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

General Purpose

¾ in. NPT Knockout

Thermowell

¾ in. NPT Knockout

1 in. (25 mm) FIREBAR Element 1 in. (25 mm) FIREBAR Element

Thermowell

1 ⁄ in. (34.9 mm) Bundle 1 ⁄ in. (34.9 mm) Bundle

• FIREBAR elements • Without thermostat • General purpose enclosure

4 ⁄ in. Dia. (117.5 mm) 4 ⁄ in. Dia. (117.5 mm)

9

"B" 3 ⁄ in. (98.4 mm) Cold (Ref.) "B" 3 ⁄ in. (98.4 mm) Cold (Ref.)

9

4 in. (102 mm) 4 in. (102 mm)

• Moisture/Explosion-Resistant enclosure (suitable for use in non-classified areas only) 1.25" FIREBAR

Moisture/Explosion- Resistant

¾ in. NPT Hubs

Thermowell

1.25" FIREBAR

1 in. (25 mm) FIREBAR Element 1 in. (25 mm) FIREBAR Element

¾ in. NPT Hubs

Thermowell

1 ⁄ in. (34.9 mm) Bundle 1 ⁄ in. (34.9 mm) Bundle

5 ⁄ in. Dia. (136.5 mm) 5 ⁄ in. Dia. (136.5 mm)

10

3 ⁄ in. (98.4 mm) Cold (Ref.)

10

5 ⁄ in. (150.8 mm) 5 ⁄ in. (150.8 mm)

"B"

3 ⁄ in. (98.4 mm) Cold (Ref.)

"B"

WATCONNECT Part Number

WATCONNECT Part Number

“B” Dim. in. (mm)

Part Number

Ship Wt. lbs (kg)

Part Number 5

Ship Wt. lbs (kg)

Description Volts kW Ph

Type J T/C

Type K T/C

Type J T/C

Type K T/C

General Purpose Enclosure

Moisture/Explosion- Resistant Enclosure

240 0.43 3 16 1 / 8 (409.6) BDNF16G22S 240 0.55 3 19 1 / 8 (485.8) BDNF19G22S 240 0.70 3 24 3 / 8 (619.1) BDNF24L22S 480 0.70 3 24 3 / 8 (619.1) BDNF24L21S 240 0.88 3 29 5 / 8 (752.5) BDNF29R22S 480 0.88 3 29 5 / 8 (752.5) BDNF29R21S 240 1.08 3 34 5 / 8 (879.5) BDNF34R22S 480 1.08 3 34 5 / 8 (879.5) BDNF34R21S 240 1.40 3 45 1 / 8 (1146.2) BDNF45G22S 480 1.40 3 45 1 / 8 (1146.2) BDNF45G21S 240 1.80 3 55 5 / 8 (1412.9) BDNF55R22S 480 1.80 3 55 5 / 8 (1412.9) BDNF55R21S

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

C2-50 C2-92 BDNF16G22C C2-50 C2-92 BDNF19G22C C2-50 C2-92 BDNF24L22C C2-43 C2-35 BDNF24L21C C2-50 C2-92 BDNF29R22C C2-43 C2-35 BDNF29R21C C2-50 C2-92 BDNF34R22C C2-43 C2-35 BDNF34R21C C2-50 C2-92 BDNF45G22C C2-43 C2-35 BDNF45G21C C2-50 C2-92 BDNF55R22C C2-43 C2-35 BDNF55R21C

C3-94 C3-93 C3-94 C3-93 C3-94 C3-93 C3-116 C3-118 C3-94 C3-93 C3-116 C3-118 C3-94 C3-93 C3-116 C3-118 C3-94 C3-93 C3-116 C3-118 C3-94 C3-93 C3-116 C3-118

7 (4) 8 (4) 9 (4) 9 (4) 10 (5) 10 (5) 11 (5) 11 (5) 13 (6) 13 (6) 15 (7) 15 (7)

10 (5) 11 (5) 12 (6) 12 (6) 13 (6) 13 (6) 14 (7) 14 (7) 16 (8) 16 (8) 18 (9) 18 (9)

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

210