Heater Catalog (Section) - Immersion Heaters - Watlow

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4"-150# FLANGEImmersion Heaters35½ in.(140 mm)Thermowell0.475 in. (12.1 mm) Dia. Element37⁄8 in. O.D.(98.4 mm)WATROD and FIREBAR ANSI FlangeImmersion Heaters8 in.(203 mm)4 in. (102 mm) Cold (Ref.)“B”®®Application: Bunker C, Asphalt and#6 Fuel Oil• 4 inch - 150 lb ANSI flange• FIREBAR elements• Without thermostat• General purpose ormoisture-resistant enclosuresGeneral Purpose and4"-150# FIREBAR FLANGE Moisture Resistant45½ in.(140 mm)83⁄8 in.(212.7 mm)Thermowell4 in. (102 mm) Cold (Ref.)“B”1 in. (25 mm)FIREBAR Element37⁄8 in. O.D.(98.4 mm)Description Volts kW Ph8 W/in 2 3304 SS Flange6-Alloy 800Elements(1.3 W/cm 2 )RAPID SHIP• RS - Next day shipmentup to 5 pieces#Circ.“B” Dim.in. (mm)1 The number and size of the conduit opening will comply with theNational Electrical Code ® standards.Ship Wt.lbs (kg)PartNumber Del.General Purpose EnclosurePartNumber Del.Moisture-Resistant Enclosure240 2.50 3 1 16 1 /2 (420) 35 (16) FONF16J22S RS FONF16J22W RS240 3.25 3 1 19 1 /2 (495) 38 (17) FONF19J22S RS FONF19J22W RS240 4.25 3 1 24 1 /2 (622) 41 (19) FONF24J22S RS FONF24J22W RS480 4.25 3 1 24 1 /2 (622) 41 (19) FONF24J21S RS FONF24J21W RS240 5.25 3 1 30 (762) 44 (20) FONF30A22S RS FONF30A22W RS480 5.25 3 1 30 (762) 44 (20) FONF30A21S RS FONF30A21W RS240 6.38 3 1 35 (889) 46 (21) FONF35A22S RS FONF35A22W RS480 6.38 3 1 35 (889) 46 (21) FONF35A21S RS FONF35A21W RS240 8.50 3 1 45 1 /2 (1156) 50 (23) FONF45J22S RS FONF45J22W RS480 8.50 3 1 45 1 /2 (1156) 50 (23) FONF45J21S RS FONF45J21W RS240 10.75 3 1 56 (1422) 54 (25) FONF56A22S RS FONF56A22W RS480 10.75 3 1 56 (1422) 54 (25) FONF56A21S RS FONF56A21W RSNotes: • All flange bundles are designed to fit the inside diameterof the equivalent standard schedule pipe• For ANSI flange dimensions, reference chart on page 2413 Wired for 3-phase operation only298 WATLOW ®
Immersion HeatersWATROD and FIREBAR ANSI FlangeImmersion Heaters®®Application: Bunker C, Asphalt 5"-150# FLANGE and#6 Fuel Oil• 5 inch - 150 lb ANSI flange• WATROD elements• Without thermostat• General purpose ormoisture-resistant enclosuresThermowell0.475 in. (12.1 mm) Dia. Element7 in.4¾ in. O.D.5 (178 mm)(121 mm)6"-150# FLANGE8 in. O.D.(203 mm)4 in. (102 mm) Cold (Ref.)# “B” Dim. Ship Wt.PartPartDescription Volts kW Ph Circ. in. (mm) lbs (kg) Number Del. Number Del.General Purpose Enclosure Moisture-Resistant 0.475 in. (12.1 mm) EnclosureDia. Element8 W/in 2 3 240 5.0 3 1 40 1 Thermowell/26(1029) 47 (22) FNS740J12S RS FNS740J12W RSSteel Flange480 5.0 3 1 406-Steel8 in./2 (1029) 47 (22) FNS740J13S RS FNS740J13W57⁄8 in. O.D.(203 mm)(149.2 mm) RSElements 240 6.0 3 1 48 (1219) 52 (24) FNS748A12S RS FNS748A12W RS(1.3 W/cm 2 ) 480 6.0 3 1 48 (1219) 52 (24) FNS748A13S RS FNS748A13W RS240 8.0 3 1 64 1 4 in. (102 mm) Cold (Ref.)/2 (1638) 57 (26) FNS764J12S RS FNS764J12W RS“B”480 8.0 3 1 64 1 8 in./2 (1638) 57 (203 mm) (26) FNS764J13S RS FNS764J13W RS240 10.0 3 1 77 (1956) 65 (28) FNS777A12S RS FNS777A12W RS480 10.0 3 1 77 (1956) 65 (28) FNS777A13S RS FNS777A13W RS8 W/in 2 3 240 7.5 3 1 40 1 /2 (1029) 53 (24) FNS740J12XS RS FNS740J12XW RSSteel Flange9-Steel480 7.5 3 1 40 1 /2 (1029) 53 (24) FNS740J13XS RS FNS740J13XW RSElements 240 9.0 3 1 48 (1219) 60 (28) FNS748A12XS RS FNS748A12XW RS(1.3 W/cm 2 ) 480 9.0 3 1 48 (1219) 60 (28) FNS748A13XS RS FNS748A13XW RS240 12.0 3 1 64 1 /2 (1638) 68 (31) FNS764J12XS RS FNS764J12XW RS480 12.0 3 1 64 1 /2 (1638) 68 (31) FNS764J13XS RS FNS764J13XW RS240 15.0 3 1 77 (1956) 78 (36) FNS777A12XS M FNS777A12XW M480 15.0 3 1 77 (1956) 78 (36) FNS777A13XS M FNS777A13XW MRAPID SHIP• RS - Next day shipmentup to 5 pieces• M - Manufacturing lead timesGeneral Purpose andMoisture Resistant1 The number and size of the conduit opening will comply with theNational Electrical Code ® standards.“B”Notes: • All flange bundles are designed to fit the inside diameterof the equivalent standard schedule pipe• For ANSI flange dimensions, reference chart on page 2413 Wired for 3-phase operation onlyTruck Shipment onlyWATLOW ®299
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Immersion HeatersMax. Operating Typ
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Immersion HeatersWATROD and FIREBAR
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Thermowell2.50" WATROD195½ in. Dia
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Immersion Heaters1.25" FIREBAR11WAT
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Immersion Heaters2" WATRODWATROD an
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Stand-offTerminalEnclosureConduitOp
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Direction of FlowImmersion HeatersW
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7½ in. Ref.(191 mm)75⁄8 in.(193.
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Heater Catalog (Section) - Immersion Heaters - Watlow

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