Heatmiser Touch

[stephenishy]

Hi all need to remove Honeywell room stat and wire Heatmiser Touch as a room statI have 4 wires through wall White, Brown, Green an Blue(not connected in terminal block) A BIG Thank you .

 

[James]

It may or may not be possible with the wires that exist.
is it 230v control voltage?

 

[stephenishy]

It may or may not be possible with the wires that exist.
is it 230v control voltage?

Hi James Thank you. Yes i believe so . I thought i had a honeywell stat but the one on the wall at the moment is a HORTSMAN digital room stat.

 

[James]

It is not something that can easily be described over the internet.
however.
if you have a permanent live and a neutral then you are able to power your new thermostat.
that would use 2 of the 3 cores you have available.

If the boiler uses a 230v signal to provide heat then you can use a link from perm live to the relay and the 3rd core to return the signal to the boiler.

however, if the boiler is not using a 230v return from the thermostat, you are likely to destroy the boiler control board.

 

[stephenishy]

It is not something that can easily be described over the internet.
however.
if you have a permanent live and a neutral then you are able to power your new thermostat.
that would use 2 of the 3 cores you have available.

If the boiler uses a 230v signal to provide heat then you can use a link from perm live to the relay and the 3rd core to return the signal to the boiler.

however, if the boiler is not using a 230v return from the thermostat, you are likely to destroy the boiler control board.

Thank you. Is it possible to say where the permanent live would go on the Hertmister would it be to live or A1 or A2

 

[brianmoooore]

The first thing you need to do is to establish what the existing wires are. If they are permanent live, switched live to boiler, neutral and earth, then you can fit the new stat, with a link between permanent live and A1.