Removing Hot Water Pipe Outlet ?(British Gas RD 532 Combi)

[Mccfuzz]

Hi there,

I have a British Gas RD 532 Combi. Because I want to redirect some pipe work I need disconnect what looks like a standard compression connection at the combi unit. On this outlet I can't see tap or valve so I was just wondering what to expect. Will its domestic hot water tank simply flow out? Am I likey to encounter any problems when I restart the system and switch the cold water supply back on. All suggestions welcome.

Many thanks....Kev

 

[ollski]

Shut off the cold water inlet and open your hot water taps, when they stop running you are ok to disconnect.

 

[ScottishGasMan]

As said. Shut off the cold supply, open taps to take pressure off, then disconnect the pipework you need to, there is no "tank" as such, only a plate heat exchanger so there will be about a litre or less of mains water in the boiler, some of which may dribble out,

do what you need to do, hook it all back up, and in general I always advise turing the cold back on with a cold tap open and not a hot (that way any scale/debris disturbed in the stop cock gets flushed through the cold tap and not caught up inside boiler or showers etc)

there should be no issues after with the hot water, its mains fed so wont airlock, will just have some big "spits" from the tap till the air is cleared then back to normal working.