What are I+ and I wires on thermostat?

The i+, i- wires are specific to lennox furnaces and iComfort thermostats. When an iComfort thermostat is used with a lennox furnace, there are more advanced features of the furnace that can be used, such as turning on at partial power and better timing of the power of the furnace.

How do I change a 4 wire thermostat to a 5 wire?





Quote from the video:
Quote from Youtube video: So what you do is you go up to the HVAC unit. And run a wire from the Y to the G if you remember Y is your compressor.

What is W1 and W2 on a thermostat?

W/W1 and W2. In a conventional system, W/W1 controls your heating system and, where applicable, W2 controls your heating system’s second stage, which helps warm the home faster.

What happens if you wire a thermostat wrong?

Potential consequences of improper installation could include: Electric shock. Blowing a circuit breaker. Damaging the thermostat unit, the electrical system or even the AC/furnace unit itself.

What are S1 and S2 wires on thermostat?

S, S1, S2: These wires run directly outside and provide outdoor temperature information to the thermostat.

Are R and RH wires the same?





R , Rh , and Rc are all the same, but not. In general terms, the R terminal is where you connect the signal voltage source. In low voltage controlled systems, there will be a step down transformer that provides the power to the control circuitry.

How do you replace a old 2 wire thermostat?

Quote from the video:
Quote from Youtube video: So the first step is popping the old thermostat off generally they just pop off like so you can see this one has no batteries in it it's a two wire system.

Is the RC wire the same as C?

The C and Rc wires are not the same. To install this thermostat you should follow the exact same wiring of the previous thermostat.

Does white wire go to W1 or W2?

Thermostat White Wire (“W1” or “W2” Wire)



W wires go directly to the source of heating; that may be a furnace (gas, electric, oil, you name it) or heat pumps (mini-split heat pumps included). W2 is designated for two-stage heating. Most heat pumps include second-stage heating and require the white W2 wire.

Can you jump W1 and W2?



If W1 is only wired up, it will always run in 1st stage, 2nd won’t come on unless W2 is wired to a two stage t-stat, or jumper to it.

Can you jumper W1 and W2 on thermostat?

W1=Stage 1, and W2=Stage 2. Your thermostat wiring only has 5 wires. In order to support 2 stage heating, you’ll need to replace your thermostat wire with a 6 wire bundle instead. You would then remove the jumper between W1 and W2 and run separate connections to W1 and W2 on the Nest and W1 and W2 on the furnace.

What are the 4 wires on a thermostat?

This is a popular configuration for a battery-powered thermostat or a digital thermostat that solely regulates heat. The standard configuration consists of 24-volt hot (red), 24-volt common (blue), heat (white), and a fan (green).

What color wire goes where on a thermostat?



In general, the thermostat wire colors match the first letter of terminal names such as Red Wires for R terminals (for Power), Yellow Wires for the Y terminal (for Cooling), White for the W terminal (for Heating), Green Wires for the G terminal (for the Fan).

Can I replace my thermostat with any thermostat?

Purchase a replacement thermostat that will work with your system. Review the compatibilities listed on the packaging of the replacement thermostat. Most replacement thermostats are compatible with all common systems. However, if your system is unique, finding a replacement thermostat may be difficult.

Can I replace my old thermostat with a new one?

It is possible to replace your old thermostat yourself, but you’ll need some basic electrical knowledge and have to carefully follow the instructions to do it properly and safely.

How do you wire a 2 wire thermostat?

Quote from the video:
Quote from Youtube video: So you'll need to figure that out but usually black is always hot and white is always your leave going up to the furnace. But your colors might be different so you're going to have to check that.

How do I know if my thermostat is compatible?



Quote from the video:
Quote from Youtube video: Works select nest thermostat. Then select your country at the compatibility checker main screen tap get started then power off your hvac. System and remove the cover from your thermostat.

Are thermostats universal?

To answer this question in one word: no, thermostats are not exactly universal. The type of thermostat you choose to buy will depend on the type of HVAC system you have at home and when it was installed.

What color is C wire?

Blue wires

Blue wires are also called “C” wires because they are the Common wire. C wires are necessary for any “smart” thermostat that needs to be connected to a power source 24/7, regardless of your heat pump type.