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Replies: 21
Views: 8,614
Posted By nawogcmdivad

Update on this. I called a boiler guy, he...

Update on this.
I called a boiler guy, he reckoned a boiler servicing would fix the problem. He came, he serviced, he changed: the nozzle, fire valve, oil hose, photo cell.
There is no doubt all...
Replies: 21
Views: 8,614
Posted By nawogcmdivad

The exact model is Grant EuroFlame 50/90...

The exact model is Grant EuroFlame 50/90 Boilerhouse.
The small attic tank has a ball **** refill system. The overflow from the heating dumps into this tank also (generally causing it to spew water...
Replies: 21
Views: 8,614
Posted By nawogcmdivad

There is a small tank in the attic which keeps...

There is a small tank in the attic which keeps the circulating water topped up, there is no pressure gauge in the system. The boiler itself (50/90 boiler-house model) has no expansion vessel and I...
Replies: 21
Views: 8,614
Posted By nawogcmdivad

Boiler is 8yrs old. It burns Kerosene Oil ...

Boiler is 8yrs old.
It burns Kerosene Oil
Last service was (embarrassingly) ~6yrs ago.
Replies: 21
Views: 8,614
Posted By nawogcmdivad

OK, so it IS a legitimate way to configure a...

OK, so it IS a legitimate way to configure a system. Seems crazy to me that a call for heat can turn on a pump regardless of whether the boiler is firing or not.....unless it assumes the boiler will...
Replies: 21
Views: 8,614
Posted By nawogcmdivad

The quality of some of the diagrams in that...

The quality of some of the diagrams in that manual is very poor.
I've put a manual for a very similar boiler here:...
Replies: 21
Views: 8,614
Posted By nawogcmdivad

Hi Guys, thanks for all the responses. Working...

Hi Guys, thanks for all the responses.
Working on the pics, need to charge a camera.
Is there an expansion vessel on a non-sealed system?
Yes I am in Ireland (but water still boils at 100C here...
Replies: 21
Views: 8,614
Posted By nawogcmdivad

We only noticed because the limit stat kicked in...

We only noticed because the limit stat kicked in and stopped the heating working.
But now that I piece it together there was occasional unexplained water near where the expansion tank overflow exits...
Replies: 21
Views: 8,614
Posted By nawogcmdivad

No pressure gauge in the system, its not sealed,...

No pressure gauge in the system, its not sealed, so don't know the pressure.
Limit stat is factory set to ~110C.
Replies: 21
Views: 8,614
Posted By nawogcmdivad

Boiler Overheat

My Grant Euroflame boiler overheated, spewed water from the system expansion tank and the limit stat on the boiler kicked in. Its a fully pumped system with circuits for upstairs heating, downstairs...
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