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1 OF 1 <br />GAS SUPPLY CHECK LIST <br />Part No. 10000002132 <br />Rev. C 11/15/19 <br />Generac Power Systems, Inc. | P.O. Box 8 | Waukesha, WI 53187 <br />P: (262) 544-4811 © 2019 Generac Power Systems, Inc. All rights reserved. All specifications are subject to change without notice.INSTALLATION•Gas Service Meter and Serving Utility <br />■Available on site and reliable <br />■Rated for the combined loading of the facility and the generator (total BTU) <br />■Maintains generator minimum pressure requirements while under maximum loading <br />•Step Down Pressure Regulators <br />■Selected for the pressure and flow needs of the generator <br />■Direct acting type with good dynamic response (no significant time lags in regulation) <br />■Selected for minimum no-load to full load pressure droop (< 1-2” w.c desired) <br />■Located near the generator (allows the long piping runs to be at higher pressure) <br />■Located at least 10’ away from generator connection (avoids regulator oscillations) <br />■Dedicated to a single generator (increases system reliability) <br />•Piping <br />■Sized large enough to minimize pressure drops to acceptable levels under full gas flow <br />■Minimize the number of elbows to avoid unwanted pressure drops <br />■Ensure entire gas supply system maintains acceptable generator pressure under full gas flow conditions <br />■Should be connected to generator with a flexible connection <br />■Should include a drip leg (sediment trap) <br />•LP <br />■LP tank’s boil off rate (BTU capacity) needs to support rated BTU at minimum ambient <br />■LP liquid withdrawal systems should be considered: cold ambients, small tanks, large generators <br />■LP liquid systems require pressure rated piping and vaporization outside a building <br />•Generac Design Resources <br />■“Installation Guidelines for Stationary Industrial Generators” manual 046622 (detailed information) <br />■“Power Design Pro” software -- mechanical design tab (gas piping pressure drop calculator) <br />•National Codes and Standards <br />■NFPA 37 “Installation and use of Stationary Combustion Engines” <br />■NFPA 54 “National Fuel Gas Code” <br />■NFPA 58 “LP Gas Code” <br />Docusign Envelope ID: 2F58BEE5-DDBE-42EB-8DFA-5E2508488B04