reillo g3 burner only runs with air intake pipe disconnected

[vernerbongo2]

Hi guys

my warmflow oil boiler has a reillo g3 burner with a balanced flue, year 95.

the problem I have is it won't run with the air intake pipe connected as it seems to choak the burner but it runs fine with the pipe disconnected.
I have replaced the blast pipe o ring but made no difference.

Any ideas?

Thanks

 

[cozzmic]

You've a problem with the balance flue. Flue gasses are mixing with the intake air so not enough oxygen to keep the flame stable. At worst the flue needs replaced if still available.

 

[vernerbongo2]

I've seen a friend with a similar boiler with flue gases going up a chimmney flue and his air intake coming in seperately straight through a wall from the outside.
Would that be possible to do, keep existing straight through the wall flue for ex-gases and another new vent for fresh air?

 

[cozzmic]

Warmflow don't do the seperate air intake part now but yes you could do that if you want but fit a grill and duct to flexi. Mind and blank off the old intake from the flue on the top of the boiler.