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- 27 Jun 2007
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Hello again folks.
I'd like some advice please if I may?
My Puma 100 combi never had a 'filling loop'. Instead, there is just a single isolation valve in between the mains feed (on the left of the picture) and what I presume is the CH loop (on the right. This is the 22mm pipework that goes under my floor and also runs up in to the flat upstairs). The image should be rotated clockwise for proper orientation.
The screw head on the valve is worn so needs replacing and the system keeps filling up even when the valve appears to be in the off position, and so the prv is letting by.
My landlord asked me if I could replace it myself if he gave me the part, but I advised him I wouldn't be comfortable doing it. So says he's coming round tonight to replace the isolation valve but I'm worried he'll flood the kitchen as he says he plans to do things in this order.
Drain the boiler from the prv.
Shut the mains stopcock.
Drain the bath and sinks taps.
Then remove the isolation valve.
My worry is that removing the isolation valve will cause all of the water from the CH loop to escape. I think this due to believing that draining the boiler via the prv will drain the boiler only and not the CH loop, so the rads will still be full of water.
Am I right or have I got it totally wrong?
I'd like some advice please if I may?
My Puma 100 combi never had a 'filling loop'. Instead, there is just a single isolation valve in between the mains feed (on the left of the picture) and what I presume is the CH loop (on the right. This is the 22mm pipework that goes under my floor and also runs up in to the flat upstairs). The image should be rotated clockwise for proper orientation.
The screw head on the valve is worn so needs replacing and the system keeps filling up even when the valve appears to be in the off position, and so the prv is letting by.
My landlord asked me if I could replace it myself if he gave me the part, but I advised him I wouldn't be comfortable doing it. So says he's coming round tonight to replace the isolation valve but I'm worried he'll flood the kitchen as he says he plans to do things in this order.
Drain the boiler from the prv.
Shut the mains stopcock.
Drain the bath and sinks taps.
Then remove the isolation valve.
My worry is that removing the isolation valve will cause all of the water from the CH loop to escape. I think this due to believing that draining the boiler via the prv will drain the boiler only and not the CH loop, so the rads will still be full of water.
Am I right or have I got it totally wrong?