Navien NFC-200 Service Manual

NFC Service Manual 43
Version 1.0
Item Description
14. LWCO Input
Status
LWCO input status
15. Air Handler
Interface Output
Status
Air Handler Interface output status
4.9.3 Setting the Operation Parameters
To set the boiler’s operation parameters, press the Back button
( ) and the Menu button ( ) simultaneously for 3 seconds,
and then select “3. Parameter Settings”.
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.
In the password screen, rotate the Command dial ( ) to change
numbers and places, and press the Command dial (
) to enter
the password.
The factory default password is “1234”.
After entering the parameter setting screen, 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.
4.9.2 Viewing Input and Output Status
To view the boiler’s input and output status, press the Back button
(
) and the Menu button ( ) simultaneously for 3 seconds, and
then select “2. Input/Output Status”.
Rotate the Command dial ( ) to switch between the information
items. Press the Command dial (
) to select an item and view the
information.
Press the Back button (
) to return to the previous screen or
menu.
Item Description
1. SH1 Themostat
Status
Space heating thermostat 1 input
status
2. SH2 Themostat
Status
Space heating thermostat 2 input
status
3. SH3 Themostat
Status
Space heating thermostat 3 input
status
4. Recirc. Input Status
External Recirculation thermostat input
status
5. Boiler Pump Status Boiler pump output status
6. Zone1 Pump Status Zone 1 pump output status
7. Zone2 Pump Status Zone 2 pump output status
8. Zone3 Pump Status Zone 3 pump output status
9. 3 way V/V Status 3 way V/V output status
10. Fill Valve Status AWS V/V output status
11. Ext Recirc. Pump
Status
External Recirculation pump output
status
12. HTL Input Status HTL input status
13. Dual Venturi
Status
Dual Venturi output status

Navien NFC-200 Specifications

General

Brand	Navien
Model	NFC-200
Category	Boiler
Language	English