Draining/refilling combi boiler system


Postby Tott » Wed Mar 25, 2009 7:13 am

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
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Postby Steve the gas » Thu Mar 26, 2009 7:09 am

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
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Postby Tott » Thu Mar 26, 2009 12:51 pm

...cheers Steve, much appreciated.
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Postby Doneroaming » Fri Apr 03, 2009 7:43 am

[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
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Postby Steve the gas » Sat Apr 04, 2009 4:03 am

I would !!
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Postby Doneroaming » Tue Apr 21, 2009 9:38 am

[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
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Postby Steve the gas » Wed Apr 22, 2009 4:29 am

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.
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Postby Doneroaming » Wed Apr 29, 2009 9:21 am

[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 !
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