Johntheo5
'Do you have a LLH (low loss header) or CCTs (close coupled Ts) ??.'
Don't know. I can't see anything looking like a llh.
ScottishGasMan
Thanks for the advice. I'll give it a go this weekend
ScottishGasMan thank you. My initial point was I've been advised to have a rad flow/return differance of 11C. But if the primary is 10C should I be aiming for 5C?
Got into the D codes & found the following info.
D005= 60C
D015 pump speed = 15%
D040= 54C
D041= 51C
Seems the wife changed the temp...
Johntheo5 thank you for your prompt reply. I now realise the condensing boiler has not actually been working efficiently since fitting for 3.5yrs! Lesson learned,,, don't trust tradesmen that owe you a favour.
Hello all,
Trying to get the above running efficiently. Boiler fitted to existing system. Installation docs state
flow temp=75
Return temp=65
Everything I read says the dt should be 20?
So if I try to balance the rads what DT am I working to?
I've managed to work out the rad order using...