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  1. P

    How do I balance a boiler

    I have a worcester bosch greenstar heatslave 18/25 combi, hot water is 50 deg C & the flow/Rtn has a difference of 8 deg C. I can borrow the gear to check the temp tomorrow it measures flow temp / Rtn temp & the difference between them. I have been told by a plumber I need to back the boiler up...
  2. P

    How do I balance a boiler

    It's a combi boiler with 7 rads and the diff is less than 10 deg C
  3. P

    How do I balance a boiler

    I have balanced all the radiators but can not get a 20 deg temperature between flow & return at the boiler end. What do I need to do? Someone told me I have to back the boiler up but how do I do that?
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