Watlow Heater Catalog

Immersion Heaters

WATROD and FIREBAR Screw Plug Immersion Heaters

®

®

¾ in. NPT Knockout

Application: Bunker C, Asphalt and #6 Fuel Oil • 2 1 / 2 inch NPT screw plug

(3) 1 in. (25 mm) FIREBAR Elements

General Purpose

Thermowell

2 ½ in. (64 mm) Bundle

4 ⁄ in. Dia. (117.5 mm)

21

• FIREBAR elements • Without thermostat • General purpose enclosure

3 ⁄ in. (85.7 mm) Cold (Ref.)

4 ⁄ in. Dia. (119.1 mm)

"B"

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

Moisture/Explosion- Resistant

1 ¼ in. NPT Hubs

(3) 1 in. (25 mm) FIREBAR Elements

Thermowell

2 ½ in. (64 mm) Bundle

6 ¼ in. Dia. (159 mm)

22

3 ⁄ in. (85.7 mm) Cold (Ref.)

7 ¼ in. Dia. (185 mm)

"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 1.25 3 15 1 / 8 (384.2) BLNF15C22S 11 (5) 240 1.63 3 18 1 / 8 (460.4) BLNF18C22S 12 (6) 240 2.13 3 23 1 / 8 (587.4) BLNF23C22S 14 (7) 480 2.13 3 23 1 / 8 (587.4) BLNF23C21S 14 (7) 240 2.63 3 28 5 / 8 (727.1) BLNF28L22S 17 (8) 480 2.63 3 28 5 / 8 (727.1) BLNF28L21S 17 (8) 240 3.19 3 33 5 / 8 (854.1) BLNF33L22S 18 (9) 480 3.19 3 33 5 / 8 (854.1) BLNF33L21S 18 (9) 240 4.25 3 44 1 / 8 (1120.8) BLNF44C22S 20 (9) 480 4.25 3 44 1 / 8 (1120.8) BLNF44C21S 20 (9) 240 5.38 3 54 5 / 8 (1387.5) BLNF54L22S 22 (10) 480 5.38 3 54 5 / 8 (1387.5) BLNF54L21S 22 (10)

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

C2-50 C2-92 BLNF15C22C 14 (7) C2-50 C2-92 BLNF18C22C 15 (7) C2-50 C2-92 BLNF23C22C 17 (8) C2-43 C2-35 BLNF23C21C 17 (8) C2-50 C2-92 BLNF28L22C 20 (9) C2-43 C2-35 BLNF28L21C 20 (9) C2-50 C2-92 BLNF33L22C 21 (10) C2-43 C2-35 BLNF33L21C 21 (10) C2-50 C2-92 BLNF44C22C 23 (11) C2-43 C2-35 BLNF44C21C 23 (11) C2-50 C2-92 BLNF54L22C 25 (12) C2-43 C2-35 BLNF54L21C 25 (12)

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

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

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