Establishment Of Electrical Connection Of The 3-Stage Switch (Optional); Alarm Input (Optional); Alarm Output (Optional) - Vaillant recoVAIR/3 SERIES Operating And Installation Manual

4 Assembly and installation
4.9 Establishment of Electrical Connection of the
3-stage Switch (optional)
In addition to the standard control unit, you can also use
a universal 3-stage switch to control the domestic venti-
lation unit. This must be potential-free (no voltage).
• Connect three lines as shown in fig. 4.15 to the clamps
"0↓", "D↑" and "H↑".
The following switch positions are possible:
Position Function
1 ("0") Control system with remote
control
2 ("D") Day position (fans stage 2)
3 ("H") HIGH position
(fans stage 3)
Table 4.3 Switch positions of the 3-stage switch
Switch BUS
0 D H -
+
0 D
H
1
Fig. 4.15 Electrical connection of the 3-stage switch
Key
1 Strain relief alarm outlet
28
4.10
The alarm input (connection "X 14" on the board) is
bridged when the unit is delivered. If the connection is
undone with an external potential-free switching contact
(break contact), both fans will be switched off. On the
display of the remote control you will find the message
"LOCK".
e
Electrical contact
↓
0 open
0↓ connected to D↑
• Remove the unit front cladding as described in
0↓ connected to H↑
• Now place the 2-core cable (minimum 0.35 mm
• Connect the lines to the connection "X 14" (alarm
h
0
D
H
4.11
The alarm output (connection "X 16" on the board) is
made of a potential-free switching contact with a resis-
tive load (Ohm) of maximum 2 A.
Fig. 4.16 Removal of cable insulation
• Remove the cable insulation as shown in fig. 4.16.
• Lead the cable through the strain relief (see fig. 4.15)

Alarm Input (optional)

Danger!
Risk of fatal electric shock from touching live
connections.
Pull the mains plug before starting to work on
the device.
section 4.6.
the respective cable routing to the PCB.
input) in accordance with figure 4.14 "Wiring scheme".
Note
When the contact is opened, the word "LOCK"
appears on the display of the remote control.
The fans on the domestic ventilation unit are
then switched off.

Alarm Output (optional)

Ø 4,5 - 10 mm
and screw them together.
Installation Manual recoVAIR/3 0020062918_03
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