TWO TEMPERATURE - THREE HEATERS (TWO
WITH OR WITHOUT BUILDING RECIRCULATION
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.
FOR MULTIPLE HEATER INSTALLATION SEE
MANIFOLD KIT SPECIFICATIONS, PAGE 18.
DANGER
TEMPERATURE SETTING SHOULD NOT EXCEED SAFE TEMPERATURE AT FIXTURES. SEE WATER TEMPERATURE CONTROL WARNING ON PAGE 23. IF HIGHER PREHEAT TEMPERATURES ARE NECESSARY TO OBTAIN ADEQUATE BOOSTER OUTPUT, ADD AN
TWO TEMPERATURE - TWO HEATERS (ONE
WITH OR WITHOUT BUILDING RECIRCULATION
*PIPE RELIEF VALVE TO OPEN DRAIN.
**140°F TO 150°F SHOULD BE MAXIMUM WATER TEMPERATURE MAINTAINED IN THE
120°F SHOULD BE THE MINIMUM TEMPERATURE OF WATER IN THE PRE- HEATERS.
CIRCULATING PUMP WIRING DIAGRAM
CONNECT CIRCULATING LINE FROM FIXTURES,
IF USED, TO COLD WATER SUPPLY LINE OF PRE-
HEATER.
CONNECT CIRCULATING LINE OF 180°F OR BOOSTED
WATER, IF USED, TO INLET WATER LINE TO BOOSTER.
INSTALL IN ACCORDANCE WITH LOCAL CODES.
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