124 Operating the Boiler
11.6.6 Diagnosing the Boiler System
To run a series of test procedures for a system
diagnosis, press the Back button (
) and the Menu
button (
) simultaneously for 3 seconds, and then
select “6. Test Mode”.
Rotate the Command dial (
) to switch between
the test procedures. Press the Command dial (
) to
run a test procedure.
Press the Back button (
) to return to the previous
screen or menu.
Item
Description
1. Fan Motor
Test the fan operation by manually
changing the fan speed.
●
From a stopped state, the fan
speed gradually increases and
reaches the top speed, and then
the fan speed decreases until
the fan stops operating.
●
Rotate the Command dial (
)
to run or stop the fan test.
2. Boiler Pump
Test the boiler pump operation.
●
The boiler pump is turned on
as soon as you enter the test
mode.
●
Press the Command dial (
) to
toggle the pump operation (On
-> Off / Off -> On).
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
2. AHU
Communication
AHU Communication is a
communication feature that can
be used with NFC-H boilers.
AHU has an RS-485
communication function. Its
communication protocol has to
match the NPE communication
protocol. Refer to “3.6.6
for piping diagram.
●
Setting range: Enable or
Disable
●
Default: Disable
Note
●
The connection settings for NaviLink
or the AHU are not available when
a cascade system is applied or the
cascade protocol is set to NR.
●
The AHU connection is compatible
with iFlow Air Handlers only. Contact
iFlow directly for more information.
Summary of Contents for NFC-250/175H
Page 67: ...67 Venting for Combustion Air WARNING The vent installation detector Detectable Undetectable...
Page 149: ...Memo...
Page 150: ......
