11
Initial Operation
Before the first use of your water heater, make the following preparations.
Follow steps
1 through 4
.
1
Open the water supply valve.
Open a hot water fixture to confirm that
water is available, and then close the
fixture again.
3
Open the gas supply valve.
Hot water fixture
2
Plug into power.
CLOSED
4
OPEN
Do not touch with wet hands.
(Ex. NRC661-DV)
Please check the following when you use the water heater for the first time after the installation.
Usually, the hot water is supplied by opening the hot water if gas, water, and electric power are
supplied (if there is a remote controller, it should be turned ON).