A.O. Smith COF-199 manual Inset B

TWO TEMPERTURE - TWO HEATERS HIGH TEMPERATURE STORAGE

WITH OR WITHOUT RECIRCULATION

DANGER:

TEMPERATURE SETTING SHOULD NOT EXCEED SAFE TEMPERATURES AT FIXTURES. SEE WATER TEMPERATURE CONTROL WARNING ON PAGE 11. IF HIGHER PREHEAT TEMPERATURES ARE NECESSARY TO OBTAIN ADEQUATE BOOSTER OUTPUT, ADD AN ANTI-SCALD VALVE FOR HOT WATER SUPPLIED TO FIXTURES.

* PIPE RELIEF VALVE TO OPEN DRAIN

NOTE: IF TEMPERED WATER IS RECIRCULATED, RETURN LINE SHOULD BE CONNECTED AT POINT "A"

FOR MULTIPLE HEATER INSTALLATION SEE MANIFOLD KIT SPECIFICATIONS, PAGES 22-23

INSET B

VACUUM RELIEF VALVE

INSTALL PER LOCAL CODES.

INSET A

INSTALL THERMAL EXPANSION TANK IN COLD WATER SUPPLY LINE, IF CHECK VALVE OR PRESSURE REDUCING VALVE IS USED IN SUPPLY.

INSTALL IN ACCORDANCE WITH LOCAL CODES

WIRING DIAGRAM FOR TEMPERED WATER LOOP

(IF USED)

WIRING DIAGRAM FOR 180° LOOP (IF USED)

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