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Domestic Ventilation SystemsThe GuideMEVdMEVMVHRdMVHR

ContentsProduct SelectorProduct Selector3Xpelair Systems4A Guide to Mechanical Extract Ventilation (MEV)A Guide to Mechanical Extract Ventilation with Heat Recovery (MVHR)Features at a Glance556MEV System Solutions7DomesticIntroduction 1111111111111111122Wet Rooms11122334455667788888Toilets 1 1 1 1 1 1 1 6300325350183.6 190.8 212.4 219.6 241.2 248.4 270.0 277.2 298.8 324349378Dwelling Size(m2)MEVXplus 2 EC and EC RFLow-energy Multi-point Domestic Ventilation UnitsKitchens8Peak Airflow(m3/h)*46.8 75.697.2 104.1 126.0 133.2 154.8162Simply Silent Contour CV & CVLV4"/100mm Constant Volume Extractor Fans10PremierCentrifugal Extract and Condensation Control Fans12MVHR System Solutions15MEVdMEVXcell 150QVW and 200QVWMechanical Ventilation with Heat Recovery Units16Xcell 300QVI and 400QVIMechanical Ventilation with Heat Recovery Units18Xcell Stratum S120Q, S105QVI, S155QVI and S275QVIHorizontal Mechanical Ventilation with Heat Recovery Units20Xcell Compact XRHorizontal Mechanical Extract with Heat Recovery Unit22Xcell 200Horizontal Mechanical Extract with Heat Recovery UnitMVHR (Appendix us 2 EC Xcell 150QVW Xcell 200QVW Xcell 300QVI Xcell 400QVI Xcell Stratum Xcell 200 Xcell CompactXR 24Muro XHRMThrough-the-wall Decentralised Mechanical Ventilationwith Heat Recovery Unit26SolitairSingle Room 4" Decentralised Mechanical Ventilationwith Heat Recovery Unit28LoVolt XHR150Single Room Decentralised Mechanical Ventilationwith Heat Recovery Units30EverDri XEL, XELH, XEWHL, XEWHR and XEWLong-life Positive Pressure Ventilation Units33Controllers: Domestic Controls for Xpelair Systems34Sensors and SwitchesVentmiser: Multi-input Controller35MVHRdMVHR2Peak airflow(l/s)*Based on Part F of the Building Regulations and CIBSE Guidelines.*Guide only for average number of rooms in dwelling.3

Xpelair SystemsMechanical Extract Ventilation (MEV)The solution to the challenges for condensation and mouldWhat is MEV?Is this system right for my application?Mechanical Extract Ventilation (MEV) creates a healthyliving environment for occupants by extracting stale, moist aircontinuously from the wet rooms of a dwelling and dischargingthis to the external atmosphere. There are two ways of achievingthis type of system: by installing a central extraction unit(such as the Xpelair Xplus 2 EC) which is then ducted to multiplewet rooms and sited discreetly in a loft or airing cupboard; or byinstalling multiple extractor fans in each wet room that run anddischarge air continuously. The latter is known as decentralisedMechanical Extract Ventilation (dMEV).The primary aim of both MEV and dMEV is to provide a healthy,contaminant-free indoor environment. The suitability of eachsystem will depend on a dwelling’s size, occupancy and numberof wet rooms. But the key distinctions are outlined below:Simply SilentTMContour CVThe effects of moisture created by everyday living canquickly lead to the deterioration of the fabric of a building.Cooking, washing, showering and breathing all createwater vapour. Without a home being able to ‘breathe’,this moisture has nowhere to go.Mould growth on cooler surfaces like window frames,and in unvented spaces such as the back of wardrobes,not only looks bad – it can be bad for occupant health too.MEV Requires installation of one ventilation unit and ductingto wet rooms. Operated by controllers in each wet room –Xpelair supply both wired and wireless control options. Allows for out-of-sight product installation.dMEV Requires installation of multiple extractor fansin each wet room. Allows each fan’s performance to be set at installto meet the requirements of the wet room. Is ideal for refurbishments (no ducting required).Mechanical Extract Ventilation with Heat Recovery (MVHR)What is MVHR?How does MVHR work?Mechanical extract ventilation with heat recovery (MVHR)combines the merits of MEV with the benefit of heat recovery.This enables up to 91% of the heat lost through extraction to beconserved and retained in other habitable rooms in a dwelling.Highly efficient and cost-effective, MVHR doesn’t waste theexisting heat in the property; instead, it distributes this heatevenly in living rooms, dining areas and bedrooms.MVHR works through a clever combination of air extractionand supply. Stale, moist air is extracted from wet rooms while,at the same time, fresh air is brought in from outside.The extracted air passes over a heat exchanger, at which pointthe heat is collected and used to warm the incoming air.The result: a consistently comfortable indoor environment andincreased efficiency. Xpelair offers both centralised and singleroom MVHR systems, so there’s a solution to suit all applications.Xcell 150Solitair45

Features at a GlanceIP RATEDIPXPIVMechanical Extract Ventilation:system extracts stale, moist aircontinuously from wet rooms tocreate a healthy, contaminant-freeindoor environment.Positive Input Ventilation:delivers a continuous supply of fresh,dry air into the home and forces old,moisture-laden air out through naturalleakage points.PPENDIXPAQSAThis product is listed in Appendix Qof SAP, allowing for easy and impartialassessment of its performance.AC/EC/DC MotorsEfficiencyIndicates whether a system usesan alternating current (AC),direct current (DC) or electricallycommutated (EC) motor. The lattercombines AC and DC voltages.Denotes how efficient the systemis in terms of the heat recoveredfrom extracted air. Xpelair heatrecovery cells are 88 – 91% efficient,dependent on model.90Constant VolumeHouse InstallationSystem uses Intelligent Adaptiflow Sensing to deliver a constant volumeof extracted air to eliminate humidity,condensation and mould growth.Model has been designed specificallyfor loft or airing cupboard installations,providing a suitable solution withina house.IP RatingApartment/Flat InstallationDefines the sealing effectiveness levelof electrical enclosures; an IPX4 and IPX5rating denotes systems that are suitablefor installation in bathroom wet areas.Model has been designed for wallor floor void installations, providing anideal solution for apartments and flats.CentralisedWet Room(s)3MEVVentilation TypeCentralisedDecentralisedLow-energy Multi-pointDomestic Ventilation Units 4"/100mm ConstantVolume Extractor Fans SAP Appendix Q ListedMEV with Heat Recovery: system usesheat from extracted stale air to warmincoming air for a comfortable indoorenvironment and increased efficiency.A central extraction unit is siteddiscreetly in a loft or airing cupboardand ducted to multiple wet rooms.6Product MatrixMEVMVHRAC/EC/DCMEV System SolutionsProductPage8Xplus 2 ECXplus 2 EC RF 10Simply Silent Contour CVSimply Silent Contour CVLVdMEVCentrifugal Extract andCondensation Control Fans 12PremierDenotes the number of wet roomsthat may be configured with this model.DecentralisedPassivhausMultiple extraction units are installed ineach wet room, which run and dischargeair continuously and independently.Passivhaus standard buildings provide ahigh level of occupant comfort while usingvery little energy for heating and cooling.7

Xplus 2 EC and EC RF8IPX2Low-energy Multi-point Domestic Ventilation UnitsECSpecificationReference NumberMotor TypeSpeedsExtract Performance (FID, m3/h)Xplus 2 EC RF and RFH models are supplied with a wirelessConneX remote control. This uses kinetic energy to send controlsignals to the unit and allows it to be operated from anywherearound the home. The battery-less solution can reduce installationtime by removing the need for cables running from the unit toa controller, making it an ideal refurbishment solution.Xplus 2 ECXplus 2 EC RFXplus 2 EC RFH92795AG92854AG92795AGECECEC324260 to 550 (fully adjustable)260 to 550 (fully adjustable)260 to 550 (fully adjustable)Maximum Extract Performance (m3/h @ 100Pa)515515515Maximum Power (W)797979Spigot Diameter (mm)12512512520.1 / 30.7 / 37.1 / 45.120.6 / 35.2 / 47.120.6 / 35.2 / 47.1Weight (kg)3.43.43.4UK Guarantee (years)5*5*5*Sound Pressure Level (dB(A)@3m)*Motor only.KITCHENS.F.P (W/l/s) 2 Additional Wet RoomKey Features Up to three installer adjustable speed settingsto suit dwelling size. Suitable for horizontal or vertical installation. Suitable for temperatures up to 500C. Integral fixing points. 100% recyclable. 4 Additional Wet oller Options190mmSide ViewReference480mmFront ViewXplus 2 ECMed/High Speed(full 3453313213060.190.21 5 Additional Wet Room0.24 6 Additional Wet Room0.27Airflow (C.F.M.)0Static Pressure (Pa)PaTrickle Speed(full adjustable)260227198162122800.19255075100125150175 200 225 250 275 325 300 3503501.43001.22501.02000.8SL1 & SL2 Speed Band1500.61000.450Static Resistance (w.g)Locations & Dimensions (mm) 3 Additional Wet Room510mm Long-life, low-energy EC motors. Low-profile design – only 190mm in height. Six 125mm Ø extract spigots and one 125mm Ødischarge spigot. Supplied with four blanking plates to cover spigotconnections that aren’t needed.0.21100% Variable 1 Additional Wet RoomE.S.T BestPerformance CompliantXplus 2 EC models boast all of the benefits that centralisedextraction systems offer – like flexible siting, multiple spigotconnections and high-performance extraction – plus the addedbenefit of long-life, energy-efficient EC motors with backwardcurved impellers. This allows these units to be configured atinstall to match the required Part F extraction rates for the sizeand layout of the dwelling, ensuring that high-quality indoor airis maintained throughout.0.2Trickle Speed Band0.00025100150200250300350400450500Airflow (m3/h)650600Trickle MaximumSpeed SL1 & SL2 MaximumCOS2 SpeedSwitch3SP-SWXPIRAPIR SensorDT20BTime DelayUnitRemoteHumidistatAir 71AA21850AW21856AW92097AW90199AW 3 SpeedSwitchXRHAQSMOS9