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AOS
STORAGE TANK
HOT WATER
TO FIXTURES
FINISHED FLOOR
EXPANSION
TANK
ALTERNATE CONNECTION
COLD WATER
SUPPLY
SYSTEM
RETURN
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.
4. A. O. Smith piping method is based on 50 equivalent feet of piping. Boiler placement shall be as close as practical to the
storage tank. Applications in excess of these recommendations shall require a licensed engineer for design assistance.
XP BOILERS 1000–3400 - ONE BOILER/VERTICAL STORAGE TANK RECOVERY
SYSTEM (ONE 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.
MODEL INLET DIA. OUTLET DIA.
XW-1000 2” 2”
XW-1300 2” 2”
XW-1700 2.5” 2.5”
XW-2000 3” 3”
XW-1600 3” 3”
XW-3400 4” 4”
FIGURE 79. HOT WATER SUPPLY BOILER WITH VERTICAL TANK