Air separator as a vent?

[nads1978]

Hopefully a quickie...

Does/can an air separator (pictured) be used as the vent in a vented system? or is it necessary to run another pipe for this function?

Ta.

 

[45yearsagasman]

The top connection IS the vent fitting. Where does your cold feed connect to your system? There is no provision for feed connection on that separator.
Run 22mm up and over the exp tank leaving the correct amount of dry vent.
See your boilers instructions for that. What reason do you have for fitting it?

 

[nads1978]

The top connection IS the vent fitting. Where does your cold feed connect to your system? There is no provision for feed connection on that separator.
Run 22mm up and over the exp tank leaving the correct amount of dry vent.
See your boilers instructions for that. What reason do you have for fitting it?

That is just a pic I found on eBay.

I just wanted clarification that the 'vent' in a vented system can come from the air separator. Are you saying I may not need it? Will a tee piece and pipe suffice?

It will be going on a wood burner/boiler which will be going to a hot water tank, close by. A vented gravity system.
The F&E tank will be 2 floors above in the loft & a heat sink/dump radiator in-between HW tank and F&E tank on middle floor landing.

The HW tank install is primarily a safety feature (previous owners dodgy plumbing), but secondary to that, I'll be opening it up to the return feed of the oil boiler, via a valve operating from a/the tank stat (or maybe the immersion stat, if fitted)

Thanks.

 

[RickMoore]

No you can't is the quick easy answer. An aav could easily fail closed, they are not designed as a saftey device.

 

[ianmcd]

No you can't is the quick easy answer. An aav could easily fail closed, they are not designed as a saftey device.

That isn't an AAV its an air separator they are not the same thing

 

[Boilerman2]

And it is 22mm I am assuming a Wood burner would need to have 28mm gravity circuit attached??

 

[45yearsagasman]

Nads, I do wish you would have disclosed ALL the relevant info at the start. It saves a lot of confusion.

 

[nads1978]

Nads, I do wish you would have disclosed ALL the relevant info at the start. It saves a lot of confusion.

Pete, thanks for your replies, I just wanted the original question answering. Normally if you give too much information on here, someone will offer (probably well intentioned) advice which I am not seeking. i.e "you don't want X you want Z" or "You shouldn't be doing [insert technique] do it my way"

Sorry if the question wasn't clear, anyhow I have changed my mind about what I am doing now but, at least I have learnt something new

 

[Dan Robinson]

Perhaps it's best to let the experts decide what is or isn't pertinent information?

Trying to be a smart a7se could have left you with a dangerous installation.

 

[nads1978]

Perhaps it's best to let the experts decide what is or isn't pertinent information?

Pertinent information to elaborate on the function of a piece of hardware?

Trying to be a smart a7se could have left you with a dangerous installation.

When was I being a smart a7se? Why do you think I am asking questions? I don't pretend to know everything, that is why I am researching what I need. I have an unusual problem that requires me to ask other people for their knowledge. Isn't that what this place is for?

 

[Dan Robinson]