Correct Installation Of Indoor Unit Refrigerant Pipe Work - Vaillant VAI 3-025 WN Manual Del Usuario

• Case B: Running the pipework out of either side or the
bottom of the unit.
In this case holes do not have to made in the wall since the
indoor unit body has knock outs which can be opened to allow
the pipes to exit the unit: choose the most convenient one for
the desired outlet position (see Figures 9.6 and 9.7).
- Carefully break the knock out in the casing using pliers.
4
3
2
Fig. 9.8 Windows for the installation of the pipes.
Legend
1 Exit for right piping
2 Securing with adhesive tape
3 Exit for indoor piping
4 Exit for left piping
9.3.5 Correct installation of indoor unit
refrigerant pipe work
If installing the rear exiting piping:
• Place a seal ring for the hole in the piping and insert the
coolant pipes with the condensed water pipe through the
hole.
• Remember to seal the hole inside and out properly after
installing the pipes.
• Carefully bend the installation pipe in the right direction,
taking care not to overbend or kink the pipe.
WARNING:
b
Danger of breakdowns or malfunction.
Danger of damage to the coolant pipes.
Bend the pipe carefully to prevent kinking or breaks.
• There should be sufficient pipe tails on the indoor unit to go
through the wall width. If this is not the case connect further
lengths of pipe as required. Carefully feed the pipe tails
through the holes together with the condensate pipework and
interconnecting electrical cable.
• Hang the indoor unit on the top edge of the mounting
plate.
• Tilt the lower part of the indoor unit forwards and insert an
auxiliary tool (e.g. a piece of wood) between the mounting
plate and the unit (see Figure 9.9) to allow access to the unit
connections.
VAI3-WN-I_EN - 07/14 - Vaillant
Fig. 9.9
1
• Connect the coolant pipes from the outdoor unit and the
condensed water hose to the installation drain.
• Insulate the coolant piping and joints correctly and
separately. To do so, cover any possible cuts with
masking tape or insulate any bare coolant piping with the
corresponding insulation material suitable for Air to Air heat
pumps installations (for connection of the electrical wiring
see section 11).
Fig. 9.10
Legend
1 Coolant pipe
2 Piping support plate
3 Indoor/outdoor electric cable
4 Drain pipe
5 Heat-resistant material
• For pipework exiting from the right hand side and bottom of
the unit extend the pipework through the relevant knock out
before hanging unit (see section 9.3.6).
• For pipework exiting from the left of the unit, make the
connections at the rear of the unit first before hanging the
unit (see section 9.3.6).
i
Assembling the indoor unit.
5
4
Section showing pipework run behind indoor unit.
NOTE:
The flare connections should be, where possible,
accessible to allow leak test and future access.
INSTALLATION
1
2
3
EN
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