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  1. C

    Ventilation of old E Type Boiler Query

    and I would suggest I take no further notice of you as you cant tell a cupboard from a room!
  2. C

    Ventilation of old E Type Boiler Query

    Who knows why? - I'd say that they were dealing with a prior owner , who had no knowledge whatsoever of these matters, took the advice on the required ventilation at face value and whoever put the ventilation in exploited their naiveity for their own commercial gain - exactly what I am trying to...
  3. C

    Ventilation of old E Type Boiler Query

    just wanted it sense checked by an ethical individual better informed than myself
  4. C

    Ventilation of old E Type Boiler Query

    they obviously didn't classify it as a compartment as they would have made the pipes larger - they didn't have to so they didn't do so.
  5. C

    Ventilation of old E Type Boiler Query

    same ceiling height as the corridor and the room next to it - some "compartments" this size sell for hundreds of 000's in London
  6. C

    Ventilation of old E Type Boiler Query

    Full ceiling height, full sized door 315 cubic feet of space!
  7. C

    Ventilation of old E Type Boiler Query

    By whose definition?
  8. C

    Ventilation of old E Type Boiler Query

    Yup your right - i assumed they were 4 inch - just measured em they are actually 10cm so agree with your CSA of 78.5cm2, which for 2 pipes is 157cm2 which exceeds the required 155cm2
  9. C

    Ventilation of old E Type Boiler Query

    Extract from the boiler manual " An adequate supply of fresh air for combustion and ventilation must be avilable to ensure safe and efficient operation of the boiler. Where the appliance is installed in a room (which it is) purpose designed ventillation must be provided in an outside wall of...
  10. C

    Ventilation of old E Type Boiler Query

    Fair point - that would be the case - however removing the extractor would leave 162cm2 of free air, not requiring any extraction or interlock
  11. C

    Ventilation of old E Type Boiler Query

    If the extractor was removed and there only existed the 2, 4inch vent pipes there would be 162cm2 of venting to the outside which exceeds that stated in the boiler manual let alone my own "chimpy" calculations!
  12. C

    Ventilation of old E Type Boiler Query

    So are my calculations incorrect?
  13. C

    Ventilation of old E Type Boiler Query

    Sorry I meant positive pressure! - air flows to the outside from top pipe due to positive pressure generated by extractor pulling in air from outside in bottom pipe.
  14. C

    Ventilation of old E Type Boiler Query

    Hi - thanks for your response. There are 2 4 inch pipes, one sucks out air from near the ceiling of the room due to the negative pressure caused by the extractor pulling air from outside towards the bottom of the room. Extractor is connected to boiler via a heat thermostat i believe.
  15. C

    Ventilation of old E Type Boiler Query

    Hi All I bought my current property 2 years ago where the water and central heating are powered by an ideal e type boiler CF 105N that works fine. It is housed in its own room, 9 foot by 5 foot by 7 foot with a door opening onto a corridor which has top and bottom vents. The boiler itself has...
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