DIY Doctor

Fitting a DT90E Digital Room Thermostat

Postby Squiral » Fri Dec 17, 2010 1:23 pm

Hi All,

I am trying to fit a honeywell DT90E Room Thermostat.
I have removed my old thermostat which is a Sunvic TLX 2356

The wires I have are:
Brown - Live I guess
Blue - Neutral I guess

Now the DT90E has three ports, A, B, and C

Which wires do I put into A, B and C?

I have a gravity system bolier - Glow Worm Ultimate its quite old

Thanks in advance for any help.

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Simply Build It

Postby DMGAS » Sat Feb 26, 2011 2:05 pm

Live in A
Switch live in B

You will find that your old stat will be:

Brown = Live
Blue = Switch Live

All the best.
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