York YCWS manual Microcomputer Control Center, Power Panel

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Guide Specifications - Cont.

each unit. All piping will be ACR copper with brazed joints. The liquid line will include: a shutoff valve with charging port; sightglass with moisture indicator; thermal expan- sion valve; solenoid valve; and high-absorption remov- able-core filter drier. The entire suction line and the liq- uid line between the expansion valve and the cooler will be insulated with flexible, closed-cell, foam insulation.

MICROCOMPUTER CONTROL CENTER

Each unit shall contain a Microcomputer Control Center. All logic and controls shall be contained within a IP 32 (NEMA 1) cabinet with hinged outer door with positive acting latches. Inside shall be contained the “user friendly” and interactive inputs and outputs as follows: LCD display with light emitting diode back lighting for easy viewing of data and input buttons for DISPLAY (tem- peratures, pressure, etc.). ENTRY (enter/cancel inputs, advance day, change AM/PM), SETPOINTS (change), CLOCK (set time and schedule), PRINT (calling up op- erating and shutdown data), PROGRAM (change inputs from special conditions such as brine chilling) and UNIT ON/OFF.

The Microcomputer Control Center shall be capable of displaying the following: return and leaving liquid tem- perature; return and leaving condenser water tempera- ture (optional); low leaving liquid temperature cutout set- ting; system 1 and 2 percent full-load motor current and suction, discharge (optional) and oil differential pressures; liquid pulldown control range (selectable for 0.6°C to 1.1° C [1°F to 2°F] in one-tenth increments above the set- point); liquid pull-down rate sensitivity (0.3°C to 3.0°C [0.5°F to 5°F]/minute in 0.05°C [0.1°F] increments); anti-

recycle timer status; compressor run status; no cooling load condition; day; date; time; out of range message; daily and holiday scheduling of start/stop times; auto- matic or manual lead/lag status; lead compressor defini- tion; number of compressor starts and running hours; status of hot gas bypass valves (option), liquid line sole- noid valves, and water pump; last three fault shutdowns data; number of unloading steps; compressor load and unload timer status.

The operating program shall be stored in nonvolatile memory (EPROM) to eliminate chiller failure due to AC power failure/battery discharge. Programmed setpoints are retained in lithium battery – backed RTC memory for 5 years minimum.

Provisions shall be included for: pumpdown at shutdown and recycling pumpdown; a hard copy printout from a printer (by others) via an RS-232 electrical output; two steps of demand load limiting and remote chilled liquid reset from an external building automation system; unit alarm contacts; chilled water pump or remote air-cooled condenser control; or Remote Control with printout ca- pability (up to 2000 feet) via an RS-485 electrical output.

POWER PANEL

The power panel shall contain the compressor power terminals. U.L. recognized compressor motor starting contactors which meet l.E.C. requirements, current trans- former sensing for each compressor power source, for protection against under current, over current, imbal- anced current, single phasing compressor stall and voltage spikes.

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YORK INTERNATIONAL

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Contents Ycws Nomenclature Introduction York Ycws Water Cooled Screw ChillersSpecifications Microprocessor Controls Program Accessories & Options Electrical Options Multiple Point Power Supply ConnectionDesign Parameters YcwsTEV Pressure Drops Cooler Water Pressure Drop Curves EnglishCooler Water Pressure Drop Curves SI Selection Data Guide to SelectionSelection Rules Cond Fouling FactorsSolution Sample SelectionLeaving Condenser Water Temperature F Ratings R-22 EnglishYCWS0200SC Leaving Condenser Water Temperature C Ratings R-22 SIYCWS0200SC Ratings- Brine 30 % Ethylene Glycol R-22 English 85.0 Ratings- Brine 30 % Ethylene Glycol R-22 SI 30.0 Ratings- Brine 30 % Propylene Glycol R-22 English YCWS0200SC Ratings- Brine 30 % Propylene Glycol R-22 SI YCWS0200SC Part Load Ratings COP Physical Data EnglishIsolator Selection Data ModelIsolator Details Isolator Details EnglishIsolator Mounting Bracket Sound Data Dimensions English Dimensions Mounting Dimensions mm REF no Electrical Data System #1 Chiller VoltMIN NF MAX Dual Code CIR Disc SW Fuse RLA Model LRASystem #2 Chiller Volt Single Point Power Supply see & 11 , page 30 Incoming Wire Range Selections Single Point Power SupplyMultipoint Wiring System #1 Multipoint Wiring System #2 Customer Wiring Data Multipoint Power Supply Connection Standard UnitVoltage Code Typical Control Panel Wiring Form 201.24-EG1 Application Data Guide Specifications CompressorsCapacity Control System Refrigerant CircuitsPower Panel Microcomputer Control CenterForm 201.24-EG1 York International Form 201.24-EG1 Form 201.24-EG1 RPC 3M 701 New Release Codes DXS, ET

YCWS specifications

York YCWS, or York Chilled Water System, represents a revolutionary approach to modern commercial cooling solutions, offering efficiency, reliability, and sustainability. Designed specifically for large-scale applications such as industrial facilities, data centers, and office buildings, the York YCWS aims to optimize energy use while maintaining climatic comfort indoors.

One of the standout features of the York YCWS is its advanced chiller technology. Utilizing cutting-edge centrifugal chillers, the system maximizes cooling through a combination of high efficiency and low operational costs. These chillers operate with variable speed drives, allowing them to adjust their output based on the real-time cooling demand. This leads to significant energy savings, especially in fluctuating load conditions, and reduces wear on the equipment, extending its lifespan.

The YCWS also incorporates smart control systems that enhance its overall performance. These controls employ algorithms to anticipate system demands, dynamically balancing the load across multiple chillers and optimizing energy use throughout the day. Integration with building management systems (BMS) allows for seamless communication and remote monitoring, giving facility managers greater oversight and control over their cooling operations.

Sustainability is at the core of the York YCWS design. The system uses environmentally friendly refrigerants that comply with global standards for reducing greenhouse gas emissions. Additionally, the modular design of the chiller units allows for easy upgrades and expansions, accommodating growing cooling needs without necessitating a complete system overhaul. This flexibility supports a more energy-efficient and environmentally responsible operational model.

The system's footprint is relatively compact, allowing it to fit into tighter spaces typically found in urban settings. Furthermore, the YCWS is engineered for quiet operation, minimizing noise disturbances for occupants in and around the building.

Reliability is another key characteristic of the York YCWS. With a focus on durability and performance, these systems are built to function optimally in various environmental conditions. The robust construction and high-quality materials ensure long-term service, reducing the need for frequent maintenance and associated costs.

In summary, the York YCWS is not just a cooling solution but a comprehensive system that embodies modern engineering principles. Its efficiency, sustainability, and adaptability make it a preferred choice for industries looking to invest in their future. With its smart technologies and robust features, the York Chilled Water System is well-equipped to meet the demanding needs of today's commercial cooling challenges.