Hubbell Electric Heater Company D Manuel d'utilisateur télécharger pdf (Page 5)

SECTION I - GENERAL DESCRIPTION AND CONSTRUCTION

GENERAL DESCRIPTION

This booklet describes an electric heater designed specifically for use in deionized (DI) water

applications. The complete assembly consists of a type 316L stainless steel storage tank, type 316L

stainless steel immersion electric heating element(s), thermostat, safety relief valve, safety high

temperature cut out, magnetic contactor(s), and any other required electrical operating control.

Optional equipment may be supplied with your unit. Please consult the product drawing for details

specific to your assembly. The unit is factory assembled, insulated, jacketed, wired, tested, and ready

for electrical and plumbing service connections.

CONSTRUCTION

TANK

The storage tank is constructed of type 316L stainless steel for maximum tank longevity. The tank is

formed by all welded construction and is designed for a maximum allowable working pressure of 150

psi (300 psi TP). As an optional, the tank may be supplied with a passivated / electropolished finish.

TANK CONNECTIONS

The heater is supplied with separate connections for the cold water inlet and the hot water outlet. Water

entering the cold water inlet is deflected by means of a baffle within the tank. A ¾-inch FNPT

connection is provided for mounting a combination safety temperature and pressure relief valve. An

overflow line should be utilized from the relief valve outlet to a floor drain. See drawing for locations

and sizes.

HEATING ELEMENT

The water heater is supplied with an electric immersion heating element assembly(s), composed of type

316L stainless steel sheathed elements that are welded into a stainless steel flange. Each assembly is

fastened to a corresponding tank flange using a Teflon gasket and four (4) 3/8-16 x 1-inch long hex

head steel bolts and nuts. See drawing for voltage and power ratings.

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Hubbell Electric Heater Company D Manuel d'utilisateur Page 5