1. Building Automotive Industry www.rehau.co.uk RESIDENTIAL HEATING & COOLING SEMINAR AN INTRODUCTION TO TEMPERATURE CONTROL SYSTEMS

2. Building Automotive Industry www.rehau.co.uk RESIDENTIAL HEATING & COOLING SEMINAR AN INTRODUCTION TO TEMPERATURE CONTROL SYSTEMS SPEAKER AGENDA– 09.00 – 09.30 TONY HARBOUR, Technical Specifications Manager, REHAU Ltd. 09.30 – 10.00 RICK HUTCHINSON, Business Development Manager, MITSUBISHI Electric Europe B.V. 10.00 – 10.30 PAUL HEATLEY, Area Sales Manager, KAHRS Flooring 10.30 – 11.00 COFFEE / TEA Break 11.00 – 11.30 GARY AKERS, Technical Manager, St George West London 11.20 – 12.00 WILL GOLD, Design Engineer, REHAU Ltd. 12.00 – 13.30 Q&A session and Networking Lunch

3. Building Automotive Industry www.rehau.co.uk REHAU SURFACE HEATING & COOLING TECHNOLOGY AN INTRODUCTION TO TEMPERATURE CONTROL SYSTEMS

4. © REHAU LEARNING OBJECTIVES About REHAU The UK UFH market Introduction to Underfloor Heating & Cooling Control Options Floor types PE-Xa pipe AGENDA

5. © REHAU REHAU COMPANY HISTORY Private Company -1948Founded in the Bavarian town of REHAU -1962First UK Sales Office and Warehouse opened in Slough -1975First Manufacturing Plant was opened in Amlwch -1995Opening of the new headquarters in Ross-on-Wye -2012REHAU celebrated its 50 th anniversary trading in the UK UK LOCATIONS

6. © REHAU REHAU WORLDWIDE 6 CONTINENTS174 LOCATIONS OVER 15,000 EMPLOYEES THINK GLOBALLY – ACT LOCALLY

7. © REHAU REHAU DIVISIONS FURNITURE, HOUSEHOLD APPLIANCES, HOSES AND INDUSTRIAL DEVELOPEMENTS EXTERIOR, WATER MANAGEMENT, AIR MANAGEMENT & SEALING WINDOW AND CURTAIN WALLING TECHNOLOGY, BUILDING TECHNOLOGY, CIVIL ENGINEERING UNLIMITED POLYMER SOLUTIONS Building Solutions Automotive Industry

8. © REHAU THE UK UNDERFLOOR HEATING MARKET UNDERFLOOR HEATING AND COOLING Wet & Electric UFH included Market grown since 2009 5% of the UK heating market £78m value in 2011 Est. £90m value by 2016 Non-domestic projects account for 51% share Emphasis on small flats & apartments (49% share) UFH can create up to 15% more space in the property

9. © REHAU UNDERFLOOR HEATING AND COOLING ENERGY REQUIREMENTS Energy requirements of a UK home can typically come from 40-50 W/m² Average family home (120-160m² ) requires 6-7kW Optimum flow temperature for heating from heat pumps (≈ 35-40°C) Optimum flow temperature for cooling is ≈ 16°C, possible to obtain cooling directly from primary ground-source circuit, i.e. simple pump (no heat pump)

10. © REHAU Domestic Heating Compliance Guide - System temperature controls - High limit thermostat - Room temperature control - Temperature control for each room - Weather compensating controls should be installed - Time control - Dwellings with total usable area up to 150m² - Dwellings with total usable area > 150m² - Boiler control - Boiler interlock - SAP rating UNDERFLOOR HEATING AND COOLING BUILDING REGULATIONS – DOMESTIC HEATING COMPLIANCE GUIDE

11. © REHAU BASIC PRINCIPLES UNDERFLOOR HEATING AND COOLING Modes of heat transfer from human body

12. © REHAU * * Source: BSRIA APPLICATION GUIDE AG 12/2001 Thermal comfort Since majority of the heat lost from the human body is due to Radiation, the comfort level derived from Floor Heating is greater than by Convection, due to the heat lost from the human body being replaced in the same way Underfloor heating Radiators Radiation60 %30 % Convection40%70 % Convection Radiation Thermal Comfort / Radiant Heat BASIC PRINCIPLES UNDERFLOOR HEATING AND COOLING

13. © REHAU UNDERFLOOR HEATING AND COOLING TEMPERATURE PROFILES

14. © REHAU - Fit Edge Insulation - Lay Floor Insulation - Tape Joints - Tape Edge Insulation - Site Manifold - Lay Circuit - Reverse Spiral - Prepare Building - Fill / flush - Pressurise to 6 Bar UNDERFLOOR HEATING AND COOLING SYSTEM INSTALLATION

15. © REHAU UNDERFLOOR HEATING AND COOLING BENEFITS OF UNDERFLOOR HEATING Same comfort level at lower room temperatures> 15% to 30% potential saving in fuel costs* Reduces wasted heat at ceiling height> lower heat load Large heat emitter reduces heating water temperature> compatible with heat pumps / solar etc. Vertical temperature profile close to ideal profile> increased comfort level Even spread of heat across complete floor> high comfort level Silent and invisible heating system> high comfort level Air movement at a minimum> allergy friendly No radiator grills > freedom in space design & safe Virtually maintenance free system> no downtime No ventilation shafts, no covers> very low security risk (prisons, public areas) * Source:SEAV – ‘Operating Costs of Gas Appliances’ & Choosing a heating system’ / BSRIA Application Guide AG 12/2001

16. © REHAU UNDERFLOOR HEATING AND COOLING WHY COOLING? -Over heating of residential buildings is even in UK climate conditions quite common for the following reasons: -High internal gains through people -High internal gains through electrical equipment e.g. TV’s, Computers/Laptops etc. -High solar gains -Higher insulation of building -Lower air leakage rates

17. © REHAU UNDERFLOOR HEATING AND COOLING PRINCIPLES OF UNDERFLOOR COOLING Thermal comfort of a person is determined by: The person’s activity The person’s clothes Air temperature Air speed Air humidity Surface Temperature Heat output of the human body occurs via three main mechanisms: RADIATIONEVAPORATIONCONVECTION

18. © REHAU Important factors which effect the cooling output - Floor covering - Pipe spacing - Pipe dimension - Floor Construction - System - Heat gains UNDERFLOOR HEATING AND COOLING SYSTEM DESIGN

19. © REHAU - Lower thermal mass - Chip board 25 mm - Plaster board 25 mm - Higher thermal mass - Screed 65 mm - Concrete 150 to 200 mm Screed systems TABS systems UFH system for joisted floors Chilled ceiling element - Typical response times - Screed (75mm) – 1 -1.5 hr/1°C - Concrete (150mm) – 4 – 6 hr /1°C UNDERFLOOR HEATING AND COOLING THERMAL MASS OF EMMITERS

20. © REHAU DescriptionCross Section Thickness Thermal Conductivity Resistance Overall Thickness λ mm d W/mK RλB M²K/W dWD mm Carpet Wood/ Adhesive Vinyl Ceramic Tiles/ Thin Mortar Bed Ceramic Tiles/ Mortar Bed Flagstones/ Mortar Bed 10 0.07 Max 0.15 10 8282 0.2 0.04 0.01 0.05 10 5 0.23 0.022 5 10 2 1.0 1.4 0.01 0.001 0.011 12 10 1.0 1.4 0.01 0.007 0.017 20 15 10 3.5 1.4 0.004 0.007 0.011 25 UNDERFLOOR HEATING AND COOLING Typical “R” Values of Floor Coverings SYSTEM DESIGN

21. © REHAU UNDERFLOOR HEATING AND COOLING Typical 100-150mm pipe centres 16mm x 1.5mm RAUTHERM Universal pipe Flow temp 16ºC – Return temp 19ºC With a surface temperature of 20ºC and room temperature of 26ºC – 32W/m² cooling can be achieved. IT IS RECOMMENDED THAT A FLOOR COVERING WITH A LOW THERMAL RESISTANCE IS USED TO MAXIMISE THE COOLING OUTPUT (Tile, Slate etc.) SYSTEM DESIGN

22. © REHAU UNDERFLOOR HEATING AND COOLING COOLING CONTROLS REHAU INTELLIGENT CONTROL SYSTEM - HEATING & COOLING MODES: Each zone controlled by a room sensor – continuously compares required room temp with actual room temp If room temp is too low or high it signals the actuator to open the return valve and allow warm or cold water to flow into the circuit SET-BACK MODE: When leaving the house or at night, systems allows internal temp to drop to a lower level In cooling mode it allows the internal temperatures to INCREASE Makes the system respond quickly & efficiently

23. © REHAU UNDERFLOOR HEATING AND COOLING REHAU CONTROL OPTIONS

24. © REHAU Underfloor Heating Controls with BMS Compatibility Advantages - Specifically designed for underfloor heating and cooling - Developed and tested software - Remotely monitor and control UFH/C system - Optimise running costs - Install less sensors to do the same job - Low cost option BMS AND UNDERFLOOR HEATING CONTROLS UNDERFLOOR HEATING AND COOLING

25. © REHAU REHAU STAR Control System Advantages - Cost Effective - Easy to use - Underfloor heating ONLY - Reliable PWM used - Valve protection system reduces maintenance - Night setback can deliver savings of up to 30% SUB-SURFACE HEATING / COOLING CONTROLS STAR CONTROLS – FOR MULTI-OCCUPANCY PROJECTS

26. © REHAU UNDERFLOOR HEATING AND COOLING FLOOR TYPES OVERVIEW DIFFUSION PLATEFLOATING FLOOR RAUFIXTACKER SHEET

27. © REHAU UNDERFLOOR HEATING AND COOLING SYSTEM COMPONENTS Base pipe made of PE-Xa Adhesive O 2 -Barrier coating made of EVAL Oxygen impermeability according to B.S 7291 Rautherm Universal Pipe -Excellent thermal and chemical resistance -Can withstand 6 bar at 95ºC -Pipe ‘kinks’ do not damage the pipe and still maintains 98% strength

28. © REHAU - Made from Cross-Linked Polyethylene (PE-Xa) - Conforms to: -WRAS -BBA Approved -BS 7291 -DIN 4726 Polyethylene Polyethylene Cross linked Rautherm Universal Pipe UNDERFLOOR HEATING AND COOLING SYSTEM COMPONENTS

29. © REHAU -Nearly 1 billion installations worldwide – no leaks! -10 year comprehensive loss warranty -Fast and simple installation (60% quicker than copper) UNDERFLOOR HEATING AND COOLING SYSTEM COMPONENTS

30. © REHAU POLYMER CAN BE GREEN Lower cost to the environment for production - No mining operations for the ore - PEX pipe is chemically inert therefore highly resistant to corrosion and lasts longer - PE is abundant, created by refining operations - Low energy cost to produce compared with copper - No chlorine is used in production of PEX Proven long life and durability - Provides value: Performance vs environmental cost - Recyclable PEX can be ground up to inert “filler” e.g. inert filler in asphalt, irrigation tube etc ENVIRONMENTAL AND RECYCLABLE ISSUES Other Consideration - Quiet operation - Dampens water hammer, reduces pressure spikes that may harm equipment and fixtures - Does not add minerals to drinking water or to the public water system

31. © REHAU Low energy windows / curtain walling Ground-air heat exchanger Ground-source probes/collectors Stormwater management District heating pipework Underfloor heating/cooling RENEWABLE ENERGY SOLUTIONS DOMESTIC APPLICATIONS Rainwater harvesting

32. Building Automotive Industry www.rehau.co.uk THANK YOU FOR YOUR ATTENTION ANY QUESTIONS?