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Capstone Turbine Corporation • 21211 Nordhoff Street • Chatsworth • CA 91311 • USA Application Guide: Model C60 Integrated CHP The C60 ICHP System is designed to protect itself from excessive temperatures and pressures. However, it is the responsibility of the person(s) designing and installing the system to assure that resulting temperatures and pressures do not cause a safety hazard or damage other equipment. Several points should always be considered: 1. As a general precaution, the Over Temperature limits for each C60 ICHP System should be set to cause shutdown of the system when outlet water temperatures go above the safety and/or equipment damage levels for the specific application. Refer to the C60 ICHP System Technical Reference (410043) for setting these Over Temperature limits. 2. Temperatures should be monitored at points in the water circuit where excessive temperature may cause a safety hazard or damage equipment. Consideration should be given to automatically adjust power output, or even shut down the associated C60 ICHP Systems, if safe operating limits are exceeded. 3. For any MultiPac application where the Master is providing the temperature feedback signal, care should be taken to assure that this temperature signal is proper for the hot water output of all other C60 ICHP systems that are MultiPac-enabled under all possible operating scenarios. For example, if the water circuit for one of the Local C60 ICHP Systems is different than the water circuit for the Master, temperature feedback signals from the Master could result in continued heat addition from the Local C60 ICHP System that could result in safety and/or equipment damage issues. For water circuits that have taken this into account during normal intended operation, the potential for a water circuit to be inadvertently put into an unsafe condition must be considered (such as from valve and/or water pump failure or manual adjustment of valves or pumps). 4. For any MultiPac application where the Master is providing either the temperature feedback signal or the temperature setpoint for the entire MultiPac, the consequences of failure of the Master must be considered. The Capstone MultiPac logic is set up to control operation of the Local C60 ICHP units. Note that in Electric Priority mode, the Local C60 ICHP units will continue to provide hot water output at the last setpoint issued from the Master, which may provide more hot water than required. Means to avoid this situation must be included in the total system control scheme, such as by interlocking the Master with the Local units to cause them to shut down in the case of a failure of the Master. The following table describes the impact on local MultiPac-enabled units if the MultiPac Master fails: WARNING Excessive water temperatures may result in personal injury and/or equipment damage. Follow good engineering practice in the design and installation of any hot water circuit, and consider the unique operating characteristics of the Capstone C60 Integrated CHP System as noted below. CHP Mode GC SA Thermal Priority X Electric Priority X X Thermal Bypass X X 480007-001 Rev D (June 2005) Impact on Local MultiPac-enabled Units if Master Fails Local units will shut down Local units will continue operating at the last commanded setpoint Local units will continue operating Page 6 of 21 This information is proprietary to Capstone Turbine Corporation. Neither this document nor the information contained herein shall be copied, disclosed to others, or used for any purposes other than the specific purpose for which this document was delivered. Capstone reserves the right to change or modify without notice, the design, the equipment ratings, and/or the contents of this document without incurring any obligation either with respect to equipment previously sold or in the process of construction.PDF Image | Application Guide - Model C60 Integrated CHP (ICHP)
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