couple of q's for the gas men!

[kay-jay]

as said in a previous post i'm on a mission to get gsr and i will no doubt have plenty of questions (some of them stupid) beginning now....

1) is it a legal requirement to register gas installs with gas safe in england?? (i know from a thread i read a while back that you don't in scotland)

2) a old conventional boiler needs replacing (4 pipe - hw f&r + heat f&r)
merchant claims no-one or hardly anyone produces these anymore and they are all 2 pipe) is this correct???

also, merchant says that instead of doing a full conversion to 2 pipe that you can just tee off the primary and link in to the hw circs just above the boiler, is this an accepted method?? he claims he was told this by manufacturer.


thanks in advance

kev

 

[Barry98]

first of ignore merchants , there sales people . gas work in the uk is reportable , boiler upgrades etc

 

[tamz]

1) You don't need to register with gas safe but it needs to be notified to building control. Doing it through gas safe just makes it easier.

2) An existing system that is piped as a 4 pipe would be gravity hot water and pumped heating. This is no longer an acceptable way to do it and the system needs upgrading to fully pumped so you only need 2 pipes. The exception being solid fuel.

The merchant is talking mince.

 

[kay-jay]

thx tamz you are a legend!

so my plan is convert to fully pumped system by removing existing hw circs and teeing into the heating flow between the pump and the motorised valve, with the tee going to cylinder coil. wiring in a extra 2 port valve to control the hw.

does this sound about right??

 

[tamz]

The feed and the expansion will come off the gravity revolves at the cylinder so you will need to move them to before the pump or change the system to a sealed system and fit an air vent where the expansion teed off.

There are other ways to do it but you need to know systems better.

 

[kay-jay]

cheerstamz

so move the pump or the f and e pipes and do as i said in previous and that should sort it?

 

[tamz]

Something like this

Changed to this

 

[quality]

Good old tamz right on the money.
Was gonna post similar but why bother when your on tap
Well done, I can`t do it that quick

 

[kay-jay]

so apart from missing out the ABV (bypass i presume?) and the AAV i was on the right track!

thanks. dave who i do the gas with tells me very little as he wants me to think things through myself. he just asks me questions and gives no answers i gotta keep figuring it out till i get it right!

cheers for the help!

Kev

 

[stevetheplumber]

tamz how did you do those drawings i never know how to draw things on here

 

[GQuigley67]

microsoft paint its pretty simple really

 

[tamz]

Ms paint and save it as a jpeg.