John Wood Power Direct Vent (Non-ENERGY STAR qualified models) - Manual (Page 15)

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Before plugging in the water heater, always make sure:
•
The voltage and frequency correspond to that specified
on the water heater wiring diagram.
• The electrical outlet has the proper overload fuse or
breaker protection.
• Fill the tank with water and check all connections for
leaks. Open the nearest hot water faucet and let it run
for 3 minutes to purge the water lines of air and sedi-
ment and to ensure complete filling of the tank. The
electrical power may then be turned on. Verify proper
operation after servicing.
Note: Always reference the wiring diagram for the correct
electrical connections.
Resettable Lockout
The gas control/thermostat can be reset by unplugging the
power cord to remove power and then reinserting the plug
to restore the power. Robertshaw controls will automatically
attempt to reset after a 20 minute wait period. White-
Rodgers Intelli-Vent
TM controls will automatically reset after
a 60 minute wait period. Also see "Troubleshooting Guide".
Figure 14 Wiring Diagram - White-Rodgers Control Figure 13 Robertshaw Wiring Diagram - (Typical)