NT-50906901-KSDR-ECOWATT-48-88-120-AN-170907
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ENGLISH
EI, EC, EF and ECF models
external electric heater 0/10 V control (accessory) + motorised damper (accessory)
Fdc A andB
24V~
N
ON
23
7
5
3
1
25 27
21
41
35
33
31
61 63
37
24
8
6
4
2
26 28
22
42
36
34
32
62 64
38
+24V +24V +24V
G0
G0
B3
+24V
24V
A04
A03
A02
A01
10
9
12
11
14
13
24V 24V 24V
ON
24V
A04
24V
D
V+
B2
B1
16
15
24V
A05
2
1
8
7
Gnd
SA1
0V
10V
Electrical heater 0-10V
command panel
Power supply
G0
G0
G0
G0
G0
G0
G0
ON : OFF
Unit control
terminal block
Supply
sensor
Fresh air
sensor
With LF 24 S
or LF 24 A
actuator for
fresh air
damper
Servo-motors and external electric heaters are provided as accessories.
In the case of an external coil/electric heater, the supply temperature sensor must be moved. Use a TGK3
PT1000 sensor, and attach it instead of the sensor integrated into the unit at terminal blocks 1-2.
For the EC and ECF models, the external electric heater control is connected in parallel with the hot water
coil control, and both coil/heater are coordinated simultaneously.
EX Model - Direct expansion coil + motorized damper (accessory)
0-10V heating/cooling signal to the DX group and DX group defrosting signal inlet for fan stop
Fdc A and B
24V~
N
ON
23
7
5
3
1
25 27
21
41
35
33
31
61
37
24
8
6
4
2
26 28
22
42
36
34
32
62
38
+24V+24V+24V
G0
G0
B3
+24V
24V
A04
A03
A02
A01
10
9
12
11
14
13
24V 24V 24V
ON
24V
A04
24V
D
V+
B2
B1
16
15
24V
A05
2
1
8
7
ON / OFF
63
64
6
5
G0
Heating signal (AO1 - G0)
Cooling signal (AO3 - G0)
11
14
12
21
24
22
ON / OFF
Direct expansion group (DX)
Free defrosting contact
(no potential)
(provided by DX group)
G0 G0
G0 G0 G0 G0
Supply
sensor
Fresh air
sensor
Antifrost
sensor
Unit control
terminal block
With LF 24 S
or LF 24 A
actuator for
fresh air
damper
