Brahma Relay CM 31 U TW1.5/TS10

MICROFLAT SERIES TYPES C.../U T… X… APPLICATION This range of electronic gas burner control systems is suitable AUTOMATIC GAS BURNER CONTROL for atmospheric gas burners for non-permanent operation with or without fan in the combustion circuit. SYSTEMS FOR GAS BURNERS AND GAS These controls are provided with both non volatile lockout, i.e. BURNING APPLIANCES WITH OR the restart from this condition is only possible by manual WITHOUT FAN reset, and volatile lockout, i.e. the restart from this condition is possible by the interruption and subsequent restoration of the mains supply. The automatic burner control units of this series are suitable for: – combi boilers – heating boilers – hot air generators – radiant heaters – water heaters. Thanks to the design and variety of models, they can also be used for the automation of ovens, cookers, stoves and in gas firing appliances with atmospheric burner in general. FEATURES Table 1 shows the main features of this series. Other important features are: − CE type certification in accordance with Gas Appliance Directive 90/396 and subsequent modifications 93/68 (see table 1); − in compliance with EN 298 (European standard for automatic gas burner flame monitoring and control systems); − flame monitoring based on the rectification property of the flame (ionization); − two independent safety contacts in series on the gas valve output; − electrical service life at max. declared loading > 250.000 operations; − inbuilt ignition device with completely solid state design and high efficiency; − auxiliary contact for low power ignition or main gas valve control for intermittent pilot systems type SELV, therefore suitable to control circuits type SELV - Safety Extra Low Voltage, e.g. 24V (see Table 1); − volatile lockout in case of flame loss in running condition for type CE12U NR. 4044_r03 1/6  BURNER OPTIONS Max. length of the cables of TABLE 1 external components: 1m Internal fuse rating: 3.15 A quick acting volatile lockout due to flame failure in running state External fuse rating: 2 A quick acting Flame monitoring: The flame detection device makes use of the rectification property of the flame (ionization). This device is not provided classification code according to 298 (2) with any protection impedance, therefore the flame detection electrode is not safe against electric shock. molex – Minimum ionization current: 1.2µA electrical reset from lockout safety thermostat provision on request: 0.5µA atmospheric without fan manual reset from lockout – Recommended ionization current: 3 ÷ 5 times the atmospheric with fan minimum ionization current – Max. length of the cable: 1m auxiliary contact – Minimum insulation resistance of cable and flame single flame double flame stelvio - stocko detection device to earth: ≥ 50MΩ Max. stray capacitance of the detection probe: ≤ 1nF CE PIN Max. short circuit current: < 200µA AC Ignition:…