Adding Water Treatment To Central Heating

[charlton11]

I have a filling loop and a pressure gauge and need to drain the system as the water is black. When i refill, do i add any water treatment/protector and how do i do this ?

Thanks for any help.

 

[namsag]

You can either use the gel type and insert it with a mastic gun through bleed nipple. Or cheaper liquid type with system completly empty remove an upstairs rad rad valve and pour it down the pipe.

 

[kevplumb]

one of these

 

[Goldspoon]

Or...

Drain some water out of the CH system using a downstairs rad or pipe with a drain point on. Drain enough so that when you "bleed" an upstairs rad you no longer get water coming out from the bleed point (because water level has dropped below the bleed point).

Then take out complete screw in fitting from rad that houses bleed screw using an adjustable spanner (or you can take out complete bung at other end top of rad).

Then I use this which I made earlier:

It's a funnel, a length of hose... and a brass part from a garden centre (one end fits onto hose and other end screws into rad).

Then pour inhibitor into funnel. Then, when done, put rad bung back in and refill system (bleeding as required).

Job done.

A lot cheaper to buy inhibitor via bottle than via the tube.

 

[kevplumb]

very handy if you aint got stelrads