green,white,orange and red. The fan should now be operating. The basic thermostat is a 2-wire thermostat and its main disadvantage is that it is used only for heating. No, the thermostat does not work with electric baseboard heating, which is a high voltage (120V or 240V) heating system. Yes you can use this thermostat, or any other that requires a “C” wire, even if you have only a 2-wire thermostat. The two main types of 24-volt thermostat wiring are two-wire (red and white) and three-wire (red, white, and blue), but you can find up to eight different wires. Red wire for 24-volt hot; White wire for heat; Yellow wire for cooling; Green wire for the fan; Blue wire is the common wire (common wire … for general info b and o are used if Thermostats are wired in series, in that power comes to the.5 Wire Honeywell Thermostat Wiring. So 4/4 and 5/5 when dealing with the wire setup. Dave’s Reply: Thank you for your electrical wiring questions. I have looked everywhere on line to try and figure out what to do, but all of them only used 5 wires. Turn the power on to the HVAC at the circuit breaker. My wiring had 5+ wires going to the thermostat initially, however only 4 were in use (R, Y, G W). Configure the thermostat following the manufacturer’s settings. 2020-05-21: Tweaked the optimizations. Heck, now I’m not calling anyone a dummy! 2019-05-14: Tuned the targeting for ‘4 Wire Thermostat Wiring Color Code’, … How are these wires connected? When it comes to thermostat wiring, you will find that most models follow a set color code for ease of use. The Nest Generation E Thermostat is a less expensive version of the Nest Thermostat. A thermostat turns your furnace and air conditioner on or off depending on the temperature in the room and the setting on the thermostat. It also functions as a 2 wire wifi thermostat. It would be next to impossible to change wiring. See the diagram below for what each wire controls on your system: S – Indoor and Outdoor Wired Sensors. It’s used for systems that don’t provide a C wire but have a thermostat that requires one. Usually, the red wire is connected to the "R" terminal, the white wire is connected to the "W" terminal, the green wire is connected to the "G" terminal, the yellow wire is connected to the "Y" terminal, the black wire is connected to the "C" terminal, and the brown wire … Southwire 5 Thermostat Wire (By-the-Foot) Item #100811 Model #64169611. This is definitely a lot of information to take in all at once, but use it as a simple guide whenever you’re replacing a thermostat. 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