Rc25 Programming Unit - Buderus Logamax plus GB162 Technical Manual

4 Heating control
4.4.3

RC25 programming unit

The RC25 ( fig. 26) programming unit is connected to
the Logamatic EMS and supplied with power via a 2-core
BUS cable. It may be used either as a programming unit
or as a remote control. A wall mounting bracket for
mounting the RC25 programming unit inside the living
area is part of the standard delivery.
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Fig. 26 Displays and controls of the RC25
programming unit
1 LCD for showing the selected values and temperatures
(permanent display: actual room temperature)
2 Rotary selector for adjusting values that are shown on the
display after pressing a key or for switching between the
service level menus
3 Operating mode selector key with LED for automatic
heating mode in accordance with a time switch
4 Operating mode selector key with LED for standard
heating mode (day mode - "Constant heating")
5 Operating mode selector key with LED for setback
heating mode (night mode "Constant setback")
6 Key with LED for activating once only DHW heating or for
selecting the DHW temperature
7 Flap to cover the second control level
8 Key for selecting the heating program
9 Key for adjusting the time and the day of the week
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7 747 009 801-19.1il
A system with room temperature-dependent control of a
heating circuit without mixer directly downstream can only
be achieved with the RC25 programming unit. A room
temperature sensor is integrated into the RC25. In
addition, the RC25 programming unit can regulate a
DHW circuit with thermal disinfection and DHW
circulation pump, as well as a 7-day time switch with
standard programs.
If the RC25 programming unit acts as a remote control,
then the RC35 programming unit takes over control of the
heating circuits and the gas condensing boiler in the
Logamatic EMS control system. In that case, the RC25
programming unit supplies the necessary information
from the room and regarding the operating mode.
In both applications, the LCD shows the captured room
3
temperature (
time and the day of the week.
4
Selector keys (
selection of the heating modes "Automatic, Constant
5
heating "and" Constant setback". The integral LED
signals the current operating mode.
6
The functions of the RC25 programming unit are
accessible at two operating levels that are called up in
accordance with the simple and proven "Push & Turn"
operating concept. Where required, a calibration function
for adjusting the displayed room temperature is available
at the service level. This is activated by means of a button
recessed in the side of the unit.
Heating contractors can set various system parameters at
the service level, e.g. activating DHW heating with
permanent switching of the DHW circulation pump or the
definition of the thermal disinfection function.
6 720 645 821 (2010/09) – Logamax plus GB162
fig. 26, pos. 1). The LCD also shows the
fig. 26, pos. 3 to pos. 5) enable the