NuAire MRXBOX95B-LPIH Installation And Maintenance Manual

NuAire MRXBOX95B-LPIH 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-LP1HMechanical Ventilation Unit with Heat RecoverySummer Bypass & Integral HumidistatInstallation and MaintenanceNuaire 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 24. 06. 13. Leaflet Number 671607Spigot 1.Spigot 4.Spigot 3.Spigot 2.Figure 1. Airflow through unit.Spigots 1 to 41. Intake air (Fresh Air from outside).2. Supply Air (Supply in to house).3. Extract Air (Warm air from house).4. Exhaust Air (Waste air to outside).The EMC Directive2004/108/ECThe Low VoltageDirective2006/95/ECFigure 2. Installing the unit using appropriate fixing bolts.204 x 60mmducting inceiling void.Side view of unitmounted in the ceiling void.Air valvein ceiling.Figure 3. Typical side view example of a unit mounted in a ceilingvoid using 204 x 60mm rectangular ducting and air valves.Steel mounting bracketNote: The unit must be installed in an upright position asshown for the condensate drain and for compliance with safetyregulations relating to IP protection for water drip ingress.1.0 IntroductionMRXBOX95B-LP1H ceiling void mounted unit is designed toprovide mechanical supply and extract ventilation with heatrecovery, summer bypass & incorporates integral humidistat.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 80% 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).The unit is fitted with a frost protection mode, in the event of thefresh air temperature dropping below -5 Deg C the supply fan willswitch off. The unit will then automatically switch back on whenthe temperature raises back above -5 Deg C.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.The fan must be installed indoors, in a suitable ceiling voidaway from direct sources of frost, heat, water spray ormoisture generation. For a vibration-free result the unit mustbe mounted to a solid surface in the void.The unit is designed for ceiling mounting only (Horizontalsurface).1. The unit is supplied with a steel mounting bracket.2. Position & secure the steel bracket to the ceiling usingappropriate fixings (supplied by others), ensuring that thetwo outer fixing holes on the unit are accessible.Note: The mounting bracket should be on the same side as thecondensate take off.3. The unit can now be offered into position & located into themounting bracket.4. Using appropriate fixings (supplied by others), fix the unit tothe ceiling. It is recommended that the unit is fixed throughthree holes on the non-bracket side and the two outer holes onthe bracket side.