Navien NCB300-28K, Service Manual

Page: 33 / 108

32 System Details
4.4.7 Accessing Advanced Menu Items
4.4.7.1 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
In the password screen, press the Plus button ( ) or the Minus
button ( ) to change numbers and 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
A. Supply MIN Set-point
Set the central heating supply
minimum temperature.
●
Setting range: 25°C – [MAX
Set- point – 20°C]
●
Default: 40°C
Item Description
G. Model Capacity Model capacity (kW)
H. Gas Type
Fuel Type
(LNG G20/LPG G30/LPG G31)
I. Elapse time after install Elapsed time since installation
J. Num of CH Operation
View the number of times
the central heating operation
function has been used.
K. Num of DHW Operation
View the number of times the
DHW operation function has
been used.
L. Num of Preheat
Operation
View the number of times the
preheat operation function has
been used.
M. Flame Loss – Num of
time
Number of times a flame loss/
misfire has occurred
N. 2nd Ignition – Num of
time
Number of second ignition
attempts
O. 3rd Ignition – Num of
time
Number of third ignition
attempts
P. 4th Ignition – Num of
time
Number of fourth ignition
attempts
Q 5th Ignition – Num of
time
Number of fifth ignition
attempts