Vaillant VA 6-050 MXNHDI, Installation Manual, Page: 22 / 41

Multi Split Type Installation Manual
21 EN
11 Installation of the Duct Indoor Unit
11.1 Initial check
- Install the indoor unit leaving sufficient
space around the same as to allow handling and
maintenance tasks, as shown in the figure.
- Do not allow obstacles to block the air connection
or discharge flow.
- Do not install the indoor unit in a machinery
workshop or kitchen in which there is oil or fumes in
the air which may flow towards the indoor unit. The
oil will become deposited on the heat interchanger,
resulting in poor performance by the unit. It may
even result the deforming or breakage of the plastic
parts of the indoor unit.
-
Pay special care with regards to the following
points when the indoor unit is installed in a hospital
or any other area in which there are electromagnetic
waves from medical equipment:
A) Do not install the indoor unit in a place in which
the electromagnetic waves will have a direct
influence on the electrical box, on the remote
control switch or on the remote control cable.
B) Install the unit as far away as possible from the
source of electromagnetic waves. Place it at a
distance of at least 3 metres.
C) Install a noise filter when the power source
produces unpleasant noise.
D) Choose the final location and the installation
direction of the internal unit with special attention
to the pipes and cables and to maintenance.
E) When determining the location of the indoor unit,
give consideration to the air conducts network,
favouring the distribution of the same.
11.2 Attachment of the indoor unit
Mount the suitable attachments for each type of
structure, paying special attention to the possible
transmission of vibration and noise, installing, if
necessary, anti-vibration and soundproofing elements.
11.3 Installation of the indoor unit
- Introduce and twist a nut on each of the rods.
- Raise the indoor unit, introducing the rods in the
suspension support holes.
- Position a washer and a nut on each of the rods.
- Level the machine and secure it, tightening in such a
manner as one nut pressures the other.
- We recommend positioning a counternut for the nut
placed on the lower part of the suspension rods.
- This indoor unit is initially designed for positioning in
false ceilings; when installing in an area of direct access,
protect the electrical connection strip in order to prevent
accidents.
11.4 Installation of the drainage pipe
- Take special care when installing the drainage pipes
of the unit, since problems with the same may result in
spillage of the condensed water of the evaporator. The
unit is equipped with a drainage connection.
- Do not place the drainage pipe in an ascending
position, since the drainage water would return to the
unit and spill over when the unit is halted.
- Do not connect the drainage pipe to the sanitary
outflows, waste water pipes or any other drainage pipe
without installing a siphon.
- When the drainage pipe is connected to other indoor
units, the connection positions of each unit must be
higher than the common drainage pipe. The length of the
common pipe must correspond with the size and number
of existing units.
11.5 Hanging the indoor unit
Mount the unit as shown in the figure.
Parts supplied by the installer:
- Rod, nut and washer.
Figure 11.1
Note!
It is important to place a siphon on
each outflow.
Installation of the Duct type Indoor Unit 11
Suspension
support
False ceiling
UNIT
Suspension rod Suspension rod Suspension rod Suspension rod Suspension rod Suspension rod
Nut and washer