NuAire MEV-M Installation And Maintenance Manual

NuAire MEV-M Installation And Maintenance Manual Manual pdf 2 page image

500330 200 dia170BracketfixingVIEW ON 'A'(COVER REMOVED)SIDE VIEWCableentryMOUNTINGBRACKETMounting bracketFilterEND VIEWSingle screw unit fixing25020'A'1404 holes7.5 diaAIRFLOWAIRFLOW4 x Spigotknockouts100 dia1 x Spigotknockout150 dia50Installation and Maintenance MEV-M & UNITS2InstallationGeneral notes: It is assumed that a solid non-reverberantmounting position has been selected and the electrical mainswiring and any optional remote indicator wires have been madeready.It is also assumed that compatible ductwork is already installedand ready to be connected to the 200mm dia outlet and also thechosen 150mm dia and/or 100mm dia. inlets. Note the unit is notfitted with a backdraught shutter. (When using the trickle vent facilitya backdraught shutter is not needed). However a backdraught shutter isavailable from NuAire if required.Fitting the blower(s).... see fig. 6ON DELIVERY IT WILL BE NECESSARY TO FIT THEMOTOR PLATE COMPLETE WITH THE BLOWERS TOTHE PLENUM PLATE.Remove the cover. Withdraw the filter assembly from the case(push fit). Lift out the loose blower assy. Remove the two motorplate retaining screws located in the plenum plate. These will berequired to fix the motor plate. in position. Refer to Fig. 6.Locate the bottom of the motor plate into the channel in the bot-tom of the case (C) Swing up the motor plate flush to theplenum (B) Fix with the two retaining screws (A)Fit the filter assy.Spigot fixingNote it is important to have the cover screwed in position priorto knocking out 100 and 150mm dia. inlets. Without the coverfixed in position the case could be distorted during this operation.Select the chosen size balancing spigots and fix to the case usingthe holes provided.Unit fixingThe fixing bracket can be offered up to position, the fixing pointsmarked through and the bracket installed with 4 screws (by oth-ers).Offer the unit into position and locate the bracket into the slots inthe case before fixing with the single bracket fixing screw. (See fig3) Connect the ductwork to the inlet and outlet spigotsElectrical connectionWith the unit fixed in position and working from underneath theinstallation, remove the unit cover, retained by 4 screws. Bringthe external wiring through the chosen rubber cable entry grom-met (one either side, see fig 2 ).It may be found easier to remove the terminal block from thecase (2 screws) to connect external wiring. (see fig 4). To gainaccess to the terminal block, pull out the electronic control mod-ule approx. 15mm to disengage the electrical spade contacts, dis-connect the motor wiring plug(s) from the module andtemorarily remove the control module. The blockcan now be removed (2 screws) to facilitate the connection of thewiring.The earth wire MUST be connected to the Earth postprovided next to the terminal block. (Fig 4 ). Note that noearth is required to the terminal block.Refer to the electrical wiring diagrams before connecting the unit.NOTE THAT THE MAINS WIRING FOR THE UNITMUST BE FROM A FIXED WIRING INSTALLATION.Connect the wires as shown in the diagram and refit the terminalblock. Locate the control module into the blowers mouldedguides and push the module into the terminal block, engagingthe spade connectors.DimensionsFig 2Fig 3 Installing the unitinto the fixed bracket.Fig 4 Internal view. Control module hasbeen removed to access the terminal blockElectricalterminalblockCablegrommetBlower platefixing screws (2)BlowerassemblyEarthpostWeightsMEV-M 11 kgMEV-2M 12 kgMEV-M+ 12 kgNORMALBOOST858510Boost Switch (supplied).