fitting epansion vessel

[Fredstudio]

Hey I am wanting to fit an expansion vessel on a sealed central heating system I presume this is best on the return? My main question is can the expansion vessel be fitted in a sidewise postion as this is best for the room I have available. As show in my imagine below.

Untitled

• Fredstudio
• 14 Oct 2012
• 1

 

[MrGassafe]

Yes.

 

[Fredstudio]

Thank you so it doesnt need to be upright can be sidewise?

 

[MrGassafe]

Yes.
Any orientation.

 

[andytw]

They can get some moisture from condensation in the air side of the vessel. So, if possible, have the inflation valve on the top to avoid the moisture from corroding the valve insert.
Not a big deal if you don't, as the valves can be unscrewed and replaced but it is hassle you don't need.

andytw

 

[PlumbGas]

if it gets corroded all you need is a schreader valve from Halfords (same as a car) and a foot pump simples

 

[Fredstudio]

Thanks so I can put it sideways I need to do this due to height restrictions were it needs to be placed. Its on a systems with two to port valves as the heating is zoned is the best place to put the vessel on the return legs of one of the circuit close to the boiler.

 

[ianmcd]

doesnt need to be close to the boiler as long as its on the return pipework so wont be affected by the zone controls

 

[Fredstudio]

Thanks ok so anywere on the return is that so its still on both systems if one zone valve is off?

 

[Agile]

Its far better with the air to the top.

Its actually better if its a short distance from the return with 15 mm tube as that keeps the hot water out of it and lets it run cooler. So it should last longer!

Tony

 

[CBF]

read the MI most boilers req it on the return as close to the boiler as possible

 

[Fredstudio]

is it ok to tee off and run the return to the expansion vessel in 15mm? the vessels got a 22mm connect on it.

 

[ianmcd]

yes 15mm more than adequate

 

[Fredstudio]

Even on a large system? the vessels got a 22mm connection