2 Product information
2.1
Safety advice
DANGER!
Danger due to electrical current
An electric shock can lead to burns and serious injury and
even death.
– Work on the electrics may only be carried out by trained
electricians.
– Switch off the mains voltage before carrying out work on
electrical parts.
– Switch off the mains voltage before opening the casing.
2.2
Intended use
You can use the basic unit 24 V for electronic control of your surface
heating. The basic unit converts the information by the connected room
thermostats to control signals for the actuators.
This function is guaranteed in combination with:
n
room thermostat model 1243.1 or 1243.4
n
and actuator model 1249.1
2.3
Product description
2.3.1
Functions
The basic unit controls all functions of the system and converts the
measured value transmitted by the room thermostat to control signals
for the actuators. For the operation of the basic unit, a 230 V mains con-
nection must be provided in the manifold cabinet.
To ensure proper functionality of the pump control, actuators with the
property "closed in de-energised state " are required.
The basic unit is connected to the mains by means of a separately avail-
able power pack (model 1247.5)
„Power pack“ on page 9 which con-
verts the 230 V mains voltage to 24 V.
All actuators and room thermostats connected via cable are directly
supplied with the required operating voltage. Additional mains connec-
tions are not required.
Product information
Basic unit 24 V
with pump module
5 from 17
