LEGEND
MULTI-FLUE (4 UNITS) WITH VERTICAL STORAGE TANK
WARNING: THIS DRAWING SHOWS SUGGESTED PIPING CONFIGURATION AND OTHER DEVICES; CHECK WITH LOCAL CODES AND ORDINANCES FOR ADDITIONAL REQUIREMENTS.
PIPE T&P TO OPEN DRAIN
TEMPERATURE & PRESSURE RELIEF VALVE
PRESSURE RELIEF VALVE
CIRCULATING PUMP
TANK TEMPERATURE CONTROL
DRAIN
HOT WATER
TO FIXTURES
FULL PORT BALL VALVE
CHECK VALVE
TEMPERATURE GAGE
WATER FLOW SWITCH
47 | PIPE T&P TO | PIPE T&P TO | PIPE T&P TO |
OPEN DRAIN | OPEN DRAIN | OPEN DRAIN | |
HEATER | HEATER | HEATER | HEATER |
PIPE T&P TO |
|
|
|
OPEN DRAIN |
|
|
|
FINISHED FLOOR
STORAGE TANK
HOT WATER
RETURN
ALT. COLD WATER
CONNECTIONCOLD WATER SUPPLY
EXPANSION
TANK
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.