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Wiring Advice for Immermat Switch and Google Nest Gen 3 Thermostat

midigan
Community Member

Hi everyone,

 

I’m seeking advice on wiring my Immermat Flash Timer switch in conjunction with my Grant Euroflame Condensing Boiler House 70-90. Specifically, I’m connecting it to a Google Nest Gen 3 Thermostat with a Heat Link.

 

Wiring Details:

 

Immermat Flash Timer:

Brown (Live In)

Blue (Neutral In)

Live Out (Switched Live)

Neutral Out (Switched Neutral)

Google Nest Gen 3 Thermostat Heat Link:

L (Live)

N (Neutral)

2 (Call-for-Heat)

3 (Common)

I am trying to get heating to work but for somereason it does not switch on.

 

  • When I reconnect the Immermat to works perfectly.
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