Brahma 20657621 CE191.4 control box

Brahma CE191.4 is a microprocessor-based controller from the CE series, designed for automatic ignition control, flame monitoring and safe operation of atmospheric gas burners (both with and without a fan) in intermittent (cyclic) mode. The device supports modulating (progressive) burners with a single flame. Applications include: gas heating and combination boilers (domestic and industrial); hot air guns, warm air generators; air heaters, infrared heaters; water heaters, process furnaces; burners from Riello, Baltur, Weishaupt, Lamborghini and other brands. Key feature: electric reset (volatile lockout) The main distinguishing feature of this model is the electric lockout reset. After a safety shutdown (flame loss, ignition failure, etc.), restarting the burner does not require manually pressing a Reset button on the housing. Simply briefly interrupt and then restore power to the unit (break the power supply for a few seconds). This is convenient for systems with remote control where access to the unit is difficult. Timing parameters For article 20657621, the following factory parameters are set (verify on the housing label): Parameter Value Pre‑purge time (tv/tp) 10 seconds Safety time (ts) 10 seconds Waiting time (tw) 10 seconds Important: The CE191.4 model exists in several versions with different timing parameters. For example, article 20658621 has tv/tp = 30 s, ts = 10 s. Before purchasing, always compare the marking on your old unit with the specifications of the new one. Incorrect selection based on pre‑purge time will lead to improper operation or safety lockouts. Main functions and features Fully automatic combustion cycle – The unit manages the sequence: false flame check → pre‑purge (10 s) → ignition → flame monitoring → safe shutdown on flame loss. Ionisation flame control – Flame detection via an ionisation electrode (rectification effect). Response time on flame loss is less than 1 second, meeting EN 298 requirements. Electric lockout reset (volatile lockout) – Restart after a fault is performed by disconnecting and then reapplying power. This is convenient for remote control and eliminates the need for physical access to the unit. Built‑in high‑voltage ignition transformer – No external ignition unit required. Automatic self‑check at each start‑up – Diagnostics of key circuits. Robust housing made of impact‑resistant, self‑extinguishing plastic with IP40 protection, protecting against dust and accidental contact. Mounting in any position (on DIN rail or by screws). High reliability – Controller service life: more than 250,000 switching cycles under maximum rated load. Standards compliance – The device is certified according to European directives and meets EN 298:2003 for automatic gas burner control systems. Technical specifications Parameter Value Model Brahma CE191.4 Article numbers 20657621, 246.124.203 Rated voltage 220–240 V AC, 50/60 Hz Power consumption 7 VA Burner type Atmospheric gas burner (progressive, with or without fan) Operating mode Intermittent (must be stopped at least once every 24 hours) Pre‑purge time (tv/tp) 10 seconds (verify on label) Safety time (ts) 10 seconds (verify on label) Waiting time (tw) 10 seconds (verify on label) Minimum ionisation current 1.2 µA Response time on flame loss 5 µA). Lockout reset – When a safety lockout occurs (controller stops starting the burner, LED lights red), find and eliminate the cause of the fault, then disconnect power for a few seconds and restore it. The unit will restart automatically. Maintenance – Periodically check the condition of the ionisation electrode, its insulation and the gap relative to the burner. Operating mode – The unit is designed for intermittent operation. To maximise service life and safety, the system must be forced to stop at least once every 24 hours. Advantages over alternatives Electric lockout reset – Convenience of remote restart after a fault without physical access to the unit. Optimal timing parameters (10/10/10 s) – Ideal balance between combustion chamber purge time and safety for burners with a moderate combustion volume. Reliability – More than 250,000 cycles, built‑in overvoltage protection. Safety – Electric reset + non‑volatile fault memory meet the highest EN 298 standards. Ease of installation – Built‑in ignition transformer, compact housing, DIN rail mounting. Italian quality – High‑grade components, strict production control. Package contents Brahma CE191.4 burner control unit (art. 20657621) – 1 pc. Quick installation and operation guide (several languages). Note: Ionisation electrode, ignition electrode and connection base are sold separately. Storage conditions and warranty Store in a dry place, protected from direct sunlight, at a temperature between –20 °C and +70 °C. The warranty period is typically 6–12 months from the date of sale (please check with the seller) provided that installation and operating rules are followed. Order codes 20657621 (main Brahma article) 246.124.203 (alternative marking)