Vaillant VA 6-050 MXNHDI, Installation Manual, Page: 20 / 41

Multi Split Type Installation Manual
19 EN
10.6 Installation of the Fresh Air
Note!
Only applicable to the models indicated in table
10.1.
MODEL FRESH AIR
VA 6-035 MXNHKI YES
VA 6-050 MXNHKI YES
Table 10.1 Models with lines available for renewing fresh air.
The side opening allows installing pipes for air intake
from outside and pipe shunting to be installed (see
figure 10.3).
Fig. 10.3 Fresh air line.
Legend
1 Flange on the fresh air line
2 Fresh air line
Carry out the following operations:
• Select the lines. Use lines with the following
characteristics:
- Base material: flexible polyester with spring interior
or corrugated aluminium.
- Diameter: 101,6 mm.
- External anti-condensation lining: fibreglass, 12-25
mm thick.
• Install the lines.
10.7 Indoor Unit Assembly in the Ceiling
Note!
The indoor unit is fixed to the ceiling using hooks
and hanging bars (threaded varilla M10), with its
corresponding nuts, locknuts and washers.
• Draw the position of the fixing elements according to
the indicated measurements.
- Observe the minimum assembly distances (see
section 8.4).
• Adapt the length of the threaded rods to the correct
measurement.
• Mount the fixing bars in the points provided
(optionally, you can use hooks fixed to the ceiling and
hang the fixing bars from them).
Fig. 10.4 Indoor unit assembly diagram.
Legend
1 Indoor Unit
2 False ceiling
3 Decorative panel
4 Upper fixing nut
5 Indoor unit support
6 Nut-locknut set
7 Fixing bar
8 Fixing hook (optional)
D Distance of the hook to the ceiling (34 mm)
• Position a nut in each fixing bar (which will remain
above the unit support) and a nut-locknut set (which
will remain below the support). See assembly diagram
in figure 10.4.
Installation of the Cassette Indoor Unit 10