Google Nest Learning Thermostat Installation Guide
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.
If the system has a hot water control circuit, connect it
to 4 (normally closed/satisfied), 5 (common), 6 (normally
open/call-for-heat) as needed.
If you have an OpenTherm boiler, connect its control
circuit to the OT1 and OT2 terminals.
→ See pages 20-25 for detailed wiring diagrams.
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| General | Details |
|---|---|
| Name | Google Nest Learning Thermostat Installation Guide |
| Make | |
| Language | English |
| Filetype | PDF (Download) |
| File size | 0.3 MB |
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