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Function & description
ULMA LAMBDA BOILER
Belongs to a new generation of pellet boiler that is specially built only for pellet combustion which means
that it has a standing convection system and special design of the hearth to catch the smallest soot
particles on the convection surfaces and longest possible flue-gas way to increase the efficiency.
The boiler consists of a combustion chamber with a gas canal surrounded by an outer shell that holds
200 liter of water. At combustion of pellets the heat from the burner goes straight to the boiler water that
transports the heat to the hot water via a hot water coil which is 11 meters long. The boiler is mainly
meant for combustion of pellets but is also provided with a 6 kW immersion heater.
Sweeping
Regular cleaning of heating surfaces is made from the top by taking off the lid placed in the center on the
top of the boiler. The boiler is provided with an extra large ash box in the bottom part to facilitate the
maintenance. The ash box is emptied as required approx.. 1500 Kg pellet. Normally 3-4 times per year is
enough for an average house. Control of the ash amount in the box should be made at least one time per
month. The ash box holds about 48 L of ash.
Thermostat
Always set the thermostat at a lower temperature than the burner.
Shunting automaticity
The heat to the radiator system goes via a shunt valve. In the shunt valve the boiler water is blended with
the return water so that the right temperature is obtained in the radiator system in relation to the indoor
temperature.
