no heat at rads

[desrob]

pipe work banging,rads cold, is it the pump or could it be some thing else.

 

[Billy Bob Bob]

what system is it sounds like a pump issue

 

[desrob]

what system is it sounds like a pump issue

bbu, indirect cylinder gravity primaries pumped heating

 

[Billy Bob Bob]

working ok on gravity?

 

[desrob]

working ok on gravity?

yes gravity fine,a couple of rads on ground floor struggling,all valves upstairs werefully open closed them down a bit,big rad downstairs still struggling,i'm suspecting there is plenty of resistance in it pumps working like mad,i've told them to take it off and rinse it through,but have a feeling the pumps on way out,will cleaning the rad ease the pumps workrate,and with a good balance will this be enough

 

[Billy Bob Bob]

it will help,does sound like the pumps knackerd are thy sure they have not turned any gate valves etc off?

 

[desrob]

it will help,does sound like the pumps knackerd are thy sure they have not turned any gate valves etc off?

no checked then double checked,when i messed about with it ,balancing etc, it seem to have an effect on the banging ,noise!,it was vastly reduced.,water as you know will take the easiest route,giving it a resistance free passage ,will in return reduce noise levels.

 

[Billy Bob Bob]

i would be inclined to try the pump it sounds as if the system has corrosion issues had one recently on a old system rtn from boiler blocked solid for 10 foot