W A T L O W 
Tubular and
Process Assemblies | F.O.B.: Hannibal, Missouri |
Circulation Heaters
Engine Preheaters
Application Hints•Mount engine preheaters in horizontal position only (as shown in Figures #1, #2 and #3). Consult 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.
| • Estimate kilowatt requirements |
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| English | |||||||
| with the following formula. First |
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| Cubic inches X 3 = estimated wattage | |||||||||||||||||||
| determine the engine |
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| Metric | ||||||||
| displacement, then multiply: |
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| Liters X 183 = estimated wattage | ||||||||||||
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| 1/4"- 20 Mounting Bolts | ||||||||||||||
Outlet Nozzle |
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| Vibration | |||||||
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Sized for 1" I.D. |
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| Isolator Bushings | |||||||
(25 mm) hose Mounting Slots |
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| (2) Mounting Studs | ||||||||||
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WATROD Heating Element | Check Valve Inlet Nozzle | |
Thermowell | Sized for 1" I.D. | |
Drain |
| (25 mm) hose |
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NEMA 1 Terminal Enclosure
Circulation Heaters
Figure 1 |
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| (4) | Mounting Slots 9/32" X 3/4" |
| 33/4" |
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| (7 mm X 19 mm) | 2" (50 mm) | (95 mm) |
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| 3 " |
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| 1 | 8" |
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| 63/16" |
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6 /8 | 3 |
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| (157 mm) |
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| (162 mm) |
| (79 mm) |
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4 5/8" (117 mm)
23/16" (56 mm) | 1" (25 mm) |
Up | Outlet |
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| 21/4" (57 mm) |
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| Ref. Diameter |
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| (4) |
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| 1 | 2" |
| Bolts, 5/8" | 4 | 5 | " | |
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| (38 mm) | (16 mm) |
| /8 | |||
| 1 / |
| (117 mm) | ||||||
Overall Length ±3/8" (10 mm) |
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| Threaded | ||||
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| Length |
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| Overall |
| Code No. |
| Est. Ship. | ||
| kW | Length | 120/240VÅ(ac) | 208VÅ(ac) | 240/480VÅ(ac) | Weight | ||
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| Inch (mm) | lbs | (kg) | ||||
| Application: Ethylene Glycol/Engine Coolant |
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| 1.13 | 207⁄8 (530) |
| CPBPL2S12➀ |
| 12 | (6) | |
| 1.50 | 207⁄8 (530) | CPBPB6S12 | CPBPB2S12➀ |
| 12 | (6) | |
| 1.69 | 207⁄8 (530) |
| CPBPM2S12➀ |
| 12 | (6) | |
| 1.88 | 207⁄8 | (530) |
| CPBPN2S12➀ |
| 12 | (6) |
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| 2.00 | 207⁄8 | (530) | CPBPC6S12 |
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| 12 | (6) |
| 2.25 | 207⁄8 | (530) | CPBPD6S12 |
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| 12 | (6) |
| 2.25 | 2611⁄16 (678) |
| CPBPD2S12➀ |
| 15 | (7) | |
| 2.50 | 207⁄8 | (530) | CPBPE6S12 |
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| 12 | (6) |
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| 3.00 | 2611⁄16 (678) |
| CPBPF2S12➀ | CPBPF7S12 | 15 | (7) | |
| 3.75 | 2611⁄16 (678) |
| CPBPG2S12➀ |
| 15 | (7) | |
| 4.00 | 2611⁄16 (678) |
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| CPBPH7S12 | 15 | (7) | |
| 5.00 | 2611⁄16 (678) |
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| CPBPJ7S12➀ | 15 | (7) | |
| All preheaters are Stock unless | ➀ Standard |
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| otherwise noted. |
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Availability
Stock: Same day shipment
Standard: Four weeks
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