Brahma 37542004 NDM31 control box

The Brahma NDM31 37542004 controllers are designed to control atmospheric gas and liquid fuel burners in installations with a non-constant operation cycle.

Brahma NDM31 37542004 gas control units have versions with both manual reset and electric: in the first case, the burner can be restarted only by pressing the reset button by the operator; in the second case, to restart the burner, it is necessary to disconnect and connect the main power supply.

Suitable for the following installations:

• Combined boilers
• Heating boilers
• Steam boilers
• Air heaters
• IR heaters
• Convectors
• Water heaters
• Furnaces
• Block burners

Specifications

• EC certificate (CE PIN 0694BP0610) in accordance with Directives 90/396 and 93/68 on gas equipment;

• Comply with EN 298 (European standard for gas systems and flame detectors);

• Comply with EN 230:2005 (European standard for liquid fuel systems and flame detectors);

• Two independent safety contacts for gas valve control;

• The ability to control Brahma valves of the VCM0x type;

• The ability to connect a custom module;

• Direct or pilot ignition.

Technical information

Rated supply voltage 220-240V, 50-60 Hz

Power Consumption: 30 VA

Temperature: -20 °C – +70 °C

Humidity: Max. 95% at +40 °C

Protection: IP00

Built-in fuse: 4 A

External fuse: 3.15 A

Maximum weight: about 200 g.

Maximum cable length of external components:

– Room thermostat: 20 m

– Remote alarm: 20 m

– Ignition device (high voltage): 2 m

– Other cables: 1 m

The presence of a base: no

Dimensions: 10.7×8.1×3.6 cm

Construction

1. Body Material: Made of plastic.

2. Protective functions: Protects the controller from mechanical damage, dust and dirt under operating conditions.

3. Production technology: Special technology for the production and surface installation of electronic components.

4. Compact: Allows you to keep the minimum dimensions of the controller.

5. Varistor: Protects the controller from power supply voltage fluctuations.

Electrical connections

• The installation must comply with national requirements and European standards (e.g. EN 60335-1/ EN 50165) for electrical safety;

• The phase and neutral must be connected correctly, an error can lead to dangerous situations. In case of non-compliance with the phase-neutral, the controller will operate in manual reset mode at the end of the start-up safety time;

• Check the cable connections carefully before starting the system. An incorrect connection can damage the controller and compromise security;

• Check the grounding of the controller, the metal housing of the burner and the grounding of the main power supply;

• Ensure the distance between the ionization cable and the power cables/ignition cables;

• Use the shortest and straightest ignition cable possible (max length 25kV).