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I <br /> Section 40 90 00 PROCESS CONTROL SYSTEM GENERAL PROVISIONS <br /> C. ENCLOSURE HEATERS <br /> 1. Provide a fan-driven resistance heater(or as shown on plans)with 120 <br /> Volts Alternating Current. Provide separate thermostat which is <br /> adjustable between at least 40° Fahrenheit and 80° Fahrenheit; use of <br /> only thermostats integrated to the heater is not acceptable. Unless <br /> otherwise noted, provide wattage and voltage required to maintain 20 <br /> degrees above ambient at historically coldest measured temperature. <br /> Heater shall be Hoffman bulletin DAH series or approved equal. <br /> 2. Provide a 100-watt (or as shown on the plans) resistance heater with 120 <br /> 111 <br /> Volts Alternating Current rated line thermostat in each control enclosure <br /> located outdoors or in moist environments. Provide heater with aluminum <br /> mounting plate for application in a non-metallic enclosure. Provide <br /> 3 <br /> external heating control thermostat; use of only thermostats integrated to <br /> the heater is not acceptable. The heater shall be silicone rubber type as <br /> Imanufactured by WATLOW ELECTRIC , St. Louis, MO. or equal. <br /> 3. Provide heating control thermostat with adjustable heating range of at <br /> least 0 to 60° Celsius with contact ratings sufficient for connected load. <br /> Provide Hoffman Enclosures ATEM series or equal. <br /> D. NAMEPLATES <br /> 1. Nameplates shall be phenolic with engraved lettering. Attach nameplates <br /> to enclosures with screws and glue. It is also acceptable to weld <br /> nameplate holders to the enclosure. <br /> 2.05 WIRING PROTECTIVE DEVICES <br /> A. FUSES <br /> 1. Control power fuses shall be FRN for ratings above ten amperes and <br /> FNQ for ten amperes and below. FRN fuses are mounted in phenolic <br /> blocks with a fuse puller hanging adjacent to them. FNQ fuses are <br /> mounted in a Buss CHM1 I modular fuseholder with indicator light. Label <br /> all fuseholders with fuse identification number and fuse size and type. <br /> Provide three spare fuses of each type and size in each panel. Provide <br /> box mounted on panel interior marked "SPARE FUSES"to hold the <br /> Ispares. <br /> 2. Control power fuses connected to non-signaling circuits (for example, <br /> solenoids, actuators, relay coils, network switches, PLC power supplies) <br /> less than 10 amperes and less than 250 volts shall be 13/32" x 1-1/2" <br /> (10.3 x 38.1 mm) midget or CC type, dual element time delay, <br /> supplementary protection fuses. Cooper-Bussmann LP-CC dual element <br /> series or Littlefuse CCMR series unless otherwise noted or required by <br /> Manufacturer of connected equipment. <br /> Provide finger-safe modular fuse holder with blown fuse indicators, Allen- <br /> Bradley 1492-FB, Cooper Bussman CH series, Weidmuller UK 10.3, or <br /> equal. Plug-in fuse holders mounted to terminal blocks are not <br /> acceptable. <br /> City of Everett 40 90 00-9 January 2022 <br /> Evergreen Pump Station Modifications <br /> UP3747-3 <br /> Issued for Bid <br />