DIY Home Improvement Forum banner
1 - 3 of 3 Posts

·
Registered
Joined
·
2 Posts
Discussion Starter · #1 ·
I have a 140L Copperflow Electric Heat Exchange hot water system, model 2895.
It is dated 02/2004.

In the last few weeks the 'Overflow' has gradually increased its leaking rate, to near a constant flow. (There is a mains tap before the HPNR valve and HWS so currently I am just turning this water feed on and off when requiring hot water.)

After various consultations, I decided to replace the 'RMC' HPNR valve, (around $130).

The leak now seems worse than ever!

Is there another possible cause to the leak?
Is the new HPNR valve likely to be faulty?

Thanks for any interest.
 

·
Retired Moderator
Joined
·
25,769 Posts
Does this system have an expansion tank? If so see if it is defective.

Is there a pressure regulator /back flow/fast fill valve? Check to see if the valve is on fast fill instead of the normal operating position.

Hopefully a boiler guy will spot this one---Mike----
 

·
Registered
Joined
·
2 Posts
Discussion Starter · #3 ·
Thanks Mike

No expansion tank, pressure regulator, back flow or fast fill valve -
it is a coil system that is immersed in heated water. The High Pressure Non Return valve is really two valves; for the heated water (not under pressure) and the for coil water (under mains pressure).
I now believe the coils are leaking into the heated reservoir surrounding them.
This causes the reservoir overflow excess leakage.
Simply, new system required.

Cheers for your time though.
 
1 - 3 of 3 Posts
Top