Gas Rating

[shaky]

Whats the best way round on this one going to do a landlord ticket monday and its an old peaples home each flat has there own boiler but all 32 flats are fed off one big bum gas meter. The problem is I can not do an operating pressure the boiler has a zero govener on them and gas rating might be a bit of a prob due to all being fed off one meter so what would be the best way round.

Meny thanks

 

[Mbear]

Sounds like a long day. Don't envy u one bit.

I can't think of anything other than turn all the appliances off in all the flats and just do one at a time, you'll also have to wait till they're all done before u can turn any of them on again.

Poor planning by original installer, seperate meters would have been ideal or even say 1meter covering 4 or 6 flats would be easier.

Best of luck mate, sounds a nitemare.( 32+ trips to the meter)

 

[heatman]

be careful if you only have ccn1 qual.(IGE/UP/1B)
your not ment to work on bigger than a u16 meter.
can work on pipes up to 35mm.
the installation volume must not be over 0.035 m3
as the IGE/UP/1B Edition 2 "Tightness testing and direct purging of small Natural Gas installations."

 

[wnjswozo]

hope you dont find a gas leak ,what a mare to try and trace.could do with a mate ,with walkie talkies,one at meter,one at flat

 

[Mbear]

hope you dont find a gas leak ,what a mare to try and trace.could do with a mate ,with walkie talkies,one at meter,one at flat

that's a decent idea, sounds horrendous to do by urself

 

[REDSAW]

IMO,it cant be done like that.

how are you going to get 32 people in at the same time to gain access, it aint going to happen and the warden wont let you in unless in emergency, been there.

there should be secondary meters to each flat or corridoor as access from only one primary meter in a place the size of this is dangerous to o.a.p's if not you need a cocn1 and at least 3 days work.

 

[Bernie2]

Agree with Redsaw 34.

Do they have down stream gas cocks for every flat.

If so, look up section in gas regs about testing to nearest downstream gas cock.

As to testing the whole system, well good fortune. It can be done but a lot depends on how big the pipe work and Primary meter is as to whether it is an industrial job or a domestic.

 

[Assessor Gas]

Simple, this is part of the engineers experience, and heres a new one for you. 1st you must do a G20 inlet operating pressure to ensure the gas has been sufficiently regulated down. You may know this as inlet working pressure. you are ideally looking for the appliance if nat gas design pressure of 20mb, but since the meter regulator is allowed +/- 2mb from 21. min 18. However check the manufacturers manual, if forced draught may accept 17mb inlet (ie a vaillant). You can't gas rate and so you must do a flue gas, this will confirm the air/gas mix is correct and complete combustion is there. Stripping it down you also show you if there is any blockage or dirt in the air and flueways inside the appliance and look for soot or scale on the heat exchange which may suggest a lean or rich mix. That way you are visibly confirming your flue gas readings. Ensure you work only on the appliance. Any work on the supply will not be permitted without a Commercial Licence. You should be able to test for tightness so long as an AECV is fitted in the property, using the G20 inlet test point again. remember no meter means permissable drop of 8mb on existing installation so long as pipework does not exceed 28mm. NOTE: ADVISE ONLY: I am not there so refer to your Manufacturers manual or get download it before going !! Keep your BS Book with you for reference too. Good luck, but if in doubt shout, or pass this one over to the commercial boys. (Remember - Advise Only)

 

[shaky]

Cheers for that assessor gas