Brahma 37547005 NDM31 control box

Brahma NDM31 37547005 – gas control units for controlling gas and liquid fuel burners in variable cycle systems. There are versions of automation with manual and electric reset of the accident. Suitable for boilers, air heaters, furnaces and other installations.

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

Safety time (ts): 15 sec

Standby Time (tw): 5 sec

Dimensions: 10.7×8.1×3.6 cm

Construction

The plastic case protects the Brahma NDM31 37547005 controller from damage, dust and dirt. The component installation technology makes the controller compact, and the varistor provides protection against voltage surges.

Electrical connections

• Comply with national requirements and safety standards, such as EN 60335-1/EN 50165, when installing the system.

• Make sure that the phase and zero are connected correctly, as an error can lead to dangerous situations. In case of incorrect connection, the phase-neutral of the controller will switch to manual reset mode after the start-up safety time.

• Carefully check the cable connections before starting the system to avoid damage to the controller and ensure safety.

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

• Keep the distance between the ionization cable and the power/ignition cables.

• Use the ignition cable as short and straight as possible (maximum length 25 kV).