Carrier 50JZ Product Data

Also see for 50JZ 024-060: Installation and operating instructions Guide to operating and maintaining Guide to operating and maintaining Product data Installation, Start-Up and Service Instructions

Contents

Carrier Corporation • Indianapolis, IN 46231 7/00Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.Book 1 4 Page 28 Catalog No. 525-087 Printed in U.S.A. PC 102 Form 50JZ-1PDTab 5b 5a Replaces: NEW2. All fan motors shall have permanently lubricatedbearings, and inherent, automatic reset, thermaloverload protection.3. Outdoor fan motor shall be totally enclosed.L. Grille1. Louvered Grille:Louvered grille shall be standard on all units.M. Special Features Available1. Coil Options:Shall include factory-installed optional copper/copper and vinyl-coated refrigerant coils.2. Economizer:a. Economizer controls capable of providing freecooling using outside air.b. Equipped with low leakage dampers not to ex-ceed 3% leakage, at 1.0 in. wg pressure differen-tial.c. Spring return motor shuts off outdoor damper onpower failure.3. Flat Roof Curb:Curbs shall have seal strip and a wood nailer forflashing and shall be installed per manufacturer’sinstructions.4. Manual Outdoor Air Damper:Package shall consist of damper, birdscreen, andrainhood which can be preset to admit outdoor airfor year-round ventilation.5. Thermostat:To provide for one-stage heating and cooling in ad-dition manual or automatic changeover and indoorfan control.6. Low Ambient Package:Shall consist of a solid-state control and condensercoil temperature sensor for controlling condenser-fan motor operation, which shall allow unit to oper-ate down to 0° F outdoor ambient temperature incooling.7. Filter Rack Kit:Shall provide filter mounting for downflow applica-tions.8. Square-To-Round Duct Transitions:Shall have the ability to convert the supply and re-turn openings from rectangular to round. (024-048only)9. Compressor Protection:Solid-state control shall protect compressor by pre-venting “short cycling.”10. Crankcase Heater:Shall provide anti-floodback protection for low-load cooling applications. (Standard on 042-060sizes)11. Electric heaters:a. Electric heater shall be available as a field-installed option.b. Heater elements shall be open wire type, ade-quately supported and insulated with ceramicbushings.c. Electric heater packages must provide singlepoint power connection capability.12. Compressor Hard start kit:Shall be available to give a boost to the compressormotor at each start-up.Guide specifications (cont)

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