Baxi 105 e - Hot water is also warming radiators

[ianmcd]

What exactly does the bypass do ?

It simply allows a path within the boiler for the water to circulate, not all boilers have an internal by-pass

 

[micpwelsh]

It simply allows a path within the boiler for the water to circulate, not all boilers have an internal by-pass

Sounds technical

 

[AndyJay2019]

Cough cough, it's me again
Ok I get it now - well almost.
So watching the video helped (apologies, I did initially rush into it a bit).
I see how it all fits together now and I'll be getting back in there as soon a possible.
The only slight confusion is over that bypass pipe at the back and the non return valve servicing.
Can you really get to this without taking the whole conversion valve out and on the bench?
How does the bypass pipe fit into the main body? looks like it's just held in place by the sprint clip?

Thanks for bearing with me
Andy

 

[Gasguru]

In heating mode only it allows a minimum flowrate through the heat exchanger regardless of the TRVs shutting down radiators or using turning them all off.

You don't normally need to remove the complete diverter...just the front gland section and the spindles/discs behind it.
The diverter section right at the back can be left in place and doesn't tend to be a problem.

 

[AndyJay2019]

Thank you Gasguru
I think I'm there now
Should be able to do this tomorrow.

Sincere thanks for your help.

 

[micpwelsh]

Thank you Gasguru
I think I'm there now
Should be able to do this tomorrow.

Sincere thanks for your help.

Good luck

 

[AndyJay2019]

Hi all...
Just wanted to update on the repair.
It all went well and the radiators are no longer heating up when the hot water is used
There was a scary moment when I refilled the boiler and heard several loud bangs. I was expecting water to spurt out everywhere, but no, all is well.
A big thank you for everyone's help and patience.
Andy