York YCAL0065, YCAL0041 manual Refrigerant Circuit Components, Heat Exchangers, Controls

Page 75

FORM 150.64-EG1

2.Refrigerant flow through the compressor with 100% suction cooled motor.

3.Large suction side free volume and oil sump to provide liquid handling capability.

4.Compressor crankcase heaters to provide extra liquid migration protection.

5.Annular discharge check valve and reverse vent assembly to provide low pressure drop, silent shut- down 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 refrig-

erant circuits.

2.03REFRIGERANT CIRCUIT COMPONENTS

Each refrigerant circuit shall include: liquid line shutoff valve with charging port, low side pressure relief device, filter-drier, solenoid valve, sight glass with moisture indi- cator, expansion valves, and flexible, closed-cell foam insulated suction line.

2.04HEAT EXCHANGERS

A.Evaporator:

1.Evaporator shall be brazed-plate stainless steel construction, single or dual circuit heat exchangers capable of refrigerant working pressure of 450 psig (3103 kPa) and liquid side pressure of 150 psig (1034 kPa) (Option for 300 psig [2068 kPa] available.)

2.Evaporator shall be covered in 3/4" (19mm) flexible, closed cell insulation, thermal conduc tivity of 0.26k (BTU/HR-FT2-°F]/in.) maximum.

3. C o o l e r s h a l l h a v e t h e r m o s t a t i cally controlled heaters to protect to -20°F (29°C) ambient in off-cycle.

4.Brazed plate heat exchangers shall be UL listed.

5.Installing contractor must include accomoda tions in the chilled water piping to allow prop er drainage and venting of the heat exchang er. A strainer with a mesh size between 0.5 and 1.5mm (40 mesh) is recommended up stream of the heat exchanger to prevent clog ging.

B.Air Cooled Condenser:

1.Coils: Internally enhanced, seamless copper tubes, mechanically expanded into aluminum alloy fins with full height collars. Subcooling coil an integral part of condenser. Design working pressure shall be 450 PSIG (31 bar).

2.Low Noise Fans: Shall be dynamically and statically bal anced, direct drive, corrosion re sistant glass fiber reinforced composite blades

molded into a low noise, full-airfoil cross section,

providing

vertical air discharge and low

sound. Each fan

in its own compartment

to prevent crossflow

d u r i n g

f a n

cycling. Guards of heavy gauge,

P V C

(polyvinylchloride) coated or galvanized

 

steel.

 

 

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 lu- bricated, ball bearings.

2.05CONTROLS

A.General: Automatic start, stop, operating, and pro- tection sequences across the range of scheduled conditions and transients.

B.Microprocessor Enclosure: Rain and dust tight NEMA 3R/12 (IP55) powder painted steel cabinet with hinged, latched, and gasket sealed door.

C.Microprocessor Control Center:

1.Automatic control of compressor start/stop, anti-coincidence and anti-recycle timers, au- tomatic pumpdown on shutdown, condenser fans, evaporator pump, evaporator heater, unit alarm contacts, and chiller operation from 0°F to 125°F (-18°C to 52°C) ambient. Automatic reset to normal chiller operation after power failure.

2.Remote water temperature reset via a Pulse Width Modulated (PWM) input signal or up to two steps of demand (load) limiting.

3.Software stored in non-volatile memory, with programmed setpoints retained in lithium bat- tery backed real time clock (RTC) memory for minimum 5 years.

4.Forty character liquid crystal display, descrip- tions in English (or Spanish, French, Italian, or German), numeric data in English (or Metric) units. Sealed keypad with sections for Setpoints, Display/Print, Entry, Unit Options & clock, and On/Off Switch.

5.Programmable Setpoints (within Manufacturer limits): display language; chilled liquid tempera- ture setpoint and range, remote reset tempera- ture range, set daily schedule/holiday for start/ stop, manual override for servicing, low and high ambient cutouts, number of compressors, low

YORK INTERNATIONAL

75

Page 74 Page 76
Image 75
Page 74 Page 76
Contents Form 150.64-EG1 AIR-COOLED Scroll ChillersTable of Contents Introduction Cooler SpecificationGeneral CompressorsMillennium Control Center Unit ON/OFF switchPower Panel Control Options Options and AccessoriesPower Options SINGLE-POINT NON-FUSED Disconnect SwitchDX Cooler 300 Psig 21 bar DWP Waterside Condenser and Cabinet OptionsCompressor Acoustic Sound Blanket Each This page intentionally left blank Method of Selection Selection DataGuide to Selection Selection RulesCalculate GPM Example Brine ChillingDetermine E.G. GPM Design Parameters English YcalSI Units Ycal 100 Water Pressure Drop1000 Model YCAL0051EC Ratings R-22 60Hz English UnitsModel YCAL0041EC Model YCAL0045EC33.4 42.7 32.5 45.2 31.6 47.9 30.7 50.7 29.7 53.7 105 110.0 115.0 120.0 125.031.3 42.2 30.5 44.7 29.6 47.4 28.7 50.2 27.8 53.2 32.4 42.5 31.5 45.0 30.6 47.6 29.7 50.4 28.7 53.4Model YCAL0055EC Model YCAL0061ECModel YCAL0065EC 46.0 59.0 44.7 62.3 43.4 65.8 31.6 48.6 30.6 51.3 42.3 58.2 41.2 61.4 39.9 64.8 29.0 48.0 28.0 50.643.8 58.5 42.6 61.8 41.3 65.2 30.0 48.3 29.0 50.9 45.3 58.8 44.0 62.1 42.7 65.6 31.1 48.5 30.1 51.225.0 30.0 35.0 40.0 45.0 50.0 Ratings R-22 60Hz SI Units172.2 43.1 166.0 47.5 159.3 52.3 152.2 57.7 Ratings R-22 50Hz English Units 45.0 34.8 28.0 37.0 27.2 39.5 26.3 42.1 25.4 44.9 40.0 34.3 25.7 36.5 25.0 39.0 24.1 41.6 23.2 44.442.0 34.5 26.6 36.7 25.8 39.2 25.0 41.8 24.1 44.6 44.0 34.7 27.5 36.9 26.7 39.4 25.9 42.0 24.9 44.834.0 13.5 33.8 13.135.7 12.2 40.0 10.645.0 48.2 38.1 51.0 36.9 54.0 35.8 57.1 34.6 60.5 40.0 47.5 35.0 50.3 33.9 53.3 32.8 56.4 31.7 59.742.0 47.8 36.2 50.6 35.1 53.6 34.0 56.7 32.8 60.0 44.0 48.0 37.4 50.9 36.3 53.8 35.2 57.0 34.0 60.3Ratings R-22 50Hz SI Units 146.1 34.7 140.9 38.4 135.3 42.5 129.3 47.1 Load Tons EER Displ Part Load Ratings R-22 English UnitsFull UnitLoad Scop Displ Part Load Ratings R-22 SILoad COP Displ YCAL055 FullPhysical Data 47400 Per Power ChillerSide Water 87.0125 250 500 1000 2000 4000 8000 DBA Sound Data50Hz Line Frequency Low Noise Fan R-22 Dimensions YCAL0041 English 13/16 DIA Mounting HOLEStyp90 9/16 45 5/16Dimensions YCAL0045 English 0045 59.2 43.5 Copper0045 63.2 43.7 13/16 25 3/8 B 13 5/8 20 1/16Dimensions YCAL0051 English 0051 59.2 42.6 Copper0051 64.3 42.9 Front View 0055 57.9 43.0 Copper Dimensions YCAL0055EC English62 5/8 TYP 15/16 34 11/1618 7/16 28 9/1615 1/16 144 13/16 0061 56.6 45.2 Copper Dimensions YCAL0061 English61 7/8 43 1/843 5/16 16 11/1625 3/8 28 9/16 0065 65.2 44.9 Dimensions YCAL0065 English62 5/8 0065 59.7 44.9 CopperCooler Coil END Dimensions YCAL0041 SI 554 23011150 249Dimensions YCAL0045 SI 0045 1503.5 1105.5 Copper0045 1605.9 1109.7 509 Dimensions YCAL0051 SI 0051 1504.6 1082.4 Copper0051 1633.0 1090.8 Cooler END Dimensions -YCAL0055 SI 645 726 1151249 468 131 965Dimensions YCAL0061 SI 249 424 1100Dimensions YCAL0065 SI 0065 1517.6 1140.3 Copper0065 1655.5 1141.1 TOP View For Units with ALL Point Loads Less Thatn 1404 LBS 637 KG Isolator SelectionsCIP-X ONE Inch Deflection Spring Isolator CROSS-REFERENCE751 to 1651 lbs 341 to 749 kg ND-XNeoprene Isolator CROSS-REFERENCE Up to 751 lbs Up to 341 kg215.9 34.9 355.6 311.2 Isolator Details contdSlrs 12 1/4Intentionally Left Blank Electrical Data Voltage Range Electrical Data 60Hz RLA Electrical Data 50Hz LUG Wire RangeCOMPR. #1 COMPR. #2 Fans Standard Power Supply Wiring Ycal 0014 Power WiringYork International York International Control Wiring Chilled Liquid Piping Application DataUnit Location FoundationInlet Delivery and Handling Guide SpecificationsPart 1 General Quality AssuranceRefrigerant Circuit Components Heat ExchangersControls Accessories and Options Power Connection and DISTRI- ButionYork International Part 3 Execution Installation York International ALL Right
Top Page Image Contents