Vaillant aroSTOR VWL B 270/5 Instrucciones De Instalación Y Mantenimiento página 71

2. Remove the protective cover. (→ Page 66)
3. Remove the black protective cover from the PCB.
4. Remove the red bridge from the energy supply com-
pany's connection terminal (1) (ESCO contact).
5. Guide the cable through the grommet on the rear of
the product and through the grommet on the rear of the
electronics box.
Note
Ensure that the grommet is slit open as little
as possible to prevent air escaping while the
product is in operation.
6. Use the plug (1) to establish the connection to the elec-
tricity meter's control contact.
–
Twin-core cable: 0.75 mm²
7. Inform the end user if the product is controlled via the
low-tariff contact, so that any programming of operating
times does not conflict with the high- and low-tariff peri-
ods.
5.3.3 Controlling the fan externally
Condition: Installing a partial pipe system
▶
If you want to keep a room aerated permanently, even
when the product is switched off, you can connect the
contact of the external fan control system (humidistat).
8000015884_00 Installation and maintenance instructions
X3 T air
X4 T degiv
X5 T eau
X2 HP
2
1
1
X3 T air
1 X4 T degiv
X5 T eau
X2 HP
2
2
1
Caution.
Risk of material damage caused by incor-
rect handling.
Only external control contacts are compat-
ible.
▶
Only connect the external control contacts
to potential-free contacts.
▶
In particular, do not connect any live
cables.
▶
Remove the covering hood. (→ Page 66)
▶
Remove the black protective cover from the PCB.
▶
Guide the cable through the grommet on the rear of the
product and through the grommet on the rear of the elec-
tronics box.
▶
Connect the humidistat cable to the plug (2) on the PCB
(1).
◁
Contact opened: Fan not running
◁
Contact closed: Fan running
▶
In the menu, set the "Fan with external control" mode to
FAN MODE 3.
5.3.4 Connecting the photovoltaic installation
Note
The PV function and the management outside of
the power consumption cannot be used in parallel
as they use the same contact.
Condition: Existing photovoltaic installation
This function can make use of the self-sufficiency optimised
by the photovoltaic installation to supply the heat pump and
the immersion heater and to heat up the water in the cylin-
der.
1 Connection terminal 2
Caution.
Risk of material damage caused by incor-
rect handling.
Only external control contacts are compat-
ible.
▶
Only connect the external control contacts
to potential-free contacts.
▶
In particular, do not connect any live
cables.
X3 T air
X4 T degiv
X5 T eau
X2 HP
1
2
2
1
2 Connection terminal 1
71