Gas volume

[barronbathrooms]

I have won the contract for the installation of 3 central heating systems in a doctors surgery which spans across 3 separate buildings. All 3 boilers are to be fed from a u16 meter I have done all my gas calculation and will have 0.055272 meters cubed of gas in the system. On a domestic ticket I can only test and purge up-to 0.035 meters cubed. My question is can I split the pipe work by isolation valves and test separately so I can sign off the job with my domestic
ticket!

 

[Whn1]

From what I can remember I'm almost positive that you can.

 

[Barry98]

its a new one to me ill be honest but you would still have to do a TT including the meter so for me im going with a no , but i stand to be corrected

 

[archiedale]

is it a domestic dwelling !

 

[barronbathrooms]

No it's a doctors surgery

 

[Roger Welton]

As far as I know, and there is some conflicting info about this, commercial premises = commercial tickets regardless of what is being fitted (or that's what i was told when i did my acs last)

 

[aqualogic7]

commercial is size of boiler not where fitted

 

[SimonJohns]

The only difference between Dom and com is size of install.

For eg. 40kw Dom boiler. Domestic
47kw. Commercial

IV <0.0035 domestic
>0.0035 commercial

Meter u16 or smaller. Dom
U25 or bigger. Com

 

[GrahamM]

As far as I know, and there is some conflicting info about this, commercial premises = commercial tickets regardless of what is being fitted (or that's what i was told when i did my acs last)

There is no conflicting info in this respect that I am aware off.
As simon states diference between domestic and commercial it is to do with pipe size, meter and appliance size.
I have worked in Doctors surgery's, hairdressers and various shops on various domestic boilers.

 

[aqualogic7]

have just pulled out gas manual it says [when existing pipework is to be extended. The total volume of the new and existing sections has to be less than 0.035 m3. So therefore, you could not put a manifold in as you suggested. Might be possible to get someone with a commercial ticket to sign off gas pipe work.

 

[barronbathrooms]

Thanks aqua logic7, my friend has his commercial ticket do you think gas safe would let me add him to my registration? When it was corgi I had 2 friends on my registration even though they worked for different company's.

 

[aqualogic7]

sorry dont know best to ask to be safe

 

[SimonJohns]

You can have any eng on your ticket. It's just if the eng wants to be

I kno it's a stackable offence in big to have other registrations

 

[E4gas]

Thanks aqua logic7, my friend has his commercial ticket do you think gas safe would let me add him to my registration? When it was corgi I had 2 friends on my registration even though they worked for different company's.

I was told If you have any one else on your ticket, you have to inspect there work

 

[aqualogic7]

nothing to stop you inspecting there work. it is only who installs has to be listed for work they do

 

[kirkgas]

it is perfectly acceptable for you to get a commercial guy to fit seperate iso valves and test points and test the whole installation, then for you to work from each iso, as long as each leg you work on doesnt have an IV of more than 0.035m3, and remember if each leag has IV above 0.02m3 you need a different purge procedure

 

[gasmarc]

well I live and learn, I thought it was 60kw and below that was classed as domestic

 

[barronbathrooms]

Thanks for replies spoke to gas safe and my mate today he is going on my registration and will sign job off for me happy days!

 

[sparra1100]

well I live and learn, I thought it was 60kw and below that was classed as domestic

70 kw gasmarc plus think its u16 meter and below 35mm pipe

 

[SimonJohns]

well I live and learn, I thought it was 60kw and below that was classed as domestic

45kw per appliance. 70kw max install

 

[Roger Welton]

Or for 'comercial intent'

think overhead radiants and the like

 

[gasmarc]

45kw max appliance I dont think that is correct and if it is I think there is a few of us that are working out of scope :book:

 

[mike_s]

it's 70kw, no bigger than a u16, 35mm pipe and 0.035 installation volume. I've worked on a Buderus boiler in a hotel with a heat input of exactly 70kw. Spoke to Buderus and Gas Safe before I did and it was fine for me to work on with just my domestic tickets. Same goes for their Andrews water heaters as they were only 12kw even though a commercial design.

 

[kirkgas]

well I live and learn, I thought it was 60kw and below that was classed as domestic

70kw net now

 

[gasmarc]

Good stuff just got a call to look at a keston 55 tomorrow:frown2: