38
Boiler temperature
DHW
Solar energy
Information
Select with
48 °C
Heating
(
START
STOP
Control functions
Heating circuit control unit
Brief description
■ The control unit can regulate up to 3
heating circuits using mixers M1, M2
and M3.
■ The set flow temperature of every
heating circuit is determined from the
following parameters:
– Outside temperature
– Set room temperature
– Operating mode
– Heating curve slope and level
■ The flow temperature of the heating
circuits is regulated by opening or clos-
ing the mixers in stages.
The mixer motor control changes the
actuating and pause times subject to
the control differential (control devia-
tion).
■
Coding addresses
that influence the
heating circuit control:
see coding summary
Functions
The heating circuit flow temperature is
captured by the flow temperature sen-
sor.
Time program
The control unit time switch regulates in
accordance with the times programmed
in the "Heating" program between cen-
tral heating with standard room temper-
ature and central heating with reduced
room temperature.
Every operating mode has its own set
level.
Outside temperature
A heating curve must be set up for
matching the control unit to the building
and the heating system (see page 12).
The heating curve characteristics deter-
mine the set flow temperature subject to
outside temperature.
Heating circuit pump logic (economy
mode)
The heating circuit pump is switched off
(set flow temperature set to 0 °C) when
the outside temperature exceeds the
value selected via coding address "A5".
Function description
Display and control elements
5604 447 GB
