Electrical installation
Installation and maintenance instructions ecoTEC plus 0020116700_01 31
8
> To start up the connected components, select the com-
ponents using diagnosis code "D.026" at installer level
(¬ section11.1).
8.5.2 Connect VR 40 – "2 from 7" multi-
functional module
You can connect additional components to the ecoTEC plus
using the Vaillant multi-functional module 2 in 7 (accesso-
ries).
> Fit the components in accordance with the correspond-
ing operating and installation instructions.
> Select diagnostics code "D.027" to actuate relay 1 on the
multi-functional module at installer level (¬section11.1).
> Select diagnostics code "D.028" to actuate relay 2 on the
multi-functional module at installer level (¬section11.1).
8.6 Actuating the circulation pump
demand-controlled
You can actuate the circulation pump for a domestic hot
water cylinder demand-controlled using the ecoTEC plus.
8.6.1 Installing the circulation pump
b
Caution.
Risk of damage caused by incorrect
installation.
Connecting wires that have been stripped
too far can cause short circuits and damage
the electronics if a strand accidentally
comes loose.
> Only strip the outer sheathing of flexible
cables for a maximum of 3cm to prevent
short circuits.
> Lay the lines correctly.
> Use strain reliefs.
> Perform the wiring in the same way as in ¬section8.4.
> Connect the supply line of the external button with ter-
minals X41/1
(0) and X41/6 (FB) of the PCB (¬fig.8.3
and 8.4).
i
The edge connector required for this is included
with your controller.
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