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10 Installation Instruction
10.1. Outdoor unit installation
• Precautions shown here are differentiated between
and
. Those that have much chances for leading to
significant result such as fatality or serious injury if wrong installation would have been carried out are listed compiling them
especially into the column of
.
However, even in the case of items which are listed in the column of
, such items also have a chance for leading to
significant result depending on the situations.
In either case, important descriptions regarding the safety are listed, then observe them without fail.
In either case, important descriptions regarding the safety are listed, then observe them without fail.
• As to indications with illustration.
• After installation work has been completed, do not only make sure that the unit is free from any abnormal condition through the
execution of try run but also explain how to use and how to perform maintenance of this unit to the customer according to the
instruction manual.
In addition, request the customer to keep this manual for installation work together with instruction manual.
instruction manual.
In addition, request the customer to keep this manual for installation work together with instruction manual.
AIR CONDITIONERS OUTDOOR UNIT INSTALLATION INSTRUCTIONS
Precautions in terms of safety
Carry out installation work with reliability after thorough reading of this “Precaution in terms of safety”.
The appliance must be installed by technician, who takes into account the requirements given by ISO 5149 or eventual equivalent
requirements.
As to installation, request the distributor or vendor to perform it. Imperfection in installation caused by that having been carried
out by the customer himself may lead to water leakage, electric shock, fire, etc.
Carry out the installation work with reliability according to this manual for installation work.
Imperfection in installation leads to water leakage, electric shock, fire, etc.
Carry out the installation work with reliability on the place that can bear the weight of this unit sufficiently. Insufficient strength leads to
injury due to falling of the unit.
Carry out predetermined installation work in preparation for strong wind such as typhoon, earthquake. Imperfection in installation work
may lead to accidents arisen from overturn, etc.
The unit must be installed in accordance with applicable national and local regulations.
Any electrical work should only be carried out by qualified technician and use exclusive circuits without fail.
Presence of insufficient capacity in power circuit or imperfection in execution leads to electric shock, fire, etc.
Wiring shall be connected securely using specified cables and fix them securely so that external force of the cables may not transfer to the
terminal connection section.
Imperfect connection and fixing leads to fire, etc.
If installing inside a small room, measures should be taken to prevent refrigerant levels from building up to critical concentrations in the
event of a refrigerant leak occurring. Please discuss with the place of purchase for advice on what measures may be necessary to prevent
critical concentrations being exceeded. If the refrigerant leaks and reaches critical concentration levels, there is the danger that death from
suffocation may result.
Securely attach the protective covers for the outdoor unit connection cables and power cord so that they do not lift up after installation. If
the covers are not properly attached and installed, the terminal connections may overheat, and fire or electric shock may result.
Switch off all supplies before accessing any electrical part.
requirements.
As to installation, request the distributor or vendor to perform it. Imperfection in installation caused by that having been carried
out by the customer himself may lead to water leakage, electric shock, fire, etc.
Carry out the installation work with reliability according to this manual for installation work.
Imperfection in installation leads to water leakage, electric shock, fire, etc.
Carry out the installation work with reliability on the place that can bear the weight of this unit sufficiently. Insufficient strength leads to
injury due to falling of the unit.
Carry out predetermined installation work in preparation for strong wind such as typhoon, earthquake. Imperfection in installation work
may lead to accidents arisen from overturn, etc.
The unit must be installed in accordance with applicable national and local regulations.
Any electrical work should only be carried out by qualified technician and use exclusive circuits without fail.
Presence of insufficient capacity in power circuit or imperfection in execution leads to electric shock, fire, etc.
Wiring shall be connected securely using specified cables and fix them securely so that external force of the cables may not transfer to the
terminal connection section.
Imperfect connection and fixing leads to fire, etc.
If installing inside a small room, measures should be taken to prevent refrigerant levels from building up to critical concentrations in the
event of a refrigerant leak occurring. Please discuss with the place of purchase for advice on what measures may be necessary to prevent
critical concentrations being exceeded. If the refrigerant leaks and reaches critical concentration levels, there is the danger that death from
suffocation may result.
Securely attach the protective covers for the outdoor unit connection cables and power cord so that they do not lift up after installation. If
the covers are not properly attached and installed, the terminal connections may overheat, and fire or electric shock may result.
Switch off all supplies before accessing any electrical part.
If refrigerant gas escapes during installation, ventilate the affected area. If the refrigerant gas comes into contact with sparks or naked
flames, it will cause toxic gases to be generated.
Once installation work is completed, check that there are no refrigerant gas in the room that can come into contact with sparks or flames
from a fan heater, stove or kitchen range, which will cause toxic gases to be generated.
Once installation work is completed, check that there are no refrigerant gas in the room that can come into contact with sparks or flames
from a fan heater, stove or kitchen range, which will cause toxic gases to be generated.
When performing piping work do not mix air except for specified refrigerant (R410A) in refrigeration cycle. It causes capacity down, and
risk of explosion and injury due to high tension inside the refrigerant cycle.
flames, it will cause toxic gases to be generated.
Once installation work is completed, check that there are no refrigerant gas in the room that can come into contact with sparks or flames
from a fan heater, stove or kitchen range, which will cause toxic gases to be generated.
Once installation work is completed, check that there are no refrigerant gas in the room that can come into contact with sparks or flames
from a fan heater, stove or kitchen range, which will cause toxic gases to be generated.
When performing piping work do not mix air except for specified refrigerant (R410A) in refrigeration cycle. It causes capacity down, and
risk of explosion and injury due to high tension inside the refrigerant cycle.
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10.1.1.
Accessories Supplied With Outdoor Unit
• The following parts are supplied as accessories with each outdoor unit.
Check that all accessory parts are present before installing the outdoor unit.
10.1.2.
Before Installation Work
• This product is using new refrigeration (R410A). The basic way of installation work is the same as usual, but water and impurities
should be controlled more strictly than before due to characteristic of refrigerating machine oil. Therefore, selection of materials
to use and processing, storing and brazing need appropriate construction and control.
to use and processing, storing and brazing need appropriate construction and control.
1. Tools and materials.
There are tools and materials for both new refrigeration and usual refrigeration you can use together and for either two of
them you can use. Use the below for new refrigeration.
them you can use. Use the below for new refrigeration.
• Vacuum pump (with back flow preventor system)
• Gas leakage detection warning device
• Gauge manifold
• Charge hose
• Gas leakage detection warning device
• Gauge manifold
• Charge hose
Earth
This equipment must be properly earthed.
Earth line must not be connected to gas pipe, water pipe, lightning rod and telephone.
Otherwise, it may cause electrical shock in case the equipment breakdown or has leakage current.
This equipment must be properly earthed.
Earth line must not be connected to gas pipe, water pipe, lightning rod and telephone.
Otherwise, it may cause electrical shock in case the equipment breakdown or has leakage current.
Installation of Earth Leakage Current Breaker
This equipment must be installed with earth leakage current breaker.
Otherwise, it may cause electrical shock and fire in case the equipment breakdown or has leakage current.
When installing the product, take the necessary measures for typhoon, strong wind such as wind blowing between buildings and earth-
quake.
Do not insert your fingers or other objects into the unit.
This equipment must be installed with earth leakage current breaker.
Otherwise, it may cause electrical shock and fire in case the equipment breakdown or has leakage current.
When installing the product, take the necessary measures for typhoon, strong wind such as wind blowing between buildings and earth-
quake.
Do not insert your fingers or other objects into the unit.
Improper fixing of screw may cause leakage current and electrical shock.
Must not use other parts except original parts described in catalog and manual.
Do not install the unit at the place where the possibility of inflammable gas leakage exists. If such gas leakages should arise and the gas
builds up around the unit, such situation may lead to ignition.
Drain piping should be made to ensure secure drainage according to the manual for installation work and carry out the thermal insulation
to prevent the occurrence of condensation.
Imperfection in piping work leads to water leakage and may cause the house and property, etc. to become wet.
Position the indoor unit and outdoor unit, power cords and indoor/outdoor unit connection cables in a way so that they are at least 1 meter
away from televisions and radios.
This is to avoid problems such as interference with picture and/or sound.
(However, note that depending on the electromagnetic wave conditions, interference may still occur even if the separation distance is
more than 1 meter.)
When fixing the product with an overturn prevention wire, care should be taken to choose a place where no one trips over the fixing wire.
builds up around the unit, such situation may lead to ignition.
Drain piping should be made to ensure secure drainage according to the manual for installation work and carry out the thermal insulation
to prevent the occurrence of condensation.
Imperfection in piping work leads to water leakage and may cause the house and property, etc. to become wet.
Position the indoor unit and outdoor unit, power cords and indoor/outdoor unit connection cables in a way so that they are at least 1 meter
away from televisions and radios.
This is to avoid problems such as interference with picture and/or sound.
(However, note that depending on the electromagnetic wave conditions, interference may still occur even if the separation distance is
more than 1 meter.)
When fixing the product with an overturn prevention wire, care should be taken to choose a place where no one trips over the fixing wire.
Do not sit, step or place anything on the unit
Do not touch the sharp aluminium fin.
Heat pump-types only
Part name
Q’ty
Diagram
Application
Drain elbow
1
For connecting
the drain pipe
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2. Installation work
a. Brazing work
Brazing work needs replacing air inside pipe with nitrogen gas in order to prevent oxidization scale from occurring. This is
called nitrogen replacement, and one of very important work in brazing refrigerant piping. (Oxidation preventive is not
possible to use)
called nitrogen replacement, and one of very important work in brazing refrigerant piping. (Oxidation preventive is not
possible to use)
b. Prevention measure for refrigerant piping
Prevention measure for refrigerant piping is very important work to prevent water-dust-rubbish from getting in.
All piping terminals needs sealing such as shown below.
All piping terminals needs sealing such as shown below.
• How to pinch
Close terminal part of piping with pliers and seal the
gap with brazing.
gap with brazing.
• How to tape
Seal terminal part of piping with vinyl tape.
3. Vacuum pumping
The purpose of vacuum pumping work is to remove and dry air inside the piping or nitrogen at air tightness test.
Perform the work carefully.
Perform the work carefully.
Vacuum pump capacity 60 l/min or more
4. Refrigerant filling
Refrigerant filling must be done in the state of liquid refrigerant.
If this is done in gas refrigerant, the balance of refrigerant composition will collapse and damage the operation.
For the use of a gas cylinder without siphon inside, turn it upside down and use it.
(We recommend manifold with sight glass.)
If this is done in gas refrigerant, the balance of refrigerant composition will collapse and damage the operation.
For the use of a gas cylinder without siphon inside, turn it upside down and use it.
(We recommend manifold with sight glass.)
Place
Period of work
Method of seal
Outside
More than 1 month
Pinch
Less than 1 month
Pinch or taping
Inside
Not specified
Use the vacuum pump with the backflow prevention mechanism to prevent backflow of oil.
Vacuuming time
60 minutes or more
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Dry Vacuuming
• If vacuum pump possible vacuuming until less than -100.7kpa.
10.1.3.
Selecting The Outdoor Unit Installation Locations
• Select location which satisfies the following condition, and then confirm with the customer that such a place is satisfactory before
installing the outdoor unit.
1. There should be sufficient ventilation.
2. The outdoor unit should be sheltered as much as
2. The outdoor unit should be sheltered as much as
possible from rain and direct sunlight, and the air
should be able to move around so that hot and cold
air do not build up.
should be able to move around so that hot and cold
air do not build up.
3. There should not be animals or plants near the air
outlet which could be adversely affected by hot or cold
air coming out from the unit.
air coming out from the unit.
4. The outlet air and operating noise should not be a
nuisance to other occupants nearby.
5. The location should be able to withstand the full
weight and vibration of the outdoor unit, and it should
also be level and safe for the unit to be installed.
also be level and safe for the unit to be installed.
6. The intake and outlet should not be covered.
7. There should not be danger of flammable gas or
7. There should not be danger of flammable gas or
corrosive gas leaks.
8. There should be as little back-ventilation (air blowing directly onto the fan) as possible.
(If strong wind blows directly onto the fan, it may cause problems with normal operation.)
• If you know which direction the prevailing wind comes from during the operating season, set the outdoor unit at a right-
angle to this wind direction, or so that the air outlet faces toward a wall or fence.
• If there are obstructions near the outdoor unit and the wind direction is not constant, install an optional air guider.
9. Do not allow any obstacles near the outdoor unit which will interfere with air flow around the air intake and air outlet.
10. If installing in a location which is prone to snowfall, place the installation base as high as possible, and be sure to install a
roof or enclosure which does not allow snow to accumulate.
11. Avoid installing the unit in places where petroleum products (such as machine oil), salinity, sulphurous, gases or high-
frequency noise are present.
CAUTION
Do not use a “CHARGE CYLINDER”.
As a rule, please collect all existing refrigerants in the system outside the system when the
refrigerant leakage occurs by the system.
After that, please fill new refrigerant of a regulated amount again.
refrigerant leakage occurs by the system.
After that, please fill new refrigerant of a regulated amount again.
Running vacuum pump at both liquid and gas side for more than 1 hour and vacuuming until -100.7kpa.
After that keep the pressure -100.7kpa for 1 hour and confirm the vacuum gauge value not increasing.
If vacuum gauge value is increase, there is possibility of water inside the unit or there is any leakage.
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