1
2
1
2
1
2
Contact
e.g. heating/cooling
1 2
Room sensor
1
2
1
2
COMNO
2
W13
2*
W16
W14
W15
W12
2* 2*
5
Kat
herm HK , electromechanical 230 V, 2- or 4-pipe, valve actuator(s) 230 V AC Open/Closed, optional condensate
pump, with Climate controller type 14894x
- Options -
For more information, refer to the
instructions for the Climate
Controller
128 4 5 6 11 12 9 10
GND
0-10
V
N A2 A1 E3 E2 E2 E1 E1
7
L
3
1
2
4
3
Back-up
terminal
by others
2
1
gr/ye
1
2
3
1
2
4
Jumper
gr/ye
1
2
3
1
2
4
Jumper
gr/ye
1
2
gr/ye
1
2
gr/ye
1
2
3
4
3
4
1
2
3
4
To further units
(Max. number see
Information)
gr/ye
1
2
gr/ye
1
2
gr/ye
1
2
3
4
3
4
3
4
2*
W11
ZKK
ZKK
N PEL
Mains power 230 V AC
1
2
gr/ye
Nominal voltage
230 V / 50 Hz
Fuse by others.
Refer to “Electrical data”
information table.
VK Y GNDL N PE N VH N UB
Fan speed
Mains power 230 V AC
Refer to Electrical data
information table!
NO COML N NC
Condensate alarm
- Optional -
Condensate pump
Mains
power
supply
230 V AC
Katherm HK
230 V electromechanical
(*00)
Unit no. 1
Fan connection
Actuator
Heating/
cooling
Type 146905
-Optional-
Actuator
Cooling
Type 146905
VK Y GNDL N PE N VH N UB
Fan speed
Mains power 230 V AC
Refer to Electrical data
information table!
NO COML N NC
Condensate alarm
- Optional -
Condensate pump
Mains
power
supply
230 V AC
Katherm HK
230 V electromechanical
(*00)
Unit no. 2
Fan connection
Actuator
Heating/
cooling
Type 146905
-Optional-
Actuator
Cooling
Type 146905
3
4
1
2
3
4
1
2
Jumper
Jumper
gr/ye
1
2
1
2
gr/ye
1
2
3
4
ZKK
W1
3
W3
2*
W7
3
W2
5
W4
5
1
2
1
2
3
4
ZKK
3
4
3
4 3
4
N PEL
Mains power 230 V AC
1
2
gr/ye
Nominal voltage
230 V / 50 Hz
Fuse by others.
Maximum 1 A
1
2
2
1
ZKK
1
2
1
2
2
1
ZKK
1
2
Climate controller
Type 148941
Type 148942
W6
2*
5
W9
2*
W15
5
W8
2*
W10
Note:
Digital input 2 is omitted with types 148943 and
148944.
Instead use Modbus interface with cable type 2**.
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