Wow, you have certainly fully evaluated my system.
What would be the benefit from attempting to remove 2 valve PSU from the system entirely?
FYI - The sytem has been working 1.5 days and I've had no issues with it.
I'm not sure what "issues" I would have or should be looking out for the...
Hi @RandomGrinch ,
Mission complete.
Two nests installed, upstairs using the existing wiring to the old thermostat and downstairs is on a stand.
Thanks for all your help with this, I am really pleased with the outcome.
Below is a photo of the wiring system PCB as promised.
tantrum...
Thanks for your help it's been really helpful and apprecitated.
I will report back when I have (hopefully) installed one nest and I'll provide you with a photo of the PCB.
Hi,
I performed the test as detailed:
1. Wired both systems 0v to RH - heating fired up
2. Removed upstairs connection - heating stopped upstairs, continue to run downstairs and boiler still on.
3. Removed downstairs connection too - heating stopped and boiler stopped heating up the water.
I...
Thanks for the further information.
I did a test on the wiring system by connecting RH to the +V and the boiler didn't wire up.
I swapped the wire to 0V as below and the heating came on and the boiler was running.
This confirms that your proposed method above is the way to wire a Nest 3rd...
Hi @RandomGrinch ,
Thanks for your reply.
Apologies for the further questions as I try to understand the detail.
To clarify, a test would be:
Remove the wiring from a thermostat at the wiring system and place a wire between the '5V and RH' on the board, as per the sketch below?
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The outcome...
Hi,
I am planning on replacing the two thermostats in my new build house that control the dual zone central heating. The thermostats are ESI ESRTP6C are connected to a wiring system that is connected to the combi boiler and two valves.
The thermostats have the following wires connected: +5V...