NuAire MRXBOX95B-WM2 Installation And Maintenance Manual

NuAire MRXBOX95B-WM2 Installation And Maintenance Manual Manual pdf 1 page image

The unit must remain switched on at all times to maintainventilation within the dwelling. Turning the unit off willcause long term damage to the unit and building fabric.This appliance is not intended for use by persons(including children) with reduced physical, sensory ormental capabilities, or lack of experience and knowledge,unless they have been given supervision or instructionconcerning the use of the appliance by a person for theirsafety. Children should be supervised so that they do notplay with the appliance.MRXBOX95B-WM2Mechanical Ventilation Unit with Heat Recovery& Summer Bypass for Wall MountingInstallation and Maintenance1.0 IntroductionMRXBOX95B-WM2 wall mounted unit is designed to providemechanical supply and extract ventilation with heat recoveryand incorporates summer bypass.The unit is fitted with two independent fans. Each fan has fullspeed control for background and boost ventilation rates.To recover heat from the extract air the heat exchanger blockis utilised. The heat exchanger can recover up to 95% of thenormally wasted heat.The bypass damper opens automatically via a wax actuator whenthe outside air reaches 20°C, when the outer air temperaturereturns below this level the unit returns to its original state.Outside air supplied through the bypass is still being filtered,so the air quality is optimal, irrespective of the bypass setting(open or closed)2.0 InstallationInstallation must be carried out by competent personnel inaccordance with the appropriate authority and conformingto all statutory governing regulations. All mains wiring mustbe in accordance with the current I.E.E. Regulations, or theappropriate standards. Ensure that the mains supply(Voltage, Frequency and Phase) complies with the rating label.Please note a clear working space is required around theinstalled unit to allow the cover to be removed and providesufficient access for maintenance such as filter change.Please allow a minimum of 350mm in front of the unit.The fan must be installed indoors, on a suitable wall awayfrom direct sources of frost, heat, water spray or moisturegeneration. For a vibration-free result the unit must bemounted to a solid wall.The unit is designed for wall mounting only via a patress.1. One part of the mounting bracket should be offered up tothe wall, ensuring it’s located horizontally. Mark the fixingpoints through the pre drilled holes in the bracket andinstall with screws (by others), ensuring the interlock sideis at the top, fig. 2.2. Fix the remaining part of the bracket to the unit using theM5 screws ensuring the interlock side is at the bottom, fig.3a.3. Install the unit on the wall by ensuring the bracket on theunit interlocks over the wall mounted bracket (fig. 3b).Note: Care must be taken to ensure the unit is installed truein all 3 dimensions. Failure to do so may result in overflowfrom the internal condensation drip tray.Nuaire Limited Western Industrial Estate Caerphilly United Kingdom CF83 1NAT: 029 2085 8400 F: 029 2085 8444 E: info@nuaire.co.uk W: www.nuaire.co.uk1 21. 06. 13. Leaflet Number 671595Extract airfrom houseIntake airfrom outsideExhaust airfrom houseto outside Supply airto houseFigure 1. Airflow through unit.The EMC Directive2004/108/ECThe Low VoltageDirective2006/95/ECFigure 3a. Fixing the mountingbracket to the rear of unit.Pre-fittedsupport feetBracketFigure 3b. Mounting the uniton the wall mounted bracket.Figure 2. Fixing the mounting bracket to the wall via a patress.125mm dia.ducting inceiling void.First floor ceiling.Side view of unitmounted on thewall in a cupboard.(Note: The unit mustbe fixed to a suitablepatress).MVHR-DRAINCondensate drain,uninsulated drainpipe with 10 fallrunning to SVP.oSupply air valve in ceiling.Figure 4. Typical example of a cupboard mounted unit on a patressusing the bracket.