Heater Catalog (Section) - Immersion Heaters - Watlow

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Immersion HeatersWATROD and FIREBAR FlangeImmersion HeatersSquare Flange Immersion HeatersApplication Hints• Determine recommended sheath materials and wattdensities by using the Element and Assembly SelectionGuide on pages 554 to 555. If wattage is not known,contact your Watlow representative.• Extend the element’s no-heat section completely inthe fluid at all times to prevent premature heater failure.See the accompanying illustration for properplacement of the no-heat section.• Mount WATROD and FIREBAR square flange heatershorizontally and low in the tank, but above sludge level.• Periodically remove heaters to inspect and clean theelements.• Keep terminations clean, dry and tight.• Minimize problems associated with low liquid levelconditions by using a low liquid level sensor.1 in. (25 mm)Minimum No-Heat SectionORHeater Dimension in. (mm)A 1 1 /2 (38)C 2 1 /2 (64)D 2 1 /2 (64)E 1 (25)H 1 1 /2 (38)(4) 13 /32 in. Dia.(10 mm)2 1 /2 inch Square Flange—WATROD ElementWatrod Immersed Part Number Est. Ship.Description kW B Dimension 240VAC 240VAC 480VAC 480VAC Wt.in. (mm) 1-Phase 3-Phase 1-Phase 3-Phase lbs (kg)Applications: Clean and Potable Water100 W/in 2 8.0 11 3 /4 (298.0) FHN11N10 b FHN11N3 b FHN11N11 b FHN11N5 1 18 (9)Steel Flange3-Alloy 800(15.5 W/cm 2 )Applications: Forced Air and Gases, Caustic Solutions, Degreasing Solutions30 W/in 2 3.0 18 1 /2 (470.0) FHN18J10 1 ¿ FHN18J3 1 FHN18J11 b ¡ FHN18J5 b ¡ 19 (9)304 SS Flange 3.75 23 1 /16 (585.8) FHN23B10 1 ¿ FHN23B3 1 ¿ FHN23B11 b ¡ FHN23B5 b ¡ 20 (9)3-Alloy 800(4.7 W/cm 2 )25 W/in 2 1.5 12 (305.0) FHN12A10 1 FHN12A3 1 FHN12A11 b ¡ FHN12A5 b ¡ 18 (8)304 SS Flange3-Alloy 800(3.9 W/cm 2 )Applications: Bunker C and #6 Fuel Oils10 W/in 2 1.0 18 1 /2 (470.0) FHN18J12 1 ¿ FHN18J13 b ¡ 19 (9)304 SS Flange 1.25 23 1 /16 (585.8) FHN23B12 1 ¿ FHN23B13 b ¡ 20 (9)3-Alloy 800(1.6 W/cm 2 )8 W/in 2 0.5 12 (305.0) FHN12A12 1 ¿ FHN12A13 b 18 (8)304 SS Flange3-Alloy 800(1.3 W/cm 2 )RAPID SHIP• 1 Next day shipmentup to 5 pieces• b Manufacturing lead times314 WATLOW ®DCEClearance Hole Requirement For:2 1 /2 in. SQ. FLG. = 1 5 /8 in. Dia.3 1 /8 in. SQ. FLG. 0.315 = 2 1 /4in. in. or Dia. 0.430 in.1 (8 or 10.9 mm)/44 in. 1 /2 (6 in. mm) SQ. FLG. = 3 1 /4 in.Dia.WATROD ElementANo-Heat SectionBImmersed LengthH BundleO.D.
Immersion HeatersWATROD and FIREBAR FlangeImmersion HeatersSquare Flange Immersion HeatersHeater Dimension in. (mm)A 1 1 /2 (38)C 2 1 /2 (64)D 2 1 /2 (64)E 1 3 /4 (44)H 1 5 /16 (33)(4) 13 /32 in. dia.(10 mm)2 1 /2 inch Square Flange—FIREBAR Elementfirebar Immersed Part Number Est. Ship.Description kW B Dimension 208VAC 240VAC 240VAC 480VAC 480VAC Wt.in. (mm) 3-Phase 1-Phase 3-Phase 1-Phase 3-Phase lbs (kg)Applications: Clean and Potable Water100 W/in 2 5 11 1 /2 (292) FHNFA11J26N b FHNFA11J10N a FHNFA11J3N a FHNFA11J11N b FHNFA11J5N b 5 (3)Steel Flange 8 20 3 /4 (527) FHNFA20N26N b FHNFA20N10N a FHNFA20N3N a FHNFA20N11N b FHNFA20N5N a 7 (4)1-Alloy 800 10 24 3 /8 (619) FHNFA24G26N b FHNFA24G10N a FHNFA24G3N b FHNFA24G11N b FHNFA24G5N a 8 (4)(15.5 W/cm 2 ) 15 33 15 /16(862) FHNFA33S26N b FHNFA33S3N b FHNFA33S11N b FHNFA33S5N a 9 (5)80 W/in 2 16 22 5 /8 (575) FHNFB22L26J b FHNFB22L10J b FHNFB22L3J b FHNFB22L11J b FHNFB22L5J b 10 (5)Steel Flange1-Alloy 800(12.4 W/cm 2 )DC1/4 in.(6 mm)E1 in. (25 mm) FIREBAR ElementANo-Heat SectionBImmersed LengthH Bundle O.D.Heater Dimension in. (mm)A 1 (25.0)C 3 13 /16 (96.8)D 4 1 /2 (114.0)E 2 1 /4 (57.0)H 3 7 /32 (81.8)(6) 3 /8 in. dia. (10 mm) Holes Equally SpacedOn a "C" dia. Bolt CircleANo-Heat 1 in. (25 mm) FIREBAR ElementSectionHBundleD1/4 in.(6 mm)BImmersed Length4 1 /2 inch Square Flange—FIREBAR ElementFIREBAR Immersed Part Number Est. Ship.Description kW B Dimension 208VAC 240VAC 480VAC Wt.in. (mm) 3-Phase 3-Phase 3-Phase lbs (kg)Applications: Clean and Potable Water100 W/in 2 18 10 1 /2 (267) FGNFB10J26N b FGNFB10J3N b FGNFB10J5N a 16 (8)Steel Flange2-Alloy 800(15.5 W/cm 2 )70 W/in 2 12 10 1 /2 (267) FGNFB10J26P a FGNFB10J3P b FGNFB10J5P a 16 (8)Steel Flange2-Alloy 800(10.9 W/cm 2 )RAPID SHIP• 1 Next day shipmentup to 5 piecesWATLOW ®• b Manufacturing lead timesE315
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Thermowell2.50" WATROD195½ in. Dia
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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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