Carrier SINGLE PACKAGED ELECTRIC COOLING UNITS 50GX Manuel d'utilisateur

ProductData 50GXSingle-PackageElectric CoolingUnits 2 to 5 Nominal Tons Copyright 1999 Carrier Corporation Form 50GX-1PD Single packaged Cooling Unit

10I Determine cooling and heating requirements at design conditions:Given:Required Cooling Capacity (TC) . . . . . . . . . 35,000 BtuhSensible Heat

11Performance dataNET COOLING CAPACITIESSee Legend and Notes on page 13.50GX024Temp (F)Air EntCondenserEvaporator Air—Cfm/Bypass Factors—BF700/0.081 8

12Performance data (cont)NET COOLING CAPACITIES (cont)See Legend and Notes on page 13.50GX036Temp (F)Air EntCondenserEvaporator Air—Cfm/Bypass Factors

13Performance data (cont)NET COOLING CAPACITIES (cont)LEGENDBF—Bypass FactorEwb—Entering Wet-BulbkW—Total Unit Power InputSHC—Sensible Heat Capacity (

14WET COIL DELIVERY—HORIZONTAL AND DOWNFLOW DISCHARGE UNIT 50GX024-060NOTE: Deduct 10% For 208v.230 AND 460 VOLTUnit 50GXMotor SpeedExternal Static Pr

15Performance data (cont)ECONOMIZER 1-in. FILTER PRESSURE DROP (in. wg)OUTDOOR SOUND: ONE-THIRD OCTAVE BAND DATA—DECIBELSBels — Sound Levels (1 bel =

16INDOORTHERMOSTATDISCONNECTPER NECFROMPOWERSOURCERETURNAIRTOP COVERTypical piping and wiringVERTICAL DISCHARGE

17Condensate trap — A 2-in. condensate trap must be fieldsupplied.Ductwork — Secure downflow discharge ductwork to roofcurb. For horizontal discharge ap

18Electrical dataSee Legend and Notes on p. 19UNITSIZE50GXV-PH-HzVOLTAGERANGECOMPRESSOROUTDOORFAN MOTORINDOORFAN MOTOR ELECTRIC HEAT POWER SUPPLYMin M

19LEGENDFLA — Full Load AmpsHACR — Heating, Air Conditioningand RefrigerationLRA — Locked Rotor AmpsMCA — Minimum Circuit AmpsMOCP — Maximum

2 Direct-drive, PSC condenser-fan motors are designed to help reduce energy consumption and provide for cooling operation down to 55°F outdoor tempe

20Typical wiring schematic — 208/230-1-60 shown

21Typical wiring schematic — 208/230-3-60 shown

22Typical wiring schematic — 460-3-60 shown

23Operating sequenceCooling — When the system thermostat calls for cooling, 24V is supplied to the “Y” and “G” terminals of the thermostat.This comple

24Packaged Electric Cooling Units Constant Volume ApplicationHVAC Guide SpecificationsSize Range: 2 to 5 Tons, Nominal CoolingCarrier Model Number: 50

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

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Carrier Corporation • Indianapolis, IN 46231 4/00Manufacturer reserves the right to discontinue, or change at any time, specifications or designs wit

3 Model number nomenclatureARI* capacities COOLING CAPACITIES AND EFFICIENCIES 50GX 024Model No. 50GX – Single Package-----------Electric Cooling Nom

4 Physical data * Required filter sizes shown are based on the larger of the ARI (Air Conditioning & Refrigeration Institute) rated cooling airflow

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

6 ECONOMIZERFILTER RACK MANUAL OUTSIDE AIR DAMPERDAMPERBLADEMANUAL OUTSIDEAIR HOODREPLACEMENTPANEL7

7 Base unit dimensions—50GX024-036REQUIRED CLEARANCE FOR OPERATION AND SERVICINGMILLIMETERS [IN.]EVAP. COIL ACCESS SIDE...

8 Base unit dimensions—50GX024-036REQUIRED CLEARANCE FOR OPERATION AND SERVICINGMILLIMETERS [IN.]EVAP. COIL ACCESS SIDE...

9 Accessory dimensions3.0"4.0"BASE PANBOTTOM SUPPLY0.75"SIDE PANELSUPPORT RIB(S)COUNTER FLASHING(FIELD SUPPLIED)NAILERROOFING FELT(FIE