NCC300 Owner's Guide

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
4
Open all drain plugs and drain the water out of
the unit.
1
Fully open all hot water
xtures/faucets.
Drainage Using the Remote Controller
2
(1) Turn the power on/off button “On”.
(2) Turn and leave open
 thehotwaterxtures/
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xtures/
faucets.
5
Open all drain plugs and drain the
water out of the unit.
6
Close the gas valve.
1
Close the water supply
valve.
2
When the water is completely drained,
replace all drain plugs and close the
hotwaterxtures/faucets.
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.
6
Close the gas valve and disconnect
the electrical power supplied to the unit.
Do not touch with wet hands.
Fully open all hot water
xtures/faucets.
3
Hot water
xture/faucet
Hot water
xture/faucet
Hot water
xture/faucet
Preventing Damage from Freezing-2
To prevent damage from freezing, the water heater must be plugged into power at all times. If power is unplugged, drain the
water completely from the water heater. Then use an air compressor to remove all water from inside the unit's water piping.
It is recommended that Isolation Valves are installed on the water heater, otherwise the water connections will need to be
removed to drain the unit completely. Freeze damage due to not draining properly will not be covered under warranty.