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AIR HEATER WD-A, WD-U
05
Assembly
05.09 Lamellae Adjustment, automatic – Adjustment, Function
Function:
The nominal temperature (5 - 40 °C) is adjusted at the outside scale. The steepness of the control curve (spread) can be
adjusted inside the housing.
According to the determined temperature
difference between nominal and real value
of the room temperature as well as adjusted
spread of the control curve, the servo-motor
for the choke louver is activated.
When the room temperature exceeds the
adjusted nominal value, the flap is completely
open.
Example:
Hall temperature (nominal value adjustment)
18 °C / Spread 10 K
Flap choked up to ... 8 K
Flap opened > 8 °C
Flap completely opened at 18 °C
05.10 Adjustment Choke Louver with Servo-Motor
Operating Elements:
Adjusting Knob Nominal Temperature ( adjustable outside and inside )
Adjusting Knob Spread ( adjustable in opened box, only )
Adjusting Knob Min. Opening Angle ( adjustable in opened box, only )
Adjusting Knob Max. Opening Angle ( adjustable in opened box, only )
For detailed information see the instruction sheet enclosed with the control box.
F
10
10
Open
100 %
Spread 4K
Spread 6K
80 %
Spread 8K
Spread 10K
60 %
40 %
20 %
Closed
6 °C
8 °C
10 °C
In order to achieve a low resistance with
opened choke louver, the choke louver should
stand parallel to the adjustment louver.
1. Adjustment of Steering Louver
D
Adjust steering louver L to the requested
blow-out direction of the primary air stream
and fix it with clamping device F.
L
2. Adjustment of Choke Louver
Open the box. Adjust Nominal Value
Potentiometer to left, to 5 °C.
Adjust the requested spread 1 - 10 by the
internal knob ( Spread = Spreizung ). Now
the servo-motor opens the choke louver D.
After about 2 - 3 minutes, the position of the
choke louver can be adjusted parallel to the
steering louver by the knob ( max. opening
angle of Flap ).
Adjust the knob ( min. opening angle of
Flap ) to left stop. Close the box.
Now the room temperature can be adjusted
at the Nominal Value Potentiometer, the sys-
tem is ready for operation.
12 °C
14 °C
16 °C
18 °C
20 °C
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