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INSTRUCTION ALH230A
EN
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 humidity controller
ALH230A is a room humidity controller that controls a 0...10 V
output signal with a proportional algorithm in direct or reverse
action. The output signal 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. 0.46 W
Operating temperature
0...50°C, 10...90 % RH
(non-condensing)
Outputs
1 analogue output 0...10 V (max. 1 mA)
Working range
0...100 % RH
Manual activation
Min. 600 cycles
Automatic activation
> 100 000 cycles
Dimensions (WxHxD)
85 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.
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
ALH230A 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: Humidity setpoint (20...90 % RH)
SW2: Humidity proportional band (5...50 % RH)
JP1 closed 1-2: Humidification
JP1 closed 2-3: Dehumidification
R28: EC fan min. limit speed
R29: EC fan max. limit speed
The humidity setpoint is set using rotary switch SW1:
SW1
0
1
2
3
4
Setpoint
20
25
30
35
40
(% RH)
SW1
8
9
A
B
C
Setpoint
60
65
70
75
80
(% RH)
The proportional band is set using rotary switch SW2:
SW2
0
1
2
3
4
P-band
5
10
15
20
25
(% RH)
SW2
8
9
A
B
C
P-band
45
50
50
50
50
(% RH)
ALH230A
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.
Low Voltage Directive (LVD) standards
This product conforms to the requirements of the European Low
Voltage Directive (LVD) 2006/95/EC through product standard
EN 60730-1.
EMC emissions & immunity standards
This product conforms to the requirements of the EMC Directive
2004/108/EC through product standards EN 61000-6-1,
EN 61000-6-3, EN60730-1 and EN 60730-2-13.
RoHS
This product conforms to the Directive 2011/65/EU of the European
Parliament and of the Council.
Contact
AB Regin, Box 116, 428 22 Kållered, Sweden
Tel: +46 31 720 02 00, Fax: +46 31 720 02 50
www.regincontrols.se, info@regin.se
5
6
7
45
50
55
D
E
F
85
90
90
5
6
7
30
35
40
D
E
F
50
50
50
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