NuAire mrXbox70 Installation And Maintenance Manual

NuAire mrXbox70 Installation And Maintenance Manual Manual pdf 1 page image

Nuaire 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 Leaflet Number 671365 October 2009mrXbox70Mechanical Ventilationwith Heat RecoveryInstallation and MaintenanceFigure 2. Fixing the unit to the wall.Figure 1.Two mountingbracket tonguesengage with slotsin top edge of unitcasing.Align bottom ofmounting bracketto engage with thefixing screw holeson the base of theunit.Brackettonguesfixing screw holes arelocated in base of unit.Figure 4.Cut through theacoustic foam roundthe circumference ofthe damper.Damper can beswivelled on the2 body casinghinges.Figure 5.When spigot is inposition, damper canbe adjusted using ascrewdriver.1.0 IntroductionmrXbox70 is designed to provide mechanical supply andextract ventilation with heat recovery.The unit is fitted with two independent fans. Each fan hasfull speed control for background and boost ventilationrates as well as a run-on timer facility. To recover heatfrom the extract air an aluminium heat exchanger block isutilised. This heat exchanger can recover over 70% of thenormally wasted heat.2.0 InstallationInstallation must be carried out by competent personnel inaccordance with the appropriate authority and conformingto all statutory governing regulations.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.The fan must be installed indoors, awayfrom any direct sources of heat, waterspray or moisture generation.Temperature range –5 to 40OC.The unit is designed for wall mounting only.The integral mounting bracket should beoffered up to the wall and the fixing pointsmarked through and the bracket installedwith 4 screws (by others). (figure 2).To aid installation the case is split intotwo halves. To split the case firstly removethe front cover. Remove the four lowerscrews and loosen the top two.The top section can now be removed. Therear section can be offered up to thebracket and secured with the two screws(see figure 3).Note: Carry out all required electrical connectionsbefore fitting the front section. Refer to section 4.0.Various damper/inlet spigot positions can be utilised asrequired to suit the system ductwork and extract grilles.All inlet dampers are ’closed’ as knockouts when deliveredbut can be opened using a sharp knife. (See figure 4).After the spigot has been fixed adjust the damper with ascrewdriver. (See figure 5). Fit front section and securewith screws previously removed/loosened.See figures 6 and 8 for spigot location and sizes.Figure 3.The EMC Directive2004/108/ECThe Low Voltagedirective2006/95/EC

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