Function
Appliances of the
UNplus, SNplus and INplus
type series feature natural
circulation (convection). For
the UFplus, SFplus and
IFplus type series, air is circulated by a fan at the
working chamber rear panel
(Fig. 3 , No. 1). It increases
the air flow and provides
stronger horizontal forced
air circulation than natural
convection.
In both the convection and
fan ventilated appliances,
supply air (2) is preheated
in a pre-heating chamber
(3). Through the ventilation
slits in the side panel of the
working chamber, the preheated air is introduced into
the interior of the chamber.
The supply and exhaust air
(5) volume (air change) is
controlled by the air flap
(4) on the rear panel of the
appliance.