42
NOTES:
1. Preferred piping diagram.
2. The temperature and pressure relief valve setting shall not exceed pressure rating o f any component in the system.
3. Service valves are shown f or servicing unit. However, local codes shall govern their usage.
MULTI FLUE (2 UNITS) 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.
BOOSTER WATER RETURN
PRE-HEATED
WATER TO
BOOSTER
BOOSTER WATER
TO FIXTURES
HOT WATER
TO FIXTURES
EXPANSION TANK
HOT WATER
RETURN
COLD WATER
SUPPLY
1st HEATER
BOOSTER
HEATER