Installing a Nest Learning Thermostat
You will learn how to install your Nest Learning Thermostat in 12 easy steps with guided photos. The instructions provided here are straightforward for your installation requirements to replace an old or existing heating or cooling wall mounted equipment (not a new one for first time).
Before you begin, let’s read thru the compatibility list to be sure that your HVAC system will work with the Nest products. At the end of this evaluation, Nest will give the recommended wiring diagram for your installation.
Nest Thermostat Compatibility
This smart device is typically compatible for homes with 24V systems which include electric, gas, forced air, oil radiant & heat pump and variable speed compressor.
It is also able to control the following settings:
- Cooling: one and two stages (Y1, Y2)
- Heating: one, two and three stages (W1, W2, W3)
- Fan (G)
- Power (C, Rh, Rc)
- Heat pump: with auxiliary and emergency heat (O/B, AUX, E)
- Humidiﬁer or dehumidiﬁer (HUM, DEHUM)
It has a connector that can accept only one of these wires: W3, E, HUM or DEHUM.
Lastly, this thermostat is designed to function regardless there is no common C-wire. In very rare cases that you may need to install a new C-wire.
Now that you have gone thru the compatibility checklist, it is time that you proceed on how to install Nest Learning Thermostat.
1. Switch off power
Safety first! Since you will be dealing with electrical connections, it is a good rule of thumb to pay attention with your safety.
Switching off your breaker box and switches before exposing live electrical wires will prevent unwanted accidents to yourself (and others) as well as to your equipment.
You may also want to adjust the temperature of your HVAC by using your old thermostat device to be sure that is really turned-off.
2. Remove cover
Now, you may want to remove your old thermostat’s cover in order to inspect its wiring connections.
Taking some photographs of the original wiring setup can save you the trouble later if installation does not went well and you want to return back to your original settings.
3. Check your system
Now is a good opportunity to examine your wiring connections whether it is compatible with Nest products or not.
It is necessary that you come back to the Nest online compatibility checker to be completely sure.
Do not proceed to the next steps if it is not compatible!
4. Remove any jumper wires
Moving forward for the next steps of this installation guide.
You can now safely remove the wires from your old thermostat system. Take note of jumper wires which can be seen as shorted wires. You do not need them when installing Nest thermostat, so you can safely remove them.
But, keep them together with the photo that you taken previously. It will be handy later when you want to change with a different smart device.
5. Label wires
Your installation manual comes with blue and white wire labels. You need to peel off the blue labels and attach to its associated wires. While, use the white labels for E, W3, HUM or DEHUM wires.
6. Disconnect wires and remove base
Now that you have identified the different wire connections with their respective labels, you may now start to start to disassemble the your old thermostat system.
Tip: To avoid situations where the long wires will tend to drop from the socket hole, you can wrap them around some pencils or pens.
Carefully disconnect the wires from the main terminals, and then start to unscrew its base. Remove the base fully such that only the labeled wires are left from the wall.
7. Mark where screws will go
Take your Nest trim base plate and position it on the wall. This trim plate will neatly hide any unwanted scratches, patches or holes from your old setup.
A bubble level will be a handy tool to ensure that it is perfectly flat. Then, mark the points where you will need to secure your screws into it.
8. Attach base
After you have secured the trim plate, it is now ready to receive the Nest base. Simply attach the Nest base into the wall trim plate.
9. Connect wires
Remember the labelled wires?
It is the right time to match the labels with its corresponding names that you will find on the Nest base. You may also refer to the Nest Learning thermostat wiring diagram below or thru the online compatibility checker as you have done previously.
Firmly insert each wires into the terminal holes while pressing down the connector button. Push down as far as you can to ensure a good connectivity. Then, carefully release the button making sure that the wire stays down in its place.
10. Attach display
Aha! Finally, you are almost done. Attaching the display into the base is simple.
Hold it upright such that Nest Logo will be right-side up. You may want to position the back display pin connector to the hole on the base and then push into it. A click sound confirms that you have successfully done it.
11. Switch power back on
Switch back your breaker box to power-on your thermostat for first time use. Normally, it will operate successfully without any issues.
12. Setup and Nest Account
The device display will start to show you its pre-launch series of questions. This will be fairly simple to answer such as your preferred language, about your smart home system, your heating or cooling equipment, your location, date, time, weather information, and lastly your temperature preference.
To select your choices, simply turn the dial left or right. And then confirm your answer by lightly pressing the ring display.
After completing these series of questions, Nest will start to perform its system tests.
Setting Up Your Online Nest Account
- From your iOS or Android device, launch the Nest App.
- Then search for Sign-Up link in the apps’ main home screen.
- Supply your email address to the entry field, and then choose a strong password.
- A verification email will be sent to the email address that you had provided.
- Click the confirmation link to complete your sign-up process.
How to Obtain Nest Learning Device Entry Key
- From the device display, turn the dial until you reach Quick View menu.
- Then choose Settings.
- Proceed to Nest Account, and then Get Entry Key.
- Write down this important unique system key.
Adding New Product to Your Nest App
- Open the Nest Apps.
- Sign-in to your account with your email address and password.
- Go to Settings, and look for Add Product.
- Option 1: Using your smart phone’s camera, scan the QR code that is usually located at the back of your thermostat.
- Option 2: Choose “Continue Without Scanning” and selecting Nest Thermostat. Press the Next button twice. Enter the unique system key that is usually 7-Digit code.
- You are now ready to use, control and monitor your Nest Learning Thermostat via the Apps.
Nest Learning Thermostat Wiring Diagram
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