ModuLine IV - Thermostat Nefit - Free user manual and instructions

USER MANUAL ModuLine IV Nefit

Instructions for use

External Error Detection – EED

Instructions for use

External Error Detection (EED) 12

This appliance is in conformance with the requirements of the applicable European directives.

Conformity has been substantiated by the proper documents which - together with the declaration of conformity - are filed with the manufacturer.

Technical diagram of a mechanical assembly with numbered components and screwdriver tool

Fig. 2 Wandbevestiging van de EED-module

Aansluiten

Technical diagram of a mechanical assembly with numbered components and screwdriver tool

Abb. 60 - 10 V Charakteristik

Instructions for use External Error Detection (EED)

Function of the EED

● The EED module can be connected to a central heating boiler with a UBA-control.
● The EED module displays a fault message in the event of boiler malfunction.
- The EED module also provides the option of transmitting an external signal by means of a potential-free port (make-and-break contact) in the event of that the appliance malfunctions and in case of a power failure.
● The EED module does not react to malfunctions in external controls connected to the boiler.
● The EED module can be connected to one boiler.

Switch SI "Lock" and "No Lock" (see figure 1)

In the "No Lock" position, a fault message is only displayed in the event of a malfunction in the locking mechanism.

The display on the boiler will flash. This can be reset with the UBA reset button.

The EED module will display a fault message in the "Lock" position in the event:

• of a malfunction in the locking mechanism. This can be reset by means of the UBA reset button.
• that the boiler is not activated within two hours of a heat demand. This malfunction can be reset with the EED reset button. The UBA reset does not influence this.
• that the boiler is blocked five times during these two hours. This malfunction can also be reset with the EED reset button.

LOCK No Loop Error RESET CON 2 CON 1 1 2 1 2 3 4 CON 3 3 2 1 UBA

Fig. 1 Switch "Lock" and "No Lock"

Fitting

The EED module is attached to the wall by two screws. Use the back plate to mark the position of the drill holes. Remove the transparent hood before fitting (see figure 2).

Technical diagram of a mechanical assembly with numbered components and screwdriver tool

Fig. 2 The wall attachment of the EED module

Connecting

The switching unit is connected to the terminal board of the boiler with a four-core cable (see figure 3).

WARNING!

Check UBA screw clamp connections 3 and 4; they must be bridged.

From the EED module to the terminal board
No.	Description Number of the clamp
1. 2	4 VAC 9
2. 0	V 10
3. UBA loop 6
4. UBA loop 5

Table 1 Connecting the four-core cable

graph TD
    A["CON 1"] -->|24VAC OV| B["UBA-LOOP"]
    A --> C["3 4 5 6 9 10 11"]
    A --> D["24 VAC 5 0 VAC 0V 6"]
    style A fill:#f9f,stroke:#333
    style B fill:#ccf,stroke:#333
    style C fill:#cfc,stroke:#333
    style D fill:#fcc,stroke:#333

Fig. 3 Connecting by means of the four-core cable

WARNING!

If the EED module is connected incorrectly, it could damage the EED module and the boiler!

Subject to changes due to technical improvements!

English External Error Detection (EED)

A potential-free port (make-and-break contact) CON3 is provided (see figure 4). This can be used for an electronic fault message.

1 and 2 are for normal operation
3 and 2 break the circuit

Fault message

When the malfunction light flashes at one second intervals, it means that the boiler is malfunctioning.

Press the reset button on the boiler for three seconds. The machine restarts. If it malfunctions immediately, press the reset button again. If it malfunctions again and these malfunctions continue, call your fitter.

● Slow flashing is one second on one second off.
● Rapid flashing is on and off several times a second.

0 - 10 V connection

It is possible to use a non-resident control voltage of 0 - 10V (decent voltage) for controlling the boiler.

Connect to the clamps 1 and 2 of the CON 2, see figure 5.

WARNING!

The external control voltage determines the supply water temperature. This is not affected by the UBA setting. The external control has to be adjusted to limit the supply water temperature. See the instructions with the external control.

LOCK No Loop Error RESET CON 2 CON 1 1 2 1 2 3 4 CON 3 3 2 1 UBA

Fig. 4 External fault message

LOCK No Loop Error RESET CON 2 CON 1 1 2 1 2 3 4 CON 3 3 2 1 UBA

Fig. 50 - 10V connection

Subject to changes due to technical improvements!

Voltage Temperature supply water
0,6 V ± 15 °C boiler on
0,5 V	± 14 °C boiler off
5,0 V	± 50 °C
10,0 V	± 90 °C maximum

See for more information figure 6.

Fig. 60 - 10 V charakteristik

Malfunction light "No Loop"	Malfunction light "Error"	Type of malfunction Repairing the malfunction
Off Fast flashing Malfunction in the EED module Call the fitter
Off	Slow flashing	Blocking or locking malfunction in the boiler or activated hot water tank
On	Off	EED attempting to re-establish contact
On	Slow flashing	No loop between EED and boiler

Table 2 Description of malfunctions

Subject to changes due to technical improvements!

Technical diagram of a mechanical assembly with numbered components and screwdriver tool

Technical diagram of a mechanical assembly with numbered components and screwdriver tool

Fig. 60 - 10 V caratteristiche

Spínač SI "Lock" a "No Lock" (→ obr. 1)

Obr. 1 Spínač "Lock" a "No Lock"

Technical diagram of a mechanical assembly with numbered components and screwdriver for identification

Obr. 6 Charakteristika 0 - 10 V

Prepínač SI "Lock" a "No Lock" (→ obr. 1)

Technical diagram of a mechanical assembly with numbered components and screwdriver, showing exploded view and assembly steps.

Obr. 2 Pripevnenie modulu EED na stenu

Pripojenie

Warning sign with exclamation mark inside a triangle

POZOR:

Obr. 6 Charakteristika 0 - 10 V