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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°).
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” 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..