For the hot water side of things, when there is no longer a demand for hot water, the boiler will continue to operate until it has replenished the heat bank. The nest should now have full control of your heating system with your original integral control set to the constantly on position.
From what I remember regarding the boiler, I believe it functions like a combi, but it also gives you the ability to control the inbuilt hot water storage vessel via your controller if you want to. If you don’t make any electrical connections to ST8 for the hot water control, then you still get...
The ST4 terminal block is where the supply to your nest should come from. The LR terminal is your switch return live from the nest to control the central heating. The ST8 terminal block is where your switch return live from the nest to control the hot water appears to go. Not really familiar...
some other photos of controller hopefully
https://Upload the image directly to the thread.com/rFwEtpU
https://Upload the image directly to the thread.com/rnBKImS
I am trying to find a replacement programmable thermostat to retrofit onto an existing installation, as the existing one has got a blank screen. Batteries have been replaced and various buttons/reset has been tried to no avail.
The original one is now obsolete. Can anyone recommend one that may...
Hi Lee , thanks for the reply, it wasn’t late I just hijacked your thread. My issue was trying to use the 1741+ and the Megger ev adapter and trying to test a project ev charger. I wasn’t having a noise issue.
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