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VR 250 ECH/B
Operation and maintenance instructions
206610 (16-11-2010)
6
Systemair
AB
GB
Kitchen extraction
VR 250 ECH/B is designed for connection to a cooker hood.
Note!
The cooker hood must be equipped with a damper leaving no opening in closed position (without
opening for basic ventilation).
During forced ventilation from the cooker (when cooking) the damper in the cooker hood is opened from
switch K,
(fig.2)
. At the same time the fans will automatically change to MAX fan speed. Extract from the
cooker is led directly through the extract fan, and not through the heat exchanger. The capacity of the
extract fan is then primarily used for extract from the cooker, but a minor airflow is maintained through the
extract louvers. The opening time for the cooker hood damper can be set from 5 to 60 minutes. The
damper closes automatically according to chosen time, or manually by turning switch K to
. The bypass
damper in the unit will close automatically and the extract fan will switch to normal ventilation (NORM).
Note!
When extract from the cooker is used the extract air will bypass the heat exchanger, and set supply
air temperature is obtained by means of electrical heater battery in the unit. Automatic closing of the
damper in the cooker hood ensures energy efficient use of the ventilation system.
