Painted steel and majolica covering - Door with screen-printed ceramic glass - High-efficiency hermeticcombustion chamber - Top flue gas outlet - Explosion-relief valve - Manual heat exchanger cleaningsystem with levers at top - High-efficiency heating system circulator pump - 8 l expansion vessel - 3 barsafety valve - System drain valve - Air vent valve - Cast-iron burn pot with post combustion - Removableash drawer - Removable handle - Palmtop - Emergency display - Optional 3-way ball valve kit for DHW - Optional rear or side flue gas outlet kit