Model YCUL Air-Cooled Scroll Compressor ... - Usair-eng.com

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Guide SpecificationsPART 1 – GENERAL1.01 SCOPEA. The requirements of the General Conditions, SupplementaryConditions, Division 1, and Drawings applyto all Work herein.B. Provide Microprocessor controlled, multiple-scrollcompressor, air-cooled, condensing units of thescheduled capacities as shown and indicated on theDrawings, including but not limited to:1. Condensing Unit package2. Electrical power and control connections3. DX Central Station Air Handling connections1.02 QUALITY ASSURANCEA. Products shall be Designed, Tested, and installed incompliance with applicable sections of the followingStandards and Codes:1. ANSI/ASHRAE Standard 15 – Safety Code forMechanical Refrigeration2. ASHRAE 90.1 - Energy efficiency compliance.3. ANSI/NFPA Standard 70 – National ElectricalCode (N.E.C.).4. Conform to Intertek Testing Services, formerlyETL, for construction of condensing units andprovide E.T.L./c E.T.L. Listing label.5. Manufactured in facility registered to ISO 9002.B. Factory Test: Condensing Unit shall be pressuretested, evacuated and given a nitrogen holdingcharge and an initial oil charge, and shall be factoryoperational run tested to assure each control deviceoperates properly.C. Warranty: Manufacturer shall Warrant all equipmentand material of its manufacture against defects inworkmanship and material for a period of one yearfrom date of initial start-up or eighteen (18) monthsfrom date of shipment, whichever occurs first.1.03 DELIVERY AND HANDLINGA. Unit shall be delivered to job site fully assembled, andgiven nitrogen holding charge and a full oil charge bythe Manufacturer. (R-410A refrigerant supplied byothers).B. Unit shall be stored and handled per Manufacturer’sinstructions.PART 2 - PRODUCTS2.01 CONDENSING UNITS MATERIALS AND COMO-NENTSA. General: Install and commission, as shown on theschedules and plans, factory assembled, charged,and tested air cooled scroll compressor condensingunit as specified herein. Condensing Unit shall bedesigned, selected, and constructed using a refrigerantwith Flammability rating of “1”, as defined byANSI/ASHRAE STANDARD - 34 Number Designationand Safety Classification of Refrigerants. CondensingUnit shall include, but is not limited to: not less thantwo refrigerant circuits, scroll compressors, air-cooledcondenser, refrigerant, lubrication system, interconnectingwiring, safety and operating controls includingcapacity controller, control center, motor startingcomponents, and special features as specified hereinor required for safe, automatic operation.B. Cabinet: External structural members shall be constructedof heavy gauge, galvanized steel coated withbaked on powder paint which, when subject to ASTMB117, 1000 hour, 5% salt spray test, yields minimumASTM 1654 rating of “6”.2.02 COMPRESSORSA. Compressors: Shall be hermetic, scroll-type, including:1. Compliant design for axial and radial sealing.2. Refrigerant flow through the compressor with100% suction cooled motor.3. Large suction side free volume and oil sump toprovide liquid handling capability.4. Compressor crankcase heaters to provide extraliquid migration protection.5. Annular discharge check valve and reverse ventassembly to provide low pressure drop, silentshutdown and reverse rotation protection.6. Initial Oil charge.7. Oil Level sightglass.8. Vibration isolator mounts for compressors.9. Brazed-type connections for fully hermetic refrigerantcircuits.2.03 REFRIGERANT CIRCUITTwo independent refrigerant circuits will be furnished oneach unit. All unit piping will be copper, with brazed joints.The liquid line will include a field connection shutoff valvewith charging port located on each condenser circuit. Suctionline connections are provided on each refrigerationcircuit. Filter drier and sight glass are shipped loose forfield installation on each refrigerant circuit. All expansionvalves and liquid line solenoid valves and refrigerant fieldpiping are supplied by others.2.04 HEAT EXCHANGERSA. Air Cooled Condenser:44JOHNSON CONTROLS
FORM 150.68-EG1 (1109)1. Coils: Internally enhanced, seamless coppertubes, mechanically expanded into aluminumalloy fins with full height collars. Subcooling coilan integral part of condenser. Design workingpressure shall be 650 psig (45 barg).2. Fans: Shall be dynamically and statically balanced,direct drive, corrosion resistant glass fiberreinforced composite blades molded into lownoise, full airfoil cross section, providing verticalair discharge from extended orifices for efficiencyand low sound. Each fan in its own compartmentto prevent cross flow during fan cycling. Guardsof heavy gauge PVC (polyvinyl chloride) coatedsteel.3. Fan Motors: High efficiency, direct drive, 6 pole,3 phase, insulation class “F”, current-protected,Totally Enclosed Air-Over (TEAO), rigid mounted,with double sealed, permanently lubricated, ballbearings.2.05 CONTROLSA. General: Automatic start, stop, operating, and protectionsequences across the range of scheduledconditions and transients.B. Microprocessor Enclosure: Rain and dust tight NEMA3R/12 (IP55) powder painted steel cabinet withhinged, latched, and gasket sealed door.C. Microprocessor Control Center:1. Condensing Unit control is set for Discharge AirTemperature Control2. Automatic control of compressor start/stop, anticoincidenceand anti-recycle timers, automaticpump-down shut-down, condenser fans, unitalarm contacts, and condensing unit operationfrom 0°F to 125°F (-18°C to 52°C) ambient. Automaticreset to normal chiller operation after powerfailure.3. Software stored in non-volatile memory, withprogrammed set-points retained in lithium battery-backedreal time clock (RTC) memory forminimum 5 years.4. Forty character liquid crystal display, descriptionsin English (or Spanish, French, Italian, orGerman), numeric data in English (or Metric)units. Sealed keypad with sections for Setpoints,Display/Print, Entry, Unit Options & clock, andOn/Off Switch.5. Programmable Set-points (within Manufacturerlimits): display language; suction pressure settingand control range, remote reset temperaturerange, set daily schedule/holiday for start/stop,manual override for servicing, low and highambient cutouts, number of compressors, lowsuction pressure cutout, high discharge pressurecutout, anti-recycle timer (compressor start cycletime), and anticoincident timer (delay compressorstarts).6. Display Data: Suction temperatures (optional),low ambient temperature cutout setting, outdoorair temperature, English or metric data, suctionpressure cutout setting, each system suction pressure,discharge pressure (optional), discharge airreset via Building Automation System (by others)via a 4-20milliamp or 0-10 VDC input with optionalBAS interface, anti-recycle timer status for eachsystem, anti-coincident system start timer condition,compressor run status, no cooling loadcondition, day, date and time, daily start/stoptimes, holiday status, automatic or manual systemlead/lag control (when controlling based onDischarge Air Temperature only), automatic lead/lag of compressors within a system, compressorstarts/operating hours (each), status of hot gasvalves, and fan operation, run permissive status,number of compressors running, liquid solenoidvalve status, load & unload timer status.7. System Safeties: Shall cause individual compressorsystems to perform auto shut down; manualreset required after the third trip in 90 minutes.Includes: high discharge pressure, low suctionpressure, high pressure switch, and motor protector.Compressor motor protector shall protectagainst damage due to high input current orthermal overload of windings.8. Unit Safeties: Shall be automatic reset and causecompressors to shut down if low ambient, or undervoltage.9. Alarm Contacts: Low ambient, low voltage, lowbattery, and (per compressor circuit): high dischargepressure, and low suction pressure.10. High Ambient Control: Permits unit operationabove 115°F (46°C) ambient.D. Manufacturer shall provide any controls not listedabove, necessary for automatic condensing unitoperation. Mechanical Contractor shall provide fieldcontrol wiring necessary to interface sensors to thecondensing unit control system.2.06 POWER CONNECTION AND DISTRIBUTIONA. Power Panels:1. NEMA 3R/12 (IP55) rain/dust tight, powderpainted steel cabinets with hinged, latched, andJOHNSON CONTROLS 45
Page 1 and 2: FORM 150.68-EG1 (1109)Model YCUL Ai
Page 3 and 4: IntroductionFORM 150.68-EG1 (1109)M
Page 5 and 6: MicroComputer Control CenterFORM 15
Page 7 and 8: Options and AccessoriesFORM 150.68-
Page 9 and 10: Unit NomenclatureFORM 150.68-EG1 (1
Page 11 and 12: Selection Data - continuedFORM 150.
Page 13 and 14: FORM 150.68-EG1 (1109)TABLE 4 - REF
Page 15 and 16: FORM 150.68-EG1 (1109)MODEL: YCUL00
Page 31 and 32: FORM 150.68-EG1 (1109)50HzModel No.
Page 33 and 34: FORM 150.68-EG1 (1109)All dimension
Page 35 and 36: FORM 150.68-EG1 (1109)All dimension
Page 37 and 38: FORM 150.68-EG1 (1109)NEOPRENE ISOL
Page 39 and 40: Electrical Data - 50 & 60HzFORM 150
Page 41 and 42: Electrical NotesFORM 150.68-EG1 (11
Page 43: Application DataFORM 150.68-EG1 (11
Page 47 and 48: FORM 150.68-EG1 (1109)per system. T

Model YCUL Air-Cooled Scroll Compressor ... - Usair-eng.com

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