Vaillant gas pressures

[kneedeep]

Hi,
During commissioning a Vaillant Ecotec Plus 837 boiler I measured the gas pressures which were 18 mbar at the meter and 14 mbar at the boiler gas valve, with the boiler at max load. The Vaillant manual says that the minimum gas pressures should be 19 mbar at the meter, and 15 mbar at the gas valve.

Questions:

1. Is 14 mbar at the boiler OK, or should I upsize the pipework from existing 22mm to 28mm?

2. Should I notify the gas company that the pressure when the gas is flowing is below 19 mbar (as suggested in Vaillant manual) The standing pressure at the meter is 28 mbar.

Cheers.

 

[Gasguru]

You registered? If so should be in the CC although you shouldn't need to ask these questions at all...isn't ACS wonderful

 

[5TIMES]

you need to speak to national grid, but you should know this!

also you need to put the gas supply under worse case scenario ie boiler cooker fire when testing at the gas meter.

 

[bengasman]

... should I upsize the pipework from existing 22mm to 28mm?

No, you should get a pro to do that.

 

[kevplumb]

you need to speak to national grid, but you should know this!

he needs to speak to his local ACS centre

 

[bengasman]

The op has not come back with further questions. That shows he has found the solution himself. That in turn proves that he actually is a proper rgi.
You guys owe him an apology.

 

[kevplumb]

The op has not come back with further questions. That shows he has found the solution himself. That in turn proves that he actually is a proper rgi.
You guys owe him an apology.

 

[penfold46]

www.diynot.com/forums/viewtopic.php?p=1692160#1692160

We have a Vailliant expert! Bunnyman should watch his back.

 

[Gasguru]

The op has not come back with further questions. That shows he has found the solution himself. That in turn proves that he actually is a proper rgi.
You guys owe him an apology.

Do what I'll apologise to no one. If he's registered then I'd have him out the industry double quick but I must remind myself that these half wits provide me with plenty of remedial work

 

[doitall]

Very true Gasguru, but you have to remember these half wits are the future of our industry.





God forbid

 

[bengasman]

Very true Gasguru, but you have to remember these half wits are the future of our industry.

I came to the same conclusion, and decided to change my business completely. I had build up a good name for high end installations/replacements, but am leaving that side for what it is. My advertising and website are entirely geared towards repairs/remedial, as these numb-nuts can't undercut me in that area.

 

[Bunnyman]

Thanks penfold46 I gonna get some more training lol

Untitled

• Bunnyman
• 26 Mar 2010
• 499