Specifications
RXYQQ8~20T7Y1B
VRV IV System Air Conditioner
4P345099-1 – 2013.04
Installation and operation manual
11
1 Hole for foundation bolt
2 Inner dimension of the base
3 Distance between foundation bolt holes
4 Depth of unit
5 Outer dimension of the base
6 Longitudinal foundation dimension
7 Distance between foundation bolt holes
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.
8.5. Method for removing transportation stay (only for
RXYQQ14~20)
The yellow transportation stay installed over the compressor leg for
protecting the unit during transport must be removed. Proceed as
shown in the figure and procedure below.
1 Slightly loosen the fixing nut (A).
2 Remove the transportation stay (B) as shown in the figure below.
3 Tighten the fixing nut (A) again (12.3 N•m).
9. Refrigerant pipe size and allowable
pipe length
9.1. General information
9.2. Selection of piping material
Foreign materials inside pipes (including oils for fabrication)
must be
≤
30 mg/10 m.
Temper grade: use piping with temper grade in function of the
pipe diameter as listed in table below.
8~12 HP 14~20 HP
AA 766 1076
AB 992 1302
NOTICE
Prepare a water drainage channel around the
foundation to drain waste water from around the unit.
During heating operation and when the outdoor
temperatures are negative, the drained water from the
outdoor unit will freeze up. If the water drainage is not
taken care of, the area around the unit might be very
slippery.
When installed in a corrosive
environment, use a nut with
plastic washer (1) to protect the
nut tightening part from rust.
NOTICE
If the unit is operated with the transportation stay attached,
abnormal vibration or noise may be generated.
729
929
AB
AA
1
2
34567
(mm)
20 mm
1
1
3 (12.3 N·m)
2
1
3 (12.3 N·m)
2
A
B
NOTICE
The refrigerant R410A requires strict cautions for keeping
the system clean, dry and tight.
Clean and dry: foreign materials (including mineral
oils or moisture) should be prevented from getting
mixed into the system.
Tight: R410A does not contain any chlorine, does not
destroy the ozone layer, and does not reduce earth's
protection against harmful ultraviolet radiation. R410A
can contribute slightly to the greenhouse effect if it is
released. Therefore we should take special attention
to check the tightness of the installation.
NOTICE
When existing field piping is re-used, the design pressure
of the piping has to be 33 bar (3.3 MPa) or higher.
INFORMATION
The RXYQQ unit will limit the pressure on the field piping
to 33 bar. Inside the outdoor unit, the design pressure is
40 bar.
NOTICE
Piping and other pressure containing parts shall comply
with the applicable legislation and shall be suitable for
refrigerant. Use phosphoric acid deoxidised seamless
copper for refrigerant.
NOTICE
Installation shall be done by a licensed installer, the choice
of materials and installation shall conform completely with
the applicable national and international codes.
In Europe, EN 378 is the applicable standard that shall be
used.
Pipe Ø (mm) Temper grade of piping material
≤
15.9 O (annealed)
≥19.1 1/2H (half hard)