TECHNICAL AND FUNCTIONAL CHARACTERISTICS • Low NOx and CO emissions gas burner compliant with European standard EN676 “Class III”. • Single stage operation (on/off). • Exhaust gas recycling blast-pipe able to achieve very low pollutant emissions, particularly with regard to nitrous oxides (NOx). • Maintenance facilitated by the fact that the mixing unit can be removed without having to remove the burner from the boiler. • Manual air flow adjustment. • Gas regulation by means of a two-stage working valve that is electromagnetically driven. • Possibility to chose gas train with valve tightness control. • Gas train exit is possible either from the top or from the bottom. • Equipped with one 7-pole connector, one flange and one insulating seal for boiler fastening. CONSTRUCTION CHARACTERISTICS Conform to: Gas Directive 90/396/CEE E.M.C. Directive 89/336/CEE L.V. Directive 73/23/CEE Reference standard: EN676 The burner consists of: • 7 poles plug for the auxiliary feeding and • Air intake with butterfly gate for the for the thermostatic connection. regulation of the air combusting flow • Prepared for microamperometer rate. connection with ionisation cable. • Sliding boiler coupling flange to adapt the • Electrical protection rating IP40. head protrusion to the various types of boilers. To be ordered separately: • Air pressure switch to ensure the presence • Gas train including safety and 1°/2° stage of combustion air. working valve that is electromagnetically • Flame detection by ionisation electrode. driven, minimum pressure gauge, • Automatic control and command pressure adjuster and gas filter. equipment for the burner, compliant with European standard EN298. • Intelligent connectors for burner/train (error proof). Electrical supply Accessories available on request Descrizione Euro 97980054 Soundproof burner cover (see page 247) Boiler coupling kit – 7 pin plug 6 12) Valve tightness control not required by EN676. CTV) Gas train with Valve Tightness Control. *) Minimum gas train inlet pressure needed to obtain maximum burner power with a combustion chamber backpressure of zero. **) Maximum gas inlet pressure at pressure regulator in CE version, at gas train for EXP version. Net calorific value at reference conditions of 0°C, 1013mbar: Natural gas HI 35,8MJ/m3 = 8550 kcal/m3 LPG HI 92MJ/m3 = 22000 kcal/m3

Burner/gas train match CE gas train version complies with EN676, EXP gas train version is for extra-European markets Gas type Curve on Execution P.Max** graph mbar Burner model P.Min* mbar Regulator with incorporated filter Part no. Included Included Included Included Included Included Included Included Included Included Included Included Included Included Included Included – Regulator with incorporated filter Part no. Valve tightness control kit Part no. Burner/gas train adapter Part no. Included Included Burner/gas train adapter Part no. Valve tightness control kit Part no. To choose the correct...