428516-YUM-B-0908

over the active Internet connection to the Simple Mail Transfer Protocol (SMTP) server using the configured e-mail destination parameters. The SMTP server passes the message into the e-mail account specified. The time required for the alarm text to reach an e-mail Inbox depends on several factors, which include the speed and avail- ability of the e-mail server.

Text Messages

The System Manager or Coordinator can send alarms to cellular phones that use the SMS protocol. When a critical alarm occurs, the device constructs a message with an SMS format, then sends it over the active Internet connection to the SMS server using the configured text message destination parameters. The SMS server sends the mes- sage to the subscriber’s cellular phone account. The time required for the alarm text to reach a cellular phone depends on several factors, including the speed and availability of the service provider.

Zones, Groups, and Members

A Zone is an area of the building where temperature is under the control of a single Zone Controller. A small office, classroom, warehouse, or gymnasium can be consid- ered one zone.

A Group is a collection of zones that operate on the same schedule or temporary occu- pancy state. Each group can support up to 24 zones for COB RTU systems or 32 zones for VAV RTU systems. Each Coordinator can control up to 4 groups.

Lastly, a Member is something you can schedule, which can be a Group, CV RTU, or IOM output point. The Member List is the screen that shows the currently defined members.

Event Scheduling

You can define up to 24 event schedules at the System Manager and up to 4 event schedules on the Zone Coordinator, if the Zone Coordinator is not reporting to a Sys- tem Manager. Each schedule consists of a unique schedule name and a pair of two occupied times and two unoccupied times for each day of the week. Each schedule also has one or more members. A member is something that can be scheduled.

The last commanded state by a schedule for a particular day rolls over into the next day (that is, remains the same) until the next commanded state for the new day occurs. If the Coordinator reports to a System Manager, the Coordinator scheduling is not used. In this case, the System Manager defines and executes all Coordinator schedules.

Temporary Occupancy Override

Temporary Occupancy Override allows you to force a group of zones into a temporar- ily occupied state for a period of time, called the time-out delay. You can do this from the Zone Details screen or by pushing the temporary occupancy button on the thermo- stat. This action causes the zone, and all other zones in the same Group, to become temporarily occupied together. The system ignores all occupancy schedules for these zones during the time-out period. Once the time-out delay expires, the zones return to their normal occupancy schedule.

System Manager/Zone Coordinator User’s Manual

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York YK-ZCU4x0-0, YKSMU2x0-0 Zones, Groups, and Members, Event Scheduling, Text Messages, Temporary Occupancy Override
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YK-ZCU2x0-0, YKSMU2x0-0, YK-ZCU4x0-0 specifications

York YK chillers are known for their reliability, efficiency, and advanced technology, making them a popular choice for a wide range of commercial applications. Among the various models, the YK-ZCU4x0-0, YKSMU2x0-0, and YK-ZCU2x0-0 stand out for their innovative features and performance capabilities.

The YK-ZCU4x0-0 is designed to offer maximum cooling capacity while maintaining energy efficiency. One of its main features is the variable speed drive technology, which allows for precise control of the compressor speed based on real-time cooling demands. This technology not only enhances energy savings but also reduces wear and tear on components, extending the unit's lifespan. Additionally, the YK-ZCU4x0-0 is equipped with advanced microchannel heat exchanger technology, enabling better heat transfer and smaller refrigerant charges, which contributes to its lower environmental impact.

The YKSMU2x0-0 model is particularly notable for its integrated controls and monitoring systems. This chiller comes with a user-friendly touch screen interface that allows operators to monitor performance metrics and make adjustments with ease. The model features an intelligent control system that optimizes operational efficiency by adapting to changing load conditions. Moreover, its robust design makes it suitable for diverse applications, from data centers to manufacturing facilities, where reliability is crucial.

Finally, the YK-ZCU2x0-0 emphasizes modular design, which allows for easy installation and scalability. Its compact footprint makes it suitable for spaces with limited installation area. This model also supports modular redundancy, ensuring that if one module experiences issues, others can take over without disruption to the cooling process. The combination of high-efficiency performance, modularity, and state-of-the-art features makes the YK-ZCU2x0-0 an attractive option for facility managers looking for dependable chillers.

In summary, the York YK-ZCU4x0-0, YKSMU2x0-0, and YK-ZCU2x0-0 chillers represent the forefront of cooling technology, offering advanced features that cater to energy efficiency, flexibility, and operational reliability. Whether needing a robust solution for cooling large industrial spaces or a more compact unit for specific applications, these models provide the versatility and performance required in today's demanding environments.
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