York Millennium YCAS Series Installation Operation & Maintenance Download Page 100 | Manualshive

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YORK INTERNATIONAL

Technical Data

All dimensions
are in mm unless
otherwise noted.

DIMENSIONS – YCAS1063

NOTES:

1. Placement on a level surface free of obstructions (including snow, for winter operation) or air recirculation ensures rated performance,

reliable operation and ease of maintenance. Site restrictions may compromise minimum clearances indicated below, resulting in unpre-
dictable air flow patterns and possible diminished performance. YORK’s unit controls will optimize operation without nuisance high pres-
sure safety cutout; however, the system designer must consider potential performance degradation. Access to the unit control center
assumes the unit is no higher than on spring isolators. Recommended minimum clearances: Side to wall - 2m; rear to wall - 2m; control
panel end to wall - 1.2m; top - no obstructions allowed; distance between adjacent units - 3m. No more than one adjacent wall may be
higher than the unit.

LD04016

LD04015

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Summary of Contents for Millennium YCAS Series

Page 1: ...ENNIUM YCAS AIR COOLED LIQUID CHILLER YCAS 0693 0773 0783 0873 0953 3 COMPRESSOR YCAS 1063 1093 1163 1263 4 COMPRESSOR STYLE F 50 Hz 00258VIP YCAS 3 SYSTEM EPROMs Microprocessor Board 031 01798 002 YCAS 4 SYSTEM EPROMs Microprocessor Board I O Board 2 EPROM 031 01798 002 031 02018 001 I O Board 2 EPROM 031 02018 001 ...

Page 2: ...ard 23 Single Point Power Connection with Individual Circuit Protection 23 Single Point Power Connection with Combined Circuit Protection 23 Single Point Power Connection without Circuit Protection 23 Control Circuit Terminal Block 23 Building Automation System BAS Interface 23 Condenser Coil Protection 23 DX Cooler Options 24 21 bar 300 PSIG Waterside Design Working Pressure 24 38 mm 1 1 2 Insula...

Page 3: ...e Start 57 Wiring Diagrams Across the Line Start and Wye Delta Start YCAS0693 YCAS0953 59 Standard 3 Compressor Power Supplies Wye Delta Start 60 Wiring Diagram Across the Line Start 61 Standard Compressor Power Supplies Across the Line Start and Wye Delta Start 62 Connection Diagram 63B Connection Diagram Electrical Box 67B Elementary Diagram DXST Direct Drive Control Circuit 69 Connection Diagra...

Page 4: ...4 1 11 Microprocessor Board Layout 136 1 12 Logic Section Layout 137 1 13 Anti Recycle Timer 138 1 14 Anti Coincidence Timer 138 1 15 Evaporator Pump Control 138 1 16 Compressor Heater Control 138 1 17 Evaporator Heater Control 138 1 18 Pumpdown LLSV Control 138 1 19 Alarms 138 1 20 Run Status Chiller 139 1 21 Lead Lag Compressor Selection 139 1 22 3 or 4 Compressor Chiller Configuration 139 2 STA...

Page 5: ...165 7 3 Set Schedule Holiday Key 166 7 4 Manual Override Key 167 8 PROGRAMKEY 168 8 1 General 168 8 2 Program Key User Programmable Values 168 8 3 Programming Default Values 172 8 4 3 Compressor Condenser Fan Control 173 8 5 4 Compressor Condenser Fan Control 175 SECTION 9 MAINTENANCE 178 General Requirements 178 Daily Maintenance 178 Scheduled Maintenance 178 Chiller Compressor Operating Log 178 ...

Page 6: ...that the failure has occurred within the warranty period and that the unit has been operated within the designed parameters specified All warranty claims must specify the unit model serial number order number and run hours starts These de tails are printed on the unit identification plate The unit warranty will be void if any modification to the unit is carried out without prior written approval f...

Page 7: ...t is intended for cooling water or glycol solu tions and is not suitable for purposes other than those specified in these instructions Any use of the equipment other than its intended use or operation of the equip ment contrary to the relevant procedures may result in injury to the operator or damage to the equipment The unit must not be operated outside the design pa rameters specified in this ma...

Page 8: ...s Use of gloves and safety glasses are however recommended when working on the unit The build up of refrigerant vapor from a leak for ex ample does pose a risk of asphyxiation in confined or enclosed spaces and attention should be given to good ventilation For more comprehensive information on safety precautions for use of refrigerants and oils refer to the Materials Safety Data tables provided on...

Page 9: ...hat R22 does not represent a carcinogenic hazard to humans Occupational Recommended limit 1000 ppm v v 8 hr TWA 1250 ppm v v 12 hr TWA Exposure Limits Stability Unstable Conditions to Avoid Use in presence of naked flames red hot surfaces and high moisture levels Hazardous Reactions May react violently with sodium potassium barium and all other alkali and alkaline earth metals Incompatible materia...

Page 10: ...n highly recommended Section 4 PHYSICAL DATA Appearance Clear liquid gray to yellow or light brown tint Boiling Point 650 F Vapor Pressure 0 01 mmHg 20 C Specific Gravity water 1 0 94 0 97 Volatiles Percent by Volume 0 Odor Mild distinct Solubility in Water Negligible Evaporation Rate butyl acetate 1 Nil Section 5 FIRE AND EXPLOSION HAZARDS Flash Point by Cleveland Open Cup 230 300 C Flammable Lim...

Page 11: ...ratory Protection Use in well ventilated area Ventilation Local exhaust Protective Gloves Strongly recommended especially for prolonged exposure Eye Face Protection Goggles Firefighters should use NIOSH MNSA approved self contained breathing apparatus Use water fog to cool fire exposed containers USE WATER CAREFULLY NEAR EXPOSED BURNING LIQUIDS May cause frothing and splashing of hot material Sect...

Page 12: ...r 5 salt spray conditions shows breakdown of less than 1 8 either side of a scribed line equiva lent to ASTM D1654 rating of 6 All exposed power wiring is be routed through liquid tight non metallic conduit General Description The Air Cooled Screw Chiller utilizes many compo nents which are the same or nearly the same as a stan dard reciprocating chiller of a similar size This includes modular fra...

Page 13: ...separator The pres surized oil is then cooled in the condenser coils and piped back to the compressor for lubrication The com pressor design working pressure is 31 bar 450 PSIG Each chiller receives a 21 bar 300 PSIG low side and a 31 bar 450 PSIG high side factory test A 350 watt 115 1 60 cartridge heater is located in the compres sor The heater is temperature activated to prevent re frigerant co...

Page 14: ...n is controlled by the econo mizer solenoid valve This valve is controlled by the microprocessor The valve will remain off for the first 3 minutes of compressor operation After 3 minutes of operation the economizer solenoid valve will open if the slide valve position is Step 47 and the pressure ratio PR of discharge pressure to suction pressure is greater than 2 2 using the following formula Engli...

Page 15: ...ction The power and control sections have separate hinged latched and gasket sealed doors equipped with wind struts Each power compartment contains Compressor and fan starting contactors fan motor ex ternal overloads control circuit serving compressor ca pacity control compressor and fan contactor coils and compressor motor overloads The current transformers for the compressor motor over loads sen...

Page 16: ... under current and phase rotation The module mounted in the power panel utilizes a 7 segment display which provides operating status and fault diagnostic information The 7 segment display will display either a stationary or a flashing alphanumeric value which can be decoded by the operator A list of the codes follows HAXXX Normal motor OFF display Sequentially sweeps through the motor protection d...

Page 17: ... dip switch change is made power must be cycled off and on to the module to reprogram the module to the new valve Thermal Overload Three PTC positive temperature coefficient ther mistors in the motor windings of each phase provides thermal protection The sensor resistance stays rela tively constant at 1kΩ until a temperature of 130 C 266 F is sensed The sensor experiences a rapid rise in resistanc...

Page 18: ...1 0 0 1 0 0 0 73 0 1 0 0 1 0 0 1 74 0 1 0 0 1 0 1 0 75 0 1 0 0 1 0 1 1 76 0 1 0 0 1 1 0 0 77 0 1 0 0 1 1 0 1 78 0 1 0 0 1 1 1 0 79 0 1 0 0 1 1 1 1 80 0 1 0 1 0 0 0 0 81 0 1 0 1 0 0 0 1 82 0 1 0 1 0 0 1 0 83 0 1 0 1 0 0 1 1 84 0 1 0 1 0 1 0 0 85 0 1 0 1 0 1 0 1 86 0 1 0 1 0 1 1 0 87 0 1 0 1 0 1 1 1 88 0 1 0 1 1 0 0 0 89 0 1 0 1 1 0 0 1 90 0 1 0 1 1 0 1 0 91 0 1 0 1 1 0 1 1 92 0 1 0 1 1 1 0 0 93 0 1...

Page 19: ...0 0 0 1 114 0 1 1 1 0 0 1 0 115 0 1 1 1 0 0 1 1 116 0 1 1 1 0 1 0 0 117 0 1 1 1 0 1 0 1 118 0 1 1 1 0 1 1 0 119 0 1 1 1 0 1 1 1 120 0 1 1 1 1 0 0 0 121 0 1 1 1 1 0 0 1 122 0 1 1 1 1 0 1 0 123 0 1 1 1 1 0 1 1 124 0 1 1 1 1 1 0 0 125 0 1 1 1 1 1 0 1 126 0 1 1 1 1 1 1 0 127 0 1 1 1 1 1 1 1 128 1 0 0 0 0 0 0 0 129 1 0 0 0 0 0 0 1 130 1 0 0 0 0 0 1 0 131 1 0 0 0 0 0 1 1 132 1 0 0 0 0 1 0 0 133 1 0 0 0 ...

Page 20: ... 1 1 1 0 0 157 1 0 0 1 1 1 0 1 158 1 0 0 1 1 1 1 0 159 1 0 0 1 1 1 1 1 160 1 0 1 0 0 0 0 0 161 1 0 1 0 0 0 0 1 162 1 0 1 0 0 0 1 0 163 1 0 1 0 0 0 1 1 164 1 0 1 0 0 1 0 0 165 1 0 1 0 0 1 0 1 166 1 0 1 0 0 1 1 0 167 1 0 1 0 0 1 1 1 168 1 0 1 0 1 0 0 0 169 1 0 1 0 1 0 0 1 170 1 0 1 0 1 0 1 0 171 1 0 1 0 1 0 1 1 172 1 0 1 0 1 1 0 0 173 1 0 1 0 1 1 0 1 174 1 0 1 0 1 1 1 0 175 1 0 1 0 1 1 1 1 176 1 0 1...

Page 21: ...0 1 0 0 197 1 1 0 0 0 1 0 1 198 1 1 0 0 0 1 1 0 199 1 1 0 0 0 1 1 1 200 1 1 0 0 1 0 0 0 201 1 1 0 0 1 0 0 1 202 1 1 0 0 1 0 1 0 203 1 1 0 0 1 0 1 1 204 1 1 0 0 1 1 0 0 205 1 1 0 0 1 1 0 1 206 1 1 0 0 1 1 1 0 207 1 1 0 1 1 1 1 1 208 1 1 0 1 0 0 0 0 209 1 1 0 1 0 0 0 1 210 1 1 0 1 0 0 1 0 211 1 1 0 1 0 0 1 1 212 1 1 0 1 0 1 0 0 213 1 1 0 1 0 1 0 1 214 1 1 0 1 0 1 1 0 215 1 1 0 1 0 1 1 1 216 1 1 0 1 ...

Page 22: ...ut Board 1 Terminal 8 SYS 1 or Relay Output Board 2 Terminal 6 SYS 2 The 1TR SYS 1 or 2TR SYS 2 contacts open de energizing 1S SYS 1 or 2S SYS 2 1M SYS 1 or 3M SYS 2 remain energizes through interlocking contacts 1M SYS 1 or 3M SYS 2 Open ing of the 1TR SYS 1 or 2TR SYS 2 contacts de energizes 1S 2S and closes the normally closed 1S SYS 1 or 2S SYS 2 contacts energizing motor contactor 2M SYS 1 or...

Page 23: ... in areas where units may be exposed to acid rain Phenolic coated condenser coils Completed con denser coil assemblies are covered with a cured Phe Entry Used to confirm Set Point changes cancel in puts advance day and change AM PM Setpoints For setting chilled liquid temperature chilled liquid range remote reset temperature range Clock Used to set time daily or holiday start stop schedule and man...

Page 24: ...tart Factory Mounted UNIT ENCLOSURES Wire enclosure Heavy gauge welded wire mesh guards mounted on the exterior of the unit Factory or field mounted Louvered panels and wired guards Louvered pan els mounted over the exterior condenser coil faces and heavy gauge welded wire mesh guards mounted around the bottom of the unit Factory or field mounted Louvered panels condenser coils only Louvered panel...

Page 25: ... Remote Control Panel Seq Cntrl Automatic Lead Trans MP Multiple Point SP Single Point NF Non Fused TB Terminal Block Ser Service Ind Sys Brkr L Ext Handles Individual System Breaker Lockable External Handle 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 3637 POWER FIELD CONTROLS FIELD COMPRESSOR PIPING FIELD M D X M B Y S B C D B B S X M S D S T S B X F C C G G X X L C X P R S Low Te...

Page 26: ...NSER FIELD CABINET FIELD NOTES 1 Q DENOTES SPECIAL S Q 2 DENOTES STANDARD 3 X w in OPTIONS FIELD DENOTES NO OPTION SELECTED Wire Full Unit Enc Panels factory Wire Full Unit Enc Panels field Wire Louvered Enc Panels factory Wire Louvered Enc Panels field Louvered Cond Only Enc Panels factory Louvered Cond Only Enc Panels field Louvered Full Unit Enc Panels factory Louvered Full Unit Enc Panels fiel...

Page 27: ...e person on site It is recommended that the unit is periodically in spected during storage 3 INSPECTION Remove any transit packing and inspect the unit to en sure that all components have been delivered and that no damage has occurred during transit If any damage is evident it should be noted on the carrier s freight bill and a claim entered in accordance with the instructions given on the advice ...

Page 28: ...28 YORK INTERNATIONAL UNIT RIGGING Handling and Storage CORRECT WRONG LD05774 FIG 3 UNIT RIGGING CORRECT WRONG LD03515 FIG 4 LIFTING LUGS 2250mm 88 ...

Page 29: ...ls of suitable strength The channels should be spaced at the same centres as the vibration mounting holes in the unit base frame and must be at least 120 mm 4 3 4 wide at the contact points This will allow vibration isolators to be fitted if required Any ductwork or attenuators fitted to the unit must not have a total static pressure resistance at full unit air flow exceeding the capability of the...

Page 30: ...es not require shipping braces PIPEWORK CONNECTION General Requirements The following piping recommendations are intended to ensure satisfactory operation of the unit s Failure to follow these recommendations could cause damage to the unit or loss of performance and may invalidate the warranty The maximum flow rate and pressure drop for the cooler must not be ex ceeded at any time Refer to the Tec...

Page 31: ... of 21 watts per meter under the insulation is recommended supplied independently and controlled by an ambient temperature thermostat set to switch on at 21 C 37 F above the freezing tem perature of the liquid The liquid circulation pump must be controlled by the unit This will ensure that when the liquid temperature falls within 2 or 3 C 3 or 5 F of freezing the pump will start The cooler is prot...

Page 32: ...ore than 1 meter 3 feet of light con struction ductwork should be supported by the unit Where cross winds may occur any ductwork must be supported to prevent side loading on the unit If the ducts from two or more fans are to be combined into a common duct back flow dampers should be fit ted in the individual fan ducts This will prevent recir culation of air when only one of the fans is running Uni...

Page 33: ... STANDARD UNITS WITH MULTI POINT POWER SUPPLY WIRING Standard units require two 3 phase separately fused 3 wire supplies plus a ground per refrigerant system One supply to be connected to each of the power panels Connect each of the main 3 phase supplies to the cir cuit breakers non fused disconnect switches or termi nal boards located in the power panels using lug sizes detailed in the Technical ...

Page 34: ...ct Terminals 29 and 30 Figs 11 and 12 pages 39 and 40 close to indicate that a system is running Alarm Contacts Each system has a voltage free change over contact which will operate to signal an alarm condition when ever a system locks out or there is a power failure To obtain system alarm signal connect the alarm circuit to volt free terminals 23 and 24 Figs 11 and 12 pages 39 and 40 for No 1 Sys...

Page 35: ...35 YORK INTERNATIONAL FORM 201 18 NM4 POWER AND CONTROL PANEL LAYOUTS WYE DELTA TYPICAL FIG 8 POWER PANEL SECTION 00263VIP 4 ...

Page 36: ...36 YORK INTERNATIONAL FIG 8 POWER PANEL SECTION CONT D OPTIONS PANEL LAYOUT TYPICAL 00246VIP Installation ...

Page 37: ...LAYOUT LOGIC SECTION LAYOUT 00247VIP ITEM 1 2 3 4 5 6 7 8 9 10 DESCRIPTION Microprocessor Board Back of Keypad Back of Display I O Expansion Board 1 Power Supply Board Relay Output Board 1 Relay Output Board 2 Flow Switch Customer Connection Terminals I O Expansion Board 2 Circuit Breakers 6 7 1 3 2 9 8 10 5 4 4 ...

Page 38: ...38 YORK INTERNATIONAL FIG 10 LOGIC SECTION LAYOUT WITH CONTROL PANEL LAYOUT LOGIC SECTION LAYOUT WITH CONTROL PANEL LAYOUT 00248VIP Installation ...

Page 39: ...R EMERGENCY STOPS TERMINALS 13 19 TERMINALS 23 38 4 Print Temperature PWM Current PWM Flow Switch System No 1 Run System No 2 Run 13 13 13 13 13 14 15 16 17 18 19 23 24 25 26 27 28 29 30 System No 1 Alarm Contacts Chilled Liquid Circulating Pump Start System No 2 Alarm Contacts Chiller Run Isolator Auxiliary Interlock 31 32 ...

Page 40: ...USTOMER CONNECTIONS CUSTOMER CONNECTIONS Installation TRANSFORMERS POWER SUPPLY BOARD CIRCUIT BREAKERS RELAY BOARDS I O EXPANSION BOARD CUSTOMER CONNECTIONS Flow Switch Alarm Run etc MICROPROCESSOR CIRCUIT BOARD 28965A 115VAC SUPPLY ...

Page 41: ...rol transformer is mounted in the op tions panel It is important to check that the correct pri mary tapping has been used With the supply to the unit isolated remove the lid to the transformer box COMMISSIONING PREPARATION Commissioning of this unit should only be carried out by YORK Autho rized personnel The Millennium Microcomputer Control System Operating Instructions must be read in conjunctio...

Page 42: ...of at least 5 pipe diam eters on either side of the flow switch The flow switch should be connected to terminals 13 and 14 in the micropanel Figs 11 and 12 pages 39 and 40 Temperature sensor s Ensure the leaving liquid temperature sensor is coated with heat conductive compound part no 013 00890 000 and is inserted in the water outlet sensor pocket of the cooler This sensor also acts as the freeze ...

Page 43: ...e replaced by a solid column of liquid Fan Rotation As discharge pressure rises the condenser fans oper ate in stages to control the pressure Verify that the fan operation is correct for the type of unit Suction Superheat Check suction superheat at steady full compressor load only Measure suction temperature on the copper line about 150 mm 6 before the compressor suction ser vice valve Measure suc...

Page 44: ...d all operations are fully automatic After an initial period at minimum capacity on the lead compressor the control system will adjust the unit load depending on the chilled liquid tempera ture and rate of temperature change If high heat load is present the controller will increase the capacity of the lead compressor and or start up the other compressor If very little heat load is present the lead...

Page 45: ...lso cause additional pressure drop When using glycol solutions pressure drops are higher than with water see correction factors to be applied when using glycol solutions Special care must be taken not to exceed the maximum allowed A Correction Factor B Mean Temperature through Cooler C Concentration W W LD03504 FIG 13 FLOW RATE AND PRESSURE DROP CHARTS FIG 14 GLYCOL CORRECTION FACTORS FLOW RATE AN...

Page 46: ...ter as standard TEMPERATURE AND FLOWS SI UNITS Technical Data Excessive flow above the max GPM will damage the evaporator MODEL LEAVING WATER COOLER FLOW AIR ON NUMBER TEMPERATURE C L S 3 CONDENSER C YCAS MIN 1 MAX 2 MIN MAX MIN MAX 0693 4 4 13 0 14 0 50 0 17 7 51 7 0773 4 4 13 0 14 0 50 0 17 7 51 7 0783 4 4 13 0 14 0 50 0 17 7 51 7 0873 4 4 13 0 16 0 50 0 17 7 51 7 0953 4 4 13 0 16 0 50 0 17 7 51...

Page 47: ...57 47 57 47 57 47 57 Number of Rows 3 3 3 3 3 3 3 3 3 Fins per Meter 512 512 512 512 512 512 512 512 512 Condenser Fans Number Ckt 1 Ckt 2 3 3 3 3 4 4 4 4 4 4 5 5 4 4 4 4 4 4 Number Ckt 3 Ckt 4 4 4 4 4 4 3 3 3 3 4 4 4 4 Standard Fans Fan Motor HP kW 2 1 6 2 1 6 2 1 6 2 1 6 2 1 6 2 1 6 2 1 6 2 1 6 2 1 6 Fan Motor speed rev sec 15 8 15 8 15 8 15 8 15 8 15 8 15 8 15 8 15 8 Fan Diameter mm 900 900 900...

Page 48: ...DE PRESSURE BAR 10 REFRIGERANT SIDE PRESSURE BAR 20 MINIMUM PRIMARY COOLER FLOW MODEL WATER VOLUME LITERS SECOND YCAS LITERS MIN MAX 0693EC 2570 14 50 0773EC 2748 14 50 0783EC 2983 16 50 0873EC 2983 16 50 0953EC 3259 16 50 1063EC 3653 19 67 1093EC 4009 21 67 1163EC 4349 21 67 1263EC 4349 21 67 AIR STANDARD FANS 18 46 ENTERING HIGH PRESS FANS 18 46 CONDENSER C SLOW SPEED FANS 18 46 FAN STANDARD FAN...

Page 49: ...49 YORK INTERNATIONAL FORM 201 18 NM4 7 This page intentionally left blank ...

Page 50: ... 1 0 300 2 250 500 161 283 907 140 283 907 8 4 4 17 1 1093 380 436 600 450 500 2 1 0 300 2 250 500 183 283 907 140 283 907 7 4 4 17 1 1163 380 457 600 500 500 2 1 0 300 2 250 500 168 283 907 168 283 907 8 4 4 17 1 1263 380 494 600 500 600 2 1 0 300 2 250 500 183 283 907 183 283 907 8 4 4 17 1 Wire Range7 Over current OPTIONAL SINGLE POINT POWER SUPPLY CONNECTION WITH INDIVIDUAL SYSTEM CIRCUIT BREA...

Page 51: ...63 380 457 600 500 500 2 1 0 300 2 250 500 168 283 907 168 283 907 8 4 4 17 1 1263 380 494 600 500 600 2 1 0 300 2 250 500 183 283 907 183 283 907 8 4 4 17 1 Over current Wire Range ELECTRICAL SYSTEM 1 FIELD SUPPLIED WIRING Compressor 1 Data Compressor 3 Data Fan Data11 12 RLA Y LRA X LRA RLA Y LRA X LRA Qty FLA ea LRA ea 140 283 907 124 283 907 7 4 4 17 1 140 283 907 183 283 907 7 4 4 17 1 124 28...

Page 52: ...AD ELEMENT DISCONNECT SUPPLY CURRENT FUSE SIZE SWITCH SIZE 3 or 4 115V 1Ø 30A 30A 30A Non CE 50 60Hz 3 or 4 115V 1Ø 25A 30A 30A CE 50Hz CONTROL POWER SUPPLY UNITS WITH STANDARD CONTROL CIRCUIT TRANSFORMER NO OF CONTROL MCA RECOMMENDED NON FUSED COMPRESSORS POWER MAX LOAD DUAL ELEMENT DISCONNECT SUPPLY CURRENT FUSE SIZE SWITCH SIZE 3 or 4 400V 50 HZ 9 4A 15A Technical Data ...

Page 53: ...Actual wire size and number of wires per phase must be determined based on ampacity and job requirements using N E C wire sizing information The above recommendations are based on the National Electrical Code and using copper conductors only Field wiring must also comply with local codes 8 A ground lug is provided for each compressor system to accommodate field grounding conductor per N E C Articl...

Page 54: ...S TB1 TB2 TB3 TB4 Field Supply 2 Field Supply 1 Suitable for Across the Line Start 3 4 COMPRESSOR POWER CONNECTION OPTIONS FIG 16 MULTIPLE POINT POWER SUPPLY CONNECTION WITH INDIVIDUAL SYSTEM CIRCUIT BREAKERS FIG 15 MULTIPLE POINT POWER SUPPLY CONNECTION LD05558 NOTE 2 See page 55 for notes See page 55 for notes LD05559 NOTE 2 ELECTRICAL DATA Technical Data ...

Page 55: ...NAL SINGLE POINT POWER SUPPLY CONNECTION WITH INDIVIDUAL SYSTEM CIRCUIT BREAKERS LD05554 3 4 COMPRESSOR POWER CONNECTION OPTIONS NOTES 1 Dashed Line indicates Field Provided Wiring 2 The above recommendations are based on the National Electrical Code and using copper conductors only Field wiring must also comply with local codes ELECTRICAL DATA 7 ...

Page 56: ...RAGE VALUES FOR DXST COMPRESSORS COMPRESSOR MODEL AND VOLTAGE CODE DXS45LA MOTOR CODE A DXS36LA MOTOR CODE A DXS24LA MOTOR CODE TBD B5N B5E B6N B6E A5N A5E A6N A6E C5N C5E C6N C6E VOLTAGE CODE 17 28 40 46 50 58 17 28 40 46 50 58 17 28 40 46 50 58 MAX KW 150 150 150 150 113 150 150 150 150 150 113 150 105 105 105 105 80 105 MAX AMPS 492 428 259 214 193 171 492 428 259 214 193 171 338 294 178 147 13...

Page 57: ...57 YORK INTERNATIONAL FORM 201 18 NM4 FIG 18 ELEMENTARY DIAGRAM ACROSS THE LINE START ELEMENTARY DIAGRAM LD04172A 7 ...

Page 58: ...58 YORK INTERNATIONAL ELEMENTARY DIAGRAM FIG 19 ELEMENTARY DIAGRAM ACROSS THE LINE START LD04172B Technical Data ...

Page 59: ...ications Also refer to cautions on page 63A 5 To stop unit Emergency Stop with contacts other than those shown install the stop contact between 5 and 1 If a stop device is not installed a jumper must be connected between terminals 5 and 1 Device must have a minimum contact rating of 100VA at 115 volts A C 6 Alarm contacts are for annunciating alarm unit mal function Contacts are rated at 115V 100V...

Page 60: ...ILLERS NOT PRESENT ON 3 COMPRESSOR CHILLERS PRESENT ON CERTAIN MODEL CHILLERS NOT PRESENT ON 3 COMPRESSOR CHILLERS FIG 21 STANDARD 3 COMPRESSOR POWER SUPPLIES WYE DELTA START STANDARD 3 COMPRESSOR POWER SUPPLIES WYE DELTA START LD04174 Technical Data ...

Page 61: ...4 PRESENT ON CERTAIN MODEL CHILLERS NOT PRESENT ON 3 COMPRESSOR CHILLERS PRESENT ON CERTAIN MODEL CHILLERS NOT PRESENT ON 3 COMPRESSOR CHILLERS WIRING DIAGRAM ACROSS THE LINE START LD04173 FIG 22 ELEMENTARY DIAGRAM ACROSS THE LINE START 7 ...

Page 62: ...62 YORK INTERNATIONAL STANDARD COMPRESSOR POWER SUPPLIES ACROSS THE LINE START WYE DELTA START FIG 23 ELEMENTARY DIAGRAM LD04175 Technical Data ...

Page 63: ...nclosure or connected to power supplies in the control panel Additionally control wiring not connected to the Smart Panel should not be run through the cabinet This could result in nuisance faults CAUTION Any inductive devices relays wired in series with the flow switch for start stop into the Alarm circuitry or pilot relays for pump starters wired through motor contactor auxiliary contacts must b...

Page 64: ...FORM 201 18 NM4 YORK INTERNATIONAL YORK INTERNATIONAL 63B 64 LD04178 CONNECTION DIAGRAM FIG 24 CONNECTION DIAGRAM Technical Data 7 ...

Page 65: ...65 YORK INTERNATIONAL FORM 201 18 NM4 LD04179 7 ...

Page 66: ...66 YORK INTERNATIONAL Technical Data CONNECTION DIAGRAM FIG 25 CONNECTION DIAGRAM LD04180 Box Information continued on page 67 ...

Page 67: ...ATIONAL YORK INTERNATIONAL 67 67A FIG 26 CONNECTION DIAGRAM FIG 44 45 LEGEND PAGES 90 91 LD03281 FIG 27 CONNECTION DIAGRAM CONT D LD04181 CONNECTION DIAGRAM ELECTRIC BOX DXST DIRECT DRIVE CONNECTION DIAGRAM Box Information continued from page 66 ...

Page 68: ... CONNECTION DIAGRAM ELECTRICAL BOX YCAS YCAS0693 0953 STYLE F STANDARD REMOTE EVAP UNITS FIG 28 CONNECTION DIAGRAM LD04182 FIG 29 CONNECTION DIAGRAM CONNECTION DIAGRAM ELECTRICAL BOX YCAS YCAS0693 0953 STYLE F STANDARD REMOTE EVAP UNITS LD04183 Technical Data 7 ...

Page 69: ...69 YORK INTERNATIONAL FORM 201 18 NM4 ELEMENTARY DIAGRAM DXST DIRECT DRIVE CONTROL CIRCUIT FIG 30 ELEMENTARY DIAGRAM DXST DIRECT DRIVE CONTROL CIRCUIT LD04177 7 ...

Page 70: ...70 YORK INTERNATIONAL Technical Data ELEMENTARY DIAGRAM DXST DIRECT DRIVE CONTROL CIRCUIT FIG 31 ELEMENTARY DIAGRAM DXST DIRECT DRIVE CONTROL CIRCUIT LD04373 ...

Page 71: ...8 NM4 ELEMENTARY DIAGRAM DXST DIRECT DRIVE CONTROL CIRCUIT FIG 32 ELEMENTARY DIAGRAM DXST DIRECT DRIVE CONTROL CIRCUIT DETAIL C SEE INSTALLATION OPERATION AND MAINTENANCE MANUAL FOR JUMPER OF CONDENSER FANS FOR CHILLER MODEL LD04374 7 ...

Page 72: ...72 YORK INTERNATIONAL Technical Data CONNECTION DIAGRAM SYSTEM WIRING STANDARD REMOTE EVAP UNITS FIG 33 CONNECTION DIAGRAM SYSTEM WIRING LD04184 ...

Page 73: ...73 YORK INTERNATIONAL FORM 201 18 NM4 LD04185 CONNECTION DIAGRAM SYSTEM WIRING STANDARD REMOTE EVAP UNITS FIG 34 CONNECTION DIAGRAM SYSTEM WIRING 7 ...

Page 74: ...74 YORK INTERNATIONAL Technical Data FIG 35 ELEMENTARY DIAGRAM ELEMENTARY DIAGRAM DXST DIRECT DRIVE POWER CIRCUIT LD04260A ...

Page 75: ...75 YORK INTERNATIONAL FORM 201 18 NM4 ELEMENTARY DIAGRAM DXST DIRECT DRIVE POWER CIRCUIT LD04260B FIG 36 ELEMENTARY DIAGRAM 7 ...

Page 76: ...fer to cautions on the page 85A 5 To stop unit Emergency Stop with contacts other than those shown install the stop contact between 5 and 1 If a stop device is not installed a jumper must be connected between terminals 5 and 1 Device must have a minimum contact rating of 100VA at 115 volts A C 6 Alarm contacts are for annunciating alarm unit mal function Contacts are rated at 115V 100VA resis tive...

Page 77: ...77 YORK INTERNATIONAL FORM 201 18 NM4 FIG 38 STANDARD POWER SUPPLY WYE DELTA START STANDARD 4 COMPRESSOR POWER SUPPLIES WYE DELTA START LD04262 7 ...

Page 78: ...78 YORK INTERNATIONAL FIG 39 STANDARD POWER SUPPLY ACROSS THE LINE START STANDARD COMPRESSOR POWER SUPPLIES ACROSS THE LINE START YCAS1063 YCAS1263 LD04261 Technical Data ...

Page 79: ...79 YORK INTERNATIONAL FORM 201 18 NM4 This page intentionally left blank 7 ...

Page 80: ...NTERNATIONAL Technical Data STANDARD COMPRESSOR POWER SUPPLIES YCAS1063 YCAS1263 ACROSS THE LINE START WYE DELTA START FIG 40 STANDARD COMPRESSOR POWER SUPPLIES ACROSS THE LINE START AND WYE DELTA START LD04257 ...

Page 81: ...FORM 201 18 NM4 FORM 201 18 NM4 YORK INTERNATIONAL YORK INTERNATIONAL 81 81A SHLD G ISN RS485 PORT LD04258 FIG 40 STANDARD COMPRESSOR POWER SUPPLIES ACROSS THE LINE AND WYE DELTA START CONT D ...

Page 82: ...FORM 201 18 NM4 YORK INTERNATIONAL YORK INTERNATIONAL 81B 82 This page intentionally left blank This page intentionally left blank Technical Data 7 ...

Page 83: ...83 YORK INTERNATIONAL FORM 201 18 NM4 This page intentionally left blank 7 ...

Page 84: ...84 YORK INTERNATIONAL Technical Data FIG 41 CONNECTION DIAGRAM WYE DELTA START CONNECTION DIAGRAM SYSTEMS 1 2 LD04265 ...

Page 85: ...ower supplies in the control panel Additionally control wiring not connected to the Smart Panel should not be run through the cabinet This could result in nui sance faults CAUTION Any inductive devices relays wired in series with the flow switch for start stop into the Alarm circuitry or pilot relays for pump starters wired through mo tor contactor auxiliary contacts must be suppressed with YORK P...

Page 86: ...FORM 201 18 NM4 YORK INTERNATIONAL YORK INTERNATIONAL 85B 86 CONNECTION DIAGRAM SYSTEMS 3 4 FIG 42 CONNECTION DIAGRAM Technical Data LD04267 7 ...

Page 87: ...87 YORK INTERNATIONAL FORM 201 18 NM4 LD04268 7 ...

Page 88: ...88 YORK INTERNATIONAL Technical Data CONNECTION DIAGRAM ELECTRICAL BOX YCAS1063 1263 STYLE F STANDARD REMOTE EVAP UNITS FIG 43 CONNECTION DIAGRAM SYSTEM WIRING LD04264 ...

Page 89: ...89 YORK INTERNATIONAL FORM 201 18 NM4 CONNECTION DIAGRAM ELECTRICAL BOX YCAS1063 1263 STYLE F STANDARD REMOTE EVAP UNITS FIG 44 CONNECTION DIAGRAM LD04272 7 ...

Page 90: ...90 YORK INTERNATIONAL Technical Data FIG 45 ELEMENTARY DIAGRAM DXST DIRECT DRIVE CONTROL CIRCUIT ELEMENTARY DIAGRAM DXST DIRECT DRIVE CONTROL CIRCUIT LD04177 ...

Page 91: ...91 YORK INTERNATIONAL FORM 201 18 NM4 ELEMENTARY DIAGRAM DXST DIRECT DRIVE CONTROL CIRCUIT FIG 46 ELEMENTARY DIAGRAM DXST DIRECT DRIVE CONTROL CIRCUIT LD04695 7 ...

Page 92: ... Data DETAIL C SEE INSTALLATION OPERATION AND MAINTENANCE MANUAL FOR NUMBER OF CONDENSER FANS FOR CHILLER MODELS ELEMENTARY DIAGRAM DXST DIRECT DRIVE CONTROL CIRCUIT FIG 47 ELEMENTARY DIAGRAM DXST DIRECT DRIVE CONTROL CIRCUIT LD04757 ...

Page 93: ...93 YORK INTERNATIONAL FORM 201 18 NM4 CONNECTION DIAGRAM SYSTEM WIRING STANDARD REMOTE EVAP UNITS FIG 48 CONNECTION DIAGRAM SYSTEM WIRING LD04269 7 ...

Page 94: ...94 YORK INTERNATIONAL FIG 49 CONNECTION DIAGRAM SYSTEM WIRING CONNECTION DIAGRAM SYSTEM WIRING STANDARD REMOTE EVAP UNITS LD04270 Technical Data ...

Page 95: ...95 YORK INTERNATIONAL FORM 201 18 NM4 COMPRESSOR TERMINAL BOX SYSTEMS 1 THROUGH 4 LD04271 FIG 50 COMPRESSOR TERMINAL BOX SYSTEMS 1 4 7 ...

Page 96: ...ulting in unpre dictable air flow patterns and possible diminished performance YORK s unit controls will optimize operation without nuisance high pres sure safety cutout however the system designer must consider potential performance degradation Access to the unit control center assumes the unit is no higher than on spring isolators Recommended minimum clearances Side to wall 2m rear to wall 2m co...

Page 97: ...ORM 201 18 NM4 7 DIMENSIONS YCAS0693 0773 A F E J D I C H B G LD03977 LD03978 CENTER OF GRAVITY Copper YCAS X Y Z 0693 3561 1059 964 0773 3537 1066 1021 CENTER OF GRAVITY Alum YCAS X Y Z 0693 3465 1052 811 0773 3440 1056 807 ...

Page 98: ...tion ensures rated performance reliable operation and ease of maintenance Site restrictions may compromise minimum clearances indicated below resulting in unpre dictable air flow patterns and possible diminished performance YORK s unit controls will optimize operation without nuisance high pres sure safety cutout however the system designer must consider potential performance degradation Access to...

Page 99: ...LET 10 WATER OUTLET 2438 16 DIA MOUNTING HOLES TYP A B C D E F G H I J K L POWER ELEMENTS FOR SYS 1 3 POWER ELEMENTS FOR SYS 2 CONTROL PANEL 762 762 2235 ORIGIN 806 1453 1453 1453 1229 1400 32 32 POWER PANEL TOP VIEW LD03969 LD03970 CENTER OF GRAVITY Copper YCAS X Y Z 0783 3692 1066 1027 0873 3673 1066 1021 0953 3610 1067 1011 CENTER OF GRAVITY Alum YCAS X Y Z 0783 3595 1060 857 0873 3575 1060 853...

Page 100: ...ting in unpre dictable air flow patterns and possible diminished performance YORK s unit controls will optimize operation without nuisance high pres sure safety cutout however the system designer must consider potential performance degradation Access to the unit control center assumes the unit is no higher than on spring isolators Recommended minimum clearances Side to wall 2m rear to wall 2m cont...

Page 101: ... INTERNATIONAL FORM 201 18 NM4 7 DIMENSIONS YCAS1063 A G H B C D E F I O P J K L M N LD04017 LD04018 CENTER OF GRAVITY Alum YCAS X Y Z 1063 5228 1117 841 CENTER OF GRAVITY Copper YCAS X Y Z 1063 5284 1117 1002 ...

Page 102: ...ting in unpre dictable air flow patterns and possible diminished performance YORK s unit controls will optimize operation without nuisance high pres sure safety cutout however the system designer must consider potential performance degradation Access to the unit control center assumes the unit is no higher than on spring isolators Recommended minimum clearances Side to wall 2m rear to wall 2m cont...

Page 103: ...ORK INTERNATIONAL FORM 201 18 NM4 7 DIMENSIONS YCAS1093 A G M B C D E F H I J K L N LD03993 LD03994 CENTER OF GRAVITY Alum YCAS X Y Z 1093 4667 1117 808 CENTER OF GRAVITY Copper YCAS X Y Z 1093 4718 1117 956 ...

Page 104: ...tion ensures rated performance reliable operation and ease of maintenance Site restrictions may compromise minimum clearances indicated below resulting in unpre dictable air flow patterns and possible diminished performance YORK s unit controls will optimize operation without nuisance high pres sure safety cutout however the system designer must consider potential performance degradation Access to...

Page 105: ...IA RIGGING HOLES EACH SIDE A I B J C K D L E M F N G O H P 762 762 2235 ORIGIN 806 Y X 1453 1453 1453 923 1422 1422 1422 32 32 16 DIA MOUNTING HOLES TYP POWER ELEMENTS FOR SYS 1 3 POWER ELEMENTS FOR SYS 2 4 CONTROL PANEL POWER PANEL TOP VIEW LD04001 LD04002 CENTER OF GRAVITY Copper YCAS X Y Z 1163 5086 1117 1001 1263 5002 1117 992 CENTER OF GRAVITY Alum YCAS X Y Z 1163 4999 1117 841 1263 4907 1117...

Page 106: ...CLEARANCES Notes No obstructions allowed above the unit Only one adjacent wall may be higher than the unit Adjacent units should be 3 meters 10 feet apart LD05777 FIG 51 CLEARANCES 1 3 m 48 2 m 72 2 m 72 2 m 72 Technical Data ...

Page 107: ...WMR 2 552 1900 861 8 2 51 AWMR 2 53 2000 907 2 2 51 AWMR 2 530 2300 1043 3 2 51 AWMR 2 531 2552 1157 6 2 51 AWMR 2 532 3000 1360 8 2 51 Technical Data 7 ALUMINUM FIN COIL WEIGHT DISTRIBUTION BY MODEL KGS YCAS A B C D E F G H I J K L M N O P TOTAL 0693 547 863 816 477 518 547 968 1 091 362 1 176 7 364 0773 554 871 840 491 519 554 975 1 102 371 1 177 7 453 0783 549 827 908 484 471 376 549 913 1 070 ...

Page 108: ... BLACK BLACK RED GREEN BLACK 1093 RED RED RED RED RED GREEN BLACK RED RED RED RED RED GREEN BLACK 1163 RED RED RED BLACK BLACK GREEN RED BLACK RED RED RED BLACK BLACK GREEN RED BLACK 1263 RED RED RED BLACK BLACK GREEN RED BLACK RED RED RED BLACK BLACK GREEN RED BLACK ALUMINUM FINS SEISMIC ISOLATOR SELECTIONS VMC MODEL AWMR X XXX YCAS A B C D E F G H I J K L M N O P 0693 1 532 1 553 1 553 1 531 1 5...

Page 109: ... 521 1552 704 0 2 51 AWMR 2 53 2000 907 2 2 51 AWMR 2 530 2300 1043 3 2 51 AWMR 2 531 2552 1157 6 2 51 AWMR 2 532 3000 1360 8 2 51 7 COPPER FIN COIL WEIGHT DISTRIBUTION BY MODEL KGS YCAS A B C D E F G H I J K L M N O P TOTAL 0693 593 949 885 545 608 593 1 054 1 160 430 1 265 8 083 0773 601 957 908 559 609 601 1 062 1 170 439 1 266 8 172 0783 597 903 984 554 540 468 597 989 1 147 434 1 027 519 8 75...

Page 110: ...LACK GREEN RED 1093 RED GREEN GREEN RED RED GREEN RED RED GREEN GREEN RED RED GREEN RED RED 1163 RED GREEN GREEN BLACK BLACK GREEN RED RED RED GREEN GREEN BLACK BLACK GREEN RED RED 1263 RED GREEN GREEN BLACK BLACK GREEN RED RED RED GREEN GREEN BLACK BLACK GREEN RED RED VMC TYPE RD 3 COPPER FINS SEISMIC ISOLATOR SELECTIONS VMC MODEL AWMR X XXX YCAS A B C D E F G H I J K L M N O P 0693 1 532 2 531 2...

Page 111: ... B C D E R 3 or RD 3 5 5 3 375 2 875 2 5 0 5 4 125 0 563 0 25 139 7 85 8 73 2 63 5 12 7 104 8 14 4 6 3 R 4 or RD 4 6 25 4 625 2 75 3 0 0 5 5 0 0 563 0 375 158 7 117 6 69 8 76 2 12 7 127 0 14 4 9 6 LD04033 LD04737 LD04804 LD04805 R3 RD3 SERIES R4 RD4 SERIES ISOLATOR DETAILS 7 ...

Page 112: ...02974 AWMR 2 XXX A B C D E F G H I J K L M N X AWMR 1 10 1 2 6 3 5 8 3 4 3 1 2 1 3 4 1 2 9 5 8 8 1 2 4 1 4 10 1 2 3 4 50 553 11NC 5 8 AWMR 2 15 6 3 3 4 1 7 1 2 3 3 4 1 2 9 1 2 5 8 14 1 2 7 1 4 17 3 4 50 553 10NC 5 8 DIMENSIONS In ISOLATOR DETAILS Technical Data ...

Page 113: ...ght of the isolator To use the iso lator as blocking for the equipment insert a 10mm 1 4 shim between the upper load plate and ver tical uprights Lower the equipment on the block ing or shimmed isolators 5 Complete piping and fill equipment with water re frigerant etc 6 Turn leveling bolt of first isolator four full revolu tions and proceed to each mount in turn 7 Continue turning leveling bolts u...

Page 114: ... the cooler shell Low pressure vapor enters the compressor where pres sure and superheat are increased High pressure vapor is passed through the oil separator where compressor oil is removed and recirculated to the compressor via the oil cooler The high pressure oil free vapor is fed to the air cooled condenser coil and fans where the heat is removed The fully condensed liquid enters the economize...

Page 115: ...115 YORK INTERNATIONAL FORM 201 18 NM4 PROCESS AND INSTRUMENTATION DIAGRAM LD03486 FIG 53 PROCESS AND INSTRUMENTATION DIAGRAM Added to some models 7 7 ...

Page 116: ...IL PRESSURE BOT OIL TEMPERATURE BSP SUCTION PRESSURE CCCV COMPRESSOR CAPACITY CONTROL VALVE ECH CRANK CASE HEATER EEH EVAPORATOR HEATER SHPI HIGH PRESSURE CUT OUT STS SUCTION TEMPERATURE SENSOR RFTS REFRIGERANT FEED TEMPERATURE SENSOR R407C only XCMTB COMPRESSOR MOTOR TERMINAL BOX YELSSV ECONOMIZER LIQUID SUPPLY SOLENOID VALVE ZCPR COMPRESSOR BCLT 1 RFTS 3 RFTS 2 STS 1 STS 3 BOT 3 CCCV 3 ECH 3 BDP...

Page 117: ...E BSP SUCTION PRESSURE CCCV COMPRESSOR CAPACITY CONTROL VALVE ECH CRANK CASE HEATER EEH EVAPORATOR HEATER SHPI HIGH PRESSURE CUT OUT STS SUCTION TEMPERATURE SENSOR RFTS REFRIGERANT FEED TEMPERATURE SENSOR R407C only XCMTB COMPRESSOR MOTOR TERMINAL BOX YELSSV ECONOMIZER LIQUID SUPPLY SOLENOID VALVE ZCPR COMPRESSOR BCLT 3 RFTS 2 RFTS 2 STS 1 STS 3 BOT 3 CCCV 3 ECH 3 BDP 3 BDT 3 BOP 3 SHPI 3 XCMTB 3 ...

Page 118: ... ECONOMIZER GAS IN DISCHARGE CASE OIL INLET FROM CONDENSER CODING COIL DISCHARGE GAS OUT OIL FILTER BLEED EVACUATION POINT OIL FILTER COVER PLATE CAPACITY CONTROL SOLENOID CAPACITY CONTROL 3 WAY VALVE IS LOCATED UNDER THE SOLENOID LIFTING LUG THREADED HOLE OIL PRESSURE TRANSDUCER LOCATION ROTOR CASE STATOR LOCKING BOLT LD03668 Technical Data ...

Page 119: ...119 YORK INTERNATIONAL FORM 201 18 NM4 COMPRESSOR COMPONENTS CONT D FIG 57 COMPRESSOR COMPONENTS LD03669 7 ...

Page 120: ...120 YORK INTERNATIONAL COMPRESSOR COMPONENTS CONT D FIG 58 COMPRESSOR COMPONENTS LD03670 Technical Data ...

Page 121: ...121 YORK INTERNATIONAL FORM 201 18 NM4 COMPRESSOR COMPONENTS CONT D FIG 59 COMPRESSOR COMPONENTS LD03671 7 ...

Page 122: ...ESSOR COMPONENTS CONT D FIG 60 COMPRESSOR COMPONENTS O RING MOTOR ROTOR MALE ROTOR LOCKING KEY MALE ROTOR FEMALE ROTOR O RING RELIEF VALVE ECONOMIZER PLUG SUPPORT RINGS LD03672 SLIDE VALVE RETURN SPRING SLIDE VALVE Technical Data ...

Page 123: ...UST BEARING 22 BEARING CLAMP NUT 23 BEARING SPACER SLEEVE 24 BEARING PRELOAD SPRING 25 O RING 26 BEARING BORE PLUG 27 DISCHARGE COVER 28 BEARING BORE PLUG 29 BEARING PRELOAD SPRING 30 BEARING SPACER SLEEVE 31 BEARING CLAMP NUT 32 REVERSE THRUST BEARING 33 THRUST SPACER SHIM 34 THRUST BEARINGS 35 SPACER SHIM 36 DISCHARGE RADIAL BEARING 37 LIP SEAL 38 DOWEL PIN 39 SUPPORT RING 40 ECONOMIZER PLUG 41 ...

Page 124: ...hase power requirements of the compressor See chiller nameplate Pages 25 26 12 Assure 115VAC Control Power has 30A mini mum capacity See Fig 12 page 40 13 Be certain all water temp sensors are inserted completely in their respective wells and are coated with heat conductive compound JOB NAME ______________________________ SALES ORDER _________________________ LOCATION _____________________________...

Page 125: ... 8 Set the Time and Date 9 Program the Daily Schedule start and stop times Panel Checks Power ON Both System Switches OFF 1 Apply 3 phase power and verify its value See Fig 8 page 35 2 Apply 115VAC and verify its value on the ter minal block in the lower left of the Power Panel Make the measurement between terminals 5 and 2 See Fig 12 page 40 The voltage should be 115VAC 10 3 Assure the heaters on...

Page 126: ...sure chart use entering air temperature 17 C 30 F for normal condensing temperature b The temperature of the liquid refrigerant out of the condenser should be not be more than 8 C 15 F less than the condensing temperature The tempera ture corresponding to the condensing pressure from the refrigerant temperature pressure chart The subcooling temperature of each system should be calculated by record...

Page 127: ...e and superheat of each system below SYS 1 SYS 2 SYS 3 SYS 4 Liq Line Press ____ ____ ____ ____ kPa PSIG Temp ____ ____ ____ ____ C F Liq Line Temp ____ ____ ____ ____ C F Subcooling ____ ____ ____ ____ C F Normally the thermal expansion valve need not be ad justed in the field If however adjustment needs to be made the expansion valve adjusting screw should be turned not more than one turn at a t...

Page 128: ...as well as fault history data from recent safety shut downs ON OFF ROCKER SWITCH This switch shuts down the entire chiller when placed in the OFF position The switch must be ON for the chiller to operate PROGRAM SETUP KEYS Entry Keys see Section 5 The numeric and associated keys are used for entering data required for programming the chiller The ENTER and keys are also used for scrolling through i...

Page 129: ...gerant systems are provided on the Mi croprocessor Board s External interface is available for control of the chiller via a YORK ISN System or YORK Remote Control Center In addition EMS BAS System connections are provided for remote cycling current limiting remote tem perature setpoint reset and alarm annunciation YCAS chillers each have a single split circuit evapora tor serving either 3 or 4 ind...

Page 130: ...ss of the time involved The battery is a 10 year lithium type but life will depend upon whether the Real Time Clock s internal clock cir cuit is energized With the clock OFF a rated life of approximately 10 years can be expected With the clock ON approximately 5 years The clock is enabled and disabled using a jumper on the microprocessor board If the chiller is shut down or power failure is expect...

Page 131: ...m operates the mo tor contactors starters solenoid valves and heaters which control system operation The relay boards are located in the logic section of the control panel s The boards convert 0 12VDC logic levels outputs from the Microprocessor Board to 115VAC levels used by the contactors valves etc The common side of all relays on the Relay Output Board is connected to 12VDC REG The open collec...

Page 132: ...ystem s motor specifications Internally the on board 3 C T s and internal circuitry allow the Motor Protector Module to protect against high motor current as programmed on the Motor Pro tector dip switches These switches are set at the fac tory according to motor specifications The module also provides phase rotation protection to assure the screw compressor does not rotate backwards A single phas...

Page 133: ...133 YORK INTERNATIONAL FORM 201 18 NM4 FIG 62 MOTOR PROTECTOR SIDE VIEW 29119A 29121A TOP VIEW TOP VIEW SIDE VIEW 29121A 29120A DISPLAY SWITCH PUSHED TO LEFT INDICATES ON ON 8 ...

Page 134: ...tion of the control panel The duration of the contact clo sure will determine the amount of adjustment Gener ally this input is used for purposes of demand limit and operates as follows Closing the input contact for a defined period of time allows reset of the Current Limit downward Con tact closure of 1 11 seconds will allow Current Lim iting to be adjusted downward from 105 by a maxi mum of 75 i...

Page 135: ... of 22 C 40 F the temperature offset would equal Reset Temp 4 sec 1 sec X 4 4 F 10 sec Reset Temp 66 7 Csec 10 sec 6 C 12 F To determine the new setpoint add the reset to the setpoint programmed into memory In the example above if the programmed setpoint 7 C 44 F the new setpoint after the 4 second contact closure would be 7 C 44 F 6 C 12 F 13 C 56 F This new setpoint can be viewed on the display ...

Page 136: ... Jump Contact Real Time Clock and Battery Backup I C Microprocessor I C label shows version NOTE Dimple is positioned at top edge Dip Switch Set 8 switches System Switches S2 System 1 S3 System 2 S4 System 3 S5 System 4 1 11 MICROPROCESSOR BOARD LAYOUT FIG 63 COMPONENT LAYOUT 2 5 1 26001A 4 3 MicroPanel Contents ...

Page 137: ...HZ MODEL LOGIC SECTION FIG 64 LOGIC SECTION LAYOUT ITEM 1 2 3 4 5 6 7 8 DESCRIPTION Microprocessor Board Back of Keypad I O Expansion Board 2 I O Expansion Board 1 Power Supply Board Relay Output Board 1 Relay Output Board 2 Flow Switch Customer Connection Terminals TB4 00262VIP 1 2 3 6 7 5 4 8 8 ...

Page 138: ...minutes After 5 minutes has elapsed the heater will shut off if the discharge temperature rises above 66 C 150 F and will turn on when the discharge tem perature is equal to or less than 66 C 150 F 1 17 EVAPORATOR HEATER CONTROL The evaporator heater is controlled by ambient tem perature When the ambient temperature drops below 4 C 40 F the heater is turned on when the compres sors are turned off ...

Page 139: ...Section 8 page 168 When AUTO Lead Lag is utilized the micro attempts to balance run time between the two compressors A number of conditions can occur which will prevent this from happening Factors determining lead lag selection and the resulting lead lag determination are 1 The micro automatically defaults the lead to SYS 1 and the lag to SYS 2 if both compressors are ready to start Anti recycle T...

Page 140: ...Messages 2 6 System Fault Status Messages These messages are described in detail below with ex amples of each display In each example is used as applicable to represent the system number where mes sages apply to individual systems 2 2 GENERAL STATUS MESSAGES Unit Switch OFF This message indicates that the Chiller ON OFF Switch on the Control Panel is in the OFF position which will not allow the ch...

Page 141: ...indicated system will not run System Loading Requirement This message indicates that chilled liquid temperature is below the point where the microprocessor will bring the lead system on and or that the loading sequence has not loaded the chiller far enough to bring the lag system on The lag system will display this message until the load ing sequence is ready for the lag system to start 2 3 UNIT W...

Page 142: ...age 150 The message indicates that saturated suction tem perature on a system has dropped to 2 C 29 F and that any further temperature reduction could cause some icing of the evaporator tubes Saturated suction tempera ture is computed by the micro by converting suction pres sure to temperature For the first 3 minutes that the saturated suction tem perature is at or below 2 C 29 F any further compr...

Page 143: ...causing the shut down clears Restart will occur only after anti recycle timers are satisfied and cooling demand requires addi tional cooling A reset hysteresis is built into each safety so repetitive faulting and clearing will not occur in a short time period Continuous monitoring by the microprocessor assures that instantaneous reactions result When the chiller is shut down on one of these safeti...

Page 144: ...R22 models as long as the compressor continues to run the customer are connected in series with the flow switch es YCAS chillers have a single flow switch wired to the control panel If the flow switch opens all systems controlled by the panel it is connected to will shut down and a NO RUN PERM Permissive mes sage will be displayed Closing of the flow switch when flow is present will cause the mess...

Page 145: ...icked up by the High Oil Differential Safety since no flow will cause the differential through the oil piping to drop to zero EXAMPLE For ambients above 10 C 50 F the Low Oil Differ ential Safety is activated after 1 minute of compressor operation when the oil pressure differential must be greater than 7 bar 10 PSID After 2 minutes it must be greater than 1 4 bar 20 PSID after 3 minutes 2 bar 30 P...

Page 146: ... and must be greater than C O Programmed C O X Time 1 33 3 This transient cutout value increases with time until after 30 seconds it equals the programmed cutout value If the suction pressure falls below the value as calcu lated by the formula relative to time the system will shut down on a low suction pressure fault If the suc tion pressure rises above the programmed cutout value the 30 second ti...

Page 147: ...nual reset is accomplished by removing 115VAC control power from the micro panel after the motor sensors have sufficient time to cool Details relating to operation of the Motor Protec tion Module can be found on page 16 The External Motor Overload is responsive to motor current When the overload relay senses single phase operation locked rotor current in excess of 10 seconds or sustained current o...

Page 148: ... data about the operation of the chiller This is particularly useful during commissioning moni toring the operation of the chiller diagnosing potential future problems and service troubleshooting When a Display key is pressed the corresponding mes sage will be displayed and will remain on the display until another key is pressed Displayed data is in real time and is updated approxi mately every 2 ...

Page 149: ...rheat and compressor slide valve position Examples of these displays are as follows where is the appropriate system number The Cooler Inlet Temp display will only appear if the chiller is selected for R 407c Temperatures and pressures are either measured directly by transducers and temperature sensors or computed from these measurements as follows Saturated discharge and suction temperatures are c...

Page 150: ...d from 1 to 5 bar 20 to 70 PSIG for R 22 models and 0 3 to 5 bar 5 to 70 PSIG for R 407c models This display shows the average motor current in amps and average compressor motor current as a percentage of FLA All values are approximate Keep in mind that current in amps is an approximate value On the second press of the of the Motor Current Key the current limit values as set by the ISN Remote BAS ...

Page 151: ... for models us ing refrigerant R 407C Incorrect selection of this switch may cause serious damage to the chiller Closed The R 22 Mode MUST be selected for models using refrigerant type R 22 Incorrect selection of this switch may cause serious damage to the chiller S 1 2 A M B I E N T C O N T R O L S T A N D A R D S 1 2 A M B I E N T C O N T R O L L O W A M B I E N T S 1 3 R E F R I G E R A N T R 4...

Page 152: ...FUNCTION KEY Pressing the Function key only displays the same mes sage as pressing the Status key Pressing the Function key followed by another display key will scroll through all the data available under that key once E g press ing the Function key followed by the System 1 Data key will result in scrolling through the 5 displays shown in Section 3 3 without the need to press the System 1 Data key...

Page 153: ...ional printer is connected remotely as hard copy printouts The Operating Data Oper Data key provides a real time list of system operating data and programmed set tings The History key provides a comprehensive list of operating data and programmed settings at the in stant of fault on each of the last six faults local dis play or three faults remote printout which occurred on the chiller 4 2 OPER DA...

Page 154: ...and the pro grammed Target temperature The lower message gives the rate of change of the chilled liquid leaving tem perature in degrees per minute A minus sign indi cates falling temperature No sign indicates rising tem perature This message advises which system is programmed as the lead This message indicates the position of the optional aux iliary contacts for the evaporator water pump and the s...

Page 155: ...TIME 0 0 0 0 D H M S MOTOR CURRENT 0 AMPS 0 FLA SUCTION PRESSURE 125 PSIG DISCHARGE PRESSURE 131 PSIG OIL PRESSURE 130 PSIG SUCTION TEMPERATURE 68 4 DEGF DISCHARGE TEMPERATURE 68 8 DEGF OIL TEMPERATURE 68 8 DEGF SAT SUCTION TEMP 71 8 DEGF SUCTION SUPERHEAT 3 4 DEGF SAT DISCHARGE TEMP 74 5 DEGF DISCHARGE SUPERHEAT 6 3 DEGF SLIDE VALVE STEP 0 COOLER INLET REFRIG 44 6 DEGF LIQUID LINE SOLENOID OFF EC...

Page 156: ...ll cause the oldest set of data to be discarded in favor of storing the new shutdown data The Safety Shutdowns are numbered from 1 to 6 with number 1 always being the most recent If a remote printer is not connected pressing the His tory key allows the operator to locally scroll through information relating to the stored safety shutdowns on the control panel display If a remote printer is connecte...

Page 157: ...L T 6 6 C S E T P O I N T 6 7 C R A N G E 1 1 C This message displays the programmed chilled liquid setpoint and deviation control range programmed at the time of the fault This message indicates the outdoor Ambient Air Tem perature at the time of the fault This message indicates which system was in the lead at the time of the fault This message indicates the status of both the evapora tor pump si...

Page 158: ...the Safety Shutdown display D I S P L A Y S A F E T Y S H U T D O W N N O 1 1 T O 4 This message indicates the compressor motor current in as a percentage of Full Load Amps This message shows the system differential oil pressure at the time of the fault This message indicates the system oil line temperature at the time of the fault These messages indicate compressor suction gas satu ration tempera...

Page 159: ...MIXED LIQUID TEMP 51 3 DEGF COOLING RANGE 42 0 2 0 DEGF AMBIENT AIR TEMP 74 8 DEGF LEAD SYSTEM SYS 2 EVAPORATOR PUMP ON EVAPORATOR HEATER OFF ACTIVE REMOTE CONTROL NONE SOFTWARE VERSION C ACS 09 00 SYSTEM 1 DATA COMPRESSORS STATUS OFF RUN TIME 0 0 0 0 D H M S MOTOR CURRENT 0 AMPS 0 FLA SUCTION PRESSURE 125 PSIG DISCHARGE PRESSURE 131 PSIG OIL PRESSURE 130 PSIG SUCTION TEMPERATURE 68 4 DEGF DISCHAR...

Page 160: ...key is also used to scroll through available data when using the Program or Set Schedule Holiday keys 5 4 CANCEL KEY When the Cancel key is pressed the cursor will always return to the first character to be programmed in the display message This allows the operator to begin re programming if an error is made When the Cancel key is pressed the values already keyed in will be erased and the original...

Page 161: ...n tain this temperature within a programmed range The capacity is controlled by switching compressors on or off and by varying a load unload current to each com pressor slide valve to adjust the capacity of the com pressors The microprocessor controls chilled liquid temperature through a combination of Fuzzy Logic con trol and internal timers Fuzzy logic enables the micro to analyze the deviation ...

Page 162: ... chillers if the two compressors can not bring the load under control within 10 minutes the micro will maintain the lead compressor fully loaded at S V Step 75 unload the first lag compressor to Step 40 and bring on the 2nd lag compressor The second lag compressor will load until it reaches Step 40 From this point the compressors will be alternately loaded always loading the compressor with the le...

Page 163: ...ad point and it was scheduled to load the micro could split a load signal of 10 steps between system 1 and 2 It could only load SYS 1 2 steps while loading SYS 2 8 Steps Under these circumstances the two systems will not appear to equalize loading Compressor Unloading and Shutdown Sequence Whenever temperature is below the Setpoint unload ing pulses will be sent to open the unloading port on the c...

Page 164: ...ed value in memory from a remote device This feature is typically used for demand limiting or ice storage applications Reset is accomplished by timed closure of external contacts for a defined period of time and allows reset of the setpoint upward by up to 22 C 40 F above the setpoint pro grammed in memory see Section 1 7 The maximum allowable reset must be programmed into memory and can be a valu...

Page 165: ...ay mode in which the cursor will disappear and the live clock will be displayed 7 CLOCK KEYS O U T O F R A N G E T R Y A G A I N 7 1 GENERAL The microprocessor features a continuously running in ternal Clock and calendar and can display actual time as well as the day of the week and the date An auto matic schedule feature is provided for starting and stop ping the chiller on individual days of the...

Page 166: ...each day are scrolled through by re petitively pressing the or key To reprogram any of the daily schedules key in the new Start time then if necessary change the associated AM PM by pressing the or key The or key can only be pressed once to change AM PM If an error is made press Cancel and begin again Next key in the Stop Time the cursor will automati cally skip from AM PM to the first digit of th...

Page 167: ... an OFF period This key avoids the need to reprogram the Daily Schedule Once activated Manual Override is only active for a period of 30 minutes and the follow ing status message will be observed M A N U A L O V E R R I D E If a Warning Low Battery fault mes sage appears on the display the inter nal clock calendar and program set tings cannot be relied on for accuracy Default values are loaded int...

Page 168: ...wn D I S C H A R G E P R E S S U R E C U T O U T 2 7 2 B A R G 8 PROGRAM KEY 8 1 GENERAL The Program key is used to program 12 system operat ing parameters including cutout points for safeties an ticipatory unload points to avoid faults and anti recycle timer duration When the Program key is pressed the following mes sage will be displayed to indicate the display is in the Program Mode Pressing th...

Page 169: ...refrigerant suction pressure After the compressor starts and the pump down cycle is completed pump down to cutout or 30 seconds whichever comes first suction pressure is monitored as long as the compressor runs For the first 270 sec onds of running suction pressure can be lower than the programmed cutout but must be greater than This cutout value increases with time until after 270 seconds it equa...

Page 170: ...he pro grammed chilled liquid Control Range Section 6 This programmable value is password protected To program the Suction Pressure Cutout key in the re quired setting and press the Enter key to store the value into memory and scroll the next display High Ambient Temperature Cutout The High Ambient Cutout is used to select the ambient temperature above which the chiller may not operate If the ambi...

Page 171: ... load point The motor current safety will shut the com pressor down whenever current exceeds 115 If the programmable limit is set between 100 and 105 of full load current this safety will protect against excessive current causing compressor shutdown due to extremely high ambient high chilled liquid tempera ture and condenser malfunction caused by dirt or fan problems If the programmable limit is s...

Page 172: ...ed by the ENTER key to program the refrigerant type Press the Program key again key in the numbers 6140 then press Enter As P R O G R A M M O D E D E F A U L T S E T P O I N T S 1 Y E S 0 N O 1 P R O G R A M O P T I O N S S E T T O D E F A U L T V A L U E S 6140 Programmable Value Default Setting Discharge Pressure Cutout R22 28 bar 399 PSIG Low Ambient Cutout Std Amb 4 C 25 F Low Amb 4 C 25 F Hig...

Page 173: ...activated when the DP rises over 2 0 bar 290 PSIG The system will remain at the highest fan stage reached unless the OFF conditions given in the next paragraph are satisfied Condenser fan OFF conditions are governed by both the DP and OAT Fan staging will be decreased from the highest stage reached if both the DP and OAT re quirements are met For example if a system is at a fan stage of 4 and the ...

Page 174: ...0 8 S 2 15 16 2 BAR 11 4 BAR 18 3 C 22M 331 9 Y 3 17 19 17 2 BAR 12 4 BAR 21 1 C 23M 24M 332 10 S 4 13 17 19 18 3 BAR 13 4 BAR 23 9 C 21M 23M 24M 330 332 8 10 5 15 17 19 19 3 BAR 14 5 BAR 26 7 C 22M 23M 24M 331 332 9 10 3 6 13 15 17 19 20 0 BAR 15 2 BAR 29 4 C 21M 22M 23M 24M 330 331 332 8 9 10 TABLE 5 CONDENSER FAN CONTROL AND FAN CONTACTOR DATA FOR DXST UNITS WITH 5 FANS SYSTEM Newer versions of...

Page 175: ...6 which is activated when the DP rises over 2 0 bar 290 PSIG The system will remain at the highest fan stage reached unless the OFF conditions given in the next paragraph are satisfied Condenser fan OFF conditions are governed by both the DP and OAT Fan staging will be decreased from the highest stage reached if both the DP and OAT re quirements are met For example if a system is at a fan stage of...

Page 176: ...24M 331 332 9 10 3 6 13 15 17 19 20 0 BAR 15 2 BAR 29 4 C 21M 22M 23M 24M 330 331 332 8 9 10 1 14 15 2 BAR 10 3 BAR 15 6 C 27M 430 8 S 2 16 16 2 BAR 11 4 BAR 18 3 C 28M 431 9 Y 3 18 20 17 2 BAR 12 4 BAR 21 1 C 29M 30M 432 10 S 4 14 18 20 18 3 BAR 13 4 BAR 23 9 C 27M 29M 30M 430 432 8 10 5 16 18 20 19 3 BAR 14 5 BAR 26 7 C 28M 29M 30M 431 432 9 10 4 6 14 16 18 20 20 0 BAR 15 2 BAR 29 4 C 27M 28M 29...

Page 177: ...PED WITH 4 OR 5 FANS S 2 1 13 15 2 BAR 10 3 BAR 15 6 C 21M 330 8 S 2 15 16 2 BAR 11 4 BAR 18 3 C 22M 331 9 Y 3 17 17 2 BAR 12 4 BAR 21 1 C 23M 332 10 S 4 13 17 18 3 BAR 13 4 BAR 23 9 C 21M 23M 330 332 8 10 5 15 17 19 3 BAR 14 5 BAR 26 7 C 22M 23M 331 332 9 10 3 6 13 15 17 20 0 BAR 15 2 BAR 29 4 C 21M 22M 23M 330 331 332 8 9 10 1 14 15 2 BAR 10 3 BAR 15 6 C 27M 430 8 S 2 16 16 2 BAR 11 4 BAR 18 3 C...

Page 178: ... section for courses of action Refrigerant Leaks Visually check the heat exchang ers compressors and pipework for damage and gas leaks Airflow obstructions Check the air cooled condenser coil intakes and adjacent areas are clear of foreign ma terials or obstructions e g paper leaves etc Operating conditions Read the operating pressures and temperatures at the control panel using the display keys a...

Page 179: ...essure Suction Temperature Suction Superheat Discharge Pressure Actual Discharge Temperature Oil Pressure Oil Temperature FLA Motor Oil Level example Oil Added gallons or liters Inlet Temperature Outlet Temperature Pressure Drop Flow Rate GPM or l s Air On Temperature Air Off Temperature Inlet Temperature Outlet Temperature Pressure Drop Flow Rate GPM or l s Leaving Liquid Refrigerant Temperature ...

Page 180: ... compressor and cooler heaters for operation X Sample compressor oil and replace oil if necessary1 X Leak check the chiller1 X Disconnect power source and lock out Check tightness of power wiring connections1 X MAINTENANCE REQUIREMENTS FOR YORK YCAS SCREW CHILLERS Reserved for customer use for any special site determined requirements 1 This procedure must be performed at the specified time interva...

Page 181: ...on of oil Cooler Check water flow Check water pH glycol strength Check water pressure drop Check heater mats Air cooled condensers Check for airflow obstructions Brush fins Clean with mild low pH cleaner Check fins Check fan motor bearings Check fans and fan guards Power Control system general Check panel condition Check all connections Check mains and control wiring Check compressor contactors Ch...

Page 182: ...parts should be made to your local YORK Sales and Service Center Recommended Compressor Oils The correct type of oil must be used in the unit as shown on the unit data plate and labels Standard units use the following oils Associated Drawings SPARE PARTS Models R22 General Arrangement Wiring Diagrams Schematic 201 18 W3 Connection 201 18 W4 Customer wiring Legend REFRIGERANT COMPRESSOR OIL R22 R40...

Page 183: ...NT TEMP displayed than the programmed operating temperature and confirm that the displayed value is limit approximately correct The warning message should clear when the ambient air temperature rises above the programmed operating limit Check the programmed settings are correct for the options fitted to the unit Measured temperature is incorrect Check sensor calibration location and wiring Chiller...

Page 184: ...are in open position DIFF is displayed High oil differential pressure Dirty blocked oil filter Check and change oil filter cartridge SYS LOW SUCTION Badly adjusted or faulty expansion Check superheat displayed valve Reduced evaporator performance Check for restricted chilled liquid flow Check for fouled tube surfaces Check superheat Low refrigerant charge Check subcooling is correct Check for leak...

Page 185: ... 99500 0 447 20 68 62450 0 676 30 86 40285 0 976 40 104 26635 1 34 50 122 18015 1 76 60 140 12440 2 20 70 158 8760 2 63 80 176 6290 3 04 90 194 4588 3 40 100 212 3400 3 71 110 230 2556 3 96 120 248 1946 4 17 130 266 1504 4 33 140 284 1174 4 46 150 302 926 4 57 Chilled Leaving Water Temperature CLT and Chilled Return Water Temperature CRT Sensors Temperature Resistance Voltage C F ohms VD 10 14 165...

Page 186: ...eed to in the con tract documents this warranty does not include the fol lowing costs and expenses 1 Labor to remove or reinstall any equipment mate rials or components 2 Shipping handling or transportation charges 3 Cost of refrigerant No warranty repairs or replacements will be made until payment for all equipment materials or components has been received by YORK ALL WARRANTIES AND GUARANTEES AR...

Page 187: ...8 172 4 196 91 1 80 176 200 93 3 82 179 6 204 95 6 84 183 2 208 97 8 86 186 8 212 100 0 88 190 4 216 102 2 90 194 220 104 4 92 197 6 224 106 7 94 201 2 228 108 9 96 204 8 232 111 1 98 208 4 236 113 3 100 212 240 115 6 102 215 6 244 117 8 104 219 2 F C C F 0 0 0 0 4 2 2 2 3 6 8 4 4 4 7 2 12 6 7 6 10 8 16 8 9 8 14 4 20 11 1 10 18 24 13 3 12 21 6 28 15 6 14 25 2 32 17 8 16 28 8 36 20 18 32 4 40 22 2 ...

Page 188: ... York Pennsylvania USA 17405 1592 Subject to change without notice Printed in USA Copyright by York International Corporation 2000 ALL RIGHTS RESERVED Form 201 18 NM4 700 New Release Tele 800 851 1001 www york com ...

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