Have you made a decision re Existing Heating Zone Valves are you keeping them or not
Evohome in new build house with 2 zone and HW
Collapse
X
-
Well Looking at your wiring centre I would remove All wires going to Tp5000 and Tp9000 and red Plug and yellow plug
Also remove orange wire blue plug from terminal 10 and Grey wire Blue plug from Terminal 2 and place both in terminal 7 which is now a spare terminal this will remove HW Zone Valve Demand
Terminals 1&2 are Live and Terminals 3&4 are Neutral on your wiring centre
SO In Your New Boiler Demand BDR91 wire L to 1 and N to 3 and wire A to L internally in BDR or to Terminal 2 in wiring Centre and B to Terminal 10 which is SLB (Switched Live Boiler)
Your New HW BDR wire L to 1 and N to 3 and A to L internally or Terminal 2 in wiring centre and B to Terminal 8 which will put this BDR in series with orignal HW Stat and Terminal 9 will still Drive HW Valve
I am assuming Green Plug is original HW Stat and OT Protection and Terminals 1&2 and 3&4 are fed from a suitable fused spur but check all this and make sure to turn up old HW Stat to max as it will now only be used as safety backup to new BDR which is reacting to Evohome HW DemandLast edited by mylesm; 21 November 2017, 02:17 PM.
Comment
-
-
Fantastic, that couldnt be any easier, thank you.
So wire it like this heating wiring evohome.jpg
If i wire the honeywell tank stat in series with the original would this be correct heating wiring evohome 2.jpg
Thanks again for all your help
Comment
-
-
Originally posted by JamboV6 View PostHot water kit arrived today, so I'm guessing my second drawing is wrong and the evohome stat that is wired to the cs92a wirelessly transmits to the control panel that then tells the bdr91 to switch? Is that correct?
Comment
-
-
Originally posted by JamboV6 View PostFitted the system today, all went well, only thing left to do is patch up the holes in the wall from the upstairs room Stat. Big thanks to everyone for your input especially mylesm, your help really made the job easy.
Comment
-
-
So I have discovered an issue. Due to the warm weather the heating hasn't kicked in since monday night and as from tuesday ive had it set to eco just in case it snows over night between heatwaves and the house temp crashes.
Anyway the issue is, whenever the hot water comes on the rad in the utility ( the only one uncontrolled ) is getting scolding hot. What are my options?
1- Honeywell upping the number of zones and putting a HR92 on it.
2- Binding a BD91 to the 2 heating zone valves that have been disabled and linking them to the BD91 that is controlling the boiler so that the 2 zone valves switch with the boiler.
3- Just shut the rad down until the heating goes back on in the autumn?
cheers,
James
Comment
-
-
Originally posted by JamboV6 View PostSo I have discovered an issue. Due to the warm weather the heating hasn't kicked in since monday night and as from tuesday ive had it set to eco just in case it snows over night between heatwaves and the house temp crashes.
Anyway the issue is, whenever the hot water comes on the rad in the utility ( the only one uncontrolled ) is getting scolding hot. What are my options?
1- Honeywell upping the number of zones and putting a HR92 on it.
2- Binding a BD91 to the 2 heating zone valves that have been disabled and linking them to the BD91 that is controlling the boiler so that the 2 zone valves switch with the boiler.
3- Just shut the rad down until the heating goes back on in the autumn?
cheers,
James
Comment
-
Comment