Watlow Heater Catalog

Immersion Heaters

WATROD and FIREBAR Screw Plug Immersion Heaters

®

®

Application: Process Water • 2 1 / 2 inch NPT screw plug

General Purpose

¾ in. NPT Knockout

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

Thermowell

• FIREBAR elements • Without thermostat • General purpose enclosure

2 ½ in. (64 mm) Bundle

4 ⁄ in. Dia. (117.5 mm)

21

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

3 ⁄ in. (85.7 mm) Cold (Ref.)

4 ⁄ in. Dia. (119.1 mm)

"B"

1 ¼ in. NPT Hubs

Moisture/Explosion- Resistant

(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

45 W/in 2 8 304 SS Plug 3-Alloy 800

(305) BLNF12A27S

C2-50 C2-92 BLNF12A27C C2-50 C2-92 BLNF14J27C C2-50 C2-92 BLNF17A27C C2-236 C2-214 BLNF21J27C C2-43 C2-35 BLNF21J28C C2-236 C2-214 BLNF26J27C C2-43 C2-35 BLNF26J28C C2-236 C2-214 BLNF31J27C C2-43 C2-35 BLNF31J28C C2-225 C2-226 BLNF41A28C C2-225 C2-226 BLNF50J28C

(6) C3-94 C3-93 (7) C3-94 C3-93 (7) C3-94 C3-93 (8) C3-114 C3-115 (8) C3-116 C3-118 (9) C3-114 C3-115 (9) C3-116 C3-118

240 6.0 3 12

10 (5) 11 (5) 12 (6) 14 (7) 14 (7) 17 (8) 17 (8) 18 (9) 18 (9) 20 (9) 22 (10)

13 14 15 17 17 20 20

240 7.5 3 14 1 / 2 (368) BLNF14J27S

(432) BLNF17A27S

240 9.0 3 17

Elements (7 W/cm 2 )

240 12.0 3 21 1 / 2 (546) BLNF21J27S 480 12.0 3 21 1 / 2 (546) BLNF21J28S 240 15.0 3 26 1 / 2 (673) BLNF26J27S 480 15.0 3 26 1 / 2 (673) BLNF26J28S 240 18.0 3 31 1 / 2 (800) BLNF31J27S 480 18.0 3 31 1 / 2 (800) BLNF31J28S 480 24.0 3 41 (1041) BLNF41A28S 480 30.0 3 50 1 / 2 (1283) BLNF50J28S

21 (10) C3-114 C3-115 21 (10) C3-116 C3-118 23 (11) C3-117 C3-119 25 (12) C3-117 C3-119

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. 5 No third party recognition 8 Can be wired for 1-phase operation

177