ecotec boiler high retun temp

[yorkshirelad]

Hi,

I have a ecotec 837 and i have noticed when being nosy in the parameters that the boiler return temp (d41 i think) is about the same as the flow temp. I understand that the return temp should ideally be below 55C. Or at least i would expect it to be good bit lower than the flow temp.


Here are the details of our setup

Valliant ecotec plus 837 Combi

remote wireless programmer (not a vallient one so just on/off Boss Term)

9 radiators with TRVs, 3 large new doubles, 2 med old doubles and the rest singles.

1 Towel rail with no TRV

All the boiler settings are on default

CH flow temp 65C


When the house is 18C and the thermostat is set at 19 or 20 the return temp is reading 64 or 65C. Is there something i need to do optimise the system? I can feel that there are obvious temp drops across the bigger rads.

- Is it that my rads just are not putting out as much head as the boiler would like?

- Is there a rad sending back 65C water to the boiler which i need to lock down the lockshield valve on? towel rail perhaps?

- Is there a setting i can adjust to help the efficiency? perhaps reduce reduce the KW input (d0 i think) for CH currently set to auto? or slow the pump?

- Worth fitting the wireless weather compensator to the system?

Any advice gratefully received.

Thanks

John

 

[Agile]

For a start you could balance your system.

That will need a contact thermostat ( or an engineer! )

Tony