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  1. J

    DHW Secondary return design

    Hi Anyone help and advise on the best option for a DHW secondary circulation (SC) layout. Scenario 1 I need to install SC in a large new build. The unvented cylinder will be in the middle of the house and so I would like to have two SC ‘loops’ i.e. T off the hot from the cylinder and go...
  2. J

    When is a boundary not a boundary?

    When is a boundary not a boundary? If directly below the external wall of a property is the pavement i.e. end of Terrace, I dare to presume you can’t terminate over the pavement as you have to be 600mm from a boundary. What’s the scenario if you are intending to locate the boiler on the first...
  3. J

    White of flues showing

    A number of boiler companies do not allow the white section of a flue to be showing at the terminal as that bit in not UV tested. In fact I am only aware of Worcester allowing it. Anyone know which other manufactures allow white showing? I have a tricky install where I have to project the...
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