External Sensor; External System Management Modules - Baxi LUNA DUO-TEC MP 1.90 Manual De Uso

11.2.2 EXTERNAL SENSOR

To connect this accessory, see figure to side (terminals 4-5)
and the instructions supplied with the sensor.
With the External Sensor connected,
trol panel move the set climate curve Kt in parallel (see chart
in SECTION E and parameter P03 in the table in section 14).
To increase room temperature press +, to decrease press -.
SETTING THE "Kt" CLIMATE CURVE
To set the required kt climate curve, proceed as follows:
• Access the menu as described in section 14.
• Select parameter P03.
• Select the climate curve from among those available, see the curve chart in SECTION E at the end of this manual (the preset
curve is 1.5).
KEY TO CURVE Kt CHART - SECTION E
Flow temp
11.2.3 HEATING SYSTEM PUMP
Install the system pump downline from the hydraulic separator. Choose the pump according to the required system capacity/head
characteristics (see SECTION F).
11.2.4 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 storage boiler pump to terminals 4-5 of the M3 terminal block ( SECTION B). Install
the storage boiler downline from the hydraulic separator. Use the sensor supplied as an accessory and connect it to terminals
9-10 of terminal block M2 ( SECTION B). Make sure that the exchange capacity of the storage boiler coil is appropriate for the
power of the boiler.

EXTERNAL SYSTEM MANAGEMENT MODULES

The boiler can independently manage up to three heating circuits by using external accessories such as room units, remote
controls and external modules (AGU 2.550 and AVS 75). The boiler electronics also comprises a wide range of functions for per-
sonalising and managing various system types. To assure correct system operation, a number (from 1 to 3) must be assigned to
each accessory in order to allow the boiler board to recognise it. Consequently, carefully read the instructions provided with the
accessories.
11.2.5 MIXED ZONES (SECTION F)
A mixed zone can be managed using the AVS75 external module, supplied as an accessory. This accessory can manage: a zone
pump, a mixing valve, a temperature sensor, a limit thermostat and a room thermostat. To connect the components and adjust the
system read the manual provided with the accessory.
11.2.6 BOILERS IN A CASCADE CONNECTION (SECTION F)
The AVS75 external unit, supplied as an accessory, is used to manage a heating system with up to 16 boilers connected in a
cascade arrangement and a possible separate storage boiler providing domestic hot water. This accessory, connected to one of
the cascade boilers, can directly control the circuit components up to a maximum of 3 independent relay outlets, 2 temperature
sensors, 1 high voltage limit thermostat connector and one 1 control input (e.g.: room thermostat). The system also requires an
OCI 345 interface on each boiler comprising in the cascade arrangement. The Remote Control accessory must also be installed
to adjust boiler parameters. To connect the components and adjust the system read the manual provided with the accessory.
11.2.7 SOLAR PLANT (SECTION F)
Use the AGU 2.550 external unit, supplied as an accessory, to manage a solar plant. To connect the plant, see the instructions
supplied with the accessory.
THE HYDRAULIC DIAGRAMS OF THE CASES DESCRIBED CAN BE CONSULTED IN SECTION F AT THE END OF THIS MA-
NUAL
on the boiler con-
Outside temp
31 7104645.02 (1-01/12)