D
DAVHM
Hi Guys,
I serviced my boiler (Worcester Dansmoor 15/19 CF/FL with Riello RDB1 burner) last month and everything got a clean bill of health. At least that was what I thought. When the burner is going full blast I have no problem. But when it stops (or when I switch off the boiler) I start getting serious fume smell.
What I think is happening is that when the boiler is switched off the fume inside the chamber — no longer driven up the flue by the air pump — lingers on in the fire chamber and then gradually leaks back out from around the blast head due to the poor seal. I believe the gap between the blast head and the hole in the boiler is too big (4 - 5 mm) to be sealed by a simple gasket currently fitted. So I am wondering how I could seal the burner head properly to stop the fume leak. I have used fireproof rope and also rubber rings in the past, but none of them were satisfactory. The guy who serviced the boiler used the gasket and was convinced that would do the job. But I now know that the gasket was a waste of time.
The boiler hole diameter is 89mm. The blast head on the Riello RDB1 is 85 (I think).
I would be very grateful for any suggestions.
Dave
I serviced my boiler (Worcester Dansmoor 15/19 CF/FL with Riello RDB1 burner) last month and everything got a clean bill of health. At least that was what I thought. When the burner is going full blast I have no problem. But when it stops (or when I switch off the boiler) I start getting serious fume smell.
What I think is happening is that when the boiler is switched off the fume inside the chamber — no longer driven up the flue by the air pump — lingers on in the fire chamber and then gradually leaks back out from around the blast head due to the poor seal. I believe the gap between the blast head and the hole in the boiler is too big (4 - 5 mm) to be sealed by a simple gasket currently fitted. So I am wondering how I could seal the burner head properly to stop the fume leak. I have used fireproof rope and also rubber rings in the past, but none of them were satisfactory. The guy who serviced the boiler used the gasket and was convinced that would do the job. But I now know that the gasket was a waste of time.
The boiler hole diameter is 89mm. The blast head on the Riello RDB1 is 85 (I think).
I would be very grateful for any suggestions.
Dave