113
Operating the Boiler
Item
Description
5. DHW (zone 1)
Pump
Test the DHW (zone 1)
pump operation.
●
The DHW (zone 1)
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).
6. Zone1 Valve
Output
Test the zone 1 valve
operation.
●
The zone 1 valve is
turned on as soon
as you enter the test
mode.
●
Press the Command
dial (
) to toggle the
valve operation (On ->
Off / Off -> On).
●
This option is available
only when the “Zone
Valve System” is active.
7. Zone2 Valve
Output
Test the zone 2 valve
operation.
●
The zone 2 valve is
turned on as soon
as you enter the test
mode.
●
Press the Command
dial (
) to toggle the
valve operation (On ->
Off / Off -> On).
●
This option is available
only when the “Zone
Valve System” is active.
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).
3. System (zone3)
Pump
Test the system (zone 3)
pump operation.
●
The system (zone 3)
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).
4. Zone2 Pump
Test the zone 2 pump
operation.
●
The zone 2 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).
●
This option is available
only when the “Zone
Pump System” is active.
Summary of Contents for NFB-175H
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