Daikin VRVIII REYQ-P8, Installation Manual

Page: 8 / 32

Installation manual
4
REYQ8~16P8Y1B
VRVIII System air conditioner
4PW39996-1A
4. I
NSPECTING AND HANDLING THE UNIT
At delivery, the packing 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 as
shown in
figure 4 .
4 Lift the unit preferably with a crane and 2 belts of at least 8 m
long as shown in
figure 4 .
Always use protectors to prevent belt damage and pay attention
to the position of the unit's centre of gravity.
A forklift can only be used for transport as long as the unit
remains on its pallet as shown in
figure 5 .
5 For placing the unit on its final position, a crane and 2 belts must
be used. These belts must be pulled through the small openings
on the bottom of the unit as shown in
figure 4 .
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.
■
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) and make sure the base under
the unit is larger than the grey marked area as indicated in
figure 3 .
■
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.
6. R
EFRIGERANT PIPING
1 Packaging material
2 Belt sling
3 Opening
4 Protector
NOTE Use a belt sling of
≤
20 mm wide that adequately
bears the weight of the unit.
Do not use stands to only support the corners. (See
figure 6)
1 Hole for foundation bolt
2 Inner dimension of the base
3 Distance between foundation bolt holes
4 Depth of unit
5 Outher dimension of the base
6 Longitudinal foundation dimension
7 Distance between foundation bolt holes
X Not allowed
O Allowed (units: mm)
■
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.
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 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.
Do not open stop valves until all field wiring is according to
the specifications (refer to
"8. Field wiring" on page 9 ), the
checking of the unit has been completed and all installation
conditions are fulfilled (refer to
"10. Checking of unit and
installation conditions" on page 14 ).
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.
20 mm
1