Navien NCB300-28K, Installation & Operation Manual

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54 Operating the Boiler
Press ECO button to enter parameters, ‘PASS’, press ECO again to
get to the 4 digit code password screen.
In the password screen, press the Plus button ( ) or the Minus
button ( ) to change numbers and ‘M’ to go to the next places,
and press the ECO button ( ) to enter the password.
The factory default password is “1234”.
After entering the parameter setting screen, press the Plus
button ( ) or the Minus button ( ) to switch between the
parameters or to increase/decrease setting values. Press the ECO
button ( ) to select a parameter or to confirm after making
changes.
Press the Info button ( ) to return to the previous screen or
menu.
Item Description
1. Supply MIN Set-point
Set the central heating supply
minimum temperature.
●
Setting range: 25°C – [MAX
Set- point – 20°C]
●
Default: 40°C
2. Supply MAX Set-point
Set the central heating supply
maximum temperature.
●
Setting range: [MIN Set-point
+ 20°C] – 90°C
●
Default: 90°C
3. CH Burner Off Diff
Set the temperature range to
turn off central heating.
●
Setting range: 0°C – 30°C
●
Default: 2°C
4. CH Burner On Diff
Set the temperature range to
turn on central heating.
●
Setting range: 1°C – 30°C
●
Default: 3°C
5. Anti Fast Cycling Time*
Set the anti-fast cycling time.
●
Setting range: 0 – 20 min
●
Default: 3 min
6. Freeze protection
Set the pump freeze protection
temperature.
●
Setting range: 6°C – 10°C
●
Default: 10°C
Note
The system
freeze protection
temperature is set
based on the pump
freeze protection
temperature.
Item Description
17. Gas Type
Fuel Type
(LNG G20/LPG G30/LPG G31)
18. Elapse time after install Elapsed time since installation
19. Num of CH Operation
View the number of times
the central heating operation
function has been used.
20. Num of DHW Operation
View the number of times the
DHW operation function has
been used.
21. Num of Preheat
Operation
View the number of times the
preheat operation function has
been used.
22. Flame Loss – Num of
time
Number of times a flame loss/
misfire has occurred
23. 2nd Ignition – Num of
time
Number of second ignition
attempts
24. 3rd Ignition – Num of
time
Number of third ignition
attempts
25. 4th Ignition – Num of
time
Number of fourth ignition
attempts
26. 5th Ignition – Num of
time
Number of fifth ignition
attempts
10.7 Accessing Advanced Menu Items
10.7.1 Setting the Operation Parameters
To Set the boiler’s operation parameters, press the ECO button
( ) and Menu button ( ) simultaneously 5 seconds, and
then select “1. Par”
CAUTION
Parameters must be set by a qualified professional with
an extensive understanding of the boiler system. Setting
parameters improperly may lead to property damage or
injury.
5sec