IPCX Chillers - Dunham-Bush Americas

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DESIGN FEATURES: MICROCOMPUTER CONTROL (CONT.)○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○Terminal InterfacingUsing any one method shown below.4) CHLK - ChillerLINKhas always been a strong advocateof open systems communications. This has been evidentin the past with the publication of our network protocol,and now once again through our interoperability withBACnet. In addition to BACnet, the modular design ofour ChillerLINK also supports Modbus protocol. Consultwith Dunham-Bush to verify compatibility with otherprotocols.’s ChillerLINK is a microprocessorbasedcommunication device designed to provideseamless, two-way translation between a Dunham-Bushmicrocomputer and a BACnet or MODBUS compliantnetwork or work station. ChillerLINK devices can beset for two Data Link/Physical Layer configurations:1. PTP (point-to-point) via EIA-232 standard2. EIA-485 standard for 2-wire or 4-wire systemsIn addition to providing seamless interoperability withBACnet or MODBUS systems, ChillerLINK can be speciallydesigned for full custom programmability of the dataflowing between the Dunham-Bush/BACnet/MODBUSnetworks.16
DESIGN FEATURES: PART-LOAD PERFORMANCE○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○IPCX Rotary Screw Water Chillerspossess superior part-load performance characteristics.This is accomplished with the infinite capacity controlcapability of the slide valve equipped compressor.Actual process loads are significantly less than full loaddesign conditions, therefore chillers operate at full loadfor only a fraction of the operating time.IPCX Rotary Screw Water Chillerscombine the efficient operation of the rotary screwcompressor with finite refrigerant management andmicroprocessor control to yield the best total energyefficiency and significant operating savings under anyload.When specifying process cooling equipment it isimportant to consider the system load characteristicsof the process application. In a typical city, the airconditioning load will vary according to changes in theambient temperature. Weather data compiled overmany years will predict the number of hours thatequipment will operate at various load percentages.The Air Conditioning and Refrigeration Institute (ARI)has established a system, in ARI 550/590-98, formeasuring total chiller performance over full and partloadconditions. The Integrated Part-Load Value (IPLV)is an excellent method of comparing diverse types ofequipment on an equal basis. The IPLV is a singlenumber estimate of a chiller’s power use weighted forthe number of hours the unit might spend at eachpart-load point. IPLV’s are based on Standard ARI RatingConditions.For COP and EER:IPLVorNPLVFor kW/ton:= 0.01A+0.42B+0.45C+0.12D (1a)where: A = COP or EER at 100%B = COP or EER at 75%C = COP or EER at 50%D = COP or EER at 25%IPLVor =10.01 0.42 0.45 0.12+ + +A B C DNPLVwhere: A = kW/ton at 100%B = kW/ton at 75%C = kW/ton at 50%D = kW/ton at 25%(1b)Non-Standard Part-Load Values (NPLV) also give asingle number estimate for the part-load performanceof a chiller but at Selected Application RatingConditions.Integrated Part-Load Values and Application Part-LoadValues are available from your Dunham-BushRepresentative and will be calculated for your specificconditions. These points, as well as the full loadselection point, are all covered under the ARI LargeTonnage Certification Program for Centrifugal andRotary Screw Water-Chilling Packages.17
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Page 4: UNIT FEATURES AND OWNER BENEFITS○
Page 7: DESIGN FEATURES: DIRECT DRIVE TWIN-
Page 11: UNIT FEATURES: CONTROL & STARTER PA
Page 15: DESIGN FEATURES: MICROCOMPUTER CONT
Page 19 and 20: OPTIONS (CONT.)○ ○ ○ ○ ○
Page 21 and 22: INSTALLATION DATA (CONT.)○ ○
Page 23 and 24: APPLICATION DATA (CONT.)○ ○ ○
Page 25 and 26: QUICK SELECTIONS AT A GLANCE○ ○
Page 27 and 28: DIMENSIONAL DATA (CONT.)○ ○ ○
Page 29 and 30: DIMENSIONAL DATA (CONT.)○ ○ ○
Page 31 and 32: TYPICAL PIPING SCHEMATIC (CONT.)○
Page 33 and 34: TYPICAL CONTROL WIRING DIAGRAM (CON
Page 35 and 36: STARTER CONNECTION REQUIREMENTS○
Page 38 and 39: 1.08 WarrantyA. The equipment suppl
Page 40 and 41: B. A microcomputer-based controller
Page 43 and 44: Under voltage relayCurrent transfor

IPCX Chillers - Dunham-Bush Americas

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