Watlow Heater Catalog

Circulation Heaters

3 3 / 4 " (95 mm)

1" (25 mm)

WATROD and FIREBAR Heaters Engine Preheaters • Mount engine preheaters in horizontal position only (as shown in Figures 1, 2 and 3). Contact your Watlow representative if vertical mounting is unavoidable. • Mount the heater near or below the lowest point on the engine block. Keep outlet nozzle pointed up, as indicated on the tank. 4 5 / 8 " (117 mm) Drain

2" (51 mm)

• Estimate kilowatt requirements with the following formula. First determine the engine displacement, then multiply:

(4) 1 / 4 -20 Bolts, 5 / 8 " (16 mm) Threaded Length

Incoloy ® Watrod

Check Valve

English Cubic inches X 3 = estimated wattage Metric Liters X 183 = estimated wattage

Thermowell

4 5 / 8 " ( Dia

1 / 4 in. - 20 Mounting Bolts

Outlet Nozzle Sized for 1 in. (25 mm) I.D. hose

Vibration Isolator Bushings (2) Mounting Studs

Mounting Slots

WATROD Heating Element

Check Valve Inlet Nozzle Sized for 1 in. (25 mm) I.D. hose

Thermowell

Drain

NEMA 1 Terminal Enclosure

(4) Mounting Slots 9 / 32 x 3 / 4 in. (7.1 X 19 mm)

Figure 1

3 3 / 4 in. (95 mm)

6 3 / 8 in. (161.9 mm)

2 in. (51 mm)

6 3 / 16 in. (157.2 mm)

3 1 / 8 in. (79.4mm)

®

®

1 in. (25 mm)

2 3 / 16 in. (55.6 mm)

2 1 / 4 in. (57 mm) Ref. Diameter

Up Outlet

(4) 1 / 4 -20 Bolts, 5 / 8 in. (15.9 mm) Threaded Length

4 5 / 8 in. (117.4 mm)

4 5 / 8 in. (117.5 mm)

1 1 / 2 in. (38 mm)

Overall Length ± 3 / 8 in. (9.5 mm)

Overall Length

Part Number

Est. Ship.

kW

120/240VAC

208VAC 1-Phase

240/480VAC

Wt.

in.

(mm)

1-Phase

1-Phase

lbs (kg)

Application: Ethylene Glycol/Engine Coolant 1.13 20 7 / 8 (530.2) CPBPL2S12

12 12 12 12 12 12 15 12 15 15 15 15

(6) (6) (6) (6) (6) (6) (7) (6) (7) (7) (7) (7)

1.50 20 7 / 8 (530.2) 1.69 20 7 / 8 (530.2) 1.88 20 7 / 8 (530.2) 2.00 20 7 / 8 (530.2) 2.25 20 7 / 8 (530.2) 2.25 26 11 / 16 (677.9) 2.50 20 7 / 8 (530.2) 3.00 26 11 / 16 (677.9) 3.75 26 11 / 16 (677.9) 4.00 26 11 / 16 (677.9) 5.00 26 11 / 16 (677.9)

CPBPB6S12

CPBPB2S12 CPBPM2S12 CPBPN2S12

CPBPC6S12 CPBPD6S12

CPBPD2S12

CPBPE6S12

CPBPF2S12 CPBPG2S12

CPBPF7S12

CPBPH7S12 CPBPJ7S12

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