Update On Part F and L And What It Means For Ventilation

1. Update On Part F and L And What It Means For Ventilation

2. Pete Smith Specialist Sales and Training Manager

3. Parts F and L 2010 Agenda • Part F History • The New Structure • Design Performance • Part F Ventilation Systems • Air Permeability and Performance • Part L Main Changes and Overview • Summary and Questions

4. Vent-Axia Since 1936

5. Company Locations The largest UK ventilation employer Over 800 employees 4 locations Dudley - Metals and Systems Swindon - Motors Crawley - Plastic Assembly Reading – Plastic Extrusions

6. History • 1992 – Part F – Bathroom and Kitchens needed extract rates for the first time • 1995 – Utility rooms were added • All rates were intermittent • Refurbishment followed good practice and used the same solutions

7. 1992 -1995

8. 2006 • New Part F Regulations expanded to include intermittent and continuous systems • New Part L Regulations developed because of the Energy Performance of Buildings Directive (EPBD) in Europe • Direct influence on product design • SAP became the standard tool for calculating the energy use of domestic buildings

9. 2006

10. Developing Market

11. Legal requirements in the Building Regulations and Part F of Schedule 1 1st Tier Approved Document F 2nd Tier Domestic Ventilation Installation and Commissioning Guide 3nd Tier Industry, Guides, Good practice Guides, Codes of practices and standards New Structure 2010 Both ADF and ADL refer to additional guides in the form of 2nd and 3rd tier documents

12. Tools that measure energy efficiency with targets to improve it Building Regulations • Part F • Air-tightness – • Tighter building mean more controlled ventilation • Installation – • Tighter policing on installation as performance becomes more critical • Part L • SAP • SBEM

13. Approved Document F

14. Compliance Design Performance Criteria Means of ventilation and airflow rate based on dwelling permeability Installation and Commissioning Installed performance to be achieved through Competent Persons scheme Operation and Maintenance End user information to ensure effective use and maintenance

15. Design Performance • Dwelling Air Permeability >5m3/(h.m2)@50Pa • Dwelling Air Permeability <5m3/(h.m2)@50Pa

16. Part F Ventilation Systems

17. Part F Ventilation SystemsSystem 1 Intermittent Extract Fans Intermittent Extract Fans

18. System 1 (Intermittent Fan Range) All Intermittent fans are tested as installed performance Suitable for Wall, Window, ceiling or ducted applications

20. System 1 Background Ventilators

21. System 1 Background Ventilators

22. Low Carbon VentilationDC Motor Technology • Low Carbon DC motor technology can now used for ventilation systems that meet Part F of the building regulations • Part L states that the Specific Fan Power must not exceed 0.5 watts per litre per second

23. Energy Saving DC Motor What is it? The DC motor is 80% efficient, so for every 100 watts of power only 20% is wasted in heat, compared with conventional motors that are only 20% efficient. The motors are brushless so generate less friction, and run cooler therefore most of the heat can be transferred into energy. Brushless DC motors are electronically commutated, hence the phase EC/DC

24. Energy Saving DC Motor What benefit does this give? 7,000 hrs 20Watts

25. Energy Saving DC Motor What benefit does this give? 50,000 hrs 2.5 Watts

26. System 2Passive Stack Ventilation One 125mm duct per wet area Maximum two swept 45o bends per stack Internal rooms require mechanical ventilation

27. Part F Ventilation SystemsSystem 3 Decentralised MEV Centralised MEV

28. Part F Ventilation SystemsSystem 3 Decentralised MEV

30. Part F Ventilation SystemsSystem 3 Centralised MEV

32. Part F Ventilation SystemsSystem 4 Mechanical Ventilation with Heat Recovery (MVHR)

33. Counter Flow Heat Exchanger OUTSIDE Exhaust temp’ is 2 degrees Internal temp’ 20 degrees INSIDE

34. Counter Flow Heat Exchanger OUTSIDE External ambient 0 degrees Exhaust temp’ is 2 degrees Internal temp’ 20 degrees Supply temp’ is 18 degrees INSIDE

36. Design Performance • Dwelling Air Permeability <5m3/(h.m2)@50Pa

37. Design Performance • Dwelling Air Permeability <5m3/(h.m2)@50Pa

38. System 4 (MVHR Range) MVHR units are SAP Appendix Q Listed Various models to meet project requirements Compact and light weight Easy access filters for annual maintenance. 100% Speed Control for accurate site commissioning User and Contractor friendly controls Automatic Integral control options

39. Appendix Q Appendix Q Ventilation Scheme The Products; The SAP Default Vs Practical Actual's MEV MVHR

40. Main Changes - 2010 Edition • Ventilation will become a controlled service needing sign off by a “competent person” • 2nd tier “Domestic Ventilation Installation and Commissioning Guide” with a sign off sheet • All ventilation systems shall be commissioned (including Intermittent Fans and Cooker Hoods) • Commissioning checklist to be passed to Building Control

41. Noise • Continuous Mechanical ventilation systems should be below 35dBA on trickle speed

42. Domestic Ventilation Compliance Guide

43. Domestic Ventilation Compliance Guide

44. Domestic Ventilation Compliance Guide

45. Domestic Ventilation Compliance Guide

46. Domestic Ventilation Compliance Guide

47. Domestic Ventilation Compliance Guide

48. Domestic Ventilation Compliance Guide

49. Domestic Ventilation Compliance Guide

50. Domestic Ventilation Compliance Guide