What is W1 and W2 on a Nest 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.
Where does W2 wire go on Nest Thermostat?
Note: If you have an R, Rc or Rh wire, you can put it into the R connector on the Nest Thermostat. If you have a W2, Y2 or O/B wire, you can put it into the *O/B connector, if needed. Gently tug each wire to check they’re secure, and make sure each connector that has a wire stays down.
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.
What is the W1 wire on a Nest Thermostat?
The W or W1 wire controls your heating system. Y or Y1. In most systems, the Y or Y1 wire controls your cooling system. If you have a heat pump, your Y or Y1 wire controls your compressor. Your compressor is responsible for heating and cooling your home.
What is W2 on Nest Thermostat?
For a Nest Learning Thermostat: Y1 = Yellow (Heat/Cool) G = Green (Fan) O/B = Orange (Heat Pump) Rc or Rh = Red (Power) W2 = White (Auxiliary Heat) C = Blue (Common)
What does the blue wire do on a thermostat?
The Blue or “C” Wire
C wires or varying colors apply to every thermostat, but blue C wires belong to thermostats attached to a heat pump. Blue wires are for heat pumps, like orange wires. This wire connects to terminal B on your thermostat.
What are W1 and W2 wires?
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. If you have a heat pump system with auxiliary heating, you’ll normally connect the AUX/AUX1 or W2 wire to the ecobee’s W1 terminal.
What does Stage 1 and 2 mean on my thermostat?
The second stage is the full capacity of your system. 1/3 compressor capacity is the 1st stage. 1st stage is more efficient than 2nd stage, but systems are designed to use both stages, so no worries there.
How do you wire a Nest Thermostat for dual fuel?
Quote from the video:
Quote from Youtube video: So we have our w1o AG. And I'll start terminal which is going to be for the dual fuel. We are now finished with this portion of the wine to make the little minor change to start the thermoset back.
Does Nest need RC and RH?
The Nest Thermostat E only has an R connector, which is typically where an R wire would go. If you have separate heating and air conditioning systems, you might have separate Rh and Rc wires that come out of the wall and are connected to your system.
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 the color codes for thermostat wiring?
This is the most typical thermostat wiring style, and it applies to systems that regulate both heat and air conditioning. The wires are typically arranged as follows: red for 24-volt hot, white for heat, yellow for cooling, green for the fan, and blue for common (although the common wire may be a different color).
What color is W2 wire?
General Thermostat Wiring Color Code
| Terminal | Wire Color |
|---|---|
| W2 | Brown |
| G | Green |
| C | Blue/Black |
| O/B | Orange/Dark Blue |
How do you wire a Nest thermostat?
Quote from the video:
Quote from Youtube video: Simply hold down the connector button and push the wire all the way.
How many wires do I need for Nest thermostat?
The Nest Thermostat is compatible with 2 wire low voltage HVAC systems that are either heat only systems or cooling only systems.
Does Nest work with two wires?
Quote from the video:
Quote from Youtube video: Now we've got the existing thermostat removed. And we have our two wires we've got the red wire which is the power wire and we've got our white wire which is the call for heat wire. So we're ready to
Does Nest need C wire?
With a Nest Thermostat E or Nest Learning Thermostat, you’ll need to install a C wire if the thermostat has power issues or its battery often drains.
How does Nest get power without C?
In a system with a C-wire, the Nest charges itself from the C-wire’s current and all is fine. In a system without a C-wire, though, Nest recharges its battery when the heating or cooling runs. It diverts a little bit of the power to itself and charges its own battery.
How do I bypass the C wire on my thermostat?
Quote from the video:
Quote from Youtube video: Connect the extra wire to the C terminal of Union thermostat trace the extra unused wire from the thermostat to the furnace board make sure it's connected to the C.
