I know why a bypass is normally used for a boiler overrun BUT
I was thinking that I could remove the valve from the central heating so instead of going through the bypass the pump will continue to pump water through the radiators until the boiler is cool enough to shut off the pump.
Reasons
1. Water always flows through the bypass albeit not very much, when the heating is on as the bypass is always open obviously
2. When the timer goes off, the pump continues for quite a long time (varies on how much I open the bypass) and I can manually avoid this by opening up the valve in the heating system (simple electrical stop valve, not a multiport).
The theory is that
a. timer goes off - at same time boiler stops
b. pump continues to pump through heating system until water to boiler is cool enough
c. when boiler is cool enough pump switches off.
It seems a waste of gas to have the bypass running all the time even though it is a small amount, when I could have all the heat going to the rads. By experimentation, I can close the bypass valve balancing the time taken to shut down with the heat lost.
Anyone any thoughts ?
Oh - I realise that when the gas stops, the rads will get cooler quicker as the water will still pump through until the boiler temperature is low enough to shut off the pump.
Cheers
I was thinking that I could remove the valve from the central heating so instead of going through the bypass the pump will continue to pump water through the radiators until the boiler is cool enough to shut off the pump.
Reasons
1. Water always flows through the bypass albeit not very much, when the heating is on as the bypass is always open obviously
2. When the timer goes off, the pump continues for quite a long time (varies on how much I open the bypass) and I can manually avoid this by opening up the valve in the heating system (simple electrical stop valve, not a multiport).
The theory is that
a. timer goes off - at same time boiler stops
b. pump continues to pump through heating system until water to boiler is cool enough
c. when boiler is cool enough pump switches off.
It seems a waste of gas to have the bypass running all the time even though it is a small amount, when I could have all the heat going to the rads. By experimentation, I can close the bypass valve balancing the time taken to shut down with the heat lost.
Anyone any thoughts ?
Oh - I realise that when the gas stops, the rads will get cooler quicker as the water will still pump through until the boiler temperature is low enough to shut off the pump.
Cheers