Fujitsu AJY072LELAH, AJY108LELAH, AJH072LELAH, AJH090LELAH, AJY090LELAH Installation Manual
...
English
INSTALLATION MANUAL
OUTDOOR UNIT
For authorized service personnel only.
PART No. 9380545200-03
AJY072LELAH
AJY090LELAH
AJY108LELAH
AJH072LELAH
AJH090LELAH
AJH108LELAH
[Original instructions]
En-1
1. SAFETY PRECAUTIONS
• Be sure to read this Installation manual thoroughly before installation.
• The warnings and precautions indicated in this Installation manual 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.
• Please pass this Installation manual together with the Operating manual to the customer.
Please ask the customer to keep the Operating manual and Installation manual at hand
for future reference during the moving or repair of the main unit.
WARNING
This mark indicates procedures which, if improperly performed, might lead to the death or serious injury of the user.
Consult the retail store or professional technicians to install the main unit according to
the Installation manual.
Improper installation will cause serious accidents such as refrigerant leakage, water
leakage, electric shock, and fire.
Manufacturer's guarantee will be invalid when instructions in the Installation manual are
ignored during installation.
For installation purposes, be sure to use the parts supplied by the manufacturer or other
prescribed parts.
Using non-specified parts will cause serious accidents such as falling unit, refrigerant
leakage, water leakage, electric shock, and 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.
It will also cause serious accidents such as refrigerant leakage, water leakage, electric
shock, and fire.
Do not use this equipment with air or any other unspecified refrigerant in the refrigerant
lines.
Excess pressure can cause a 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.
Ensure that the outdoor unit is securely installed at a place that can withstand the
weight of the unit.
Improper installation will cause injuries caused by falling unit.
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 Installation manual 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 cables, connect them securely, making sure that
there are no external forces of the cables applied to the terminal connections.
Improperly connected or secured cables 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.
Use a wall hole pipe. Otherwise, it may cause a short circuit.
Do not place the outdoor unit near the handrail of the balcony.
Children may climb onto the outdoor unit, lean over the handrail and fall over.
Use only a specified power cable. Poor connection, poor insulation, and exceeding the
allowable current will lead to electric shock and fire.
Attach the connecting cables securely to the terminal. Or secure it firmly with a “wiring
suppressor”.
Loose connection will lead to malfunction, electric shock, and fire.
Be sure to install an earth leakage breaker that can shut down all power supplies within
the system at the same time.
If you do not install a breaker, it may cause electric shock and fire.
During installation, make sure that the refrigerant pipe is attached firmly before you run
the compressor.
Do not operate the compressor under the condition of refrigerant piping not attached
properly with 2-way or 3-way valve open. This may cause abnormal pressure in the
refrigeration cycle that leads to rupture and even injury.
During the pump-down operation, make sure that the compressor is turned off before you remove the refrigerant piping. Do not remove the connection pipe while the
compressor is in operation with 2-way or 3-way valve open. This may cause abnormal
pressure in the refrigeration cycle that leads to breakage and even injury.
INSTALLATION MANUAL
VRF system outdoor unit
PART No. 9380545200-03
Contents
1. SAFETY PRECAUTIONS ………………………………………………………………… 1
2. ABOUT THIS PRODUCT …………………………………………………………………2
2.1. Precautions for using R410A refrigerant …………………………………………2
2.2. Special tools for R410A ……………………………………………………………2
2.3. Accessories ………………………………………………………………………… 2
2.4. Combinations ………………………………………………………………………3
2.5. Optional parts ……………………………………………………………………… 3
3. INSTALLATION WORK ……………………………………………………………………3
3.1. Selecting an installation location ………………………………………………… 3
3.2. Drain processing ……………………………………………………………………3
3.3. Installation dimensions ……………………………………………………………3
3.4. Transporting the unit ……………………………………………………………… 4
3.5. Installing the unit …………………………………………………………………… 5
4. SYSTEM CONFIGURATION ………………………………………………………………5
4.1. System confi guration ………………………………………………………………5
4.2. Pipe selection ……………………………………………………………………… 5
4.3. Protection of pipes …………………………………………………………………6
5. PIPE INSTALLATION ………………………………………………………………………6
5.1. Brazing ……………………………………………………………………………… 6
5.2. Indoor unit pipe connections ……………………………………………………… 6
5.3. Opening the knockout hole ………………………………………………………7
5.4. Pipe connection ……………………………………………………………………7
6. ELECTRICAL WIRING …………………………………………………………………… 8
6.1. The precautions of electrical wiring ………………………………………………8
6.2. Knockout hole ………………………………………………………………………8
6.3. Selecting power supply cable and breaker ………………………………………8
6.4. Transmission line ……………………………………………………………………9
6.5. Wiring method ………………………………………………………………………9
6.6. External input and external output …………………………………………… 10
7. FIELD SETTING ………………………………………………………………………… 11
7.1. Field setting switches …………………………………………………………… 11
7.2. DIP switch setting ……………………………………………………………… 11
7.3. Rotary switch setting …………………………………………………………… 12
7.4. Push button setting ……………………………………………………………… 12
7.5. Address setting for signal amplifi ers …………………………………………… 14
7.6. Indoor unit address setting ……………………………………………………… 14
7.7. Resistance measurement of transmission cable
(Measure with breaker OFF) …………………………………………………… 14
8. PIPE INSTALLATION II ………………………………………………………………… 15
8.1. Sealing test ……………………………………………………………………… 15
8.2. Vacuum process ………………………………………………………………… 15
8.3. Additional charging ……………………………………………………………… 15
8.4. Installing insulation ……………………………………………………………… 16
8.5. Filling with putty ………………………………………………………………… 16
9. TEST RUN ……………………………………………………………………………… 16
9.1. Indoor unit connection check …………………………………………………… 16
9.2. Pre-check for test run …………………………………………………………… 17
9.3. Test run method ………………………………………………………………… 17
9.4. Checklist ………………………………………………………………………… 17
10. LED STATUS …………………………………………………………………………… 18
10.1. Normal operation codes ………………………………………………………… 18
10.2. Error codes ……………………………………………………………………… 18
11. INFORMATION ………………………………………………………………………… 18
En-2
CAUTION
This mark indicates procedures which, if improperly performed, might possibly result in personal harm to the user, or
damage to property.
This unit must be installed by qualified personnel with a capacity certificate for handling
refrigerant fluids. Refer to regulation and laws in use on installation place.
The installation must be carried out in compliance with regulations in force in the place
of installation and the installation instructions of the manufacturer.
This unit is part of a set constituting an air conditioner. It must not be installed alone or
with non-authorized by the manufacturer.
This unit contains no user-serviceable parts. Always consult authorized service personnel to repairs.
When moving, consult authorized service personnel for disconnection and installation
of the unit.
Be sure to use a dedicated power circuit.
Never use a power supply shared by another appliance.
072/090 model
• This product is conformed to IEC/EN61000-3-2.
• This product is designed for professional use.
• On the power supply connection, obtain the connection permission of the distribution
network operator.
108 model
• This equipment complies with IEC 61000-3-12 provided that the short-circuit power
Ssc is greater than or equal to 5.456 MVA at the interface point between the user's
supply and the public system. It is the responsibility of the installer or user of the
equipment to ensure, by consultation with the distribution network operator if necessary, that the equipment is connected only to a supply with a short-circuit power Ssc
than or equal to 5.456 MVA.
Do not install the unit in the following areas:
• For the installation conditions if installing in an area of high salt damage such as the
coast, follow the Design & Technical Manual.
• 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.
• Avoid installing the unit at places where it will come into contact with animals’ urine or
ammonia.
The units are not explosion proof and therefore should not be installed in explosive
atmosphere.
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 cable to a gas pipe, water pipe, lightning
rod, or a telephone ground cable. Improper grounding may cause electric shock.
Perform draining for the unit according to the Installation manual. Check that the 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.
Be sure not to start or stop the operation of air conditioning with power breaker. Otherwise, it may cause malfunction or water leakage.
When setting it up near the equipment that generates electromagnetic waves and the
equipment that generates the higher harmonics wave, be sure to take measures against
noise. Otherwise, it may cause malfunction or failure.
When energizing to the crankcase heater, please turn on the power 12 hours or earlier
before operation begins. When the energizing time is short, it may cause failure. Besides, please do not turn off power during the busy season.
This appliance is not intended for use by persons (including children) with reduced
physical, sensory or mental capabilities, or lack of experience and knowledge, unless
they have been given supervision or instruction concerning use of the appliance by a
person responsible for their safety. Children should be supervised to ensure that they
do not play with the appliance.
2. ABOUT THIS PRODUCT
2.1. Precautions for using R410A 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.
2.2. Special tools for R410A
Tool name Contents of change for R22 tool
Gauge manifold
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.
Charging hose
To increase pressure resistance, the hose material and base
size were changed.
Vacuum pump
A conventional vacuum pump can be used by installing a
vacuum pump adapter.
• A conventional vacuum pump can be used by installing a
vacuum pump adapter.
• Be sure that the pump oil does not back flow into the
system. Use one capable for vacuum suction of -100.7kPa
(5 Ton, -755mmHg).
Gas leakage detector Special gas leakage detector for HFC refrigerant R410A.
2.3. Accessories
Use connecting parts as required.
Do not throw away the connecting parts until the installation has been complete.
Name and shape Q’ty Application
Specifications
manual
1
—
Installation
manual
1
(This manual)
Drain cap
9
For outdoor unit drain piping work
Drain pipe
1
For outdoor unit drain piping work
Joint pipe A
1
(090/108
model only)
For connecting gas pipe
(L type)
Joint pipe B
1
(090/108
model only)
For connecting gas pipe
(Straight type)
Joint pipe C
1
(090 model
only)
For connecting liquid pipe
(Pipe reducer)
Push mount cable tie
2
For binding transmission cable
Grommet edging
2
For power supply cable and connection cable installation.
Attach to the knockout hole.
En-3
2.4. Combinations
The number of indoor units that can be connected are as follows:
Model
Outdoor unit cooling capacity
[kW]
Maximum connectable indoor
units
AJ*072LELAH 22.4 20
AJ*090LELAH 28.0 25
AJ*108LELAH 33.5 30
2.5. Optional parts
CAUTION
The following parts are optional parts specific to R410A refrigerant.
Do not use parts other than those listed below.
2.5.1 Separation tube kit and Header
Separation tube and header uses the following parts. A header is used for connecting the
indoor units.
Total cooling capacity of
indoor unit (kw)
Separation tube
Header
3-6 Branches 3-8 Branches
19.6 or less UTP-AX054A
UTR-H0906L UTR-H0908L
28.0 or less UTP-AX090A
28.1 or more UTP-AX180A UTR-H1806L UTR-H1808L
2.5.2 External connect kit
Model Usage
UTY-XWZXZ6
For External input (CN131, CN132, CN133, CN134)
For External output (Error status / CN136) (Operation status / CN137)
UTY-XWZXZF
For External input (CN135)
UTY-XWZXZ9
For External output (Base heater / CN115)
3. INSTALLATION WORK
Please obtain the approval of the customer when selecting the location of installation and
installing the main unit.
3.1. 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)
≤
Refrigerant concentration (kg/m³)
(0.42 kg/m³)
Capacity of smallest room where unit
is installed (m³)
If the results of the calculation exceed the concentration limit, increase the room surface
area or install a ventilation duct.
CAUTION
Do not tilt the outdoor unit more than 0.3 degrees. However, do not install the unit with it
tilted towards the side containing the compressor.
Install this unit in a location with good ventilation.
If the unit must be installed in an area within easy reach of the general public, install as
necessary a protective 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.
3.2. Drain processing
CAUTION
Perform drain work in accordance with this Manual, and ensure that the drain water is
properly drained. If the drain work is not carried out correctly, water may drip down from
the unit, wetting the furniture.
When the outdoor temperature is 0 °C or less, do not use the accessory drain pipe
and drain cap. If the drain pipe and drain cap are used, the drain water in the pipe may
freeze in extremely cold weather.
• If you are installing the drain pipe and drain caps,
please provide a working space under the base of
the outdoor unit.
• As the drain water flows out of the outdoor unit
during heating operation, install the drain pipe and
connect it to a commercial 16 mm hose.
• When installing the drain pipe, plug all the holes
other than the drain pipe mounting hole in the
bottom of the outdoor unit with putty so there is no
water leakage.
Base of the outdoor unit
Drain pipe
Drain pipe mounting hole
446
600
Air
Unit: mm
Drain cap mounting
hole × 9
Drain pipe
mounting hole
3.3. Installation dimensions
CAUTION
Provide sufficient installation space, such as transportation route, maintenance space,
ventilation space, refrigerant piping space, and passageways.
Pay attention to the specifications of the installation space as shown in the figure. If
the unit is not installed according to specifications, it may cause short circuit or poor
performance. The unit may be prone to lapse into non-operation due to high pressure
protection.
When there is a wall in front of the unit, provide a space of 500 mm or more as maintenance space.
When there is a wall at the right side of the unit, provide a space of 100 mm or more.
An outdoor temperature of 35°C (DB) in air-conditioned operation is assumed for the
installation space in this item. If the outdoor temperature exceeds 35°C (DB) and the
outdoor unit is operating at a load exceeding its rated ability, provide a larger inlet
space.
If you are installing more outdoor units than indicated here, please ensure sufficient
space or consult your distributing agent as it may affect the performance due to short
circuit and other problems.
Consider the transportation route, installation space, maintenance space, and access,
and install the unit in a location with sufficient space for the refrigerant piping.
Keep the space shown in the installation examples.
If the installation is not performed accordingly, it
could cause a short circuit and result in a lack of
operating performance.
Air intake
Rear
Front
Do not obstruct the air intake of the outdoor unit with
piping, wiring, stand, etc.
Refer to the Design and Technical Manual for installations not described in the following
examples.
Other installation is not recommended. Performance may drop significantly.
En-4
3.3.1 Single outdoor unit installation
When the upward area is open
Unit: mm
(1) Obstacles at rear only
100 or more
(2) Obstacles at rear and sides only
100 or more
300 or
more
80 or
more
(3) Obstacles at front only
1000 or more
(4) Obstacles at front and rear only
1000 or more
100 or more
When an obstruction is present also in the upward area
Unit: mm
(1) Obstacles at rear and above only
100 or
more
Max.
500
1000 or
more
(2) Obstacles at rear, sides, and above only
1500 or
more
80 or
more
100 or more
300 or
more
3.3.2 Multiple outdoor unit installation
• Provide at least 100 mm of space between the outdoor units if multiple units are
installed.
• When routing the piping from the side of an outdoor unit, provide space for the piping.
• No more than 3 units must be installed side by side.
When 3 units or more are arranged in a line, provide the space as shown in the following
example when an obstruction is present also in the upward area.
When the upward area is open
Unit: mm
(1) Obstacles at rear only
300 or
more
(2) Obstacles at front only
1500 or more
(3) Obstacles at front and rear only
500 or more
1500 or more
When an obstruction is present also in the upward area
Unit: mm
• Obstacles at rear and above only
1500 or
more
500 or
more
Max.
300
1500 or
more
3.3.3 Outdoor units installation in multi row
* The following settings are not recommended in case of cooling by a low outside tem-
perature. Unit: mm
(1) Single parallel unit arrangement (2) Multiple parallel unit arrangement
100 or
more
600 or more
1000 or more
2000 or
more
500 or
more
600 or more
1500 or more
3000 or
more
3.4. Transporting the unit
WARNING
Do not touch the fins. Otherwise, personal injury could result.
CAUTION
When carrying the unit, hold the handles on the right and left sides and be careful.
If the outdoor unit is carried from the bottom, hands or fingers may be pinched.
Hoisting method
• When hoisting the outdoor unit, hook the rope on the outside of the foot as shown in the
figure.
• Use sufficiently strong rope to bear the unit’s weight.
• Place protective board or filler cloth at the place where the cabinet may come into
contact with the rope to prevent damages. Without using them, the cabinet may be damaged or deformed.
• The center of gravity of the outdoor unit is shifted to the right. Be careful not to tilt to the
heavy side causing it to fall.
• To prevent an accident caused by the unit swinging or falling down, do not apply any
impact to the unit when it is hanging.
• When hoisting, do not hook the rope to the thermistor holder on the back of the outdoor
unit.
Protective
boards
Foot
Light
side
Heavy
side
700 to
1000 mm
Product mass (kg)
AJ*072LELAH 170
AJ*090LELAH 177
AJ*108LELAH 178
Lifting by forklift
• When using the forklift to lift the unit, pass
the forklift arms through the opening space
of the wooden delivery pallet.
• Be careful not to damaged.
Wooden delivery
pallet
Carrying by hand
• Carry slowly in the manner
as shown on “Fig. B” holding the handles “Fig. A”
in right and left sides. (Be
careful not to touch with
hands or objects.)
• Be sure to hold the
handles on the sides of
the unit. Otherwise, the
suction grilles on the
sides of the unit may be
deformed.
Handle
Handle
Handle
Fig. A Fig. B
En-5
4. SYSTEM CONFIGURATION
For detailed information, refer to the Design and Technical Manual.
4.1. System confi guration
CAUTION
Always keep to the limit on the total amount of refrigerant. Exceeding the limit on the
total amount of refrigerant when charging will lead to malfunction.
• Between outdoor unit and the farthest indoor unit
a + f ≤ 120 m, a + p ≤ 120 m
• Between the first separation tube and the farthest indoor unit
f ≤ 90 m, p ≤ 90 m
• (The farthest indoor unit to the first separation tube) - (The nearest indoor unit to the first
separation tube)
f - (b + h) ≤ 60 m, p - (c + q) ≤ 60 m
• Between the nearest indoor unit and the outdoor unit
a + b + h ≥ 5 m, a+c+q ≥ 5 m
• Between outdoor unit and the first separation tube
a ≥ 3 m
• Difference in height between outdoor units and indoor units (H1)
50 m or less: Outdoor unit is higher than indoor unit
40 m or less: Outdoor unit is lower than indoor unit
• Difference in height between indoor units and indoor units (H2, H3)
(Indoor unit "A*****G*AH") 50 m or less: Outdoor unit is higher than indoor unit
(Indoor unit "A*****G*AH") 40 m or less: Outdoor unit is lower than indoor unit
(Other indoor units) 15 m or less
• Maximum total equivalent pipe length
a + f + h + j + l + n + p + q + s + u ≤ 400 m
• Total refrigerant amount ≤ 20 kg
Fig. A
f
p
q
j
h
b
c
su
H3
l
n
H1
H2
a
Outdoor unit
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
4.2. 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.
First separation
tube (optional)
Separation
tube (optional)
Pipe size
(table B)
Pipe size
(table C)
Pipe size
(table D)
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
Table. A (Wall thickness and pipe material for each diameter)
Outside
Diameter
mm
6.35 9.52 12.70 15.88 19.05 22.22 28.58
Wall Thick-
ness (*3)
mm
0.8 0.8) 0.8 1.0 1.2 1.0 1.0
Material
COPPER *1
JIS H3300 C1220T-O or equivalent
COPPER *2
JIS H3300 C1220T-H or
equivalent
Please select the pipe size in accordance with local rules.
*1: Allowable tensile stress ≥ 33 (N/mm
2
)
*2: Allowable tensile stress ≥ 61 (N/mm2)
*3: Endurance pressure of the pipes 4.2MPa
3.5. Installing the unit
• Please install the outdoor unit without slant. (within 0.3 degrees )
• Install 4 anchor bolts at the locations indicated with arrows in the figure.
• To reduce vibration, do not install the unit directly on the ground. Install it on a secure
base (such as concrete blocks).
• The foundation shall support the legs of the unit and have a width of 80 mm or more.
• Depending on the installation conditions, the outdoor unit may spread its vibration during
operation, which may cause noise and vibration. Therefore, attach damping materials
(such as damping pads) to the outdoor unit during installation.
• Install the foundation, making sure that there is enough space for installing the connection pipes.
• Secure the unit to a solid block using foundation bolts. (Use 4 sets of commercially available M10 to M12 bolts, nuts, and washers.)
• The bolts should protrude 20 mm. (Refer to the figure.)
• If overturning prevention is required, purchase the necessary commercially available
items.
AIR
688 195195
80 80
19
20
516
Unit: mm
Bolt
Nut
Base
• Do not install directly on the ground, this may result in equipment failure.
• The drain water is discharged from the bottom of the equipment. Construct a drain ditch
around the base and discharge the drain water properly.
• Provide ample space for ice buildup from condensate between the bottom of the unit and
the flat surface on which it is mounted. Otherwise, there is risk that the drainage water
will freeze between the device and the surface, disabling drainage.
Base
CAUTION
If the unit is installed in a region that is exposed to
high winds, freezing conditions, freezing rain, snow
fall or heavy snow accumulation, take appropriate
measures to protect it from those elements.
To ensure stable operation, the outdoor unit must be
installed on a raised stand or rack, at or above the
anticipated snow depth for the region.
The installation of snow hoods and drift prevention
fencing is recommended when blowing and drifting
snow is common to the region.
Loading...