Inspecting And Handling The Unit; Placing The Unit; Refrigerant Piping; Selection Of Piping Material And Refrigerant Branching Kit - Daikin REYQ18PY1 Installation Manual

<Front side>
h2
+
500
2
or more
Note
1.
An inverter air conditioner may cause electronic noise gener-
ated from AM broadcasting. Examine where to install the main
air conditioner and electric wires, keeping proper distances
away from stereo equipment, personal computers, etc.
Particularly for locations with weak reception, ensure there is a
distance of at least 3 meters for indoor remote controllers,
place power wiring and transmission wiring in conduits, and
ground the conduits.
(Refer to figure 3)
1. Indoor unit
2. Branch switch, overcurrent breaker
3. Remote controller
4. COOL/HEAT selector
5. Personal computer or radio
2.
When installing in a locations where there is heavy snowfall,
implement the following snow measures.
• Ensure the base is high enough that intakes are not clogged
by snow.
• Remove the rear intake grille to prevent snow from accumu-
lating on the fins.
3.
If condensate may drip on downstairs (or walkway) depending
on the floor condition, take a measure such as the installation of
central drain pan kit (sold separately).
4.
The refrigerant R410A itself is nontoxic, nonflammable and is
safe. If the refrigerant should leak however, its concentration
may exceed the allowable limit depending on room size. Due to
this it could be necessary to take measures against leakage.
See "14. CAUTION FOR REFRIGERANT LEAKS" for details.
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.
Decide on the transportation route.
3.
If a forklift is to be used, pass the forklift arms through the large
openings on the bottom of the unit. (Refer to figure 4)
4.
If hanging the unit, use a cloth sling to prevent damaging the unit.
Keeping the following points in mind, hang the unit following the
procedure shown in figure 5.
• Use a sling sufficiently strong to hold the mass of the unit.
• Use 2 belts of at least 8m long.
• Place extra cloth or boards in the locations where the casing
comes in contact with the sling to prevent damage.
• Hoist the unit making sure it is being lifted at its center of gravity.
5.
After installation, remove the transportation clasp (yellow)
attached to the large openings. (Refer to figure 4)
(Refer to figure 4)
1. Fork
2. Hole (large)
3. Transportation clasp (yellow)
4. Fixed screws of transportation clasp
(Refer to figure 5)
1. Belt sling
2. Filler cloth or Board
3. Hole (large)
4. Hole (small)
Note
Apply a filler cloth on a fork to prevent coating of the bottom frame from
coming off and rust from occurring when bringing the unit using a forklift.
English
<Suction side>
Service h1
+
space 2
or more
5.

PLACING THE UNIT

• Make sure the unit is installed level on a sufficiently strong base to
prevent vibration and noise. (Refer to figure 6)
• The base should support the unit with the extent larger than
hatched area in figure 7.
If protective rubber is to be attached, attach it to the whole face of
the base.
• The height of the base should be at least 150mm from the floor.
• 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.
(Refer to figure 6)
1. Independent base (four corner type)
2. Independent base (with center support type)
3. Beam base (Horizontal)
4. Beam base (Vertical)
5. Center of the product
(Refer to figure 7)
1. 4-15×22.5 (Hole for foundation bolt)
2. (Depth of product)
3. (Inner dimension of the base)
4. (Outer dimension of the base)
Model
8 · 10 · 12HP type
14 · 16HP type
Note
• When installing central drain pan kit (optional accessory), con-
struct the bace by independent base (with center support type) or
beam base (Horizontal) in figure 6.
• There are restrictions on the refrigerant pipe connecting order
between outdoor unit in the case of the multi system.
See "2-1 Combination" for detail.
• When installing on a roof, make sure the roof floor is strong
enough and be sure to water-proof all work.
• Make sure the area around the machine drains properly by setting
up drainage grooves around the foundation.
Drain water is sometimes discharged from the outdoor unit when
it is running.
• For anti-corrosion type, use nuts with resin washers. If the paint on
nut connections comes off, the anti-corrosion effect may decrease.
6.

REFRIGERANT PIPING

Note
• All field piping must be installed by a licensed refrigeration techni-
cian and must comply with relevant local and national regulations.
• After piping work is complete, do not under any circumstances open
the shutoff valve until "7. FIELD WIRING" and "10. CHECKING OF
DEVICE AND INSTALLATION CONDITIONS" are complete.
• Do not use flux when brazing the refrigerant piping. Use the phos-
phor copper brazing filler metal (BCuP-2 : JIS Z 3264, B-Cu93P-
710/795 : ISO 3677) 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.)
6-1 Selection of piping material and Refrigerant
branching kit
• Use only pipes which are clean inside and outside and which do
not accumulate harmful sulfur, oxidants, dirt, cutting oils, mois-
ture, or other contamination. (Foreign materials inside pipes
including oils for fabrication must be 30mg/10m or less.)
• Use the following items for the refrigerant piping.
Material : Jointless phosphor-deoxidized copper pipe
Size : See "6-5 Example of connection" to determine the
correct size.
Thickness : Select a thickness for the refrigerant piping which
complies with national and local laws.
For R410A, the design pressure is 4.0 MPa (40-bar).
A B
930 792
1240 1102
Resin washers
4