PRV in condensate

[Backboiler]

Has anyone fitted the new Baxi condensate pump that doubles up as a PRV dump? Great for airing cupboards in the middle of the house.
On a gas safe inspection last year I witnessed a PRV fed into a conventional condensate pump. Is this acceptable? It was before I passed my ACS but my mentor noted it as NTCS on the sheet just to cover his self.

 

[desrob]

mi instruction will tell you, but in my experience it's a no no .i had it on a cp12 and a r 'd it,after advice of gas safe and the manufactures

 

[AWheating]

if the manufactures instructions say it can then its fine, most of the standard pumps cant cope with the high temps and flow rates. If there is no instructions or data badge then i would assume it is incorrect.

 

[gasmarc]

I would love to know how one deals with a PRV in a basement then ? If you cannot pump it

 

[GrahamM]

I would need written conformation from the Manufacturer that this is acceptable.
Even then I would be very reluctant about accepting it. What happens if the pump fails and the PRV blows off? Where does the discharge go?

 

[GrahamM]

I would love to know how one deals with a PRV in a basement then ? If you cannot pump it

Most of the manufactures accept a supplementary PRV installed at a higher point in system where it can fall to drain safely.

 

[gasmarc]

the water goes into the pump and if it fails the water goes into the basement or you can have add an audiable alarm , when you say a supplementary prv , how does that work then

 

[Phil Stenning]

i dont like it, i have also reported a combined PRV and condensate, but that was because it was done in copper!

 

[GrahamM]

the water goes into the pump and if it fails the water goes into the basement or you can have add an audiable alarm , when you say a supplementary prv , how does that work then

The pump fails and now you have an uncontrolled discharge from the boiler spilling out from the pump. Does this sound ok to you? Granted in a basement it may or may not cause much of an issue but as in the OP's initial post "in an airing cupboard". Potentially a cause for concern!

With manufacturers permission a secondary PRV may be fitted at a higher level teed into the return and terminating safely as normal. Baxi do a specific kit for it.

 

[Backboiler]

The pump fails and now you have an uncontrolled discharge from the boiler spilling out from the pump. Does this sound ok to you? Granted in a basement it may or may not cause much of an issue but as in the OP's initial post "in an airing cupboard". Potentially a cause for concern!

With manufacturers permission a secondary PRV may be fitted at a higher level teed into the return and terminating safely as normal. Baxi do a specific kit for it.

What would you do then if the installation was in a bungalow as was the case in my original post? All pipework went south

 

[gasmarc]

if the boiler is in a basement and there is no drains , you run the prv up to the drain which is about 4 foot higher from the boiler ,This could be deemed as not installed to MIs and a warranty call could be refused because of this I bet

 

[Phil Stenning]

Grundfos make a pump designed for PRV's, like the conlift pump.

 

[AWheating]

if you have an installation without any way of running except upwards then you can use a combined condense and blow off/prv pump. They are very expensive tho the last time i looked.