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Operation and Installation Manual
SSC Series
Central Chilling Stations
Important! Read Carefully Before Attempting to Install or Operate Equipment
Part No. A0551797 Revision: NEW Bulletin No. SC3-630
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Write down your unit serial number(s) ________________ ________________ here for future reference ________________ ________________ ________________ ________________ ________________ ________________ Sterling is committed to a continuing program of product improvement. Specifications, appearance, and dimensions described in this manual are subject to change without notice. © Copyright Sterling 2006 All ri
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Safety Considerations Sterling central chilling stations are designed to provide safe and reliable operation when installed and operated within design specifications, following national and local safety codes. To avoid possible personnel injury or equipment damage when installing, operating, or maintaining this equipment, use good judgment and follow these safe practices: þ Only PROPERLY TRAINED personnel familiar with the information within this manual should work on this equipment.
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Table of Contents 1 General Information................................................. 7 1-1 Introduction......................................................................................7 1-2 Necessary Documents ....................................................................7 1-3 Models Covered ..............................................................................8 1-4 Standard Features...........................................................................8 1-5 Avai
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Table of Contents 5 Startup Checklists ................................................. 33 5-1 Introduction....................................................................................33 5-2 Water-Cooled SSC Series Startup Checklist.................................33 5-3 Water-Cooled SSC Series Startup ................................................35 5-4 Remote Air-Cooled SSC Series Startup Checklist ........................35 5-5 Remote Air-Cooled SSC Series Startup.............
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Charts and Figures 1 Typical Two-Circuit 60-100 Ton Water Cooled Chiller 11 2 Typical Two-Circuit 60-100 Ton Remote Air Cooled Chiller 13 3 Freezing Protection Curve 29 4 SSC Series Standard Control Panel 39 5 SSC Series Advanced Control Panel 39 6 SSC Series Standard Control Panel 44 7 SSC Series Advanced Control Panel 58 8 Main Menu Screen (Advanced Control Panel) 59 9 Chiller Status Screen (Advanced Control Panel) 61 10 Chiller Configuration Screen (Advanced Control Panel)
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1 General Information 1-1 Introduction Sterling SSC Series central water chilling stations are available in water-cooled and remote air-cooled designs. They differ only in the condensing media used. The SSC Series units are configured with two independent circuits using multiple compressors for each circuit. This manual lists information for these units. SSC Series chilling stations may be configured with stainless steel pump tanks for use as reservoirs for chilled water processes. The
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1-3 Models Covered This manual provides operation, installation, and maintenance instructions for the SSC Series central chilling stations. Model numbers are listed on the serial tag. A model number followed by Q indicates a specially constructed unit, and not all information in this manual may apply. Make sure that you know the model number, serial number, and operating voltage of your chiller if you contact Sterling. 1-4 Standard Features • Two independent refrigeration circuits
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1-5 Available Options SSC Series central chillers are available with options to tailor the unit to your requirements. Some are factory installed; some can be retro-fitted in the field. Consult Sterling sales for more information. Available SSC Series options include: • Advanced control package including: AB SLC 5/04 PLC with PanelView 1000 color touch screen, control of up to nine additional chillers, cooling tower system, water treatment system, and DH+ communication capabilities • G
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Model Number Nomeclature SSC W 060 SSC – Scroll Compressor Central Chiller Condenser Type R – Remote Air Cooled W – Water Cooled Nominal Unit Size – Tons (kW) 030 – 30 (105.4) 070 – 70 (246.0) 040 – 40 (140.6) 080 – 80 (281.2) 050 – 50 (175.7) 090 – 90 (316.3) 060 – 60 (210.9) 100 – 100 (351.5) Page 10 of 86 SSC Series Central Chilling Stations
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Figure 1 Typical Two-Circuit 60-100 Ton Water Cooled Chiller SSCW-xxx Model 30 40 50 60 Cooling Capacity (tons) @ 50°F (10°C) LWT 32.4 41.4 50.2 64.8 Capacity stages (qty.) 2 4 EER (BTUH/W) 15.65 14.91 15.35 15.66 Nominal water flow (gpm) Evaporator 78 [295.3] 99 [374.8] 120 [454.2] 156 [590.5] [lpm] Condensers 97 [367.2] 124 [469.4] 151 [571.6] 194 [734.4] Condenser connection (no manifold) Flange Conn. (in.) (2) 2 (2) 2 (2) 2 (2) 2 1/2 Evaporator manifold connect
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SSCW-xxx Model 70 80 90 100 Cooling Capacity (tons) @ 50°F (10 °C) LWT 73.1 81.4 90.3 99.2 Capacity stages (qty.) 4 EER (BTUH/W) 15.15 14.63 14.90 15.16 Evaporator 175 [662.4] 196 [741.9] 217 [821.4] 238 [900.9] Nominal water flow (gpm) Condensers 219 244 271 298 [lpm] [829.0] [923.6] [1025.8] [1128.1] Condenser connection (no manifold) Flange Conn. (in.) (2) 2 1/2 (2) 2 1/2 2 1/2 / 3 (2) 3 Evaporator manifold connection Victaulic 3 3 4 4 Amp draw, nameplate (460/3/6
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Figure 2 Typical Two-Circuit 60-100 Ton Remote Air Cooled Chiller SSCR-xxx Model 30 40 50 60 Cooling Capacity (tons) @ 50°F LWT 29.8 38.4 46.2 59.6 Capacity stages (qty.) 2 4 EER (BTUH/W) 11.36 10.84 11.29 11.11 Nominal water flow (gpm) 72 92 111 143 Evaporator [lpm] [272.5] [348.3] [420.2] [541.3] Evaporator manifold connection Victaulic 3 3 3 3 No. of condenser fans per condenser 3 2 2 3 Chiller 56 70 88 111 Amp draw, nameplate Condensers (per (460/3/60 V) 3.9 7 7 10.5
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SSCR Series Remote Condenser Models Fan(s) Refrigeration Each Connections Charge Model Dia. Motor Amps Air flow Discharge Liquid R-22 Number in. hp 460V Fans cfm ODS(in.) ODS(in.) lbs. 5 1 SSCR30 26 ¾ hp 3 ø 3.9 3 20,500 1 /8 1 /8 5 5 SSCR40 30 1 ½ hp 3 ø 7.0 2 23,200 1 /8 1 /8 12 5 5 SSCR50 30 1 ½ hp 3 ø 7.0 2 21,900 1 /8 1 /8 12 1 1 SSCR60 30 1 ½ hp 3 ø 10.5 3 34,800 2 /8 2 /8 19 1 1 SSCR70 a 30 1 ½ hp 3 ø 10.5 3 34,800 2 /8 2 /8 19 1 1 b 30 1 ½ hp 3 ø 14.0 4 46,400
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2 Shipping Information 2-1 Unpacking and Inspection You should inspect your central chilling station for possible shipping damage. If the container and packing materials are in re- usable condition, save them for reshipment if necessary. Thoroughly check the equipment for any damage that might have occurred in transit, such as broken or loose wiring and components, loose hardware and mounting screws, etc. In case of breakage, damage, shortage, or incorrect shipment, refer to the follow
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2-3 If the Shipment is Not Complete Check the packing list. The apparent shortage may be intentional. Back-ordered items are noted on the packing list. You should have: þ Sterling SSC Series central chilling station þ Bill of lading þ Packing list þ Operating and Installation packet þ Electrical schematic and panel layout drawings þ Component instruction manuals þ Parts list Re-inspect the container and packing material to see if you missed any smaller items during unpacking. Dete
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2-6 Uncrating Your New Chiller ! WARNING ! DUE TO THE SIZE AND WEIGHT OF SSC SERIES CHILLERS, STERLING RECOMMENDS USING BONDED PROFESSIONAL MILLWRIGHTS TO UNLOAD AND MOVE SSC SERIES CHILLERS. Rig the chiller from the frame only, using spreader bars to prevent load transfer to any chiller components. Rig the frame from at least four points and balance the load before lifting to clear the skid. Use a forklift of adequate size when lifting the chiller by the fork pockets. Insert the
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- Notes - Page 18 of 86 SSC Series Central Chilling Stations
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3 Installation 3-1 Installation Location Considerations As with all equipment installations, follow all applicable codes and regulations. þ Locate close to the process to reduce piping expense. þ Locate adjacent to drain and city water sources. þ Consult a structural engineer to assure that the floor, mounting pad or structural steel support is of adequate strength. þ Allow for required service clearances necessary for condenser maintenance and easy access to all components. 3-2 Maki
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! DANGER Improper electrical connections can damage the unit and cause serious operator injury or death! Bring properly sized power leads and ground from a fused disconnect (installed by your electrician) to the unit. Provide external overcurrent protection to the unit, using circuit breakers or fuses. If you use fuses, make sure that they are dual-element time- delay fuses, sized according to your electrical code. Make sure that all electrical connections are tight. Important!
