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

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

• Specialist Sales and Training Manager

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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

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Vent-Axia Since 1936
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Company Locations
The largest UK ventilation employer Over 800
employees 4 locations
Dudley - Metals and Systems
Swindon - Motors
Crawley - Plastic Assembly
Reading Plastic Extrusions
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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

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1992 -1995
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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

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2006
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Developing Market
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New Structure 2010
Both ADF and ADL refer to additional guides in
the form of 2nd and 3rd tier documents
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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

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Approved Document F
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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
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Design Performance

• Dwelling Air Permeability lt5m3/(h.m2)_at_50Pa

• Dwelling Air Permeability gt5m3/(h.m2)_at_50Pa

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Part F Ventilation Systems
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Part F Ventilation SystemsSystem 1 Intermittent
Extract Fans
Intermittent Extract Fans
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System 1 (Intermittent Fan Range)
All Intermittent fans are tested as installed
performance Suitable for Wall, Window, ceiling
or ducted applications
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System 1 Background Ventilators
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System 1 Background Ventilators
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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

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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

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Energy Saving DC Motor
What benefit does this give?
7,000 hrs
20Watts
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Energy Saving DC Motor
What benefit does this give?
50,000 hrs
2.5 Watts
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System 2Passive Stack Ventilation
One 125mm duct per wet area Maximum two swept
45o bends per stack Internal rooms require
mechanical ventilation
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Part F Ventilation SystemsSystem 3
Decentralised MEV
Centralised MEV
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Part F Ventilation SystemsSystem 3
Decentralised MEV
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Part F Ventilation SystemsSystem 3
Centralised MEV
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Part F Ventilation SystemsSystem 4
Mechanical Ventilation with Heat Recovery
(MVHR)
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Counter Flow Heat Exchanger
OUTSIDE
Exhaust temp is 2 degrees
Internal temp 20 degrees
INSIDE
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Counter Flow Heat Exchanger
OUTSIDE
External ambient 0 degrees
Exhaust temp is 2 degrees
Internal temp 20 degrees
Supply temp is 18 degrees
INSIDE
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Design Performance

• Dwelling Air Permeability lt5m3/(h.m2)_at_50Pa

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Design Performance

• Dwelling Air Permeability lt5m3/(h.m2)_at_50Pa

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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
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Appendix Q

• Appendix Q Ventilation Scheme
• The Products
• The SAP Default Vs Practical Actual's

MEV
MVHR
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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

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Noise

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

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Domestic Ventilation Compliance Guide
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Domestic Ventilation Compliance Guide
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Domestic Ventilation Compliance Guide
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Domestic Ventilation Compliance Guide
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Domestic Ventilation Compliance Guide
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Domestic Ventilation Compliance Guide
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Domestic Ventilation Compliance Guide
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Domestic Ventilation Compliance Guide
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Domestic Ventilation Compliance Guide
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Competent Person Certification Schemes

• Training for potential installers delivered by
  manufacturers, colleges and independent trainers
• Design
• Installation
• Commissioning
• Handover

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Main Changes in the 2010 edition

• 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

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Approved Document L
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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

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Part L1 - Domestic
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Part L1 SummaryImportant Features of Part L

• TER 25 improvement over 2006
• Performance criteria
• Overheating
• Competent Persons Scheme

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Houses of the Future
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What it means for You

• Your customers will have to become Competent
  Person installers
• They will have to understand the design
  installation and commissioning process
• System ventilation sales will increase
• Extra revenue on sales

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Part F Systems Cost Comparisons4 Bed Kitchen 4
Wet Rooms

• Intermittent Fans
• 150 install (1 day)
• MEV
• 1500 install (3 days)
• MVHR
• 3000 plus install (4 days)

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Update On Part F and L And What It Means
For VentilationThank you for your attention