Install the app
How to install the app on iOS

Follow along with the video below to see how to install our site as a web app on your home screen.

Note: This feature may not be available in some browsers.

Welcome to the forum. Although you can post in any forum, the USA forum is here in case of local regs or laws

Aug 7, 2022
2
0
1
Romford
Member Type
DIY or Homeowner
Hello members,

Does anybody know how to wire a nest heat link to an Evinox HIU?

I know I need to replace the room module/thermostat with the nest controller and supply a 12v connection to the heat link. I also know to supply the heat link with a 240v connection for power from the HIU connection.

Looking at the instructions of the heat link I need to connect call-for-heat (Normally Open), common and satisfied (Normally Closed).

The problem I have is that unlike previous versions of the HIU my one has no obvious connections for the above. I have attached the electrical diagram to the HIU - can anyone decipher it at all?

I hoped I could simply use the wires that went to the thermostat, or would that be 'too easy' ?

Really hoping somebody has done this before.

Many thanks

Matt

Evinox Technical Diagram:
IMG_6061.jpg


Room Module / Thermostat:
Room module thermostat.jpg
 
Hi Shaun,
Bit worried about touching cables to test stuff - are you expecting the heating to come on if I did that? and what is the chance this could break something?
Regards
Matt
 

Official Sponsors of Plumbers Talk

Similar plumbing topics

We recommend City Plumbing Supplies, BES, and Plumbing Superstore for all plumbing supplies.