Worcester Highflow 3.5 (sealed system) Question

[steve51]

Hello Everyone

I spent some hours yesterday fitting a new filling loop, including draining the entire system and refilling with added inhibitor. All seemed to go well except right at the end i noticed a tee joint was seeping slightly - a joint i soldered some 7 years ago. It's a joint near the hot water outlet at the top of the boiler. It tees off the upstairs supply and in a really awkward spot.

Is there any way i can drain off the water pipes without draining the entire CH system? I seem to remember having to wait for an hours last time for an interminable drip to stop before the joint could be soldered - maybe i didn't wait long enough! Anyway, i'd be very grateful for any tips.

Thanks.

 

[ShaunCorbs]

Hot water circuit ?

 

[steve51]

Correct. Sorry it's not quite as clear as it could have been. The CH system seems fine now.

 

[ShaunCorbs]

Should only have to drain the cold mains as the heating and cold mains don't mix

 

[steve51]

That's what i would have thought, but can't see how to do it.

 

[ShaunCorbs]

That's what i would have thought, but can't see how to do it.

Turn your cold mains stop tap off that should cut off the water to your place

 

[steve51]

Yes, of course. But i wanted to drain the water system as well as cut it off, otherwise it drips for hours and i can't solder.

 

[ShaunCorbs]

Yes, of course. But i wanted to drain the water system as well as cut it off, otherwise it drips for hours and i can't solder.

That's not the heating system water well it shouldn't be

TBH best get a plumber out

 

[steve51]

I think it's the hot water reservoir that's causing the problem albeit water shouldn't run uphill! But i can see no way to drain it so i guess i'll have to wait for the drip to stop, unless someone perhaps has specialist knowledge of this particular boiler?

 

[king of pipes]

Cut the pipework with a rubble bag under the tee then wet vac the water out we do it all the time you stand no chance with water in there of a successful repair. Cheers kop

 

[steve51]

I wish i could get anything under the tee! A towel wrapped around it is about the most that's possible, which is why i hoped there might be some way of draining the boiler. It seems there isn't, but thanks for taking the trouble to reply.