A.O. Smith TC-049R3 Service Handbook page 35

RESIDENTIAL GAS AND ELECTRIC WATER HEATER
Residential Electric – continued
A-7 Circuit
•
2 Elements
•
2 Thermostats
•
2 High Limits
•
4 Wire
Four wire circuit for non-simultaneous element operation.
This circuit permits off-peak meter usage and connection to 3 phase supply circuit.
A.O. Smith Water Products Company
©2005
SERVICE HANDBOOK
WIRING DIAGRAM
A-7 – Post 1995
34
*Interrupts power to lower element
during "peak" charges time of day.
Technical Training Department
Ashland City, TN