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MEDIUM TEMPERATURE - THREE HEATERS HORIZONTAL STORAGE TANK
MEDIUM TEMPERATURE - THREE HEATERS VERTICAL STORAGE TANK
* PIPE RELIEF VALVE TO OPEN DRAIN
† TANK TEMPERATURE CONTROL SET
AT DESIRED TEMPERATURE (MAX. 170°F
(76.6°C). HEATER THERMOSTAT SET AT
LEAST 5° HIGHER.
CAUTION: IF BUILDING COLD WATER
SUPPLY HAS A BACK-FLOW
PREVENTER, CHECK VALVE OR WATER
METER WITH CHECK VALVE,
PROVISIONS FOR THERMAL
EXPANSION OF WATER IN THE HOT
WATER SYSTEM MUST BE PROVIDED.
INSTALL IN ACCORDANCE WITH ALL
LOCAL CODES.
NOTE:
BRANCH PIPING TO ALL HEATERS
MUST BE SAME SIZE AND LENGTH FOR
EQUAL FLOW. THESE BRANCHES MAY
BE SIZED UP TO 1 1/4” (31.75 mm) SO
THAT CROSS SECTIONAL AREAS OF ALL
INLETS AND OUTLETS AT LEAST EQUAL
AREA OF THEIR RESPECTIVE MAIN
PIPING.
REVERSE RETURN PIPING SHOWN.
DANGER:
TEMPERATURE SETTING SHOULD NOT EXCEED SAFE USE TEMPERATURE
AT FIXTURES. SEE WATER TEMPERATURE CONTROL WARNING ON PAGES
17 & 18. IF HIGHER PREHEAT TEMPERATURES ARE NECESSARY TO
OBTAIN ADEQUATE BOOSTER OUTPUT, ADD AN ANTI-SCALD VALVE FOR
HOT WATER SUPPLIED TO FIXTURES..