Carrier Weathermaster 48HJD Series Product Data

Also see for 48HJD005: Installation, Start-Up and Service Instructions

3Easy maintenance andinstallationAll units are factory shipped inthe vertical discharge configura-tion for fit-up to standard roof curbs.(One accessory curb fits sizes 004-007; another accessory curb fits sizes008-014.) Contractors can order andinstall the roof curbs early in the con-struction stage, before decisions onsize requirements have been made.All units feature roll-formed base-rail design with forklift slots on 3 sidesof the unit and rigging holes for easiermaneuvering and installation. Stretch-wrap packaging protects the unit dur-ing shipment and storage.Units are easily converted fromvertical to horizontal applications tomake retrofit and add-on jobs easier.To convert from vertical to horizontaldischarge, simply relocate 2 panels.The same basic unit can be used for avariety of applications and can bequickly modified at the jobsite.Standard high-performance, high-static, belt-driven evaporator-fanmotors enable 48HJ004-014 unitsto operate in most ductworkconfigurations.Ductwork connections are madeeasy by the logical 2 to 1 aspect ratio.On vertical discharge units, ductworkattaches directly to the roof curb.Thru-the-bottom service connec-tion capability comes standard withthe rooftop unit to allow power andcontrol wiring and gas connections tobe routed through the unit’s basepan,thereby minimizing roof penetrations(to prevent water leaks). Power, gas,and control connections are made onthe same side of the unit to simplifyinstallation.The non-corrosive, sloped, con-densate drain pan is made in con-formance with ASHRAE (AmericanSociety of Heating, Refrigeration, andAir Conditioning Engineers) Standard62 to meet many Indoor-Air Quality(IAQ) specifications. The condensatedrain pan offers both bottom and enddrain capability to minimize roof pene-trations. The bottom drain can be usedin conjunction with thru-the-bottomconnections. An external trap must befield supplied.Standard 2-in. throwaway filtersare easily accessed through an easilyremovable filter access panel locateddirectly above the air intake hood; notools are required to change the filters.All units are designed with a sin-gle continuous top piece to elimi-nate leaking at the seams or gasketing.Belt-driven evaporator-fan motorsallow maximum on-site flexibility with-out changing motors or drives.Low-voltage wiring connectionsare easily made due to the large termi-nal board which is conveniently locatedfor quick, simple access.Features/Benefits (cont)FULLY MODULATING DURABLADEECONOMIZER (OPTION OR ACCESSORY)HIGH-EFFICIENCY COILSON-SITE CONVERTIBILITYFROM VERTICAL TOHORIZONTAL DISCHARGEHIGH-EFFICIENCYCOILS ANDACUTROL™REFRIGERANTMETERING DEVICESINGLE PIECETOP PANELSLEEVE BEARING PERMANENTLYLUBRICATED MOTORSSLOPED,NON-CORROSIVECONDENSATEDRAIN PANTOOL-LESSFILTER ACCESSMOISTUREMISERDEHUMIDIFICATIONPACKAGE (FACTORY-INSTALLED OPTION)