Problems Draining System

[[email protected]]

Hi.

Decided to drain my ch system and add some sludge remover.

i tied up the ballcock in the header tank and connected a hose to the drain point on the lowest rad. as the water drained i opened the blled valves upstairs and the water started to run out. However, the water remianed in the header tank?

I read somewhere that you should either blow hard through the expansion pipe, or alternatively push water through it. But had no success, help!

Cheers

 

[sonray ltd]

your cold feed pipe is blocked then.

it useally blocks where it joins the system.

if you run a magnet down the cold feed pipe near the tee to the system you'll find it will stick, that'll be the blockage.

if its not to blocked a hose run from the mains water down the cold feed can sometimes shift it.
if not its a cutout and replace job.

 

[[email protected]]

Thanks Sonray,
any advice on how to clear the blockage?

sorry sonray, didn't fully read post, will try that.

 

[sonray ltd]

Thanks Sonray,
any advice on how to clear the blockage?

sorry sonray, didn't fully read post, will try that.

as above.

 

[[email protected]]

Sonray,

a magnet sticks on a t junction where the 15mm connects to 22mm next to the pump. do you think thats it?

 

[sonray ltd]

if thats the connection from the 15mm cold feed from tank and the 22mm system pipework work then yes. most common place.
some can be an easy fix some can be a pain due to the location etc.

if in a bad location ie cutting out the tee means altering other pipework because its near a bend etc.
if you can cut the cold feed above the tee then you can sometimes poke the block out with a coat hanger etc then just put a new coupler in to reconnect the cold feed.

 

[[email protected]]

Thanks Sonray,

don't think i have a coupler in my toolbox, so job for tomorrow. I'll let you know how i get on.

Cheers