Draining/refilling combi boiler system All aspects of plumbing questions and answers, help, tips and information

[Tott]

I need to replace a sticking TRV (tried the usual tapping the pin/moving up & down/tapping valve/WD-40 to no avail) so need a few pointers in doing it/draining system correctly, do I just...

Turn off at stop cock, turn off boiler, drain system (I've a drain cock on rad).

Fit new TRV.

Refill system, bleed rads (any particular order - there's 2 upstairs in loft conversion, 6 downstairs), top-up system, repeat 'til right.

And should I be adding inhibitor at some point and how and where do I do this?

TIA

[Steve the gas]

Hi Tott,

Yes, mainly as you say but,

Bleed rads downstairs first,
Add inhibitor via a rad bung/plug- remove plug,screw in a 15mm compression elbow minus its nut and olive, then pour it in.
Do all above before finishing bleeding,using the dosage stated on the bottle.

Hth

[Tott]

...cheers Steve, much appreciated.

[Doneroaming]

[quote="Steve the gas"]Hi Tott,

Yes, mainly as you say but,

Bleed rads downstairs first,
Add inhibitor via a rad bung/plug- remove plug,screw in a 15mm compression elbow minus its nut and olive, then pour it in.
Do all above before finishing bleeding,using the dosage stated on the bottle.

Hth[/quote]

Hi Steve
Would the same apply to a combi boiler system in a Static
Caravan and could you put antifreeze in the same way ? PLEASE

[Steve the gas]

I would !!

[Doneroaming]

[quote="Steve the gas"]I would !![/quote]


Cheers Steve for the Info and could I ask which Antifreeze You would use
in a Static caravan

PLEASE

[Steve the gas]

I have never used such stuff.

But I guess its sold at a caravan supplies outlet so I would do as stated on the bottle.

[Doneroaming]

[quote="Steve the gas"]I have never used such stuff.

But I guess its sold at a caravan supplies outlet so I would do as stated on the bottle.[/quote]


Cheers Steve Thank You for Replying !