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Vent-Axia Seminar: Parts F and L For Ventilation 2010

Vent-Axia Seminar: Parts F and L For Ventilation 2010. 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 Competent Person’s Scheme Summary and Questions.

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Vent-Axia Seminar: Parts F and L For Ventilation 2010

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  1. Vent-Axia Seminar:Parts F and L For Ventilation 2010

  2. 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 • Competent Person’s Scheme • Summary and Questions

  3. Vent-Axia Since 1936

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

  5. 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

  6. 1992 -1995

  7. 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

  8. 2006

  9. 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

  10. 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

  11. Approved Document F

  12. 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

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

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

  15. Design Performance • 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. Part F Ventilation SystemsSystem 1 Intermittent Extract Fans All Intermittent fans are tested as installed performance Low Carbon motors give 80% reduction in power consumption, 5 Year Motor Guarantee Suitable for Wall, Window, ceiling or ducted applications

  19. System 1 Background Ventilators

  20. System 1 Background Ventilators

  21. Window Vents in Flats High Level • With no cross flow in single sided apartments high and low level ventilation is needed • This doubles what is already an increased number of vents Low Level

  22. Part F Ventilation SystemsSystem 3 MEV Decentralised MEV Centralised MEV

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

  24. Counter Flow Heat Exchanger OUTSIDE Exhaust temp’ is 2 degrees 90%+ Efficiency Internal temp’ 20 degrees INSIDE

  25. Counter Flow Heat Exchanger OUTSIDE External ambient 0 degrees Exhaust temp’ is 2 degrees 90%+ Efficiency Internal temp’ 20 degrees Supply temp’ is 18 degrees INSIDE

  26. System 4 (MVHR Range) MVHR units should be SAP Appendix Q Listed Top performing MVHR SAP Q product will help with compliance 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

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

  28. 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

  29. Competent Persons Scheme • BPEC’s Domestic Ventilation Systems 2010 has been running since May 2011 • Recognised by all competent person schemes • Delivered by manufacturers, colleges and independent trainers

  30. BPEC Training • SAP software now includes drop-down box asking whether the system has been installed by an approved installer

  31. Domestic Ventilation Compliance Guide3 Part Sign-Off

  32. Information for the Occupier The owner/occupier shall be given sufficient information about the ventilation system and its maintenance requirements so that the ventilation system can be operated to provide adequate air flow. This should apply to natural and mechanical systems in new dwellings

  33. Approved Document L

  34. Part L – Energy Efficiency • The Target Emission Rate (TER) for 2010 is 25% improvement over 2006 • SAP Q process is retained • New second tier documents in the form of Building Services Compliance Guides for domestic and non-domestic • These highlight specific performance levels in regard of ventilation

  35. SAP 2009 • CO2 factor changed • 0.42 to 0.51 • Reduced specific fan power the important factor • Potential to reduce conservative ratings if installed by a competent person

  36. Effect of System Selection in SAP Treatment of Ventilation Systems in SAP 23 22 Nat Vent 21 MEV* DER (Dwelling C02 Emission Rate) 20 MVHR** Default 19 MEV Default MVHR 18 17 16 15 6 7 2 3 4 5 Air Permeability Rate (m³h/m2 at 50 Pa)

  37. Part L1 - Domestic

  38. Part L and Solar Gain • Criterion 3 – Limiting the Effects of Solar Gain • 4.25 – If ventilation is provided using a balanced system, consideration should be given to providing a summer bypass function during warm weather so that the ventilation is more effective in reducing overheating.

  39. Part L1 SummaryImportant Features of Part L • TER 25% improvement over 2006 • SAP Q is retained • Minimum Specific Fan Power across ventilation systems • MVHR efficiency no less that 70%

  40. Vent-Axia Seminar:Parts F and L for Ventilation 2010Thank you for your attentionQuestions?

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