- Open the front lid on the indoor unit by pulling upwards on it.
- Remove the wiring cover on the right of the body by
unscrewing it.
- Insert the cable from outside through the hole in the indoor
unit where the refrigerant pipe is already connected.
- Pass the electrical cable from the rear of the indoor unit
through the specific hole in the front. Connect the cables in
the indoor unit terminal space according to the corresponding
connection layout. (Figure 11.4 and 11.5).
- Check that the cables are correctly secured and connected.
Then mount the wiring cover.
11.4
Electric connection to the outdoor unit
WARNING!
a
Danger of breakdowns or malfunction. If the fuse on
the PC board is blown please change it with type
T. 25A/250V.
Fig. 11.2
Electric connection to the outdoor unit 3-060 W2NO.
VAI3-MWN-I_EN - 09/14 - Vaillant
Fig. 11.3
Electric connection to the outdoor unit 3-085 W4NO.
• Remove the protective covering in front of the electrical
connections in the outdoor unit.
• Loosen the screws in the cable retainer and fully insert the
cable ensuring the cable sheath extends past the cable
retainer before tightening the screws to clamp the cable.
WARNING!
a
Danger of malfunction and breakdowns resulting from
water penetration.
Always terminate the interconnecting cable from below
the cable entry to avoid water penetration into the
terminal box.
WARNING!
a
Danger of malfunction and breakdowns resulting from
short-circuits.
• Check the cable retainer is sufficiently tight to avoid undue
strain on the connections.
• Check that the cables are correctly secured and connected.
• Replace the protective wiring cover.
INSTALLATION
EN
- 17 -