Watlow Heater Catalog

Immersion Heaters

WATROD and FIREBAR Screw Plug Immersion Heaters

®

®

Application: Bunker C, Asphalt and #6 Fuel Oil • 1 1 / 4 inch NPT screw plug • FIREBAR elements • With thermostat (DPST), Type 5A or 7A • General purpose enclosure • Moisture/Explosion-Resistant enclosure (suitable for use in non-classified areas only) 1.25" FIREBAR

¾ in. NPT Knockout

General Purpose

Thermowell

1 in. (25 mm) FIREBAR Element

1 ⁄ in. (34.9 mm) Bundle

5 ½ in. Dia. (140 mm)

11

3 ⁄ in. (98.4 mm) Cold (Ref.)

6 ⁄ in. (161.9 mm)

"B"

Moisture/Explosion- Resistant

1 ½ in. NPT Hubs

Thermowell

1 in. (25 mm) FIREBAR Element

1 ⁄ in. (34.9 mm) Bundle

7 ⁄ in. Dia. (193.7 mm)

1.25" FIREBAR

12

3 ⁄ in. (98.4 mm) Cold (Ref.)

8 in. (203 mm)

"B"

Type 5A (60-250°F)

Type 7A (100-550°F)

WATCONNECT Part Number

WATCONNECT Part Number

“B” Dim. in. (mm)

Ship Wt. lbs (kg)

Part Number

Part Number

Description Volts kW Ph

Type J T/C

Type K T/C

Type J T/C

Type K T/C

General Purpose

General Purpose

240 0.43 3 16 1 / 8 (409.6) 8 (4) BDNF16G22S5A 240 0.55 3 19 1 / 8 (485.8) 9 (4) BDNF19G22S5A 240 0.70 3 24 3 / 8 (619.1) 10 (5) BDNF24L22S5A 480 0.70 3 24 3 / 8 (619.1) 10 (5) BDNF24L21S5A 240 0.88 3 29 5 / 8 (752.5) 11 (5) BDNF29R22S5A 480 0.88 3 29 5 / 8 (752.5) 11 (5) BDNF29R21S5A 240 1.08 3 34 5 / 8 (879.5) 12 (6) BDNF34R22S5A 480 1.08 3 34 5 / 8 (879.5) 12 (6) BDNF34R21S5A 240 1.40 3 45 1 / 8 (1146.2) 14 (7) BDNF45G22S5A 480 1.40 3 45 1 / 8 (1146.2) 14 (7) BDNF45G21S5A 240 1.80 3 55 5 / 8 (1412.9) 16 (8) BDNF55R22S5A 480 1.80 3 55 5 / 8 (1412.9) 16 (8) BDNF55R21S5A 240 0.43 3 16 1 / 8 (409.6) 11 (5) BDNF16G22C5A 240 0.55 3 19 1 / 8 (485.8) 12 (6) BDNF19G22C5A 240 0.70 3 24 3 / 8 (619.1) 13 (6) BDNF24L22C5A 480 0.70 3 24 3 / 8 (619.1) 13 (6) BDNF24L21C5A 240 0.88 3 29 5 / 8 (752.5) 14 (7) BDNF29R22C5A 480 0.88 3 29 5 / 8 (752.5) 14 (7) BDNF29R21C5A 240 1.08 3 34 5 / 8 (879.5) 15 (7) BDNF34R22C5A 480 1.08 3 34 5 / 8 (879.5) 15 (7) BDNF34R21C5A 240 1.40 3 45 1 / 8 (1146.2) 17 (8) BDNF45G22C5A 480 1.40 3 45 1 / 8 (1146.2) 17 (8) BDNF45G21C5A 240 1.80 3 55 5 / 8 (1412.9) 19 (9) BDNF55R22C5A 480 1.80 3 55 5 / 8 (1412.9) 19 (9) BDNF55R21C5A

8 W/in 2 3 304 SS Plug 1-Alloy 800 Element (1.3 W/cm 2 )

C/F C/F BDNF16G22S7A C/F C/F BDNF19G22S7A C/F C/F BDNF24L22S7A C/F C/F BDNF24L21S7A C/F C/F BDNF29R22S7A C/F C/F BDNF29R21S7A C/F C/F BDNF34R22S7A C/F C/F BDNF34R21S7A C/F C/F BDNF45G22S7A C/F C/F BDNF45G21S7A C/F C/F BDNF55R22S7A C/F C/F BDNF55R21S7A C/F C/F BDNF16G22C7A C/F C/F BDNF19G22C7A C/F C/F BDNF24L22C7A C/F C/F BDNF24L21C7A C/F C/F BDNF29R22C7A C/F C/F BDNF29R21C7A C/F C/F BDNF34R22C7A C/F C/F BDNF34R21C7A C/F C/F BDNF45G22C7A C/F C/F BDNF45G21C7A C/F C/F BDNF55R22C7A C/F C/F BDNF55R21C7A Type K T/C

C/F C/F C/F C/F C/F C/F C/F C/F C/F C/F C/F C/F C/F C/F C/F C/F C/F C/F C/F C/F C/F C/F C/F C/F C/F C/F C/F C/F C/F C/F C/F C/F C/F C/F C/F C/F C/F C/F C/F C/F C/F C/F C/F C/F C/F C/F C/F C/F

Moisture/ Explosion-Resistant Enclosure 5

Moisture/ Explosion-Resistant Enclosure 5

Type J T/C

Type J T/C

Type K T/C

8 W/in 2 3 304 SS Plug 1-Alloy 800 Element (1.3 W/cm 2 )

Note: All screw plug bundles are designed to fit the inside diameter of the equivalent mating coupling. They will not fit into the equivalent pipe inside diameter.

3 Wired for 3-phase operation only 5 No third party recognition C/F - Contact factory, go to www.watlow.com/en/contact-us

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