Installation step by step Learning Thermostat Installation Guide
The Nest Learning Thermostat for the UK and Ireland should be installed by a professional. Please visit nest.com/eu/install to schedule your installation. You’ll see a list of approved Nest Pro installers nearby and find pricing information. A Nest Pro will: • Make sure that your heating system is working. Your system needs to be working and needs to conform to building and safety regulations before a Pro can start working. • Find the best place to install your Nest Thermostat.
Contents Compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 In the box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Before you start . . . . . . . . . . . . . . . . . . . . . . . . . .
Compatibility The Nest Learning Thermostat is compatible with almost all central heating systems, including: • Combi boilers • System boilers with hot water control • Heat pumps (heating only) • Zoned systems • District heating with electrical control valve Control systems: • On/Off • OpenTherm 4 A Wi-Fi connection is required to control the Nest Thermostat with the Nest app and to receive software updates.
In the box Base Trim plate Heat Link Installation step by step Display Screws 5
Before you start You may want to install the Nest Thermostat somewhere new Many wired thermostats are installed in rooms that are rarely used, so the temperature that they sense can be warmer or cooler than the temperature that homeowners feel. If the current thermostat isn’t in a good location, install the Nest Thermostat in a new place with the Nest Stand (sold separately) in a room that’s used more often. → Placement guidelines on page 12.
Installing the Heat Link It’s important to install the Heat Link before the Nest Thermostat. Do not connect the thermostat directly to your heating system. High voltage current will irreparably damage the Nest Thermostat. Installation step by step The Heat Link is necessary, even if there are low-voltage wires.
Installing the Heat Link 1. Switch off mains power You’ll be working with mains voltage, so protect yourself, the heating system and the thermostat by turning off the power before you start.
INSTALLING THE HEAT LINK 2. Connect to power and the control circuit Check the heating system’s wiring to determine what type it is. Remove the Heat Link cover and connect the L (live) and N (neutral) terminals on the Heat Link to the L and N circuit on the boiler or junction box. This will power the Heat Link. Connect the heating control circuit to the Heat Link 1 (normally closed/satisfied), 2 (common), 3 (normally open/call-for-heat) as needed.
Installing the Heat Link 3. Connect to the thermostat wires Skip to the next step if you’re installing the Nest Thermostat on the stand and are using the USB cable for power. Take two wires from the wire bundle that goes to the current thermostat and attach them to the T1 and T2 terminals on the Heat Link.
INSTALLING THE HEAT LINK 4. Mount the Heat Link Use the screws included to mount the Heat Link near the boiler or junction box. Then put the Heat Link cover back on. To help ensure a good wireless connection to the thermostat: • Leave at least 30 cm of space on each side. • Install it within 30 m of the thermostat. Heat Link 30 cm min. Installation step by step Boiler Thermostat 30 m max.
Installing the thermostat On the wall Using the stand Choose this installation method if the current thermostat connects to heating wires in the wall and doesn’t need to move to a better place. Choose this installation method if you’re replacing a wireless thermostat or if the thermostat needs to be moved to a better position. Go to page 13 to start. The Nest Stand is sold separately. Go to nest.com/eu for more information. Go to page 14 to start.
Installing it on the wall 6. Connect the wires Remove the old thermostat if there is one. You can attach the Nest base directly to the wall or use the trim plate included to cover up any marks. Connect the wires coming through the wall to Nest’s T1 and T2 terminals. It doesn’t matter which wire goes into which connector. If you’re using the trim plate, snap it onto the base first, then screw them to the wall as one piece. → Continue to page 15. INSTALLING THE THERMOSTAT 5.
Installing it on the stand 7. Install the Nest Stand Attach the thermostat base to the stand according to the instructions that came with it. Connect the power cable to the base and plug it into a wall socket. Stand-mounted thermostats should be placed on a table or shelf 0.75–1 m above the floor and no further than 1 m from the edge. NOTE: The Nest Stand is sold separately and comes with its own installation instructions. Go to nest.com/eu/stand for more information.
Finishing installation and setup 8. Attach the display INSTALLING THE THERMOSTAT Press the thermostat display onto the base until it clicks into place. Switch on mains power and the Nest Thermostat will begin setup.
Finishing installation and setup 9. Setup 10. Control it with the Nest app The Nest Thermostat will turn on and take you through setup. You can select a language, connect it to Wi-Fi, and tell it some things about your home and system so that it can help save energy. To control your thermostat with your mobile, download the free Nest app from Google Play or the iTunes App Store. Then create a free Nest account with the app. The Nest Thermostat doesn’t have a touch screen.
Getting started Using your thermostat Your thermostat can automatically start learning your schedule or you can choose a schedule with preset times and temperatures. You can edit your schedule at any time. Installation step by step INSTALLING THE THERMOSTAT For help with getting started, learning about Nest Thermostat features, energy-saving tips and more, please go to nest.
Wiring diagrams The following diagrams show you how to install the Nest Thermostat on: 230 V combi boilers (page 20) Low voltage/dry contact combi boilers (page 21) S-plan (page 22) Y-plan (page 23) OpenTherm boiler (page 24) District heating with electrical control valve (page 25) 18
General specs Heat Link Terminal Specification Notes L 230 V AC/50 Hz mains voltage Live wire N 230 V AC/50 Hz mains voltage Neutral wire 1 Heating relay normally closed/satisfied 3 A resistive, 1 A inductive 2 Heating relay common 3 A resistive, 1 A inductive 3 Heating relay normally open/call for heat 3 A resistive, 1 A inductive 4 Hot water relay normally closed/satisfied 3 A resistive, 1 A inductive 5 Hot water relay common 3 A resistive, 1 A inductive 6 Hot water relay normally
230 V combi boiler Input power N L 1 2 3 4 5 6 OT1 OT2 T1 T2 230 V AC/50 Hz 3A L N N L Boiler 20 12 V
Low voltage/dry contact combi boiler Input power N L 1 2 3 4 5 6 OT1 OT2 T1 T2 230 V AC/50 Hz 3A L N B Boiler 12 V Wiring specs A 21
S-plan Input power N L 1 2 3 4 5 6 OT1 OT2 T1 T2 230 V AC/50 Hz 3A L N Boiler 22 O GR BW Heating valve O GR BW Water valve 1 L Com N Hot water tank 12 V
Y-plan Input power N L 1 2 3 4 5 6 OT1 OT2 T1 T2 230 V AC/50 Hz 3A L N O Zone valve W Hot water tank 12 V Wiring specs GR Com Boiler BL 1 L 2 N 23
OpenTherm boiler Input power N L OT1 OT2 1 2 3 4 5 6 OT1 OT2 T1 T2 230 V AC/50 Hz 3A L N OT boiler 24 12 V
District heating with electrical control valve Input power N L 1 2 3 4 5 6 OT1 OT2 T1 T2 230 V AC/50 Hz 3A L N L District heating valve 12 V Wiring specs N 25
Energy Related Product (ErP) Directive Nest Learning Thermostat meets the criteria of the following temperature control classes under the ErP Directive.
THIS LIMITED WARRANTY CONTAINS IMPORTANT INFORMATION ABOUT YOUR RIGHTS AND OBLIGATIONS, AS WELL AS LIMITATIONS AND EXCLUSIONS THAT MAY APPLY TO YOU UNDER THIS LIMITED WARRANTY. YOUR RIGHTS AND THIS LIMITED WARRANTY This Limited Warranty gives you specific legal rights. You may also have other legal rights that vary by state, province or jurisdiction. The disclaimers, exclusions and limitations of liability under this Limited Warranty will not apply to the extent prohibited by applicable law.
AND NEST LABS’ TOTAL CUMULATIVE LIABILITY ARISING FROM, OR RELATED TO THIS LIMITED WARRANTY OR THE PRODUCT WILL NOT EXCEED THE AMOUNT ACTUALLY PAID FOR THE PRODUCT BY THE ORIGINAL PURCHASER. 7. LIMITATION OF LIABILITY IF YOU CHOOSE TO USE THEM, ONLINE SERVICES OFFERED BY NEST LABS, INC., A US AFFILIATE OF NEST LABS, (“SERVICES”) PROVIDE YOU WITH INFORMATION (“PRODUCT INFORMATION”) REGARDING YOUR NEST PRODUCTS OR OTHER PERIPHERALS CONNECTED TO YOUR PRODUCTS (“PRODUCT PERIPHERALS”).
For online or phone support, visit nest.com/eu/support Recycling and disposal: visit nest.com/eu/recycle Dispose in accordance with applicable legislation. The WEEE symbol means that your Nest Thermostat must be disposed of separately from general household waste. When Nest Thermostat reaches its end of life, take it to a designated waste collection point in your area for safe disposal or recycling. By doing this, you’ll conserve natural resources, protect human health and help the environment.
064-00197-GB-A
