Navien NPE-180A2 Installation Manual page 106

7.5.4 Setting the Special Operation
Mode
1. Press and hold the Menu button (
Back button ( ) simultaneously for 3 seconds
and then select 4. Special Operations.
2. Press the Up button (
( ) to switch between the special operation
modes. Press the OK button (
parameter or to run a special operation mode.
Item
1. Normal
2. 1 MIN
st
3. 1 MAX
st
4. 2 MIN
nd
5. 2 MAX
nd
106 Operating the Water Heater
) and the
) or the Down button
) to select a
Description
Set the water heater to
run in the normal mode.
Set the water heater
to run in the 1-stage
minimum operation
mode.
Set the water heater
to run in the 1-stage
maximum operation
mode.
Set the water heater
to run in the 2-stage
minimum operation
mode.
Set the water heater
to run in the 2-stage
maximum operation
mode.
3. Press the Back button (
previous screen or menu.
7.5.5 Operating in Descale Mode
Use of this mode requires a Navien
Note
NPE-A2 Flush Kit. Do not use this mode
when using field-supplied pump &
bucket flush kits.
1. Press the Menu button (
( ) simultaneously for 3 seconds, and then
select 5. Descale Mode.
2. Press the Up button (
( ) to switch between the descaling time. Press
the OK button ( ) to select a parameter or to
run the descale mode.
Item
Descale Mode
3. Press the Back button (
previous screen or menu.
) to return to the
) and the Back button
) or the Down button
Description
Set the remaining
descaling time displayed
on the front panel. The
END message appears
as the descale mode is
complete.
Setting range: 20 min,
●
40 min, 60 min
Default: 20 min
●
) to return to the