York YCAV0157 Installation Operation & Maintenance

Air-cooled screw liquid chillers

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AIR-COOLED SCREW

LIQUID CHILLERS

Installation, Operation, Maintenance

Supersedes 201.21-NM1 (122)

Form 201.21-NM1 (1223)

035-20552-000

YCAV STYLE A

MODELS YCAV0157 to YCAV0267, 60 HZ

(150 TON to 260 TON)

E/V HIGH EFFICIENCY and S/P STANDARD EFFICIENCY

R134a

Issue Date:

December 19, 2023

Table of Contents

Summary of Contents for York YCAV0157

Page 1 AIR-COOLED SCREW LIQUID CHILLERS Installation, Operation, Maintenance Supersedes 201.21-NM1 (122) Form 201.21-NM1 (1223) 035-20552-000 YCAV STYLE A MODELS YCAV0157 to YCAV0267, 60 HZ (150 TON to 260 TON) E/V HIGH EFFICIENCY and S/P STANDARD EFFICIENCY R134a Issue Date: December 19, 2023...
Page 2 FORM 201.21-NM1 (1223) IMPORTANT! READ BEFORE PROCEEDING! GENERAL SAFETY GUIDELINES This equipment is a relatively complicated apparatus. which it is situated, as well as severe personal injury or During rigging, installation, operation, maintenance, death to themselves and people at the site. or service, individuals may be exposed to certain com- This document is intended for use by owner-authorized ponents or conditions including, but not limited to:...
Page 3 Planned Service Agreement that leverages real time and generalized conditions. In lieu of the traditional and historical data, delivering performance reporting, maintenance program, a Johnson Controls YORK corrective actions required and data enabled guidance Conditioned Based Maintenance (CBM) program can for optimal operation and lifecycle assurance.
Page 4 FORM 201.21-NM1 (1223) The Control/VSD Cabinet contains lethal High AC and DC voltages. Before performing service inside the cabinet, remove the AC supply feeding the chiller and verify using a non-contact voltage sensor. The DC Voltage on the VSD DC Bus will take 5 minutes to bleed off, after AC power is removed.
Page 5: Table Of Contents
FORM 201.21-NM1 (1223) TABLE OF CONTENTS SECTION 1 - GENERAL CHILLER SECTION 3 - RIGGING, HANDLING & STORAGE INFORMATION & SAFETY DELIVERY AND STORAGE ......... 26 INTRODUCTION .............9 INSPECTION ............26 WARRANTY .............9 MOVING THE CHILLER ........26 SAFETY ..............9 Lifting Weights ............26 Standards for Safety..........9 UNIT RIGGING ............
Page 6 FORM 201.21-NM1 (1223) TABLE OF CONTENTS (CONT’D) Grounding .............37 CHILLER ELECTRONIC COMPONENTS ..158 Water System ............37 Keypad ..............158 Flow Switch ............37 Display ..............159 Temperature Sensor(s) ..........37 Chiller Control Board .........160 Programmed Options ..........38 Relay Output Boards ..........161 Programmed Settings ..........38 VSD (Variable Speed Drive) ......161 Date &...
Page 7 FORM 201.21-NM1 (1223) TABLE OF CONTENTS (CONT’D) FLASH TANK DRAIN/FEED VALVE UNIT SETUP MODE ...........272 CONTROLLER .............185 DEFAULT PROGRAMMABLE VALUES ..274 Valve Controller & Control Algorithm ....185 SERIAL PORT CONNECTIONS ......275 ECONOMIZER CONTROL ........188 ANALOG INPUT CONNECTIONS ....276 CONDENSER FAN CONTROL ......189 DIGITAL INPUT CONNECTIONS ....278 VSD TEMPERATURE CONTROL/FAN ANALOG OUTPUT CONNECTIONS ....280...
Page 8 Fig 24A - Inverter Power Components ....148 Table 24 - Digital Output Connections ....281 Fig 25 - Glycol Pump & Fill Tube Locations ..149 Table 25 - Mustang Chiller YORK Talk Fig 26 - Glycol Piping & Fill Tube Locations ..150 Control Data ............284 Fig 27 - Compressor Components ......151...
Page 9: Section 1 - General Chiller Information & Safety
The most appropriate rigging and lifting method will depend on job specific factors, such as the • Only genuine YORK approved spare parts, oils, rigging equipment available and site needs. Therefore, coolants, and refrigerants must be used. Recom-...
Page 10: Responsibility For Safety
This manual and any other document supplied with the any machinery is primarily responsible for: unit are the property of YORK which reserves all rights. They may not be reproduced, in whole or in part, without •...
Page 11: Pressure Systems
FORM 201.21-NM1 (1223) Pressure Systems Refrigerants and Oils The unit contains refrigerant vapor and liquid under Refrigerants and oils used in the unit are generally non- pressure, release of which can be a danger and cause toxic, non-flammable and non-corrosive, and pose no injury.
Page 12: Section 2 - Product Description
LD10477 INTRODUCTION General System Description YORK YCAV R134a chillers are designed for water The Latitude (YCAV) Air Cooled Chiller line combines or glycol cooling. All units are designed to be located the best of modern screw compressor design with the outside on the roof of a building or at ground level.
Page 13: Compressor
FORM 201.21-NM1 (1223) An integral liquid cooled, transistorized, PWM, Variable Refrigerant gas is injected into the void created by the Speed Drive (VSD) is controlled by the chiller micro- un-meshing of the five lobed male and seven lobed fe- processor control panel to start/stop, select compressors male rotor.
Page 14: Evaporator
Product Description FORM 201.21-NM1 (1223) Motor cooling is provided by suction gas from the mechanical couplings and should be insulated by the evaporator flowing across the motor. Redundant over- contractor after pipe installation. load protection is provided using both internal thermistor and current overload protection on all three phases.
Page 15: Condensor
1.7X suction when the economizer solenoid is activated. The oil (YORK “L” oil – a POE oil used for all refriger- The liquid in the tank is fed to the evaporator.
Page 16: Oil Cooling
Product Description FORM 201.21-NM1 (1223) Current transformers sense each phase of motor current, Oil Cooling and send corresponding signals to the Chiller Logic Board. Current monitoring protects the compressor Oil cooling is provided by routing oil from the oil sepa- rator through several of the top rows of the condenser motors from damage due to: low motor current, high motor current, short circuit current, single phasing, and...
Page 17: Display
FORM 201.21-NM1 (1223) Display Keypad An operator keypad allows complete control of the The display consists of a liquid crystal 2 line by 40 system from a central location. The keypad utilizes characters per line display, with backlighting for outdoor an overlay to allow use in 5 languages.
Page 18: Variable Speed Drive (Vsd)
PRODUCT DESCRIPTION FORM 201.21-NM1 (1223) The power section of the drive is composed of four Variable Speed Drive (VSD) major blocks consisting of an AC to DC rectifier section with accompanying pre-charge circuit, a DC link filter The VSD (variable speed drive) is a liquid cooled, tran- sistorized, PWM inverter, which provides speed control section, a three phase DC to AC inverter section, and an output suppression network.
Page 19: Accessories & Options
FORM 201.21-NM1 (1223) Gate Bipolar Transistor (IGBT) modules mounted to a ing high voltage to the VSD Logic Board. A Current liquid cooled heatsink, and a IGBT Gate Driver Board, Transformer is included on each output phase assembly which provides the On and Off gating pulses to the to provide motor current information to the VSD logic IGBT’s as determined by the VSD Logic board.
Page 20: Dx Cooler Options
PRODUCT DESCRIPTION FORM 201.21-NM1 (1223) Louvered Panels (Full Unit) enclosure – Louvered DX COOLER OPTIONS panels over condenser coils and around the bottom of the unit (Factory- or field-mounted). 300 PSIG (21 bar) Waterside Design Working Pressure – The DX cooler waterside is designed and constructed for 300 PSIG (21 bar) working pressure.
Page 21: Unit Nomenclature
UNIT MODEL NUMBER NOMENCLATURE NOMENCLATURE The model number denotes the following characteristics of the unit. Y C A V - 0267 - S - A - 46 - V A A DEVELOPMENT CODE YORK DESIGN SERIES CHILLER STARTER - VSD AIR COOLED...
Page 22: Product Identification Number
PRODUCT DESCRIPTION FORM 201.21-NM1 (1223) COMPLETE PIN NUMBER DESCRIPTION Feature Description Option Description CONTRACT Contract Number Contract Number = {num} ORDER Order Quantity Order quantity = {ord_qty} USA Origin USA origin not required USA origin required SHIP WT Shipping Weight Crane/Rigging Shipping Weight = {lbs} Crane/Rigging Shipping Weight = {kg} MODEL...
Page 23 FORM 201.21-NM1 (1223) COMPLETE PIN NUMBER DESCRIPTION (CON'T) Feature Description Option Description BAS Interface (PIN 21) No BAS Reset/Offset required BAS/EMS Temp Reset/Offset BAS/EMS Current Reset/Offset BAS/EMS Both Temp and Current Reset/Offset ISN Microgateway Special BAS Reset/Offset required LCD (PIN 22) English LCD &...
Page 24 PRODUCT DESCRIPTION FORM 201.21-NM1 (1223) COMPLETE PIN NUMBER DESCRIPTION (CON'T) Feature Description Option Description Insulation (PIN 39) 3/4” Cooler Insulation 1-1/2” Cooler Insulation Special Cooler Insulation FLANGES Flanges (PIN 40) No Flanges required Weld Flange Kit required Victaulic Flange Kit required Special Flanges required FLOW Flow Switch (PIN 41)
Page 25 FORM 201.21-NM1 (1223) COMPLETE PIN NUMBER DESCRIPTION (CON'T) Feature Description Option Description PAINT Overspray Paint (PIN 53) X No Final Overspray Paint required Special Final Overspray Paint required ISOL Isolators (PIN 54) No Vibration Isolators required 1” Deflection Isolators required Seismic Isolators required Neoprene Pad Isolators required Special Vibration Isolators required...
Page 26: Section 3 - Rigging, Handling & Storage
RIGGING, HANDLING AND STORAGE FORM 201.21-NM1 (1223) SECTION 3 - RIGGING, HANDLING AND STORAGE LD19197 Rigging and lifting should only be done by a professional rigger in accordance with a written rig- ging and lifting plan. The most appropriate rigging and lifting method will depend on job specific factors, such as the rigging equipment available and site needs.
Page 27: Moving The Chiller
FORM 201.21-NM1 (1223) MOVING THE CHILLER LIFTING USING LUGS Prior to moving the unit, ensure that the installation Units are provided with lifting holes in the base frame site is suitable for installing the unit and is easily ca- which accept the accessory lifting lug set as shown in pable of supporting the weight of the unit and all as- the figure below.
Page 28: Unit Rigging
RIGGING, HANDLING AND STORAGE FORM 201.21-NM1 (1223) UNIT RIGGING LD10496 NOTE: Weights and approximate center of gravity location shown for base unit. Any options selected may add weight to the unit and affect the center of gravity. Locate the center of gravity through trial lifts to account for possible variations in unit configuration.
Page 29: Section 4 - Installation
FORM 201.21-NM1 (1223) SECTION 4 - INSTALLATION LOCATION REQUIREMENTS Any ductwork or attenuators fitted to the unit must not have a total static pressure resistance, at full unit To achieve optimum performance and trouble-free airflow, exceeding the capability of the fans installed service, it is essential that the proposed installation site in the unit.
Page 30: Location Clearances
INSTALLATION FORM 201.21-NM1 (1223) LOCATION CLEARANCES Installation Adequate clearances around the unit(s) are required for Place each mount in its correct position and lower the the unrestricted airflow for the air-cooled condenser coils unit carefully onto the mounts ensuring the mount en- and to prevent re-circulation of warm discharge air back gages in the mounting holes in the unit base frame.
Page 31 150 PSIG (10 bar) working pressure and hav- circulated when the ambient temperature approaches ing a 1” N.P.T. connection can be obtained from YORK freezing point. as an accessory for the unit. Alternatively, a differential...
Page 32: Water Treatment
Victaulic Groove type (See FIG. 4). Aerated, brackish or salt water is not recommended for use in the water system(s). YORK recommends that a water treatment specialist should be consulted to determine whether the proposed water composition will adversely affect the evaporator materials of carbon steel and copper.
Page 33: Refrigerant Relief Valve Piping
FORM 201.21-NM1 (1223) When ducting is to be fitted to the fan discharge it is REFRIGERANT RELIEF VALVE PIPING recommended that the duct should be the same cross- The evaporator is protected against internal refrigerant sectional area as the fan outlet and straight for at least overpressure by refrigerant relief valves.
Page 34: Power Wiring
In (not supplied by YORK). cold weather, this could cause serious damage to the chiller due to evaporator freeze-up. Do not remove power unless...
Page 35: Volts Free Contacts
FORM 201.21-NM1 (1223) Remote Run / Stop VOLTS FREE CONTACTS A Remote Run/Stop input is available for each pair of Voltage free contacts are rated at 115VAC, 100VA re- sistive load only. Inductive loads must be suppressed systems (1/3 & 2/4). These inputs require a dry contact to start and stop the system.
Page 36: Section 5 - Commissioning
To add oil to a circuit - connect a YORK hand oil pump (Part No. 470-10654-000) to the 1/4” oil charging valve Perform the commissioning using the detailed checks...
Page 37: Power Connections
FORM 201.21-NM1 (1223) Power Connections pump control freeze protection operation. It provides some freeze protection and must always be fully inserted Check that the customer power cables are connected cor- in the water outlet sensor well. rectly to the terminal blocks or optional circuit breaker. Programmed Options Ensure that connections of power cables within the panels to the circuit breaker or terminal blocks are tight.
Page 38: Interlocks
COMMISSIONING FORM 201.21-NM1 (1223) Interlocks on the chilled liquid temperature and rate of temperature change. If a high heat load is present, the controller will Verify that liquid is flowing through the cooler and that increase the speed of the compressor(s). heat load is present.
Page 39: Condensor & Fan Rotation
FORM 201.21-NM1 (1223) General Operation After completion of the above checks for System 1, switch OFF the ‘SYS 1’ switch on the keypad and repeat the process for each subsequent system. When all run correctly, stop the unit, switch all applicable switches to the ‘ON’...
Page 40: Section 6 - Technical Data
TECHNICAL DATA FORM 201.21-NM1 (1223) SECTION 6 - TECHNICAL DATA WATER PRESSURE DROP Pressure Drop Through YCAV Evaporators (English Units) 1000 LD10497 Water Flow Rate (GPM) Pressure Drop Through YCAV Evaporators (SI Units) Water Flow Rate (l/s) MODEL NUMBER YCAV COOLER 0157(S/P) 0157(E/V), 0177, 0187...
Page 41: Glycol Correction Factors
FORM 201.21-NM1 (1223) GLYCOL CORRECTION FACTORS GLYCOL CORRECTION FACTORS The cooler is designed in accordance with ARI- 590-92 which allows for an increase in pressure ETHYLENE GLYCOL 1.45 drop of up to 15% above the design value shown 1.40 on page 40. Debris in the water may also cause 1.35 additional pressure drop.
Page 42: Water Temp. And Flows
0267 NOTES: 1. For leaving brine temperature below 40°F (4.4°C), contact your nearest YORK office for application requirements. 2. For leaving water temperature higher than 60°F (15.6°C), contact the nearest YORK office for application guidelines. TEMPERATURE AND FLOWS (SI UNITS)
Page 43 FORM 201.21-NM1 (1223) This page intentionally left blank. JOHNSON CONTROLS...
Page 44: Physical Data
TECHNICAL DATA FORM 201.21-NM1 (1223) PHYSICAL DATA (ENGLISH - High Efficiency) HIGH EFFICIENCY Refrigerant R-134a Model Number (YCAV_____E/V) General Unit Data YCAV0157 YCAV0177 YCAV0187 YCAV0197 YCAV0207 YCAV0227 YCAV0247 Number of Independent Refrigerant Circuits Refrigerant Charge, R-134a, Ckt.-1/Ckt.-2, lbs 170/170 185/170 185/185...
Page 45 FORM 201.21-NM1 (1223) PHYSICAL DATA (SI - High Efficiency) HIGH EFFICIENCY Refrigerant R-134a Model Number (YCAV_____E/V) General Unit Data YCAV0157 YCAV0177 YCAV0187 YCAV0197 YCAV0207 YCAV0227 YCAV0247 Number of Independent Refrigerant Circuits Refrigerant Charge, R-134a, Ckt.-1/Ckt.-2, kg. 77/77 84/77 84/84 87/87...
Page 46 FORM 201.21-NM1 (1223) PHYSICAL DATA (ENGLISH - Standard Efficiency) STANDARD EFFICIENCY Refrigerant R-134a Model Number (YCAV_____S/P) General Unit Data YCAV0157 YCAV0177 YCAV0187 YCAV0207 YCAV0227 YCAV0247 YCAV0267 Number of Independent Refrigerant Circuits Refrigerant Charge, R-134a, Ckt.-1/Ckt.-2, lbs 162/162 170/170 185/170 192/175...
Page 47 FORM 201.21-NM1 (1223) PHYSICAL DATA (SI - Standard Efficiency) STANDARD EFFICIENCY Refrigerant R-134a Model Number (YCAV_____S/P) General Unit Data YCAV0157 YCAV0177 YCAV0187 YCAV0207 YCAV0227 YCAV0247 YCAV0267 Number of Independent Refrigerant Circuits Refrigerant Charge, R-134a, Ckt.-1/Ckt.-2, kg. 74/74 77/77 84/77 87/80...
Page 48 TECHNICAL DATA FORM 201.21-NM1 (1223) OPERATING LIMITATIONS AND SOUND DATA Contact Product Application Marketing for Sound Power Data JOHNSON CONTROLS...
Page 49: Electrical Data
FORM 201.21-NM1 (1223) ELECTRICAL DATA 2 COMPRESSOR POWER WIRING CONNECTIONS UNIT CONTROLS STANDARD CONTROL EVAPORATOR HEATER TRANSFORMERS VSD SYSTEM CONTACTORS TERMINAL BLOCK LD10598a FIG. 6 - SINGLE-POINT POWER SUPPLY CONNECTION WITH FIELD SUPPLIED CIRCUIT PROTECTION VSD CONTROL PANEL UNIT CONTROLS STANDARD CONTROL EVAPORATOR HEATER...
Page 50 TECHNICAL DATA FORM 201.21-NM1 (1223) HIGH EFFICIENCY 2-Compressor Units (See FIG. 7) (One Field Provided Power Supply Circuit to the Chiller. Field Connection to Factory provided Terminal Block (Standard) or Circuit Breaker (optional). Model Number System 1 System 2 Unit Short Circuit Control /Nameplate Withstand (KA)
Page 51 FORM 201.21-NM1 (1223) HIGH EFFICIENCY 2-Compressor Units (Con't) (One Field Provided Power Supply Circuit to the Chiller. Field Connection to Factory provided Terminal Block (Standard) or Circuit Breaker (optional). Field Wiring Lugs Field Wiring Lugs Field Wiring & Protection STD Terminal Block OPT Circuit Breaker Max.
Page 52 TECHNICAL DATA FORM 201.21-NM1 (1223) STANDARD EFFICIENCY 2-Compressor Units (See FIG. 6) (One Field Provided Power Supply Circuit. Field Connections to Factory provided Terminal Block (Standard), or Individual System Breakers(Optional). Model Number System 1 System 2 Control Unit Short Circuit /Nameplate Withstand (KA) Compressor...
Page 53 FORM 201.21-NM1 (1223) STANDARD EFFICIENCY 2-Compressor Units (Con't) (One Field Provided Power Supply Circuit. Field Connections to Factory provided Terminal Block (Standard), or Individual System Breakers(Optional). Field Wiring & Protection Field Wiring Lugs Field Wiring Lugs STD Terminal Block OPT Circuit Breaker Minimum Max.
Page 54: Electrical Notes
7. Local codes may take precedence. 8. Control KVA includes operational controls and evaporator heaters. 9. System inrush current is less than RLA due to the use of YORK Variable Speed Drive technology. Typical Compressor Starting Current ( .rst four seconds of startup):...
Page 55 FORM 201.21-NM1 (1223) This page intentionally left blank. JOHNSON CONTROLS...
Page 56: Elementary Wiring Diagram
TECHNICAL DATA FORM 201.21-NM1 (1223) ELECTRICAL WIRING ELEMENTARY CONTROL WIRING DIAGRAM LD12518 JOHNSON CONTROLS...
Page 57 FORM 201.21-NM1 (1223) ELEMENTARY CONTROL WIRING DIAGRAM (CON'T) LD12519 JOHNSON CONTROLS...
Page 58 TECHNICAL DATA FORM 201.21-NM1 (1223) ELEMENTARY POWER WIRING DIAGRAM - 2 COMPRESSOR YCAV CHILLER T (115VAC) LD12516 JOHNSON CONTROLS...
Page 59 FORM 201.21-NM1 (1223) ELEMENTARY POWER WIRING DIAGRAM - 2 COMPRESSOR YCAV CHILLER (CON'T) LD12517 JOHNSON CONTROLS...
Page 60: Connection Diagram
TECHNICAL DATA FORM 201.21-NM1 (1223) CONNECTION WIRING DIAGRAM - 2 COMPRESSOR YCAV CHILLER LD12514 JOHNSON CONTROLS...
Page 61 FORM 201.21-NM1 (1223) CONNECTION WIRING DIAGRAM - 2 COMPRESSOR YCAV CHILLER (CON'T) LD12515 JOHNSON CONTROLS...
Page 62 TECHNICAL DATA FORM 201.21-NM1 (1223) CONNECTION WIRING DIAGRAM - 2 COMPRESSOR YCAV CHILLER LD12512 JOHNSON CONTROLS...
Page 63 FORM 201.21-NM1 (1223) CONNECTION WIRING DIAGRAM - 2 COMPRESSOR YCAV CHILLER (CON'T) LD12513 JOHNSON CONTROLS...
Page 64: Location Label
TECHNICAL DATA FORM 201.21-NM1 (1223) LOCATION LABEL LD10519 JOHNSON CONTROLS...
Page 65 FORM 201.21-NM1 (1223) This page intentionally left blank. JOHNSON CONTROLS...
Page 66: Dimensions
Site restrictions may compromise minimum clearances indicated below, resulting in unpredictable air flow patterns and possible diminished performance. YORK’s unit controls will optimize operation without nuisance high pressure 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.
Page 67 FORM 201.21-NM1 (1223) DIMENSIONS - YCAV0157S/P Standard Efficiency English (Con't) 5/8" MOUNTING HOLES (TYP.) 1" 14 1/16" 1,435 2,098 1,933 1,055 SYS. 2 SYS. 1 APPROX. OPERATING WEIGHT 68" DISTRIBUTION (LB) 60" 88 1/8" 1" 1,301 1,984 1,666 10" ORIGIN 1,091 3 3/4"...
Page 68 Site restrictions may compromise minimum clearances indicated below, resulting in unpredictable air flow patterns and possible diminished performance. YORK’s unit controls will optimize operation without nuisance high pressure 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.
Page 69 FORM 201.21-NM1 (1223) DIMENSIONS - YCAV0157E/V High Efficiency English (Con't) 5/8" MOUNTING HOLES (TYP.) 14 1/16" 1,586 2,282 2,052 1" 1,140 SYS. 2 SYS. 1 APPROX. OPERATING WEIGHT 68" DISTRIBUTION (LB) 60" 88 1/8" 1,499 2,267 1,796 1" 10" ORIGIN 1,182 3 3/4"...
Page 70 Site restrictions may compromise minimum clearances indicated below, resulting in unpredictable air flow patterns and possible diminished performance. YORK’s unit controls will optimize operation without nuisance high pressure 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.
Page 71 FORM 201.21-NM1 (1223) DIMENSIONS - YCAV0177S/P Standard Efficiency English (Con't) 5/8" MOUNTING HOLES (TYP.) 14 1/16" 1" 1,592 2,304 2,062 1,145 SYS. 2 SYS. 1 APPROX. OPERATING WEIGHT 68" DISTRIBUTION (LB) 60" 88 1/8" 1" 1,504 2,276 1,804 10" ORIGIN 1,187 3 3/4"...
Page 72 Site restrictions may compromise minimum clearances indicated below, resulting in unpredictable air flow patterns and possible diminished performance. YORK’s unit controls will optimize operation without nuisance high pressure 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.
Page 73 FORM 201.21-NM1 (1223) DIMENSIONS - YCAV0177E/V High Efficiency English (Con't) MOUNTING HOLES (TYP.) 14 1/16" 1" SYS. 2 SYS. 1 60" 88 1/8" 1" 10" ORIGIN 3 3/4" 67 1/2" 85" 64" 48-1/2" VIEW D-D 40" 96" 87 3/8" 6" 10"...
Page 74 Site restrictions may compromise minimum clearances indicated below, resulting in unpredictable air flow patterns and possible diminished performance. YORK’s unit controls will optimize operation without nuisance high pressure 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.
Page 75 FORM 201.21-NM1 (1223) DIMENSIONS - YCAV0187S/P Standard Efficiency English (Con't) MOUNTING HOLES (TYP.) 14 1/16" 1" SYS. 2 SYS. 1 60" 88 1/8" 1" 10" ORIGIN 3 3/4" 67 1/2" 85" 64" 48-1/2" VIEW D-D 40" 96" 87 3/8" 6" 10"...
Page 76 Site restrictions may compromise minimum clearances indicated below, resulting in unpredictable air flow patterns and possible diminished performance. YORK’s unit controls will optimize operation without nuisance high pressure 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.
Page 77 FORM 201.21-NM1 (1223) DIMENSIONS - YCAV0187E/V High Efficiency English (Con't) MOUNTING HOLES (TYP.) 14 1/16" 1" SYS. 2 SYS. 1 60" 88 1/8" 1" 10" ORIGIN 3 3/4" 67 1/2" 85" 64" 48-1/2" VIEW D-D 40" 96" 87 3/8" 6" 10"...
Page 78 Site restrictions may compromise minimum clearances indicated below, resulting in unpredictable air flow patterns and possible diminished performance. YORK’s unit controls will optimize operation without nuisance high pressure 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.
Page 79 FORM 201.21-NM1 (1223) DIMENSIONS - YCAV0197E/V High Efficiency English (Con't) MOUNTING HOLES (TYP.) 14 1/16" 1" SYS. 2 SYS. 1 60" 88 1/8" 1" 10" ORIGIN 3 3/4" 67 1/2" 85" 64" 48-1/2" VIEW D-D 40" 96" 87 3/8" 6" 10"...
Page 80 Site restrictions may compromise minimum clearances indicated below, resulting in unpredictable air flow patterns and possible diminished performance. YORK’s unit controls will optimize operation without nuisance high pressure 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.
Page 81 FORM 201.21-NM1 (1223) DIMENSIONS - YCAV0207S/P Standard Efficiency English (Con't) MOUNTING HOLES (TYP.) 14 1/16" 1" SYS. 2 SYS. 1 60" 88 1/8" 1" 10" ORIGIN 3 3/4" 70 1/2" 80 5/8" 65 3/8" 48-1/2" VIEW D-D 40" 96" 87 3/8" 6"...
Page 82 Site restrictions may compromise minimum clearances indicated below, resulting in unpredictable air flow patterns and possible diminished performance. YORK’s unit controls will optimize operation without nuisance high pressure 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.
Page 83 FORM 201.21-NM1 (1223) DIMENSIONS - YCAV0207E/V HIGH Efficiency English (Con't) MOUNTING HOLES (TYP.) 14 1/16" 1" SYS. 2 SYS. 1 60" 88 1/8" 1" 10" ORIGIN 3 3/4" 56 5/8" 54 7/8" 85" 64" 48-1/2" VIEW D-D 40" 96" 87 3/8" 6"...
Page 84 Site restrictions may compromise minimum clearances indicated below, resulting in unpredictable air flow patterns and possible diminished performance. YORK’s unit controls will optimize operation without nuisance high pressure 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.
Page 85 FORM 201.21-NM1 (1223) DIMENSIONS - YCAV0227S/P Standard Efficiency English (Con't) MOUNTING HOLES (TYP.) 14 1/16" 1" SYS. 2 SYS. 1 60" 88 1/8" 1" 10" ORIGIN 3 3/4" 70 1/2" 80 5/8" 65 3/8" 48-1/2" VIEW D-D 40" 96" 87 3/8" 6"...
Page 86 Site restrictions may compromise minimum clearances indicated below, resulting in unpredictable air flow patterns and possible diminished performance. YORK’s unit controls will optimize operation without nuisance high pressure 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.
Page 87 FORM 201.21-NM1 (1223) DIMENSIONS - YCAV0227E/V High Efficiency English (Con't) MOUNTING HOLES (TYP.) 14 1/16" 1" SYS. 2 SYS. 1 60" 88 1/8" 1" 10" ORIGIN 3 3/4" 56 5/8" 57 7/8" 80 5/8" 65 3/8" 48-1/2" VIEW D-D 40" 96"...
Page 88 Site restrictions may compromise minimum clearances indicated below, resulting in unpredictable air flow patterns and possible diminished performance. YORK’s unit controls will optimize operation without nuisance high pressure 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.
Page 89 FORM 201.21-NM1 (1223) DIMENSIONS - YCAV0247S/P Standard Efficiency English (Con't) MOUNTING HOLES (TYP.) 14 1/16" 1" SYS. 2 SYS. 1 60" 88 1/8" 1" 10" ORIGIN 3 3/4" 56 5/8" 57 7/8" 80 5/8" 65 3/8" 48-1/2" VIEW D-D 40" 96"...
Page 90 Site restrictions may compromise minimum clearances indicated below, resulting in unpredictable air flow patterns and possible diminished performance. YORK’s unit controls will optimize operation without nuisance high pressure 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.
Page 91 FORM 201.21-NM1 (1223) DIMENSIONS - YCAV0247E/V High Efficiency English (Con't) MOUNTING HOLES (TYP.) 14 1/16" 1" SYS. 2 SYS. 1 60" 88 1/8" 1" 10" ORIGIN 3 3/4" 56 5/8" 57 7/8" 80 5/8" 65 3/8" 48-1/2" VIEW D-D 40" 96"...
Page 92 Site restrictions may compromise minimum clearances indicated below, resulting in unpredictable air flow patterns and possible diminished performance. YORK’s unit controls will optimize operation without nuisance high pressure 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.
Page 93 FORM 201.21-NM1 (1223) DIMENSIONS - YCAV0267S/P Standard Efficiency English (Con't) MOUNTING HOLES (TYP.) 14 1/16" 1" SYS. 2 SYS. 1 60" 88 1/8" 1" 1" 10" ORIGIN 3 3/4" 3 3/4" 56 5/8" 57 7/8" 80 5/8" 65 3/8" 48-1/2" VIEW D-D 40"...
Page 94 Site restrictions may compromise minimum clearances indicated below, resulting in unpredictable air flow patterns and possible diminished performance. YORK’s unit controls will optimize operation without nuisance high pressure 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.
Page 95 FORM 201.21-NM1 (1223) DIMENSIONS - YCAV0157S/P Standard Efficiency SI (Con't) 16 MOUNTING HOLES (TYP.) 1,435 2,098 1,933 1,055 SYS. 2 SYS. 1 APPROX. OPERATING WEIGHT 1727 DISTRIBUTION (KG) 1524 2239 1,301 1,984 1,666 1,091 ORIGIN 2756 1626 1232 VIEW D-D 1016 2438 2219...
Page 96 Site restrictions may compromise minimum clearances indicated below, resulting in unpredictable air flow patterns and possible diminished performance. YORK’s unit controls will optimize operation without nuisance high pressure 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.
Page 97 FORM 201.21-NM1 (1223) DIMENSIONS - YCAV0157E/V High Efficiency SI (Con't) 16 MOUNTING HOLES (TYP.) 1,586 2,282 2,052 1,140 SYS. 2 SYS. 1 APPROX. OPERATING WEIGHT 1727 DISTRIBUTION (KG) 1524 2239 1,499 2,267 1,796 1,182 ORIGIN 2756 1626 1232 VIEW D-D 1016 2438 2219...
Page 98 Site restrictions may compromise minimum clearances indicated below, resulting in unpredictable air flow patterns and possible diminished performance. YORK’s unit controls will optimize operation without nuisance high pressure 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.
Page 99 FORM 201.21-NM1 (1223) DIMENSIONS - YCAV0177E/V High Efficiency SI (Con't) MOUNTING HOLES (TYP.) SYS. 2 SYS. 1 1524 2239 ORIGIN 1714 2160 1626 1232 VIEW D-D 1016 2438 2219 10" WATER INLET 10" (3) RIGGING HOLES WATER OUTLET 2146 2867 (EACH SIDE) 3141 2169...
Page 100 Site restrictions may compromise minimum clearances indicated below, resulting in unpredictable air flow patterns and possible diminished performance. YORK’s unit controls will optimize operation without nuisance high pressure 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.
Page 101 FORM 201.21-NM1 (1223) DIMENSIONS - YCAV0177S/P Standard Efficiency SI (Con't) 16 MOUNTING HOLES (TYP.) 1,592 2,304 2,062 1,145 SYS. 2 SYS. 1 APPROX. OPERATING WEIGHT 1727 DISTRIBUTION (KG) 1524 2239 1,504 2,276 1,804 1,187 ORIGIN 2756 1626 1232 VIEW D-D 1016 2438 2219...
Page 102 Site restrictions may compromise minimum clearances indicated below, resulting in unpredictable air flow patterns and possible diminished performance. YORK’s unit controls will optimize operation without nuisance high pressure 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.
Page 103 FORM 201.21-NM1 (1223) DIMENSIONS - YCAV0187S/P Standard Efficiency SI (Con't) MOUNTING HOLES (TYP.) SYS. 2 SYS. 1 1524 2239 ORIGIN 1714 2160 1626 1232 VIEW D-D 1016 2438 2219 10" WATER INLET 10" (3) RIGGING HOLES WATER OUTLET 2146 2867 (EACH SIDE) 3141 2169...
Page 104 Site restrictions may compromise minimum clearances indicated below, resulting in unpredictable air flow patterns and possible diminished performance. YORK’s unit controls will optimize operation without nuisance high pressure 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.
Page 105 FORM 201.21-NM1 (1223) DIMENSIONS - YCAV0187E/V High Efficiency SI (Con't) MOUNTING HOLES (TYP.) SYS. 2 SYS. 1 1524 2239 ORIGIN 1714 2160 1626 1232 VIEW D-D 1016 2438 2219 10" 10" WATER INLET (3) RIGGING HOLES WATER OUTLET (EACH SIDE) 2146 2867 3141...
Page 106 Site restrictions may compromise minimum clearances indicated below, resulting in unpredictable air flow patterns and possible diminished performance. YORK’s unit controls will optimize operation without nuisance high pressure 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.
Page 107 FORM 201.21-NM1 (1223) DIMENSIONS - YCAV0197E/V High Efficiency SI (Con't) MOUNTING HOLES (TYP.) SYS. 2 SYS. 1 1524 2239 ORIGIN 1714 2160 1626 1232 VIEW D-D 1016 2438 2219 10" WATER INLET 10" (3) RIGGING HOLES WATER OUTLET (EACH SIDE) 2174 2851 3141...
Page 108 Site restrictions may compromise minimum clearances indicated below, resulting in unpredictable air flow patterns and possible diminished performance. YORK’s unit controls will optimize operation without nuisance high pressure 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.
Page 109 FORM 201.21-NM1 (1223) DIMENSIONS - YCAV0207S/P Standard Efficiency SI (Con't) MOUNTING MOUNTING HOLES (TYP.) HOLES (TYP.) SYS. 2 SYS. 2 SYS. 1 SYS. 1 1524 1524 2239 2239 ORIGIN ORIGIN 1791 1791 2048 2048 1661 1661 1232 1232 VIEW D-D VIEW D-D 1016 2438...
Page 110 Site restrictions may compromise minimum clearances indicated below, resulting in unpredictable air flow patterns and possible diminished performance. YORK’s unit controls will optimize operation without nuisance high pressure 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.
Page 111 FORM 201.21-NM1 (1223) DIMENSIONS - YCAV0207E/V High Efficiency SI (Con't) MOUNTING HOLES (TYP.) SYS. 2 SYS. 1 1524 2239 ORIGIN 1438 1393 2160 1626 1232 VIEW D-D 1016 2438 2219 10" 10" WATER OUTLET WATER INLET (4) RIGGING HOLES 2174 2851 (EACH SIDE) 2235...
Page 112 Site restrictions may compromise minimum clearances indicated below, resulting in unpredictable air flow patterns and possible diminished performance. YORK’s unit controls will optimize operation without nuisance high pressure 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.
Page 113 FORM 201.21-NM1 (1223) DIMENSIONS - YCAV0227S/P Standard Efficiency SI (Con't) MOUNTING HOLES (TYP.) SYS. 2 SYS. 1 1524 2239 ORIGIN 1791 2048 1661 1232 VIEW D-D 1016 2438 2219 10" WATER INLET 10" (3) RIGGING HOLES WATER OUTLET 2011 2912 (EACH SIDE) 3141 2145...
Page 114 Site restrictions may compromise minimum clearances indicated below, resulting in unpredictable air flow patterns and possible diminished performance. YORK’s unit controls will optimize operation without nuisance high pressure 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.
Page 115 FORM 201.21-NM1 (1223) DIMENSIONS - YCAV0227E/V High Efficiency SI (Con't) MOUNTING HOLES (TYP.) SYS. 1 SYS. 2 1524 2239 ORIGIN 1438 1393 2160 1626 1232 VIEW D-D 1016 2438 2219 10" 10" WATER OUTLET WATER INLET (4) RIGGING HOLES 2174 2851 (EACH SIDE) 2235...
Page 116 Site restrictions may compromise minimum clearances indicated below, resulting in unpredictable air flow patterns and possible diminished performance. YORK’s unit controls will optimize operation without nuisance high pressure 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.
Page 117 FORM 201.21-NM1 (1223) DIMENSIONS - YCAV0247S/P Standard Efficiency SI (Con't) MOUNTING HOLES (TYP.) SYS. 2 SYS. 1 1524 2239 ORIGIN 1438 1470 2048 1661 1232 VIEW D-D 1016 2438 2219 10" 10" WATER OUTLET WATER INLET (4) RIGGING HOLES 2011 2912 (EACH SIDE) 2235...
Page 118 Site restrictions may compromise minimum clearances indicated below, resulting in unpredictable air flow patterns and possible diminished performance. YORK’s unit controls will optimize operation without nuisance high pressure 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.
Page 119 FORM 201.21-NM1 (1223) DIMENSIONS - YCAV0247E/V High Efficiency SI (Con't) MOUNTING HOLES (TYP.) SYS. 2 SYS. 1 1524 2239 ORIGIN 1438 1470 2048 1661 1232 VIEW D-D 1016 2438 2219 10" 10" WATER OUTLET WATER INLET (4) RIGGING HOLES 2011 2912 (EACH SIDE) 2235...
Page 120 Site restrictions may compromise minimum clearances indicated below, resulting in unpredictable air flow patterns and possible diminished performance. YORK’s unit controls will optimize operation without nuisance high pressure 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.
Page 121 FORM 201.21-NM1 (1223) DIMENSIONS - YCAV0267S/P Standard Efficiency SI (Con't) MOUNTING HOLES (TYP.) SYS. 2 SYS. 1 1524 2239 ORIGIN 1438 1470 2048 1661 1232 VIEW D-D 1016 2438 2219 10" 10" WATER OUTLET WATER INLET (4) RIGGING HOLES 2011 2912 (EACH SIDE) 2235...
Page 122: Technical Data (Clearances)
TECHNICAL DATA FORM 201.21-NM1 (1223) TECHNICAL DATA - CLEARANCES (1.3 m) (2 m) LD10506 NOTES: 1. No obstructions allowed above the unit. 2. Only one adjacent wall may be higher than the unit 3. Adjacent units should be 10 feet (3 Meters) apart. JOHNSON CONTROLS...
Page 123 FORM 201.21-NM1 (1223) This page intentionally left blank. JOHNSON CONTROLS...
Page 124: Weight Dist. & Isolator Mounting
YORK sales office. Be aware, pounds and kilograms at the specific location, isolator weights will change with each option along with pos- position, and location measurements for each isolator.
Page 125: Isolator Mounting Positions
FORM 201.21-NM1 (1223) ISOLATOR MOUNTING POSITIONS Control Panel (3.75", 95mm) (48.5", 1231.9mm) (112.5", 2857.5mm) (224.75", 5708.7mm) YCAV0157S/P, YCAV0157E/V, and YCAV0177S/P LD10501 Control Panel (3.75", 95mm) (48.5", 1231.9mm) (112.5", 2857.5mm) (197.53", 5017.3mm) (265", 6731mm) YCAV0177E/V, YCAV0187S/P, YCAV0187E/V, and YCAV0197E/V LD10502 NOTE: Distances indicated are from the end of the chiller designated as X in FIG.8. JOHNSON CONTROLS...
Page 126 TECHNICAL DATA FORM 201.21-NM1 (1223) ISOLATOR MOUNTING POSITIONS (CON'T) Control Panel (3.75", 95mm) (48.5", 1231.9mm) (113.875", 2892.4mm) (194.5", 4940mm) (265", 6731mm) YCAV0207S/P and YCAV0227S/P LD10504 Control Panel (3.75", 95mm) (48.5", 1231.9mm) (112.5", 2857.5mm) (197.53", 5017.3mm) (252.38", 6410.5mm) (309", 7848.6mm) YCAV0207E/V and YCAV0227E/V LD10503 JOHNSON CONTROLS...
Page 127 FORM 201.21-NM1 (1223) ISOLATOR MOUNTING POSITIONS (CON'T) Control Panel (3.75", 95mm) (48.5", 1231.9mm) (113.875", 2892.4mm) (194.5", 4940mm) (252.375", 6410.3mm) (309", 7848.6mm) YCAV0247S/P, YCAV0247E/V and YCAV0267S/P LD10508 JOHNSON CONTROLS...
Page 128: Seismic Isolator Installation
SLRS-6-C2 has six springs and SLRS-9-C2 has nine springs. PIN 54 = S *Weight Range (lbs) *Weight Range (kg) Vendor P/N COLOR YORK P/N UP TO 358 LBS Up to 162 kg SLRS-2-C2-420 029-24585-006 358-442 LBS 162 to 201 kg...
Page 129 FORM 201.21-NM1 (1223) SLRS SEISMIC ISOLATOR INSTALLATION AND ADJUSTMENT TO INSTALL AND ADJUST MOUNTS 1. Supports for mountings must be leveled to installation's acceptable tolerances. 2. Mountings not subjected to seismic or wind forces do not require bolting to supports. 3.
Page 130: Neoprene Isolator Position
ND-DS 85.7 69.9 158.8 101.6 127.0 1/2-13x1" PIN 54 = N **Weight Range (lbs) **Weight Range (kg) COLOR YORK P/N YORK P/N UP TO 751 LBS Up to 341 kg ND-C Yellow 029-24584-001 751-1651 LBS 341 to 749 kg ND-D...
Page 131 LD10576 PIN 54 = 1 (See note below) For Units With All Load Points Less than 1404 LBS (637 KG) *Weight Range *Weight Range Vendor P/N Color YORK P/N (lbs) (kg) 239-384 LBS 108 to 174 kg CIP-B-450 029-24583-002 384-639 LBS...
Page 132 TECHNICAL DATA FORM 201.21-NM1 (1223) Illustration shows single spring CIP-B or CIP-C mount. Mounting may be EQUIPMENT BASE operated 1/2" above Free & Operating Dowel Pin is 3/8" dia. for Height. CIP-A & 1/2" thereafter NOTE- FERROUS HOUSING CIP Mounts are not to be used in seismic or wind load SIDE ACCESS INTERNAL...
Page 133: Refrigerant Flow Diagram
FORM 201.21-NM1 (1223) REFRIGERANT FLOW DIAGRAM OIL COOLER COIL OIL COOLER COIL CONDENSOR COIL CONDENSOR COIL FLASH FLASH TANK TANK COMPRESSOR COMPRESSOR SEPARATOR SEPARATOR EVAPORATOR EVAPORATOR Low Pressure Liquid Low Pressure Liquid Low Pressure Vapor Low Pressure Vapor High Pressure Vapor High Pressure Vapor Medium Pressure Vapor Medium Pressure Vapor...
Page 134: Process & Instrumentation Diagram
TECHNICAL DATA FORM 201.21-NM1 (1223) PROCESSES AND INSTRUMENTATION DIAGRAM OIL COOLER COIL OIL COOLER COIL CONDENSOR COIL CONDENSOR COIL FLOW COMP COMP EVAPORATOR EVAPORATOR CHILLER WATER CHILLER WATER FLOW FLOW SYSTEM COMPONENTS SYSTEM COMPONENTS MAJOR COMPONENTS MAJOR COMPONENTS MICROPROCESSOR CONTROL FUNCTIONS MICROPROCESSOR CONTROL FUNCTIONS STEPPER MOTOR VALVE STEPPER MOTOR VALVE...
Page 135: Component Locations
FORM 201.21-NM1 (1223) COMPONENT LOCATIONS CHILLER & VSD ELECTRICAL PANEL FANS KEYPAD/DISPLAY PANEL CONDENSOR DOOR COIL LD10477 COMPRESSOR FILTER GLYCOL DRIER SEPARATORS PUMP FIG. 11 - COMPONENT LOCATIONS JOHNSON CONTROLS...
Page 136: Fig 12 - Control And Vsd Cabinet Locations
TECHNICAL DATA FORM 201.21-NM1 (1223) COMPONENT LOCATIONS (CON'T) LD10578 FIG. 12 - CONTROL AND VSD CABINET COMPONENTS JOHNSON CONTROLS...
Page 137: Fig 13 - Chiller Control Board, Relay Boards, Microgateway, And Optional Circuit Breaker
FORM 201.21-NM1 (1223) COMPONENT LOCATIONS (CON'T) CHILLER MICROGATEWAY CONTROL BOARD (OPTIONAL) RELAY BOARD #1 LD10579 OPTIONAL RELAY BOARD #2 CIRCUIT BREAKER (Standard Unit will have terminal blocks. Input power to the chiller will be connected here (see FIG.-17)). FIG. 13 - CHILLER CONTROL BOARD, RELAY BOARDS, MICROGATEWAY, AND OPTIONAL CIRCUIT BREAKER JOHNSON CONTROLS...
Page 138: Fig 14 - Chiller Control Board, Relay Boards, And Microgateway
TECHNICAL DATA FORM 201.21-NM1 (1223) COMPONENT LOCATIONS (CON'T) CHILLER MICROGATEWAY CONTROL (OPTIONAL) RELAY BOARD #1 BOARD CLOCK JUMPER (CLK) RELAY BOARD #2 RS-232/485 JUMPER JP4, JP5, & JP6 LD10580 ▼ ▼ • • • ▲ ▲ JUMPER POSITION FIG. 14 - CHILLER CONTROL BOARD, RELAY BOARDS, AND MICROGATEWAY JOHNSON CONTROLS...
Page 139: Fig 15 - Vsd Logic Board
FORM 201.21-NM1 (1223) COMPONENT LOCATIONS (CON'T) LOGIC BOARD LD10582 FIG. 15 - VSD LOGIC BOARD JOHNSON CONTROLS...
Page 140: Fig 16 - Vsd Logic Board
FORM 201.21-NM1 (1223) COMPONENT LOCATIONS (CON'T) (COMPR 4 Over Load Adjust) (COMPR 3 Over Load Adjust) (COMPR 2 Over Load Adjust) (COMPR 1 Over Load Adjust) YORK MADE IN THE USA LD10590 FIG. 16 - VSD LOGIC BOARD JOHNSON CONTROLS...
Page 141: Fig 17 - Power Components
FORM 201.21-NM1 (1223) COMPONENT LOCATIONS (CON'T) 10CR FAN PUMP OPTIONAL CIRCUIT CONTROL AND CONTROL RELAY BREAKER VSD CABINET (Standard Unit will COOLING COIL CONTROL AND have terminal FLASH TANK FEED blocks) VSD CABINET AND DRAIN VALVE COOLING FAN TRANSFORMER CONTROLLER LD10583 4-9FU FUSES &...
Page 142: Fig 18 - Fan Contactors & 3T Transformers
TECHNICAL DATA FORM 201.21-NM1 (1223) COMPONENT LOCATIONS (CON'T) FAN CONTACTORS 4CR-9CR LD10584 3T TRANSFORMER (24VAC to SCR Gate Driver Board and VSD Logic Board) FIG. 18 - FAN CONTACTORS AND 3T TRANSFORMER JOHNSON CONTROLS...
Page 143: Fig 19 - Vsd Components
FORM 201.21-NM1 (1223) COMPONENT LOCATIONS (CON'T) 17-21 FU FUSES TRANSIENT (17 FU: 2T, 18 FU: VSD Logic / SUPPRESSOR BOARD SCR Trigger Board / (3-Phase Input) Pump Contactor, 4-6 CT 19 FU: 10T & 11T, 4-9 FU FUSES & CURRENT 20 FU: Relay Board #1, 14-16 FU FUSES TRANSFORMERS...
Page 144: Fig 20 - Vsd Components
TECHNICAL DATA FORM 201.21-NM1 (1223) COMPONENT LOCATIONS (CON'T) (VSD LOGIC and CABINET SCR Trigger Board COOLING 24 VAC Supply COOLING CONTACTORS COIL Transformer) 4CR-9CR ISOLATOR BOARD (Feeds VSD Logic Board) CURRENT TRANSFORMERS TRIGGER BOARD IGBT GATE SNUBBER DRIVER CAPS BOARDS (C7-C12) IGBT MODULES...
Page 145: Fig 21 - Vsd Components
FORM 201.21-NM1 (1223) COMPONENT LOCATIONS (CON'T) CURRENT CABINET TRANSFORMERS COOLING C13-C17 COIL COOLING FANS RELAYS TRANSIENT SUPPRESSOR BOARD W/ 11FU, 12FU, & 13 FU FUSES (3 Phase Input) 10CR FAN PUMP CONTROL RELAY LD10587 1L LINE INDUCTOR FIG. 21 - VSD COMPONENTS JOHNSON CONTROLS...
Page 146: Fig 22 - Inverter Power Components
TECHNICAL DATA FORM 201.21-NM1 (1223) COMPONENT LOCATIONS (CON'T) THE LINE INDUCTOR WILL REACH OPERATING LD10588 TEMPERATURES OF OVER 300° F. DO NOT OPEN PANEL DOORS DURING OPERATION. ASSURE THE INDUCTOR IS COOL WHENEVER WORKING NEAR THE INDUCTOR WITH POWER OFF. FIG.
Page 147: Fig 23 - Inverter Power Components
FORM 201.21-NM1 (1223) COMPONENT LOCATIONS (CON'T) WATER COOLED IGBT'S IGBT'S IGBT'S HEAT SINK SCR/DIODE MODULES SCR/DIODE MODULE LD10591 1RES & 2RES BUS CAPACITORS BANK EQUALIZING/BLEEDER RESISTORS LAMINATED STRUCTURE IGBT GATE DRIVER IGBT GATE BOARD #1 DRIVER BOARD #2 LD10592 IGBT'S IGBT'S FIG.
Page 148: Fig 24 - Inverter Power Components
TECHNICAL DATA FORM 201.21-NM1 (1223) COMPONENT LOCATIONS (CON'T) IGBT GATE DRIVER BOARD WATER COOLED LAMINATED BUS FILTER HEAT SINK BUS STRUCTURE CAPACITORS IGBT LD10593 FIG. 24 - INVERTER POWER COMPONENTS IGBT'S IGBT'S SCR/DIODE MODULES SCR/DIODE MODULES LD10594 1RES & 2RES BUS CAPACITORS BANK EQUALIZING/BLEEDER RESISTORS FIG.
Page 149: Fig 25 - Glycol Pump & Fill Tube Locations
FORM 201.21-NM1 (1223) GLYCOL SYSTEM COMPONENTS REAR VSD PANEL DETAIL "B" DETAIL "C" DETAIL "B" DETAIL "C" REAR VSD PANEL DETAIL "B" DETAIL "C" DETAIL "A" DETAIL "B" DETAIL "C" DETAIL "A" DETAIL "A" DETAIL "A" GLYCOL PUMP DETAIL "B" TYPICAL 4 PLACES GLYCOL FILL...
Page 150: Fig 26 - Glycol Piping & Fill Tube Locations
TECHNICAL DATA FORM 201.21-NM1 (1223) GLYCOL SYSTEM COMPONENTS (CON'T) GLYCOL FILL TUBE LD10597 FIG. 26 - GLYCOL PIPING AND FILL TUBE LOCATION JOHNSON CONTROLS...
Page 151: Fig 27 - Compressor Components
FORM 201.21-NM1 (1223) COMPRESSOR COMPONENTS FIG. 27 - COMPRESSOR COMPONENTS LD10596 JOHNSON CONTROLS...
Page 152: Equipment Start-Up Check Sheet
TECHNICAL DATA FORM 201.21-NM1 (1223) EQUIPMENT START-UP CHECK SHEET JOB NAME: _____________________________ UNIT CHECKS (NO POWER) The following basic checks should be made with the SALES ORDER #: ________________________ customer power to the unit switched off. LOCATION: _____________________________ Proper electrical lock out and tag pro- cedures must be followed.
Page 153 In the unlikely event it is necessary to add oil, con- positions. nect a YORK oil pump to the charging valve on the 14. Assure the glycol level in the VSD cooling system oil separator, but do not tighten the flare nut on the is 9-15 inches (23-28 cm) from the top of the fill delivery tubing.
Page 154: Panel Checks
SYSTEM 8. Press the STATUS Key. If the following message SWITCHES key are in the OFF position. appears, immediately contact YORK Product Technical Support. The appearance of this message 5. Verify that the voltage supply corresponds to the...
Page 155: Programmed Values
EQUIPMENT START-UP CHECK SHEET (CON'T) If the following message appears when the STATUS PROGRAMMED VALUES key is pressed, immediately contact YORK Product Technical Support. The appearance of this message 10. Program the required operating values into the indicates the chiller is a HIGH IPLV chiller operat- micro for cutouts, safeties, etc.
Page 156: Initial Start-Up
5 INITIAL START-UP - 7°F (2.77 - 3.78°C) subcooled liquid leaving the con- denser. YCAV0157's should have subcooling set at 10°F After the control panel has been programmed and the (5.56°C). An overcharged system should be guarded compressor heaters have been energized for at least 8 against.
Page 157: Leak Checking
FORM 201.21-NM1 (1223) EQUIPMENT START-UP CHECK SHEET (CON'T) This may be difficult to measure, The suction temperature should be taken 6” (13 mm) before the compressor suction service valve, due to test instrument error and the and the suction pressure is taken at the compressor difficulty generally encountered when suction service valve.
Page 158: Chiller Electronic Components
TECHNICAL DATA FORM 201.21-NM1 (1223) CHILLER ELECTRONIC COMPONENTS KEYPAD The ● (PERIOD/DECIMAL) key allows keying a decimal point into numeric values. An operator keypad allows complete control of the The +/- (PLUS/MINUS) key allows making numeric system from a central location. The keypad offers a values negative.
Page 159: Display
FORM 201.21-NM1 (1223) CHILLER ELECTRONIC COMPONENTS (CON'T) Pressing the ◄ (LEFT ARROW) key moves the DISPLAY opposite direction. The arrow keys also allow fast scrolling through data under keys such as HISTORY The 80 character (2 lines of 40 characters per line) by enabling the operator to move between subgroups display is a Liquid Crystal Display (LCD) used for of data such as Unit, System, and VSD data.
Page 160: Chiller Control Board
TECHNICAL DATA FORM 201.21-NM1 (1223) CHILLER ELECTRONIC COMPONENTS (CON'T) CHILLER CONTROL BOARD The Chiller Control Board is capable of directly receiving analog inputs from temperature sensors and transducers. An analog to digital converter (A/D) with an onboard 4 channel multiplexer (MUX) allows up to 48 analog inputs to be read.
Page 161: Relay Output Boards
FORM 201.21-NM1 (1223) CHILLER ELECTRONIC COMPONENTS (CON'T) Two 8 channel, 8 bit Digital to Analog Converters (D/A AC TO DC RECTIFIER Converter) on the Chiller Control Board supply the Feed and Drain Valve Controller signals to allow the controller The AC to DC Rectifier circuit utilizes a semi-converter to position the Flash Tank Feed and Drain Valves.
Page 162: Scr Trigger Board
NEVER short out a capacitor bank to discharge it during servicing. If a bleeder resistor is open and a capacitor bank will not discharge, immediately contact YORK Product Technical Sup- port. LD10610 FILTER CAPACITORS...
Page 163: 1L Line Inductor
FORM 201.21-NM1 (1223) CHILLER ELECTRONIC COMPONENTS (CON'T) 1L LINE INDUCTOR LD10613 IGBT'S IGBT'S LD10612 LAMINATED BUS STRUCTURE 1L LINE INDUCTOR The 5% impedance 1L Line Inductor has multiple The Laminated Bus Structure is a group of copper plates functions. 1L forms a low pass LC filter that filters the sandwiched together that connects the SCR/Diode Mod- pulsating DC from the AC to DC converter, to smooth ules, Bus Filter Capacitors, and IGBT’s.
Page 164: Vsd Logic Board
TECHNICAL DATA FORM 201.21-NM1 (1223) CHILLER ELECTRONIC COMPONENTS (CON'T) The VSD Logic Board controls the glycol pump and VSD LOGIC BOARD the cabinet cooling fans. Details on the controls are provided in the VSD Operation and Control section, Page 198. CONTROL PANEL TO VSD COMMUNICATIONS Communication between the VSD Logic Board and the...
Page 165: Ibgt Gate Driver Boards
FORM 201.21-NM1 (1223) CHILLER ELECTRONIC COMPONENTS (CON'T) Once communications is established, the Chiller Control CURRENT TRANSFORMERS Board will send a data packet on the data link once every second at 9600 baud. This data packet will include run, stop, and speed commands as well as request operating data from the VSD.
Page 166: Dv/Dt Output Suppression Network
TECHNICAL DATA FORM 201.21-NM1 (1223) CHILLER ELECTRONIC COMPONENTS (CON'T) DV/DT OUTPUT SUPPRESSION NETWORK liquid level is controlled by sequencing a stepper motor valve (Feed Valve) on the inlet of the flash tank. The controller opens and closes the feed valve to control the liquid level of the refrigerant in the Flash Tank based on commands from the Chiller Control Board.
Page 167: Dc Bus Voltage Isolation Board
FORM 201.21-NM1 (1223) CHILLER ELECTRONIC COMPONENTS (CON'T) DC BUS VOLTAGE ISOLATION BOARD AUTOTRANSFORMER LD10620 LD10624 The DC Bus Isolation Board allows the VSD Logic AUTOTRANSFORMER Board to read the voltage on the DC BUS without expos- ing the VSD Logic Board to the high voltage. Instead, The compressor and fan motors are designed to operate the DC Bus Isolation Board contains a resistor network at 460VAC on all voltage units.
Page 168: Chiller Configuration Jumpers
TECHNICAL DATA FORM 201.21-NM1 (1223) CHILLER CONFIGURATION JUMPERS There are a number of chiller configuration jumpers that VSD LOGIC TO CHILLER MICROPROCESSOR are factory wired into wire harnesses or plugs. These BOARD RS-485 COMMUNICATION jumpers typically never need to be reviewed unless in CONFIGURATION JUMPERS some unlikely situation, a chiller is incorrectly config- ured or a loose connection occurs.
Page 169: Max Vsd Frequency
FORM 201.21-NM1 (1223) CHILLER CONFIGURATION JUMPERS (CON'T) MAXIMUM VSD FREQUENCY/ MODEL DESIGNATOR The model number of the chiller determines the maxi- mum VSD frequency at 100% full speed. The maximum frequency is programmed by factory installed jumpers on the J7 plug of the Chiller Control Board. Three digital inputs determine a binary code, which determines the maximum frequency.
Page 170: Section 7 - Operation
OPERATION FORM 201.21-NM1 (1223) SECTION 7 - OPERATION OPERATING CONTROLS system is running, the evaporator heater is turned off. Anti-recycle Timer Both evaporator heater outputs will always be turned on and off together. An under voltage condition will keep A typical 5 or 10 minute anti-recycle timer is not the heater off until full voltage is restored to the system.
Page 171 FORM 201.21-NM1 (1223) OPERATING CONTROLS (CON'T) The Unit Switch should never be used Chiller Run Contact to shut down the chiller except in an emergency. When the switch is thrown, The Chiller Run dry contact is closed whenever any system is running. It is open when all systems are shut the compressors will immediately shut off.
Page 172: Basic Operating Sequence
OPERATION FORM 201.21-NM1 (1223) BASIC OPERATING SEQUENCE Once the precharge takes place, if the anti-recycle timer Start Sequence and Loading is timed out the chiller control system on the Chiller Control Board will select the number of compressors To initiate the start sequence of the chiller, the following to start and begin operation of the compressors.
Page 173: Number Of Compressors To Start
FORM 201.21-NM1 (1223) NUMBER OF COMPRESSORS TO START GENERAL OPTIONAL OPTIMIZED HIGH IPLV The number of compressors to start control logic varies On optimized IPLV chillers, the Number of between the standard and optional high IPLV chillers. Compressors to Start Logic will be used to determine Standard IPLV chiller control utilizes sequential logic how many compressors should be run when the unit that requires the micro to start 1 compressor at a time...
Page 174: Minimum Vsd Compressor Start/Run Frequency
OPERATION FORM 201.21-NM1 (1223) MINIMUM VSD COMPRESSOR START/RUN FREQUENCY MINIMUM VSD START FREQUENCY MINIMUM VSD RUN FREQUENCY The Minimum VSD Compressor Start Frequency is based on ambient temperature and determines the The Minimum VSD Compressor Run Frequency is based frequency (speed) the compressor(s) is ramped to at start. on ambient temperature and determines the minimum At higher ambients, higher speeds are needed to provide frequency (speed) the compressor(s) is permitted to run...
Page 175: Acceleration/Deceleration Rate
FORM 201.21-NM1 (1223) ACCELERATION/DECELERATION RATE WHEN STARTING/STOPPING COMPRESSORS VSD ACCELERATION AND DECELERATION RATES The acceleration rate changes with frequency and fol- lows the guidelines below: · Between 0 and 50 Hz, the acceleration is 10 Hz/ sec. · Between 50 and 200 Hz, the acceleration is 30.4 Hz/sec.
Page 176: Standard Iplv Capacity Control
OPERATION FORM 201.21-NM1 (1223) STANDARD IPLV CAPACITY CONTROL (Loading/Unloading and starting additional compressors) “Standard IPLV” Capacity Control is installed in the differential between discharge and suction pres- the chiller at the factory using a dedicated EPROM sure to be reduced to a point where it will not affect (software), part # 031-02476-001, for “Standard Only”...
Page 177: Fuzzy Logic Control
FORM 201.21-NM1 (1223) STANDARD IPLV CAPACITY CONTROL (CON'T) (Loading/Unloading and starting additional compressors) In this example, one compressor will be shut down when FUZZY LOGIC CONTROL the speed of the compressors drops to 200 Hz x (2-1)/2 = 100 Hz-20 Hz = 80 Hz. The fuzzy logic control in software makes decisions to increase or decrease speed according to the error or The restart frequency for the compressor(s) after remov-...
Page 178: Hot Water Starts
OPERATION FORM 201.21-NM1 (1223) STANDARD IPLV CAPACITY CONTROL (CON'T) (Loading/Unloading and starting additional compressors) TABLE 4 - FUZZY LOGIC LOADING/UNLOADING HOT WATER STARTS VS. ERROR On a hot water start under "best" case conditions, as- suming power has not been removed and the 120 second NEGATIVE ZERO POSITIVE...
Page 179: Optional Iplv Capacity Control
FORM 201.21-NM1 (1223) OPTIONAL HIGH IPLV CAPACITY CONTROL (Loading/Unloading and starting additional compressors) Optional “High IPLV” Capacity Control is installed Setpoint + CR, the microprocessor looks to see if in the chiller at the factory using a dedicated EPROM any of the lag compressors are not running. If any (software), part # 031-02476-002, for “High”...
Page 180: Fuzzy Logic
OPERATION FORM 201.21-NM1 (1223) OPTIONAL HIGH IPLV CAPACITY CONTROL (CON'T) (Loading/Unloading and starting additional compressors) With 2 compressors now running and a current VSD The load timer will also be set to 30 seconds and the frequency of 115 HZ, the start frequency will be unload timer will be set to 10 seconds.
Page 181: Hot Water Starts
FORM 201.21-NM1 (1223) OPTIONAL HIGH IPLV CAPACITY CONTROL (CON'T) (Loading/Unloading and starting additional compressors) In cases where temperature is dropping too fast, when As the temperature rises toward Setpoint – CR, the temperature is within the desired control range, the Chiller Control Board microprocessor’s fuzzy logic will Chiller Control Board microprocessor will be required begin factoring in the rate of change before continuing to...
Page 182: Load Limiting Control
OPERATION FORM 201.21-NM1 (1223) LOAD LIMITING CONTROL LOAD LIMITING TABLE 6 - CURRENT LIMIT LOAD LIMITING/UNLOADING The Load Limiting Controls are intended to prevent a system from reaching a safety trip level. Load CURRENT LIMIT SETPOINT UNLOADING limiting controls prevent loading or unload compressors Current Limit Setpoint to prevent tripping on a safety.
Page 183 FORM 201.21-NM1 (1223) LOAD LIMITING CONTROL (CON'T) Suction Pressure Load Limiting/Unloading VSD Internal Ambient Temperature Load Limiting Suction pressure load limiting helps to protect the VSD Internal Ambient temperature limiting helps pre- evaporator from freezing. A system is permitted to load vent the unit from tripping on the high internal cabinet normally as long as the Suction Pressure is above the temperature safety.
Page 184 OPERATION FORM 201.21-NM1 (1223) LOAD LIMITING CONTROL (CON'T) VSD Baseplate Temperature Load Limiting VSD Baseplate load limiting helps protect the unit from tripping on the high VSD Baseplate Temp Safety. A system is permitted to load normally as long as the VSD Baseplate temperature is below the VSD Baseplate Temperature Cutout –...
Page 185: Flash Tank Drain/Feed Valve Controller
FORM 201.21-NM1 (1223) FLASH TANK DRAIN AND FEED VALVE CONTROLLER LD10619 level in the Flash Tank is maintained at a proper level. VALVE CONTROLLER AND CONTROL The Level Sensor is a rod inserted into the reservoir ALGORITHM OPERATION connected to the side of the Flash Tank. The sensing rod has an active range of about 12”.
Page 186: Fig 32 - Led Locations
OPERATION FORM 201.21-NM1 (1223) FLASH TANK DRAIN AND FEED VALVE CONTROLLER After the first minute of operation, the MOP Setpoint is The Drain Valve, Controller, and Chiller Control Board ramped from the current calculated value to 68°F over Algorithm combination functions as an Electronic the next minute.
Page 187: Fig 33 - Power, Comms Led's
FORM 201.21-NM1 (1223) FLASH TANK DRAIN AND FEED VALVE CONTROLLER A pair of LED’s on the left side of the module when the valves are being pulsed. In most cases other (FIG. 33) indicate when the module is powered. The than start-up, they may appear to not light at all.
Page 188: Economizer Control
OPERATION FORM 201.21-NM1 (1223) ECONOMIZER CONTROL ECONOMIZER CONTROL If a motor temperature sensor exceeds 240 °F, the Econo- mizer Solenoid will de-energize to avoid overheating the The Economizer Solenoid controls a vapor feed to the hot motor. When the economizer solenoid is de-ener- economizer port on the compressor from the top of the gized, the compressor unload timer is set to 30 seconds Flash Tank.
Page 189: Condenser Fan Control
FORM 201.21-NM1 (1223) CONDENSOR FAN CONTROL FAN LOCATIONS 11 FAN UNITS - OMIT FAN 12 VSD/ 10 FAN UNITS - OMIT FANS 11 & 12 CONTROL 9 FAN UNITS - OMIT FANS 10,11 & 12 PANEL 8 FAN UNITS - OMIT FANS 9,10,11 & 12 LD10632 FAN BAFFLES FAN BAFFLES...
Page 190: Fig 35 - Standard Iplv Fan Control
OPERATION FORM 201.21-NM1 (1223) CONDENSOR FAN CONTROL (CON'T) Fan on and off control points will vary for standard Optimized IPLV Fan Control and optional optimized IPLV chillers. Unless controls Fan staging on and off points will be determined by the dictate all fans running due to high VSD ambient tem- peratures, fans will sequence on when a compressor ambient temperature.
Page 191: Vsd Temperature Control/Fan Control Operation
FORM 201.21-NM1 (1223) VSD TEMPERATURE CONTROL, OPERATION OF THE COOLANT PUMP, AND VSD CABINET COOLING FANS The Coolant pump and VSD Cabinet Cooling Fans will · VSD Internal Ambient Temp > 158°F (Cutout) run to cool the VSD whenever any of the following –...
Page 192: Remote Temperature Reset Control 1 9
10 VDC or 20 mA. Sending the minimum signal (0 VDC, 2 VDC, 0 mA, or 4 mA based on the OPTIONS Contact a local YORK ISN Representative for details key setting) causes the setpoint to revert back to its lo- on ISN controls and capabilities.
Page 193: Local Current Limit Control
FORM 201.21-NM1 (1223) REMOTE TEMPERATURE RESET CONTROL (CON'T) 0 – 10 VDC Reset Input 0 – 20 mA Reset Input A 0 VDC signal produces a 0°F reset. A 10 VDC signal A 0 mA signal produces a 0°F reset. A 20 mA signal produces the maximum remote temp reset (program- produces the maximum remote temp reset (program- mable under the SETPOINTS key).
Page 194: Remote Current Limit Reset
VDC, 2 VDC, 0 mA, or 4 mA based on the OPTIONS key setting) causes the current limit to revert back to its Contact a local YORK ISN Representative for details maximum value. on ISN controls and capabilities.
Page 195 FORM 201.21-NM1 (1223) REMOTE CURRENT LIMIT RESET CONTROL (CON'T) 0 – 10 VDC Reset Input A 0 VDC signal sets the current limit to the maximum value. A 10 VDC signal sets the current limit to the minimum value. The current limit is ramped linearly between these limits as the input varies between 0 VDC and 10 VDC.
Page 196: Sound Limit Controls
Sound Limit Setpoint under the PROGRAM key. If these values are exceeded, the minimum or maximum value will be used. Contact a local YORK ISN Representative for details on ISN controls and capabilities. JOHNSON CONTROLS...
Page 197 FORM 201.21-NM1 (1223) SOUND LIMIT CONTROL (CON'T) (LOCAL AND REMOTE RESET CONTROL) 0 – 10 VDC Reset Input A 0 VDC signal produces a 0% sound limit (no change to max VSD freq). A 10 VDC signal produces a 100% sound limit (max VSD freq = min VSD freq).
Page 198: Section 8 - Micropanel
MICRO PANEL FORM 201.21-NM1 (1223) SECTION 8 - MICRO PANEL VSD OPERATION AND CONTROLS VSD Logic Board On start-up, the output frequency from the VSD to the motor(s) will be increased from 0 Hz to the operating The VSD Logic Board communications with the chiller frequency commanded by the Chiller Control Board.
Page 199 FORM 201.21-NM1 (1223) VSD OPERATION AND CONTROLS (CON'T) Modulating Frequency The PMW generator is programmed to essentially oper- The modulating frequency range will range from 0 to ate a linear volts/Hz ratio over the 0 – 200 Hz frequency 200 Hz. The modulating frequency waveform con- range.
Page 200: Vsd Cooling And Cooling Loop
MICRO PANEL FORM 201.21-NM1 (1223) VSD OPERATION AND CONTROLS (CON'T) The glycol coolant level in the VSD cooling system VSD COOLING AND COOLING LOOP should be maintained 9-15 inches (23-38 cm) from the The VSD generates heat in the IGBT power modules top of the fill tube.
Page 201 FORM 201.21-NM1 (1223) VSD OPERATION AND CONTROLS (CON'T) In some cases, the condenser fans may The VSD fan and glycol pump will run if any of the following conditions listed below are true, provided be turned on by the micro, when no the VSD has been powered up for less than 30 seconds compressors are running, to keep the and the pump has not run in the last 30 seconds.
Page 202 MICRO PANEL FORM 201.21-NM1 (1223) VSD OPERATION AND CONTROLS (CON'T) Pre-charge Run Mode / Unit Restart When cooling is required (LCWT>SPHL), leaving In order to initiate a system run, two conditions must chilled liquid temp is greater than the setpoint high be met.
Page 203 FORM 201.21-NM1 (1223) VSD OPERATION AND CONTROLS (CON'T) Current Sensing and Scaling VSD Transmitted Operating parameters Individual current transformers on each leg sense three VSD operating parameters will be transmitted to the phases of output current on each compressor. These sig- Chiller Control Board over the RS-485 communica- nals are buffered, divided by 2, and filtered by an RMS tions link between the 2 boards.
Page 204: Vsd Safeties
MICRO PANEL FORM 201.21-NM1 (1223) VSD SAFETIES (FAULTS) VSD operating conditions are monitored by both soft- micro to capture fault data if the Fault relay fails. Both ware algorithms and hardware circuitry. Both types the system and VSD fault data are then stored in the exist as a result of the need for both extremely fast Chiller Control Board history buffers.
Page 205 FORM 201.21-NM1 (1223) VSD SAFETIES (FAULTS) (CON'T) Pre-charge Low DC Bus Voltage (Software) Fault pressor units. Two key presses of the STATUS key are required to show the fault on both systems. The Status The DC bus voltage must reach at least 50 VDC within display fault message is displayed below: four seconds and 500 VDC within 19 seconds after the X indicates the system and YYYYYYY indicates the...
Page 206 MICRO PANEL FORM 201.21-NM1 (1223) VSD SAFETIES (FAULTS) (CON'T) The fault will be a system 1/3 or 2/4 fault on 4 com- Low DC Bus Voltage (Software) fault pressor units. Two key presses of the STATUS key are The low DC bus voltage trip level is set at 500 VDC. If required to show the fault on both systems.
Page 207: Ibgt Gate Driver (Hardware) Fault
FORM 201.21-NM1 (1223) VSD SAFETIES (FAULTS) (CON'T) Motor Current Overload (Software) Fault IGBT GATE DRIVER (HARDWARE) FAULT The Motor Current Overload will compare the highest The unit’s phase bank assembly(s) contains one IGBT of the 3 phases of motor current per compressor to the gate driver control board per compressor.
Page 208 MICRO PANEL FORM 201.21-NM1 (1223) VSD SAFETIES (FAULTS) (CON'T) On 3 compressor chillers, the baseplate temperatures on High VSD Internal Ambient Temperature compressors 1 and 3 are OR’d together and the high- (Software) Fault est of the two temperatures compared in software to a limit of 232°F.
Page 209: Power Supply (Hardware) Fault
FORM 201.21-NM1 (1223) VSD SAFETIES (FAULTS) (CON'T) POWER SUPPLY (HARDWARE) FAULT VSD Logic Board Failure (Software) Fault Upon receipt of the voltage and frequency commands, Various DC power supplies which power the VSD Logic the PWM generator will acknowledge receipt of the Board are monitored via hardware located on the logic command.
Page 210 MICRO PANEL FORM 201.21-NM1 (1223) VSD SAFETIES (FAULTS) (CON'T) VSD Fault Data Fault Relay/Fault Acknowledge Bit When a fault has occurred, the VSD Logic Board will Control of the Fault Relay is from the VSD Logic Board. capture fault data. This data will be stored in the on- The Fault Relay on the VSD will be closed during a board battery backed RAM for safekeeping and trans- non-fault condition.
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Page 212: Unit Warnings
MICRO PANEL FORM 201.21-NM1 (1223) UNIT WARNINGS If a low battery is detected, it should be replaced as Unit Warning Operation soon as possible. The programmed values will all be Unit warnings are caused when a condition is pres- lost and the unit will be prevented from running on the ent requiring operator intervention to restart the unit.
Page 213 FORM 201.21-NM1 (1223) TP4 +12V TP10 +24V TP5 +15V TP1 GND Port 1 Future Native U26 Port 1 RS-485 Driver +3.3V U18 VSD RS-485 Driver Card VSD RX VSD TX RS-232 to Printer Port 2 U23 Port 2 Port 2 RS-485 Driver RS-485 to U5 RTC/...
Page 214 MICRO PANEL FORM 201.21-NM1 (1223) FLASH CARD UPDATE ERROR XXXXX FLASH CARD J2 VSD#1 and J1 VSD#2 connections headers for RS- UPDATE DEFINITION 485 communications to the Variable Speed Drive(s). ERROR CODE Okay VSD RX and VSD TX LEDs illuminate to indicate the Flash card not found.
Page 215 YORK Product initialized, if no ”Number of Compressors Select” Technical Support or YORK ES Commercial. The ap- jumpers are installed or if more than 1 jumper is in- pearance of this message means an optimized chiller is stalled.
Page 216: Unit Safeties
MICRO PANEL FORM 201.21-NM1 (1223) UNIT SAFETIES If a “VSD” fault occurs during the fault rampdown or Unit Safety Operation while the systems are shut down, the VSD fault will be Unit faults are safeties that cause all running compres- registered as a new fault.
Page 217 FORM 201.21-NM1 (1223) UNIT SAFETIES (CON'T) Chiller Control Board receives a valid response from the Low Leaving Chilled Liquid Temp Fault VSD for a data request. Shown below is an example of The Low Leaving Chilled Liquid Temp Cutout helps to a Comms Failure fault message: protect the chiller from an evaporator freeze-up should UNIT YYYYYYYY...
Page 218: System Safeties
MICRO PANEL FORM 201.21-NM1 (1223) SYSTEM SAFETIES (FAULTS) In some cases, a control panel fault will occur after System Safety (Fault) Operation a VSD fault, possibly during system shutdown or at System safeties are faults that cause individual systems some later time. This is known as an “ALL FAULT” to be shut down if a safety threshold is exceeded for 3 and these faults will be recorded as such under the HIS- seconds.
Page 219 FORM 201.21-NM1 (1223) SYSTEM SAFETIES (FAULTS)(CON'T) sure falls below the ramped cutout point, the system will High Discharge Pressure Cutout shut down with a controlled ramped shutdown. (HPCO)(Hardware) Fault The cutout pressure during operating periods of 30 The mechanical High Pressure Cutout protects the seconds to 210 seconds is ramped and can be calculated system from experiencing dangerously high discharge pressure.
Page 220 MICRO PANEL FORM 201.21-NM1 (1223) SYSTEM SAFETIES (FAULTS) High Differential Oil Pressure Cutout Fault TABLE 13 - LOW DIFFERENTIAL OIL PRESSURE CUTOUT The High Differential Oil Pressure Cutout protects the compressor from low oil flow and insufficient lubrica- AMBIENT TEMPERATURE RAMP tion, possibly from a dirty oil filter.
Page 221 FORM 201.21-NM1 (1223) SYSTEM SAFETIES (FAULTS) (CON'T) The Status display fault message for this safety is shown High Oil Temperature Cutout Fault below: The High Oil Temperature Cutout protects the compres- sor from insufficient lubrication. A system will fault and SYS X YYYYYYYY LOW SUCTION SUPERHEAT shut down with a controlled ramped shutdown when its oil temperature rises above 225°F.
Page 222 MICRO PANEL FORM 201.21-NM1 (1223) SYSTEM SAFETIES (FAULTS) Sensor Failure Cutout Fault TABLE 14 - START INHIBIT SENSOR THRESHOLDS The Sensor Failure Cutout prevents the system from running when a critical sensor (transducer, level sen- HIGH SENSOR sor, or motor winding temp sensor) is not functioning THRESHOLD THRESHOLD properly and reading out of range.
Page 223 FORM 201.21-NM1 (1223) SYSTEM SAFETIES (FAULTS) (CON'T) High Flash Tank Level Cutout Fault The Flash tank level Cutout prevents the system from running when the liquid level in the flash tank is too high. The safety will be ignored for the first 15 seconds of system operation.
Page 224: Status Key
General Status mes- sages, Unit Safeties, and System Safeties. When power is first applied to the control panel, the following message displaying YORK International Corporation, the EPROM version, date, and time will be displayed for 2 seconds, followed by the appropriate...
Page 225 FORM 201.21-NM1 (1223) STATUS KEY (CON'T) Multiple STATUS messages may appear and can be UNIT STATUS viewed by pressing the STATUS key repeatedly to allow VSD COOLING SHUTDOWN scrolling through as many as three STATUS messages, This message indicates the chiller is shutdown, but that could possibly be displayed at any time on a 2 com- running all the condenser fans, VSD glycol pump, and pressor chiller or 4 messages that could be displayed on...
Page 226 MICRO PANEL FORM 201.21-NM1 (1223) STATUS KEY SYS X SHUTTING DOWN SYS X ISN CURRENT LIMITING The compressor shutting down message indicates the The ISN Current Limiting message indicates the motor respective system is ramping down in speed prior to current load limit or motor current unloading is in effect shutting off.
Page 227 FORM 201.21-NM1 (1223) STATUS KEY (CON'T) SYS X REMOTE SOUND LIMITING The Remote sound limiting message indicates the sound load limit is in effect based on the Remote controlled sound limit setpoint. The setpoint may be offset using a remote voltage or current signal. The sound limit option must be activated for this function to operate.
Page 228: Unit Data Key
MICRO PANEL FORM 201.21-NM1 (1223) UNIT DATA KEY UNIT DATA LD10605 GENERAL The UNIT DATA Key provides the user with displays UNIT LOAD TIMER = XXX SEC of unit temperatures, and unit related data. Displays UNLOAD TIMER = XXX SEC can be selected by repeatedly pressing the UNIT DATA The next key press displays the error in temperature key or the▲...
Page 229 FORM 201.21-NM1 (1223) UNIT DATA KEY (CON'T) The next key press displays the status of the evaporator pump and heater, where XXX is either ON or OFF. UNIT EVAP PUMP RUN = XXX EVAP HEATER = XXX The next key press displays the status of Active Remote Control.
Page 230: System Data Key
MICRO PANEL FORM 201.21-NM1 (1223) SYSTEM DATA KEYS 1-4 SYSTEM 1 DATA KEY SYSTEM 2 DATA KEY SYSTEM 3 DATA KEY SYSTEM 4 DATA KEY LD10605 GENERAL The second key press of the SYSTEM DATA Key or the ▼ (DOWN ARROW) key displays all of the measured The data keys provide the user with many displays of system temperatures (oil, suction, and discharge).
Page 231 FORM 201.21-NM1 (1223) SYSTEM DATA KEYS 1-4 (CON'T) If any motor temp sensor is being SYSTEM 2 - 4 DATA Key Operation ignored, (Selectable under Unit Set- These keys function the same as the SYSTEM 1 DATA up Mode), that sensor’s value will be key except that it displays data for system 2 through displayed as XXXXX.
Page 232 MICRO PANEL FORM 201.21-NM1 (1223) SYSTEM DATA KEYS 1-4 Sensor Displays TABLE 15 lists all the sensors attached to the control board associated with system data keys. The minimum and maximum values displayed on the micro display are provided. If values exceed the limits in the table, a < or > sign will be display along with the minimum or maximum value.
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Page 234: Vsd Data Key
MICRO PANEL FORM 201.21-NM1 (1223) VSD DATA KEY DATA KEY LD10605 GENERAL The VSD DATA Key provides the user with displays of VSD COMP 1 = XXX AMPS = XXX %FLA VSD temperatures, voltages, currents, and other operat- COMP 2 = XXX AMPS = XXX %FLA ing data.
Page 235 FORM 201.21-NM1 (1223) VSD DATA KEY (CON'T) The next key press displays the current limit values set The next key press displays the setting of the VSD’s locally on the panel under the PROGRAM key, remotely 105% FLA overload potentiometer for Compressor #1 by an ISN, and remotely by the Current Limit input.
Page 236: Operating Hours & Start Keys
MICRO PANEL FORM 201.21-NM1 (1223) OPERATING HOURS / START COUNTER KEY OPERATING HOURS/ START COUNTER LD10605 Operating Hours/Start Counter Key Operation Compressor operating hours and compressor starts are displayed with a single key press. The maximum value for both hours and starts is 99,999, at which point they will roll over to 0.
Page 237: History Key
FORM 201.21-NM1 (1223) HISTORY KEY HISTORY LD10605 HISTORY Key Operation Normal Shutdowns History The HISTORY key provides the user access to many If the NORMAL SHUTDOWNS History is selected, unit and system operating parameters captured at the the following screen will be displayed: instant a unit or system safety (fault) shutdown occurs.
Page 238 MICRO PANEL FORM 201.21-NM1 (1223) HISTORY KEY Fault Shutdowns History Status Fault Type SYS X COMPRESSOR RUNNING If the FAULT SHUTDOWNS History is selected, the SYS X YYYYYYYY HIGH DIFF OIL PRESSURE following screen will be displayed: This message indicates the type of system fault. This FAULT HIST XX 18-JUN-20004 10:34:58 AM screen is skipped if a UNIT Fault caused the shut- YYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYY...
Page 239: Unit Data
FORM 201.21-NM1 (1223) HISTORY KEY (CON'T) UNIT DATA Status This message indicates the status of the evaporator pump Evaporator Leaving and Return Chilled Liquid UNIT EVAP PUMP RUN = XXX Temps EVAP HEATER = XXX UNIT CHILLED LIQUID LEAVING = XXX.X °F and the evaporator heater at the time of the fault.
Page 240: System Data
MICRO PANEL FORM 201.21-NM1 (1223) HISTORY KEY (CON'T) Precharge Signal Status and VSD Cooling COMP 1 = XXX AMPS = XXX %FLA Status COMP 3 = XXX AMPS = XXX %FLA PRECHARGE SIGNAL = XXX COMP 2 = XXX AMPS = XXX %FLA COMP 4 = XXX AMPS...
Page 241 FORM 201.21-NM1 (1223) HISTORY KEY (CON'T) System # 1 Measured Temperatures System #1 Flash Tank Level and Feed Valve % Open SYS 1 TEMPERATURES OIL = XXX.X °F SUCTION = XXX.X DISCHARGE = XXX.X °F SYS 1 FLASH TANK LEVEL = XXX.X % This message displays all of the measured system FEED VALVE PERCENT OPEN = XXX.X % temperatures (oil, suction, and discharge) at the time...
Page 242: Compressor Operating Hours & Starts
MICRO PANEL FORM 201.21-NM1 (1223) HISTORY KEY (CON'T) System 2 - 4 Data OPTIONS Data for the remaining systems 2 – 4 at the time of the Display Language fault is displayed in the same sequence as the system #1 data. OPTIONS DISPLAY LANGUAGE ◄...
Page 243: Program Values
FORM 201.21-NM1 (1223) HISTORY KEY (CON'T) This message indicates whether remote current reset Remote Temperature Reset was active or disabled at the chiller keypad at the time One of the 5 messages below indicates whether remote of the fault and if active, the type of reset signal selected. temperature reset was active or disabled at the chiller One of the following messages will be indicated: DIS- keypad at the time of the fault.
Page 244 MICRO PANEL FORM 201.21-NM1 (1223) HISTORY KEY (CON'T) Pulldown Current Limit PROGRAM PULLDOWN CURRENT LIMIT = XXX %FLA This message indicates the pulldown current limit pro- grammed at the time of the fault. Pulldown Current Limit Time PROGRAM PULLDOWN CURRENT LIMIT TIME = XXX MIN This message indicates the pulldown current limit time programmed at the time of the fault.
Page 245: Setpoints Key
FORM 201.21-NM1 (1223) SETPOINTS KEY SETPOINTS LD10605 SETPOINTS Key Operation Pressing the SETPOINTS key a second time or the ▼ (ARROW) key will display the leaving chilled liquid Cooling setpoints and ranges may be programmed by control range, default, and low/high limits. pressing the SETPOINTS key.
Page 246 MICRO PANEL FORM 201.21-NM1 (1223) SETPOINTS KEY (CON'T) The values displayed under each of the key presses may be changed by keying in new values and pressing the  (ENTER) key to store the new value into memory. Where more than one value may be keyed in on a dis- play, a portion of the data that does not need updating may be skipped by pressing the ...
Page 247: Program Key
FORM 201.21-NM1 (1223) PROGRAM KEY PROGRAM LD10605 PROGRAM KEY OPERATION Pressing the  (ENTER) key again will display the first programmable selection. Various operating parameters are programmable by the user. These are modified by pressing the PROGRAM Suction Pressure Cutout key and then the ...
Page 248 MICRO PANEL FORM 201.21-NM1 (1223) PROGRAM KEY (CON'T) Low Ambient Cutout Pulldown Current Limit Time PROGRAM ◄DEF XXXXX LO XXXXX HI XXXXX PROGRAM ◄DEF XXXXX LO XXXXX HI XXXXX PULLDOWN CURRENT LIMIT TIME = XXX MIN LOW AMBIENT TEMP CUTOUT = XXX.X °F The low ambient temp cutout allows programming the The pulldown current limit time is programmable.
Page 249 FORM 201.21-NM1 (1223) PROGRAM KEY (CON'T) Sound Limit Setpoint Default Values PROGRAM ◄DEF XXXXX LO XXXXX HI XXXXX A listing of the low limits, high limits, and default values SOUND LIMIT SETPOINT = XXX % for each of the programmable values is noted in each The sound limit setpoint is programmable from 0 –...
Page 250: Options Key
MICRO PANEL FORM 201.21-NM1 (1223) OPTIONS KEY OPTIONS LD10605 OPTIONS Key Operation Chilled Liquid Cooling Mode Selection The OPTIONS key provides the user with a display The Chilled liquid cooling mode can be selected for of unit configuration and the capability to modify the Water Cooling or low temperature Glycol Cooling.
Page 251 FORM 201.21-NM1 (1223) OPTIONS KEY (CON'T) Local / Remote Control Mode Selection System Lead/Lag Control Mode Selection Local or Remote Control Mode allows the user to select The operator may select the type of lead/lag control the chilled liquid temperature control mode. desired.
Page 252 MICRO PANEL FORM 201.21-NM1 (1223) OPTIONS KEY (CON'T) Remote Temperature Reset Selection OPTIONS REMOTE CURRENT LIMIT INPUT ◄ ► 4.0 TO 20.0 MILLIAMPS Remote temperature reset from an external source may The default setting for Remote Current Reset is DIS- be tied directly into the chiller microprocessor board.
Page 253 FORM 201.21-NM1 (1223) This page intentionally left blank. JOHNSON CONTROLS...
Page 254: Date/Time & Schedule Key
MICRO PANEL FORM 201.21-NM1 (1223) DATE / TIME & SCHEDULE KEYS DATE/ TIME SCHEDULE LD10605 DATE/TIME KEY Key Operation CLOCK FRI 18-JUN-2005 10:15:33 AM DAY OF WEEK ◄ ► = XXX When the DATE/TIME Key is pressed, the chiller Pressing the ▼ (DOWN ARROW) key again scrolls to microprocessor will display the date and the time.
Page 255: Schedule Key
FORM 201.21-NM1 (1223) DATE / TIME & SCHEDULE KEYS (CON'T) The month can be selected by keying in the numerical Pressing the ▼ (DOWN ARROW) key again scrolls value to select the day. After the month is selected, the to AM/PM: ...
Page 256: Unit Operating Schedule
MICRO PANEL FORM 201.21-NM1 (1223) DATE / TIME & SCHEDULE KEYS (CON'T) The holiday times may be set using the same procedure UNIT OPERATING SCHEDULE as described above for the days of the week. Be sure to The Unit Operating Schedule is used to enable/disable press the ...
Page 257: Sound Limit Schedule
FORM 201.21-NM1 (1223) Once the schedule for a specific day is programmed and SOUND LIMIT SCHEDULE entered, the schedule for the next day will appear. The The SOUND LIMIT SCHEDULE allows setting the schedule for each day may be programmed the same or day and time when the user desires using the “SILENT differently.
Page 258: Manual Override Key
MICRO PANEL FORM 201.21-NM1 (1223) MANUAL OVERRIDE KEY MANUAL OVERRIDE LD10605 MANUAL OVERRRIDE Key Operation If the MANUAL OVERRIDE key is pressed during a schedule shutdown, the STATUS display will display the message below. This indicates that the Daily Schedule is being ignored and the chiller will start when chilled liquid temperature allows, Remote Contacts, UNIT switch and SYSTEM switches permitting.
Page 259: Print Key
FORM 201.21-NM1 (1223) PRINT KEY PRINT LD10605 PRINT key Operation TABLE 18 - PRINTOUT TYPES The PRINT key is used to initiate a printout of current PRINTOUT TYPES operating data (real time data), a complete history print- Operating Data out of all history (fault) buffers, a printout of all normal (Default Selection) shutdowns (compressor cycling, chiller shutdown, etc.) All History Buffers...
Page 260: Operating Data Printout
PRECHARGE SIGNALS X X X X X X OPERATING DATA PRINTOUT (4 circuit) MOTOR OVERLOADS 1/2 XXX XXX AMPS YORK INTERNATIONAL CORPORATION MOTOR OVERLOADS 3/4 XXX XXX AMPS LATITUDE SCREW CHILLER (3 circuit & 4 circuit) SOFTWARE VERSION C.VSD.XX.00 OPERATING DATA...
Page 261: History Data Printout
THU START=00:00AM STOP=00:00AM FRI START=00:00AM STOP=00:00AM SAT START=00:00AM STOP=00:00AM YORK INTERNATIONAL CORPORATION HOL START=00:00AM STOP=00:00AM LATITUDE SCREW CHILLER SOUND LIMIT SCHEDULE HISTORY NUMBER 1 (This section is printed only if the sound limit 2:04:14 PM...
Page 262: Service Key
MICRO PANEL FORM 201.21-NM1 (1223) SERVICE KEY SERVICE LD10605 SERVICE Key Operation Pressing the (ENTER) key allows “view only” Service  Mode operation. All control board I/O will be view- able in this mode. No outputs can be changed. For The Service Key allows viewing data related to the in- troubleshooting or start-up commissioning purposes, ternal function of the chiller system electronics.
Page 263 FORM 201.21-NM1 (1223) SERVICE KEY (CON'T) The data sections are listed below: If the input is programmed for a current input, the voltage read by the MUX is displayed. If the input is disabled under the OPTIONS key, the voltage display ·...
Page 264 MICRO PANEL FORM 201.21-NM1 (1223) SERVICE KEY (CON'T) SERVICE AI J20-3 SYS3 MOTOR TEMP T3 SERVICE AI J22-22 SYS2 OIL PRESS X.X VDC = XXX.X °F X.X VDC = XXX.X PSIG SERVICE AI J20-6 SYS4 MOTOR TEMP T1 SERVICE AI J22-24 SYS2 DISCHARGE PRESS X.X VDC = XXX.X °F X.X VDC...
Page 265 FORM 201.21-NM1 (1223) SERVICE KEY (CON'T) The third data section displays the Digital Inputs (DI) to SERVICE DI J7-2 CONFIG INPUT 0 the Chiller Control Board that can be viewed from the STATUS = XXX service mode. Displays for systems 3 and 4 are skipped if the systems are not present on the chiller.
Page 266 MICRO PANEL FORM 201.21-NM1 (1223) SERVICE KEY (CON'T) SERVICE DO J10-1 EVAP PUMP RUN SERVICE DO J11-6 SYS 4 SPARE RB1 TB1-20 STATUS = XXX RB1 TB1-10 STATUS = XXX SERVICE DO J10-2 SYS 2/4 VSD RUN SERVICE DO J11-7 SYS 3 SPARE RB1 TB1-18 STATUS = XXX...
Page 267 FORM 201.21-NM1 (1223) SERVICE KEY (CON'T) SERVICE AO J14-1 SYS 3 FEED VALVE OUT XXX.X % = XX.X VDC SERVICE AO J14-2 SYS 3 DRAIN VALVE OUT XXX.X % = XX.X VDC SERVICE AO J14-3 SYS 4 FEED VALVE OUT XXX.X % = XX.X VDC SERVICE AO J14-4...
Page 268: System Switches Key
MICRO PANEL FORM 201.21-NM1 (1223) SYSTEM SWITCHES KEY SYSTEM SWITCHES LD10605 SYSTEM SWITCHES Key Operation ◄ (LEFT ARROW) or ► (RIGHT ARROW) keys allow scrolling through the choices of: The SYSTEM SWITCHES key allows the operator to turn individual systems ON and OFF. Safety lockouts ·...
Page 269: Serial Number Programming
(ENTER) key. Press the ▼(DOWN ARROW) key  to scroll to position 4 and the following message will YORK Product Technical Support will provide a factory appear: password to allow programming the serial number into S/N ENTRY UNIT SERIAL NUMBER POS 4 the chiller.
Page 270 MICRO PANEL FORM 201.21-NM1 (1223) SERIAL NUMBER PROGRAMMING (CON'T) At this point, the letters entered for the YYYY inputs should now appear in the top line of the display and should match the first 4 characters of the serial number on the unit Data Plate.
Page 271: Enabling Optimized High Iplv Mode
High IPLV mode. You will need to provide YORK Product Technical Support or YORK ES Commercial with the Unit Serial Number located on the chiller nameplate. The date and time will also need to be current on the chiller, and will need to be provided to YORK Product Technical Sup- port or YORK ES Commercial.
Page 272: Unit Setup Mode
MICRO PANEL FORM 201.21-NM1 (1223) UNIT SETUP MODE Unit Setup Mode will allow the programming all of the This mode may be entered by pressing the PROGRAM programmable values that the user should never change. key, entering the password 4245, and pressing the These will either be programmed at the factory or by (ENTER) key.
Page 273 FORM 201.21-NM1 (1223) UNIT SETUP MODE (CON'T) SETUP MODE ◄ DEF XXXXX LO XXXXX HI XXXXX SETUP MODE SYS 1 MOTOR SENSOR TO IGNORE COMP 1 STARTS = XXXXX ◄ ► XXXXXXXXXXXXXXXXXXXXXXXXX SETUP MODE ◄ DEF XXXXX LO XXXXX HI XXXXX SETUP MODE SYS 2 MOTOR SENSOR TO IGNORE COMP 2 STARTS = XXXXX...
Page 274: Default Programmable Values
MICRO PANEL FORM 201.21-NM1 (1223) DEFAULT PROGRAMMABLE VALUES To quickly program or reset most of the user program- mable values to their default values, press PROGRAM, 6140, ENTER. The following message will then be displayed, allowing a choice to reset the operating pa- rameters to their default values.
Page 275: Serial Port Connections
FORM 201.21-NM1 (1223) SERIAL PORT CONNECTIONS TABLE 20 lists the serial ports and the circuit board they are located on. The serial communications lines provide communications to external devices outside the chiller and between microprocessors located in the chiller control panel. TABLE 20 - SERIAL PORT CONNECTIONS BOARD HEADER...
Page 276: Analog Input Connections
MICRO PANEL FORM 201.21-NM1 (1223) ANALOG INPUT CONNECTIONS TABLE 21 lists the Analog inputs and the circuit board J12-3 can also be used as common, as well as chassis they are located on. Not all of the sensors are installed in ground, or the common terminal point on the Chiller every unit, as some of them are optional.
Page 277 FORM 201.21-NM1 (1223) ANALOG INPUT CONNECTIONS (CON'T) TABLE 21 - ANALOG INPUT CONNECTIONS (CON'T) BOARD HEADER ANALOG INPUT Chiller Control Board J23-13 Sys 3 Suction Temperature Chiller Control Board J23-3 Sys 3 Oil Temperature Chiller Control Board J23-16 Sys 3 Discharge Temperature Chiller Control Board J23-6 Sys 3 Flash Tank Level Sensor...
Page 278: Digital Input Connections
MICRO PANEL FORM 201.21-NM1 (1223) DIGITAL INTPUT CONNECTIONS TABLE 22 lists the digital inputs and the circuit board J12-3 can also be used as common, as well as chassis they are located on. The Digital input signals are typi- ground, or the common terminal point on the Chiller cally referenced to the common (return, ground) in the Control Board.
Page 279 FORM 201.21-NM1 (1223) DIGITAL INPUT CONNECTIONS (CON'T) TABLE 22 - DIGITAL INTPUT CONNECTIONS (CON'T) BOARD HEADER ANALOG OUTPUT VSD Logic Board J11-2 Phase Loss Fault 1 VSD Logic Board J11-6 Phase Loss Fault 2 VSD Logic Board Test Pushbutton VSD Logic Board J10-5 to J10-6 Comp 1/3 Run (from control panel) VSD Logic Board...
Page 280: Analog Output Connections
MICRO PANEL FORM 201.21-NM1 (1223) ANALOG OUTPUT CONNECTIONS TABLE 23 lists the analog outputs and the circuit board they are located on. The analog output signals are feed to the associated control device from the 2 wires in the associated plug. TABLE 23 - ANALOG OUTPUT CONNECTIONS BOARD HEADER...
Page 281 FORM 201.21-NM1 (1223) This page intentionally left blank. JOHNSON CONTROLS...
Page 282: Digital Output Connections
MICRO PANEL FORM 201.21-NM1 (1223) DIGITAL OUTPUT CONNECTIONS TABLE 24 lists the digital outputs and the plug/termi- The 0-120VAC single digital outputs from the Relay nals of the circuit board they originate from. Not all of Output Boards are referenced to neutral (Wire 2). For the outputs will be used on every unit.
Page 283 FORM 201.21-NM1 (1223) DIGITAL OUTPUT CONNECTIONS (CON'T) TABLE 24 - DIGITAL OUTPUT CONNECTIONS (CON'T) BOARD HEADER ANALOG OUTPUT Chiller Control / Relay Board 3 J11-7 / TB1-8 and 7 Sys 3 SPARE Chiller Control / Relay Board 3 J11-8 / TB1-6 Sys 3 Condenser Fans Output 1 Chiller Control / Relay Board 3 J11-9 / TB1-5...
Page 284: Isn Communications & Transmitted Data
Start / Stop LD10637 History Buffer When an ISN is communicating with a MicroGateway, always follow the guidelines provided in the YORK MicroGateway instruction form for application to the specific chiller model type. ISN communications with a 2 compressor chiller involves only 1 section of feature 54 data.
Page 285 FORM 201.21-NM1 (1223) ISN TRANSMITTED DATA After receiving a valid transmission from an ISN system, If there is no value to be sent to a particular page, a zero the unit will transmit either operational data or history will be sent. TABLE 26 shows the section 1 data values buffer data depending on the “History Buffer Request”...
Page 286 MICRO PANEL FORM 201.21-NM1 (1223) ISN TRANSMITTED DATA (CON'T) TABLE 26 - DXST / ISN TRANSMITTED DATA (UNIT, SYS 1, SYS 2) (CON'T) ISN PAGE CHARACTER TYPE DXST CHILLER DATA (UNIT, Sys , Sys 2) Digital Digital Digital Digital Cooling Type: 0=Water, 1=Glycol Digital Local / Remote Control Mode: 0=Local, 1=Remote Digital...
Page 287 FORM 201.21-NM1 (1223) ISN FAULT AND INHIBIT CODES TABLE 27 contains the fault and inhibit code with The table also classifies each fault/inhibit as a unit or it’s associated meaning to be used for decoding ISN system type and lists which board (Chiller Control Operational and Fault Codes on ISN Pages 57 and 59 Board (panel) or VSD Logic Board) generates the in Table 26.
Page 288 MICRO PANEL FORM 201.21-NM1 (1223) ISN FAULT AND INHIBIT CODES (CON'T) TABLE 27 - FAULT AND INHIBIT CODES (CON'T) CODE TYPE SOURCE FAULT or INHIBIT CODES System Pre-charge Low DC Bus Voltage System Pre-charge DC Bus Voltage Imabalance System High Dc Bus Voltage System Low DC Bus Voltage System...
Page 289 FORM 201.21-NM1 (1223) ISN OPERATIONAL STATUS CODES TABLE 28 contains the operational status code with it’s The table also classifies each status as a unit or system associated meaning to be used for decoding ISN Opera- type and lists which board (Chiller Control Board (panel) tional Codes on Pages 56 and 58 in Table 26.
Page 290: R-134A Conversion Tables
MICRO PANEL FORM 201.21-NM1 (1223) R-134A CONVERSION TABLES The following table can be used for converting R-134A pressures to their equivalent saturated temperatures. TABLE 29 - R-134A PRESSURE TO SATURATED TEMPERATURE CONVERSION PRESSURE DEW POINT PRESSURE DEW POINT PRESSURE DEW POINT (PSIG) TEMP.
Page 291: Maintenance
‘major’ service once a year. It note that the units are not generally user serviceable is recommended that your local YORK Service Center and no attempt should be made to rectify faults or prob- is contacted for recommendations for individual sites.
Page 292: Maintenance Requirements
MAINTENANCE FORM 201.21-NM1 (1223) MAINTENANCE REQUIREMENTS FOR YCAV CHILLERS PROCEDURE WEEKLY QUARTERLY SEMI- ANNUALLY EVERY 5 EVERY * ANNUALLY YEARS HOURS Check Oil Level in Oil Separator Sight Glass Check Liquid Line Sight Glass/ Moisture Indicator Record System Operating Temperatures & Pressures Check Condensor Coils for...
Page 293 FORM 201.21-NM1 (1223) MAINTENANCE REQUIREMENTS FOR YCAV CHILLERS (CON'T) PROCEDURE WEEKLY QUARTERLY SEMI- ANNUALLY EVERY 5 EVERY * ANNUALLY YEARS HOURS **Disconect Power Source and Lock Out. Check tightness of Power Wiring connections. Check Glycol concetration on Low Temp. or other applications where freezing may be a problem.
Page 294: Troubleshooting Guide
MAINTENANCE FORM 201.21-NM1 (1223) TROUBLESHOOTING GUIDE (Always remove power to the chiller and assure the DC bus voltage has bled off) PROBLEM POSSIBLE CAUSE ACTION High Voltage to the Chiller is missing. Supply to the Panel Check 1FU, 2FU, 4FU, 5FU is missing.
Page 295 FORM 201.21-NM1 (1223) TROUBLESHOOTING GUIDE (CON'T) (Always remove power to the chiller and assure the DC bus voltage has bled off) PROBLEM POSSIBLE CAUSE ACTION Coils dirty. Check and clean coils. Coils are damaged. Comb out fins. System Fault: HIGH Check fan fuses.
Page 296: Evacuating A System
MAINTENANCE FORM 201.21-NM1 (1223) TROUBLESHOOTING GUIDE (CON'T) (Always remove power to the chiller and assure the DC bus voltage has bled off) PROBLEM POSSIBLE CAUSE ACTION Ambient temperature is high, normal response from controller Remore or panel limiting is in System Fault: High motor current effect, Normal response.
Page 297: Warranty Policy
FOB point of ship- YORK. ment, such YORK products or components as it finds defective. 3. Equipment has been damaged by freezing because Exclusions: Unless specifically agreed to in the contract...
Page 298: Sensor Input Voltage Table
MAINTENANCE FORM 201.21-NM1 (1223) CHILLED LIQUID AND SUCTION TEMPERATURE SENSOR INPUT VOLTAGE TABLE 30 - TEMPERATURE INPUT VOLTAGE SENSOR (MEASURED SIGNAL TO SHIELD AT THE SENSOR) TEMP. (ºF) VOLTAGE TEMP. (ºF) VOLTAGE TEMP. (ºF) VOLTAGE 16.1 1.52 35.9 2.19 55.6 2.85 16.7 1.54...
Page 299: Outside Air Temp Sensor Input Voltage Table
FORM 201.21-NM1 (1223) OUTSIDE AIR TEMPERATURE SENSOR INPUT VOLTAGE TABLE 31 - OUTSIDE AIR TEMPERATURE INPUT VOLTAGE (MEASURED SIGNAL TO SHIELD AT THE SENSOR) TEMP. (ºF) VOLTAGE TEMP. (ºF) VOLTAGE TEMP. (ºF) VOLTAGE 0.24 0.68 49.8 2.00 93.3 3.31 1.79 0.71 50.7 2.03...
Page 300: Pressure Transducer Output Voltage Table
MAINTENANCE FORM 201.21-NM1 (1223) PRESSURE TRANDUCER OUTPUT VOLTAGE TABLE 32 - PRESSURE TRANSDUCER INPUT VOLTAGE (MEASURED SIGNAL TO RETURN AT THE TRANSDUCER) Suction Pressure Discharge Pressure Discharge Pressure Transducer Transducer Transducer (125 PSIG) (275 PSIG) (275 PSIG) Pressure Voltage Pressure Voltage Pressure Voltage...
Page 301: Motor Temperature Sensor Resistance Table
FORM 201.21-NM1 (1223) MOTOR TEMPERATURE SENSOR RESISTANCE TABLE 33 - MOTOR TEMPERATURE SENSOR RESISTANCE (CHECK AT THE MOTOR) Temp. Rnominal Rtol Rmin Rmax (ºC) (Ohms) (± %) (Ohms) (Ohms) 97,062 5.00 92,209 101,915 77,941 4.60 69,586 76,296 55,391 4.20 52,996 57,643 42,324 3.85...
Page 302: Compressor Motor Overload Settings & Maximum Vsd Frequency
MAINTENANCE FORM 201.21-NM1 (1223) COMPRESSOR MOTOR OVERLOAD & MAX. VSD FREQUENCY TABLE 34 - COMPRESSOR MOTOR OVERLOAD SETTINGS & MAX. VSD FREQUENCY 2 COMP CHILLER MODELS WITH STANDARD (PIN 52 = X) AND ULTRA QUIET (PIN 52 = L) FANS CHILLER MODEL CHILLER NAME- COMPRESSOR 1...
Page 303: Printer Wiring
FORM 201.21-NM1 (1223) PRINTER WIRING A “serial” printer may be connected to the TB1 connec- Data from the chiller is transmitted at 1200 baud. Wir- tor on the Chiller Logic Board for the purposes of log- ing diagrams for cables are shown below: ging data and troubleshooting.
Page 304: Okidata 184
MAINTENANCE FORM 201.21-NM1 (1223) PRINTER WIRING Printer Cables SW1 – off: (-) Low when busy Printer cables should be shielded coaxial, #18AWG, 2 – off: 1200 baud stranded wire cables, not to exceed 50’ in length. On 3 – off: 1200 baud long cable runs or whenever permanent installation is 4 –...
Page 305: Operating Log
FORM 201.21-NM1 (1223) OPERATING LOG SHEET SITE AND CHILLER INFORMATION JOB NAME: START DATE: LOCATION: COMPRESSOR # 1 - MODEL #: COMPRESSOR # 2 - MODEL #: SALES ORDER #: COMPRESSOR # 3 - MODEL #: TECHNICIAN NAME: COMPRESSOR # 4 - MODEL #: CHILLER MODEL #: SERIAL #: SERIAL #:...
Page 306: Currents
MAINTENANCE FORM 201.21-NM1 (1223) UNIT OPERATING TEMPERATURES AND PRESSURES CHILLED LIQUID TEMPERATURES VSD BUS VOLTAGE Entering Temp. = ºF(ºC) Bus 1 = Leaving Temp. = ºF(ºC) Bus 2 = OUTDOOR AMBIENT TEMPERATURES VSD INTERNAL AMBIENT TEMPERATURE OAT = ºF(ºC) Ambient Temp. = ºF(ºC) VSD FREQUENCY VSD COOLING SYSTEM STATUS...
Page 307: System Operating Conditions
FORM 201.21-NM1 (1223) SYSTEM OPERATING CONDITIONS ECONOMIZER SOLENOID STATUS SYSTEM STARTS SYS 1 SYS 2 SYS 3 SYS 4 STARTS Economizer (ON/OFF) SYSTEM 1 FEED/DRAIN VALVE % OPEN SYSTEM 2 SYS 1 SYS 2 SYS 3 SYS 4 SYSTEM 3 Feed Valve SYSTEM 4 Drain Valve...
Page 308: Water System Conditions
MAINTENANCE FORM 201.21-NM1 (1223) WATER SYSTEM CONDITIONS EVAPORATOR FLOW Flow Rate Evap Pressure Drop FT / LBS (Circle One) Glycol Freeze Point ºF (ºC) CONDENSOR CONDITIONS AIR TEMPERATURE Air ON Temperature ºF (ºC) Air OFF Temperature ºF (ºC) NOTES JOHNSON CONTROLS...
Page 309: Recommended Spare Parts
FORM 201.21-NM1 (1223) RECOMMENDED SPARE PARTS DESCRIPTION MODEL NUMBER PART NUMBER YCAV Fan Motor 024-27322-000 (Standard Low Noise) Fan Motor 024-34980-001 (Optional Ultra Low Noise) Fan Blade (Standard Low Noise) 026-35604-000 Fan Blade (Optional Ultra Low Noise) 026-36532-000 Valve, Control See Table 4 025-39688-000 Core, Dehydrator...
Page 310 5000 Renaissance Drive, New Freedom, Pennsylvania USA 17349 1-800-524-1330 Subject to change without notice. Printed in USA Copyright © by Johnson Controls 2023 www.johnsoncontrols.com ALL RIGHTS RESERVED Form 201.21-NM1 (1223) Issue Date: December 19, 2023 Supersedes: 201.21-NM1 (122)

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