Bedienungsanleitung Atmos A45SPT (Seite 18 von 72) (Englisch)

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18-EN

Operation and Maintenance Manual - EN

12. Connection of the boiler and burner to the electric mains

Only connect the burner to the 230 V, 50 Hz electric mains via the boiler with a mains cable

without a plug so that the conductors (L, N) should not be interchanged. The mains supply must be

replaced with the same type by a repair organization. The boiler must be positioned in such a way

that the connector on the burner can be within the operator’s reach (in accordance with EN 60335-1).

CAUTION - Boilers with a burner may only be connected by a qualified person in accordance

with all the relevant valid regulations of the particular country while great attention must be

paid to safe earthing of the boiler.

After the installation of the burner on the boiler the technician must connect the burner and

subsequently the entire boiler to the electric mains in accordance with the attached wiring

diagram (pages 19 - 24).

Connection:

Between the burner and boiler a six-wire cable is newly used that is connected with one end to

the burner with a 6-pin connector (part of the burner) and the other end with a 6-pin connector to the

boiler.

The meaning of the conductors is as follows:

•

Black – phase L1 (230V, 50Hz) – With the main switch of the boiler on the black conductor is

permanently live (independently of the control thermostat of the boiler). It is the supply voltage of

the burner. This phase must be fuse protected via the safety thermostat of the boiler (95 - 110 °C).

• Brown – phase L2 (230V, 50Hz) – The brown conductor is controlled by the control or another

thermostat on the boiler panel. It brings the phase, impulse for the burner start. It is perceived as

the starting (ignition) and shutdown signal. This phase must also be fuse protected via the safety

thermostat of the boiler. (95 – 110 °C).

• Grey - reserve R (L3) (230V/50Hz) - The grey conductor is connected to the free place on the

boiler terminal board in the case of the boiler version with the 4-pin connector or directly to the

5-pin connector on the boiler. It serves as a reserve conductor for various functions of the boiler,

characterized with the S6 parameter. If you do not use the reserve function, connect the supply

cable directly to the connector, not connecting or cutting off the grey cable

•

Red - reserve R2 (230V/50Hz) - the red conductor is connected directly to the 6-pin connector on

the boiler. It serves as the second free reserve for various functions of the boiler, characterized with

the S14 parameter. If you do not use the reserve function, do not connect or cut off the red cable.

• Blue - N – Neutral – The blue conductor is connected to the neutral conductor.

• Yellow and green - PE – Protective Earthing – The yellow and green conductor is connected to

the earth.

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