Boilers & Hot Water Tanks

605 topics in this forum

1. Power Flushing A Modern Gas Boiler System

   By Onoff, January 11, 2023
   • 5 replies
   • 1.2k views
   • 
   • Temp
   • January 12, 2023

2. What size boiler do I need !?

   By WillM, January 11, 2023
   • 23 replies
   • 2.7k views
   • 
   • SteamyTea
   • January 12, 2023

3. Vaillant VR33 Module for OpenTherm Support

   By Rehan Saeed, January 11, 2023
   • 2 replies
   • 12.6k views
   • 
   • MJNewton
   • January 12, 2023

4. UVC in basement plant room but no drainage for overflow 1 2 3

   By Thorfun, September 14, 2022
   • 56 replies
   • 4.7k views
   • 
   • Thorfun
   • January 9, 2023

5. How to find modulation ratios?

   By jayc89, January 4, 2023
   • 9 replies
   • 1.8k views
   • 
   • jayc89
   • January 5, 2023

6. UFH with 3 manifolds cools hw cylinder

   By rk05, December 28, 2022
   • 18 replies
   • 1.9k views
   • 
   • PeterW
   • January 2, 2023

7. 3 port motorised valve should move 90 degrees or 180 degrees?

   By me123, December 30, 2022
   • 4 replies
   • 1.4k views
   • 
   • me123
   • January 1, 2023

8. Buffer tank required?

   By DCG, January 1, 2023
   • 3 replies
   • 1.1k views
   • 
   • Marvin
   • January 1, 2023

9. combi boiler recommendations for 30c flow rate and 3500watt heating load

   By gravelrash, December 11, 2022
   • 17 replies
   • 2.1k views
   • 
   • JohnMo
   • December 24, 2022

10. Tesla “smart” immersion heater 1 2

    By Gav_P, March 9, 2021
    • 42 replies
    • 8.4k views
    • 
    • SteamyTea
    • December 18, 2022

11. Air source problems

    By tommy12398, December 17, 2022
    • 1 reply
    • 758 views
    • 
    • JohnMo
    • December 17, 2022

12. Combi boiler and unvented HW Cylinder

    By Edward, December 12, 2022
    • 9 replies
    • 3.4k views
    • 
    • ProDave
    • December 14, 2022

13. Cold Temperatures Before Central Heating

    By MortarThePoint, December 11, 2022
    • 2 replies
    • 647 views
    • 
    • MortarThePoint
    • December 11, 2022

14. Wiring in a Honeywell L641B Pipe stat

    By Steve1309, December 9, 2022
    • 3 replies
    • 1.8k views
    • 
    • Steve1309
    • December 9, 2022

15. Boiler Condensing Y/N?

    By Fly100, December 6, 2022
    • 6 replies
    • 1.9k views
    • 
    • JohnMo
    • December 7, 2022

16. Boiler broken, new build around the corner. What to do?

    By Goodremy, December 5, 2022
    • 17 replies
    • 2.3k views
    • 
    • ProDave
    • December 7, 2022

17. Can someone check this wiring arrangment

    By magunn, December 6, 2022
    • 0 replies
    • 652 views
    • 
    • magunn
    • December 6, 2022

18. Boiler seems to be ignoring controller

    By magunn, December 2, 2022
    • 4 replies
    • 1.2k views
    • 
    • ProDave
    • December 5, 2022

19. Heating System Critique

    By tuftythesquirrel, December 4, 2022
    • 5 replies
    • 919 views
    • 
    • JohnMo
    • December 4, 2022

20. Does this just pull out from under the boiler?

    By Radian, December 3, 2022
    • 2 replies
    • 725 views
    • 
    • TonyT
    • December 3, 2022

21. Slow pressure loss in new boiler

    By Adsibob, August 9, 2022
    • 13 replies
    • 2.5k views
    • 
    • Bonner
    • December 2, 2022

22. Digital thermostat for UVC

    By Adsibob, November 29, 2022
    • 11 replies
    • 1.4k views
    • 
    • PeterW
    • November 30, 2022

23. LLH/Small Buffer - Pumping direction

    By ian192744, November 29, 2022
    • 6 replies
    • 1.9k views
    • 
    • ian192744
    • November 30, 2022

24. Combining Seperate ASHP and Oil Boiler

    By ChrisDL, November 27, 2022
    • 3 replies
    • 1.2k views
    • 
    • ChrisDL
    • November 28, 2022

25. Hot Water Cylinder Discharge On Soil Stack (Passive House)

    By tuftythesquirrel, November 25, 2022
    • 18 replies
    • 7.3k views
    • 
    • PeterW
    • November 27, 2022