New boiler

[sooey]

Mcalpine do a condensate valve that does that job but looks a lot neater, it's in their little blue catalogue page 14, called a convalve funnily enough.

 

[Dan Robinson]

I had seen that but I was using some stock from the van - hence using the DU145 instead of the Caleffi one that comes with the boiler.

Also, not keen on non return valves on waste systems...

 

[Tim Kelly]

Didn't spot the tundish!

 

[gas4you]

Welcome Tim! you will soon get addicted and as sad as us all on here every night

 

[chrishutt]

There is a PRV in the boiler, as mentioned above. Inside that tundish are two pipe tails. One for the condensate (a loop of 20mm tubing) and the other for the PRV.

So is it OK to discharge both condensate and PRV into a tundish discharging to waste? How would anyone know if the PRV was leaking or worse? What if the filling loop was letting by and the system pressure reached 3 bar and the PRV was discharging with no visible warning?

 

[Dan Robinson]

Tundish is lowered by the force of a little finger for observation. Filling loop has a pressure limiter set to 1 bar. There are two PRV's so chances of both sticking are slim.

The second PRV s in a boiler cupboard.

Must say I am feeling rather stoked that this is all the snagging you guys can find. No one has mentioned the bonding yet thouth

 

[chrishutt]

Tundish is lowered by the force of a little finger for observation.

Yes, but who's going to bother to do that? Maybe the service engineer, but that could leave the PRV leaking for a year without anyone knowing. Do the MIs prescribe that arrangement?

 

[Dan Robinson]

What about the second one? If you are that worried I shall cal lthe customer tomorrow and ask him to lower the rig an inch or so...

 

[chrishutt]

What about the second one?

The second PRV won't necessarily leak in sympathy with the first. I'm not going to lose any sleep over it. I'm just surprised that the MIs approve such an arrangement.

 

[Dan Robinson]

I know you're not going to panic - but the tundish was installed to be moved down by hand so that the condensate can be serviced.

If the boiler didn't have a PRV what would you say then? I/they would be relying on the EV PRV.

 

[Agile]

I am left wondering what the original poster can tell us is wrong with his boiler.

Its almost certain that it could be repaired if a part on it has failed.

Tony

 

[megawatt]

Checking PRV discharge is usually as a result of other problems in my experience and so, not having it externally visible to the customer shouldn't be a problem ... One less thing for them to worry about

 

[megawatt]

Very true Tony ... "broken" is a little vague, even for the experts on here