Energy efficiency class A. Energy efficiency index 96. Nominal heat output . space heating output kW 5.00. water heating output kW 7.00. Maximum operating pressure bar 2. Testing pressure bar 4.0. Water content l 12.30. Thermal discharger . Efficiency % 73.44. CO at 13% O2 % 0.0989. PM emissions at 13% O2 mg/Nm3 35.40. NOx at 13% O2 mg/Nm3 108.01. ...