Navien NFC-175 Installation & Operation Manual page 98

Nfc condensing combi-boilers
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Press the Back button (
menu.
Item
1. Cascade System
Setting
2. Cascade System
Removal
3. Cascade Init-
operation Unit
4. Cascade Protocol
5. Number of Oper-
Unit
98
Operating the Boiler
) to return to the previous screen or
Description
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.
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.
Set the initial number of activated
boilers.
Setting range: 0 – 16
Default: 0
Set the cascade protocol.
NPE or NR
Default : NPE
The number of units currently
operating in the cascade system.
Item
View the operating status of individual
6. Cascade Info.
units in the cascade system.
Set the type of ventilation.
7. Vent Type Setting
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 (
seconds, and then select "5. External Connection".
Rotate the Command dial (
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
Turn on or turn off the remote
control capabilities via the NaviLink
connection.
1. NaviLink Connect
Setting range: On/Off
Default: Off
Description
) simultaneously for 3
) to switch between the parameters
Description

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