State Industries GPG-650A - Manual (Page 15)

15
TWO TEMPERATURE - ONE HEATER HIGH TEMPERATURE
WITH OR WITHOUT BUILDING RECIRCULATION
TWO TEMPERATURE - TWO HEATERS HIGH TEMPERATURE
WITH OR WITHOUT BUILDING RECIRCULATION
*PIPE RELIEF VALVE TO OPEN DRAIN
NOTE: IF TEMPERED WATER IS
RECIRCULATED, RETURN LINE
SHOULD BE CONNECTED AT
POINT “A”.
INSTALL IN ACCORDANCE WITH LOCAL
CODES
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.
WIRING DIAGRAM FOR TEMPERED WATER LOOP (IF USED)
CIRCULATING PUMP WIRING DIAGRAM
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 ANTI-SCALD
VALVE FOR HOT WATER SUPPLIED TO
FIXTURES
.