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  1. S

    Powermax 155

    This one is definitely sealed and has a round expansion tank above the boiler.
  2. S

    Powermax 155

    Tony How do i resolve that???
  3. S

    Powermax 155

    I have a Powermax 155 that appears to lose pressure when we put on the heating or run a bath. If we leave it on just hot water its fine. Any ideas?
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