Correct Installation Of Indoor Unit Refrigerant Pipe Work; Installation Of The Indoor Unit Body - Vaillant VAI 6-025 WN Installation Manual

INSTALLATION
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.
b WARNING!
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.
Fig. 9.9 Assembling the indoor unit.
• 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).
12
5
4
Fig. 9.10 Section showing pipework run behind indoor unit.
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 NOTE!
The flare connections should be, where possible,
accessible to allow leak test and future access.
9.3.6

Installation of the indoor unit body

• Check that the installation has been carried out correctly
and that there are no leaks (see section 12.1).
• Securely hang the indoor unit body onto the upper
notches of the mounting plate. Briefly move the body from
side to side to verify that it is secure.
• Lift the body up slightly from underneath, press it onto the
mounting plate and then lower it vertically. The body will fit
into the lower supports on the mounting plate.
• Check that the indoor unit is properly secured.
• In the event that the body does not slot into the supports
properly, repeat this process.
• Do not use excessive force as this may damage the fixing
lugs, ensure that the pipework is not trapped behind the
unit.
1
2
3
VAI 6 WN-I_EN - 06/14 - Vaillant