Model YCAV Air-Cooled Screw Compressor Liquid Chillers Style A

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Electrical NotesFORM 201.21-EG1 (711)1. As standard, all units have single point power connection for two and three compressor systems and dual point for four compressor systems (withsingle point as an option). Contact factory for information regarding dual point power units.2. Maximum Inverse Time Ciruit Breaker - 250% of the rated input current of the drive per NEC 430.52 (C1).3. Maximum Dual Element (Time Delay) Fuse - 225% of the rated input current of the drive per NEC 430.52 (C1).4. MCA - Minimum Circuit Ampacity - 125% of the largest compressor RLA plus 100% of the remaining compressor RLA’s plus the sum of all condenserfan FLA’s per NEC 440.335. Recommended time delay or dual element fuse size - 150%of the largest compressor RLA plus 100% of the remaining compressor RLA’s plusthe sum of all condenser fan FLA’s.6. RLA - Rated Load Amps - rated in accordance with UL standard 1995.7. Local codes may take precedence.8. Control KVA includes operational controls and evaporator heaters.9. System inrush current is less than RLA due to the use of Johnson Controls Variable-speed drive technology. Typical compressor starting current(in the first four seconds of startup):Rated VoltageTypical Starting Current per <strong>Compressor</strong>200/60/3 53A230/60/3 46A380/60/3 29A460/60/3 23A575/60/3 18A400/50/3 28A10. Optional <strong>Compressor</strong> Service Disconnect switch is available on all units.11. Voltage Utilization Range:Rated VoltageUtilization Range200/60/3 180-220230/60/3 208-254380/60/3 342-402460/60/3 414-508575/60/3 520-635400/50/3 360-44012. Condenser fan FLA applies to both low sound and ultra quiet fans.LEGENDCBDEDISC SWFACT CBFLAHZMAXMCAMINMIN NFRLASP WIRECIRCUIT BREAKERDUAL ELEMENT FUSEDISCONNECT SWITCHFACTORY-MOUNTED CIRCUIT BREAKERFULL LOAD AMPSHERTZMAXIMUMMINIMUM CIRCUIT AMPACITYMINIMUMMINIMUM NON-FUSEDRATED LOAD AMPSSINGLE-POINT WIRINGNOTES:1. U.L. Label is provided on 60 Hz units for these electrical wiring configurations.2. –– –– –– –– –– –– Dashed Line = Field Provided Wiring.3. The above recommendations are based on the National Electric Code and using copper conductors only. Field wiring must also complywith local codes. Group Rated breaker must be HACR type for cUL machines.152JOHNSON CONTROLS
Power WiringFORM 201.21-EG1 (711)2 COMPRESSOR POWER WIRING CONNECTIONSVSD CONTROL PANELVSD1VSD2STANDARDCONTROLTRANSFORMERUNIT CONTROLSEVAPORATOR HEATERLINEREACTORFANCONTACTORSCIRCUITBREAKERGRDSee Note 3INDIVIDUAL SYSTEMCOMPESSOR SWITCHES(OPTION)FIELD PROVIDEDUNIT POWERSUPPLYFIG. 1 – TWO COMPRESSOR WIRING DIAGRAM WITH CIRCUIT BREAKER2 COMPRESSOR POWER WIRING CONNECTIONSVSD CONTROL PANELVSD1VSD2STANDARDCONTROLTRANSFORMERUNIT CONTROLSEVAPORATOR HEATERLINEREACTORFANCONTACTORSTERMINALBLOCKGRDSee Note 3INDIVIDUAL SYSTEMCOMPESSOR SWITCHES(OPTION)FIELD PROVIDEDUNIT POWERSUPPLYFIG. 2 – TWO COMPRESSOR WIRING DIAGRAM WITH TERMINAL BLOCKJOHNSON CONTROLS153
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FORM 201.21-EG1 (711)Model YCAV Air
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IntroductionFORM 201.21-EG1 (711)YO
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Specifications - continuedFORM 201.
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Accessories and Options - continued
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Temperatures and FlowsFORM 201.21-E
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Water Pressure DropFORM 201.21-EG1
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EfficiencyFORM 201.21-EG1 (711)Mode
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FORM 201.21-EG1 (711)Standard Effic
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High Efficiency Ratings - SI - 60Hz
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FORM 201.21-EG1 (711)High Efficienc
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Dimensions - EnglishFORM 201.21-EG1
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Model YCAV Air-Cooled Screw Compressor Liquid Chillers Style A

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