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Capstone Turbine Corporation • 21211 Nordhoff Street • Chatsworth • CA 91311 • USA Application Guide: Model C60 Integrated CHP 8. Thermostat – The system may also include a thermally activated switch to indicate over temperature of the heat exchanger core. If the temperature limit is reached, the switch contact will open, causing the CHP Control Board to signal a fault condition and shut down the MicroTurbine. 9. Optional Shutoff Valve and Pressure Sensor (External) – The CHP Control Board will accept a digital input from a pressure switch, and provide a 0.5A, 24Vdc output signal to control a shutoff valve. The terminals on the CHP Control Board have a jumper installed at the factory. Opening this jumper connection will cause a fault condition and shut down the MicroTurbine. To use the external pressure switch input, the jumper must be removed and pressure switch wired as a normally closed contact. 10. UCB Analog Inputs (not shown) – Terminal J14 in the UCB provides for analog control and measurement inputs. Three 0 to 5Vdc (4 to 20mA) inputs are provided. These can be defined during commissioning to represent electric power output control, external water temperature measurement (for thermal control), and water flow measurement. 11. UCB Control Output (not shown) – One of the six UCB digital output relay contacts can be used as control output for turning a water pump on and off. The 5Vdc output becomes active at lightoff (exhaust gas detected), and inactive at shutdown (no exhaust gas detected). This output will become inactive immediately in case of an E-stop command to the system. 12. Heat Recovery Unit Drain (not shown) – A drain connection is provided to allow excess moisture from condensation during start/stop sequences or small water leaks in the heat exchanger core or associated connections. The drain is capable of water flow rates of 0.13 l/s (2 gpm), and should be piped to a suitable building drain location. NOTE: Refer to C60 Integrated CHP System Technical Reference (410043) for more details. Pressure Switch (low pressure = open) Optional Shutoff and Pressure Sensor for Potable Water .5A 24Vdc Water Supply Inlet Water Supply Outlet Flow Switch (no flow = open) Water outlet Temp (RTD) Figure 1 - Heat Recovery Module Water Inlet Temp (RTD) Exhaust out Heat exchanger Diverter Bypass Control Thermostat (overtemp = open) Safety Relief Valve Intra Harness (inside microturbine) Exhaust integral limit switches) In Linear Actuator (with 480007-001 Rev D (June 2005) Page 8 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. Control BoardPDF Image | Application Guide - Model C60 Integrated CHP (ICHP)
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