Hi all,
So have just spent the last few hours installing the Evohome controller, hot water pack and five HR92's.
I have no boiler relay, instead the "Heating" BDR91 controls a pair of V4043 zone valves (wired in parallel) and the "Hot Water" BDR91 controls a third V4043 for DHW. Condensing boiler is activated by the end switches.
Everything seems to be connected up ok. Hot water is working beautifully. However the relay for heating seems to have a bit of a mind of its own. It switches on and opens the CH zone valves even when I've set the controlled to "Heating Off", as shown below:
IMG_6033.jpg
If I push the button on the BDR91, it turns off and closes the zone valves and the boiler stops. But it shouldn't have been on in the first place! And it'll come on again a few minutes later (I don't know why!)
I'm not sure I have it configured correctly on the Evohome controller. When doing the guided configuration I said I have 2 zone valves controlling CH and DHW. It then asked me to bind the hot water sensor and both BDR91's in turn, all of which was successful.
However, I'm not sure I have this part set right -
IMG_6034.jpg
Should I have "Boiler Demand" set to "Boiler Relay", even though it's controlling the zone valve only?
Any advice appreciated!
Thanks,
Gareth
So have just spent the last few hours installing the Evohome controller, hot water pack and five HR92's.
I have no boiler relay, instead the "Heating" BDR91 controls a pair of V4043 zone valves (wired in parallel) and the "Hot Water" BDR91 controls a third V4043 for DHW. Condensing boiler is activated by the end switches.
Everything seems to be connected up ok. Hot water is working beautifully. However the relay for heating seems to have a bit of a mind of its own. It switches on and opens the CH zone valves even when I've set the controlled to "Heating Off", as shown below:
IMG_6033.jpg
If I push the button on the BDR91, it turns off and closes the zone valves and the boiler stops. But it shouldn't have been on in the first place! And it'll come on again a few minutes later (I don't know why!)
I'm not sure I have it configured correctly on the Evohome controller. When doing the guided configuration I said I have 2 zone valves controlling CH and DHW. It then asked me to bind the hot water sensor and both BDR91's in turn, all of which was successful.
However, I'm not sure I have this part set right -
IMG_6034.jpg
Should I have "Boiler Demand" set to "Boiler Relay", even though it's controlling the zone valve only?
Any advice appreciated!
Thanks,
Gareth
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