Carrier Infinity 50DT Owner's Information Manual

Also see for Infinity 50DT: Installation instructions

normalfortheseweatherconditions.Donotattempttoremovetheicefromtheunitgrille.Thisconditionwillnotaffecttheproperfunctionoftheunitandwillclearwithinafewdays.Emergency Heating ModeIn the event of primary unit heat failure, the emergency heat modeallows your supplemental heating source to keep your home or of-fice warm until your unit can be serviced. Contact your dealer in theevent of primary unit heat failure.Emergency Cooling ModeIn the event of UI failure, the emergency cooling mode allows yourunit to keep your home or office cool until your UI can be serviced.Contact your dealer for more information.MAINTENANCE AND SERVICEThis section discusses maintenance that should be performed byyour dealer and care you, as the owner, may wish to handle for yournew unit.Routine MaintenanceAll routine maintenance should be handled by skilled, experiencedpersonnel. Your dealer can help you establish a standard procedure.FIRE, EXPLOSION HAZARDFailure to follow this warning could result in death, personalinjury and/or property damage.Do not store or use gasoline or other flammable vapors andliquids in the vicinity of this or any other appliance.To assure proper functioning of the unit, flow of condenser air mustnot be obstructed from reaching the unit. Clearance from the top ofthe unit is 48 in. (1219 mm)Clearance of at least 36 in. (914 mm) isrequired on sides except the power entry side (42 in. clearance)(1067 mm) and the duct side (12 in. minimum clearance) (305 mm).Maintenance and Care for the Equipment OwnerBefore proceeding with those things you might want to maintainvourself, please carefully consider the following:FIRE, EXPLOSION, ELECTRICAL SHOCK HAZARDFailure to follow this warning could result in personal injury,death or property damage.1. TURN OFF ELECTRICAL POWER TO YOUR UNITBEFORE SERVICING OR PERFORMINGMAINTENANCE.2. When removing access panels or performing maintenancefunctions inside your unit, be aware of sharp sheet metalparts and screws. Although special care is taken to reducesharp edges to a minimum, be extremely careful whenhandling parts or reaching into the unit.Air FiltersThe air filter(s) should be checked at least every 3 months andchanged or cleaned whenever it becomes dirty. Dirty filters produceexcessive stress on the blower motor and can cause the motor tooverheat and shut down.This unit must have an air filter in place before it can be operated.These filters should be located in at least one of two places. In manyapplications, the installer will provide return air filter grillesmounted on the wall or ceiling of the conditioned structure. In theinstance of filter grilles, the filters can simply be removed from thegrille and replaced.The other typical application is an accessory filter rack installed in-side the unit itself. The following information is given to assist inchanging filters used in these internal filter racks.Table 1 indicates the correct filter size for your unit.Table I--Indoor Air Filter DataUnit Size Filter Size50DT024-030 20x24x1 (508x610x25mm)50DT036 24x30xl (610x762x25mm)50DT042-060 24x36x1 (610x914x25mm)To replace or inspect filters in accessory filter rack:1. Remove the filter access panel (See Fig. 2) using a 5/16-in.nut driver.2. Remove the filter(s) by pulling it out of the unit. If the filter(s)is dirty, clean or replace with a new one.When installing the new filter(s), note the direction of the airflow ar-rows on the filter frame.If you have difficult?, locating your air filter(s) or have questionsconcerning proper filter maintenance, contact your dealer for in-structions. When replacing filters, always use the same size and typeof filter that was supplied originally by the installer.ACCESS PANELFILTER ACCESSPANEL _*For accessory filter rack099094Fig. 2 - Accessory Filter Rack Access Panel(Optional Louvered Panels Shown)FIRE AND UNIT OPERATION HAZARDFailure to follow this warning could result in personal injury,death or property damage.Never operate your unit without filters in place. Anaccumulation of dust and lint on internal parts of your unit cancause loss of efficiency.Fans and Fan MotorPeriodically check the condition of fan wheels and housings andfan- motor shaft bearings. Contact your dealer for the required annu-al maintenance.Indoor and Outdoor CoilsCleaning of the coils should only be done by qualified service per-sonnel. Contact your dealer for the required annual maintenance.

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