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Caterham

Member Since: 06 Nov 2008
Location: Birmingham
Posts: 6300

2011 Defender 110 Puma 2.4 XS CSW Stornoway Grey

anyone on here familiar with the gas regs?

here's the scenario.
old building with gas pipe running from basement up a riser located in the middle of the building to the roof.

new boilers require a new / larger gas pipe........
only the riser needs to be vented as basement and top to atmosphere !!!!

how do you vent the base of the riser to atmosphere when it both at basement level and in the centre of the building?......or is there a get out of jail clause?

5th Aug 2022 3:54pm

diesel_jim

Member Since: 13 Oct 2008
Location: hiding
Posts: 6093

6" waste pipe going to "outside"?

I'll grab me coat and stick to sparky things....

5th Aug 2022 4:36pm

Caterham

Member Since: 06 Nov 2008
Location: Birmingham
Posts: 6300

think you might be onto something - hopefully there's an easier solution but not sure what it is?

5th Aug 2022 4:52pm

Rashers

Member Since: 21 Jun 2015
Location: Norfolk
Posts: 3507

2014 Defender 110 Puma 2.2 USW Corris Grey

Maybe some form of forced ventilation?

I doubt very much there is a get out of jail clause with Gas. It's pretty tightly prescribed.

I am also an electrical engineer, not a Gas fitter but it is always a difficult conversation with a customer when what they have that works has to be changed to comply with current regulations when they want something changed.

5th Aug 2022 6:53pm

bear100

Member Since: 22 Mar 2010
Location: South Wales
Posts: 1917

2010 Defender 110 Puma 2.4 USW Santorini Black

Venting a void containing a gas supply is only to prevent a gas build up that is permissible from a tightness test with appliances connected.
Multiply the width X height of the void (length is not important)
Eg void is 300 x 300mm
0.3 x 0.3 = 0.09m square, no issues having any size larger.
Commercial gas has a different set of regs. 2016 Range Rover Autobiography 4.4 TDV8
2010 110 XS Utility 2.4TDCI
2010 Range Rover Sport TDV8 (gone)
2007 Discovery HSE TDV6 (gone)
1993 110 csw 200 tdi (gone)
1994 90 HT 300 tdi (gone)
1994 discovery 300tdi (gone)
90 hybrid 3.5 v8 (gone)
Range rover bobtail 3.5 v8 (gone)

5th Aug 2022 9:34pm

Dinnu

Member Since: 24 Dec 2019
Location: Lija
Posts: 3418

2012 Defender 90 Puma 2.2 CSW Santorini Black

Gas by itself does not explode, but when you vent it, it gives that oxygen needed to do

Not familiar with gas regulations, but check if fitting gas detectors could be a solution.
Have a detector installed on my boat, and the surveyor waived that the gas bottle is located inside the boat rather than outside. 1988 90 Hard Top, 19J Diesel Turbo, Shire Blue - Restoration ongoing
2012 90 CSW, 2.2TDCI, Santorini Black

6th Aug 2022 5:27am

the gamekeeper

Member Since: 01 Jan 2010
Location: Surrey
Posts: 96

2007 Defender 110 Puma 2.4 DCPU Tonga Green

If the new pipe is installed in a duct the pipe would be vented at both ends, there’s also trac pipe cc product which is a pipe within an pipe system. But still check with your Gas Safe installer

6th Aug 2022 6:06am

Caterham

Member Since: 06 Nov 2008
Location: Birmingham
Posts: 6300

thanks guys - and yes had thought about gas detection

looking into that option.

6th Aug 2022 7:24am

bear100

Member Since: 22 Mar 2010
Location: South Wales
Posts: 1917

LPG has a different set of rules

No matter what pipe method you use the ventilation regs apply 2016 Range Rover Autobiography 4.4 TDV8
2010 110 XS Utility 2.4TDCI
2010 Range Rover Sport TDV8 (gone)
2007 Discovery HSE TDV6 (gone)
1993 110 csw 200 tdi (gone)
1994 90 HT 300 tdi (gone)
1994 discovery 300tdi (gone)
90 hybrid 3.5 v8 (gone)
Range rover bobtail 3.5 v8 (gone)

6th Aug 2022 8:55am

Caterham

Member Since: 06 Nov 2008
Location: Birmingham
Posts: 6300

even with gas detection?

6th Aug 2022 10:21am

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