A.O. Smith DSE-120-24 Description, Operation, Installation And Maintenance Manual page 24

Commercial water heaters
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MEDIUM TEMPERATURE - ONE HEATER
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
NECCESARY TO OBTAIN ADEQUATE BOOSTER
OUTPUT, ADD AN ANTI-SCALD VALVE FOR HOT
WATER SUPPLIED TO
FIXTURES..
*PIPE RELIEF VALVE TO OPEN DRAIN.
†TANK TEMPERATURE CONTROL SET AT
DESIRED TEMPERATURE (MAX. 170°). HEATER
THERMOSTAT SET AT LEAST 5° HIGHER.
INSTALL IN ACCORDANCE WITH ALL LOCAL
CODES.
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.
MEDIUM TEMPERATURE - ONE HEATER
HORIZONTAL STORAGE TANK
9

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