33
Drain Plugs
Each drain plug mignt not be visible if
insulation is installed around the piping.
If the water heater will not be used for a long period of time, drain the water.
Drain the water as follows:
To avoid burns, wait until the equipment cools down
before draining the water. The appliance will remain
hot after it is turned off.
High Temperature
CAUTION
Fully open all hot water
fixtures/faucets.
4
Open all drain plugs and drain the water out of
the unit.
1
Close the water supply
valve.
6
Close the gas valve and disconnect
the electrical power supplied to the unit.
2
3
Fully open
all hot water
fixtures/faucets.
Hot water
fixture/faucet
Drainage Using the Remote Controller
2
(1) Turn the power on/off button “On”.
(2) Turn and leave open
the hot water fixtures/
faucets for more than
2 minutes and close.
* If multiple units are being used,
drain two minutes for each unit.
* An 11 Error Code may appear on
the remote controller.
This is not a malfunction of the unit.
Do not turn Power ON/OFF Button OFF.
Manual Draining
Close the water supply
valve and disconnect
the electrical power
supplied to the unit.
3
4
5
When the water is completely drained, replace
all drain plugs and close the hot water fixtures
/
faucets.
5
Open all drain plugs and drain the
water out of the unit.
6
Close the gas valve.
1
When the water is completely drained,
replace all drain plugs and close the
hot water fixtures
/faucets.
Do not touch with wet hands.
Do not touch with wet hands.
Drain water into a bucket to prevent water damage.
(1) button is “OFF”.
(2) Press the button inside the cover,
Select using the buttons.
Press the button.
The "Misc settings" screen appears.
(3) Select using the buttons,
and then press button.
(4) Select "YES" using the buttons,
Press button.
Hot water
fixture/faucet
Hot water
fixture/faucet
(Ex. NC1991-OD)
Summary of Contents for NC1991-DVC
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