VALLOX DIGIT2 SE
14
MAINTENANCE INSTRUCTIONS
4.2. Fans and post-heating radiator
The supply and extract air fans (D and E) have been fastened with rubber
collars (F). When removing the fans for maintenance remove the one-way
dampers (L) from the VKL model, open the ear (K), which is bent over the
rubber collar (F). Then lift the rubber collar off and turn the fan off from above
the lower support (M) made of rubber. Then disconnect the electric connector
(G).
Clean the fan blades with compressed air or with a brush. Each blade has
to be equally clean so that the fans stay balanced. Take care not to remove
the balancing pieces attached to the fan blades.
If you use water in cleaning the unit or its parts, do not let it flow into the
electrical parts.
4.2.1.
Radiators
I
Post-heating radiator: electricity
J
Preheating radiator: electricity
H Post-heating radiator and actuator: liquid
P Preheating radiator: liquid
4.2.2.
Detaching and attaching of self-actuated one-way damper (vacuum
damper), MLV and VKL models
A Put the hook of the damper (Y) rim under the back edge of the fastening
collar (K) of the fan (F). Then push the damper downwards until the
steering edges of the valve go inside the rubber collar.
B Push the other side of the collar with a finger.
C Put the hook of the front edge of the damper below the front edge of the
collar.
To detach the damper take the same steps in the opposite order.
4.3. Filter guard
DIGIT2 SE can be equipped with an optional filter guard. The filter guard symbol ( ) normally
lights up in the main display at speeds 7 and 8, when the filters are clean, and this does not
require any maintenance activities. If the symbol does not light up at speed 8, the pressure
in the ventilation ductwork of the building differs from the factory setting. In that case, adjust
the filter guard setpoint lower in the inside of the unit (see Section 2.14). If the filter guard
symbol lights up at fan speed 4 or 5, the filters need cleaning. If they are clean, the lighting
up may be caused by too dense a mosquito net installed in the external grille, contrary to
what is said in the installation instructions, or by the closing of the supply air valves in the
rooms. If, after checking these things, the symbol continues to light up at small speeds, adjust
the setpoint to a higher value.
4.4. Condensing water
During the heating season, humidity of extract air condenses into condensing water. Water
formation may be abundant in new buildings or if ventilation is low compared to the humidity
build-up caused by the residents. Condensing water needs to flow out from the ventilation
unit without hindrance. In connection with maintenance, e.g. in autumn before the beginning
of the heating season, make sure that the condensing water outlet (L) in the bottom tank is
not clogged. You may check it by pouring a little water in the tank. Clean if necessary.
Do not let water flow into electrical devices.
© VALLOX • We reserve the right to make changes without prior notice.
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