LEGEND
MULTI-FLUE (4 UNITS) WITH HORIZONTAL STORAGE TANK
WARNING: THIS DRAWING SHOWS SUGGESTED
PIPING CONFIGURATION AND OTHER DEVICES;
CHECK WITH LOCAL CODES AND ORDINANCES
FOR ADDITIONAL REQUIREMENTS.
TEMPERATURE & PRESSURE RELIEF VALVE
PRESSURE RELIEF VALVE
CIRCULATING PUMP
TANK TEMPERATURE CONTROL
DRAIN
FULL PORT BALL VALVE
CHECK VALVE
TEMPERATURE GAGE
WATER FLOW SWITCH
| PIPE T&P TO | PIPE T&P TO | PIPE T&P TO |
| OPEN DRAIN | OPEN DRAIN | OPEN DRAIN |
48 |
|
|
|
HEATER | HEATER | HEATER | HEATER |
PIPE T&P TO |
|
|
|
OPEN DRAIN |
|
|
|
FINISHED FLOOR
HOT WATER | PIPE T&P TO |
TO FIXTURES | OPEN DRAIN |
HOT WATER
RETURN
ALTERNATE LOCATION
STORAGE TANK
COLD 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.