Home  5  Books  5  GBEzine  5  News  5  HelpDesk  5  Register  5  GreenBuilding.co.uk
Not signed in (Sign In)

Categories



Green Building Bible, Fourth Edition
Green Building Bible, fourth edition (both books)
These two books are the perfect starting place to help you get to grips with one of the most vitally important aspects of our society - our homes and living environment.

PLEASE NOTE: A download link for Volume 1 will be sent to you by email and Volume 2 will be sent to you by post as a book.
Buy individually or both books together. Delivery is free!


powered by Surfing Waves




Vanilla 1.0.3 is a product of Lussumo. More Information: Documentation, Community Support.

Welcome to new Forum Visitors
 Join the forum now and benefit from discussions with thousands of other green building fans and discounts on Green Building Press publications: Apply now.




Heating and cooling: HELP NEEDED - Backboiler to Thermal store

Bottom of Page

31 to 33 of 33

  1. <
  2. 1
  3. 2
  4. >
  1.  
    Testing a system with potential voids - the test, if done gently and with an IR thermometer on the pipework will show up any air locks.

    Of course air locks will have to be eliminated but it is nice to see where they are so that you know where to modify the pipework or put in an automatic vent valve.
    • CommentAuthorJacket84
    • CommentTimeMay 22nd 2025
     
    Thank you all for your replies . I will come back to some of them with further details. It sounds like I made need to purchase an infrared thermometer and take some readings. However to answer some of the questions. The akvaterm tank is rated at 3 bar.
  3.  
    Thinking more

    The water volume sitting in the boiler and the towel rad circuit is quite small, maybe 50 litres. If the pump is not running or is restricted, then the 17kW power of the boiler will overheat this volume very quickly, eg it will take about 6 minutes to go up from 70deg to boiling. Seems important that the pump is kept running the whole time, if the stat turns it off even a few minutes it could be too late coming back on (see Paddy's comment)

    The expansion vessel needs to be about 150litres for this big store, so from a commercial rather than domestic range. Similar size as a conventional house hot water cylinder. If there isn't space then the store and wood stove could be converted to open vented, and the oil boiler and rads pressurised and connected with a coil or phx.

    Is this one of the (rather lovely) cookers with auto pellet feeder and electric burner fans? They may accept an on/off signal from the CH controller, that could be more useful for preventing overheating than turning the pump on and off.

    There are quite a few safety and operational problems raised in this thread which might seem a bit daunting. However rest assured the big ticket items are all in place and it's just about sorting out the important details, shouldn't be too £ !

31 to 33 of 33

  1. <
  2. 1
  3. 2
  4. >
Add your comments

    Username Password
  • Format comments as
 
Back to Discussions Top of Page
   
The Ecobuilding Buzz
Site Map    |   Home    |   View Cart    |   Pressroom   |   Business   |   Links   
Logout    

© Green Building Press