HCE80(R) / HCC80(R) Mounting and operation
25
Boiler feedback
Connecting the boiler feedback via an analog output 
(only HCE80/HCC80) to external controllers
The analog output voltage changes 
depending on the valve position.
1
  Strip the connections 5.5 mm (see 
fold-out page, Fig. 5).
2
  Connect the boiler feedback (see fold-
out page, Fig.4 (9)). 
Boiler feedback is possible with the controllers 
MCR200, MCR40, ZG252N, Panther and Smile.
  Connect the inputs in accordance with the enclosed 
instructions to the underfloor heating controller (earth 
input to Terminal 6, temperature- input to Terminal 5).
Implementing a boiler feedback via a 
wireless connection (with BDR91)
The relay is switched on and off 
depending on the valve setting.
Implementing a boiler feedback with an integrated relay 
42 V AC, floating contact (only HCE80R/HCC80R)
The relay is switched on and off 
depending on the valve setting.
1
  Strip the connections 5.5 mm (see 
fold-out page, Fig. 5).
2
  Connect the boiler feedback (see fold-
out page, Fig.4 (9)). 
Allocating relay modules for controlling 
the heat generator 
Depending on the heat requirement of the installed 
rooms the relay module BDR91 controls the heat 
generator as a function of the valve setting.
Binding the boiler feedback BDR91
 
  Keep the button at the relay module 
BDR91 pressed for 5 seconds to 
activate the binding mode.
    The red LED at the relay module flashes 
in the rhythm 0.5s on/0.5s off.
 
  Press the installation button   at 
the underfloor heating controller.
    After successful allocation the red LED 
of the relay module extinguishes.
 
  To exit the device display press 
the installation button   at the 
underfloor heating controller again.
Options