428516-YUM-B-0908

Buffer Limitation

The Zone Coordinator holds the last 50 alarms in memory, whereas the System Man- ager keeps the last 150 alarms. When the buffer limit is reached, the newest alarm replaces the oldest alarm. All alarms kept at the Coordinator are also forwarded to the System Manager. If the Coordinator cannot forward the alarms to the System Manager, the last 50 alarms are kept at the Coordinator, then sent within 30 seconds after com- munication between the two devices has been restored.

Alarm Detection

When a new alarm occurs, the Alarm icon on the display turns red and begins to blink. Also, the Alarm LED on the upper right corner of the display turns from green to red. The Alarm icon returns to its normal state and the Alarm LED returns to green after you select the Alarm icon at the System Manager or Coordinator.

You can view alarms by pressing the Alarm icon from the Home screen. The most recent alarms are listed first. After you view the alarms in the system, you can delete them, either one at a time or all alarms at once.

Alarms can be routed to pagers, e-mail accounts, and cell phones via text messaging. See Alarm Destinations on page 18 for details.

Alarm Destinations

The System Manager and Coordinator may send alarms to destinations such as pagers, e-mail accounts, and cellular phones with text messaging systems. By default, the Sys- tem Manager or Coordinator routes any critical alarm to these destinations, but only if you have configured the destinations. An analog telephone line and a System Manager or Zone Controller with an internal modem is required for sending alarms to pagers.

An Ethernet connection is required for sending alarms to e-mail accounts and text messaging systems. A text messaging system is any software application that routes text messages to cellular phones that support the Short Message Service (SMS) proto- col. To increase alarm coverage, you may choose all three alarm destinations on a sin- gle System Manager and Coordinator.

The following is an example of an alarm sent to an alarm destination:

6/5/2008 1:04:28 AM ZC7 On-line 189 Communications Restored - Service

Pagers

The System Manager or Coordinator can send alarms to paging devices. When a criti- cal alarm occurs, the internal modem in the device uses the pager configuration param- eters to establish communication with the paging system. The device passes the alarm to the paging system, then routes it to the pager. The time required for the alarm text to reach the pager depends on several factors, including the speed and reliability of the paging service.

E-mail Accounts

The System Manager or Coordinator can send alarms to e-mail accounts. When a crit- ical alarm occurs, the device constructs a message with an e-mail format, then sends it

18

System Manager/Zone Coordinator User’s Manual

Page 17 Page 19
Page 18
Image 18
York YKSMU2x0-0, YK-ZCU4x0-0, YK-ZCU2x0-0 Alarm Destinations, Buffer Limitation, Alarm Detection, Pagers, Mail Accounts
Page 17 Page 19

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.
Top Page Image Contents