We have just got rid of our old oil boiler and replaced it with a Panasonic ASHP.
There is a buffer tank fo the heating which comprises Honeywell UFH HCCR80 and three radiators all with Honeywell actuactors. The radiators are fed via a pump which is controlled by a BDR acting as a boiler relay. The UHF has its own pump which comes on when any UHF requires heat. The problem is that when the UFH requires heat and the radiators do not, both pumps switch on. I am guessing this is because the Evohome controller sends a request for heat for an UFH zone and this switches the pump on on the radiator circuit. Is there anyway to tell the Evohome not to request the boiler for an UHF zone heat request? or is there any other way to prevent both pumps from working for just UFH requests?
Cheers
There is a buffer tank fo the heating which comprises Honeywell UFH HCCR80 and three radiators all with Honeywell actuactors. The radiators are fed via a pump which is controlled by a BDR acting as a boiler relay. The UHF has its own pump which comes on when any UHF requires heat. The problem is that when the UFH requires heat and the radiators do not, both pumps switch on. I am guessing this is because the Evohome controller sends a request for heat for an UFH zone and this switches the pump on on the radiator circuit. Is there anyway to tell the Evohome not to request the boiler for an UHF zone heat request? or is there any other way to prevent both pumps from working for just UFH requests?
Cheers
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