Operating the Boiler 49
Item
Description
3. 3 Way Valve
Test the 3 way valve operation.
●
The 3 way valve is turned on
as soon as you enter the test
mode.
●
Press the OK button (
) to
toggle the valve operation
[On (DHW) -> Off (CH)/Off
(CH) -> On (DHW)].
4. Flow control Valve
Test the Flow control Valve
operation. Rotate the valve
from its current position to
fully open (0%), then fully close
(100%) and then back to the
starting position while checking
feedback.
●
Display of the valve close
ratio %
●
Display “FEEDBACK” when
detecting the feedback
5. Mixing valve
Test the mixing valve operation.
Rotate the valve from its
current position the valve to
fully open (0%), then fully close
(100%) and then back to the
starting position while checking
feedback.
●
Display of the valve close
ratio %
●
Display “FEEDBACK” when
detecting the feedback
10.7.4 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 “4. Test Mode”.
Press the Up button (
) or the Down button (
) to switch
between the test procedures. Press the OK button (
) to run a
test procedure.
Note
During the test mode, the boiler stops combustion.
Press the Back button (
) to return to the previous screen or
menu.
Item
Description
1. Fan Motor
Test the fan operation.
From a stopped state, the fan
speed gradually increases and
reaches the maximum speed
at 6500 RPM, and then the fan
speed decreases until the fan
stops operating.
Note
Except for the Power
button (
), the
buttons do not work
during fan motor test
mode.
2. Boiler Pump
Test the boiler pump operation.
On (10 seconds) -> Off (5 seconds)
-> On (10 seconds) for 5 boiler
pump operation cycles
Note
Except for the Power
button (
), the
buttons do not work
during boiler pump
test mode.