Strange one

[neily01]

I would always tt to just to cover my own back from the old" it was ok before you came!" although must say I have not had it yet! Lucky old me.

 

[Reg Man]

If you are working for a Landlord, his duty extends to maintaining the gas installation pipe, so tightness test satisfies some of his duty. Gas installation pipe in cavity wall? as Tamz says AR even with out a leak, a direct contravention of the gas regulations.

 

[Masood]

All other engineers had only completed boiler tightness which passed

What do you mean by this? How would you test just the boiler for tightness? Genuine question - never heard of this before!

 

[Reg Man]

Inlet test nipple after the appliance isolation valve?

 

[Masood]

Inlet test nipple after the appliance isolation valve?

What would that prove though? Am I missing something here?

 

[leethegasman]

It can only prove there is no leak after the service valve and that the boiler gas valve is shutting off.same as if you do a TT on whole system.i get the impression when I talk to other installers that the test gauge stays in the bag. I no BG don't TT system on service and don't think they TT after service valve.

 

[anz]

What do you mean by this? How would you test just the boiler for tightness? Genuine question - never heard of this before!

Turn the gas off at the service valve.

Put the Gauge on the Inlet test point on the gas valve .

Open the service valve, and close when gauge reads 20mb.

Normal tightness test procedure, observe drop, 2 mins etc.

This checks for tightness at the boiler.

 

[anz]

Not a requirement for tt on a service but I thought it was for a l/lords, but when I sat refresher in jan they said it wasn't but you would have to have a very good reason not to. Don't know why you wouldn't on a l/lords,should really be law. can't think of a reason why not?

Not compulsory on a Landlords check, confirmed in a telephone call made to Gas Safe a couple of years ago.

I think it is good practice to do one though and would recommend it.

 

[Masood]

Turn the gas off at the service valve.

Put the Gauge on the Inlet test point on the gas valve .

Open the service valve, and close when gauge reads 20mb.

Normal tightness test procedure, observe drop, 2 mins etc.

This checks for tightness at the boiler.

Got it, thanks - testing boiler internal gas pipework, basically. However, if there was a leak inside the boiler, a normal TT would show it up anyway, so this is to rule the boiler out as the likely culprit of a large pressure drop. You could do that by repeating the TT with the boiler service valve closed, no?

 

[Toxic Ted]

i always tt on a service.....they are my custards and i try to look after them. I would probably feel different if i did HA one after the other all day.