Hi
I have an Evohome which maintains the set temperature and so when it powers the boiler most of the radiator valves are closed with one or two slightly open, basically just "topping up" rather than heating fully.
This means that the automatic bypass valve (ABV) has to open as well.
Now, rather than use the ABV I could leave say the bathroom radiator fully open instead.
I would appreciate it if someone could let me know the pros and cons of each approach and what is best practice.
My (probably incorrect) ramblings so far are
If ABV used then, whilst most radiator valves closed and a couple very slightly open, water is flowing and it is returning the water back to the boiler at much the same temperature as it left (as basically just 50m of copper pipe run) and so the boiler may modulate down. This means that the radiators that do require heating may not get it and if they do then potentially at a lower temperature. Also those further on from where the ABV is fitted may miss out as the water is diverted?
If ABV is not used then the bathroom radiator will be taking heat even when not required such as when the hot water cylinder is heating or there has been a large step jump in desired temperature such as in the morning.
Thanks
Colin
I have an Evohome which maintains the set temperature and so when it powers the boiler most of the radiator valves are closed with one or two slightly open, basically just "topping up" rather than heating fully.
This means that the automatic bypass valve (ABV) has to open as well.
Now, rather than use the ABV I could leave say the bathroom radiator fully open instead.
I would appreciate it if someone could let me know the pros and cons of each approach and what is best practice.
My (probably incorrect) ramblings so far are
If ABV used then, whilst most radiator valves closed and a couple very slightly open, water is flowing and it is returning the water back to the boiler at much the same temperature as it left (as basically just 50m of copper pipe run) and so the boiler may modulate down. This means that the radiators that do require heating may not get it and if they do then potentially at a lower temperature. Also those further on from where the ABV is fitted may miss out as the water is diverted?
If ABV is not used then the bathroom radiator will be taking heat even when not required such as when the hot water cylinder is heating or there has been a large step jump in desired temperature such as in the morning.
Thanks
Colin