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General| Model | YLAA0125HE |
|---|---|
| Category | Chiller |
| Cooling Capacity | 125 tons |
| Refrigerant | R-410A |
| Compressor Type | Scroll |
| Voltage | 460V |
| Phase | 3 |
| Efficiency | High efficiency |
Outlines primary responsibilities for personal and machinery safety during operation.
Warns about hazards associated with refrigerant pressure and access to system components.
Details Johnson Controls warranty terms, conditions, limitations, and procedures for claims.
Covers grounding, power isolation, and safety precautions for electrical work.
Covers safety standards, quality accreditations, and compliance with industry codes.
Details limitations on equipment application, structural support, and general access hazards.
Details the microprocessor control center, display, keypad, and programming features.
Provides instructions and warnings for rigging and lifting the chiller unit.
Explains safe procedures for moving the chiller, including lifting methods.
Guides on selecting installation location and required clearances.
Covers field wiring requirements, including power wiring and control wiring.
Lists essential checks to be completed before placing units into operation.
Outlines operational limitations including temperature and voltage constraints.
Provides physical dimensions, weights, and component data for various models.
Specifications for seismic isolators, including ratings, deflection, and color codes.
Specifications for SLRS seismic isolators, including weight ranges and model numbers.
Basic checks before powering on, including inspection, refrigerant charge, and valve status.
Procedure for powering on the unit, checking settings, heaters, and water system.
Instructions for performing leak checks on compressors, fittings, and piping.
Overview of the microprocessor control center and its basic components.
Explains how to check chiller operating status and interpret displayed messages.
Details unit safeties that cause all compressors to shut down.
Explains how to obtain a printout of current system operating parameters.
Describes accessing unit/system safety shutdown parameters from history buffers.
Details return chilled liquid control and its setpoint programming.
Explains how to obtain a printout of the last 9 safety shutdowns.
Explains local and remote control modes for monitoring and chiller control.
Instructions for programming the seven-day daily and holiday schedules.
Confirms the unit type must be 'LIQUID CHILLER' to prevent damage.
Explains manual and automatic lead/lag selection for two-system chillers.
Instructions for programming cooling setpoints and ranges for different modes.
Guide to user-programmable options via the OPTIONS key.
Details the start sequence, flow switch requirements, and temperature control evaluation.
Describes how the microprocessor temporarily adjusts setpoint to avoid compressor cycling.
Explains anticipatory controls to prevent low-pressure cutouts.
Explains Lead/Lag options for equalizing system run hours and compressor sequencing.
Describes controls to unload the system before reaching high-pressure limits.
Explains setpoint programming for controlling leaving chilled liquid temperature.
Details the programmable anti-recycle timer to prevent short cycling.
Details chiller configuration settings like data logging and refrigerant type.
Explains how to enter and navigate the Service Mode for configuration.
Describes how to view analog and digital inputs to the microboard.
General disclaimer regarding warranty and maintenance responsibilities.
Maintenance procedures for compressors, including oil level and analysis.
Details data readability and modifiability via BACnet/Modbus registers.
