BRAHMA VM42 TW30S TS 3S Electronic single-stage gas burner controller

Product Dimensions：

This device, manufactured by BRAHMA, serves as the main programmed safety controller for atmospheric or forced-draught gas burners found in applications such as boilers, furnaces, and ovens.

• Core Function: It executes the precise sequence of operations for the burner: pre-purge, ignition, fuel valve control, flame supervision, and safe shutdown (lockout) in the event of flame failure or a system fault.

• Intermittent Operation: It is designed for systems that cycle on and off based on demand, rather than running continuously.

⚙️ Product Specifications (产品参数)

The model designation (VM42 TW30S TS 3S) provides crucial information about its operational timings:

Key Interpretation: The $\text{TW30S}$ means a $\mathbf{30}$-second air Time of pre-purge (Warm-up), and the $\text{TS 3S}$ means a $\mathbf{3}$-second Time of Safety.

✨ Product Advantages (产品优势)

• High Safety Level: The fixed, short 3-second Safety Time (TS) ensures an extremely rapid shutdown and fuel cutoff if the flame is not detected or is lost, minimizing the risk of gas accumulation and explosion.

• Reliable Control: Provides complete, programmed control over the burner start-up sequence, ensuring all steps (pre-purge, ignition) are executed correctly.

• Versatile Flame Monitoring: Supports both common types of flame sensors (Ionization and UV), allowing flexibility based on burner type and application environment.

• Compliance: Meets stringent European safety and performance standards (e.g., EN 298), making it suitable for international use.

⚠️ Cautions (注意事项)

1. Strict Wiring: Must be wired strictly according to the manufacturer's diagram. Incorrect wiring, especially the grounding for the ionization probe, will result in failure to operate or unsafe lockouts.

2. Flame Signal: When using an ionization probe, the minimum required flame current ($\text{nA}$) must be achieved and maintained. Low flame signal will cause nuisance lockouts.

3. Model Consistency: If replacing a unit, ensure the new unit has the identical TW and TS timings to maintain the appliance's original and certified safety cycle.

4. Professional Installation: Installation, commissioning, and maintenance should only be performed by qualified technicians familiar with gas and electrical safety regulations.