Connecting Controllers To The Electronic System; Connecting Additional Components Via Vr 40 - Connecting A "2 In 7" Multi-Functional Module - Vaillant ecoTEC VU Installation And Maintenance Instructions Manual

8.4.2 Connecting controllers to the electronic
system
Caution.
b
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 3 cm to prevent
short circuits.
> Lay the lines correctly.
> Use strain reliefs.
Caution.
b
Risk of damage caused by incorrect
installation.
A mains voltage at the incorrect plug termi-
nals on the ProE system can destroy the
electronics.
> Do not connect a mains voltage to the
eBUS terminals (+/-).
i
Make sure that the conductors are securely fas-
tened to the plug terminals of the ProE plug.
> Open the electronics box (¬ section 8.2).
> Route the supply lines of the components to be con-
nected (e.g. external controllers, external sensors)
through the left cable duct (¬ fig. 8.1, pos. 4) on the
underside of the boiler.
> Use the strain reliefs provided.
> Shorten the supply lines as necessary.
> Only strip the outer sheathing of flexible cables to a
maximum of 3 cm.
> Ensure inner conductor insulation is not damaged during
stripping of outer sheathing.
> Only strip inner conductors sufficient to make good
sound connections.
> Fit the stripped ends of the conductors with crimp pin
terminals to ensure a secure connection free from loose
strands to prevent short circuits.
> Connect the ProE plug to the supply lines of the control-
ler using a screwdriver.
> Insert the ProE plug into the associated PCB slot
(¬ fig. 8.3).
> Lay the lines correctly.
> Secure the cable in the electronics box using the strain
reliefs.
> If you connect a 230 V AC time and temperature control
to the boiler, then remove the bridge at input 24 V = RT
(X100 or X106) if a bridge exists.
Installation and maintenance instructions ecoTEC 0020173113_01
Electrical installation
> If you connect a weather compensator or room tempera-
ture control via eBUS, then bridge input 24 V = RT (X100
or X106) if no bridge exists.
> I If using low voltage (24 V) controls connect these in
place of the bridge marked RT 24 V (X100 or X106).
> Close the electronics box (¬ section 8.1).
> In order to achieve pump operating mode "Comfort"
(continuously running pump) for multi-circuit controllers,
change diagnosis code D.018 Pump operating mode
from 3 = "Eco" (intermittent pump) to 1 = "Comfort"
(¬ section 11.1.2).
i
Please note that the bridge at the ProE plug
(Burner off) must be removed when connecting
a maximum thermostat (contact thermostat) for
underfloor heating.
8.5 Connecting additional components via
VR 40 – connecting a "2 in 7" multi-
functional module
Caution.
b
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 3 cm to prevent
short circuits.
> Lay the lines correctly.
> Use strain reliefs.
You can connect additional components to the ecoTEC
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 diagnostic code "D.027" to actuate relay 1 on the
multi-functional module at installer level (¬ section 11.1).
> Select diagnostic code "D.028" to actuate relay 2 on the
multi-functional module at installer level (¬ section 11.1).
The following components can be actuated:
1 = Circulation pump
2 = External pump
3 = Cylinder charging pump
4 = Extractor hood
5 = External solenoid valve
6 = External fault message
7 = Solar pump (not active)
8 = Remote control eBUS (not active)
9 = Legionella protection pump (not active)
10 = Collective solar valve (not active)
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