Hotstart Catalog - Davidson Sales Co.

HOTSTART immersion heaters are complete with a fixed-setting, built-in thermostat (shownbelow). All models are also available with an adjustable thermostat (pg. 31).IndustrialImmersion HeatersIdeal for heating hydraulic reservoirs on construction equipment and the sumps of large industrialengines.12" OR 18" DIM1.03.252” Screw Plug3.60CUS“W” Weathertight ModelNEMA 42" NPT12" OR 18" DIM1.3 4.3“W” Weathertight ModelNEMA 44.4“E” Hazardous Location ModelNEMA 4 & 72" NPTFIXED THERMOSTAT ASSEMBLY“E” Hazardous Location ModelNEMA 4 & 7Thermostat assembly shown in “EP” housing.LiquidLevelSwitchTYPICAL WIRING DIAGRAMSPowerInELECTRICAL RATING15 Amps at 120 VAC10 Amps at 240 VAC10 Amps at 277 VACThree phase and single phase above 277 VACGroundFuseTransformerFuseSensor SeatHeat Shrink CoverThermostat SensorSingle phase 277 VAC and belowPowerInGroundLiquidLevelSwitchTemp.ControlNOTES:On applications where level offluid is subject to change, aliquid level switch mounted aminimum of 3 to 4 inchesabove element isrecommended. Liquid levelswitch is not included withheater.All 380 Volt and 480 Voltheaters must be used inconjunction with contactor andcontrol transformer.All three phase heaters mustbe used with a contactor. Seepages 37 & 38.Higher or lower temperatureranges are available. ConsultHOTSTART.Temp.ControlElementContactor CoilHeatingElementHeatingElementCustomer Support: (509) 536-8660www.hotstart.com29