HCE80(R) / HCC80(R) Mounting and operation
13
Installing an external antenna
Up to three underfloor heating controllers 
can be connected to an antenna. 
1
  Only install the external antenna outside 
metal housings (e.g. control cabinets).
  Install the antenna at a suitable location near 
the underfloor heating controller (3). 
3
  Strip the connections 5.5 mm (see 
fold-out page, Fig. 5).
  Connect the antenna (see fold-out page, Fig. 4 (9)): 
Shield to Terminal 2, second conductor to Terminal 1. 
Ensure that the polarity is correct. Otherwise 
the antenna may be destroyed 
  Close the terminals.  
Operation with several underfloor heating controllers
If several underfloor heating controllers are operated 
simultaneously, an antenna (internal or external) 
may only be connected to one controller.
Closing the housing
  Place the housing cover back on (see fold-out page).
  Snap the left and right snap lock back into place.
  Tighten the screws on the top.
Commissioning
During commissioning, room setpoint 
generators/sensors and, if applicable, the 
time programs of the central operating 
devices are assigned to the temperature 
zones of the underfloor heating controller.
  Connect the underfloor heating 
controller to the supply voltage. 
  The mains voltage LED (POWER) lights up.
LED displays at the underfloor heating controller
The LEDs on the underfloor heating controller 
(see fold-out page, Fig. 3 (1, 2, 3)) indicate 
the operating modes of the underfloor heating 
controller and the installed temperature zones.
LED
Display
Meaning
POWER (green) Lights up Normal mode
 (red)
Lights up Group alarm
Flashing Antenna fault display
 (orange)
Rapid flashing No device installed
In normal mode the LEDs 1...8 show the position of 
the thermal actuators (see fold-out page, Fig. 3 (7)).
LEDs 1...8 Meaning
Green Thermal drive opened
Off Thermal drive closed
Controller 1 Controller 2 Controller 3
B+ B+ B+
1
1    21 
    2
Antenna connection
5
14
B+ H/C TW