11.2 ACCESSORIES NOT INCLUDED IN THE SUPPLY. Baxi DUO-TEC COMPACT E

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11.2  ACCESSORIES NOT INCLUDED IN THE SUPPLY. Baxi DUO-TEC COMPACT E | Manualzz

11.2 ACCESSORIES NOT INCLUDED IN THE SUPPLY

11.2.1 EXTERNAL SENSOR

To connect this accessory, see figure to side (terminals and the instructions supplied with the sensor.

4 5 )

SETTING THE "Kt" CLIMATE CURVE

SIEMENS

QAC34

When the external sensor is connected to the boiler, the electronic board adjusts the flow temperature calculated according to the set pressing

Kt coefficient. Select the required curve by

as indicated in the chart in annex SECTION

E for selecting the most appropriate one (00 to 90).

KEY TO CHART - “SECTION” E

M2

1

2

3

4

5

6

7

8

9

10

CG_2394

Flow temp Outside 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 annex "SECTION" F . Connect the DHW priority sensor NTC to terminals 9-10 on terminal block M2 .

The sensitive element 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.

11.2.3 CONNECTING TO A ZONE SYSTEM

To use this function, install the programmable relay electronic board supplied as an accessory.

KEY TO ELECTRICAL CONNECTIONS (see diagram in annex "SECTION" G at the end of this manual).

Z Zone (1..n) EV Zone electrovalve

R Relay RT Room thermostat

The boiler can manage a zone heating system. The Room Unit (wall-mounted) can be used to control one zone while normal ambient thermostats can be used to control the other zones.

SYSTEM CONNECTIONS

• Connect the zone 1 valve/pump to terminals 1 - 3 of the relay board terminal block inside the boiler control box.

• Connect the Ambient Thermostat contact of the other zones to terminals 1-2 of terminal block M1 (CONNECTING THE

AMBIENT THERMOSTAT section).

Check that parameter P04=02.

Set parameter P10 (SETTING PARAMETERS section).

33 7722016 (03-01/19)

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