MEDIUM TEMPERATURE - THREE HEATERS VERTICAL STORAGE TANK
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
MEDIUM TEMPERATURE - THREE HEATERS HORIZONTAL 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
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 SECTIONALAREAS OFALL
INLETSAND OUTLETS AT LEAST EQUAL
AREA OF THEIR RESPECTIVE MAIN
PIPING.
REVERSE RETURN PIPING SHOWN.
11
