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Andrew Smith
Andrew Smith, Plumber
Category: Plumbing
Satisfied Customers: 3588
Experience:  City and Guilds qualified plumber
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central heating

Customer Question

central heating
Submitted: 3 years ago.
Category: Plumbing
Expert:  Andrew Smith replied 3 years ago.

Andrew Smith :

What happens if you turn off your upstairs radiators?

Andrew Smith :

Do you get better heat downstairs?

Andrew Smith :

You may just need to balance your system.

Andrew Smith :

Try turning off your rads upstairs and then just open them 1/4 turn

JACUSTOMER-gfwppde4- :

tried that dont think thats the prob. Also eg in the mornings both CH and DHW on and all downstairs rads cold. I have to turn off DHW then they will heat up.....slowly.

JACUSTOMER-gfwppde4- :

ps last on last winter and all was ok

JACUSTOMER-gfwppde4- :

i am currently running a desludger through the system

JACUSTOMER-gfwppde4- :

also played around with the pump speed i believe its funning at its fastest

Andrew Smith :

ok, is there a valve on the outlet from the cylinder?

Andrew Smith :

It still sounds like a balancing problem and it would prefer to go through the cylinder as it is easier than going downstairs

Andrew Smith :

can you balance the heating with the hot water off and then programme the hot water to come on at different times - before the heating?

JACUSTOMER-gfwppde4- :

ps cant see a valve on the cylinder i understand that would prob solve the balencing between DHW and CH

Andrew Smith :

ok, time to try and balance everything.

Andrew Smith :

if you give every part of the system the same resistance then it will all run the same

Andrew Smith :

Try with the hot water turned off and the upstairs only open 1/4 turn, give it 5 mins then the one still cool open another 1/4 turn

Andrew Smith :

repeat until done

JACUSTOMER-gfwppde4- :

ok will try but is it poss that there is a blockage in the feed after the last upstairs rad that is working and hence no feed can get downstairs which is why they are all cold?

Expert:  Andrew Smith replied 3 years ago.
You will know for sure if you turn off the upstairs rads, and see if the downstairs ones heat. If they do then it is not a blockage more a circulation issue
Customer: replied 3 years ago.

all balenced still poor heating. Have been steered towards boiler apparently its switching on/off all the time, replaced PCB still the same, next is heat exchanger which is expensive, whats ur thoughts?

Expert:  Andrew Smith replied 3 years ago.
Rather than balanced, to rule out a pipe blockage can you turn off the upstairs radiators and see if the heat travels downstairs?

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