1. Indication light (red): when the light is on, it indicates that the
flame detection electronics have shut down the boiler. Boiler reset
is operated through switch no. 16.
2. Indication light (red): when the light is on, it indicates that the
safety thermostat has shut down the burner. The boiler will automa-
tically resume operation by resetting the safety thermostat through
button no. 18.
3. Indication light (green): when the light is on and fixed, it indica-
tes that power is supplied to the flame detection pcb (flame might
still not be present.
4. Indication light (red): when the light is on and fixed, it indicates
that the temperature of the water in the heating system is between
25°C and 35°C.
When the light is blinking, it indicates that the water pressure switch
has detected insufficient water pressure. When operational water
pressure is restored, the water pressure switch will resume boiler
operation and the led will turn off.
5. Indication light (red): when the light is on and fixed, it indicates
that the temperature of the water in the heating system is between
36°C and 45°C.
When the light is blinking, it indicates that the temperature probe
no. 1 (CH flow) is faulty (interrupted or out of range). The burner is
shut down, pumps still operate. As soon as the probe is replaced,
the led will turn off and the boiler will resume operation.
When indication lights no. 4 and no. 5 flash simultaneously, it indi-
cates that the external temperature probe (optional equipment) is
faulty or disconnected. Once the probe is replaced or re-connected,
the lights will turn off.
6. Indication light (red): when the light is on and fixed, it indicates
that the temperature of the water in the heating system is between
46°C and 55°C.
When the light is blinking, it indicates that the connection between
boiler and remote control is interrupted or there are signal passage
difficulties. Once the connection is restored the light will turn off and
the boiler will resume operation.
7. Indication light (red): when the light is on and fixed, it indicates
that the temperature of the water in the heating system is between
56°C and 65°C.
When the light is blinking, it indicates that the temperature probe
no. 2 (water tank) is faulty (interrupted or out of range). The boiler
operates in CH and instantaneous DHW supply mode only. As soon
as the probe is replaced, the boiler will resume operation.
8. Indication light (red): when the light is on and fixed, it indicates
that the temperature of the water in the heating system is between
66°C and 75°C.
When the light is blinking, it indicates that the temperature probe no.
3 (plate heat exchanger) is faulty (interrupted or out of range). The
boiler operates in CH supply mode only. As soon as the probe is
replaced, the boiler will resume operation (including DHW supply).
9. Indication light (red): when the light is on and fixed, it indicates
that the temperature of the water in the heating system is between
76°C and 85°C.
When the light is blinking, it indicates that CH water temperature
has exceeded 85°C.
The led can also be turned on by the flue gas thermostat (BTN boi-
ler model). Reset of the flue gas thermostat is to performed through
button no. 19.
10. Indication light (green): when the light is on and fixed, it indi-
cates that the boiler is operating in CH mode.
11. Boiler mode selector: this selector allows to choose the boiler
mode (please, refer to paragraphs 1.2.2.3. and 1.2.2.4.).
12. DHW supply knob: the knob allows for DHW supply mode
management (please, refer to 1.2.2.3 and 1.2.2.4 paragraph).
13. CH water temperature knob: the knob allows for CH mode
management (please, refer to 1.2.2.3 and 1.2.2.4 paragraph).
14. Water pressure gauge: it shows water pressure in the heating
system.
15. Programmer: the programmer can be set for CH and DHW
supply scheduling (please, refer to 1.2.2.3 and 1.2.2.4 paragraph).
16. Reset button: press the button to restore boiler operation after
shut down due to flame non-detection.
17. Power switch: when the switch is in position I, power is sup-
plied to the boiler and the switch is lit. When the switch is in position
O, power is not supplied to the boiler and the switch light is off.
18. Reset button: press the button to restore boiler operation after
shut down due to safety thermostat intervention.
19. Reset button (BTN model only): press the button to restore
boiler operation after shut down due to flue gas safety thermostat
intervention (BTN boiler model).
In case of malfunction or pressure switch intervention (BTFS boiler
model) the burner is shut down. Boiler operation will resume as
soon as normal pressure range values are restored.
1. INSTRUCTIONS FOR THE USER
1.1 Control panel
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pic. 1
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19 (BTN)
