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Table of Contents
Summary of Contents for KRACK SLD Series
- Page 1 E207120 OPERATING INSTALLATION MANUAL INSTALLING INSTRUCTIONS SLD/DLD/PLD AIR COOLED CONDENSING UNITS SLD SERIES COND. UNITS R-22, R-404A/R-507 10-60 HP. DLD SERIES COND. UNITS R-22, R-404A/R-507 7-50 HP./CIRCUIT PLD SERIES COND. UNITS R-22, R-404A/R-507 14-100 HP.
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Page 2: Table Of Contents
TABLE OF CONTENTS I. Receipt of Equipment……………..3 II. Refrigeration Piping……………..3 III. System Evacuation………….…..5 IV. Electrical………………………...5 V. Charging the System..…………...5 VI. Operation Checkout…………..5 VII. Features and Controls………...6 VIII. Normal Maintenance…………7 TABLES: Table 1 : Recommended Line Sizes………………...8,9 Table 2 : Condensing Unit Refrigerant Charge..10,11,12 Table 3 : Low Pressure Control Settings………….13... -
Page 3: Receipt Of Equipment
Large Condensing Unit Model Key I - 0700 H Condensing Unit Family S - Single Compressor Voltage P - Parallel Compressors K - 208/230/3/60 D - Dual Compressors M - 460/3/60 P - 575/3/60 Levitor Condenser U - 380/3/50 Compressor Manufacture Refrigerant B - Bitzer Semi-Hermetic 2 - R22... -
Page 4: Refrigeration Piping
All equipment should be carefully checked for damage as soon as it is received. If any E) UNIT LOCATION damage is evident, a notation must be made Large air-cooled condensing units dissipate on the delivery receipt before it is signed a tremendous amount of heat and require and claim should then be filed against the large volumes of air. -
Page 5: System Evacuation
2) Practical pressure drop (usually solder flux consists of heavy wax type equivalent to 2 F maximum) materials which if allowed to enter the 3) For proper oil return, all horizontal lines system cause excessive service problems in should be sloped downwards toward the form of wax at expansion valves which compressor at 1 inch per 10 feet. -
Page 6: Electrical
A two-stage vacuum pump is recommended When initially charging a system that is in a if moisture is to be removed by evacuation. vacuum, liquid refrigerant can be directly A single-stage pump will not remove added into the receiver until the system moisture. -
Page 7: Features And Controls
cause liquid to return to the compressor. 2) HIGH AND LOW PRESSURE Too high suction superheat may cause CONTROLS excessive discharge temperatures. For maximum system capacity the minimum SLD/DLD/PLDs are furnished with superheat must be 20 F and the maximum individual manual reset high-pressure and superheat must be 30 F to 40 F at the low-pressure controls. -
Page 8: Normal Maintenance
NOTE: The use of a crankcase See Table 4 for suggested pressure settings heater installed on the compressor used on all multiple condenser fan systems. does not always assure that liquid refrigerant will not condense in the 7) LOW AMBIENT FLOODING oil under severe weather conditions. -
Page 9: Line Sizes
+20° F -20° F Liquid Line Equivalent Suction Line Length Equivalent Suction Line Length Receiver to Expansion Valve SYSTEM CAPACITY BTU/H 100' 100' 100' R-22 36,000 1 1/8 1 1/8 1 3/8 1 1/8 1 3/8 1 3/8 1 3/8 42,000 1 1/8 1 1/8... - Page 10 SUCTION TEMPERATURE +20° F -20° F Liquid Line Equivalent Suction Line Length Equivalent Suction Line Length Receiver to Expansion Valve SYSTEM 100' 100' 100' CAPACITY BTU/H R-404A and R-507 36,000 1 1/8 1 1/8 1 1/8 1 1/8 1 1/8 1 3/8 1 3/8 42,000...
- Page 11 TABLE 2A SLD CONDENSING UNIT REFRIGERANT CHARGE - POUNDS Above Below Model Refrigerant 70 F 50 F 30 F 10 F -20 F SLD 0100 H2 R-22 29.1 39.8 43.6 45.9 46.8 48.4 SLD 0150 H2 R-22 31.6 37.3 44.8 49.0 50.6 53.1...
- Page 12 TABLE 2B DLD CONDENSING UNIT REFRIGERANT CHARGE – POUNDS Above Below Model* Refrigerant 70 F 50 F 30 F 10 F -20 F DLD 0100 R-22 14.7 18.5 19.8 20.7 21.0 21.6 DLD 0150 R-22 17.4 24.5 27.0 28.5 29.0 30.0 DLD 0160 R-22...
- Page 13 TABLE 2C PLD CONDENSING UNIT REFRIGERANT CHARGE - POUNDS Above Below Model Refrigerant 70 F 50 F 30 F 10 F -20 F PLD 0500 H2 R-22 80.4 84.5 102.3 118.5 124.6 133.8 PLD 0600 H2 R-22 107.9 129.9 159.7 176.3 182.4 192.2...
- Page 14 TABLE 3A LOW PRESSURE CONTROL SETTINGS Minimum + R-22 R-404A Temperature Max Cut In Cut Out Max Cut In Cut Out 50 F 70 Psig 30 Psig 85 Psig 40 Psig 40 F 55 Psig 25 Psig 70 Psig 35 Psig 30 F 40 Psig 20 Psig...
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