ecoTEC exclusive installation and maintenance instructions / 0020017768_04
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5.10.2 Connection of controllers, accessories and
external installation components
The following controllers, accessories and installation
components can be connected to the ecoTEC exclusive
(see Table 5.2).
The installation should be carried out in accordance with the
individual instruction manual. The required connections to
the electronic system of the boiler (e.g. for external control-
lers, external sensors etc.) should be undertaken as follows:
• Remove the front cover of the device, and lower the
electronic box forward.
• Unclip the rear cover of the electronic box and hinge
the cover upwards.
• Insert the connection lines of the components to be
connected through the cable openings (
1
) on the left
hand side of the underside of the appliance.
• Then insert the connection lines through the cable
openings (
2
) into the electronic box and cut them to
length.
1
2
Fig. 5.12 Opening the switchgear box rear wall
- + 7 8 9
L N
3 4 5
- + 7 8 9
L N
3 4 5
Fig. 5.13 Example for cable routing
• Remove the insulation over a length of 2 - 3 cm and
insulate the cores.
• Connect the connection cable in accordance with
Table 5.2 and Fig. 5.13 to the relevant screwed termi-
nals in the electronic system.
a
Caution!
Do not connect mains voltage to the terminals
7, 8, 9! Danger of destroying the electronics!
h
Note!
There is no provision set in the factory for
connection of an installation thermostat for
underfloor heating.
h
Note!
Make sure that the connection cables are
securely fastened in to the screw terminals.
5.10.3 External electrical controllers (non eBUS)
The boiler connections 3, 4 and 5 serve for the connec-
tion of external controllers, for example a timer and/or
a room thermostat. The connections 3 and 4 are con-
nected to each other in the factory. If external control-
lers are used, this connection must be removed and the
controllers must be connected to connections 3 and 4.
The connection 5 is an additional neutral line for exter-
nal neutral lines, for example for the sensor of a room
thermostat.
5 Installation
