Unigas HTP2000 Installation Manual page 27

Once the throttle valve is completely opened, acting on the pressure stabiliser of the valves group, adjust the gas flow rate in the high
flame stage as to meet the values requested by the boiler/utilisation:
Start-up procedure
1 Turn the burner on.
2 the LMV control box starts the system test cycle: the AZL display shows the System Test message; at the end of the test, it shows
the main page and the system stops (the safety chain is open) waiting for the startup enabling signal (standby - Program phase no.
12)
3 check the fan motor rotation (see related paragraph).
4 make the safety chain enabling the system to start up
5 the combustion cycle starts: the system will show the operating stages
- Prepurging (program phase no.30)
- Driving to ignition position (program phase no.36)
- Ignition position (program phase no.38)
- Fuel (the fuel solenoid valves open)
- Flame (the flame lights up)
- Driving to low flame (the actuator drives to low flame).
NOTE: the C and A, on the .
Once the ignition cycle ends, the main page is shown:
Set point: temperature set-point
Act value: actual temperature value
Load: load percentage (burner output)
Flame: percentage of flame detection current.
By pressing the ENTER key the display shows the second page:
Fuel: it shows (in degrees) the fuel actuator position.
Air: it shows (in degrees) the air actuator position.
Ax1..3: auxiliaries.
VSD: % value on the inverter maximum frequency
O2: oxygen percentage
Ld: load percentage (burner output).
Press the ENTER key to go back to the main page.
To access the main menu, from the main page, press the ESC key tiwce:
Setpoint
Act.value
Fuel
Standby
Main page
Setpoint
Act.value
Load
Flame
Main page
Fuel 0.0
Ax
Ax
Ax
Second page
27
80°C
78°C
GAS
12
80°C
78°C
24%
60%
Air 1.8
VSD 0.0
O2
Ld. 0.0
PART III: OPERATION