Energy efficiency class A. Energy efficiency index 105. Nominal heat output . space heating output kW 6.55. water heating output kW 7.55. Maximum operating pressure bar 2. Testing pressure bar 4.0. Water content l 15.50. Thermal discharger . Efficiency % 79.53. CO at 13% O2 % 0.0738. PM emissions at 13% O2 mg/Nm3 36.40. NOx at 13% O2 mg/Nm3 120.66. OGC at 13% O2 mg/Nm3 85.49. Triple value g/s-°C-Pa 10,58-276-12. Fuel mass kg/h 4.31. Dimensions . width mm 755. depth mm 610. height mm 1 310. Oven . width mm . depth mm . height mm . Combustion chamber . width mm 425. depth mm 460. height mm 520. Flue diameter (outside) mm 150. Flue diameter (inside) mm . Color grey. Lining ceramic tiles. Net weight kg 162. Gross weight kg 185. Packaging dimensions . width mm 700. depth mm 680. height mm 1480. BEFORE PURCHASING THIS PRODUCT, PLEASE MAKE SURE IT MEETS ALL TE STANDARDS AND REGULATIONS IN YOUR COUNTRY AND REGION. Achieving the desired heat output depends on the selected fuel with the necessary caloricity and humidity; its subsequent kindling and refueling; the regulation of the primary and the secondary air as well as the draught; the organizing of effective air heat exchange etc.