Hello,
We moved to a new house and I replaced the faulty CH/HW time controller with an Evohome setup and HR92 on most radiators. The system is a Y plan and i have two BDR91 relays controlling the zone valve as i also have the hot water kit. I currently have it configured with no boiler demand relay. Once the system is up to temperature i get a lot of short 'on' cycles, sometimes so short the boiler is only on for a few seconds. I understand why this happening, but wonder if it would be better if I added a boiler demand relay so i can set the max. number of cycles and minimum on time?
Anyone done this?
thanks,
Richard.
We moved to a new house and I replaced the faulty CH/HW time controller with an Evohome setup and HR92 on most radiators. The system is a Y plan and i have two BDR91 relays controlling the zone valve as i also have the hot water kit. I currently have it configured with no boiler demand relay. Once the system is up to temperature i get a lot of short 'on' cycles, sometimes so short the boiler is only on for a few seconds. I understand why this happening, but wonder if it would be better if I added a boiler demand relay so i can set the max. number of cycles and minimum on time?
Anyone done this?
thanks,
Richard.
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