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6
OUTER SHELL, INSULATION, AND SUPPORTS
The pressure vessel is encapsulated in 2-inches of high-density fiberglass insulation. The protective
shell is constructed of galvaneel and is coated with a durable silver hammertone finish. The horizontal
configuration is supported on heavy-duty steel I-beam supports. Also available in a vertical
configuration or wall hung for off the floor installation.
HEATING ELEMENT
The heater is supplied with a flanged electric immersion heating element assembly, composed of
copper, incoloy, or stainless steel sheathed elements that are brazed or welded into a ANSI steel flange.
The heating element is fastened to a corresponding tank flange using a gasket and hex head steel bolts
and nuts. Specialized heating element construction may be included. These options include: special
watt density ratings, passivation, electropolishing, or special materials. See drawing for voltage, power
ratings, and special options.
ELECTRICAL ENCLOSURE
A louvered control panel available in various sizes and with assorted types of handles is supplied. The
standard cabinet is rated NEMA 1, but other NEMA rated enclosures are available, consult drawing for
further information. A list of NEMA ratings are available in Section VI. An optional explosion-proof
enclosure is available for hazardous locations.
FLOW SWITCH
The heater is supplied with a factory installed and wired
safety flow switch. This device will allow the immersion
heating element to energize only when there is sufficient flow
through the unit.