6
3931226/02/05/B
Doepke
Operating Instructions
Dupline DRT 1 Room Thermostat
9. General Information
The DRT 1 room thermostat is a component of the Dupline installation system and gen-
erates a switching channel for evaluation via the Dupline bus, e.g. for regulating radiator
control valves.
The thermostat generates the switching channel according to the desired temperature
set at the valve and the actual room temperature. If the room temperature is below the
set value, the DRT 1 will activate the Dupline channel or, conversely, deactivate it. Via an
additional Dupline channel the DRT 1 can also be preprogrammed for a 4ºC lowering at
night-time. The Dupline address is freely selectable between A1 and P8, the night-time
reduction can be preset at an address within the B-group.
The DRT 1 requires no external power source as it is supplied by the Dupline signal. Al-
though its compact design makes it suitable for installation in flush-mounted socket box-
es, it may also be surface-mounted by using the housing supplied.
10. Coding
The position of the rotary switch is illustrated in chapter 15 “Connection Diagram” on
page 5. The address of the switching channel can be set between A1 and P8 via the two
adjacent rotary switches (A).
The address for the night-time reduction command is permanently encoded in the B-
group; the channel number 1...8 may, however, only be selected with the third rotary
switch (B). If no night-time reduction is required, the channel of the B-group set at the ro-
tary switch must remain unassigned in the ProLine configuration software.
11. Putting into Service
Commissioning may only be carried out by an authorised trained technician. The DRT is
suitable for direct surface mounting on walls or for installation in flush-mounted socket
boxes. Follow the connection diagram on Page 8 when installing.
All lines to be connected must be dead. Connections between the Dupline signal and
earth potential will cause malfunctions and are not permissible. Check that the polarity of
the Dupline signal is correct. The following table illustrates the connection configuration:
In order to meet the requirements for protective low voltage, VDE0100, Part 410, should
be observed and put into practice during installation.
12. Indicators
Pin
Description
Pin
Description
1
Dupline signal co
()
2
Dupline signal conductor-
(Dupline-)
Indicator
Description
Red LED
Switching channel (heating command):
Off - Temperature exceeded / On - Temperature too low
