hot cwst

[billybob150811]

temp in cwst is 52oC its approx 20m above calorifier
calorifier apprx 10 000 litre
cwst approx 8000 litre
pipe size 50mm
no open vent
could the heat in the cwst be a result of circulation within the supply pipe
theres secondary returns and de strat pumps

 

[CBW]

I’d be investigating backflow, venting over from immersion heater overheating, a pin-holed coil.

 

[billybob150811]

no immersions and heating source completly seperate so pin hole not possable

 

[fixitflav]

no immersions and heating source completly seperate so pin hole not possable

It's a big system! More details needed.