PV 20a
External auger
A feeding auger transports pellets from the pellet container to the burner. The burner controls the
work of the auger. The auger is connected to the burner with a special hose. The hose is made of
melting material that acts as a safety measure against back-burning. The uppon side of auger (with
motor) must be fixed to a storage or to some other object nearby (with delivered chain) .
Figure 7 shows correct position for external auger. As the hose is a safety device, it must be placed
strictly as described below. The vertical distance between auger outlet and burner inlet must be in
range of 40..70cm and horizontal displacement 10..20cm (typical auger angle 30
o
..45
o
). External
auger cannot be installed in position with angle greater than 45
o
. The hose must be in angle of 50
o
or
more to ensure free falling of the fuel.
Figure 7 External auger installation (units in mm)
Electrical connections
The burner is equipped with a standard oil burner plug that has 7 contacts. There will be different
connection schemes used for different boilers. Usually the burner is connected to the boiler with a 5-
wire cable. It is also possible to connect with a 4-wire cable.
Caution! All electrical connections of the burner must be made by a qualified professional.
12 www.pelltech.eu
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