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NOTES:
1. Preferred piping diagram.
2. The temperature and pressure relief valve setting shall not exceed pressure rating of any component in the system.
3. Service valves are shown for servicing unit. However, local codes shall govern their usage.
MULTI FLUE (2 UNITS) WITH BOOSTER TWO TEMPERATURE
LEGEND
TEMPERATURE & PRESSURE
RELIEF VALVE
PRESSURE RELIEF VALVE
CIRCULATING PUMP
TANK TEMPERATURE CONTROL
DRAIN
FULL PORT BALL VALVE
TEMPERATURE GAGE
WATER FLOW SWITCH
CHECK VALVE
WARNING: THIS DRAWING SHOWS SUGGESTED
PIPING CONFIGURATION AND OTHER DEVICES;
CHECK WITH LOCAL CODES AND ORDINANCES
FOR ADDITIONAL REQUIREMENTS.
EXPANSION
TANK
BOOSTED
WATER
OUTLET
TYPICAL
BOOSTER
HEATER
PRE-HEATER
PRE-HEATER
MUST BE IDENTICAL HEATERS
FINISHED FLOOR
COLD WATER
SUPPLY
HOT OUTLET
AT STORED
TEMPERATURE
BOOSTER RETURN
(IF USED)
HOT WATER
RETURN
PIPE T&P TO
OPEN DRAIN
PIPE T&P TO
OPEN DRAIN
PIPE T&P TO
OPEN DRAIN