Introduction
4
An underfloor heating control system can in 
principle have 3 different configurations:
t with an evohome controller
t with a central operating device CM927
t without a central operating device
This configuration determines the further 
procedure for commissioning and binding.
Underfloor heating control system 
with an evohome controller
With the evohome controller each zone can be 
controlled separately with an individual time program.
The room setpoint generators/sensors DTS92, 
HCW82 or HCF82 as well as the boiler relay BDR91 
communicate directly with the evohome controller. 
The evohome controller is connected with the underfloor 
heating controller, see "Binding the underfloor heating 
controller with the evohomecontroller" on Page 15.
evotouch
Option
Underfloor heating control system with 
a central operating device CM927
The central operating device CM927 
communicates directly with the underfloor 
heating controller HCE80(R)/HCC80(R). 
The room setpoint generators/sensors DTS92, 
HCW82 or HCF82 as well as the boiler relay BDR91 
also communicate directly with the underfloor 
heating controller HCE80(R)/HCC80(R). 
The operating device CM927 is connected with 
the underfloor heating controller, see "Binding 
the room device CM927 with the underfloor 
heating controller" on Page 16.
CM927
DTS92A(E) HCF82HCW82
Option
Underfloor heating control system 
without a central operating device
The room setpoint generators/sensors DTS92, 
HCW82 or HCF82 as well as the boiler relay 
BDR91 communicate directly with the underfloor 
heating controller HCE80(R)/HCC80(R). 
Binding with the room device has to be carried 
out at the underfloor heating controller HCE80(R)/
HCC80(R), see "Binding the underfloor heating 
controller without time program" on Page 17.
Option
System overview – 
continued