Inspecting And Handling The Unit; Unpacking And Placing The Unit; Refrigerant Piping; Selection Of Piping Material - Daikin VRV II RXYQ5MY1B Installation Manual

4.

INSPECTING 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 the path along which the unit is to be brought in ahead of
time.
3.
If a forklift it to be used, pass the forklift arms through the large
openings on the bottom of the unit.
4.
Lift the unit preferably with a crane and 2 belts of at least 8m long.
5.
When lifting the unit with a crane, always use protectors to prevent
belt damage and pay attention to the position of the unit's centre
of gravity.
6.
After installation, remove the transport clasps attached to the
large openings.
7.
Bring the unit as close to its final installation position in its original
package to prevent damage during transport.
(Refer to figure 3)
1. Packaging material
2. Forklift
3. Opening (Large)
4. Belt sling
5. Opening (Small) (40×30)
6. Wear plate
7. Removal of shipping brackets
8. Shipping bracket (Remove the screws.)
5.

UNPACKING AND PLACING THE UNIT

• Make sure the unit is installed level on a sufficiently strong base to
prevent vibration and noise.
• Secure the unit to its base using foundation bolts. (Use four com-
mercially available M12-type foundation bolts, nuts, and washers.)
• The foundation bolts should be inserted
20 mm.
• Make sure the base under the unit extended
more than 765mm behind the unit.
• The height of the base should be at least 150mm from the floor.
• The unit must be installed on a solid longitudinal foundation
(steelbeam frame or concrete) as indicated in figure 4.
(Refer to figure 4)
1. Foundation bolt point (φ15 dia. : 4 positions)
2. Depth of product
3. Shape of indoor unit's support leg and foundation bolt
positions
Model
Q5 type
Q8 · 10 type
Q12 · 14 · 16 type
DO NOT USE STANDS TO SUPPORT THE CORNERS
(Refer to figure 5)
1. Do not use stands to support the corners.
Caution
1.
Prepare a water drainage channel around the foundation to
drain waste water from around the unit.
2.
If the unit is to be installed on a roof, check the strength of the
roof and its drainage facilities first.
3.
If the unit is to be installed on a frame, install the waterproof-
ing board within a distance of 150mm under the unit in order
to prevent infiltration of water coming from under the unit.
English
[Precaution]
• When installing on a roof, make sure the roof floor is strong
• Make sure the area around the machine drains properly by setting
• Block all gaps in the holes for passing out piping and wiring using
Ex: passing piping out through the front
6.
Note
• Use R410A only when adding refrigerant.
• Installation tools:
A B
635 497
930 792
1240 1102

6-1 Selection of piping material

1.
2.
3.
enough and be sure to water-proof all work.
up drainage grooves around the foundation.
(Drain water is sometimes discharged from the outdoor unit when
it is running.)
sealing material (locally procured).
(Small animals may enter the machine.)
1
2
1. Plug the areas marked with "
(When the piping is routed from the front panel.)
2. Gas side piping
3. Liquid side piping

REFRIGERANT PIPING

Caution
After completing installation, be sure to open the valve.
(See 6-6 Additional refrigerant charge for details) (Operating
the unit with the valve shut will break the compressor.)
Use R410A to add refrigerant. (The R410A refrigerant cylinder has
a pink stripe painted around it.)
All field piping must be installed by a licensed refrigeration techni-
cian 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 phos-
phor copper brazing filter metal(BCuP) which does not require flux.
(Flux has extremely harmful influence on refrigerant piping sys-
tems. 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.)
Make sure to use installation tools (gauge manifold charge hose,
etc.) that are exclusively used for R410A installations to withstand
the pressure and to prevent foreign materials (e.g. mineral oils
such as SUNISO and moisture) from mixing into the system.
(The screw specifications differ for R410A and R407C.)
Vacuum pump (use a 2-stage vacuum pump with a non-return valve):
1.
Make sure the pump oil does not flow oppositely into the sys-
tem while the pump is not working.
2.
Use a vacuum pump which can evacuate to –100.7 kPa (5Torr,
–755mmHg).
Foreign materials inside pipes (including oils for fabrication) must
be 30mg/10m or less.
Use the following material specification for refrigerant pipping:
• construction material: Phosphoric acid deoxidized seamless
copper for refrigerant.
• size: Determine the proper size referring to chapter "Example
of connection".
• The wall thickness of the refrigerant piping should comply with
relevant local and national regulations. For R410A the design
pressure is 3.8 MPa.
Make sure to use the particular branches of piping that have been
selected referring to chapter "Example of connection".
3
".
6