UK - Manual installation, use and maintenance.
210-0203_Libretto_SX-ind_ATI_2021-02_GB.docx
18
Ed 2021-02
19.
IGNITION AND TEMPERATURE CONTROL
POWER AND CONTROL THERMOSTAT
A. switch
B. control thermostat
C. thermostat safety limiter (manual reset)
D. thermometer
E. bright green light operation
F. reset button
1. 44°
2. 50°
3. 58°
4. 62°
5. 68°
1.
Press the switch in position "I"
2.
Turn the thermostat setting index B on the desired water temperature value
3.
Check that the red light button F lock is turned off. If it is on, this means that the control apparatus is located in a state of
"block". In this case push the same button to unlock the control apparatus. The button's light goes out
4.
After the ignition of the burner, indicated by the green light And, it starts the step of heating water. The burner will operate
until the water temperature set on the thermostat.
From that moment on the generator power cycle. The depression exerted by the operation of the fume extraction fan (under
proper conditions the state of the combustion circuit) ago closes the differential pressure switch contacts, and the control unit
starts the pre ventilation in the combustion chamber (the pre ventilation duration: 30 sec.). At the end of the pre-ventilation
phase they are controlled at the same time the opening of the gas valve and the action of the electrode for the spark ignition of
the burner. When the power of the burner the flame must be detected from the special ionization probe within the safety time
(10 sec), otherwise the control apparatus goes into a locked state. This is reported dell ' switching on of the red light of the
button. This can easily happen in a new plant, where it can still be present air in the gas pipe. In this case, wait about a minute,
unlock the device by pressing the illuminated button and start again a new cycle. Repeat until the residual air has been purged
and the ignition is regular.
SHUTDOWN
To turn off the generator for a short period to rotate the control thermostat knob on the minimum value and press the switch to
position "0".
To turn off the generator for a long time:
turn the thermostat knob on the minimum value
press the switch to position "0"
disconnect the electrical supply to the appliance at the main switch
close the gas shut-off valve.
If it is expected to leave the unit unused for a long period in an environment not heated and with the possibility of
frost, it is advisable to empty it completely.
PREVENTION AGAINST FREEZING
If the machine is switched off and exposed to very low temperatures, it will be necessary to empty the water tank to prevent
freezing risks
