Inspecting And Handling The Unit; Unpacking And Placing The Unit; Refrigerant Piping - Panasonic U-5MX4XPQ Manual De Instalación

4. I
NSPECTING AND HANDLING THE UNIT
At delivery, the package should be checked and any damage should
be reported immediately to the carrier claims agent.
When handling the unit, take into account the following:
1 Fragile, handle the unit with care.
Keep the unit upright in order to avoid compressor
damage.
2 Choose on beforehand the path along which the unit is to be
brought in.
3 Bring the unit as close as possible to its final installation position
in its original package to prevent damage during transport. (See
figure 4)
1 Packaging material
2 Opening (large)
3 Belt sling
4 Opening (small) (40x45)
5 Protector
4 Lift the unit preferably with a crane and 2 belts of at least 8 m
long. (See figure 4)
Always use protectors to prevent belt damage and pay attention
to the position of the unit's centre of gravity.
Use a belt sling of ≤20 mm wide that adequately
NOTE
bears the weight of the unit.
5 If a forklift is to be used, preferably transport the unit with pallet
first, then pass the forklift arms through the large rectangular
openings on the bottom of the unit. (See figure 5)
5.1 From the moment you use a forklift to move the unit to its final
position, lift the unit under the pallet.
5.2 Once at final position, unpack the unit and pass the forklift arms
through the large rectangular openings on the bottom of the unit.
NOTE Use filler cloth on the forklift arms to prevent
damaging the unit. If the paint on the bottom
frame peels off, the anti corrosion effect may
decrease.
5. U
NPACKING AND PLACING THE UNIT
Remove the four screws fixing the unit to the pallet.
Make sure the unit is installed level on a sufficiently strong base
to prevent vibration and noise.
Do not use stands to only support the corners. (See
figure 7)
X Not allowed (except for U-5MX4)
O Allowed (units: mm)
Make sure the base under the unit is larger than the 765 mm of
the unit depth. (See figure 3)
The height of the foundation must at least be 150 mm from the
floor.
The unit must be installed on a solid longitudinal foundation
(steelbeam frame or concrete) as indicated in figure 3.
Model
U-5MX4
U-8~12MX4
U-14~18MX4
Support the unit with a foundation of 67 mm wide or more. (The
support leg of the unit is 67 mm wide, see figure 3).
U-5~18MX4XPQ
Urban Multi air conditioner
4PW28163-1C
A B
635 497
930 792
1240 1102
Fasten the unit in place using four
foundation bolts M12. It is best to screw in
the foundation bolts until their length
remains 20 mm above the foundation
surface.
Prepare a water drainage channel around the
foundation to drain waste water from around the unit.
If the unit is to be installed on a roof, check the
strength of the roof and its drainage facilities first.
If the unit is to be installed on a frame, install the
waterproofing board within a distance of 150 mm
under the unit in order to prevent infiltration of water
coming from under the unit.
When installed in a corrosive
environment, use a nut with
plastic washer (1) to protect the
nut tightening part from rust.
6. R
EFRIGERANT PIPING
Do not insert fingers, rods or other objects into the air
inlet or outlet. When the fan is rotating at high speed, it
will cause injury.
Use R410A to add refrigerant.
All field piping must be installed by a licensed refrigeration
technician and must comply with relevant local and
national regulations.
Caution to be taken when brazing refrigerant piping
Do not use flux when brazing copper-to-copper refrigerant
piping. (Particularly for the HFC refrigerant piping)
Therefore, use the phosphor copper brazing filler metal
(BCuP) which does not require flux.
Flux has extremely harmful influence on refrigerant piping
systems. For instance, if the chlorine based flux is used, it
will cause pipe corrosion or, in particular, if the flux
contains fluorine, it will damage the refrigerant oil.
Be sure to perform a nitrogen blow when brazing. Brazing
without performing nitrogen replacement or releasing
nitrogen into the piping will create large quantities of
oxidized film on the inside of the pipes, adversely affecting
valves and compressors in the refrigerating system and
preventing normal operation.
After completing the installation work, check that the
refrigerant gas does not leak.
Toxic gas may be produced if the refrigerant gas leaks into
the room and comes in contact with a source of fire.
Ventilate the area immediately in the event of a leak.
In the event of a leak, do not touch the leaked refrigerant
directly. Frostbite may be caused.
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Installation manual
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