NuAire MRXBOX95-WH1 Installation And Maintenance Manual

Contents

NuAire MRXBOX95-WH1 Installation And Maintenance Manual Manual pdf 1 page image

1.0 IntroductionThe WH1 wall mounted range of units is designed to providemechanical supply and extract ventilation with heat recovery.The unit is fitted with two independent fans. Each fan has full speedcontrol for background and boost ventilation rates.To recover heat from the extract air the heat exchanger block isutilised. The heat exchanger can recover up to 95% of the normallywasted heat.If the unit has integral automatic HX bypass (AB models only)The bypass damper shall open automatically via a wax actuatorallowing the air to bypass the heat exchanger to deliver freshfiltered air during the warmer months.2.0 InstallationInstallation must be carried out by competent personnel inaccordance with the appropriate authority and conformingto all statutory governing regulations. All mains wiring must be inaccordance with the current I.E.E. Regulations, or the appropriatestandards. Ensure that the mains supply (Voltage, Frequency andPhase) complies with the rating label.Please note a clear working space is required around the installedunit to allow the cover to be removed and provide sufficient accessfor maintenance such as filter change.Please allow a minimum of 430mm in front of the MRXBOX95-WH1unit and 360m in front of the MRXBOX95AB-WH1.The fan must be installed indoors, on a suitable wall away fromdirect sources of frost, heat, water spray or moisture generation.For a vibration-free result the unit must be mounted to a solid wall.2.1 Wall Mounting the MVHR UnitThe unit is designed for wall mounting, only on a solid wall.A gypsum block or stud/plasterboard wall will not suffice.1. One part of the mounting bracket (supplied) should be offered upto the wall, ensuring it’s located horizontally. Mark the fixing pointsthrough the pre drilled holes in the bracket and install with screws(by others), ensuring the interlock side is at the top, (fig. 3).Figure 3. Fixing the mounting bracket to the wall.2. Install the unit on the wall by ensuring the bracket fixed to therear of the unit interlocks over the wall mounted bracket (fig. 4).Figure 4. Mounting the unit on the wall mounted bracket.Note: Care must be taken to ensure the unit is installed true inall 3 dimensions. Failure to do so may result in overflow from theinternal condensation drip tray.(See overleaf for mounting option details, on walls orin the loft space).The unit must remain switched on at all times to maintainventilation within the dwelling. Turning the unit off will causelong term damage to the unit and building fabric.This appliance is not intended for use by persons (includingchildren) with reduced physical, sensory or mental capabilities,or lack of experience and knowledge, unless they have beengiven supervision or instruction concerning the use of theappliance by a person for their safety. Children should besupervised so that they do not play with the appliance.Installation and MaintenanceMRXBOX95-WH1 (Standard Unit)MRXBOX95-WH1-OH (Opposite hand Unit)MRXBOX95AB-WH1 (Standard Unit)MRXBOX95AB-WH1-OH (Opposite hand Unit)Mechanical Ventilation Units with Heat Recovery for Wall Mounting1 27. 11. 17. Leaflet Number 671686Extract airfrom houseIntake airfrom outsideExhaust airfrom houseto outside Supply airto houseFigure 1. Airflow through unit (Standard unit).Figure 2. Airflow through OH unit (Opposite hand unit).Intake airfrom outsideExtract airfrom houseSupply airto house Exhaust airfrom houseto outsideThe EMC Directive2014/30/EUThe Low VoltageDirective2014/35/EUNuaire: A Trading Division of Polypipe Limited Western Industrial Estate Caerphilly United Kingdom CF83 1NAT: 029 2088 5911 F: 029 2088 7033 E: info@nuaire.co.uk W: www.nuaire.co.uk