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13. EN - List of terminals
1
2
-
+
A
B
GND
27
29
31
28
30
Terminals
Function
1 and 2
Not used
3 and 4
Not used
5 and 6
Circulation pump, heating
7 and 8
Cooling, on/off, step 1
9 and 10
Cooling, on/off, step 2
11 and 12
In-op. indication, low speed
13 and 14
In-op. indication, high speed
15 and 16
Group alarm A
17 and 18
Group alarm B
19 , 20 and 21
In-operation indication
22 , 23 and 24
Damper control
25 and 26
Control voltage, output
27, 28 and 29
Connections for EIA-485
network
30 and 31
Supply air boost
32 and 33
Extract air boost
34 and 35
External
36 and 37
Reference voltage
38 and 39
External outdoor
temperature sensor
40 and 41
External EA/room
temperature sensor
42 and 43
Variable control, cooling
44 and 45
Control: extra control
sequence/recirculation
damper
46 and 47
External low speed
48 and 49
External high speed
50 and 51
External alarm 1
52 and 53
External alarm 2
54 and 55
External fi re/smoke
function
56 and 57
External stop
58 and 59
Control voltage
60 and 61
Control voltage
24
3
5
7
9
11
4
6
8
10
-
+ -
+
-
+ -
S
-
S
- + - +
33
35
37
39
41
43
45
32
34
36
38
40
42
44
Remarks
Independent contacts, max 12A/AC1, 5A/AC3, 250VAC. Close when heating is needed.
Independent contacts, max 12A/AC1, 5A/AC3, 250VAC. Close when cooling is needed.
Independent contacts, max 12A/AC1, 5A/AC3, 250VAC. Close when cooling is needed.
Independent contacts, max 12A/AC1, 5A/AC3, 250VAC. Close when the fans operate at low speed.
Independent contacts, max 12A/AC1, 5A/AC3, 250VAC. Close when the fans operate at high speed.
Independent contacts, max 12A/AC1, 5A/AC3, 250VAC. Closes or opens (setting) if an A alarm trips.
Independent contacts, max 12A/AC1, 5A/AC3, 250VAC. Closes or opens (setting) if an B alarm trips.
Independent contacts, max 12A/AC1, 5A/AC3, 250VAC. 19 NC, 20 C, 21 NO. Close when AHU is in operation.
230VAC. 22: controlled phase, 23: fi xed phase, 24: zero conductor. 22 is energized while the AHU operations.
Control voltage 230VAC. Max load 1.5A. Interrupted by safety switch and burdens the supply voltage fuse.
27 communication connection A/RT+, 28 communication connection B/RT-, 29 GND/COM.
Input for 0-10VDC. Input signal acts upon the supply air fl ow/pressure set point.
Input for 0-10VDC. Input signal acts upon the extract air fl ow/pressure set point.
0-10VDC input. Acts on the supply air set point if the AHU is operating in the supply air regulation mode. Acts on the
extract air set point if the AHU is operating in the extract air regulation mode. Effect: ±5°C. If the AHU is operating
in the ERS regulation mode, it acts on the EA/SA differential. The differential cannot be <0°C. The EA/SA differential
decreases on an increasing input signal. Can be activated from the hand-held micro terminal.
Output for constant 10VDC. Max. permissible load: 2mA.
38 GND, 39 signal. Connection for externally mounted digital outdoor temperature sensor.
40 GND, 41 signal. Connection for externally mounted digital extract air/room temperature sensor.
Output for cooling, 0-10VDC. Max. permissible load: 2mA at 10VDC.
Use of the control output steered by the function selected in the hand-held micro terminal. Max. permissible
load: 2mA at 10VDC.
External contact function. Overrides the timer from stop to low speed operation.
External contact function. Overrides the timer from stop or low speed to high speed operation.
External contact function. Optional normally open/normally closed. External alarm is available in the GOLD.
External contact function. Optional normally open/normally closed. External alarm is available in the GOLD.
External fi re and smoke function. On delivery, this function is fi tted with a jumper. The contacts connected
between 54 and 55 are closed while the unit is operating. If they open, the function will trip and initiate an
alarm.
Stops the AHU via normally-closed contacts. Fitted with jumper on delivery. AHU operation presupposes
connection between 56 and 57. If the connection is interrupted, the AHU will stop.
24VAC control voltage. Terminals 58-61 can bear a combined total load of max 16VA all total. Can be
interrupted by safety switch.
24VAC control voltage. Terminals 58-61 can bear a combined total load of max 16VA all total. Can be
interrupted by safety switch.
13
15
17
19
21
12
14
16
18
20
22
P
-
-
-
-
G
G0
47
49
51
53
55
57
59
46
48
50
52
54
56
58
23
25
24
26
L
N
L N
G
G0
Digital inputs, terminals 46-
61
60
57, are of low voltage type.
Analogue inputs, terminals
30-35, have input impe-
dance 66 kΩ.
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