Carrier 50K User's Manual
Contents
1. Filing Instructions on Page 20 UEO Code B MSO CSD Code 13 8 INSTALLATION 50K SUPPLEMENTARY INSTRUCTION FOR 50K CONDENSERLESS UNITS The following items are included in the base unit for field installation a Discharge Line Assembly b Moisture and Liquid Indicator c Filter drier d Crankcase Heater Relay Assembly e Condenser Fan Relay Assembly NOTE One each of the above items is used on all units except the 50K16 2 compres sor model which has two each Install this unit in accordance with the instructions in the Unit Installation Instruction Book 50 8 1005 Rev except for the following items AIR COOLED CONDENSER LOCATION The air cooled condenser should not be located more than 60 feet above or 15 feet below the base unit Check the installation booklet with the condenser for installation details CRANKCASE HEATERS One crankcase heater 230 volt 1 phase 60 cycle will be factory installed on the outside of the bottom plate of each compressor The crankcase heater elements replace the need for the liquid lines sole noid valves Each crankcase heater has 36 inch leads for wiring in the field REFRIGERANT PIPING Install the hot gas and liquid line between the base unit and the external condenser for each system be ing careful to connect the correct components in each system Fig 1 through 4 shows the location of the connections at the base unit Fig 5 through 7 shows the schematic piping la2. STARTER COMPRESSOR CRANKCA SE HEATER RELAY N C PRESSURESTAT FIG 9 50K8 440 550 3 60 CONDENSERLESS 50 INSTALLATION L1 L2 L3 P L PILOT LIGHT o CONDENSER FAN 0 1 OVER LOAD RELAY COIL C COMP STARTER M F FAN STARTER THERMOSTAT CH CRANKCASE HEATER PRESSURESTAT CHR CRANKCASE HEATER RELAY KLIXON CFR CONDENSER FAN RELAY O L COMP STARTER HOLDING COIL FAN STARTER HOLDING COIL Gi LI L2 L3 FIG 10 50K12 SINGLE COMPRESSOR 208 230 3 60 SCHEMATIC DIAGRAM CONDENSERLESS 10 50K INTERNAL WIRING TO THERMOSTAT NOT FURNISHED FIELD WIRING BY CARRIER 220V CONTROL TP CIRCUIT FOR CONDENSER RELAY Fe SELECTOR p db gj SWITCH FAN MOTOR b ox boy yt RESISTOR L CONTROL LIGHT REMOVE WIRE FROM SELECTOR SWITCH TO DUAL PRESSURE STAT AT DUAL sr PRE SSURESTAT INCOMING PO 17 AND TIE IN POWER i THERMOSTAT CIRCUIT FAN MOTOR STARTER DUAL PRESSURESTAT ADDED SOLDERLESS CONNECTION anci 1 CONNECT THERMOSTAT 1 __ 5 5 RELAY MOTOR COMPRESSOR CRANKCASE HEATER FIG 11 50K12 SINGLE COMPRESSOR 208 22
3. ENG PUOUEN sozis esnj umuixeul 091911 27218 8 Inj eie deureu dozp 2 001 ut insat 438 421 9215 1102212 eu yun pu yams 343 1112112 YDUBIG 10 UMOLIS 59215 850 1015 91 JENP pue 58215 BSN 9501181191 59215 EE 1158 SEE 71 9 SPT 4 091 4756 167 061 062 081 in 2713 9554 swe ENG yua peo 11114 2 10104 09X20 I 931A XEN XEN HTEVL 09 duo s 22 D 91 91 T SALON 09 OFF 02 802 Carrier INSTALLATION 50K SIDE ELEVATION FRONT ELEVATION ALL DIMENSIONS ARE TO OUTSIDE OF CASING NOT TO OUTSIDE OF PANEL EXPANSION VALVE 8 8 p 154 uade Bel aree COMPRESSOR DISCHARGE VALVE 7 FIG 2 LOCATION OF COMPRESSO
4. 1 2 1 2 8 50 12 y Single Compressor 7 8 5 8 5 8 7 8 3 4 1 1 8 50K 16 Ea Circuit 2 Compressor 1 2 1 2 1 2 7 8 50K 16 Single Compressor 5 8 5 8 3 4 1 3 8 REFRIGERANT CHARGE TABLE 3 VALVES FOR R 500 SERVICE unit will be shipped with 2 Ib holding charge Unit Sporlan Valve of Refrigerant 22 Inthe standard installation Refrigerant 22 will be used However special 50 8 applications Refrigerant 500 may be used sult your Application Engineering Data for informa 50K 12 tion concerning the use of Refrigerant 500 When Refrigerant 500 is used change the expansion valve to the one shown in Table 3 Single Compressor 50K 16 Single Compressor PDE 13G REFRIGERANT CHARGE QUANTITY 50K 16 2 Conipressor PDE6G 2 required During operation on Refrigerant 22 the base unit alone requires the number of pounds shown in Table 1 To this add the needs for the refrigerant lines con DUAL PRESSURESTATS densers and receivers if used Stamp the number of pounds used in the blank space provided on the Adjust the pressurestats according to pressure shown nameplate in Table 4 INSTALLATION TABLE 4 High Press Switch Low Press Switch 284 364 83 218 265 67 SPORLAN SEE ALL MOISTURE AND LIQUID INDICATOR Refrig moisture and liquid indicator must be full of liquid refrigeran
5. OF SCHEMATIC PIPING FOR 50K12 AND 50K 16 SINGLE COMPRESSOR MODELS WITH 2 9AB CONDENSERS 50 INSTALLATION Carrier 9AB CONDENSER 50K BASE UNIT BLEEDER PORT LIQUID LEVEL CHECK PORT EXPANSION VALVE SIGHT GLASS FILTER DRI ER EE MUFFLER JB pue CONDENSER 1 gt GAS LINE FIG 7 SCHEMATIC PIPING FOR 50K 2 COMPRESSORS WITH TWO 2 9AB CONDENSERS 220 CONTROL CI RCUIT FOR CONDENSER FAN L OG MOTOR 070 7 SELECTOR SWITCH i I a CONTROL EE INTERNAL WIRING Ec FIELD WIRING AUT See gt peo ee b LI ECCL CRANKGASE HEATER RELAY MC EG DES ET t 1 KLIXON 2 P 101 1 B 29 COMPRESSOR MAGNE 5 ELEMENTS CRANKCASE DUAL PRESSURESTAT lt 230 1 60 FIG 8 50 8 208 220 3 60 CONDENSERLESS 50K INTERNAL WIRING FIELD WIRING HEATER ELEMENTS CRANKCASE 220 CONTROL CIRCUIT FOR CONDENSER E MAGNETIC 111 M on
6. crankcase heater elements heater relays and the condenser fan relays are to be field wired See Wiring Diagrams The crankcase heater relays are single pole single throw normally closed relays Each crankcase heater element is to be energized when its respec tive compressor is OFF The condenser fan relays S P S T Normally open are to be mounted per the condenser Installation In structions control voltage is supplied by the base unit Follow the right wiring diagram so the condenser fans will continue to run if the compres sor is shut down by one of its protective devices and the thermostat is still calling for cooling FRONT ELEVATION NOTE ALL DIMENSIONS ARE TO OUTSIDE OF CASING NOT TO OUTSIDE OF PANEL COMPRESSOR DISCHARGE VALVE I zo _ _ _ FIG 1 LOCATION OF COMPRESSOR DISCHARGE AND 110010 CONNECTIONS 50 8 Carrier INSTALLATION peiinbaa ag SMN j2euuoosIp pasny csuore eisur uo 1011281014 085814 102 sasnj 1115 0919 sjov1u02 1911816 pexoo pue Suiseud 21815 150288 18 sesng jueure e snuj Ser I 1I1 oui Jo d ouii euo 1uo11n9 120302 03 295010 pezis 24 905 sosnj
7. 0 3 60 CONDENSERLESS 11 50 Carrier P L PILOT LIGHT 0 1 OVERLOAD C COMP STARTER 220V CONTROL FAN STARTER CIRCUIT FOR CH CRANKCASE HEATER Ly L2 L CONDENSER FAN CHR CRANKCASE HEATER RELAY THERMOSTAT PRESSURESTAT F KL1XON 6 3 L 3 CHR CH CHR Loc us cc ct T 0 1 L1 L2 L3 FIG 12 50K12 SINGLE COMPRESSOR 440 550 3 60 SCHEMATIC DIAGRAM CONDENSERLESS 12 INSTALLATION 50K INTERNAL WIRING FIELD WIRING 220V CONTROL CIRCUIT FOR CONDENSER FAN RESISTOR O CONTROL LIGHT IFAN MOTOR DUAL STARTER NI PRESSURESTAT CRANKCASE HEATER RELAY 170 THERMOSTAT NOT FURNISHED BY CARRIER NOTE FOR 440 VOLTS CONNECT TO TERMINALS Hi AND OF TRANSFORMER PRIMARY FOR 550 VOLTS CONNECT TO TERMINALS Hi AND H3 MOTOR COMPRESSOR GRANKOASE HEATER FIG 13 50K12 SINGLE COMPRESSOR 440 550 3 60 CONDENSERLESS 13 5 0 INSTALLATION INTERNAL WIRING 220V CONTROL CIRCUIT FOR CONDENSER FAN RELAY FIELD WIRING CRANKCASE HEATER OL OL RELAY COIL H S OLDING COIL mer HOLDING _ gt nl 7 7 2 2 DUAL KLIXON TO THERMOSTAT N
8. 0 3 60 CONDENSERLESS 50K INSTALLATION INTERNAL WIRING mms FIELD WIRING 220V CONTROL CIRCUIT SELECTOR SWITCH FOR CONDENSER ES SEN CONTROL FANS 1 LIGHT 65 CONTROL PANEL 3 an YELLOW 1 BLACK TO 1 lt RED THERMOSTAT 2 x BLUE panser _ _ ON TRANSFORMER USE CRANKCASE HEATER p I i I TERMINAL FOR 440 VOLT MAGNETIC STARTER 1 RELAY N C DO OO H I 8 FOR 550 VOLT RESET 17 1 1 2 L 2 5 6 1 HEATER C 3 E ELEMENT 0000 TRANSFORMER E pal 1 1 1 1 1 11 1 JI 1 7 1 FAN MOTOR RED RED 425 FAN RED No T 3 I BLACK YELLOW BLUE DUAL PRESSURESTAT MOTOR COMPRESSOR CRANKCASE HEATER FIG 16 50K16 SINGLE COMPRESSOR 440 550 3 60 CONDENSERLESS 16 50 INSTALLATION J N 8 1 35V XMV 7 7 SSA TUASNACNOD 09 077 807 5 OML 91 09 LT DIA M31V3H 5 7 4915330553584 Fana NE te Nene ss gt 522 2 2 21 522 SAVT3H 81103813
9. 10MLNOO Age ASVONNVYS so 191634166344 93184915 DLSNOVW t rd H3lV3H 5 17 13638 11 gg 4 HOLIMS 890123135 ONIHIM 01434 1711 3 14 SSYTYYSNHANOD 09 0 077 5 OML 91305 81 9 31V 3H IS VOXNNVHO Y3LV3H 3 VO 4055 3HdWOO 21 13538 2 lt 31 15 2IL3NOVIN 35V XMV 22232221 E 7 B Low ee F 18 2 28 2 5 435 OHAINOO HOLIMS 80193135 9 01313 50K 1VNHA3LNI 18 FILING INSTRUCTIONS MAJOR TAB MINOR TAB THIS ISSUE UED SUPERSEDES Packaged Packaged Units Commercial and 50 8 1415 50 8 1405 Equipment IndustrialUnits 1 20 1 18 Installation and 12 60 9 59 Service 50 8 1415 12 60
10. OT FURNISHED PRESSURESTAT STARTER I BY CARRIER EEE HOLDING COIL 2 2 44 I WINDING STARTER TERMINAL 5 BLOCK 7 2 WINDING CRANKCASE HEATER 2 5 CRANKCASE CONTACTS sa ae a 1 L FIG 14 50K16 SINGLE COMPRESSOR 208 220 3 60 SCHEMATIC DIAGRAM CONDENSERLESS 14 INSTALLATION 5 0 INTERNAL WIRING ee 2008 FIELD WIRING l III gt gt 220V CONTROL CIRCUIT FOR CONDENSER FANS SELECTOR SWITCH gp CONTROL LIGHT Se CONTROL PANEL 02 1 YELLOW LL RED TERMINAL du Q3 2 1 CRANKCASE HEATER BLOCK 2 RELAY N G TO THERMOSTAT 1 2 MOTOR 23 gt 0 s cee DUAL PRESSURESTAT BLAGK YELLOW BLUE atc 85 2 ISTARTER MOTOR COMPRESSOR C RANKCASE HEATER FIG 15 50K16 SINGLE COMPRESSOR 208 22
11. R DISCHARGE AND LIQUID CONNECTIONS 50K12 SIDE ELEVATION FRONT ELEVATION NOTE ALL DIMENSIONS ARE TO OUTSIDE OF CASING NOT TO OUTSIDE OF PANEL 265 COMPRESSOR DISCHARGE VALVE FIG 3 LOCATION OF COMPRESSOR DISCHARGE AND LIQUID CONNECTIONS 50 16 SINGLE COMPRESSOR MODEL 5 0 INSTALLATION SIDE ELEVATION FRONT ELEVATION ALL DIMENSIONS ARE TO OUTSIDE OF CASING NOT TO OUTSIDE OF PANEL EXPANSION VALVE SYSTEM NO 2 EXPANSION VALVE SYSTEM NO 1 FIG 4 LOCATION OF COMPRESSOR DISCHARGE AND LIQUID CONNECTIONS 50 16 2 COMPRESSOR MODEL 50K BASE UNIT 9AB CONDENSER BLEEDER PORT PORT FOR FUSIBLE UNION RECEIVER EXPANSION VALVE LIQUID LINE SIGHT GLASS LIQUID LEVEL FILTER DRI ER CHECK PORT HOT GAS LINE PROVIDE LOOP FOR HOT GAS LINE FIG 5 SCHEMATIC PIPING FOR 50K8 AND 50K12 WITH ONE 1 9AB CONDENSER Carrier INSTALLATION 5 0 50 16 50K12 SINGLE COMPRESSOR MODEL 2 9AB UNITS STACKED EXPANSION VALVE SIGHT GLASS FILTER DRI ER BLEEDER PORT PORT FOR FUSIBLE UNION RECEI VER PROVIDE LOOP FOR HOT GAS LINE LIQUID LEVEL CHECK PORT NOTE LINE SIZES SHOWN FOR 50 EQUIV LENGTH SEE TABLE 3 FIG 6 SCHEMATIC PIPING FOR 50K12 AND 50K 16 SINGLE COMPRESSOR MODELS WITH 2 9AB CONDENSERS DISCHARGE LINE LIQUID LINE FROM BASE UNIT TO BASE UNIT FIG 6B ALTERNATE ARRANGEMENT
12. iquid line enters the expansion valve moisture and liquid indicator goes between the filter drier and the expansion valve PRESSURE RELIEF PROTECTION Refrigerant pressure relief protection must be pro vided for each system at the time of installation of the unit suitable fusible union a liquid line soft solder joint within the base unit or a rupture disc Chicago Code may be used depending on local codes etc The 9AB6 receiver is provided with a 3 8 FPT fitting for the installation of a fusible union or rupture disc Cerro De Pasco Co fusible union No 5160 1 or No 5250 1 melting point 197 F or 203 F Carrier Part No EK41JN200 is suitable check local codes HEAD PRESSURE CONTROL condensing pressure head pressure control acces sory package is available for use with the 9AB conden sers Consult the 9AB Instruction Sheets for details 50 8 1415 50 INSTALLATION TABLE 1 e Evaporator Coil Liquid Line Connection Compressor Model Location R 22 Circuit No Pounds 1 Circuit 6D48 1 6048 Left Side Right End No 2 6D48 Right Side Left End TABLE 2 10 50K 12 Single Compressor 50K 16 Single Compressor 50K 16 2 Compressor 10 Recommended Line Sizes Linear Feet Piping 60 Discharge Line Liquid Line Liquid Hot Liquid Hot Liquid Hot Unit Connection Connection Line Ga Line Gas Line Gas 50 8 7 8
13. t to properly indicate the moisture content of the refrigerant Operate the system at least 30 minutes before attempting to determine the moisture reading CHARGING PROCEDURE The complete refrigerant system should be evacuated with a good vacuum pump before charging with refrig erant When charging connect a cylinder of refrig erant through a tee to a gauge and to the gauge port on the compressor service valve Have the cylinder in the upright position to admit vapor only Admit re refrigerant to break the vacuum in the system Start the compressor and modulate the valve on the cylinder to keep the suction pressure slightly under 50 psig Charge the system until liquid refrigerant will bleed from the liquid level check port on the receiver and also until the sight glass is clear SIDE ELEVATION 50K NOTE the liquid refrigerant bleeds from the liquid level check port on the receiver but there is still flashing at the sight glass there is an indication that there is a re striction in the liquid line or filter drier Let the system operate for 20 minutes to balance out and recheck the refrigerant and oil levels The receiver has a bleeder port at the top to bleed non condensables from the system There has to be sufficient refrigerant in the system to make a liquid seal at the outlet of the receiver to trap the non condensables in the top of the receiver before the bleeder port can be effective WIRING The
14. yout for the various units when connected with the 9AB Air Cooled Con denser Table 2 shows the connection sizes at the base unit and recommends line sizes for various refrigerant line lengths Consult the Installation Instructions of the condenser used and Part 3 of the System Design Manual for piping details and line sizes when greater lengths are used Carrier Corporation 1960 Litho in U S A 12 60 In order to prevent condensed liquid refrigerant or oil from causing damage to the compressor install a trap in the vertical discharge line near the com pressor The trap may be installed within or ad jacent to the base unit chassis The height of the trap or loop should be 6 inches for every 10 feet of vertical discharge line If the height of the ver tical discharge line is such as to make a single trap impractical the loop can be replaced by a check valve or several traps When installing refrigerant piping make certain it is well supported Install piping with sufficient flex ibility to make sure line vibrations are not trans mitted to the building The openings in the chassis normally used for the water cooled condenser water piping may be used to bring the lines into the unit Install the discharge line assembly filter drier and the moisture and liquid indicator in each circuit within the chassis of the base unit Locate the filter drier and the moisture and liquid indicator in the liquid line just before the l
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