I wonder if someone could answer me a basic question on plumbing.
I am changing a bath suite. The pipework doesnt have isolation valves. We have a combi boiler and I need to know what the procedure would be to stop the water and install my new bathrom suite. I have heard lots of horror stories on sealed systems and pressures etc.
Does someone have the proper procedure to ensure I do not ruin my boiler in the process???
As you have a combi I am taking it that the whole system is mains fed/pressure, hot and cold (no CWSC or HWC).
If so, turn the boiler off, turn the stopcock off, and turn the kitchen sink Hot & Cold taps on ~ no water (a little whilst it drains down), good so far.
Check the bathroom taps ~ no water.
Change the suite ~ fitting ‘full bore ball isolation valves’ to each pipe (x5)
Close the taps, open the stopcock & pressurise the system, check for leaks, if ok, run the boiler up, check the system heats and flows correctly.
“I have heard lots of horror stories on sealed systems and pressures etcâ€
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