first boiler job

[eddiebrown424]

Hi guys fitting my first boiler (gas safe) and sooooo silly question time. BTW only registered through a company yesterday pm. With regards to air vents on boiler pipework with a pressurised system.... are they necessary. the plumber I worked for alwys put them in but with the layout of the pipe work unless i run the flow and return behind the boiler (worcester greenstar 15ri heat only) it will mean a 750mm dead leg to get the aav above the boiler.

thanks

eddie

 

[lame plumber]

I probably shouldn't answer the mood I'm in 🙂

 

[Deleted member 7121]

Bad day in the office Lame ?

 

[eddiebrown424]

ahhhh your gonna say if i dont know the answer to the question i shouldnt be fitting a boiler huh. PS didn't have a brill day either hope it werent too bad.

 

[lame plumber]

best place vents at highest point of the system, and its been shyte for 3 days

 

[IDCHAPPY]

Yip, high points of the heating system ans put a set of valves on before them so the can be completely isolated.

 

[eddiebrown424]

sorry about that man. The thing is if i pipe up with the flow and return at the bottom of the boiler and tee off and continue up to an aav i thought this would be a dead leg (and look ****). Guess it would look bettr and be more practical if i took the pipes behind the boiler and teed to the AAVs at highlevel. what do you think? hope it gets better tommorrow.

 

[lame plumber]

use an intergas, aav can go on top of the boiler

 

[eddiebrown424]

oooh sounds interesting....... cheers as i said hope it gets better for you.

 

[AWheating]

AAV's should go by pump, thumb vents at high points In pipe runs. Hope the boiler goes well.

 

[Dotty]

Why do you want to stick vents on? Sounds of it your boiler is higher than the pipework. It has a vent built in.

 

[eddiebrown424]

Hi A wheating and thanks. Hi croppie its just that the boiler is the highest point but if i pipe it from above the pipework is higher than theboiler. So are you saying that if the boiler is the highest point in the system and has an air vent (do they all ?) thereis no point putting aavs on the system its pressurised nyway so less chance of drawing air in....

Thanks yaall for the advice love this place

Eddie

 

[kris]

Depending on where your rads are positioned they are your manual AV , you only need aav IF the pipe work IS going higher than boiler n rads, AAV on coil at cyl ,

 

[IDCHAPPY]

Or if it goalposts up into the loft,along and then drops to feed a radiator for any reason 🙂

 

[Vee]

Don't put AAV's on anywhere else if there is on on boiler. Thumbvents on high points in pipework for initial fill is all you need. :bow:

 

[R.Oak]

If the boiler is the highest point in the system you shouldn't need one surely?? It will have an internal AAV which should suffice if its the highest point. Cutting a T and running new piece of pipe just to get a new high seems cowboy to me

 

[Ermintrude]

Put them in boxings or in stud walls. Hours of fun looking for leaks