Navien NHB-055 Service Manual page 56

Item
(3) Space Heating
Min Heat Capacity
(4) DHW Min Heat
Capacity
(+) Resetting All
Parameters
(*) Password
Change mode
56 NHB Service Manual
Displaying Space Heat Min Heat Capacity.
Setting range
Space heating min capacity ~ [Space heating max
capacity – 20%]
Displaying DHW Min Heat Capacity.
Setting range
DHW min capacity ~ [DHW max capacity – 20%]
This menu may be used to reset all the parameters set with the boiler. To reset
all parameters back to the default settings:
Press the + or – buttons to change the display "yes"
Press the "Mode" button.
When "No" appears on the display again, press the "mode" button
This menu may be used to set a new password to access the parameter
setting menu.
To set a new password:
1. Move to [*.PSC] and press the "Mode" button. The current password is
displayed, with the first digit flashing.
2. Press the + or – buttons to change numbers.
3. Press the [Diagnostic] button to change places.
4. When you are done setting the password, press the [Mode] button to save
it. The new password is displayed on the front panel for 3 seconds, before
the boiler returns to the parameter setting mode.
NOTE
If you do not press the [Mode] button for 10 seconds after setting a
new password, the new password is automatically saved and [T.PSC] is
displayed on the front panel.
Description
Minimum heat
performance
available of
Minimum heat
performance
available of
Space heating min capacity is 12%
Default
model
DHW min heat capacity is 15%
Default
model
If entering <Parameter Initializing
mode>,
press [+] / [-] button,
or
When entering <Password
Change mode>, the password set
will be displayed.
The 1st Segment of password set
flashes at 500ms intervals.
[*.PSC] initial sign
Display
Version 1.0