2 Google Nest Thermostats for 2 zones connected to Intergas Rapid 32kw

[Ant1]

Hi,

I would like to connect 2 Google Nest Thermostats for 2 zones to an Intergas Rapid 32kw (used as a combi boiler).

Below is the wiring for the Nest as provided by Google:

Page 63 of the Intergas Rapid 32kw manual shows that the Live and Neutral are on pins 2 and 4 of the X2 connector (refer to screenshot below).

Is this just a matter of connecting both Nest Heat Links as per above diagram and connect the Live and Neutral to pins 2 and 4 of the X2 connector on the Intergas boiler?

Is this really as simple as that?

 

[muggles]

Your Switch Live goes to Terminal 1 on X2

 

[Ant1]

Your Switch Live goes to Terminal 1 on X2

I added the terminal # of the boiler (in red) on the diagram below, is this what you mean?

 

[muggles]

Yep you've got it

 

[Ant1]

Brilliant Andrew, thanks a lot!

PS: regarding the pump inside the combi boiler, do terminal 7 & 8 really need to be connected to Live and Neutral?

Sorry for the silly question, but if I do so I assume the pump will be constantly turned on, shall this actually be Switch Live on terminal 7?

 

[muggles]

The boiler's PCB deals with switching the pump, you don't need to connect anything to that

 

[Ant1]

For completeness, the Intergas Rapid 32 boiler needs to be set to "C-ON".

The best wiring and explanations I found for a combi with 2 zones are from John Ward at https://www.flameport.com/electric/central_heating/combi_boiler_2_zones_230V.cs4, just need to connect the brown wires to terminal 2 of the Google Nest heatlinks instead of 1:

 

[Ant1]

I should have added that the jumper wire between terminals 6 and 7 of connector x4 (installed by default) needs to be removed.