SystemAir VR 300 ECV/B - Before Starting the System; Additional Accessories

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VR 300 ECV/B Installation description
206552 (12-12-2012)
15 Systemair AB
Before starting the system
1. Choose required airflow at normal and min. fan speed as follows:
Set the normal and min. fan speed of the ventilation unit from potentiometers in the back of the
speed regulator (fig. 12) or cooker hood (see instructions for cooker hood). The potentiometers are
set by using a screw driver. Turning the potentiometer results in different control voltages to the
fans (see table 1). To get an idea of the airflow corresponding to each voltage output see fig. 15
showing a fan performance diagram displaying performance curves for supply air and extract air.
Speed setting Voltage range
Min. speed 3-7 V
Norm. speed 5-9 V
Table 1
0
10
20
30
40 50
60
70
0
100
200
300
400
500
600
700
80 90
Q (l/s)
3V 4V 6V
10V
1
2
1 Fan performance curve extract air
2 Fan performance curve supply air
Fig. 15
2. Adjust diffusers and air valves in accordance with commissioning or basic setting (see “Diffusers/air
valves”). Make sure that sector shutter in the inlet diffusers are set so that the air stream is not led
towards obstructions like visible joist, wall etc.
3. Choose desired supply air temperature, (see User and maintenance instructions; “Operation”).
Additional accessories
For more information about silencers, diffusers/air valves, roof units, wall grilles etc. see technical
catalogue and installation respective instructions.