A.O. Smith DB/DW-720-1810 User Manual

Page 16

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NOTES:

1. BUILDING TEMPERATURE CONTROLS SUPPLY ELECTRIC POWER TO BUILDING CIRCULATOR.
2. MAIN FLOW SWITCH PROVES MAIN WATER FLOW BEFORE ENERGIZING, SEQUENCING AND

RESETTING CONTROLS.

3. OUTDOOR THERMOSTAT REQUIRED IF BUILDING CONTROLS DO NOT PROVIDE AUTOMATIC

SHUT-DOWN OF RESET CONTROLS DURING WARM WEATHER.

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