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INSTRUCTION ALC230A
i
i
Read this instruction before installation and wiring of the
product. Subject to change without notice.
Consult documentation in all cases where this symbol is
used, in order to find out the nature of the potentional
hazards and any actions to be taken. All installation,
setting or maintenance of this unit must be performed with the
supply voltage switched off and without any external loads on the
unit! These operations should only be carried out by skilled
workers. The manufacturer is not responsible for any damages
caused by inadequate skills during installation and/or by any safety
devices having been removed or tampered with.
Room temperature and CO
controller
2
ALC230A is a room temperature controller that controls a 0...10 V
internal signal with a PI algorithm in direct or reverse action. The
controller also compares current CO
levels with an adjustable set-
2
point and controls a 0...10 V proportional, secondary internal signal
in direct action. The output signal consists of the max. difference
between signal 1 and 2 and is applied to an air handling unit, e.g. a
ventilator such as an EC fan or damper.
Technical data
Supply voltage
110...240 V AC, 50/60 Hz
Power consumption
Max. 1.25 W
Operating temperature
0...50°C, 10...90 % RH
(non-condensing)
Outputs
1 analogue output 0...10 V (max. 1 mA)
Working range
0...2000 ppm
Manual activation
Min. 600 cycles
Automatic activation
> 100 000 cycles
Dimensions (WxHxD)
88 x 100 x 30.5 mm
Installation
*Wall mounting
Impulse voltage
2,5 kV
Pollution degree
2
Classification of unit
Type 1
Protection class
IP30
Insulation class
Class II
*The unit must be installed exclusively in contact with a wall.
Installation with a spacer that would allow access to the back of the
unit is forbidden.
All manuals and user guides at all-guides.com
Installation
Place the device in a location that has a temperature representative
for the room. A suitable location is approx. 1.6 m above floor level in
a place with unobstructed air circulation. To remove the front cover,
use a 3 mm flatblade screwdriver to depress the locking tongue in
the lower part of the casing (picture 1). Press and twist the screw-
driver, and at the same time pull the bottom part of the front outwards
(pictures 2-4). When the bottom end of the front cover is free from
the bottom part of the casing, slide the cover towards the top of the
casing to free the hooks holding the upper edge of the front cover
(picture 5). Perform the connections according to electrical wiring
diagram. Cables must be fixed using the 2 cable ties supplied as indi-
cated in picture 6. Screw the bottom part of the casing to the wall.
Disconnection
ALC230A should be connected to a switch or circuit breaker in the
building installation. This switch should be in close proximity to the
controller and within easy reach of the operator, and should be
marked as the disconnecting device for the equipment.
Always use the circuit breaker to disconnect the controller from the
mains supply during maintenance of the EC fan or damper.
Settings
The direction of the output signal is set using the JP1 jumper
(picture 8):
SW1: Temperature proportional band (0.5...8.0°C)
SW2: CO
proportional band (10...1000 ppm)
2
SW3: CO
setpoint (350...1500 ppm)
2
JP1 closed 1-2: Heating
JP1 closed 2-3: Cooling
R23: Temperature setpoint (5...30°C)
R28: EC fan min. limit speed
R29: EC fan max. limit speed
The temperature proportional band and integral time are set using
rotary switch SW1:
SW1
0
1
2
3
4
P-band (°C)
0.5
1.0
1.5
2.0
2.5
I-time (s)
1800
1700
1600
1500
1400
SW1
8
9
A
B
C
P-band (°C)
4.5
5.0
5.5
6.0
6.5
I-time (s)
1000
900
800
700
600
ALC230A
The CO
proportional band is set using rotary switch SW2:
2
SW2
P-band (ppm)
SW2
P-band (ppm)
The CO
setpoint is set using rotary switch SW3:
2
SW3
Setpoint (ppm)
SW3
Setpoint (ppm)
* Factory setting
The range of the voltage applied to the ventilator is defined using
the MIN and MAX knobs. MIN is used to define the minimum ap-
plicable voltage to the ventilator (0...5 V), while MAX defines the
maximum voltage (5...10 V). The PI controller will then operate
between the relevant MIN and MAX values.
Example 1:
If the MIN value is set to the minimum position and MAX to the
maximum position, the PI controller will work from 0...10 V.
Example 2:
If MIN is set to 2 V and MAX is set to 7 V, the PI controller works
from 2 to 7 V.
This product carries the CE mark.
For more information, see www.regincontrols.com.
Contact
AB Regin, Box 116, 428 22 Kållered, Sweden
Tel: +46 31 720 02 00, Fax: +46 31 720 02 50
5
6
7
www.regincontrols.se, info@regin.se
3.0
3.5
4.0
1300
1200
1100
D
E
F*
7.0
7.5
8.0
500
400
300
0
1
2
3
4
5
6
10
25
50
75
100
125
150
8
9
A
B*
C
D
E
200
300
400
500
600
700
800
0*
1
2
3
4
5
6
350
400
450
500
550
600
650
8
9
A
B
C
D
E
750
800
850
900
950
1000
1200
7
175
F
1000
7
700
F
1500
2
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