General Safety InformationDANGER• Always disconnect power before working on ornear this equipment. Lock and tag the disconnectswitch or breaker to prevent accidental power up.• If this unit is equipped with optional gasaccessories, turn off gas supply whenever poweris disconnected.CAUTIONThis unit is equipped with a compressed refrigerantsystem. If a leak in the system should occur,immediately evacuate and ventilate the area. AnEPA Certified Technician must be engaged to makerepairs or corrections. Refrigerant leaks may alsocause bodily harm.CAUTIONWhen servicing the unit, the internal componentsmay be hot enough to cause pain or injury. Allowtime for cooling before servicing.Only qualified personnel should install and maintainthis system. Personnel should have a clearunderstanding of these instructions and shouldbe aware of general safety precautions. Improperinstallation can result in electric shock, possible injurydue to coming in contact with moving parts, as well asother potential hazards. Other considerations may berequired if high winds or seismic activity are present.If more information is needed, contact a licensedprofessional engineer before moving forward.1. Follow all local electrical and safety codes, aswell as the National Electrical Code (NEC), theNational Fire Protection Agency (NFPA), whereapplicable. Follow the Canadian Electric Code(CEC) in Canada.2. All moving parts must be free to rotate withoutstriking or rubbing any stationary objects.3. Unit must be securely and adequately grounded.4. Do not spin wheel faster than maximumcataloged fan RPM. Adjustments to fan speedsignificantly affect motor load. If the fan RPM ischanged, the motor current should be checkedto make sure it is not exceeding the motornameplate amps.5. Verify that the power source is compatible withthe equipment.6. Never open access doors to the unit while it isrunning.Installation, Operation and Maintenance ManualPlease read and save these instructions for future reference. Read carefully before attempting to assemble,install, operate or maintain the product described. Protect yourself and others by observing all safetyinformation. Failure to comply with instructions could result in personal injury and/or property damage!1Model MPX Make-Up Air UnitModel XMPX Make-Up Air UnitPart #475084Model XMPXModel XMPX