Model YCAV Air-Cooled Screw Compressor Liquid Chillers Style A

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Accessories and Options - continuedFORM 201.21-EG1 (711)on the sides of the unit to visually screen and protectcoils. (Factory mounted)• LOUVERED PANELS (FULL UNIT) - Painted steelto match unit panels, to protect condenser coils fromincidental damage, visually screen internal components,and prevent unauthorized access to internalcomponents. (Factory mounted)• LOUVERED (CONDENSERS)/WIRE PANELS (ME-CHANICAL) - Louvered steel panels on external condensercoil faces, painted to match unit panels. Heavygauge, welded wire-mesh, coated to resist corrosion,around base of machine to restrict unauthorized access.(Factory mounted)EVAPORATOR OPTIONS• 1-1/2” Insulation - Double thickness insulation provided.(Factory mounted)• Raised Face Flange Accessory for cooler nozzles:♦ 150 psig (10.3 barg), welded flanges (field kit,matching pipe flange by contractor).♦ 300 psig (20.7 barg), welded flanges (factoryinstalled, matching pipe flange by contractor).♦ 150 psig (10.3 barg), ANSI/AWWA C-606 Flanges(field kit, matching pipe flange by contractor).FLOW SWITCH ACCESSORY - Vapor proof SPDT, NEMA3R switch, 150 psig (10.3 barg) DWP, 20°F to 250°F (-7°Cto 121°C) with 1” NPT (IPS) connection for upright mountingin horizontal pipe (This flow switch or equivalent mustbe furnished with each unit). (Field mounted)DIFFERENTIAL PRESSURE SWITCH - Alternative tothe paddle-type flow switch. The switch is rated at 3-45psig (0.2-3 barg) range and is equipped with 1/4" NPTEpressure connections. (Field mounted)BUILDING AUTOMATION SYSTEM INTERFACE - Thechiller is designed to accept 4 to 20mA or 0 to 10 VDCinput to reset the leaving chilled liquid temperature. (Factorymounted)MULTI-UNIT SEQUENCE CONTROL - Separate sequencingcontrol center provided to permit control of up toeight chillers in parallel based of mixed liquid temperature(interconnecting wiring by others). (Field mounted)VIBRATION ISOLATION OPTIONS• Elastomeric Isolation - Recommended for normalinstallations. It provides very good performance inmost applications for the least cost. (Field mounted)• 1” Spring Isolators - Level adjustable, spring andcage type isolators for mounting under the unit baserails. 1” nominal deflection may vary slightly by application.(Field mounted)• 2” Seismic Spring Isolators - Restrained Spring-FlexMountings incorporate rugged welded steel housingwith vertical and horizontal limit stops. Housings designedto withstand a minimum 1.0g accelerated forcein all directions to 2”. Level adjustable, deflection mayvary slightly by application. (Field mounted)BUY AMERICAN ACT COMPLIANCE - In keeping withthe “Buy America Act”, products will be comprised of 50%or more U.S. content and manufactured (final assembly)in the U.S.A.SERVICE ISOLATION VALVE - Service suction isolationadded to unit for each refrigerant circuit. (Factorymounted)CHICAGO CODE RELIEF VALVE - Special relief valvesper the Chicago code. (Factory mounted)SEQUENCE CONTROL AUTOMATIC LEAD TRANS-FER - Provided to permit control of up to eight chillersin parallel based on mixed liquid temperature (Fieldmounted)8JOHNSON CONTROLS
NomenclatureFORM 201.21-EG1 (711)NOMENCLATUREThe <strong>Model</strong> Number denotes the following characteristics of the unit:JOHNSON CONTROLS9
Page 1 and 2: FORM 201.21-EG1 (711)Model YCAV Air
Page 3: IntroductionFORM 201.21-EG1 (711)YO
Page 6 and 7: Specifications - continuedFORM 201.
Page 10 and 11: Temperatures and FlowsFORM 201.21-E
Page 12 and 13: Water Pressure DropFORM 201.21-EG1
Page 14 and 15: Water Pressure Drop - continuedFORM
Page 16 and 17: EfficiencyFORM 201.21-EG1 (711)Mode
Page 18 and 19: FORM 201.21-EG1 (711)Standard Effic
Page 30 and 31: High Efficiency Ratings - English -
Page 40 and 41: Standard Efficiency Ratings - SI -
Page 46 and 47: High Efficiency Ratings - SI - 60Hz
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High Efficiency Ratings - SI - 50Hz
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FORM 201.21-EG1 (711)High Efficienc
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High Efficiency Ratings - SI - 50Hz
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Physical Data (English - Standard E
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Physical Data (English - Standard E
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Physical Data (SI - Standard Effici
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Physical Data (SI - Standard Effici
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Dimensions - EnglishFORM 201.21-EG1
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Dimensions - English - continuedFOR
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Dimensions - SIFORM 201.21-EG1 (711
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Dimensions - SI - continuedFORM 201
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Isolator DetailsFORM 201.21-EG1 (71
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Isolator Details - continuedFORM 20
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Electrical Data - 2 Comp - 60HzFORM
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Electrical NotesFORM 201.21-EG1 (71
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Power Wiring - continuedFORM 201.21
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Power Wiring - continuedFORM 201.21
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Typical Control Wiring - Two Compre
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FORM 201.21-EG1 (711)Typical Contro
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Typical Control Wiring - Four Compr
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Application DataFORM 201.21-EG1 (71
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Guide Specifications - continuedFOR
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Guide Specifications - continuedFOR
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C. Components: Installing Contracto
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Model YCAV Air-Cooled Screw Compressor Liquid Chillers Style A

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