Noritz NR50-OD - Draining Water for Maintenance or Freeze Prevention; Drainage Using Remote Controller; Manual Draining Procedure

93
Draining the Water for Maintenance or for Freeze Prevention :
To avoid burns, wait until the equipment cools down
before draining the water. The appliance will remain
hot after it is turned o.
High Temperature
CAUTION
Fully open all hot water xtures.
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 xtures.
Fixture
Drainage Using the Remote Controller (NCC/NRC/841/842 series only)
2
(1) Turn the power on/o button “On”.
(2) Turn and leave open
the hot water xtures
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.
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 xtures.
Fixture
Fixture
(Ex. 120°F)
Do not touch with wet hands.
Drain Plugs
Do not touch with wet hands.
Drain water into a bucket to prevent water damage.
(1) Turn the power on/o
button “o”.
(2)
Press the ow meter alarm set
button for about two seconds
until the alarm sounds.
The maximum hot water
temperature will ash.
(3) Press the ow meter alarm
set button again.
(4) Press the setting button
marked “ “.
The display
will change from "oF" to "on"
after the button is pushed.
(ex. NCC199-SV/N-0841MC)