I have a fully wired Y plan system, set out exactly as in the Evohome wiring guide:
Y plan wiring.JPG
What I am trying to get my head around is what changes need to be made to convert this to O/T boiler control, as opposed to BDR91. At present the CH demand BDR91 is remotely located from the boiler, and has been wired into the previously removed room thermostat. I have two controllers, one bound with the hot water kit setup and the second, just CH, bound to the BDR91 a boiler demand.
Having upgraded from Hometronic to Evohome, I am much impressed with the advances that Honeywell has made, and the system is operating like a dream.
Any guidance much appreciated as I am getting set to upgrade to an Intergas OV boiler.
Many thanks!
Y plan wiring.JPG
What I am trying to get my head around is what changes need to be made to convert this to O/T boiler control, as opposed to BDR91. At present the CH demand BDR91 is remotely located from the boiler, and has been wired into the previously removed room thermostat. I have two controllers, one bound with the hot water kit setup and the second, just CH, bound to the BDR91 a boiler demand.
Having upgraded from Hometronic to Evohome, I am much impressed with the advances that Honeywell has made, and the system is operating like a dream.
Any guidance much appreciated as I am getting set to upgrade to an Intergas OV boiler.
Many thanks!
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