Heating Issues

jackhua

Hi All,

i don't if my topic has been presented before. if it is please indicate

recently i have done some renovation job. include some plumbing work:

change a new hot water tank.
relocate 2 radiators
remove 2 radiators and reinstall 1 in other area

There are 10 radiators in total in the house. There is a pump installed at the top of the gas boiler for water flow. there is a expansion tank installed at the hot water tank area.

Now,
water in hot water tank heat up very quick. 4 radiators at upstairs work perfect. one at upstairs not working.
there are 5 radiators downstairs. 1 of them works well. 2 of them get warm and hot sometime but only for a little while. other 2 get warm some days.

Please let me know if you have any idea what is happening.

Cheers!!!!

one shot bang bang

did you check for air block

jackhua

one shot bang bang wrote: »

did you check for air block

Sorry, forgot this one.

Yes, i tried to release all the air from each radiator. don't know if i was doing it right but i opened up the top conner small screw and heard air and see a bit water comes out until no sound of air and more water only.

also, i can hear some banging in the system. not very often but once twice in few hours.

DGOBS

A balance of the circuit is where you need to start, or get a local plumber in to do it for you.
There is a balance valve on the dhw cylinder, maybe this is fully open also