York 28971AR manual Application Data, Unit Location, Foundation, Chilled Liquid Piping

Page 96

Application Data

UNIT LOCATION

The YCAS chillers are designed for outdoor installation. When selecting a site for installation, be guided by the following requirements:

1.Installation sites may be either on a roof or on ground level. (See FOUNDATION)

2.Select a place having an adequate supply of fresh air for the condensers. Recommended clearances for all units are shown on the DIMENSIONS pages.

3.Avoid locations near windows or structures where normal operating sounds may be objectionable.

4.The standard condenser fans are propeller-type and are not recommended for use with ductwork, filters or other nuisance in the condenser air stream.

5.When it is desirable to surround the unit(s), it is recommended that the screening be able to pass the required chiller CFM without exceeding 0.1" external static pressure.

6.Protection against corrosive environments is available by supplying the units with either copper fins, or cured phenolic or epoxy-coating on the condenser coils. Either the cured phenolic or epoxy-coated coils should be utilized with any units being installed at the seashore, or where salt spray may hit the units, or where acid rain is prevalent (copper condenser coils are not recommended where they may be exposed to acid rain).

7.On installations where winter operation is intended and snow accumulations are expected, additional elevation must be provided to insure normal condenser air flow.

FOUNDATION

The unit should be mounted on a flat and level foundation, ground or roof, capable of supporting the entire operating weight of the equipment. Operating weights are given in the PHYSICAL DATA tables.

Roof Locations – Adequate structural strength to safely support the entire weight of the unit and service personnel must be provided. Care must be taken not to damage the roof during installation. If the roof is “bonded”, consult building contractor or architect for special installation requirements. Roof installations should incorporate the use of spring-type isolators to

minimize the transmission of vibration into building structure. Additional support should be provided to the roof at the spring-isolator locations.

Ground Locations – Units must be installed on a substantial base that will not settle and cause strain on the refrigerant lines, resulting in possible leaks. A one- piece concrete slab, with footers extending below the frost line, is recommended. The slab should not be tied to the main building foundation as noises will telegraph.

Mounting holes (5/8") are provided in the base rails for bolting the unit to its foundation. See DIMENSIONS for location of the mounting holes.

For ground installations, precautions should be taken to protect the unit from tampering by, or injury to, unauthorized persons. Fasteners on access panels will prevent casual tampering; however, further safety precautions, such as unit enclosure options, a fenced- in enclosure, or locking devices on the panels may be advisable. Check local authorities for safety regula- tions.

CHILLED LIQUID PIPING

The chilled liquid piping system should be laid out so that the circulating pump discharges into the cooler. The inlet and outlet cooler-liquid connections are given in DIMENSIONS. Hand stop valves are recommended for use in all lines to facilitate servicing. Drain connections should be provided at all low points to permit complete drainage of the cooler and system piping.

A strainer (40 mesh) is recommended for use on the INLET line to the cooler, and must be in place at initial operation of the water pumps.

Pressure-gauge connections are recommended for installation in the inlet and outlet water lines. Gauges are not provided with the unit and are to be furnished by others.

Chilled liquid lines exposed to the weather should be wrapped with a supplemental heater cable and insulated, or glycol should be added to the chilled liquid to protect against freezing if low-ambient periods are expected.

A flow switch is available as an accessory on all units. A flow switch must be installed in the leaving water piping of the cooler and must not be used to start and stop the unit.

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YORK INTERNATIONAL

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Contents Millennium Table of Contents Introduction York Millennium Air Cooled Screw Liquid ChillersSpecifications Complete Factory PackageSEMI-HERMETIC York Screw Compressors 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 YCAS0090EC Model YCAS0100ECModel YCAS0110EC 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 1500130 01400150 0160Dimensions YCAS0130 0180 SI 130 150 438 4572573.0 1127.8 960.1 Dimensions YCAS0200 0230 English 0200 02100230 Dimensions YCAS0200 0230 SI 0200 3032.8 965.20210 3032.8 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 Application Data Unit LocationFoundation Chilled Liquid PipingGuide Specifications Refrigerant Circuit Components Heat ExchangersControls Power Connection and Distribution 100 Part 3 Execution Installation 102 103 Proud Sponsor
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