Vaillant recoVAIR/3 SERIES, Руководство по эксплуатации и установке

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Installation Manual recoVAIR/3 0020062918_03 28
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 Electrical contact
1 ("0") Control system with remote
control 0
↓
open
2 ("D") Day position (fans stage 2) 0
↓
connected to D
↑
3 ("H") HIGH position
(fans stage 3) 0
↓
connected to H
↑
Table 4.3 Switch positions of the 3-stage switch
H 0 D
Switch
- +
BUS
0
D
H
1
0
D
H
Fig. 4.15 Electrical connection of the 3-stage switch
Key
1 Strain relief alarm outlet
4.10 Alarm Input (optional)
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
Danger!
Risk of fatal electric shock from touching live
connections.
Pull the mains plug before starting to work on
the device.
• Remove the unit front cladding as described in
section 4.6.
• Now place the 2-core cable (minimum 0.35 mm 2 ) in
the respective cable routing to the PCB.
• Connect the lines to the connection "X 14" (alarm
input) in accordance with figure 4.14 "Wiring scheme".
h
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.
4.11 Alarm Output (optional)
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.
40 mm
Ø 4,5 - 10 mm
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)
and screw them together.
4 Assembly and installation