INSTALLATION DIAGRAMS-SIDE INLET/OUTLET USAGE
A listed temperature and pressure relief valve of adequate capacity is installed on the heater. The locations shown in the installation diagrams on the following pages are typical.
The discharge opening of the temperature and pressure relief valve must be piped to an open drain and should not be subject to freezing conditions. DO NOT REDUCE, BLOCK OR PLUG THE DISCHARGE OPENING OF THE VALVE.
TWO TEMPERATURE - TWO HEATERS, ONE PRE-HEATER/ONE - BOOSTER HEATER
WITH OR WITHOUT BUILDING RECIRCULATION
DANGER
TEMPERATURE SETTING SHOULD NOT EXCEED SAFE USE
TEMPERATURE AT FIXTURES. SEE WATER TEMPERATURE CONTROL
WARNING ON PAGE 25. IF HIGHER PREHEAT TEMPERATURES ARE
NECESSARY TO OBTAIN ADEQUATE BOOSTER OUTPUT,ADD ANANTI-
SCALD VALVE FOR HOT WATER SUPPLIED TO FIXTURES.
CIRCULATING RETURN LINE CONNECTION
-FROM FIXTURE LOOP, IF USED, CONNECT TO
-FROM BOOSTED TEMPERATURE LOOP, IF USED CONNECT TO BOOSTER INLET.
†AVAILABLE FROM A.O. SMITH.
*PIPE RELIEF VALVE TO OPEN DRAIN.
INSTALL IN ACCORDANCE WITH LOCAL CODES.
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