Baxi LUNA HT 1.280, Installation, Operation And Maintenance Manual

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- Status output K35 : The status output will be operated when a command exists
from the controller to the firing automation. If there is a disturbance, which pre-
vents the firing automation to operate, the status output will be switched off.
- Status information K36 : The output is set, when the burner operates.
- Flue gas damper K37 : This function activates the flue gas damper control. If the
flue gas damper control is activated the burner will only start operating, when
the flue gas damper is open.
- Fan shutdown K38 : This output serves to stop the fan. The output is activated,
when the fan is needed; otherwise it is not activated. The fan should be swit-
ched off as often as possible, to minimize the total energy consumption of hte
system.
Sensor inputs BX1/BX2/BX3
(5930 - 5932)
Functions in addition to the basic functions will be possible by configuring the
sensor inputs.
- None : Sensor inputs deactivated.
- DHW sensor B31 : second DHW sensor, which is used for through loading of the
legionella function.
- Collector sensor B6 : first solar collector sensor in a collector field.
- DHW circulation sensor B39 : Sensor for return line of DHW circulation.
- Buffer st tank sensor B4 : lower buffer storage tank sensor.
- Buffer st tank sensor B41 : centre buffer sensor.
- Flue gas temp sensor B8 : Flue gas temp sensor for the alarmfunction.
- Common flow sensor B10 : common flow sensor for boiler cascades.
- Solid fuel boiler sensor B22 : Sensor for the acquisition of the temperature of a
solid fuel boiler.
- DHW charging sensor B36 : DHW sensor for DHW charging system.
- Buffer st tank sensor : upper buffer storage tank sensor.
- Common return sensor B73 : Return sensor for the function return diversion.
- Cascade return sensor B70 : common return sensor for boiler cascades.
- Swimming pool sensor B13 : Sensor for measurement of swimming pool temp.
- Solar flow sensor B63 : this sensor is required for the solar usage measurement.
- Solar return sensor B64 : this sensor is required for the solar usage measure-
ment.
Function inputs H1/H4/H5/
H2
(5950, 5970, 5977)
- None : No function.
- Optg mode change HCs+DHW : Changeover of the operating modes of the hea-
ting circuits to reduced operation or protecting operation (program numbers
900, 1200, 1500) and locking of domestic hot water charging in case of closed
contact at H1/H4/H5/H2.
- Optg mode changeover HC1 to HC3 : Changeover of operating modes of the hea-
ting circuits to protective operation or reduced operation.
Locking of domestic hot water charging is only possible under the setting Optg
mode change HCs+DHW .
Programming
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