Correct Removal Of Condensate Water; Handling The Refrigerant Pipes; Correct Installation Of The Condensate Pipe Work - Vaillant VAI 3-025 WN Manual Del Usuario

INSTALLATION
9.3 Installation of the pipe work
9.3.1

Correct removal of condensate water

DANGER!
a
Danger of breakdowns or malfunction.
Danger of condensed water leakage.
In order to ensure that the unit drains correctly take
the recommendations described in this section into
account.
Methods for the removal of the condensed water which is
generated in the indoor unit:
- Condensed water can be allowed to drain naturally using the
natural fall of the condensed water pipe to a suitable drain
point. In order for it to be aesthetically pleasing, use a solid
pipework or trunking to cover the pipework.
- Alternative hidden installation solutions also exist.
- For example, using an external pump for removal of the
condensed water, carrying the condensed water to outside or
to main drainage system.
- By natural fall to a collection point which is then emptied
using a pump which operates when the tank is full, pumping
the water to a suitable drain point.
WARNING!
a
Danger of breakdowns or malfunction.
Danger of condensed water leakage.
To ensure that the unit drains properly using a natural
fall, the condensed water pipe must have a an
adequate fall from the indoor unit.
9.3.2

Handling the refrigerant pipes

DANGER!
a
Danger of burns and eye injuries.
When brazing pipe lines, use suitable protection
equipment (protective eye protection and mask,
welding gloves, flame proof clothing).
WARNING!
a
Danger of breakdowns or malfunction. Danger of
damage to refrigerant pipes through the use of
unsuitable materials.
- Use only pipes specifically intended for refrigeration and
R410A refrigerant.
NOTE:
i
In specialised dealers you will find refrigerant pipes and
the correct thermal insulation.
- Ensure that the refrigerant pipes are clean, dry and polished
on the inside.
- The insulation of the pipes should be done using specific
class 'O' insulation for cooling.
- Observe the minimum and maximum pipe lengths for each
model.
- 10 -
- Wherever possible avoid install excessive numbers of bends
in pipes. Do not over bend the pipe, keep the radius as wide
as possible to minimise load losses.
- When brazing pipes together, use only the correct brazing
materials. During the brazing process a stream of oxygen
free nitrogen should be run through the inside of the pipes in
order to avoid oxidisation forming inside the pipe connection.
- Only cut the coolant pipes using propriety pipe cutters,
ensuring no swarf enters the pipe, and always keep the
pipe ends sealed wherever possible to avoid moisture being
allowed to enter the pipe.
- Any flaring work should be performed meticulously in order
to create the correct connection and to avoid subsequent gas
leaks through the pipe connections.
- When reaming the cut pipe 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 during brazing. Ensure that there is no
strain on the pipe joints.
- Ensure that all pipework is insulated with the correct grade of
closed cell insulation and that all joints in the insulation are
sealed with insulation tape or glued.
- Carefully tighten the flaring connectors, centring the flaring
cone and the flanged nut. Applying excessive force without
correctly centring can damage the thread and may allow
water ingress into the connection.
9.3.3 Correct installation of the condensate pipe
work
WARNING!
a
Danger of breakdowns or malfunction. Danger of water
leaks and blockages from unit and pipework:
- Ensure that sufficient air breaks and traps are provided to
avoid water being retained within the indoor unit. Otherwise,
the condensed water could leak from the indoor unit.
- For gravity drains ensure fall is sufficient, the pipework is
adequately supported and does not sag and bends are of
large radius to avoid blockages.
- If the water pipe is run outdoors, ensure that it is insulated
against freezing.
- If the condensed water pipe runs through an un-heated
room, fit thermal insulation.
- Avoid installing the condensed water pipe with a rising bend
(see Figure 9.1).
VAI3-WN-I_EN - 07/14 - Vaillant