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Capstone Turbine Corporation • 21211 Nordhoff Street • Chatsworth • CA 91311 • USA Technical Reference: Capstone MicroTurbine Installation and Permitting Guidelines The pressure regulator in the Capstone high-pressure external fuel kit must have at least 103 kPa (15 psig) pressure drop across it in order to hold a steady pressure as the upstream pressure fluctuates. This requirement is higher for low Btu systems at higher pressures. Check with the manufacturer and follow their guidelines. This requirement in turn dictates the compressor design point. Liquid knockout tanks upstream of the compressor may not have enough pressure to automatically purge through a float valve. A pump may be required to remove condensate. Biogas systems and other applications with wet gas should provide a gas/liquid separator immediately downstream of the compressor, and a refrigerated dryer/chiller to meet the Capstone fuel dew point specification: “Water vapor content must be at a minimum of 10oC (18oF) above its dew point anywhere within the fuel connections and the system between the Capstone Microturbine fuel inlet and the fuel manifold block” (410002) The use of existing pipe in a building is sometimes permitted, but it may be necessary to perform pressurized leak checks that use pressures that are higher than the normal service pressure. Beware of maximum line pressures allowed within buildings per Plumbing Codes. Copper and brass pipe or fittings must not be used if the gas contains a particular level of H2S. See local Plumbing and Fuel Gas codes for allowable level. PVC fuel lines may not be allowed depending on local codes and fuel type. When using black pipe it is best to paint the pipe after the installation is complete to reduce corrosion and stains on the surrounding surfaces. Also,ifblackpipeisusedforbiogasinstallationsadditionalparticulatefiltrationwillbe required upstream of the compressors and/or refrigerated dryer. Flexible fuel lines may have code restrictions on length, location of service, protection, pressure, fuel type, end fitting type and material. Fuel service to MicroTurbine location may come underground, above ground, supported from ceiling, or attached to wall, per local codes, but note the following: o The depth that pipes must be buried changes based on whether the pipe is under a building, parking lot or concrete of different thicknesses. o Where wet gas exists, a drip trap shall be provided at any point in the line of pipe where condensate could collect. Drips must be provided with ready access to permit cleaning or emptying. For example, do not bury a gas line that contains wet gas. It will condense liquids in the cool earth and draining is difficult. o Slope fuel lines such that condensate will drain into a serviceable vessel or area, note local codes for disposal. o Adequate support and protection must be provided for all piping, per local codes. o Ensure that piping supplying the unit is well protected from foot traffic or equipment. 410034-001 Rev D (October2004) Page 9 of 18 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 product specifications, and/or the contents of this document without incurring any obligation either with respecttoequipmentpreviouslysoldorintheprocessofconstruction. PleasenotethatCapstoneisonlyresponsiblefortheMicroturbineandotherCapstoneproductsitsells,asprovidedforinCapstone’sProduct Specifications and warranties. Information provided in this document that relates to the system, as opposed to the Microturbine or other Capstone products, is not an indication that Capstone is taking responsibility for the systeminanywayandisprovidedonlyasgeneralguidance. CalculationsandtestingmustbeperformedtoverifythatdesignsolutionscomplywithalloftherequirementsofCapstone'sProductSpecification. All informationcontainedinthisdocumentisprovidedonan“asis”basis,anddoesnotaffectorchangeCapstone'sProductSpecificationsorwarranties. InnoeventwillCapstonebeliablefordamagesarisingdirectlyor indirectly from any use of the information contained in this document.PDF Image | TECH REF Installation and Permitting
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