Navien NFC-175, Installation & Operation Manual

Page: 98 / 124

98 Operating the Boiler
Item Description
6. Cascade Info.
View the operating status of individual
units in the cascade system.
7. Vent Type Setting
Set the type of ventilation.
●
Default: Common vent
11.4.5 Setting the External Connection (for
NaviLink)
To view and configure the external network connection, press the
Back button ( ) and the Menu button ( ) simultaneously for 3
seconds, and then select “5. External Connection”.
Rotate the Command dial ( ) to switch between the parameters
or to increase/decrease setting values. Press the Command dial
( ) to select a parameter or to confirm after making changes.
Press the Back button ( ) to return to the previous screen or
menu.
Item Description
1. NaviLink Connect
Turn on or turn off the remote
control capabilities via the NaviLink
connection.
●
Setting range: On/Off
●
Default: Off
Press the Back button ( ) to return to the previous screen or
menu.
Item Description
1. Cascade System
Setting
●
To enter the Cascade Main setting
mode, select Start.
●
The setting mode is entered and
the IDs of all boilers that can
communicate with the Main via
the RS485 communication line are
initialized.
●
The boilers whose IDs are initialized
by the Main are set to <Sub setting
mode>, if you press the OK button
for 2 seconds or more, the Main gives
you the ID and it is displayed on the
screen.
●
The Main periodically checks the
RS485 communication, and when
there is an ID request from the Sub,
the ID is sequentially incremented
and added to the Sub (1 to 16).
●
Select OK in the Main to complete
the cascade setting, and the Main
and the assigned Sub IDs will return
to <Normal operation mode> and
turn into CASCADE ON state. At this
time, the Main icon on the Main
panel lights up.
●
If the cascade setting is idle for more
than 1 hour, it returns to <Normal
operation mode> and reverts to
CASCADE OFF state automatically.
2. Cascade System
Removal
Select this option on the Main unit
of a cascade system to end cascade
operation.
●
Enter Cascade system setting mode
to reassign IDs and begin a cascade
system again.
●
If a Sub unit has a network
communication problem, select this
option on the Sub unit to exclude
the individual unit from the cascade
system.
3. Cascade Init-
operation Unit
Set the initial number of activated
boilers.
●
Setting range: 0 – 16
●
Default: 0
4. Cascade Protocol
Set the cascade protocol.
●
NPE or NR
●
Default : NPE
5. Number of Oper-
Unit
The number of units currently
operating in the cascade system.