Carrier SINGLE PACKAGED ELECTRIC COOLING UNITS 50GS Installation And Operating Instructions Manual

Also see for 50GS018 Guide: Manual

Contents

CONFIGURING UNITS FOR DOWNFLOW (VERTICAL) DIS-CHARGEBefore performing service or maintenance operations on thesystem, turn off main power to unit and install lockout tag orelectrical shock could result.1. Open all electrical disconnects and install lockout tag beforestarting any service work.2. Remove return duct cover located on duct panel by breakingfour (4) connecting tabs with screwdriver and a hammer. (Fig.8 & 9)3. To remove supply duct cover, break front and right sideconnecting tabs with a screwdriver and a hammer. Push louverdown to break rear and left side tabs. (Fig. 8 & 9)4. If unit ductwork is to be attached to vertical opening flangeson the unit composite base (jackstand applications only), do soat this time. Collect ALL screws that were removed. Do notleave screws on rooftop as permanent damage to the roof mayoccur.Table 1—Physical Data—Unit 50GSUNIT SIZE 018 024 030 036 042 048 060NOMINAL CAPACITY (ton) 1-1/2 2 2-1/2 3 3-1/2 4 5OPERATING WEIGHT (lb.) 254 260 258 268 294 324 389COMPRESSOR Reciprocating Scroll ReciprocatingREFRIGERANT (R-22)Quantity (lb.) 2.6 3.5 3.65 4.4 6.4 5.1 7.4REFRIGERANT METERING DEVICEOrifice ID (in.)Accurater.034 .034 .034 .032 .034 .032 .030CONDENSER COILRows...Fins/in.Face Area (sq. ft.)1...176.11...179.11...179.11...1710.91...179.11...1712.32...1712.3CONDENSER FANNominal CfmDiameterMotor Hp (Rpm)2000221/8 (825)2400221/8 (825)2400221/8 (825)3000181/4 (1100)3000221/4 (1100)3600221/4 (1100)3600221/4 (1100)EVAPORATOR COILRows...Fins/in.Face Area (sq. ft.)2...153.12...153.12...153.73...153.064...153.063...154.74...154.7EVAPORATOR BLOWERNominal Airflow (Cfm)Size (in.)Motor HP (RPM)60010x101/4 (825)80010x101/4 (1075)100010x101/4 (1075)120011x101/2 (1075)140011x103/4 (1075)160011x103/4 (1075)200011x101.0 (1100)RETURN-AIR FILTERS (in.)*Throwaway 20x20 20x20 20x20 20x24 20x24 24x30 24x30* Required filter sizes shown are based on the larger of the ARI (Air Conditioning and Refrigeration Institute) rated cooling airflow or the heating airflow velocity of 300ft./min. for throwaway type or 450 ft./min. for high-capacity type. Air filter pressure drop for non-standard filters must not exceed 0.08 in. wg.Table 2—Physical Data—Unit 50GXUNIT SIZE 024 030 036 042 048 060NOMINAL CAPACITY (ton) 2 2-1/2 3 3-1/2 4 5OPERATING WEIGHT (lb.) 270 291 299 321 326 399COMPRESSOR ScrollREFRIGERANT (R-22)Quantity (lb.) 3.7 4.4 5.2 7.6 8.3 8.1REFRIGERANT METERING DEVICEOrifice ID (in.)Accurater.034 .030 .032 .034 .034 .032CONDENSER COILRows...Fins/in.Face Area (sq. ft.)1...1710.81...1712.72...179.12...179.12...1712.32...1716.4CONDENSER FANNominal CfmDiameter (in.)Motor Hp (Rpm)2350221/8 (825)2350221/8 (825)2350221/8 (825)3300221/4 (1100)3300221/4 (1100)3300221/4 (1100)EVAPORATOR COILRows...Fins/in.Face Area (sq. ft.)3...153.13...153.13...153.73...154.74...154.74...154.7EVAPORATOR BLOWERNominal Airflow (Cfm)Size (in.)Motor Hp (RPM)80010x101/4 (1075)100010x101/4 (1075)120011x101/2 (1075)140011x103/4 (1075)160011x103/4 (1075)175011x101.0 (1040)RETURN-AIR FILTERS (in.)*Throwaway 20x20 20x20 20x24 20x30 24x30 24x30* Required filter sizes shown are based on the larger of the ARI (Air Conditioning and Refrigeration Institute) rated cooling airflow or the heating airflow velocity of 300ft./min. for throwaway type or 450 ft./min. for high-capacity type. Air filter pressure drop for non-standard filters must not exceed 0.08 in. wg.8