Technical Specifications:
The document provides technical data for the Pellematic Maxi condensing boiler technology, with models PES36, PES48, and PES56. The boiler-rated power ranges from 41 kW to 64 kW, with partial load capacities between 15 kW and 19.2 kW. The energy efficiency class is A++, with an energy efficiency index (EEI) around 132. The seasonal space heating energy efficiency is approximately 90-91%.

Boiler Efficiency:
The boiler efficiency at rated power in condensation mode (HHV) is between 94.2% and 95.1%, while in LHV mode, it is consistently 102.7%. Partial power efficiency in LHV mode ranges from 101.9% to 102.2%.

Water and Flue Gas Specifications:
The water capacity is 135 + 24 liters, with supply/return dimensions of 2 inches (DN 50). Water resistance varies with temperature differences, and the boiler operates at temperatures between 65°C and 90°C. The maximum operating pressure is 3 Bar, with a test pressure of 4.6 Bar. Flue gas temperatures range from 45°C to 80°C, with a flue gas tube diameter of 182.5 mm.

Fuel and Combustion:
The boilers use pellets made of 100% natural wood, conforming to EN 14961–2, class A1. The calorific value is 16.5 MJ/kg (4.6 kWh/kg), with a bulk density of over 600 kg/m3. The water content is less than 10%, and ash content is below 0.7%.

Weight and Dimensions:
The overall weight, including packing, is 780 kg, with the boiler body weighing 330 kg. The internal ash pan volume is 30 liters, and the external ash box volume is 25 kg.

Electrical Components:
The connection value for the suction system is 230 VAC, 50Hz, 16A. Various components such as the main drive, drive motor, suction turbine, and combustion air blower have specific power ratings, with the suction turbine at 1400 W.

Manufacturer Information:
The document is authored by ÖkoFEN Forschungs- & EntwicklungsgesmbH, located in Niederkappel, Austria. Contact details and further information are provided.