To Next PageTo Next PageWhat to do if important configurations are not programmed correctly in York YCWL0056SE?
If important configurations are not programmed correctly, ensure that the soft start (disabled), refrigerant type (R410A), expansion valve type (thermostatic), and North American feature (enabled) are properly programmed. Failure to do so may result in damage to compressors and other system components.
Overview of YORK YCWL chillers and manual usage instructions.
Covers equipment and materials defects, limitations, and conditions for warranty coverage.
Standards for safety, including ASHRAE, NEC, and OSHA compliance, and personnel responsibility.
Guidelines on proper and improper use of the equipment to prevent injury or damage.
Overview of YORK YCWL water-cooled liquid chillers.
Details on suction-gas cooled hermetic scroll compressors used in the unit.
Description of the two independent refrigerant circuits and their components.
Details of the dual-circuit, direct-expansion evaporator design.
Description of the dual refrigerant circuit water-cooled condenser.
Features of the control center, including display, keypad, and functions.
Precautions for unit delivery and storage conditions to ensure quality.
Procedures for inspecting units upon receiving for transit damage.
Guidelines for site suitability and lifting methods, including weights.
Items to check before placing units in operation.
Site requirements for optimal performance and service access.
Recommendations for installations near noise-sensitive areas.
Requirements for unit foundation and base frame support.
Recommendations for piping to ensure satisfactory operation and avoid damage.
Guidelines for water treatment to maintain heat exchanger performance and prevent damage.
Recommendations for using glycol solutions for freeze protection below 40°F.
Describes types of flanges available for customer or local code requirements.
Recommendations for piping relief valves to the exterior for safety.
Recommendations for safe and satisfactory unit electrical connections.
Connection of flow switch for protection against loss of liquid flow.
Specifies temperature and flow limits for unit operation.
Absolute voltage limits to prevent compressor damage.
Graphical data for evaporator pressure drop based on water flow.
Graphical data for condenser pressure drop based on water flow.
Factors for pressure drop adjustments when using glycol solutions.
Table of physical specifications for different models.
Electrical parameters for single-point power supply, including MCA, fuses, and lugs.
Electrical parameters for dual-point power supply, including MCA, fuses, and lugs.
Wiring diagram for single-point power supply connections.
Wiring diagram for dual-point power supply connections.
General electrical data including micro panel power and voltage ranges.
Explanations of electrical terms, notes, and legends.
Tables for sizing ground wire based on disconnect switch or circuit breaker options.
Initial checks before applying power to the unit.
Steps to follow after applying power for startup checks.
Verification of chilled liquid system installation and flow.
Checking flow switch installation and wiring for safety.
Ensuring proper installation and coating of leaving liquid temperature sensor.
Description of the chiller's operating sequence and compressor staging.
Overview of the microprocessor control center and its components.
Description of the controller and I/O board functions.
Details of the 40-character Liquid Crystal Display.
Functionality of the 12-button non-tactile keypad.
Purpose and function of the Real Time Clock battery backup.
Role of the transformer in supplying power to the control center.
Configuration for single/dual systems and compressor programming.
Explanation of status messages displayed on the control panel.
Displays current chiller operating status messages.
Messages indicating system status, cooling demand, or faults.
Displays when safety thresholds are exceeded, causing system shutdown.
Faults that cause individual systems to shut down.
Faults that cause all running compressors to shut down.
How to use keys to retrieve and print system data.
Accessing and scrolling through unit operating parameters.
Accessing and interpreting safety shutdown history.
Using keys for viewing and changing programmed values.
Navigating and programming cooling setpoints and ranges.
Procedures for setting cooling setpoints and ranges.
Regulating leaving chilled liquid temperature based on setpoint and range.
Staging compressors based on return chilled liquid temperature.
Displaying remote setpoint and cooling range for unit control.
Programming a seven-day daily schedule and holiday settings.
Changing programmable operating parameters.
Programming trip voltages for high current protection.
Programming trip voltages for unit high current protection.
Navigating and selecting programmable options.
Setting the display language for the control interface.
Selecting between water or glycol for chilled liquid cooling.
Selecting local or remote control mode for the chiller.
Configuring automatic or manual lead/lag for systems.
Selecting current sensing method (None, One Per Unit, One Per System).
Procedure for updating chiller operating program via flash card.
Setting and displaying current day, time, and date for scheduling.
Initiation of chiller start sequence and capacity control functions.
Controls to prevent reaching low-pressure cutout by limiting loading.
Controls to unload system before reaching high-pressure safety limits.
Regulating leaving chilled liquid temperature based on setpoint and range.
Example illustrating staging based on leaving water temperature.
Temporary setpoint adjustment to reduce compressor cycling.
Strategies for lead/lag and sequencing compressors to equalize run hours.
Staging compressors to match cooling load based on return liquid temperature.
Timer to prevent short cycling and ensure compressor heat dissipation.
Timer to prevent simultaneous starts and excessively high starting current.
Control of evaporator and hydro kit pumps based on various conditions.
Control of the evaporator heater based on ambient air temperature.
Process for pumping down the system upon shutdown.
Feature to prevent loading beyond desired value by limiting compressor operation.
Procedure to clear history buffers, with a caution note.
Steps to enter service mode and manage outputs, configuration, and inputs/outputs.
Viewing and modifying digital outputs in service mode.
Programming chiller configuration parameters like refrigerant type and valve type.
Viewing analog and digital inputs to the microboard.
Procedures for checking digital inputs and analog temperature/pressure inputs.
Checking ON/OFF status of digital inputs connected to the I/O board.
Checking analog inputs representing varying temperatures.
Checking analog inputs representing varying pressures.
Diagram showing connections and components on the microboard.
Table of common problems, causes, and solutions.
Procedures for checking oil level and performing oil analysis for compressor health.
Importance of checking system operating temperatures and pressures.
Function of the Real Time Clock chip and battery backup.
Periodic inspections for proper equipment operation and anomaly detection.
Reading and modifying chiller data via serial communication protocols.
Reading and modifying analog data points for BACnet/Modbus.
Reading and modifying binary data points for BACnet/Modbus.
Reading analog data points that cannot be modified.
Reading binary data points that cannot be modified.
Notes regarding BACnet and Modbus communication data maps.
Procedures for receiving control data and transmitting operational/history data.
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