The generator for Pack Monadnock, Mt Whittier, and Holdon Hill are required to have all of the following: 1 20 KW rated stand by generator LP vapor fueled operation Liquid cooled natural aspirated engine 4 cycle, 1800 rpm, 60 hertz engine Rubber pad type vibration isolators Vibration isolated unit mounted automatic digital control panel per NFPA 110 compliance Permanent magnet generator Jacket water heater, mounted Lead acid battery set, unit mounted Auto float/ equalize, unit mounted UL listed battery charger, minimum output is 5 amps - Generator to be delivered with initial fill of lubricating oil and antifreeze with engine antifreeze rated for –50F Two (2) operation and parts/ maintenance manual 120/ 240 single phase operation Unit mounted main circuit breaker Full output brushless battery charging alternator Operate at an altitude between 1,000 feet and 2,000 feet All components must be UL listed and approved. Proper grounding, in accordance with the applicable code, is required.