Control And Operation Devices - Baxi LUNA3COMFORT Installers And Users Instructions

21. CONTROL AND OPERATION DEVICES

The boiler has been designed in full compliance with European reference standards and in particular is equipped with the following:
This switch allows the burner to switch on provided the exhaust flue duct efficiency is perfect.
In the event of one of the following faults:
The boiler will stay on stand-by and the display shows error code 03E (see section 9).
This device has a sensor positioned on the left section of the flue extraction hood and shuts off the gas flow to the burner if the flue
duct is obstructed or in the event of draught failure.
Under such conditions the boiler is blocked and the display shows 03E error (see section 9).
To relight the main burner immediately, see section 9.
It is forbidden to disenable this safety device
Thanks to a sensor placed on the heating flow, this thermostat interrupts the gas flow to the burner in case the water contained in
the primary circuit has overheated. Under such conditions the boiler is blocked and relighting will only be possible after the cause of
the anomaly has been removed.
See section 9 to RESET normal operating conditions.
It is forbidden to disenable this safety device
The flame sensing electrode, placed on the right of the burner, guarantees safety of operation in case of gas failure or incomplete
interlighting of the burner. The boiler is blocked after 3 relight attempts.
See section 9 to RESET normal operating conditions.
This device enables the main burner only to be switched on if the system pressure is over 0.5 bars.
The electronically-controlled supplementary running of the pump lasts 3 minutes (F17 - Section 20), when the boiler is in the central
heating mode, after the burner has switched off due to a room thermostat or intervention.
The electronic control system keeps the pump operating for 30 seconds in domestic hot water mode when the D.H.W. request has
cut off.
Boilers electronic management includes a "frost protection" function in the central heating system which operates the burner to reach
a heating flow temperature of 30°C when the system heating flow temperature drops below 5 °C.
This function is enabled when the boiler is connected to electrical supply, the gas supply is on and the system pressure is as requi-
red.
If the water inside the primary circuit doesn't circulate, the display shows 25E error (see section 9).
In the event that no heat is required, the pump will automatically start up and operate for one minute during the following 24 hours.
This function is operative when the boiler is powered.
In the case of no heat is request for a period of 24 hours the three way valve carries out a complete commutation.
This function is operative when the boiler is powered.
This device is set to 3 bar and is used for the heating circuit.
The safety valve should be connected to a siphoned drain. Use as a means of draining the heating circuit is strictly prohibited.
Antilegionella function (models 1. 240 Fi - 1. 240 i - 1.310 Fi with D.H.W. storage tank)
The antilegionella function is NOT enable.
To enable the function, set the parameter F21=01 (as described in
the boiler's electronic control system brings the water inside the hot water tank to a temperature above 60°C (the function is only
operational if the water has never exceeded 60°C in the previous 7 days).
Note: domestic hot water is guaranteed even if the NTC sensor is damaged. In this case, the temperature control is carried out by the
boiler flow temperature.
310 Fi - 1-240 Fi - 1.310 Fi)
- 1-240 i)
section
20). When the function is activated, at weekly intervals
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925.220.4 - EN