NuAire MRXBOX95B-450 WC Installation And Maintenance Manual

NuAire MRXBOX95B-450 WC Installation And Maintenance Manual Manual pdf 1 page image

The EMC Directive2014/30/EUThe Low VoltageDirective2014/35/EUThe unit must remain switched on at all times to maintain ventilationwithin the dwelling. Turning the unit off will cause long term damage tothe unit and building fabric.This appliance is not intended for use by persons (including children)with reduced physical, sensory or mental capabilities, or lack ofexperience and knowledge, unless they have been given supervision orinstruction concerning the use of the appliance by a person for theirsafety. Children should be supervised so that they do not play withthe appliance.MRXBOX95B-450 WC and 450Mechanical Ventilation Unit with Heat Recovery andSummer Bypass for Wall MountingInstallation and Maintenance27. 11. 17. Leaflet number 671617Ducting inceiling void.Side view of unitmounted on thewall in a cupboard inupright position asshown to complywith safety regulations.Condensate drain,uninsulated drainpipe with min 5o fallrunning to a soilvent pipe.Valve in ceiling.Extract airfrom houseIntake airfrom outsideExhaust airfrom houseto outside Supply airto houseUnit weight is 30kg.1.0 IntroductionThe MRXBOX95B-450 WC and MRXBOX95B-450 wall mountedunits are designed to provide mechanical supply and extractventilation with heat recovery and summer bypass.It also incorporates an integral humidistat and frost protection(-5 degrees C as standard).The unit is supplied with independent control for both supply andextract for 3 speeds.To recover heat from the extract air the heat exchanger block isutilised. The heat exchanger can recover up to 95% of the normallywasted heat.Figure 1. Airflow through unit in standard configuration.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 installed unitto allow the cover to be removed and provide sufficient access formaintenance such as filter change.Please allow a minimum of 600mm in front of the unit and 200mmon the humidistat adjustment side. The (450 WC unit only) will alsorequire a minimum of 400mm above the unit for access to thereceiver in its standard position. Alternatively, the receiver may befitted away from the unit as it is wired with a flying lead.The fan must be installed indoors, on a suitable wall away from directsources of frost, heat, water spray or moisture generation.For a vibration-free result the unit must be mounted to a solid wall.The unit is designed for wall mounting only on a solid wall, a gypsumblock or a stud wall will not suffice. Additional measures such asextra studs or double panelling using 20mm MDF is required.1. One part of the mounting bracket should be offered up to thewall, 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. 2).2. Install the unit on the wall by ensuring the bracket on the unitinterlocks over the wall mounted bracket (fig. 3).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.Figure 2. Fixing the mounting bracket to the wall.Figure 3. Mounting the unit on the wall mounted bracket.Figure 4. Typical example of a cupboard mounted unit on a wall usingthe bracket.Nuaire: 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.uk1