On May 27, 11:47*am, "james" wrote:
I want to turn off my water main to repair an outside faucet. Do I have to
shutdown the water heater first? And after I turn the water back on, do I
have to do something to "reboot" the water heater?

No need to shutdown the water heater, as long as your not draining it.
Most times when you shut off the water main, water will remain in the
HW heater tank.