Hi
I was wondering if you could help me ?
I have a Vokera Mynute 20HE gas boiler which is controlled using a standard S Plan system ( 2 x 2 port motorised valves ) together with a programmable room thermostat for the central heating and a single channel programmer for the hot water. Each radiator has a TRV.
There is a 22mm automatic bypass valve ( ABV ) connected between the 22mm flow and return pipework.
The ABV is faulty in that it is stuck in the minimum setting – it can not be adjusted.
When the majority of the radiators shut down on their TRVs I can hear ( and feel ) hot water circuiting through this faulty ABV which causes the remaining radiators to stay cooler than they should be before these particular rooms are up to temperature.
Now I understand that there is an automatic bypass valve fitted inside the Vokera Mynute 20HE.
Can I therefore simply remove this faulty external valve, blanking off the associated pipework and rely on the automatic bypass valve in the boiler ?
I did speak to Vokera and they advised that I removed the external ABV as there is already an ABV inside the boiler, however they suggested that I fit a manual bypass in place of the external ABV so as to prevent boiler ( short ) cycling ?
I am confused - I would have thought that a manual bypass would cause a higher chance of short cycling ??
I was wondering if you could help me ?
I have a Vokera Mynute 20HE gas boiler which is controlled using a standard S Plan system ( 2 x 2 port motorised valves ) together with a programmable room thermostat for the central heating and a single channel programmer for the hot water. Each radiator has a TRV.
There is a 22mm automatic bypass valve ( ABV ) connected between the 22mm flow and return pipework.
The ABV is faulty in that it is stuck in the minimum setting – it can not be adjusted.
When the majority of the radiators shut down on their TRVs I can hear ( and feel ) hot water circuiting through this faulty ABV which causes the remaining radiators to stay cooler than they should be before these particular rooms are up to temperature.
Now I understand that there is an automatic bypass valve fitted inside the Vokera Mynute 20HE.
Can I therefore simply remove this faulty external valve, blanking off the associated pipework and rely on the automatic bypass valve in the boiler ?
I did speak to Vokera and they advised that I removed the external ABV as there is already an ABV inside the boiler, however they suggested that I fit a manual bypass in place of the external ABV so as to prevent boiler ( short ) cycling ?
I am confused - I would have thought that a manual bypass would cause a higher chance of short cycling ??