Carrier 48HX User Manual

Dual Fuel Heat Pump for Manufac-tured Housing/Residential and LightCommercial Use. Features:• direct spark ignition• scroll compressors• low sound lev

Accessory dimensionsROOF CURBPART NUMBER ‘‘A’’FLATCPRFCURB001A00 89 [203]CPRFCURB002A00 119 [279]CPRFCURB003A00 149 [356]NOTES:1. Roof curb must be se

Selection procedure (with example)I Determine cooling and heating requirements atdesign conditions:Given:Required Cooling Capacity (TC) ...34,000 B

Performance dataCOOLING CAPACITIES48HX030 (21⁄2TONS)Temp (F)Air EntCondIndoor Air — Cfm/BF875/0.04 1000/0.05 1125/0.06Indoor Air — Ewb (F)72 67 63* 62

HEATING CAPACITIES48HX030 (21⁄2TONS)Cfm(StdAir)ReturnAir(F db)Temperature Air Entering Outdoor Coil (F db at 7% rh)−100 10172030404750607087560Cap. 7.

Performance data (cont)HEATING CAPACITIES (cont)48HX048 (4 TONS)Cfm(StdAir)ReturnAir(F db)Temperature Air Entering Outdoor Coil (F db at 7% rh)−100 10

DRY-COIL AIR DELIVERY* — HORIZONTAL AND DOWNFLOW DISCHARGE AT 230 AND 460 V; SIZES 030,036(Deduct 10% from Cfm and Watts for 208 V Operation)UNIT48HXM

Performance data (cont)WET COIL PRESSURE DROPUNIT SIZEAIRFLOW(cfm)PRESSURE DROP(in. wg)030800 0.025900 0.0391000 0.0571200 0.0720361000 0.0681200 0.09

Typical piping and wiringPower WiringControl WiringOutdoor AirflowIndoor AirflowNEC — National Electrical CodeHORIZONTAL DISCHARGEDOWNFLOW DISCHARGE17

Electrical dataUNITSIZEV-PH-HzVOLTAGE RANGE COMPRESSOROUTDOOR-FAN MOTORINDOOR-FAN MOTORPOWER SUPPLYAWG60CMIN WIRESIZEMAX WIRELENGTH (ft)Min Max RLA LR

ControlsSequence of operationHeating Sequence of Operation — On a call for heat,one of 2 Heating modes occurs, depending on the field set-ting of the e

Energy-saving, direct-spark ignitionsaves gas by operating only when theroom thermostat calls for emergencyheating or when low outdoor tempera-tures r

Typical wiring schematic — size 030,036 shown208/230-1-6020

Guide specificationsPackaged Dual Fuel Heat Pump ConstantVolume ApplicationHVAC Guide SpecificationsSize Range: 21⁄2to 5 Tons, Nominal Cooling40,000 to

Guide specifications (cont)2. Safeties:Compressor, overtemperature, overcurrent, andloss-of-charge.J. Operating Characteristics:1. Unit shall be capabl

Carrier Corporation • Syracuse, New York 13221 4-95Manufacturer reserves the right to discontinue, or change at any time, specifications or designs wit

Model number nomenclatureARI* capacitiesCOOLING AND HEAT PUMP HEATING CAPACITIES AND EFFICIENCIESUNIT48HXNOMINALTONSSTANDARDCFMNET COOLING†CAPACITIESA

Physical dataUNIT SIZE 48HX 030040 030060 036060 036080 048080 048100 060080 060100NOMINAL CAPACITY (tons) 21⁄221⁄2334455OPERATING WEIGHT (lb)Without

Options and accessoriesFactory-installed optionsUnit with base rail provides holes for rigging and han-dling as well as an elevated mounting frame tha

Base unit dimensions — 48HX030 and 036REQ’D CLEARANCES FOR SERVICING. in. (mm)Duct panel ...0Unit top ...

UNIT WITH OPTIONAL BASE RAILREQ’D CLEARANCES FOR SERVICING. in. (mm)Duct panel ...0Unit top ...36(914

Base unit dimensions — 48HX048 and 060UNIT WITHOUT BASE RAILREQ’D CLEARANCES FOR SERVICING. in. (mm)Duct panel ...0Unit top

REQ’D CLEARANCES FOR SERVICING. in. (mm)Duct panel ........0Unit top .......36(914.4)Side opposite ducts ...