Carrier 48SX User Manual

Single-Package Rooftop Productswith Energy-Saving Features• direct spark ignition• low sound levels• 81% AFUE on most units• 10 SEERFeatures/BenefitsOn

Base unit dimensions (cont)48SS048,060 WITHOUT OPTIONAL BASE RAILREQ’D CLEARANCES FOR SERVICING. in. (mm)Duct panel ...0Unit top .

48SS048,060 WITH OPTIONAL BASE RAILREQ’D CLEARANCES FOR SERVICING. in. (mm)Duct panel ...0Unit top ...36(914)S

Accessory dimensionsROOF CURB DIMENSIONSPART NUMBER ‘‘A’’48SSCPRFCURB001A00 89 [203]CPRFCURB002A00 119 [279]CPRFCURB003A00 149 [356]NOTES:1. Roof curb

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

Performance dataCOOLING CAPACITIES48SS018TEMP (F)AIR ENTCONDEVAP AIR — CFM/BF525/0.10 600/0.12 675/0.13Evap Air — Ewb (F)62 67 72 62 67 72 62 67 7285T

COOLING CAPACITIES (cont)48SS048TEMP (F)AIR ENTCONDEVAP AIR — CFM/BF1400/0.08 1600/0.10 1800/0.11Evap Air — Ewb (F)62 67 72 62 67 72 62 67 7285TC 43.8

Performance data (cont)DRY COIL AIR DELIVERY* — HORIZONTAL DISCHARGE(Deduct 10% for 208 v)UNITSIZE48SSMOTORSPEED230 AND 460 VOLT HORIZONTAL DISCHARGEE

DRY COIL AIR DELIVERY* — VERTICAL DISCHARGE(Deduct 10% for 208 v)UNITSIZE48SSMOTORSPEED230 AND 460 VOLT VERTICAL DISCHARGEExternal Static Pressure (in

Performance data (cont)WET COIL PRESSURE DROPUNIT SIZEAIRFLOW(cfm)PRESSURE DROP(in. wg)018600 0.069700 0.082800 0.102900 0.116024600 0.039700 0.058800

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

Energy-saving, direct-spark igni-tion saves gas by operating onlywhen the room thermostat calls forheating. Standard units are furnishedwith natural g

Application dataCondensate trap — A 2-in. condensate trap must be fieldsupplied.Ductwork — Secure downflow discharge ductwork to roofcurb. For horizont

Typical control wiring schematic,48SS018-060; 208/230-1-60LEGENDAWG — American Wire GageBR — Blower RelayC—ContactorCAP — CapacitorCH — Crankcase Heat

Typical control wiring schematic,48SS030-060; 208/230-3-60LEGENDAWG — American Wire GageBR — Blower RelayC—ContactorCAP — CapacitorCH — Crankcase Heat

Typical control wiring schematic,48SS036-060; 460-3-60LEGENDAWG — American Wire GageBR — Blower RelayC—ContactorCAP — CapacitorCH — Crankcase HeaterCO

Electrical dataUNIT48SSV-PH-HZVOLTAGERANGECOMPRESSORCONDFANMOTORINDOORFANPOWER SUPPLYAWG60CMIN WIRESIZE†MAX WIRELENGTH(ft)Min Max RLA LRA FLA FLA MCA

ControlsSequence of operationHeating — On a call for heating, terminal ‘‘W’’ of the ther-mostat is energized, starting the induced-draft motor. Whenth

Guide specificationsPackaged Heating/Cooling UnitsConstant Volume ApplicationHVAC Guide SpecificationsSize Range: 11⁄2to 5 Tons, Nominal Cooling40,000 t

I. Operating Characteristics:1. Unit shall be capable of starting and running at125 F ambient outdoor temperature per maxi-mum load criteria of ARI St

Carrier Corporation • Syracuse, New York 13221 9-98Manufacturer reserves the right to discontinue, or change at any time, specifications or designs wit

Table of contentsPageFeatures/Benefits ...1,2Model Number Nomenclature ...

ARI* capacitiesCOOLING CAPACITIES AND EFFICIENCIESUNIT 48SSNOMINALTONSSTANDARDCFMNET COOLING†CAPACITIESSEER†SOUND RATINGS**(Bels)018040 11⁄2600 17,000

HEATING CAPACITIES AND EFFICIENCIESUNIT 48SSHEATING INPUT(Btuh)OUTPUT CAPACITY(Btuh)TEMPERATURERISE RANGE (°F)AFUE (%) CSE (%)01804002404003004040,000

Physical dataUNIT SIZE 48SS 018040 024040 024060 030040 030060 030080 036060 036080 036100 036120NOMINAL CAPACITY (ton) 11⁄22221⁄221⁄221⁄23333OPERATIN

Options and accessoriesFactory-installed optionsUnit with base rail provides holes for rigging and forkliftsas well as an elevated mounting frame that

Base unit dimensionsREQ’D CLEARANCES FOR SERVICING. in. (mm)Duct panel ...0Unit top ...36(914)Side opposite d

48SS018-042 WITH OPTIONAL BASE RAILREQ’D CLEARANCES FOR SERVICING. in. (mm)Duct panel .......0Unit top ......36(914)S