
MAINTENANCE MANUAL
It is essential for the efficiency of the device to keep its interior clean. The device
should be cleaned of dust that has seled on the heat exchanger and fans at least
once a year before heating season. To avoid failure of electrical components, make
sure that no water or other liquids get inside.
Damage or improper operation resulting from contamination of the device interior
is not subject to warranty repair or replacement.
To clean the inside of the device, follow the steps below:
• disconnect the device from the power source,
• dismantle the casing of the device in accordance with point 1 of this manual,
• clean the unit elements from dust with a so-bristle brush or compressed air,
• the remaining di should be cleaned with a slightly damp cloth without detergents,
• install the casing of the device in accordance with point 5 of this manual.
NOTE: During the heating period, peorm maintenance on the cold device.
ELECTRIC WIRING DIAGRAM
NOTE: Only properly skilled and trained personnel, holding licenses and observing applicable standards
can install electric connections. Power can only be switched back on when the correctness of the
whole wiring was checked and approved. Due to use of safe low voltage fans the heaters can only
be powered by 24 V DC voltage. It is prohibited to connect the heaters directly to 230 V AC power grid.
INSTALLATION MANUAL
FAN ASSISTED WALL-MOUNTED HEATER
NVKN2-40/7,5/L