John Wood SERIES 100 - Manual (Page 29)

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NOTE 1: TOGGLE SWITCH CONTROLS 180°F (82°C) WATER
CIRCULATION. INSTALL ON OR CLOSE TO DISHWASHER. 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: INSTALL LINE TEMPERATURE CONTROL IN AN UNINSULATED
TEE BEYOND THE DISHWASHER TAKEOFF IN THE SANITIZING LOOP.
CONTROL SHOULD BE SET AT 185°F (85°C).
NOTE 3: ADJUST PLUG COCK SO THE SANITIZING LOOP FLOW RATE
DOES NOT CAUSE UNNECESSARY TURBULENCE IN THE TANK.
NOTE 4: IF TEMPERED WATER IS RECIRCULATED, RETURN LINE
SHOULD BE CONNECTED AT POINT A.
DANGER
TEMPERATURE SETTING SHOULD NOT EXCEED SAFE TEMPERATURE
AT FIXTURES. SEE WATER TEMPERATURE CONTROL WARNING ON
PAGE 3. IF HIGHER PREHEAT TEMPERATURES ARE NECESSARY TO
OBTAIN ADEQUATE BOOSTER OUTPUT, ADD AN ANTI-SCALD VALVE
FOR HOT WATER SUPPLIED TO FIXTURES.
CAUTION: IF BUILDING COLD WATER SUPPLY HAS A BACK-FLOW
PREVENTER, CHECK VALVE OR WATER METER WITH CHECK VALVE
PROVISIONS FOR THERMAL EXPANSION OF WATER IN THE HOT
WATER SYSTEM MUST BE PROVIDED.
*PIPE RELIEF VALVE TO OPEN DRAIN
INSTALL IN ACCORDANCE WITH LOCAL CODES
TWO TEMPERATURE - ONE HEATER HIGH TEMPERATURE
WITH RECIRCULATION OF SANITIZING LOOP
CAUTION: IF THE PLUMBING REQUIRES
THE USE OF PIPES WITH DISSIMILAR
MATERIAL (FOR EXAMPLE, STEEL AND
COPPER), USE DIELECTRIC UNIONS TO
PREVENT AN ELECTRO-GALVANIC ACTION
BETWEEN THE PIPING COMPONENTS
WITH DISSIMILAR MATERIALS.