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VR 250 ECH/B
Installation description
206609 (17-09-2010)
11
Systemair
AB
GB
Possible extra functions
It is possible to achieve different optional functions by altering the positions of 4 dip-switches that are
found on the main print card
(fig. 11)
situated in the electrical connection box
(fig.2).
The following
alternative functions can be achieved:
Dip-switches No.
Function description
1 2 3 4
On
Stop at night operation
Off
Low speed at night operation
(default)
On
Operation with heater
(default)
Off
Operation without heater
Off
No monitoring of processor values
(default)
On
Supply air fan and extract air fan will deliver the same air volume
(default)
Off
Supply air fan will deliver a 5% lower air volume than the extract air fan
Fig. 11
AI2
GND
R
R
Earth
N
R
4
3
AI1
On
Off
2
1
AI3
GND
AI4
GND
GND
12V
GND
Hi
COM
Lo
DI1
DI2
0
4
3
AI1
On
Off
2
1
Dip-switches default setting
1 OFF
2 ON
3 OFF
4 ON
Содержание VR 250 ECH/B
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