PRV pipework help

[i-nano]

Thanks guys, i was thinking to fit the prv on the highest point to avoid freezing, what is your opinion, would building control be happy!!, or i should just chase the wall all the way to the back garden?

 

[i-nano]

Another option is a pressure relief valve / condensate removal pump... probs more pricey tho, and i think its designed for boiler PRV not one from a unvented cylinder...

What applicance is the PRV from? make & modeL?

Vaillant 837e

 

[cdodds2004]

vaillant do a kit that u fit above if u have to discharge up hill which makes the uphill part almost like a dead leg then the valve if i remember correctly, its not good to run it up, i have ran it up and over in a bungalow were the boiler was in the middle of the house and had concreate floors, not good practice really but hand was forced! the reason its not ment to rise acording to vailant isnt freezing as u can stop that occuring its the weight of the water holding the valve closed past 3bar! which in my opinion is a little silly if it only goes up a couple of meters, but can see were they are coming from if it was along way up!

 

[wheeto]

What if pipes leaving boiler freeze & PRV is also somewhere else in house? Boiler turns on, heats up & if can't get anywhere to expand, then something fractures.

That was my first thought when I read SJ's post too. Why allow one but not the other?