Water gushing from smokebox ?

[Richie]

Hi all

Please help.

I have just installed a RWM Janet boiler into my Mamod and have a Dreamsteam burner which worked flawlesly when I had the old Mamod boiler.

Unfortunately with the new boiler it takes over 12 to 13 mins to raise steam and when I engage forward and open the regulator a large dump of water comes from out underneathe the smoke box !

My assumption is that in the 12 to 13 mins it takes to raise steam excess water vapour/steam is collecting somewhere and builds up until I engage forwards, it will then drop steam pressure and stop going forwards. I have a RWM Janet burner on order as I think it may be more suitable for the boiler its trying to heat.

Can anyone shed light on this please as I'm baffled.

Cheers

Richie

[MRail]

Well, Richie, it's certainly baffling!
There's really nowhere for water/steam to collect, other than the top of the boiler.
Is it over filled?
Otherwise it's possible the steam pipe has become detached from the reverser block, under the smokebox.

[Richie]

Thanks for the suggestions Rob, these are things I have checked, steam pipes secure and I have removed over 30ml of water from a full boiler so its not over full. Odd !

[Jimmyb]

I have new Fowler (Factory built), and when pressure is raised, on opening the regulator I get water from below the smoke box, however once it's run (slowly) for about 30 cms, the water stops. As mine has done this since new, I thought it normal behaviour, and just condensation from the motion being ejected - it would seem not.

[TonyW]

I thought it normal behaviour...

It is.