York 28971AR manual Power Panel

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Specifications (Continued)

˜Pulse width modulated (PWM) input for up to 40°F (22°C) total reset as standard.

˜Optional Building Automation System interface input card for up to 40°F (22°C) reset using a: 4 to 20 milliamp, 0 to 10 VDC input, or discrete reset input. [NOTE: The Standard MicroPanel can be directly connected to a YORK ISN Build- ing Automation System via the standard on- board RS485 communication port. This Option also provides open system compatibility with other communications networks (BACNET™ & LONMARK™ ) via interface through standard onboard 485 or 232 port and an external YorkTalk Translator.]

♦Additional functions (password protected) for pro- gramming by a qualified service technician:

˜Cut-outs for low and high ambient, low suction pressure, high discharge pressure, high oil tem- perature.

˜Refrigerant type.

˜High discharge pressure unload setpoint.

˜Fan control discharge pressure set point.

˜Fan ON/OFF pressure differential.

˜Compressor motor current percent limit.

♦The Standard unit controls permit operation down to 0°F (-18°C) outdoor ambient temperature.

POWER PANEL

•Power panel housed in NEMA 3R/12 (IP55) rain/ dust tight, powder painted steel cabinets with hinged, latched, and gasket sealed outer doors equipped with wind struts for safer servicing. Two motor con- trol center cabinets are provided, with independent doors and separated by a steel barrier panel.

•Current transformers sense each phase, as an in- put to the microprocessor, to protect compressor mo- tors from damage due to: low input current, high in- put current, unbalanced current, single phasing, phase reversal, and compressor locked rotor.

•Control circuit transformer provides 115V / 1Ø power to the unit control system. Includes factory primary wiring from lockable disconnect on panel door sepa- rate from the motor control centers, and secondary wiring supply to the 24V, fused Microprocessor panel transformer.

•Individual fan motor contactors & external overloads per condenser fan motor.

•Exposed compressor and fan motor power wiring routed through liquid tight conduit.

6	YORK INTERNATIONAL

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Contents Millennium Table of Contents Introduction York Millennium Air Cooled Screw Liquid ChillersSEMI-HERMETIC York Screw Compressors SpecificationsComplete Factory Package Condenser SectionRefrigerant Circuit Microprocessor ControlsPower Panel Accessories and Options DX Cooler Options Vibration IsolationHigh Static Fans Sound Reduction OptionsTemperatures and Flows Temperature and FlowsSI Units Water Pressure Drop English UnitsSI Units Pressure Drop kPaRatings English Units Model YCAS0110EC Iplv =Model YCAS0110EC Model YCAS0090ECModel YCAS0100EC 100 105 110 115 120 125Model YCAS0120EC Iplv = Model YCAS0120EC Model YCAS0130ECModel YCAS0140EC Model YCAS0150EC Iplv = Model YCAS0150EC Model YCAS0160ECModel YCAS0170EC Model YCAS0180EC Iplv = Model YCAS0180EC Model YCAS0200ECModel YCAS0210EC Model YCAS0230EC Iplv = Model YCAS0230EC Model YCAS0250ECModel YCAS0270EC Model YCAS0300EC Iplv = Model YCAS0300EC Model YCAS0330ECModel YCAS0360EC Model YCAS0400EC Iplv = Model YCAS0400EC Model YCAS0440ECRatings SI Units Model YCAS0120EC YCAS0160EC YCAS0170ECYCAS0180EC Model YCAS0200ECModel YCAS0230EC Model YCAS0300EC Model YCAS0400EC Model YCAS0440EC Physical Data English UnitsCondenser Fans SI Units Refrig. Charge, R-22,Ckt.-1 / Ckt.-2, kg Dimensions YCAS0090 0100EC English View A-ACenter of Gravity Alum 0090 73.7 41.9 38.4 0100 73.8 41.7 30.01Dimensions YCAS0090 0100EC SI 0090 1872.9 1063.3 0100 1875.4 1059.8Dimensions YCAS0110 0120EC English 0120 82.8 43.2 38.9Dimensions YCAS0110 0120EC SI 1834.7 1095.7 0120 1837.0 1093.8Dimensions YCAS0130 0180 English 130 1500150 01300140 0160Dimensions YCAS0130 0180 SI 130 150 438 4572573.0 1127.8 960.1 Dimensions YCAS0200 0230 English 0200 02100230 Dimensions YCAS0200 0230 SI 0210 3032.8 0200 3032.8965.2 0230 3032.8Dimensions YCAS0250 0270 English 16 Egde of Unit to Cooler Connection0250 141.6 33.8 0270 140.6 41.7 33.7 144.5 42.0 40.3Dimensions YCAS0250 0270 SI All dimensions are Mm unless otherwise noted0250 1063 1030 02701066 1023 Dimensions YCAS0300 0330 English 16 Edge of Unit to Cooler Connection0300 0330Dimensions YCAS0300 0330 SI 3911 1057 883 0300 3842 1058 876 0330Dimensions YCAS0360 English View A-A View C-C0360 197.3 44.0 33.2 0360 200.7 44.0 39.6Dimensions YCAS0360 SI 0360 5011 1117 844 5097 1005 Dimensions YCAS0400 0440 English 218.7 44.0 34.1 Dimensions YCAS0400 0440 SI 0400 0440Operating Weights Aluminum Fin Coils LbsIsolator Selection Aluminum Fin Coils Operating Weights Copper Fin Coils Copper FIN Coil Weight Distribution by Model LBS Ycas TotalIsolator Selection Copper Fin Coils Isolator Details Or RD-3Or RD-4 CP-2-XX AWMR-1-XXXAWMR-2-XXX System #1 FIELD-SUPPLIED Wiring Electrical DataOPT. NF FLA See page 89 for Electrical Data footnotes MIN NF OVER-CURRENT Wire Range Data Ycas Chiller FIELD-SUPPLIED Wiring System #1 System #2 Model Volts Compressor Data Field Supplied Wiring LRA RLA Standard Optional NF FLA LRA RLA Electrical Notes RLA LRA QTY20A 30A Power Connection Options Style F 2 Compressor Power Wiring ConnectionsLD05550 Control Power Wiring As Shown On Two Compressor DiagramsSee Note CB1 CB3 CB2 CB4 Typical Control Wiring 2-Compressor Units For Legend Refer to Bottom Foundation Application DataUnit Location Chilled Liquid PipingGuide Specifications Refrigerant Circuit Components Heat ExchangersControls Power Connection and Distribution 100 Part 3 Execution Installation 102 103 Proud Sponsor