Fujitsu AJ**A72LBTF, AJ*A90LBTF, AJ*126LBTF, AJ*A72UBTF, AJ*A90UBTF Installation Instruction Sheet
...
En-1
English
Refrigerant
R410A
INSTALLATION INSTRUCTION SHEET
(PART NO. 9374241033)
Multi Air Conditioning System
for Buildings (VRF System)
OUTDOOR MODEL
AJ A72LBTF
MASTER AJ
A90LBTF
AJ
126LBTF
AJ
A72UBTF
SLAVE AJ
A90UBTF
AJ
126UBTF
Contents
1. SAFETY PRECAUTIONS ......................................................................... 2
2. PRECAUTIONS FOR USING THE ALTERNATIVE REFRIGERANT....... 3
3. ACCESSORIES ........................................................................................ 4
4. INSTALLATION WORK ............................................................................ 5
4.1. SELECTING AN INSTALLATION LOCATION .............................................. 5
4.2. TRANSPORTING THE PRODUCT .............................................................. 6
4.3. INSTALLATION DIMENSIONS ..................................................................... 7
4.4 INSTALLATION THE UNIT ........................................................................... 9
4.5. SYSTEM LAYOUT...................................................................................... 10
4.6. PIPE SELECTION...................................................................................... 11
4.7. PIPE INSTALLATION ................................................................................. 12
4.8. INSTALLING INSULATION ........................................................................ 17
4.9. DRAIN PROCESSING ............................................................................... 17
4.10. ELECTRICAL WIRING............................................................................... 18
4.11. FIELD SETTING ........................................................................................ 23
5. CHARGING WITH REFRIGERANT ........................................................ 28
5.1. SEALING TEST ......................................................................................... 28
5.2. VACUUM PROCESS ................................................................................. 29
5.3. ADDITIONAL CHARGING ......................................................................... 29
6. TEST RUN ............................................................................................... 31
6.1. PRE-TEST RUN CHECK ITEMS ............................................................... 31
6.2. TEST RUN METHOD ................................................................................. 31
6.3. CHECKLIST ............................................................................................... 31
7. ERROR DISPLAY ................................................................................... 32
7.1. NORMAL OPERATION MODE .................................................................. 32
7.2. ERROR OPERATION MODE..................................................................... 33
8. PUMP DOWN ..........................................................................................34
9. OPTION PARTS ...................................................................................... 35
10. INFORMATION ....................................................................................... 36
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1. SAFETY PRECAUTIONS
• Be sure to read this Sheet thoroughly before installation.
• The warnings and precautions indicated in this Sheet contain important information pertaining to your safety. Be sure to observe
them.
• After installing the unit, perform a test run to make sure the unit operates normally. Then, explain to the customer how to operate and
maintain the unit.
• Hand this Sheet, together with the Operating Manual to the customer.
Request the customer to keep them on hand for future use, such as for relocating or repairing the unit.
• Request your dealer or a professional installer to install the unit in accordance with this Sheet.
An improperly installed unit can cause serious accidents such as water leakage, electric shock, or fire.
If the unit is installed in disregard of the instructions in the Installation Instruction Sheet, it will void the
manufacturer’s warranty.
• For installation purposes, be sure to use the parts supplied by the manufacturer or other prescribed parts.
The use of non-prescribed parts can cause serious accidents such as the unit to fall, water leakage, electric
shock, or fire.
• To install a unit that uses the R410A refrigerant, use dedicated tools and piping materials that have been
manufactured specifically for R410A use.
Because the pressure of the R410A refrigerant is approximately 1.6 times higher than the R22, failure to use
dedicated piping material or improper installation can cause rupture or injury.
Furthermore, it can cause serious accidents such as water leakage, electric shock, or fire.
• Do not introduce any substance other than the prescribed refrigerant into the refrigeration cycle.
If air enters the refrigeration cycle, the pressure in the refrigeration cycle will become abnormally high and
cause the piping to rupture.
• Be sure to install the unit as prescribed, so that it can withstand earthquakes and typhoons or other strong
winds.
Improper installation can cause the unit to topple or fall, or other accidents.
• If there is a refrigerant leakage, make sure that it does not exceed the concentration limit.
If a refrigerant leakage exceeds the concentration limit, it can lead to accidents such as oxygen starvation.
• If a refrigerant leakage occurs during operation, immediately vacate the premises and thoroughly ventilate
the area.
If the refrigerant is exposed to fire, it will create a hazardous gas.
• Electrical work must be performed in accordance with this Sheet by a person certified under the national or
regional regulations. Be sure to use a dedicated circuit for the unit.
An insufficient power supply circuit or improperly performed electrical work can cause serious accidents
such as electric shock or fire.
• For wiring, use the prescribed type of wires, connect them securely, making sure that there are no external
forces of the wires applied to the terminal connections.
Improperly connected or secured wires can cause serious accidents such as overheating the terminals,
electric shock, or fire.
• Securely install the electrical box cover on the unit.
An improperly installed electrical box cover can cause serious accidents such as electric shock or fire through
exposure to dust or water.
• Do not turn ON the power until all work has been completed.
Turning ON the power before the work is completed can cause serious accidents such as electric shock or
fire.
• After the installation, make sure there is no refrigerant leakage.
If the refrigerant leaks into the room and becomes exposed to a source of fire such as a fan heater, stove, or
burner, it will create a hazardous gas.
WARNING!
This mark indicates procedures which, if improperly performed, might lead to the death or serious
injury of the user.
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• Do not install the unit in the following areas:
• Area with high salt content, such as at the seaside.
It will deteriorate metal parts, causing the parts to fall or the unit to leak water.
• Area filled with mineral oil or containing a large amount of splashed oil or steam, such as a kitchen.
It will deteriorate plastic parts, causing the parts to fall or the unit to leak water.
• Area that generates substances that adversely affect the equipment, such as sulfuric gas, chlorine gas,
acid, or alkali.
It will cause the copper pipes and brazed joints to corrode, which can cause refrigerant leakage.
• Area containing equipment that generates electromagnetic interference.
It will cause the control system to malfunction, preventing the unit from operating normally.
• Area that can cause combustible gas to leak, contains suspended carbon fibers or flammable dust, or
volatile inflammables such as paint thinner or gasoline.
If gas leaks and settles around the unit, it can cause a fire.
• Do not use the unit for special purposes, such as storing food, raising animals, growing plants, or preserving precision devices or art objects.
It can degrade the quality of the preserved or stored objects.
• Ground the unit.
Do not connect the ground wire to a gas pipe, water pipe, lightning rod, or a telephone ground wire.
Improper grounding may cause electric shock.
• Install a ground leakage breaker.
If a ground leakage breaker is not installed, it may cause electric shock or fire.
• Perform drain work in accordance with this Sheet, and ensure that the drain water is properly drained.
If the drain processing is improperly installed, water may drip down from the unit, wetting the furniture.
• Do not touch the fins with bare hands.
CAUTION!
This mark indicates procedures which, if improperly performed, might possibly result in personal
harm to the user, or damage to property.
2. PRECAUTIONS FOR USING THE ALTERNATIVE REFRIGERANT
Pay careful attention to the following points :
• Since the working pressure is 1.6 times higher than that of R22 models, some of the piping and installation and service tools are
special. (See the table in the SPECIAL TOOLS FOR R410A section.)
Especially, when replacing a conventional refrigerant (other than R410A) model with a new refrigerant R410A model, always
replace the conventional piping and flare nuts with the R410A piping and flare nuts.
• Models that use refrigerant R410A have a different charging port thread diameter to prevent erroneous charging with R22, R407C
and for safety. Therefore, check beforehand. [The charging port thread diameter for R410A is 1/2 UNF 20 threads per inch.]
• Be more careful than the installation of the refrigerant (other than R410A) models, not to enter foreign matters (oil, water, etc.) and
other refrigerant into the piping. Also, when storing the piping, securely seal the openings by pinching, taping, etc.
• When charging the refrigerant, take into account the slight change in the composition of the gas and liquid phases, and always
charge from the liquid phase side whose composition is stable.
Contents of change
Pressure is huge and cannot be measured with a conventional gauge. To prevent erroneous mixing of other
refrigerants, the diameter of each port has been changed.
It is recommended to use a gauge manifold with a high pressure display range –0.1 to 5.3 MPa and a low
pressure display range –0.1 to 3.8 MPa.
To increase pressure resistance, the hose material and base size were changed.
A conventional vacuum pump can be used by installing a vacuum pump adapter.
Special gas leakage detector for HFC refrigerant R410A.
Tool name
Gauge manifold
Charging hose
Vacuum pump
Gas leakage detector
SPECIAL TOOL FOR R410A
PRECAUTIONS FOR USING THE R410A REFRIGERANT
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3. ACCESSORIES
The following installation parts are supplied. Use them as required.
Do not discard any accessories until the installation work has been completed.
Description
Drain pipe
Gasket
Joint pipe
Flange joint
assembly
Q’ty
3
1
1
1
Application
For outdoor unit drain
piping work (Heat pump
model only)
Installation between
flange joint assembly and
3-way valve
For connecting the pipe
For connecting the pipe
Description
Terminal resistor
Coupler heat insulation
Binder C
Q’ty
1
1
1
Application
Install it on the board of
the outdoor unit (master
unit only).
For outdoor side pipe
joint
For transmission cable
binding
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4. INSTALLATION WORK
Make sure to obtain the customer’s approval for selecting and installing the unit.
4.1. SELECTING AN INSTALLATION LOCATION
WARNING
• Install the unit in a location that can withstand its weight, and where it will not topple or fall.
• Calculate the proper refrigerant concentration if you will be installing it in an enclosed location.
Total amount of replenished refrigerant in refrigerant facility (kg)
Capacity of smallest room where unit is installed (m
3
)
Refrigerant concentration (kg/m3)
(0.3 kg/m
3
)
If the results of the calculation exceed the concentration limit, increase the room surface area or install a ventilation duct.
CAUTION
Select an installation location by observing the following precautions:
• Do not tilt the outdoor unit more than 3 degrees.
• Install the unit in a well-ventilated area away from rain or direct sunlight.
• If the unit must be installed in an area within easy reach of the general public, install as necessary a protec-
tive fence or the like to prevent their access.
• Install the unit in an area that would not inconvenience your neighbors, as they could be affected by the
airflow coming out from the outlet, noise, or vibration.
If it must be installed in proximity to your neighbors, be sure to obtain their approval.
• If the unit is installed in a cold region that is affected by snow accumulation, snow fall, or freezing, take
appropriate measures to protect it from those elements.
To ensure a stable operation, install inlet and outlet ducts.
• Install the unit in an area that would not cause problems even if the drain water is discharged from the unit.
Otherwise, provide drainage that would not affect people or objects.
• Install the unit in an area that has no heat sources, vapors, or the risk of the leakage of flammable gas in the
vicinity.
• Install the unit in an area that is away from the exhaust or vent ports that discharge vapor, soot, dust, or
debris.
• Install the indoor unit, outdoor unit, power supply cable, transmission cable and remote control cable at least
1 meter away from a television or radio.
The purpose of this is to prevent TV reception interference or radio noise. (Even if they are installed more
than 1 meter apart, you could still receive noise under some signal conditions.)
• Keep the length of the piping of the indoor and outdoor units within the allowable range.
• For maintenance purposes, do not bury the piping.
>
=
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4.2. TRANSPORTING THE PRODUCT
Fig. 4.2-1
Fig. 4.2-2
<Front>
Protective boards
Rope suspension area
Fork (Manual forklift)
Delivery pallet
Fork (Forklift)
Transporting with ropes (Fig. 4.2-1)
• To transport the outdoor unit to the installation location by suspending it, use the four cutouts that are located in the front and
back to pass a rope under the base.
• As you transport the unit, make sure the unit is vertical.
The unit could fall if you tilt the unit during transport.
• For transport, use a rope that can fully withstand the weight of
the unit.
• Do not apply shocks to the unit during transport.
• Use a protective plate to prevent the bell mouth from coming in
contact with the rope. Failure to use a protective plate can cause
the bell mouth to become deformed or damaged.
• Use 2 rope which are 8 m in length or longer.
Transporting on a forklift (Fig. 4.2-2)
• To transport the unit on a forklift, slide the forks of the forklift
through the opening between the unit and the delivery pallet.
This will enable the unit and the delivery pallet to be removed.
• Protect the unit from scratches during installation.
Transporting on a manual forklift (Fig. 4.2-2)
• To transport the unit on a manual forklift, slide the forks of the
manual forklift through the opening of the side of the delivery
pallet. This will enable the removal of the unit and the delivery
pallet.
• Protect the unit from scratches during installation.
<Side>
Product mass
About 380 kg
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4.3. INSTALLATION DIMENSIONS
CAUTION
Be careful of the following issues for selecting position of outdoor unit.
• Install with sufficient space when taking into consideration such as conveyance routes, installation space,
walk space and maintenance.
• Observe the installation space specifications that are shown in the figures.
If installation is not performed according to the specifications, it could cause a short circuit and result in a
lack of performance.
As a result, outdoor unit might be stopped by high-pressure protection easily.
• During installation, take into account the installation space required for the refrigerant piping space.
Single unit installation
1 The installation space must be satisfied for each wall (front, rear, sides) are shown below (Fig. 4.3-1):
• There must be no obstructions on the blowing side of the fan.
If there are obstructions on the blowing side of the fan, a discharge duct must be used.
• The wall height on the front must be H1 (600 mm) or less.
• The wall height on the rear must be H2 (300 mm) or less.
• If the wall height on the front exceeds H1 = 600 mm, the distance h1 (the distance by which it exceeds H1) must be added to the
L1 (500 mm) service space.
• If the wall height on the front exceeds H2 = 300 mm, the distance h2 (the distance by which it exceeds H2) must be added to the
L2 (300 mm) service space.
• There is no limit to the wall height on the side.
• The sides of the unit and the walls must be separated by a distance of 10 mm or more.
If the distance from the sides of the unit to the walls is 150 mm or less, the 6 screws on the right side of the unit must be removed
before installation.
• If H1
<
=
600 mm, then L1
>
=
500 mm
• If H2
<
=
300 mm, then L2
>
=
300 mm
• If H1 > 600 mm, then L1
>
=
500 mm + h1
• If H2 > 300 mm, then L2
>
=
300 mm + h2
Fig. 4.3-1
2 If unit needs to install at a high front and rear wall height because of a small installation space (Fig. 4.3-2):
• There must be no obstructions on the blowing side of the fan.
If there are obstructions on the blowing side of the fan, a discharge duct must be used.
• If space cannot be secured on the front and rear (L1 < 500 mm + h1, L2 < 300 mm + h2), do not install walls on the sides.
If there is a high wall front or rear side, at least 2 sides must be opened.
• The wall height on the front and rear must be 1,500 mm or less.
• A service space must be secured of L1
>
=
500 mm and L2
>
=
300 mm.
Fig. 4.3-2
10 mm or more
<Top view>
10 mm or more
<Side view>
Wall
<Side (left)>
<Side (right)>
<Front>
<Rear>
<Side view (right)>
Remove 6 screws
Remove screw
<Rear>
<Front>
Wall Wall
h1H1
h2H2
L1 L2
<Top view>
L2L1
Wall
<Front>
<Side view>
<Rear>
<Front>
L1 L2
Wall
1,500 mm max.
1,500 mm max.
Wall
<Rear>
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Multiple Connections
1 Installation space must be satisfied for each wall (front, rear, sides) are shown below (Fig. 4.3-3):
• There must be no obstructions on the blowing side of the fan.
If there are obstructions on the blowing side of the fan, a discharge duct must be used.
• The wall height on the front must be H1 (600 mm) or less.
• The wall height on the rear must be H2 (300 mm) or less.
• If the wall height on the front exceeds H1 = 600 mm, the distance h1 (the distance by which it exceeds H1) must be added to the
L1 (500 mm) service space.
• If the wall height on the front exceeds H2 = 300 mm, the distance h2 (the distance by which it exceeds H2) must be added to the
L2 (300 mm) service space.
• There is no limit to the wall height on the side.
• The side of the unit and the walls must be separated by a distance of 10 mm or more.
If the distance from the sides of the unit to the walls is 150 mm or less, the 6 screws on the right side of the unit must be removed
before installation.
• If H1
<
=
600 mm, then L1
>
=
500 mm
• If H2
<
=
300 mm, then L2
>
=
300 mm
• If H1 > 600 mm, then L1
>
=
500 mm + h1
• If H2 > 300 mm, then L2
>
=
300 mm + h2
Fig. 4.3-3
2 If unit needs to install at a high front and rear wall height because of a small installation space (Fig. 4.3-4):
• There must be no obstructions on the blowing side of the fan.
If there are obstructions on the blowing side of the fan, a discharge duct must be used.
• If space cannot be secured on the front and rear (L1 < 500 mm + h1, L2 < 300 mm + h2), do not install walls on the sides.
If there is a high wall front or rear side, at least 2 sides must be opened.
• The wall height on the front and rear must be 1,500 mm or less.
• A service space must be secured of L1
>
=
500 mm and L2
>
=
300 mm.
Fig. 4.3-4
10 mm or more
300 mm or more
500 mm or more 10 mm or more 10 mm or more
<Front>
Wall
<Rear>
10 mm or more
<Side view>
<Rear>
<Front>
Wall
Wall
h1H1
h2
H2
L1 L2
300 mm or more
500 mm or more 10 mm or more 10 mm or more
<Front>
Wall
<Rear>
<Side view>
<Rear>
<Front>
L1 L2
Wall
1,500 mm max.
1,500 mm max.
Wall
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4.4 INSTALLATION THE UNIT
• Install 4 or more anchor bolts at the 8 locations indicated by arrows. (Fig. 4.4-1)
• Keep the left and right anchor bolts 850 mm or more apart from each other.
This does not apply when anchor bolts are installed in all 8 locations.
• To reduce vibration, do not install the unit directly on the ground.
Instead, install it on a secure base (such as concrete blocks). (Fig. 4.4-2) Depending on the installation conditions, the unit may
spread its vibration during operation, which may cause noise and vibration.
Therefore, attach damping materials (such as damping pads) to the unit during installation.
• If you will be installing a foundation, be sure to take the routing of the pipe connections into account.
• Before securing the unit, make sure the anchor bolts are tightened securely.
Fig. 4.4-1
3 The number of outdoor units that may be connected is 1 system (3 units connected) (Fig. 4.3-5).
• To install more than 1 outdoor unit system, provide a distance between each refrigerant system.
• Do not install walls at the sides.
Fig. 4.3-5
500 mm
or more
300 mm
or more
1,300 mm
646 mm
678 mm
703 mm
1,000 mm
850 mm
Bolt (M10) × 4
NO GOOD OK OK
* Do not use a four-corner support foundation.
ø12 (hole) × 8 places
Front
1,000 mm
or more
<Front>
Wall
500 mm
or more
800 mm
or more
300 mm
or more
300 mm
or more
1,000 mm
or more
300 mm
or more
Wall
Wall
10 mm or more
10 mm or more
10 mm or more
10 mm
or more
10 mm or more
10 mm or more
10 mm or more
10 mm
or more
<Front>
<Rear>
<Front>
<Rear>
<Front>
<Front>
Fig. 4.4-2 Installation example
<Rear>
<Rear>
<Rear>
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A) In case of one outdoor unit connected
• From outdoor unit to the farthest indoor unit:
e+f+g+i+k+m
<
=
150 m (actual pipe length),
e+o+p+r+t
<
=
150 m (actual pipe length)
• From the first separation tube to the farthest indoor unit:
o+p+r+t
<
=
60 m (actual pipe length)
• Difference in height between outdoor units and indoor units (H1)
50 m: For the indoor unit stated below
40 m: For the outdoor unit stated below
• Difference in height between indoor units and indoor units
H2
<
=
15 m, H3
<
=
15 m
• e+f+g+h+i+j+k+l+m+n+o+p+q+r+s+t+u
<
=
300 m (total pipe length)
NOTE : If the outdoor temperature during cooling operation
is expected to be –5 °C or less, do not install the outdoor unit lower than the indoor unit.
B) In case of two outdoor unit connected
• From outdoor unit to the farthest indoor unit:
a+e+f+g+i+k+m
<
=
150 m (actual pipe length)
a+e+o+p+r+t
<
=
150 m (actual pipe length)
• Difference in height between outdoor units and indoor units (H1)
50 m: For the indoor unit stated below
40 m: For the outdoor unit stated below
• From the first separation tube to the farthest indoor unit:
o+p+r+t
<
=
60 m (actual pipe length)
• Difference in height between indoor units and indoor units (H2, H3)
H2
<
=
15 m, H3
<
=
15 m
• Difference in height between outdoor unit and outdoor units: (H4)
H4
<
=
0.5 m
• From outdoor unit to outdoor unit branch kit
a, d
<
=
3 m
• a+d+e+f+g+h+i+j+k+l+m+n+o+p+q+r+s+t+u
<
=
300 m (total pipe
length)
• Outdoor capacity
Master
>
=
Slave
C) In case of three outdoor unit connected
• From outdoor unit to the farthest indoor unit:
a+e+f+g+i+k+m
<
=
150 m (actual pipe length)
a+e+o+p+r+t
<
=
150 m (actual pipe length)
• From the first separation tube to the farthest indoor unit:
o+p+r+t
<
=
60 m (actual pipe length)
• Difference in height between outdoor units and indoor units (H1)
50 m: For the indoor unit stated below
40 m: For the outdoor unit stated below
• Difference in height between indoor units and indoor units (H2, H3)
H2
<
=
15 m, H3
<
=
15 m
• Difference in height between outdoor unit and outdoor units: (H4)
H4
<
=
0.5 m
• From outdoor unit to outdoor unit branch kit
a, b, c
<
=
3 m
• Piping length between the farthest outdoor unit to the first outdoor unit branch kit
a, b, c
<
=
3 m, c+d, b+d
<
=
12 m
• a+b+c+d+e+f+g+h+i+j+k+l+m+n+o+p+q+r+s+t+u
<
=
300 m (to-
tal pipe length)
• Outdoor unit capacity
Master
>
=
Slave 1
>
=
Slave 2
4.5. SYSTEM LAYOUT
CAUTION
If there are multiple outdoor units to be connected, make sure to install the master unit near the indoor unit.
If 3 outdoor units are to be connected, install them in descending order, starting with the one with the largest
capacity closest to the indoor unit.
Fig. 4.5-1
Fig. 4.5-2
Fig. 4.5-3
fgeik m
o
p
qs
hjln
Outdoor
unit
(Master)
rt
H3
H2
H1
u
H3
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
Outdoor
unit 1
(Master)
Outdoor
unit 2
(Slave)
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
H4
a
fg
ed
ik m
o
p
q
s
hjln
rt
H3
H2
H1
u
H3
Outdoor
unit 1
(Master)
Outdoor
unit 2
(Slave 1)
Outdoor
unit 3
(Slave 2)
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
c
H4
b
fg
ed
ik m
o
p
q
s
hjln
rt
H3
H2
H1
u
H3
a
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4.6. PIPE SELECTION
CAUTION
• This unit is designed specifically for use with the R410A
refrigerant.
• Pipes for R407C or R22 may not be used with this unit.
• Do not use existing pipes.
• Improper pipe selection will degrade performance.
• Refer to Fig. 4.6-1 for the proper pipe selection.
Outside Diameter mm 6.35 9.52 12.70 15.88 19.05 22.22 28.58 34.92 41.27
Wall Thickness
3)
mm 0.8 0.8 0.8 1.0 1.2 1.0 1.0 1.2 1.43
Material
COPPER
1)
COPPER
2)
JIS H3300 C1220T-O or equivalent JIS H 3300 C1220T-H or equivalent
Table 4.6-1 Wall thickness and pipe material for each diameter
1) Allowable tensile stress
>
=
33 (N/mm2)
2) Allowable tensile stress
>
=
61 (N/mm2)
3) Design pressure 4.2 MPa
Liquid pipe Gas pipe
8
AJ
A72LBTF
12.70 22.22
AJ
A72UBTF UTR-CP567L
10
AJ
A90LBTF
12.70 22.22
UTR-CP567X
AJ
A90UBTF
14
AJ
126LBTF
12.70 28.5
8
UTR-CP567Q
AJ
126UBTF
Table 4.6-2 Between outdoor unit to outdoor unit branch kit
Outside diameter (mm)
Table 4.6-3 Between outdoor unit branch kits or outdoor unit branch kit to first separation tube
Total model code
of outdoor unit
Outside diameter (mm)
HP Liquid pipe Gas pipe
8, 10 12.70 22.22
14, 16 12.70 28.58
18, 20 15.88 28.58
22, 24, 26, 28 15.88 34.92
30, 32, 34 19.05 34.92
36, 38, 42 19.05 41.27
Table 4.6-4 Between separation tubes
Total model code Outside diameter (mm)
of indoor unit Liquid pipe Gas pipe
Separation tube
5)
Header
5)
14 to 35 9.52 15.88 UTR-BP090L
UTR-H0908L
36 to 53 9.52 19.05 UTR-BP090X
UTR-H0906L
54 to 90 12.70 22.22 UTR-BP090Q
91 to 161 12.70 28.58
UTR-BP180L
UTR-H1808L
UTR-BP180X
UTR-H1806L
162 to 180 15.88 28.58
UTR-BP180Q
181 to 269 15.88 34.92 UTR-BP567L
—270 to 323 19.05 34.92 UTR-BP567X
324 to 567 19.05 41.27 UTR-BP567Q
Table 4.6-5 Between separation tube to indoor unit
Model code Outside diameter (mm)
of indoor unit Liquid pipe Gas pipe
7, 9, 12, 14 6.35 12.70
18, 20, 24, 25, 30 9.52 15.88
36, 45, 54, 60 9.52 19.05
90 12.70 22.22
Pipe size
(Table 4.6-6)
MASTER
Unit
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
SLAVE 1
Unit
SLAVE 2
Unit
Pipe size
(Table 4.6-2)
Pipe size
(Table 4.6-3)
Pipe size
(Table 4.6-4)
Pipe size
(Table 4.6-5)
HP
Outdoor unit model
Fig. 4.6-1
Table 4.6-6 Between outdoor units
Outside diameter (mm)
Oil equalization pipe 6.35
First separation
tube (optional)
Outdoor unit branch
kit (optional)
Separation tube
(optional)
Outdoor unit
4)
branch kit
• If the pipe diameter between separation tubes (based on table 4.6-4) becomes larger than the pipe diameter between outdoor unit
branch kit and the first separation tube (based on table 4.6-3), please select a pipe whose diameter is equal to the one between
outdoor unit branch kit and the first separation tube.
4)Refer to “4.7.6 MULTIPLE CONNECTIONS” or the Installation Instruction
Sheet of the outdoor
unit branch kit for the
connection methods.
5)Refer to “4.7.3 INDOOR UNIT PIPE
CONNECTIONS” or
the Installation Instruction Sheets of
the separation tube
and the header for the
connection methods.
9374241033_IM_en_p01-17.p65 26/8/2008, 18:2311
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