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General| Brand | Johnson Controls |
|---|---|
| Model | YORK Tempo YLAA0135SE |
| Category | Chiller |
| Language | English |
Covers safety standards and quality compliance for YLAA chillers, including relevant industry codes and certifications.
Depicts the P&ID showing system components, flow, and control instrumentation.
Lists essential checks to be performed before placing the chiller units into operation, covering piping and system integrity.
Details the process for inspecting the unit for shipping damage immediately upon receipt and reporting procedures.
Covers field wiring requirements, including power wiring standards, control wiring, and specific contact terminal functions.
Outlines absolute voltage limitations and operational constraints, including temperatures and flows, to prevent compressor damage.
Details electrical specifications, including power supply, MCA, overcurrent protection, and wiring lug sizes.
Explains electrical notes, including minimum circuit ampacity, disconnect switch requirements, fuse sizes, and grounding.
Introduces wiring diagrams, presenting elementary, connection, and power supply diagrams for system components.
Explains the nomenclature system for identifying specific chiller models, including capacity, design, and refrigerant type.
Depicts the P&ID showing system components, flow, and control instrumentation.
Covers essential pre-power checks, including inspection, refrigerant charge verification, valve status, and component checks.
Details checks to perform after applying power, including switch settings, compressor heater verification, water system checks, and flow switch setup.
Provides a comprehensive checklist for pre-startup and startup procedures, covering unit checks, panel checks, and compressor heater verification.
Explains how to calculate and adjust subcooling, and check superheat for system optimization and proper operation.
Details the process for leak checking compressors, fittings, and piping to ensure system integrity before operation.
Introduces the microprocessor-based control center, outlining its components: IPU II, I/O Boards, Transformer, Display, and Keypad.
Introduces the status key and its function for displaying chiller operating status, including general, fault, and safety messages.
Covers unit safeties that cause all running compressors to shut down, including low ambient, low liquid temp, and under-voltage conditions.
Describes the SETPOINTS keys for accessing and programming cooling setpoints, schedules, and program parameters.
Explains how to program the Cooling Setpoint and Range for both leaving and return chilled liquid control modes.
Explains how to use the PROGRAM key to access and change programmable setpoints like pressure cutouts and timers.
Sets the unit type to "Liquid Chiller" and warns against operating in other modes to prevent component damage.
Sets the refrigerant type to R-410A, primarily programmable in Service Mode, ensuring correct system operation.
Explains how the chiller initiates start sequences and matches cooling load using compressor staging and unloading.
Details suction pressure limit controls that prevent low-pressure cutouts by inhibiting compressor loading.
Explains discharge pressure limit controls that unload the system before reaching safety limits due to high load or dirty coils.
Describes how the chiller controls leaving chilled liquid temperature based on setpoint, cooling range, and compressor staging.
Details Lead/Lag operation for balancing system run hours and compressor sequencing for efficient operation and lubrication.
Explains return chilled liquid control for dual system units, focusing on compressor staging based on return water temperature.
Explains the load limiting feature to prevent the unit from exceeding desired loading values, detailing stages and methods.
Describes how to enter and navigate Service Mode for accessing outputs, configuration parameters, and input values.
Explains how to program chiller configuration parameters like soft start, refrigerant type, and expansion valve type for correct operation.
Describes how to view analog and digital inputs to the microboard, including pressure, temperature, and switch status.
Guides users on how to check digital inputs, analog inputs for temperature (including outside air sensor), and pressure sensors.
Provides a troubleshooting guide for common problems, covering issues like no display, flow switch faults, suction pressure faults, and discharge pressure faults.
Emphasizes the importance of proper maintenance during the warranty period and covers only chiller unit components.
Details maintenance procedures for compressors, including oil level checks and oil analysis, with warnings about refrigerant pumping.
Explains how to read and modify data using serial communication protocols, detailing parameter settings and modification procedures.
