CH problems with Primatic cylinder

[Cliff]

I have been to a property with a primatic cylinder. Rad upstairs working ok, rads downstairs cold. Have bled them & ensured rad valves are open. 15mm pipework coming down to rads is also cold. Any suggestions on why lower rads are cold ?

 

[seco services]

is the pump working ?

 

[davebgas]

Pump working ok?
Tank in loft has water in?

 

[Agile]

This is a primatic Dave.

If the downstairs rads are each fed from upstairs then they are probably blocked with sludge.

trade questions are best asked in the Combustion Chamber section of this site. Email your registration details and licence number to admin@diynot.

Tony

 

[seco services]

trade questions are best asked in the Combustion Chamber section of this site. Email your registration details and licence number to admin@diynot.

Tony

don't be a womble all your life.

 

[davebgas]

This is a primatic Dave.

****e.... teach me for reading it on the poxy iphones tiny screen

 

[namsag]

Primatic so more than likely pumped heating gravity HW.
ON flow pipe from boiler there is usually an anti gravity valve (brass 3 inches long) these block up and stop correct flow going to rads.
Sharp hit with hammer can free them but support pipe with hand .
Cost about a fiver for new one

 

[Cliff]

Pump is working, turned it up to see if that clears the problem, but to no affect. Will try checking anti gravity valve

 

[Nige F]

Primatic so more than likely pumped heating gravity HW.
ON flow pipe from boiler there is usually an anti gravity valve (brass 3 inches long) these block up and stop correct flow going to rads.
Sharp hit with hammer can free them but support pipe with hand .
Cost about a fiver for new one

Who stocks them now Not Grahams, Plumb Center or PTS

 

[namsag]

Plumbcentre def have them saw them other day.
Whether the halfwit on the counter can find them on computer is another story