Nordic EFFECTA LAMBDA 35, Installation, Maintenance, Service, Assembly, Page: 7 / 32

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System components
Laddomat
Laddomat or an equivalent product should always be installed
between the boiler and accumulator tank. The Laddomat is
described in detail on page 12. The Laddomat prevent the boiler
from being overheated by sending the cold water from the
accumulator to the boiler in case of a power failure.
Shunt automatic system
The installation of a shunt automatic system on the radiator
circuit is always recommended. The automatic system senses
the temperature in a suitable location in the house and adjusts
the incoming temperature on the radiator circuit accordingly. This
measure can reduce your wood consumption by as much as 25
% and will improve your heat comfort level.
Expansion vessel
The expansion vessel can normally withstand a pressure of 6
bar. Maximum operating temperature is 99°C. The volume of
a pressure vessel is 10-12 % litres depending on the system’s
overall volume. An open vessel must contain 5 % of the total
system’s volume. When planning for size, keep in mind the
radiator volume and the volume of the boiler. A pressure vessel
must have a first pressure of 0.2 bar above the highest radiator.
Safety valve
The safety valve opens if the pressure reaches 1.5 bar. When the
valve opens, excess water drips out and the system pressure is
reduced. The pressure must under no circumstances exceed 1.5
bar. AT LEAST ONE SAFETY VALVE MUST BE INSTALLED!
See connection scheme for where to install the safety valve.
Shunt valve
The shunt valve is fitted to the radiator circuit. Its task is to mix
accumulator tank water with recycled water from the radiators
to achieve the correct temperature of the radiator water. For
the installation of the shunt automatic system, please follow the
supplied description.