www.vallox.com
Vallox Oy | Myllykyläntie 9-11 | 32200 LOIMAA | FINLAND
MANU
AL
LED
10 A
3 x 1,5 S
S
+
L
L
N
-
4 x 0,5 S
10V DC
External electrical connection to the
ventilation unit
Performance values
1
2
3
200
100
60
40
20
10
6
10
20
40
60
100
40
35
30
20
25
40
35
30
20
25
40
35
30
20
25
LpA, dB(A) LpA, dB(A)
LpA, dB(A)
Adjustment positions of
the damper
1. Damper closed
(25 mm open)
2. Damper half open
3. Damper open
Adjusting the fan speeds
A low signal voltage is coming to the control panel and,
therefore, the adjustment is made while the control
panel is connected and the ventilation unit is running.
• The adjustment is made by using the four holes
found underneath the knob of the ventilation
control panel (Figure 2) one speed at a time, by
using the potentiometer of the speed in question.
• The set voltage can be measured from the
measurement points found underneath the knob
of the control panel (markings S and -) or on
the terminal block underneath the black casing
(markings S and -, see Figure 6) by using the
DC voltage measuring of a universal meter. The
adjustment range is ~2…11.2 V.
• The control voltage (air flow) increases when the
potentiometer is turned to the right. The preset
voltages are 2.5 V, 5 V, 7.5 V, and 10 V.
Please
note! Do not set the control voltage so low that
the fan does not stop (approx. 1.5 V).
An example of air flow adjustment:
Standard ventilation is adjusted at speed 2.
• Set the control panel to speed 2 and measure the
air flows from the valves.
• If the total air flow is too low, increase the control
voltage from potentiometer 2.
• If the total air flow is too high, decrease the control
voltage from potentiometer 2. Do not choke the air
flow unnecessarily by using valves!
• The balance between the supply and extract air
flow of the Vallox MC ventilation unit is adjusted
with the potentiometer inside the unit. Do not
change the supply/extract balance in connection
with measurements conducted at other speeds.
• Adjust the Away air flows similarly by using speed 1
(potentiometer 1).
• Adjust the Boost air flows similarly by using speed
3 (potentiometer 3).
• Speed 4 is usually reserved for the maximum
speed.
Set the ventilation control to
position 1 and remove the
knob by using a screwdriver,
for example
Measure the voltage from
poles – and S, set e.g. speed
1 from potentiometer 1
Measure the voltage from
poles – and S, set speed 2
from potentiometer 2, etc.
There are holes for
adjustments and
measurements underneath
the knob
Replace the knob, set the
ventilation control to the next
speed, and remove the knob
again.
You may also carry out
the measurement from the
terminal block, at the places
indicated by the wiring
diagram.
Lastly, measure the voltage of each speed from the
measuring pins and record them in the measurement
log. In e.g. terraced houses, the voltage measurement
can be used to “copy” the measurement made in the
first apartment to other similar apartments.
1
2
3
4
5
6
D11
211
/2
8.
02
.2
02
0
St
at
ic p
re
ss
ur
e l
os
s P
a
Air volume flow rate, dm3/s
DISTRIBUTION
BOARD
COOKER HOOD
Electrical connections must be carried out by
authorised persons only.
Vallox SC or MC
ventilation unit. Note! SC
units have no led cable
