State Industries 317913-000 manual Two-temperature with mixing valve Pre-heater/booster heater

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2.Two Temperature provides two temperature hot water service by means of a water mixing valve or through a pre-heater/booster heater combination. In the first concept the heater storage tank is maintained at the highest system temperature required (usually at 180°F) and the mixing valve externally produces the 140°F hot water requirement.

The 180°F water in the tank is therefore piped to the water mixing valve for tempering and also sent directly to the dishwasher final rinse.

The pre-heater/booster heater combination provides two temperatures of hot water without the use of a mixing valve. One heater is operated at 140°F to provide general purpose hot water and provide a source of pre-heated water for the booster heater. The booster heater raises the 140°F water to 180°F for the dishwasher final rinse.

CAUTION

STORING WATER AT HIGHER THAN NECESSARY TEMPERATURES RESULTS IN MORE RAPID LIME BUILD UP, MORE CORROSIVE WATER, AND INCREASES THE POSSIBILITY OF CAUSING INJURY TO ANYONE COMING INTO CONTACT WITH THE HOT WATER.

Two-temperature (with mixing valve)

Pre-heater/booster heater

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