La Nordica Sierra 16 — large wood-fired central-heating stove of 15.4 kW with open vessel, closed circuit and touchscreen control. The Sierra 16 delivers 10.2 kW to the water and heats volumes of up to 442 m³. - 15.4 kW rated output — 10.2 kW-H₂O delivered to the water - Feeds both radiators and domestic hot water - 86% efficiency — 76% seasonal efficiency — class A+ - Touch display for full thermostatic control - Complete hydraulic kit supplied as standard - 51-litre oven - Access to the technical compartment and ash pan - Ø150 mm flue outlet — top or rear connection