Google Nest Learning Thermostat Installation Guide
General specs
Heat Link
Terminal
Specification
Notes
L
230 V AC/50 Hz mains voltage
230 V AC/50 Hz mains voltage
Heating relay normally closed/satisfied
Heating relay common
Live wire
N
Neutral wire
1
3 A resistive, 1 A inductive
3 A resistive, 1A inductive
3 A resistive, 1A inductive
3 A resistive, 1A inductive
3 A resistive, 1A inductive
3 A resistive, 1A inductive
42 V DC max.
2
3
Heating relay normally open/call for heat
Hot water relay normally closed/satisfied
Hot water relay common
4
5
6
Hot water relay normally open/call for heat
OpenTherm wire1
OT1
OT2
OpenTherm wire 2
42 V DC max.
If using T1 and T2, connect to earth
12 V DC power output to Nest
12 V DC power output to Nest
T1
T2
Note: T1 and T2 have no polarity at the thermostat.
Maximum cable thickness = 2 mm²
AC power adaptor
Input: 100-240 V AC, 50/60 Hz, 0.2 A | Output: 5 V DC, 1.4 A
19
| General | Details |
|---|---|
| Name | Google Nest Learning Thermostat Installation Guide |
| Make | |
| Language | English |
| Filetype | PDF (Download) |
| File size | 0.3 MB |
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