Medium and Large Capacity Engine Pre-heaters for Generator Sets and Mobile Equipment

SPOKANE, WA - Hotstart® Manufacturing offers a line of medium- to large-capacity (1.5 to 6 kW) engine coolant heaters for stationary and chassis-mounted applications. The CB/SB and CL/SL tank-style heaters feature fixed or adjustable thermostats, weather tight construction and can be mounted horizontally or vertically. The pre-heater units heat engines ranging in size from 3.25L - 27L displacement and up to 65L displacement when two pre-heaters are used on one engine. CB/SB heaters feature conduit-type wire assemblies for hard-wiring the unit on stationary equipment. CL/SL heaters are cord-connected and plug directly into AC power.

The heaters are designed with a ball-valve assembly which allows the reverse flow of coolant back into the heating chamber. This coolant bypass feature eliminates the need for an oil-pressure switch or relay normally required on auto-start engines. If the heater is energized during engine operation, the heater's built-in thermostat will detect the temperature of the reverse-flow coolant and automatically shut the heater off. Once proper flow is maintained through the heating chamber, the pre-heater unit will cycle on and off based on the thermostat settings. The draft angle inside the pressure die-cast aluminum tank provides an efficient flow rate of coolant through the heater and engine, while preventing air entrapment inside the heating chamber. The element and the tank's inlet are positioned low in the chamber to reduce the element's exposure to dry air.

A one-piece element assembly allows for simple field replacement. The flange-style, bolt-on element can only install in one position, preventing the possibility of premature failure that could result from incorrectly positioning a replacement element. All parts are replaceable for both heater lines resulting in extended service life without replacing the entire pre-heater.

All standard models are weatherproof, and explosion-proof models are also offered. Both types are available in the same wattage/voltage configurations: 1.5 through 6 kW ratings in voltages 120, 208, 240, 277, 380, 480 and 575, and single- or three-phase power. Specific configurations are CSA-C/US and UL-C/US listed to United States and Canadian safety standards. All medium- to large-capacity engine pre-heaters meet requirements for installation on any UL 2200 listed generator set.

About HOTSTART

Hotstart® Manufacturing Company (www.kimhotstart.com) is a leading developer and manufacturer of diesel engine block heaters. The company was established in 1942 with the original patent for engine coolant heating. Today, the Hotstart® product line includes coolant heaters, oil heaters, air heaters, battery pads and wraps, controls, harnesses and complete systems. These products are used on diesel engines to provide easy starts, immediate full power, reduced engine wear, reduced emissions and reduced fuel consumption. Applications include standby generator sets, locomotives, equipment/machinery, gas pipeline compressors, heavy duty trucks and marine. Hotstart® is headquartered in Spokane, Washington and is certified to ISO 9001-2000.