State Water Heaters SBD71120NE Installation Operation & Maintenance page 19

ONE OR TWO TEMPERATURE - ONE HEATER, HIGH TEMPERATURE
HEATER WITH MIXING VALVE AND RECIRCULATED SANITIZING LOOP
* PIPE RELIEF VALVE TO OPEN DRAIN.
INSTALL IN ACCORDANCE WITH LOCAL CODES.
CIRCULATING RETURN LINE CONNECTIONS.
- TEMPERED WATER LOOP, IF USED, CONNECT
TO POINT "R".
- STORED TEMPERATURE WATER LOOP, IF USED,
CONNECT TO COLD WATER INLET.
CAUTION: IF BUILDING COLD WATER SUPPLY HAS A BACKFLOW
PREVENTER, CHECK VALVE OR WATER METER WITH CHECK VALVE.
PROVISIONS FOR THERMAL EXPANSION OF WATER IN THE HOT
WATER SYSTEM MUST BE PROVIDED.
STORAGE WITH OR WITHOUT RECIRCULATION
HEATER WITH OR WITHOUT MIXING VALVE
NOTE 1: TOGGLE SWITCH CONTROLS 180°F (82°C)
WATER CIRCULATION. INSTALL ON OR CLOSE
TO DISHWASHING MACHINE. TOGGLE SWITCH
MUST BE CLOSED (ON) DURING THE RINSE
OPERATION AND OPEN (OFF) WHEN
DISHWASHER IS NOT OPERATING OR WHEN
ON LONG STANDBY.
NOTE 2:
NOTE 3:
19
DANGER
TEMPERATURE SETTING SHOULD NOT
EXCEED SAFE USE TEMPERATURE AT
FIXTURES. SEE WATER TEMPERATURE
CONTROL WARNING ON PAGE 27. IF HIGHER
PREHEAT TEMPERATURES ARE NECESSARY
TO OBTAIN ADEQUATE BOOSTER OUTPUT,
ADD AN ANTI-SCALD VALVE FOR HOT WATER
SUPPLIED TO FIXTURES.
INSTALL LINE TEMPERATURE CONTROL
IN AN UNINSULATED TEE BEYOND THE
DISHWASHING MACHINE TAKEOFF IN
THE SANITIZING LOOP. CONTROL
SHOULD BE SET AT 185°F (85°C).
ADJUST PLUG COCK SO THE SANITIZING
LOOP FLOW RATE DOES NOT CAUSE
UNNECESSARY TURBULENCE IN THE
TANK.