just disconnected a boiler.

[Mike Jackson]

And I've nipped home to get the camera so I can get some pictures for the report. I'll also be filling in a RIDDOR notice.

60,000 BTU/hr Open flued boiler in a compartment. Ventilation from the kitchen has been plastered over and new ventilation has been provided by two lengths of copex dropped into the cupboard at high and low level. This ventilation appears woefully inadequate and I could only find one length of copex emerging in the roof space and extending through the roof. Further investigation revealed that just below ceiling level an inline extract fan had been fitted turning the compartment into some sort of balanced compartment. The fan has been rigged to turn on when the burner fires but without any sort of proving switch.

Ingenious but not at all safe. I've classified it as two ARs on the ventilation and Ided the installation. The customer has just moved in and has been given a record that the boiler was serviced by another local engineer last November. When they moved in they rang the engineer who says that he hasn't been near the boiler for years so some one is telling porkies. They have spoken to their solicitor who has asked for a full report on the installation and will possibly be pursuing the vendor for forging the service record.

Looks like the smelly stuff is going to hit the fan big time on this one so I'm doing some serious arse covering and it will be strictly by the book.

Pictures to follow later.

 

[dave1]

Oooh interesting look forward to the pics.

 

[Barry98]

Yes be some good pics

 

[mountainman]

This job could be one for the gas mag hall of fame.

 

[Mike Jackson]

I'll be forwarding the pics on to the mag. The previous owner must have been a bit of a whizz to sort it all out but without any idea of the actual requirements.

 

[northcarr]

don't you just hate it when you turn up to find a blumin nightmare hope you get paid for all the trouble,and just make sure you cover your own back.:uhoh2:

 

[EPH]

So the flue is ok it's the ventilation all to cock with an extract fan pulling air in?

 

[Mike Jackson]

Yes, almost like someone has tried to create a balanced compartment. Pictures are uploading to Flickr at the moment.

 

[Mike Jackson]

Here's the pics.

This is the view that I got when I opened the cupboard


CQ9R0225 by Mike Jackson1, on Flickr

The instructions showed the boiler needing 212 sq cm low and 106 high from outside. 110mm soil gives around 80 so looking bad to start with, too low even for the high level vent.

Looking up inside the cupboard revealed.


CQ9R0229 by Mike Jackson1, on Flickr

So at least it's got high and low level but woefully inadequate.

I then noticed a wire coming from the longer section.


CQ9R0228 by Mike Jackson1, on Flickr

Closer inspection revealed this to be an inline duct fan which clicked on when the burner ignited. Somehow the fan has been connected so that when the boiler stat calls for heat it turns on. It was obvious that there was no proving switch because the burner lit and I then heard the fan spin up to speed. I didn't manage to work out what the bit of pump screwed to the wall was for.

Checking in the roof space revealed the kopex connected to the fan running to a vent slate.


CQ9R0235 by Mike Jackson1, on Flickr

Whilst closer inspection showed the other section connected to some rectangular ducting.


CQ9R0239 by Mike Jackson1, on Flickr


CQ9R0237 by Mike Jackson1, on Flickr


CQ9R0240 by Mike Jackson1, on Flickr

Looking outside showed a very restricted inlet for the roof vent.


CQ9R0219 by Mike Jackson1, on Flickr

The other vent was a bit better.


CQ9R0249 by Mike Jackson1, on Flickr

All in all a very imaginative solution to the problem of the blocked compartment vents but with none of the necessary safeguards.

 

[quality]

That's a classic case of a little knowledge is dangerous.
well done for doin a proper job by the way