Toshiba MCY-MHP0806HS8-E, MCY-MHP1006HS8-E User Manual
2FAN_IM_DHV2305601-00_EN.book Page 1 Monday, October 28, 2019 3:25 PM
AIR CONDITIONER (MULTI TYPE)
Installation Manual
DHV2305601-00
English
Outdoor Unit
Model name:
Heat Pump Model
MCY-MHP0806HS8-E
MCY-MHP1006HS8-E
For commercial use
2FAN_IM_DHV2305601-00_EN.book Page 1 Monday, October 28, 2019 3:25 PM
Original instruction
ADOPTION OF NEW REFRIGERANT
This Air Conditioner uses R410A an environmentally friendly refrigerant.
– 1 –
Installation Manual
Contents
1 Precautions for Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2 Accessory Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3 Installation of New Refrigerant Air Conditioner . . . . . . . . . . . . . . . . . 8
4 Installation Conditions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
5 Refrigerant Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
6 Electric Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
7 Address Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
8 Test Run . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
9 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
EN-1 EN-2
2FAN_IM_DHV2305601-00_EN.book Page 2 Monday, October 28, 2019 3:25 PM
Installation Manual
Thank you for purchasing this Toshiba air conditioner.
This Installation Manual describes the installation method of the outdoor unit. For installation of indoor units, follow the
Installation Manual supplied with the indoor unit.
Moreover, as this installation manual includes the important articles concerning the “Machinery” Directive (Directive
2006/42/EC), please read through the manual and make sure you understand it. After installation, give this Installation
Manual, the Owner’s Manual and the Installation Manual supplied with the indoor unit to the customer and tell the
customer to keep them safe.
Prepare an exclusive power source for indoor units, independent to that for outdoor units.
Y-shaped branching joints or a branching header (separately purchased) are required for connecting pipes between
indoor and outdoor units. Choose either of them considering the system capacity concerning piping. For installing
branching pipes, refer to the installation manual of the Y-shaped branching unit or branching header (separately
purchased).
Generic Denomination: Air Conditioner
Definition of Qualified Installer or Qualified Service Person
The air conditioner must be installed, maintained, repaired and removed by a qualified installer or qualified service
person. When any of these jobs is to be done, ask a qualified installer or qualified service person to do them for you.
A qualified installer or qualified service person is an agent who has the qualifications and knowledge described in the
table below.
Agent Qualifications and knowledge which the agent must have
Qualified
installer
• The qualified installer is a person who installs, maintains, relocates and removes the air
conditioners made by Toshiba Carrier Corporation. He or she has been trained to install,
maintain, relocate and remove the air conditioners made by Toshiba Carrier Corporation or,
alternatively, he or she has been instructed in such operations by an individual or individuals
who have been trained and is thus thoroughly acquainted with the knowledge related to these
operations.
• The qualified installer who is allowed to do the electrical work involved in installation,
relocation and removal has the qualifications pertaining to this electrical work as stipulated by
the local laws and regulations, and he or she is a person who has been trained in matters
relating to electrical work on the air conditioners made by Toshiba Carrier Corporation or,
alternatively, he or she has been instructed in such matters by an individual or individuals who
have been trained and is thus thoroughly acquainted with the knowledge related to this work.
• The qualified installer who is allowed to do the refrigerant handling and piping work involved
in installation, relocation and removal has the qualifications pertaining to this refrigerant
handling and piping work as stipulated by the local laws and regulations, and he or she is a
person who has been trained in matters relating to refrigerant handling and piping work on the
air conditioners made by Toshiba Carrier Corporation or, alternatively, he or she has been
instructed in such matters by an individual or individuals who have been trained and is thus
thoroughly acquainted with the knowledge related to this work.
• The qualified installer who is allowed to work at heights has been trained in matters relating to
working at heights with the air conditioners made by Toshiba Carrier Corporation or,
alternatively, he or she has been instructed in such matters by an individual or individuals who
have been trained and is thus thoroughly acquainted with the knowledge related to this work.
Qualified
service
person
• The qualified service person is a person who installs, repairs, maintains, relocates and
removes the air conditioners made by Toshiba Carrier Corporation. He or she has been
trained to install, repair, maintain, relocate and remove the air conditioners made by Toshiba
Carrier Corporation or, alternatively, he or she has been instructed in such operations by an
individual or individuals who have been trained and is thus thoroughly acquainted with the
knowledge related to these operations.
• The qualified service person who is allowed to do the electrical work involved in installation,
repair, relocation and removal has the qualifications pertaining to this electrical work as
stipulated by the local laws and regulations, and he or she is a person who has been trained
in matters relating to electrical work on the air conditioners made by Toshiba Carrier
Corporation or, alternatively, he or she has been instructed in such matters by an individual or
individuals who have been trained and is thus thoroughly acquainted with the knowledge
related to this work.
• The qualified service person who is allowed to do the refrigerant handling and piping work
involved in installation, repair, relocation and removal has the qualifications pertaining to this
refrigerant handling and piping work as stipulated by the local laws and regulations, and he or
she is a person who has been trained in matters relating to refrigerant handling and piping
work on the air conditioners made by Toshiba Carrier Corporation or, alternatively, he or she
has been instructed in such matters by an individual or individuals who have been trained and
is thus thoroughly acquainted with the knowledge related to this work.
• The qualified service person who is allowed to work at heights has been trained in matters
relating to working at heights with the air conditioners made by Toshiba Carrier Corporation
or, alternatively, he or she has been instructed in such matters by an individual or individuals
who have been trained and is thus thoroughly acquainted with the knowledge related to this
work.
Definition of Protective Gear
When the air conditioner is to be transported, installed, maintained, repaired or removed, wear protective gloves and
‘safety’ work clothing.
In addition to such normal protective gear, wear the protective gear described below when undertaking the special
work detailed in the table below.
Failure to wear the proper protective gear is dangerous because you will be more susceptible to injury, burns, electric
shocks and other injuries.
Work undertaken Protective gear worn
All types of work Protective gloves
Electrical-related
work
Work done at heights
(50 cm or more)
Transportation of
heavy objects
Repair of outdoor
unit
‘Safety’ working clothing
Gloves to provide protection for electricians
Insulating shoes
Clothing to provide protection from electric shock
Helmets for use in industry
Shoes with additional protective toe cap
Gloves to provide protection for electricians
EN
EN-3 EN-4
– 2 –
CAUTION
Do not touch the aluminum
fins of the unit.
Doing so may result in injury.
CAUTION
BURST HAZARD
Open the service valves before
the operation, otherwise there
might be the burst.
Never recover the refrigerant
into the outdoor outdoor unit.
01_IM_DHV2305601-00_EN.fm Page 3 Thursday, December 5, 2019 5:00 PM
Warning Indications on the Air Conditioner Unit
Warning indication Description
WARNING
ELECTRICAL SHOCK HAZARD
Disconnect all remote
electric power supplies
before servicing.
WARNING
ELECTRICAL SHOCK HAZARD
Disconnect all remote electric
power supplies before servicing.
WARNING
WARNING
Moving parts.
Do not operate unit with grille
removed.
Stop the unit before the servicing.
Moving parts.
Do not operate unit with grille
removed.
Stop the unit before the servicing.
CAUTION
High temperature parts.
You might get burned
when removing this panel.
CAUTION
High temperature parts.
You might get burned when
removing this panel.
– 3 –
CAUTION
Do not climb onto the
top side.
Doing so may result in injury.
Installation Manual
CAUTION
BURST HAZARD
Open the service valves before
the operation, otherwise there
might be the burst.
Never recover the refrigerant into
the outdoor outdoor unit.
CAUTION
Do not climb onto the fan
guard.
Doing so may result in injury.
EN-5 EN-6
CAUTION
Do not touch the aluminum fins of
the unit.
Doing so may result in injury.
WARNING
01_IM_DHV2305601-00_EN.fm Page 4 Wednesday, November 27, 2019 11:26 AM
Installation Manual
1 Precautions for Safety
The manufacturer shall not assume any liability for the damage
caused by not observing the description of this manual.
General
• Before starting to install the air conditioner, read through the
Installation Manual carefully, and follow its instructions to install the
air conditioner. Otherwise, falling down of the unit may occur, or the
unit may cause noise, vibration or water leakage.
• Only a qualified installer or qualified service person is allowed to do
installation work. If installation is carried out by an unqualified
individual, a fire, electric shocks, injury, water leakage, noise and /
or vibration may result.
• Do not use any refrigerant different from the one specified for
complement or replacement. Otherwise, abnormally high pressure
may be generated in the refrigeration cycle, which may result in a
failure or explosion of the product or an injury to your body.
• If using separately sold products, make sure to use Toshiba
specified products only. Using unspecified products may cause fire,
electric shock, water leak or other failure.
• Before opening the service panel of the outdoor unit, set the circuit
breaker to the OFF position. Failure to set the circuit breaker to the OFF
position may result in electric shocks through contact with the interior
parts. Only a qualified installer or qualified service person is allowed to
remove the service panel of the outdoor unit and do the work required.
• Before carrying out the installation, maintenance, repair or removal
work, be sure to set the circuit breakers for both the indoor and
outdoor units to the OFF position. Otherwise, electric shock may
result.
• Place a “Work in progress” sign near the circuit breaker while the
installation, maintenance, repair or removal work is being carried
out. There is a danger of electric shocks if the circuit breaker is set
to ON by mistake.
• Only a qualified installer or qualified service person is allowed to
undertake work at heights using a stand of 50 cm or more.
• When working at heights, use a ladder which complies with the ISO
14122 standard, and follow the procedure in the ladders
instructions. Also wear a helmet for use in industry as protective
gear to undertake the work.
• Wear protective gloves and safety work clothing during installation,
servicing and removal.
• Do not touch the aluminium fin of the outdoor unit. You may injure
yourself if you do so. If the fin must be touched for some reason, first
put on protective gloves and safety work clothing, and then proceed.
• Do not climb onto or place objects on top of the outdoor unit. You may
fall or the objects may fall off of the outdoor unit and result in injury.
• When working at height, put a sign in place so that no-one will
approach the work location before proceeding with the work. Parts
or other objects may fall from above, possibly injuring a person
below. Also, be sure that workers put on helmets.
• When cleaning the filter or other parts of the outdoor unit, set the
circuit breaker to OFF without fail, and place a “Work in progress”
sign near the circuit breaker before proceeding with the work.
• The refrigerant used by this air conditioner is the R410A.
• You shall ensure that the air conditioner is transported in stable
condition. If you find any part of the product broken, contact your dealer.
• Do not modify the products. Do not also disassemble or modify the
parts. It may cause a fire, electric shock or injury.
• Before starting to repair the air conditioner, read carefully through
the Service Manual, and repair the air conditioner by following its
instructions.
• Only qualified service person is allowed to repair the air conditioner.
Repair of the air conditioner by unqualified person may give rise to a
fire, electric shocks, injury, water leaks and/or other problem.
• Once the repair work has been completed, check for refrigerant
leaks, and check the insulation resistance and water drainage. Then
perform a trial run to check that the air conditioner is running properly.
EN
EN-7 EN-8
– 4 –
01_IM_DHV2305601-00_EN.fm Page 5 Wednesday, November 27, 2019 11:26 AM
• This appliance is intended to be used by expert or trained users in
shops, in light industry, or for commercial use by lay persons.
• 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.
Selection of installation location
• If you install the unit in a small room, take appropriate measures to
prevent the refrigerant from exceeding the limit concentration even if it
leaks. Consult the dealer from whom you purchased the air conditioner
when you implement the measures. Accumulation of highly
concentrated refrigerant may cause an oxygen deficiency accident.
• Do not install the air conditioner in a location that may be subject to
a risk of exposure to a combustible gas. If a combustible gas leaks
and becomes concentrated around the unit, a fire may occur.
• When transporting the air conditioner, wear shoes with additional
protective toe caps.
• When transporting the air conditioner, do not take hold of the bands around
the packing carton. You may injure yourself if the bands should break.
• Do not place any combustion appliance in a place where it is
directly exposed to the wind of air conditioner, otherwise it may
cause imperfect combustion.
• Places where the operation sound of the outdoor unit may cause a
disturbance. (Especially at the boundary line with a neighbour,
install the air conditioner while considering the noise.)
• When transporting the air conditioner, use a forklift and when
moving the air conditioner by hand, move the unit with 6 people.
Installation
• Follow the instructions in the installation manual to install the air
conditioner. Failure to follow these instructions may cause the
– 5 –
Installation Manual
product to fall down or topple over or give rise to noise, vibration,
water leakage, etc.
• The designated bolts (M12) and nuts (M12) for securing the
outdoor unit must be used when installing the unit.
• Install the outdoor unit property in a location that is durable enough
to support the weight of the outdoor unit. Insufficient durability may
cause the outdoor unit to fall, which may result in injury.
• Install the unit in the prescribed manner for protection against
strong wind and earthquake. Incorrect installation may result in the
unit falling down, or other accidents.
• Be sure to fix the screws back which have been removed for
installation or other purposes.
Refrigerant piping
• Install the refrigerant pipe securely during the installation work
before operating the air conditioner. If the compressor is operated
with the valve open and without refrigerant pipe, the compressor
sucks air and the refrigeration cycles is over pressurized, which
may cause a injury.
• Tighten the flare nut with a torque wrench in the specified manner.
Excessive tighten of the flare nut may cause a crack in the flare nut
after a long period, which may result in refrigerant leakage.
• Ventilate the air if the refrigerant gas leaks during installation. If the
leaked refrigerant gas comes into contact with fire, toxic gas may
be produced.
• After installation work, check the refrigerant gas does not leak. If
the refrigerant gas leaks in the room, poisonous gas generates
when gas touches to fire such as fan heater, stove or cocking stove
though the refrigerant gas itself is innocuous.
• When the air conditioner has been installed or relocated, follow the
instructions in the Installation Manual and purge the air completely
so that no gases other than the refrigerant gas will be mixed in the
refrigerating cycle. Failure to purge the air completely may cause
the air conditioner to malfunction.
EN-9 EN-10
01_IM_DHV2305601-00_EN.fm Page 6 Wednesday, November 27, 2019 11:26 AM
Installation Manual
• Nitrogen gas must be used for the airtight test.
• The charge hose must be connected in such a way that it is not slack.
• If refrigerant gas has leaked during the installation work, ventilate
the room immediately. If the leaked refrigerant gas comes in
contact with fire, noxious gas may be generated.
Electrical wiring
• Only a qualified installer or qualified service person is allowed to
carry out the electrical work of the air conditioner. Under no
circumstances must this work be done by an unqualified individual
since failure to carry out the work properly may result in electric
shocks and / or electrical leaks.
• When connecting the electrical wires, repairing the electrical parts
or undertaking other electrical jobs, wear gloves to provide
protection for electricians, insulating shoes and clothing to provide
protection from electric shocks. Failure to wear this protective gear
may result in electric shocks.
• When executing address setting, test run, or troubleshooting
through the checking window on the electric parts box, put on
insulated gloves to provide protection from electric shock.
Otherwise you may receive an electric shock.
• Use wiring that meets the specifications in the Installation Manual
and the stipulations in the local regulations and laws. Use of wiring
which does not meet the specifications may give rise to electric
shocks, electrical leakage, smoking and / or a fire.
• Check that the product is properly earthed. (grounding work)
Incomplete earthing may cause electric shock.
• Do not connect the earth line to a gas pipe, water pipe, lightning
conductor, or a telephone earth line.
• After completing the repair or relocation work, check that the
ground wires are connected properly.
• Install a circuit breaker that meets the specifications in the installation
manual and the stipulations in the local regulations and laws.
• Install the circuit breaker where it can be easily accessed by the
qualified service person.
• When installing the circuit breaker outdoors, install one which is
designed to be used outdoors.
• Under no circumstances must the power cable be extended.
Connection trouble in the places where the cable is extended may
give rise to smoking and / or a fire.
• Electrical wiring work shall be conducted according to law and
regulation in the community and installation manual. Failure to do
so may result in electrocution or short circuit.
• Do not supply power from the power terminal block equipped on
the outdoor unit to another outdoor unit. Capacity overflow may
occur on the terminal block and may result in fire.
• When carrying out electric connection, use the wire specified in the
Installation Manual and connect and fix the wires securely to
prevent them applying external force to the terminals. Improper
connection or fixing may result in fire.
• If the supply cord is damaged, it must be replaced by the
manufacturer, its service agent or similarly qualified persons in
order to avoid a hazard.
Installation of earth leakage circuit breaker
• Install the earth leakage circuit breaker that meets the stipulations
in the local regulations and laws.
• The earth leakage circuit breaker needs to have over-current
protection and leakage prevention function that can be manually reset.
Test run
• Before operating the air conditioner after having completed the
work, check that the electrical parts box cover of the indoor unit and
service panel of the outdoor unit are closed, and set the circuit
breaker to the ON position. You may receive an electric shock if the
power is turned on without first conducting these checks.
• When you have noticed that some kind of trouble (such as when an
error display has appeared, there is a smell of burning, abnormal
sounds are heard, the air conditioner fails to cool or heat or water is
EN
EN-11 EN-12
– 6 –
CAUTION
01_IM_DHV2305601-00_EN.fm Page 7 Wednesday, November 27, 2019 11:26 AM
leaking) has occurred in the air conditioner, do not touch the air
conditioner yourself but set the circuit breaker to the OFF position,
and contact a qualified service person. Take steps to ensure that
the power will not be turned on (by marking “out of service” near
the circuit breaker, for instance) until qualified service person
arrives. Continuing to use the air conditioner in the trouble status
may cause mechanical problems to escalate or result in electric
shocks or other failure.
• After the work has finished, be sure to use an insulation tester set
(500 V Megger) to check the resistance is 1 MΩ or more between
the charge section and the non-charge metal section (Earth
section). If the resistance value is low, a disaster such as a leak or
electric shock is caused at user’s side.
• Upon completion of the installation work, check for refrigerant leaks
and check the insulation resistance and water drainage. Then
conduct a test run to check that the air conditioner is operating
properly.
Explanations given to user
• Upon completion of the installation work, tell the user where the
circuit breaker is located. If the user does not know where the
circuit breaker is, he or she will not be able to turn it off in the event
that trouble has occurred in the air conditioner.
• If you have discovered that the fangard is damaged, do not
approach the outdoor unit but set the circuit breaker to the OFF
position, and contact a qualified service person to have the repairs
done. Do not set the circuit breaker to the ON position until the
repairs are completed.
• After the installation work, follow the Owner’s Manual to explain to
the customer how to use and maintain the unit.
Relocation
• Only a qualified installer or qualified service person is allowed to
relocate the air conditioner. It is dangerous for the air conditioner to
be relocated by an unqualified individual since a fire, electric
– 7 –
Installation Manual
shocks, injury, water leakage, noise and / or vibration may result.
• When carrying out the pump-down work shut down the compressor
before disconnecting the refrigerant pipe. Disconnecting the
refrigerant pipe with the service valve left open and the compressor
still operating will cause air or other gas to be sucked in, raising the
pressure inside the refrigeration cycle to an abnormally high level,
and possibly resulting in rupture, injury or other trouble.
• Never recover the refrigerant into the outdoor unit. Be sure to use a
refrigerant recovery machine to recover the refrigerant when moving
or repairing. It is impossible to recover the refrigerant into the outdoor
unit. Refrigerant recovery into the outdoor unit may result in serious
accidents such as explosion of the unit, injury or other accidents.
New Refrigerant Air Conditioner Installation
• This air conditioner adopts the new HFC refrigerant (R410A) which
does not destroy ozone layer.
• The characteristics of R410A refrigerant are; easy to absorb water,
oxidizing membrane or oil, and its pressure is approx. 1.6 times
higher than that of refrigerant R22. Accompanied with the new
refrigerant, refrigerating oil has also been changed. Therefore,
during installation work, be sure that water, dust, former refrigerant,
or refrigerating oil does not enter the refrigerating cycle.
• To prevent charging an incorrect refrigerant and refrigerating oil,
the sizes of connecting sections of charging port of the main unit
and installation tools are changed from those for the conventional
refrigerant.
• Accordingly the exclusive tools are required for the new refrigerant
(R410A).
• For connecting pipes, use new and clean piping designed for
R410A, and please care so that water or dust does not enter.
EN-13 EN-14
NOTE
01_IM_DHV2305601-00_EN.fm Page 8 Wednesday, November 27, 2019 11:26 AM
Installation Manual
2 Accessory Parts
Part name Q’ty Shape Usage
Owner’s Manual 1 Hand this directly to the customer.
Installation Manual 1 Hand this directly to the customer.
CD-ROM
(Owner’s manual,
Installation manual)
F-GAS label 1 Fill the items on the label after adding refrigerant.
Attached pipe 1
• Before installing the unit, check that the unit has the correct model name to prevent the wrong unit from being
installed in the wrong place.
• Before proceeding to braze the refrigerant pipe, be sure to pass nitrogen through the pipe.
• Before installing the indoor units, read the instructions in the installation manual provided with the indoor units.
• Before installing a branch pipe, read the instructions in the installation manual provided with the branch pipe kit.
1-
For other languages that do not appear in this Installation
Manual, Please refer to the enclosed CD-ROM.
Gas pipe connection pipe
Ø19.05 to Ø22.22 (MCY-MHP1006HS8* only)
3 Installation of New Refrigerant Air
Conditioner
This air conditioner adopts the new HFC refrigerant (R410A) which does not deplete the ozone layer.
• R410A refrigerant is vulnerable to impurities such as water, oxidizing membranes, or oils because the pressure of
R410A refrigerant is higher than that of the former refrigerant by approximately 1.6 times.
As well as the adoption of the new refrigerant, the refrigerating oil has been also changed. Therefore, pay attention
so that water, dust, former refrigerant, or refrigerating oil does not enter the refrigerating cycle of the new refrigerant
air conditioner during installation.
• To prevent mixing of refrigerant or refrigerating oil, the size of the charge port of the main unit or connecting section
of the installation tool differs to that of an air conditioner for the former refrigerant.
Accordingly, exclusive tools are required for the new refrigerant (R410A) as shown below.
• For connecting pipes, use new and clean piping materials so that water or dust does not enter.
Required tools and cautions on handling
It is necessary to prepare the tools and parts for installation as described below. The tools and parts which will be
newly prepared in the following items should be restricted to exclusive use.
Explanation of symbols
: Newly prepared (It is necessary to use it exclusively with R410A, separately from those for R22 or R407C.)
: Former tool is available.
Used tools Usage Proper use of tools / parts
Gauge manifold
Charging hose Exclusive to R410A
Charging cylinder Charging refrigerant
Gas leak detector Checking gas leak Exclusive to R410A
Vacuum pump Vacuum drying
Vacuum pump with counterflow Vacuum drying R22 (Existing article)
Flare tool Flare processing of pipes Usable by adjusting size
Bender Bending processing of pipes R22 (Existing article)
Refrigerant recovery device Recovering refrigerant Exclusive to R410A
Torque wrench Tightening flare nut Exclusive to Ø12.70 mm and Ø15.88 mm
Pipe cutter Cutting pipes R22 (Existing article)
Refrigerant canister Charging refrigerant
Welding machine / Nitrogen gas
cylinder
Refrigerant charging balance Charging refrigerant R22 (Existing article)
Vacuuming, charging refrigerant
and operation check
Welding of pipes R22 (Existing article)
Exclusive to R410A
Unusable (Use the Refrigerant charging
balance.)
Usable if a counter-flow preventive adapter is
attached
Exclusive to R410A
Enter the refrigerate name for identification
EN
EN-15 EN-16
– 8 –
WARNING
CAUTION
WARNING
CAUTION
01_IM_DHV2305601-00_EN.fm Page 9 Wednesday, November 27, 2019 11:26 AM
4 Installation Conditions
Before installation
Be sure to prepare to the following items before installation.
Airtight test
1 Before starting an airtight test, further tighten the spindle valves on the gas and liquid sides.
2 Pressurize the pipe with nitrogen gas charged from the service port to the design pressure to conduct an
airtight test.
3 After the airtight test is completed, evacuate the nitrogen gas.
Air purge
• To purge air, use a vacuum pump.
• Do not use refrigerant charged in the outdoor unit to purge air. (The air purge refrigerant is not contained in the
outdoor unit.)
Electrical wiring
Be sure to fix the power wires, indoor / outdoor connecting wires and remote controller wires with clamps so that they
do not come into contact with the cabinet, etc.
Earthing
Make sure that proper earthing is provided.
Improper earthing may cause an electric shock. For details on how
to check earthing, contact the dealer who installed the air conditioner
or a professional installation company.
– 9 –
Installation Manual
Installation location
Install the outdoor unit properly in a location that is durable
enough to support the weight of the outdoor unit.
Insufficient durability may cause the outdoor unit to fall, which may
result in injury.
This outdoor unit has a weight of about 147 kg. Pay special attention
when installing the unit onto a wall surface.
Do not install the outdoor unit in a location that is subject to
combustible gas leaks.
Accumulation of combustible gas around the outdoor unit may cause
a fire.
Install the outdoor unit in a location that meets the following conditions after the customer’s consent is
obtained.
• A well-ventilated location free from obstacles near the air intake and air discharge
• A location that is not exposed to rain or direct sunlight
• A location that does not increase the operating noise or vibration of the outdoor unit
• A location that does not produce any drainage problems from discharged water
• Proper earthing can prevent charging of electricity on the outdoor unit surface due to the presence of a high
frequency in the frequency converter (inverter) of the outdoor unit, as well as prevent electric shock. If the outdoor
unit is not properly earthed, you may be exposed to an electric shock.
• Be sure to connect the earth wire (grounding work).
Incomplete earthing can cause an electric shock.
Do not connect earth wires to gas pipes, water pipes, lightning rods or earth wires for telephone wires.
Test run
Turn on the leakage breaker at least 12 hours before starting a test run to protect the compressor.
Incorrect installation work may result in a malfunction or complaints
from customers.
Do not install the outdoor unit in the following locations.
• A location with a saline atmosphere (coastal area) or one that is full of sulfide gas (hot-spring area) (Special
maintenance is required.)
• A location subject to oil, vapor, oily smoke, or corrosive gases
• A location in which organic solvent is used
• Places where iron or other metal dust is present. If iron or other metal dust adheres to or collects on the interior of
the air conditioner, it may spontaneously combust and start a fire.
• A location where high-frequency equipment (including inverter equipment, private power generator, medical
equipment, and communication equipment) is used
(Installation in such a location may cause malfunction of the air conditioner, abnormal control or problems due to
noise from such equipment.)
• A location in which the discharged air of the outdoor unit blows against the window of a neighboring house
• A location where the operating noise of the outdoor unit is transmitted
• When the outdoor unit is installed in an elevated position, be sure to secure its fixing leg.
• A location in which drain water poses any problems.
When collectively draining discharged water completely, use a drain pan.
EN-17 EN-18
CAUTION
800 mm
Strong wind
Strong wind
<Example>
Snow shield
Snow shield
01_IM_DHV2305601-00_EN.fm Page 10 Wednesday, November 27, 2019 11:26 AM
1. Install the outdoor unit in a location where the discharge air is not
blocked.
2. When an outdoor unit is installed in a location that is always
exposed to strong winds like a coast or on the high stories of a
building, secure normal fan operation by using a duct or wind
shield.
3. When installing the outdoor unit in a location that is constantly
exposed to strong winds such as on the upper stairs or rooftop of
a building, apply the wind-proofing measures referred to in the
following examples.
1) Install the unit so that its discharge port faces the wall of the building.
Keep a distance 800 mm or more between the unit and wall surface.
Installation Manual
4. When installing the unit in an area where snowfalls may be heavy,
take steps to prevent the unit from being adversely affected by the
fallen or accumulated snow.
• Either make the foundation higher or install a stand (which is high enough to ensure that the unit will be above
the fallen or accumulated snow) and place the unit on it.
• Attach a snow shield (locally procured).
EN
2) Consider the wind direction during the operational season of the air conditioner, and install the unit so that the
discharge port is set at a right angle relative to the wind direction.
EN-19 EN-20
– 10 –
150 or more
150 or more 300 or more
200 or more
The height of the
obstacle should be
lower than the height
of the outdoor unit.
150 or
more
200 or more
300 or
more
300 or
more
300 or
more
150 or
more
500 or more
800 or more
1,000 or
more
300 or more 300 or more
1,000 or more
800 or more
150 or more
800 or more
300 or more
150 or
more
1,000
or more
1,000
or more
200 or
more
250 or more
250 or
more
1,000 or
more
300 or
more
1,500 or
more
2,000 or
more
200 or
more
Drain hole
Knockout hole
Back side
Front side (Air discharge side)
01_IM_DHV2305601-00_EN.fm Page 11 Wednesday, November 27, 2019 11:26 AM
Necessary space for installation
(Unit: mm)
Be sure to observe the necessary space for instllation.
Install the outdoor unit in a well-ventilated location.
Failure to do so may cause short circuit (intake of discharge air) or performance deterioration due to locations around
the outdoor unit.
Obstacle at rear side
Upper side is free
1. Single unit installation
2. Obstacles on both right and left sides
3. Serial installation of two or more units
The height of the obstacle should be lower than the
height of the outdoor unit.
Obstacle in front
Above unit is free
1. Single unit installation
2. Serial installation of two or more units
Obstacle also above unit
Obstacles in front and both right and left side
– 11 –
Installation Manual
Obstacles in both front and rear of unit
Open above and to the right and left of the unit.
The height of an obstacle in both the front and rear of the
unit, should be lower than the height of the outdoor unit.
Standard installation
1. Single unit installation
2. Serial installation of two or more units
Serial installation in front and rear
Open above and to the right and left of the unit.
The height of an obstacle in both the front and rear of the
unit should be lower than the height of the outdoor unit.
Standard installation
Installation of outdoor unit
• Before installation, check the strength and horizontalness of the base so that abnormal sounds do not emanate.
• According to the following base diagram, fix the base firmly with the anchor bolts.
(Anchor bolt, nut: M12 x 4 pairs)
164 660 164
Obstacle also above unit
EN-21 EN-22
490
445
CAUTION
Fixing leg
Correct Correct
Foundation
Absorb vibration with
vibration-proof rubber
pads
Foundation
Bottom plate of
outdoor unit
Support the bottom surface of the
fixing leg that is in contact with and
underneath the bottom plate of the
outdoor unit.
Incorrect
If only the end of the
fixing leg is supported,
it may deform.
Do not support the outdoor
unit only with the fixing leg.
Foundation
20 or less
Tip-over prevention part
Tip-over prevention part
01_IM_DHV2305601-00_EN.fm Page 12 Thursday, December 5, 2019 4:55 PM
Installation Manual
• As shown in the figure below, install vibration-proof rubber pads to directly support the bottom surface of the fixing leg.
* When installing the foundation for an outdoor unit with downward piping, consider the piping work.
Set the out margin of the anchor bolt to 20 mm or less.
• When the unit is to be installed in a location where it is likely to be exposed to strong winds or where the foundation
is unstable, additional measures must be taken to prevent tip-over as shown in the figure below.
For reference
If a heating operation is to be continuously performed for a long time under the condition that the outdoor temperature
is 0 °C or lower, draining defrosted water may be difficult due to the bottom plate freezing, resulting in trouble with the
cabinet or fan.
It is recommended to procure an anti-freeze heater locally in order to safely install the air conditioner.
For details, contact the dealer.
EN
• Carry out the installation work by following the prescribed
procedure to make provision against the shaking of the unit caused
by strong winds, earthquakes, etc.
• Failure to carry out the installation work as prescribed may lead to
the unit tipping over, in turn causing an accident.
EN-23 EN-24
– 12 –
REQUIREMENT
Side
Bottom
Front
CAUTION
90°
Correct
Incorrect Incorrect Incorrect
Obliquity Roughness
Warp
A
B
01_IM_DHV2305601-00_EN.fm Page 13 Thursday, December 5, 2019 4:55 PM
5 Refrigerant Piping
Leading out the pipes
• The indoor/outdoor unit connecting pipes can be connected in any of 3 directions. Use a screwdriver to punch out
the knockout part of the front panel or base. Wear heavy work gloves to protect yourself from injury while doing this
work. After punching out the knockout hole in a manner which ensures that the pipes and wires will not be damaged
in any way, remove the burrs from around the hole.
Follow the instructions in the installation manual provided with the branch pipe kit and the instructions in the
installation manual of the indoor unit to connect the refrigerant pipe between the branch pipe and indoor unit.
– 13 –
Installation Manual
Refrigerant piping connection
TAKE NOTE OF THESE 4 IMPORTANT POINTS BELOW FOR
PIPING WORK
1. Keep dust and moisture away from inside the connecting pipes.
2. Tightly connect the connection between pipes and the unit.
3. Evacuate the air in the connecting pipes using a VACUUM PUMP.
4. Check for gas leaks at connection points.
Pipe connection method
Flaring
1. Cut the pipe with a pipe cutter.
2. Remove the burr inside of the pipe. When removing the burr, be careful so that chips do not fall into the pipe.
3. Remove the flare nuts attached to the outdoor / indoor unit, then insert them into each of the pipes.
4. Flare the pipes. See the following table for the projection margin (A) and flaring size (B).
Pipe A B Flare Nut
Outside
diameter
mm mm mm mm mm mm N•m kgf•m
6.35 0.8 0 to 0.5 1.0 to 1.5 9.9 17 14 to 18 1.4 to 1.8
9.52 0.8 0 to 0.5 1.0 to 1.5 13.2 22 33 to 42 3.3 to 4.2
12.70 0.8 0 to 0.5 1.0 to 1.5 16.6 26 50 to 62 5.0 to 6.2
15.88 1.0 0 to 0.5 1.0 to 1.5 19.7 29 68 to 82 6.8 to 8.2
19.05 1.2 0 to 0.5 1.0 to 1.5 24.0 36 100 to 120 10.0 to 12.0
* In case of flaring for R410A with the conventional flare tool, pull the tool out approx. 0.5 mm more than that for R22
to adjust it to the specified flare size. The copper pipe gauge is useful for adjusting the projection margin size.
Thickness
Rigid
(clutch type)
R410A tool
Imperial
(wing nut type)
R410A tool
Width across
flat
Tighten torque
EN-25 EN-26
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