Heater Catalog - Watlow

Circulation HeatersWATROD and FIREBAR HeatersEngine PreheatersApplication Hints1" (25 mm)2" (51 mm)3 3 /4"(95 mm)• Mount engine preheaters in horizontal position only(as shown in Figures 1, 2 and 3). Contact your Watlowrepresentative if vertical mounting is unavoidable.• Mount the heater near or below the lowest point onthe engine block. Keep 4 5 /8" outlet nozzle pointed up, Drain asindicated on the tank. (117 mm)• Estimate kilowatt requirements with the followingformula. First determine the engine displacement,then multiply:Incoloy ® WatrodCheck ValveThermowellEnglishCubic inches X 3 = estimated wattageMetricLiters X 183 = estimated wattage(4) 1 /4-20Bolts, 5 /8" (16 mm)Threaded Length4 5 /8" (117 mDiameterOutlet NozzleSized for1 in. (25 mm)I.D. hose1/4 in.- 20 Mounting BoltsVibrationIsolator BushingsMounting Slots(2) Mounting StudsWATROD Heating Element Check Valve InletThermowellDrainNEMA 1 Terminal EnclosureNozzle Sized for1 in. (25 mm) I.D. hoseFigure 16 3 /8 in.(161.9 mm)(4) Mounting Slots 9 /32 x 3 /4 in.(7.1 X 19 mm)3 1 /8 in. 6 3 /16 in.(79.4 mm) (157.2 mm)2 in. (51 mm)3 3 /4 in.(95 mm)4 5 /8 in.(117.4 mm)UpOutletOverall Length ± 3 /8 in. (9.5 mm)2 3 /16 in. (55.6 mm)2 1 /4 in. (57 mm)Ref. Diameter1 1 /2 in. (38 mm)1 in. (25 mm)(4) 1 /4-20Bolts, 5 /8 in.(15.9 mm) 4 5 /8 in.Threaded (117.5 mm)LengthOverall Part Number Est. Ship.kW Length 120/240VAC 208VAC 240/480VAC Wt.in. (mm) 1-Phase 1-Phase 1-Phase lbs (kg)Application: Ethylene Glycol/Engine Coolant1.13 20 7 /8 (530.2) CPBPL2S12 1 12 (6)1.50 20 7 /8 (530.2) CPBPB6S12 CPBPB2S12 1 12 (6)1.69 20 7 /8 (530.2) CPBPM2S12 1 12 (6)1.88 20 7 /8 (530.2) CPBPN2S12 1 12 (6)2.00 20 7 /8 (530.2) CPBPC6S12 12 (6)2.25 20 7 /8 (530.2) CPBPD6S12 12 (6)2.25 26 11 /16 (677.9) CPBPD2S12 1 15 (7)2.50 20 7 /8 (530.2) CPBPE6S12 12 (6)3.00 26 11 /16 (677.9) CPBPF2S12 1 CPBPF7S12 15 (7)3.75 26 11 /16 (677.9) CPBPG2S12 1 15 (7)4.00 26 11 /16 (677.9) CPBPH7S12 15 (7)5.00 26 11 /16 (677.9) CPBPJ7S12 1 15 (7)RAPID SHIP• Next day shipmentup to 2 pieces• 1 - Manufacturing lead times380WATLOW ®