Mounting and installation
12
Connecting the thermal actuators
 
Damage to the underoor 
heating controller.
Take the technical data into account at 
thermal actuators: 
Total of 3A maximum current, 250mA 
continuous current per zone.
!
Each zone can control up to 3 thermal actuators. 3 
thermal actuators can be connected directly for Zone 
1, 2 for Zone 2 and 1 thermal actuator each for Zones 
3 through 5. One connection for the expansion module 
is available for each of the zones 6 through 8.
If more than 11 thermal actuators are to be connected to 
the underfloor heating controller, the cables of the thermal 
actuators must be connected in a distribution box.
  If applicable, install the cables of the thermal 
actuators to the distribution box.
  Wire the wires of the thermal actuators.
  Break out the openings for the cables on 
the housing using a diagonal cutter.
  Strip the connections 5.5 mm (see 
fold-out page, Fig. 6).
  Insert the connecting cables of the thermal actuators 
into the cable openings of the connectors. 
  Close the terminals.    
  Plug the connectors into the sockets 
of the corresponding zones (see fold-
out page, Fig. 4 (Z1...Z8)).
8
  Clamp the cables into the stress relief clamp.
  Secure the cable with the cable clamp.
Connecting a pump 
(
230 V AC
)
As soon as a zone is active, the pump is 
activated with a time delay. The pump switches 
off as soon as all the valves are closed.
The LED   (see fold-out page, Fig. 3 (6)) lights 
up green when the pump is running.
The pump contact is not floating. The pump can 
be connected directly, see circuit diagram.
 
Damage to the underoor 
heating controller.
Short-circuit at incorrect installation.
Connect all the controllers 
to the same phase.
!
  Strip the connections 7 mm (see fold-out page, Fig. 7).
  Connect the pump (see fold-out page, Fig.4 (12)).
Installation Disassembling
1
2
Cabling – 
continued
L
N
PE
N
Pum
p
Controller 2 Controller 3
Pump connection
Pum
PE