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  1. J

    Underfloor heating system design?

    Last week I installed UNF heating in a concrete base for a new build house. The seize of the house is 330m2. The total pipe run in the base was 1150m with 3 manifolds. I'm expecting to to run around another 850m for the 1st floor with 2 manifold. There is 200mm foil back insulation in the floor...
  2. J

    The forgotten boiler

    Came accross this on Tuesday
  3. J

    Filling solar pipe work

    Could a power flusher for central heating be used for filling solar pipe - work??
  4. J

    secondary return disagreement

    My boss is in the middle of doing a renovation in a busy restaurant. There will be new toilets installed on the ground floor with 3 Wash hand basins aprox 30 m from the ACV unvented hot water tank on the 1st floor. he's not a big fan of secondary returns reckons they're too inefficient. Our...
  5. J

    Potterton Prima fan

    Evening People. Was working on a brokdown Prima 50F today. I was getting 78 ohms resistance from the fan and had 240v at the fan but it wasn't budging. Called Baxi, they said it must be bust but didn't give me much of an explanation. If I'm getting the correct readings at the fan what was the...
  6. J

    Vokera mynute EHE not going into co mode

    I was asked to repair a Vokera Mynute 25 EHE last week. It was intermittently locking out and after being reset would operate ok anywhere from 1-5 days. Usually it would lock out at peak demand. I went along done a visual inspection of the set up, the flue had 2 fairly long hair line cracks...
  7. J

    how to calculate heat load for hot water?

    Evening folks, Just wondering when calculating heat demand for boiler seizing, how many KW to allow for heating hot water. Example:My brother's house has a 400 ltr Telford Tempest solar tank. The data badge states for a 400 ltr tank the heat recovery is 2.94 KW/24 hrs. So is 2.94 my figure...
  8. J

    Commercial oil trianing

    Is there any commercial oil training courses on offer. I know nu-way and riello have a couple running. dose anyone know if there is more courses on offer... also I'm looking to do training on Aga servicing, if someone could point me in the right direction.
  9. J

    Leak seal

    Would anyone know of leak seal brands other than fernox?
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