User Guide

31
October 2009 | Printed in U.S.A. | © A. O. Smith For Technical Information and Automated Fax Service, call 800-527-1953 or visit www.hotwater.com. AOSCG61170 | PAGE 1 of 1 A. O. Smith Corporation reserves the right to make product changes or improvements without prior notice.
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. The Tank Temperature Control should be wired to and control the pump between the water heater(s) and the storage tank(s). 5. The water heater’s operating thermostat should be set 5 degrees F higher than the Tank Temperature Control.
SINGLE FLUE - (2 UNITS)
LEGEND
TEMPERATURE & PRESSURE RELIEF VALVE PRESSURE RELIEF VALVE CIRCULATING PUMP TANK TEMPERATURE CONTROL DRAIN
FULL PORT BALL VALV
E
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.
FINISHED FLOOR
HOT WATER
TO FIXTURES
HOTCOLDHOT
HOT WATER RETURN FROM FIXTURES
COLD
COLD WATER SUPPLY
EXPANSION TANK
PIPE T&P TO
OPEN DRAIN
PIPE T&P TO
OPEN DRAIN