Carrier 50SZ Guide User Manual

50SZSINGLE-PACKAGEDHEAT PUMP UNITS2 to 5 Nominal TonsProduct Data Single-Packaged Heat Pump for Residential and Light Commercial Applications• Low Sou

1050SZ50SZ Corner weights ( In Pounds)I Determine cooling and heating requirements at design conditions:Given:Required Cooling Capacity (TC) . . . .

1150SZPerformance dataCOOLING EXTENDED PERFORMANCE TABLEHEATING EXTENDED PERFORMANCE TABLE -10–20HEATING EXTENDED PERFORMANCE TABLE 30–60See Legend an

1250SZPerformance data (cont)COOLING EXTENDED PERFORMANCE TABLEHEATING EXTENDED PERFORMANCE TABLE -10–20HEATING EXTENDED PERFORMANCE TABLE 30–60See Le

1350SZPerformance data (cont)COOLING EXTENDED PERFORMANCE TABLEHEATING EXTENDED PERFORMANCE TABLE -10–20HEATING EXTENDED PERFORMANCE TABLE 30–60See Le

1450SZPerformance data (cont)COOLING EXTENDED PERFORMANCE TABLEHEATING EXTENDED PERFORMANCE TABLE -10–20HEATING EXTENDED PERFORMANCE TABLE 30–60See Le

1550SZPerformance data (cont)COOLING EXTENDED PERFORMANCE TABLEHEATING EXTENDED PERFORMANCE TABLE -10–20HEATING EXTENDED PERFORMANCE TABLE 30–60See Le

1650SZPerformance data (cont)COOLING EXTENDED PERFORMANCE TABLEHEATING EXTENDED PERFORMANCE TABLE -10–20HEATING EXTENDED PERFORMANCE TABLE 30–60See Le

1750SZ

1850SZPerformance data (cont)ECONOMIZER 1-in. FILTER PRESSURE DROP (in. wg)MULTIPLICATION FACTORSExample: 20 kW (at 240v) heater on 230v= 20.0 (.92 mu

1950SZWET COIL AIR DELIVERY UNIT 50SZ024-060**Air delivery values are based on operating voltage of 230 v, wet coil, without filter or electric heater

250SZ ambient kit is available as a field-installed accessory and does not require a special motor. Corporate thermostats work with Carrier’s small p

2050SZINDOORTHERMOSTATDISCONNECTPER NECFROMPOWERSOURCERETURNAIRTOP COVERTypical piping and wiring

2150SZCondensate trap — A 2-in. condensate trap must be fieldsupplied.Ductwork — Secure downflow discharge ductwork to roofcurb. For horizontal discharg

2250SZElectrical Data*Heater capacity (kW) based on heater voltage of 208v, 240v, & 480v. If power distribution voltage to unit varies from rated

2350SZElectrical Data Legend452=5v457=7v455=2vLEGENDFLA — Full Load AmpsLRA — Locked Rotor AmpsMCA — Minimum Circuit AmpsMOCP — Maximum Overcurrent Pr

2450SZ

2550SZSequence of operationWhen power is supplied to unit, the transformer (TRAN) isenergized.On units with crankcase heater, heater is also energized

2650SZPackaged Heat PumpsConstant Volume ApplicationHVAC Guide SpecificationsSize Range: 2 to 5 Tons, Nominal CoolingCarrier Model Number: 50SZPart 1—

2750SZ2. All fan motors shall have permanently lubricatedbearings, and inherent, automatic reset, thermaloverload protection.3. Condenser fan motor sh

Copyright 2005 Carrier Corp. • 7310 W. Morris St. • Indianapolis, IN 46231 Printed in U.S.A. edition date: 01/06Manufacturer reserves the right to cha

350SZ Model number nomenclatureARI* capacities COOLING CAPACITIES AND EFFICIENCIES 50SZ 024Model No. 50SZ – Single Packaged Heat Pump Nomi

450SZ OUTDOOR SOUND: OCTAVE BAND DATA—DECIBELS Physical data * Air filter pressure drop for non-standard filters must not exceed 0.08 in. wg. UNIT 50S

550SZ Factory-installed optionsLouvered grille provides hail and vandalism protection. A wire grille is standard on all models. See model number nom

650SZECONOMIZERFILTER RACK MANUAL OUTSIDE AIR DAMPERDAMPERBLADEMANUAL OUTSIDEAIR HOODREPLACEMENTPANEL

750SZBase unit dimensions—50SZ024-030REQUIRED CLEARANCE FOR OPERATION AND SERVICINGINCHES [mm]EVAP. COIL ACCESS SIDE...

850SZBase unit dimensions—50SZ036-060REQUIRED CLEARANCE FOR OPERATION AND SERVICINGINCHES [mEVAP. COIL ACCESS SIDE...

950SZAccessory dimensionsNOTES:1. Roof curb must be set up for unit being installed.2. Seal strip must be applied, as required, to unit being installe