Vaillant VA 6-050 MXNHDI, Installation Manual

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Multi Split Type Installation Manual
13 EN
9.3.2 Handling the Coolant Pipes
Danger!
Danger of burns and eye injuries.
In the event of soldering, use suitable
protection equipment (protective soldering
mask, soldering gloves, solderer clothing).
Warning!
Danger of breakdowns or malfunction. Danger of
wear in the coolant pipes.
To ensure that the coolant pipes do not wear
take the following points into consideration:
- Use pipes specifically intended for cooling.
Note!
In specialised dealers you will find coolant pipes
which are thermally insulated as a Vaillant
accessory.
- Ensure that the pipes are clean, dry and polished on
the inside.
- The insulation of the pipes should be done using
specific insulation for cooling.
- Observe the minimum and maximum pipe distances
for each model.
- Do not bend the pipes where possible. When bending
them, keep the radius as wide as possible to minimise
load losses.
- If soldering, do so using strong welding (copper-silver
alloy). During the soldering process a stream of dry
nitrogen should be run through the inside of the pipes
in order to avoid rusting.
- Only cut the coolant pipes using pipe cutters and
always keep the pipe ends covered.
- Any flaring work should be performed meticulously in
order to avoid subsequent losses of gas through the
pipes.
- When reviving keep the pipe opening directed
downwards in order to prevent shavings from getting
into the pipes.
- Mount the joining tubes carefully, ensuring they
cannot become displaced. Ensure that they will not
cause traction in the joins.
- Equip the coolant pipes (inflow and outflow) separately
and with thick diffusion heat insulation.
- Carefully squeeze the flaring connector, centring the
flaring cone and the flanged nut. Applying excessive
force without correctly centring can damage the
thread and cause a reduction in the water tightness in
the join.
9.3.3 Handling the Condensed Water Pipe
Warning!
Danger of breakdowns or malfunction. Danger of
incorrect drainage of the condensed water and
wear of materials due to dripping water.
Take the following points into consideration:
- Ensure that air circulates through the condensed
water pipe in order to guarantee that the water can be
freely released. Otherwise, the condensed water could
leak through the indoor unit body.
- Mount the pipe without bending it in order to avoid
blockage.
- If the water pipe is channelled outdoors, ensure that it
is insulated against freezing.
- If the condensed water pipe is installed in a room, fit
thermal insulation.
- Avoid installing the condensed water pipe with an
ascending bend (see Figure 9.2).
Fig. 9.2 Avoid ascending bends.
- Avoid installing the condensed water pipe with it free
end submerged in water (see Figure 9.3).
Fig. 9.3 Avoiding submerging the end.
- Avoid installing the condensed water pipe with
crimping (see Figure 9.4).
Installation of the Wall Mounted Indoor Unit 9