Connecting The Ambient Thermostat; Accessories Not Included In The Supply; Special Functions; Initial Ignition - Baxi Luna DUO-TEC series Gebrauchsanleitung Für Den Benutzer Und Installateur

11.1 CONNECTING THE AMBIENT THERMOSTAT

The connections in terminal block M1 are high voltage (230 V). Before making connections, make sure the appliance is di-
sconnected from the power supply. Respect polarity L (LIVE) - N (NEUTRAL).
To connect the Ambient Thermostat to the boiler, proceed as described below:
• switch off the boiler;
• access the terminal block M1;
• remove the jumper from the ends of contacts 1-2 and connect the wires of the Ambient Thermostat;
• switch on the boiler and make sure the Ambient Thermostat works correctly.

11.2 ACCESSORIES NOT INCLUDED IN THE SUPPLY

11.2.1 EXTERNAL SENSOR
To connect this accessory, see figure to side (terminals 4-5)
and the instructions supplied with the sensor.
SETTING THE "Kt" CLIMATE CURVE
When the external sensor is connected to the boiler, the elec-
tronic board adjusts the flow temperature calculated according
to the set Kt coefficient. Select the required curve by pressing
as indicated in the chart in SECTION E for selecting
the most appropriate one (00 to 90).
KEY TO CHART - SECTION E
Flow temp
11.2.2 EXTERNAL STORAGE BOILER
The boiler can be electrically connected to an external storage boiler. A diagram of the hydraulic connection of the external storage
boiler is shown in SECTION F. Connect the DHW priority sensor NTC to terminals 9-10 on terminal block M2. The sensitive ele-
ment of the NTC sensor must be inserted in the special well located on the storage boiler. Make sure that the exchange capacity
of the storage boiler coil is appropriate for the power of the boiler. Adjust DHW temperature (+35°C...+60°C) by pressing
IMPORTANT: set parameter P03 = 05 as described in section 14.

12. SPECIAL FUNCTIONS

12.1 INITIAL IGNITION

When lighting the boiler for the first time perform the following procedure. After electrically powering the boiler the code "000"
appears on the display. This means the appliance is ready for the "initial lighting" procedure.
• Press together and hold down for 6 seconds. "On" appears on the display for 2 seconds followed by code "312" indica-
ting that the "system venting" function is active. This function lasts 10 minutes.
• Afterwards, the boiler switches on, the display shows the code "000" alternating with the % of ignition power and the tempe-
rature value (°C). During this "gas recognition function" phase, that lasts approximately 7 minutes, the type of gas used is
analysed. During this function, assure maximum heat exchange to the heating or DHW system (domestic hot water demand)
in order to prevent the boiler from switching off due to overheating.
• If the boiler runs on natural gas, the display shows nG for approximately 10 seconds. The boiler is now ready for normal ope-
ration. If the display shows LPG, press
factory setting.
• If the boiler runs on propane the display shows LPG. Press
the display shows nG and does not recognise the type of gas used, press
seconds to exit the function and then change parameter P02=01 as described in the "PARAMETER SETTINGS" section of the
boiler instructions manual.
If the venting or gas recognition function is interrupted by a power blackout, start the function again when power is restored
by pressing and
in hydraulic circuit) during the venting function, open the filling tap on the appliance and restore the correct pressure. If the
gas recognition function is interrupted due to a fault (e.g.: E133 no gas) press
least 6 seconds) to restart the function again. If the gas recognition function is interrupted due to overheating, restart the function
by pressing and and holding them down for at least 6 seconds.
The combustion of this appliance has been factory controlled, calibrated and set for operation with NATURAL GAS.
During the Gas Type Control Function, the combustion ratio will increase for a short period of time while the gas type is being esta-
blished.
Outside temp
and together and hold down for at least 4 seconds to exit without changing the
together and holding them down for at least 6 seconds. If the display shows fault E118 (low pressure
for at least 6 seconds to confirm the gas effectively used. If
and
to reset and then press
27
together and hold down for at least 4
and
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.
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