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compensation

  1. D

    weather compensation sensor and pump; are they related?

    Boiler : Viessmann Vitodens 100-w OV heat only boiler. pump : Wilo variable speed pump; CH only - no dhw on boiler. I bought a WC sensor basic (see attached photo) and connected it via provided lead to the boiler on port x21 on board. The external pump is connected to the boiler on port 20. When...
  2. H

    B&Q Kitchen Fitting Problems - Next Course Of Action?

    Hi Everyone, This forum has been invaluable to me the last few weeks and I really appreciate all of the help I’ve been given regarding a variety of issues. We had a kitchen fitting with B&Q that has been plagued with issues for the get go. It’s now over four months since the fitting started...
  3. gmc600

    Architect’s Outline Specification - how closely does this need to be followed?

    Hi, just looking for some advice on something. I’m getting a sunroom/extension built at the back of my house and noticed the builders are using 120 mm thick Kingspan floor insulation boards (TP10/TF70/TW55) whilst the Architect’s Outline Specification states that it should be 150 mm thick...
  4. J

    Viessmann weather comp sensor help needed please

    hi all, I have had a viessmann vitodens-100 w 26kw boiler fitted ( type b1hc, b1kc ) serial 7570672 i have picked up a weather comp sensor off fleebay for £15 and want to install it ( V200 outdoor sensor part 7427232 it also has a sticker on the unit that says ntc 10k ) the chap says it will...
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