Panasonic U-140PZ2E8 Air Conditioner Outdoor Unit User Manual
- June 16, 2024
- Panasonic
Table of Contents
- U-140PZ2E8 Air Conditioner Outdoor Unit
- Product Information
- Specifications
- Product Usage Instructions
- Installation
- Precautions in Terms of Safety
- Warnings
- Q: Can I install the air conditioner myself?
- Q: What should I do if I encounter any issues during
- Q: Can I connect this outdoor unit to any indoor unit?
U-140PZ2E8 Air Conditioner Outdoor Unit
Product Information
Specifications
-
Model Name: U-100PZ2E5, U-100PZ2E8, U-125PZ2E5, U-125PZ2E8,
U-140PZ2E5, U-140PZ2E8 -
HP: 4 HP, 5 HP, 6 HP
-
Refrigerant: R32
Product Usage Instructions
Installation
-
This air conditioner must only be installed or serviced by
qualified personnel. -
Before installation, maintenance, or service, refer to
Commonwealth, State, Territory, and local legislation, regulations,
codes, installation & operating instructions. -
Refer to the indoor unit installation instruction manual for
the indoor unit installation. -
Hand over this installation instruction manual to the person
performing the installation and inform the customer to keep it
properly stored. -
Refer to the caution items listed in section 5 (REFRIGERANT
INSTALLATION) for the installation of the refrigerant piping and
maintain strict control concerning the prevention of mixing
impurities (water and mineral oils such as Suniso oils) with
R32. -
The indoor unit to be connected must be R32 compatible. Check
the catalogue for available models. Connecting to other indoor
units may result in improper operation.
Precautions in Terms of Safety
Carry out installation work with reliability after thoroughly
reading this Precaution in terms of safety.
Items that have the potential to result in fatality or serious
injury if wrong installation is carried out are listed in the
column of WARNING. Observe them without fail.
Warnings
-
An unventilated area where the appliance using flammable
refrigerants is installed must be constructed to prevent fire or
explosion hazards in case of refrigerant leaks. -
The appliance should be stored in a well-ventilated area with
room size corresponding to the specified operation area. -
Avoid storing the appliance in a room with continuously
operating open flames or ignition sources. -
Do not sit or step on the unit to avoid accidental falls.
-
Avoid installing the outdoor unit near the handrail of a
veranda, especially in high-rise buildings, to prevent accidents
caused by climbing on the unit and crossing over the handrail. -
Do not insert fingers or other objects into the fan case to
prevent injuries and damage to the unit. -
During piping work, do not mix air with refrigeration cycle
except for the specified refrigerant (R32). Mixing air can cause
capacity issues, explosion risks, and injuries due to high tension
inside the refrigerant cycle.
FAQ
Q: Can I install the air conditioner myself?
A: No, this air conditioner must only be installed or serviced
by qualified personnel.
Q: What should I do if I encounter any issues during
installation or service?
A: Refer to Commonwealth, State, Territory, and local
legislation, regulations, codes, installation & operating
instructions for guidance. If needed, contact the manufacturer or a
qualified technician for assistance.
Q: Can I connect this outdoor unit to any indoor unit?
A: No, the indoor unit to be connected must be R32 compatible.
Check the catalogue for available models. Connecting to other
indoor units may result in improper operation.
ENGLISH
ACXF60-30041
INSTALLATION INSTRUCTIONS OUTDOOR UNIT
HP 4 HP 4 HP
MODEL NAME U-100PZ2E5 U-100PZ2E8
HP 5 HP 5 HP
MODEL NAME U-125PZ2E5 U-125PZ2E8
HP 6 HP 6 HP
MODEL NAME U-140PZ2E5 U-140PZ2E8
CAUTION
R32
REFRIGERANT
This Air Conditioner contains and operates with refrigerant R32. THIS PRODUCT
MUST ONLY BE INSTALLED OR SERVICED BY QUALIFIED PERSONNEL.
Refer to Commonwealth, State, Territory and local legislation, regulations,
codes, installation & operating instructions, before the installation,
maintenance and/or service of this product.
Refer to the indoor unit installation instruction manual for the indoor unit
installation.
Note: Ensure to hand over this installation instruction manual to the person
performing the installation and inform the customer to keep it properly
stored.
Refer to the caution items listed in “5.REFRIGERANT INSTALLATION” for the
installation of the refrigerant piping and maintain strict control concerning
the prevention of mixing impurities (water and mineral oils such as Suniso
oils) with R32. The indoor unit to be connected must be R32 compatible and be
sure to check the catalogue, etc. for available models. The product may not
operation properly if connected to other indoor units.
PRECAUTIONS IN TERMS OF SAFETY
Carry out installation work with reliability after thorough reading of this “Precaution in terms of safety”.
· 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.
· As to indications with illustration.
This mark means “CAUTION” or “WARNING”.
This mark means “protective earth”.
The items to be followed are classified by symbols:
Symbol with white background denotes item that is PROHIBITED.
Symbol with dark background denotes item that must be carried out.
· 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 operating instructions. In addition, request the
customer to keep this installation instructions for installation work together
with operating instructions.
WARNING
Do not use means to accelerate the defrosting process or to clean, other than
those recommended by the manufacturer. The appliance shall be stored in a room
without continuously operating ignition sources (for example: open flames, an
operating gas appliance or an operating electric heater.) Do not pierce or
burn. Be aware that refrigerants may not contain an odour. Appliance shall be
installed, operated and stored in a room with a floor area larger than (Amin)
m2. As for (Amin), see the section “Check of Density Limit”.
An unventilated area where the appliance using flammable refrigerants is
installed shall be so constructed that should any refrigerant leak, it will
not stagnate so as to create a fire or explosion hazard.
The appliance shall be stored in a well-ventilated area where the room size
corresponds to the room area as specified for operation.
The appliance shall be stored in a room without continuously operating open
flames (for example an operating gas appliance) and ignition sources (for
example an operating electric heater).
Do not sit or step on the unit, you may fall down accidentally.
Do not install outdoor unit near handrail of veranda. When installing air-
conditioner unit on veranda of a high rise building, child may climb up to
outdoor unit and cross over the handrail causing an accident.
Do not insert your fingers or other objects into the FAN CASE, you may be
injured and the unit may be damaged.
When performing piping work do not mix air except for specified refrigerant
(R32) in refrigeration cycle. It causes capacity down, and risk of explosion
and injury due to high tension inside the refrigerant cycle.
Do not add or replace refrigerant other than specified type. It may cause
product damage, burst and injury etc.
Do not clean inside the indoor and outdoor units by users. Engage authorized
dealer or specialist for cleaning.
In case of malfunction of this appliance, do not repair by yourself. Contact
to the sales dealer or service dealer for a repair.
Must not use other parts except original optional parts described in catalogue
and manual.
The appliance shall be stored so as to prevent mechanical damage from
occurring.
Keep plastic bag (packaging material) away from small children, it may cling
to nose and mouth and prevent breathing.
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 arising from overturn, 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. Be careful
when picking up and moving the indoor and outdoor units. Get a partner to
help, and bend your knees when lifting to reduce strain on your back. Sharp
edges or thin aluminum fins on the air conditioner can cut your fingers.
During pump-down operation must stop the compressor before disconnecting the
piping installation. (Disconnecting the refrigerant piping, while the
compressor is operating with the 3-way valve opened, leads to air intake and
an abnormal high pressure in the refrigerant cycle which can cause an
explosion and / or injury.)
During installation, ensure that the refrigerant piping is installed before
operating the compressor. (Do not install the refrigerant piping while the
compressor is operating with the 3-way valve opened, as this leads to air
intake and an abnormal high pressure in the refrigerant cycle which may cause
an explosion and / or injury.)
If refrigerant gas escaped 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.
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.
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.
Improper fixing of screw may cause leakage current and electrical shock.
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.
Provide a power outlet exclusively for each unit, and full disconnection means
having a contact separation in all poles must be incorporated in the fixed
wiring in accordance with the wiring rules.
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.
Cables connected to outdoor unit must be approved polychloroprene sheathed
type 60245 IEC 57 or H05RN-F/H07RN-F or heavier.
The units must be connected to the supply cables for fixed wiring by qualified
technician.
Circuit breaker must be incorporated in the fixed wiring in accordance with
the national wiring regulations.
The circuit breaker must be approved, suitable for the voltage and current
ratings of equipment and have a contact separation by 3mm in all poles. When
the supply cable is damaged, it must be replaced by qualified technician.
Be sure to install a current leakage breaker, main switch and fuse to the main
power supply, otherwise electric shock may result.
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.
CAUTION
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.
Do not touch the air inlet or the sharp aluminium fin, you may get injured.
Be sure that the shield part of the shielded cable does not touch the terminal
block or any live parts. Failure to do so may lead to electric shock or fire.
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.
Before wiring confirm the rated voltage of the unit as shown on its nameplate,
then carry out the wiring closely following the wiring diagram.
PRECAUTION FOR USING R32 REFRIGERANT
· The basic installation work procedures are the same as conventional
refrigerant (R410A, R22) models. However, pay careful attention to the
following points:
WARNING
Since the working pressure is higher than that of refrigerant R22 models, some
of the piping and installation and service tools are special. Especially, when
replacing a refrigerant R22 model with a new refrigerant R32 model, always
replace the conventional piping and flare nuts with the R32 and R410A piping
and flare nuts on the outdoor unit side. For R32 and R410A, the same flare nut
on the outdoor unit side and pipe can be used.
Models that use refrigerant R32 and R410A have a different charging port
thread diameter to prevent erroneous charging with refrigerant R22 and for
safety. Therefore, check beforehand.
Be more careful than R22 so that foreign matter (oil, water, etc.) does not
enter the piping. Also, when storing the piping, securely seal the opening by
pinching, taping, etc. (Handling of R32 is similar to R410A.)
CAUTION
1. Installation (Space) · That the installation of pipe-work shall be kept to
a minimum. · Must ensure that pipe-work shall be protected from physical
damage. · That compliance with national gas regulations shall be observed. ·
Must ensure mechanical connections be accessible for maintenance purposes. ·
In cases that require mechanical ventilation, ventilation openings shall be
kept clear of obstruction. · When disposal of the product, do follow to the
precautions in #12 and comply with national regulations.
Always contact to local municipal offices for proper handling.
2. Servicing
2-1. Service personnel · Any qualified person who is involved with working on
or breaking into a refrigerant circuit should hold
a current valid certificate from an industry-accredited assessment authority,
which authorizes their competence to handle refrigerants safely in accordance
with an industry recognised assessment specification.
· Servicing shall only be performed as recommended by the equipment
manufacturer. Maintenance and repair requiring the assistance of other skilled
personnel shall be carried out under the supervision of the person competent
in the use of flammable refrigerants.
· Servicing shall be performed only as recommended by the manufacturer.
2-2. Work
· Prior to beginning work on systems containing flammable refrigerants, safety
checks are necessary to ensure that the risk of ignition is minimised. For
repair to the refrigerating system, #2-3 to #2-7 shall be completed prior to
conducting work on the system.
· Work shall be undertaken under a controlled procedure so as to minimise the
risk of a flammable gas or vapour being present while the work is being
performed.
2-3. General work area
· All maintenance staff and others working in the local area shall be
instructed on the nature of work being carried out.
· Work in confined spaces shall be avoided. · The area around the workspace
shall be sectioned off. · Ensure that the conditions within the area have been
made safe by control of flammable material.
2-4. Checking for presence of refrigerant
· The area shall be checked with an appropriate refrigerant detector prior to
and during work, to ensure the technician is aware of potentially toxic or
flammable atmospheres.
· Ensure that the leak detection equipment being used is suitable for use with
all applicable refrigerants, i.e. non-sparking, adequately sealed or
intrinsically safe.
2-5. Presence of fire extinguisher
· If any hot work is to be conducted on the refrigeration equipment or any
associated parts, appropriate fire extinguishing equipment shall be available
to hand.
· Have a dry powder or CO2 fire extinguisher adjacent to the charging area.
2-6. No ignition sources
· No person carrying out work in relation to a refrigeration system which
involves exposing any pipe work shall use any sources of ignition in such a
manner that it may lead to the risk of fire or explosion.
· All possible ignition sources, including cigarette smoking, should be kept
sufficiently far away from the site of installation, repairing, removing and
disposal, during which refrigerant can possibly be released to the surrounding
space.
· Prior to work taking place, the area around the equipment is to be surveyed
to make sure that there are no flammable hazards or ignition risks.
· “No Smoking” signs shall be displayed.
2-7.Ventilated area
· Ensure that the area is in the open or that it is adequately ventilated
before breaking into the system or conducting any hot work.
· A degree of ventilation shall continue during the period that the work is
carried out. · The ventilation should safely disperse any released refrigerant
and preferably expel it externally into
the atmosphere.
2-8. Checks to the refrigeration equipment
· Where electrical components are being changed, they shall be fit for the
purpose and to the correct specification.
· At all times the manufacturer’s maintenance and service guidelines shall be
followed. · If in doubt, consult the manufacturer’s technical department for
assistance.
– The charge size is in accordance with the room size within which the
refrigerant containing parts are installed;
– The ventilation machinery and outlets are operating adequately and are not
obstructed; – Marking to the equipment continues to be visible and legible.
Markings and signs that are illegible
shall be corrected; – Refrigeration pipe or components are installed in a
position where they are unlikely to be exposed
to any substance which may corrode refrigerant containing components, unless
the components are constructed of materials which are inherently resistant to
being corroded or are suitably protected against being so corroded.
2-9. Checks to electrical devices
· Repair and maintenance to electrical components shall include initial safety
checks and component inspection procedures.
· If a fault exists that could compromise safety, then no electrical supply
shall be connected to the circuit until it is satisfactorily dealt with.
· If the fault cannot be corrected immediately but it is necessary to continue
operation, an adequate temporary solution shall be used.
· This shall be reported to the owner of the equipment so all parties are
advised. · Initial safety checks shall include:
– That no live electrical components and wiring are exposed while charging,
recovering or purging the system;
– That there is continuity of earth bonding.
3. Repairs to sealed components · During repairs to sealed components, all
electrical supplies shall be disconnected from the
equipment being worked upon prior to any removal of sealed covers, etc. ·
Particular attention shall be paid to the following to ensure that by working
on electrical components,
the casing is not altered in such a way that the level of protection is
affected. This shall include damage to cables, excessive number of
connections, terminals not made to original specification, damage to seals,
incorrect fitting of glands, etc. · Ensure that apparatus is mounted securely.
· Ensure that seals or sealing materials have not degraded to the point that
they no longer serve the purpose of preventing the ingress of flammable
atmospheres. · Replacement parts shall be in accordance with the
manufacturer’s specifications.
NOTE: The use of silicon sealant can inhibit the effectiveness of some types
of leak detection equipment. Intrinsically safe components do not have to be
isolated prior to working on them.
4. Repair to intrinsically safe components · Do not apply any permanent
inductive or capacitance loads to the circuit without ensuring that this
will not exceed the permissible voltage and current permitted for the
equipment in use. · Intrinsically safe components are the only types that can
be worked on while live in the presence of
a flammable atmosphere. The test apparatus shall be at the correct rating. ·
Replace components only with parts specified by the manufacturer. · Other
parts may result in the ignition of refrigerant in the atmosphere from a leak.
5. Cabling · Check that cabling will not be subject to wear, corrosion,
excessive pressure, vibration, sharp
edges or any other adverse environmental effects. · The check shall also take
into account the effects of aging or continual vibration from sources
such as compressors or fans.
6. Detection of flammable refrigerants · Under no circumstances shall
potential sources of ignition be used in the searching for or detection
of refrigerant leaks. · A halide torch (or any other detector using a naked
flame) shall not be used.
7. Leak detection methods · Electronic leak detectors may be used to detect
refrigerant leaks but, in the case of flammable
refrigerants, the sensitivity may not be adequate, or may need re-calibration.
(Detection equipment shall be calibrated in a refrigerant-free area.)
Page 1
· Ensure that the detector is not a potential source of ignition and is
suitable for the refrigerant used. · Leak detection equipment shall be set at
a percentage of the LFL of the refrigerant and shall be calibrated
to the refrigerant employed, and the appropriate percentage of gas (25 %
maximum) is confirmed. · Leak detection fluids are suitable for use with most
refrigerants but the use of detergents containing
chlorine shall be avoided as the chlorine may react with the refrigerant and
corrode the copper pipe-work. · If a leak is suspected, all naked flames shall
be removed/extinguished. · If a leakage of refrigerant is found which requires
brazing, all of the refrigerant shall be recovered from the
system, or isolated (by means of shut off valves) in a part of the system
remote from the leak. For appliances containing flammable refrigerants, oxygen
free nitrogen (OFN) shall then be purged through the system both before and
during the brazing process.
8. Removal and evacuation · When breaking into the refrigerant circuit to
make repairs-or for any other purpose-conventional
procedures shall be used. However, it is important that best practice is
followed since flammability is a consideration.The following procedure shall
be adhered to: · remove refrigerant; · purge the circuit with inert gas; ·
evacuate; · purge again with inert gas; · open the circuit by cutting or
brazing. · The refrigerant charge shall be recovered into the correct recovery
cylinders. · The system shall be “flushed” with OFN to render the unit safe.
This process may need to be repeated several times. · Compressed air or oxygen
shall not be used for purging refrigerant systems. · Flushing shall be
achieved by breaking the vacuum in the system with OFN and continuing to fill
until the working pressure is achieved, then venting to atmosphere, and
finally pulling down to a vacuum. · This process shall be repeated until no
refrigerant is within the system. · When the final OFN charge is used, the
system shall be vented down to atmospheric pressure to enable work to take
place. · This operation is absolutely vital if brazing operations on the pipe-
work are to take place. · Ensure that the outlet for the vacuum pump is not
close to any ignition sources and that ventilation is available.
9. Charging procedures · In addition to conventional charging procedures, the
following requirements shall be followed.
– Ensure that contamination of different refrigerants does not occur when
using charging equipment.
– Hoses or lines shall be as short as possible to minimize the amount of
refrigerant contained in them.
– Cylinders shall be kept upright.
– Ensure that the refrigeration system is earthed prior to charging the system
with refrigerant.
– Label the system when charging is complete (if not already).
– Extreme care shall be taken not to over fill the refrigeration system. ·
Prior to recharging the system it shall be pressure tested with OFN (refer to
7). · The system shall be leak tested on completion of charging but prior to
commissioning. · A follow up leak test shall be carried out prior to leaving
the site. · Electrostatic charge may accumulate and create a hazardous
condition when charging and
discharging the refrigerant. To avoid fire or explosion, dissipate static
electricity during transfer by grounding and bonding containers and equipment
before charging/discharging.
10. Decommissioning · Before carrying out this procedure, it is essential
that the technician is completely familiar with the
equipment and all its detail. · It is recommended good practice that all
refrigerants are recovered safely. · Prior to the task being carried out, an
oil and refrigerant sample shall be taken in case analysis is
required prior to re-use of reclaimed refrigerant. · It is essential that
electrical power is available before the task is commenced.
a) Become familiar with the equipment and its operation.
b) Isolate system electrically.
c) Before attempting the procedure ensure that:
· mechanical handling equipment is available, if required, for handling
refrigerant cylinders;
· all personal protective equipment is available and being used correctly;
· the recovery process is supervised at all times by a competent person;
· recovery equipment and cylinders conform to the appropriate standards.
d) Pump down refrigerant system, if possible.
e) If a vacuum is not possible, make a manifold so that refrigerant can be
removed from various parts of the system.
f) Make sure that cylinder is situated on the scales before recovery takes
place.
g) Start the recovery machine and operate in accordance with manufacturer’s
instructions.
h) Do not overfill cylinders. (No more than 80 % volume liquid charge).
i) Do not exceed the maximum working pressure of the cylinder, even
temporarily.
j) When the cylinders have been filled correctly and the process completed,
make sure that the cylinders and the equipment are removed from site promptly
and all isolation valves on the equipment are closed off.
k) Recovered refrigerant shall not be charged into another refrigeration
system unless it has been cleaned and checked.
· Electrostatic charge may accumulate and create a hazardous condition when
charging or discharging the refrigerant. To avoid fire or explosion, dissipate
static electricity during transfer by grounding and bonding containers and
equipment before charging/discharging.
11. Labelling · Equipment shall be labelled stating that it has been de-
commissioned and emptied of refrigerant. · The label shall be dated and
signed. · Ensure that there are labels on the equipment stating the equipment
contains flammable refrigerant.
12. Recovery · When removing refrigerant from a system, either for servicing
or decommissioning, it is
recommended good practice that all refrigerants are removed safely. · When
transferring refrigerant into cylinders, ensure that only appropriate
refrigerant recovery
cylinders are employed. · Ensure that the correct number of cylinders for
holding the total system charge are available. · All cylinders to be used are
designated for the recovered refrigerant and labelled for that refrigerant
(i.e. special cylinders for the recovery of refrigerant). · Cylinders shall be
complete with pressure-relief valve and associated shut-off valves in good
working order. · Empty recovery cylinders are evacuated and, if possible,
cooled before recovery occurs. · The recovery equipment shall be in good
working order with a set of instructions concerning the
equipment that is at hand and shall be suitable for the recovery of all
appropriate refrigerants including, when applicable, flammable refrigerants. ·
In addition, a set of calibrated weighing scales shall be available and in
good working order. · Hoses shall be complete with leak-free disconnect
couplings and in good condition. · Before using the recovery machine, check
that it is in satisfactory working order, has been properly maintained and
that any associated electrical components are sealed to prevent ignition in
the event of a refrigerant release. Consult manufacturer if in doubt. · The
recovered refrigerant shall be returned to the refrigerant supplier in the
correct recovery cylinder, and the relevant waste transfer note arranged. · Do
not mix refrigerants in recovery units and especially not in cylinders. · If
compressors or compressor oils are to be removed, ensure that they have been
evacuated to an acceptable level to make certain that flammable refrigerant
does not remain within the lubricant. · The evacuation process shall be
carried out prior to returning the compressor to the suppliers. · Only
electric heating to the compressor body shall be employed to accelerate this
process. · When oil is drained from a system, it shall be carried out safely.
Explanation of symbols displayed on the indoor unit or outdoor unit.
WARNING
This symbol shows that this equipment uses a flammable refrigerant. If the refrigerant is leaked, together with an external ignition source, there is a possibility of ignition.
CAUTION This symbol shows that the Operating Instructions should be read carefully.
CAUTION CAUTION
This symbol shows that a service personnel should be handling this equipment
with reference to the Technical Manual.
This symbol shows that there is information included in the Operating
Instructions and/or Installation Instructions.
Check of Density Limit
The refrigerant (R32), which is used in the air conditioner, is a flammable
refrigerant. So the requirements for installation space of appliance are
determined according to the refrigerant charge amount (mc) used in the
appliance.
The minimum indoor floor space compared with the amount of refrigerant is roughly as follows: (Installation height: 2.5m).
*U-100PZ2E5,U-100PZ2E8 Can not be installed
mc 1.22
: Can be installed
1.22 < mc mmax : Installation possible with in
the range of slanted line part
mc > mmax
: Can not be installed
· 3.50 indicates mmax digit of the model U-100PZ2E5, U-100PZ2E8. · 3.88
indicates mmax digit of the model U-125PZ2E5, U-125PZ2E8 and U-140PZ2E5,
U-140PZ2E8.
mc : The refrigerant charge amount (Total of refrigerant at shipment and
refrigerant charge amount in the field). · Please calculate mc according to
piping length in the field as shown in the calculation example below.
mc = 1 + 2 = 1 + (3(45)) = 2.60 + (0.045 (40 m 30 m) = 3.05
1: Refrigerant charged at shipment 2: Refrigerant charge amount in the field 3: Additional charge per 1m
4: Total pipe length
5: Charge-less pipe length(max.)
· If the total piping length is within the maximum value of the charge-less
piping length, refrigerant charge in the field is unnecessary.
mmax : The maximum refrigerant charge amount
mmax
U-100PZ2E5, (8) 3.50
U-125PZ2E5, (8) U-140PZ2E5, (8)
3.88
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.
Part name
Q’ty
Diagram
Application
Part name
Q’ty Diagram
Application
Protective bushing
2
Banding strap
4
For protecting electrical wires For tying electrical wires together
Installation Instruction 1 Installation Instruction
SIZE:A3
CONNECTION FOR DEMAND AND FORCED STOP This manual
Please install according to WarningCaution on page1.
2. SELECT THE OUTDOOR UNIT INSTALLATION LOCATION
Warning
Be careful when picking up and moving the indoor and outdoor units. Get a partner to help, and bend your knees when lifting to reduce strain on your back. Sharp edges or thin aluminum fins on the air conditioner can cut your fingers.
1. Install the unit once you have checked that the installation location matches the following conditions.
A location with sufficient ventilation.
Possibly a location that is sheltered from rain or direct sunlight and is well-ventilated so that hot and cool air does not build up.
A location where the area around the discharge is not exposed to animals or plants which could adversely affect the release of hot or cool air from the unit.
A location where the discharge and operation noise will not be a nuisance to the neighbours.
A location that can support the product’s weight or vibrations and secured for horizontal installation wherever possible.
A location that does not obstruct the air discharge or intake.
A location where there is no danger of flammable or corrosive gas leaks.
A location that provides space for installation and service.
A location that allows the pipe and cable length fixture for internal and external connections.
It may need two or more people to carry out the installation work.
2. Refer to the diagram below for the installation location which is exposed to strong wind.
If a strong wind of more than 5 m/sec blows to the area directly in front of the discharge, the outdoor unit’s air flow is reduced and the outflow may re- enter (short circuit) causing the following outcome:
“Reduced capacity”, “Increased frost formation during heating” or “Operation stopped due to increased pressure”.
Should an exceptionally strong wind blow to the area directly in front of the discharge of the outdoor unit; there is the risk of damage due to the fan’s high-speed reverse rotation.
If the direction of the prevailing wind is known when operating the unit, place the unit at an appropriate angle to the wind’s direction so that the discharge faces towards a building
or a wall.
Air Intake
Wall / Standing outer wall
Strong wind
Air discharge
Strong wind
Intake side
Selecting the location for installation and service.
3. If installing at locations prone to snowfall, install the unit as high as
possible with suitable roofing which shelters the unit from snow. 4. Avoid
installing the unit in locations where there are petroleum products (such as
machine oil), saline content (such as coastal areas), sulphurous gas and where
high frequency noise is generated. 5. Place the indoor and outdoor unit, power
cords and indoor/outdoor unit connection cables at a minimum distance of 1
meter or more away from televisions
and radios. This is to avoid interference to picture and/or sound. (However,
depending on the electromagnetic waves, noise interference may still occur
even with the 1 meter separation.) 6. For restaurants and kitchens, avoid
installing at locations which draws oil and steam. Plastic parts can
deteriorate from droplets of oil and steam or it can cause falling parts or
water leakage. 7. Avoid installing at the location where cutting oil mist or
iron powder is present. 8. If there is an immense voltage fluctuation due to
the location’s problem, ensure to split the power supply. 9. When installing
the product in a place where it will be affected by typhoon or strong wind
such as wind blowing between buildings, including the rooftop of a building
and a place where there is no building in surroundings, fix the product with
an overturn prevention wire, etc. 10. Ensure to assign several people or use a
mechanical lift, etc. to transport the unit.
3. SELECTING THE LOCATION FOR INSTALLATION SERVICE
Please secure necessary space to guarantee performance and service & maintenance.
For multiple installations, please secure enough space to enable removal of side face screws between units. (unit:mm)
(A) If there are obstacles at the intake
If the upper part is open 1 For separate installation location
· Only if there are obstacles at the intake
· If there are obstacles on both sides
thMaonre100
thanM5o0re0
thanM2o5re0
thMaonre100
If there are obstacles above the unit 1 For separate installation location
· Only if there are obstacles at the intake
Less than 500
· If there are obstacles on the intake and the other side
Less50th0an
More than 1000
More than 1000
More10th0an
thanM5o0re0
More20th0an thanM2o5re0
2 For multiple units (more than 2 units) · If there are obstacles on both
sides
M1o0r0e0than
More than 250
thanM2o5re0
More30th0an
2 For multiple units (more than 2 units) · If there are obstacles on both sides
M1o0r0e0than
Less50th0an
More than 1000
More than 250
More40th0an M2o5re0 than
(B) If there are obstacles at the discharge If the upper part is open
1 For separate installation location
2 For multiple units (more than 2 units)
If there are obstacles above the unit
More than 500
1 For separate installation location Less than 500
More than 150
More than 1000
2 For multiple units (more than 2 units)
Less than 500
More than 1000
More than 1000
(C) If there are obstacles on both the intake and discharge
More than 500
Pattern 1 If there is an obstacle that is higher than the unit on the intake side. (There is no limit to the height of the obstacle above the discharge.)
If the upper part is open
1 For separate installation location
More50th0an
More10th0an
More than 150
More than 1000
2 For multiple units (more than 2 units)
Mor1e0t0h0an
More30th0an
If there are obstacles above the unit 1 For separate installation location
· The dimensions for H, A and L are shown in the following table.
L H H < L
L
A
0 < L 1/2 H
500
1/2H < L H
750
Install a pedestal or mount so that L H
· Cover the bottom part of the pedestal or mount so that air does not go through it.
Less than 500
2 For multiple units (up to 2 units) · The dimensions for H, A and L are shown in the following table.
L H H < L
L
A
0 < L 1/2 H
1000
1/2H < L H
1250
Install a pedestal or mount so that L H
· Cover the bottom part of the pedestal or mount so that air does not bypass it. · A limit of only 2 units can be installed.
Less than 500
More than 1000
More than 1000
More than 200
More than 400
Pattern 2 If there is an obstacle that is higher than the unit on the discharge side. (There is no limit to the height of the obstacle above the discharge.)
If the upper part is open 1 For separate installation location
2 For multiple units (more than 2 units)
thMaonre500
thMaonre100
Mor1e0t0h0an
More30th0an
If there are obstacles above the unit 1 For separate installation location
· The dimensions for H, A and L are shown in the following table.
L H H < L
A 100 Install a pedestal or mount so that L H
· Cover the bottom part of the pedestal or mount so that air does not go through it.
Less than 500
2 For multiple units (up to 2 units) · The dimensions for H, A and L are shown in the following table.
L H H < L
A 400 Install a pedestal or mount so that L H
· Cover the bottom part of the pedestal or mount so that air does not bypass it. · A limit of only 2 units can be installed.
Less than 500
400 More than 1000
1000
More than
More30th0an
thMaonre500
(D) Stacking installation setup · Stack up to 2 tiers. · A dimension of approximately 400 mm is required for the second tier outdoor unit’s drain pipe and space for maintenance of the first tier outdoor unit. · Close A section (the space between the upper and lower level outdoor units) so the outtake air does not bypass it.
1 If there are obstacles at the discharge
2 If there are obstacles at the intake
400
A section
Mor1e0t0h0an
(E) For multiple row installation (on the roof, etc.) 1 For one row installation setup
A section
More than 200
2 For multiple units (more than 2 units)
thMaonre500
Mor1e5t0h0an thMaonre300
thMaonre100
· The dimensions for H, A and L are shown in the following table.
L H H < L
A 300 Installation not possible
· The above mentioned distance is required for optimal unit performance. Allow as much space as possible in order to obtain the best performance from the units.
Mor1e0t0h0an
Mor2e0t0h0an thMaonre400
4. TRANSPORT AND INSTALL THE OUTDOOR UNIT
Transporting
1. Transport the outdoor unit in its original packaging as close as possible to the installation location.
2. In the event that the unit needs to be lifted or suspended, use a rope or belt and use cloth or wood as padding to avoid damaging the unit.
3. Use the side handles to carry the unit and be careful not to touch the fan with your hand or any objects.
Installation
1. Read the “Select the outdoor unit installation location” thoroughly before installing the outdoor unit.
2. When installing to a concrete or solid surface, use M10 or a W 3/8 bolts and nuts to secure the unit. Ensure that it installed upright on a horizontal
plane. (Use an anchor bolt for the installation as shown in the diagram below.)
3. Avoid installing on the slanted roof.
4. In the even where the roof is at risk of receiving oscillations or vibrations, secure the unit with a seismic isolating mount or vibration absorbing
rubber.
5. The drain water will be discharged from the unit during heating or defrosting operation mode.
230 200 160 350
17
195.5
Select an appropriate location with good drainage system. (In the winter, there
is risk of slipping due to freezing, and depending on the installation set up there
is risk of drain water running overhead.)
(Anchor pitch)
412.5
355.5
Please consult us if installing drain elbows.
20.5
In cold regions (where the outdoor temperature can drop to below 0° for 2 to 3
consecutive days), the drain water may freeze and may prevent the fan from
operating. For this case, do not use the drain elbow.
5. REFRIGERANT INSTALLATION
159
660
159
(Anchor pitch)
Drain hole ø32
Anchor bolt position
More than 25mm
More than 40mm
Base Anchor bolt length
More than 50mm
For indoor unit refrigerant piping installation, refer to the installation
instruction manual that comes with that indoor unit. Do not reuse existing
piping, install new piping.
1. Precautions during refrigerant installation. Use clean pipes with no dust
inside. The pipe may corrode with the presence of fluorine dust which will
adversely affect the refrigerant piping system due to deterioration of the
refrigerant oil, etc. This unit is specifically for R32. Ensure to adhere to
the following items and install accordingly: · Use pipe cutters and flaring
tools which are specially designed for use with R32. · When connecting with
flaring tools, coat the flare section with ether-based oil. · Ensure to use
flare nuts supplied with the unit when connecting this unit. · Only for
storing or for open pipes. · Set the lower limit of the allowable pipe length
to 5m. If the pipe is shorter than 5m, the refrigerant may become overfilled
and a problem such as abnormal high pressure could occur. · Carefully handle
the liquid refrigerant, as it may cause a frostbite. · Do not release
refrigerants during the piping works for installing, re-installing and
repairing refrigeration parts.
2. The local pipes can protrude from any four directions. Make holes in the pipe panel for the pipes to penetrate it and lay the pipes accordingly. · It is recommended to apply additional substance to the cut area for anti-rust protection. Ensure to install pipe panels to prevent rain water from getting into the unit. Close the gap at the pipe connected area with putty or heat insulator (locally supplied). · If an insect or small animal enters the outdoor unit, there is the risk of shorting in the product electronic casing. [Remove the front panel] (1) Remove the 2 mounting screws. (2) Slide the front panel using your hands downwards to release the pawls. Then remove by pulling the panel towards you.
Specification for pipe connecting indoor unit to outdoor unit.
Maximum pipe length
Height difference
Outdoor located higher installation Outdoor located lower installation
Charge-less pipe length
Additional charge per 1 m
Refrigerant charged at shipment
Total refrigerant amount
U-100
2.60 3.50
U-125/140 50m 30m 15m 5-30m
45 /m
2.98
3.88
Precautions when operating the 3-way valve for piping installation
Do not open the 3-way valve until the piping installation is completed. · It
is closed during shipment. · During installation the side panel may warp if
only the flare nut is loosened and tightened with a torque wrench.
As a result, always be sure to secure to the hexagonal part of the 3-way valve
with a spanner, or other tool. Refer to the following table for the tightening
torque of the 3-way valve flare nuts. · If the nuts are over tightened, they
may cause the flares to break or leak. Do not add additional force to the
valve’s cover. · Using spanners on the cover or valve itself (other than the
hexagonal parts) may cause gas leakage.
Avoid using spanners on the cover or parts other than the hexagonal part of
the valve.
Front panel
Rear direction
Rear piping panel
Front direction
Mounting screws for the front panel
Downward direction
Sideways direction
Front piping panel
Piping
Putty or heat insulator (locally
supplied)
Prevention measures to avoid small animals from entering
Valve shaft Valve cap
Spanner (Secure)
Flare nut Gas side
Valve shaft Valve cap
Service port
Hexagonal part of the valve
Torque wrench
Service port
Flare nut
Torque wrench
Liquid side
(Please use a single, open-end spanner to loosen and tighten the liquid side
3-way valve flare nut.)
Ensure to do the re-flaring of pipes before connecting to units to avoid
leaking.
To prevent the ingress of moisture into the joint which could have the
potential to freeze and then cause leakage, the joint must be sealed with
suitable silicone and insulation material. The joint should be sealed on both
liquid and gas side.
[3-way valve operation method] · Use an Allen wrench (Size 4 mm or 6 mm).
Direction to open
Insulation material and silicone sealant. Please ensure there are no gaps
where moisture can enter the joint.
Silicone Sealant must be neutral cure and ammonia free. Use of silicon
containing ammonia can lead to stress corrosion on the joint and cause
leakage.
Opening : Open the cover and turn the Allen wrench counter-clockwise until it stops. Closing : Open the cover and turn the Allen wrench clockwise until it stops.
Precautions for handling the valve cap
Ensure not to scratch the inner surface of the valve or the end of the valve
shaft. · Once adjustments to the valve are completed, ensure to tighten the
valve cap according to the prescribed torque.
Precautions for handling the service ports
Use a push-rod with a charge hose. · Once adjustments to the valve are
completed, ensure to tighten the valve cap according to the prescribed torque.
Precautions for connecting the pipes
For proper connection, align the union and flare straight with each other.
Ensure that the pipes do not come into contact with the compressor’s bolts or
exterior panel. There is a risk of condensation from the 3-way valve coming
out between the insulation material and the indoor unit’s piping when you
install the outdoor unit above then the indoor unit. Ensure to caulk the
connection parts.
Precautions for insulation installation
Maximum temperature limit of gas or liquid piping exceeds 120 °C
In high humidity environment, reinforce the insulation material for the refrigerant piping. Failure to do so may result in condensation on the surface of the insulation material. Use materials with good heat-resistant properties as the heat insulator for the pipes. Ensure to insulate both the gas side and liquid side pipes. If the pipes are not adequately insulated, condensation and water leakages may occur. Ensure that the current insulation covers the pipes up to the unit’s connecting part. If the piping is exposed, it may cause condensation or burn (when touch the pipe).
ø9.52 (Liquid side)
ø15.88 (Gas side)
Service port
Tightening torque (approx.) 20.6N·m~28.4N·m
(206 f·cm~284 f·cm)
48.0N·m~59.8N·m (480 f·cm~598 f·cm)
10.7N·m~14.7N·m (107 f·cm~147 f·cm)
Piping
Caulking treatment, etc.
Insulation material
90° ± 2°
45° ±1°
R32
Precautions for flare nut installation Dimensions when adding flare nuts and the tightening torque
Piping size ø 6.35 ø 9.52 ø 12.7 ø 15.88
Tightening torque (approx.)
14.0 N·m~18.0 N·m (140 f·cm~180 f·cm)
34.0 N·m~42.0 N·m (340 f·cm~420 f·cm)
49.0 N·m~55.0 N·m (490 f·cm~550 f·cm)
68.0 N·m~82.0 N·m (680 f·cm~820 f·cm)
Flare section dimensions A 8.7 ~ 9.1 mm
12.8 ~ 13.2 mm 16.2 ~ 16.6 mm 19.3 ~ 19.7 mm
After piping connection has completed, ensure there is no gas leakage.
When tightening the flare nut, coat the flares (inner surface only) with
refrigerant oil on the flares Firstly, screw in 3-4 turns by hand.
Ensure not to get oil on the screw part. Refrigerant oil used is ether-based.
Once the piping connections are completed, perform leakage inspection using
nitrogen gas. When flared joints are reused, the flare part shall be re-
fabricated.
Flare configuration Application for ether-based oil
6. LEAK TEST AND EVACUATION
Leak Tightness Test Method
Keep 3-way valve fully closed and pressurize through three-way valve service
port. Do not pressurize to the default value at once. Pressurize gradually. 1
Pressurize to 0.5MPa (5 f/cm²G) and then leave it for 5 minutes to ensure that
the pressure does not drop. 2 Pressurize to 1.5MPa (15 f/cm²G) and leave it
for 5 minutes to ensure that the pressure does not drop. 3 For the test,
pressurize to 4.15MPa and leave it for about 1 day to ensure that the pressure
does not drop.
EVACUATION
Use a vacuum pump (with back-flow prevention device) to vacuum through the
3-way valve service port to achieve the pressure below -101kPa (5 Torr). Air
and moisture remaining in the refrigerant system due to poor vacuum drying can
cause performance decrement and malfunction of the compressor.
7. REGARDING REFRIGERANT FILLING
Use nitrogen gas for the leak tightness test. Using flammable gas can cause an explosion.
Pressure meter
Outdoor unit
3-way valve
Nitrogen
Refrigerant meter
Vacuum pump
Indoor unit
Precautions during refrigerant filling
Ensure to fill only with liquid refrigerant when refilling.
If gas refrigerant is filled, the refrigerant composition will not be balanced and will cause
abnormal operation.
Liquid refrigerant
If using cylinders as shown in the bottom left diagram; without a siphon tube inside, turn it upside down and use it. (It is recommended to use the manifold with the side glass.)
Gas refrigerant
Liquid refrigerant
Cylinder with a siphon tube
Siphon tube
Use tools that are designed specifically for R32, for pressure resistance and to prevent mixing impurities.
Not possible Cylinder
Possible Cylinder
Fill the refrigerant from the 3-way valve’s service port on the liquid-side.
For filling and replacing all refrigerant (For refilling due to a leak)
For refilling refrigerant, first collect all residual refrigerant and after vacuum dehydration using the vacuum pump. Refill the refrigerant according to the prescribed amount stated on the placard affixed to this unit.
Precautions after the pipes’ connection have completed
Ensure to open the 3-way valve after completing the piping installation, leak test and vacuuming. If it is closed during operation, it can lead to compressor failure.
Charging with refrigerant
At the time of shipment from the factory, this unit is charged with enough
refrigerant for an equivalent pipe length of 30m. If the equivalent pipe
length used will be 30m or less, no additional charging will be necessary. If
the equivalent pipe length will be between 30 and 50m, charge with additional
refrigerant according to the equivalent length given in the table below.
For standard type
U-100/125/140P
Additional charging amount 45 /m
Equivalent length 50m
Minimum length 5m
Pump down operation Please refer to “10. PRECAUTIONS REGARDING TEST RUN (Caution for Pump Down)” of this Installation instruction manual. It is also indicated on the label affixed to the outdoor unit.
8. ELECTRICAL WIRING
This air conditioner must be installed in accordance with national wiring regulations.
Cables connected to outdoor unit must be approved polychloroprene sheathed type 60245 IEC 57 or H05RN-F/H07RN-F or heavier.
Warning
The units must be connected to the supply cables for fixed wiring by qualified
technician. Circuit breaker must be incorporated in the fixed wiring in
accordance with the national wiring regulations. The circuit breaker must be
approved, suitable for the voltage and current ratings of equipment and have a
contact separation by 3mm in all poles. When the supply cable is damaged, it
must be replaced by qualified technician.
Be sure to install a current leakage breaker, main switch and fuse to the main
power supply, otherwise electric shocks may result.
Be sure to connect the unit to secure earth connection. If the earthing work is not carried out properly, electric shocks may result.
Wiring shall be connected securely by 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.
Ensure to connect the electrical cable connections and clamp the wires securely to the terminal connections using cord clamps so that no undue force is placed on the wires (power source cable, indoor/outdoor connection cables, earth lead wire). Do not install a phase advance capacitor for power factor improvement. (It does not improve the power factor and will cause abnormal overheating.) Do not bind the excess cables together and place them inside this unit. Protect the electrical cable with the protective bushing provided so that the cables do no get damaged on the knock hole or etched portions. If there is space between the electrical cables and the protective bushing occurs, seal it accordingly. Tie the cables with the provided binding strap so that they do not touch the compressor and the pipes. When setting up the cables, inside of unit install properly so that the front panel will not lift up. Make sure that front panel mount correctly. Use a round type terminal with an insulation sleeve for connecting to the terminal block. Use the appropriate screwdriver for tightening the terminal screws. Small sized screwdriver damages the head of the screw and cannot tighten it properly. There is risk of damaging the screw if the terminal screw is over tightened. Tighten with the appropriate torque.
Earth terminal fixing for functional earthing (for the shielded cable)
Cord clamp
Forced stop connection terminal block
Demand connection terminal block
Subsystem connection terminal block
Indoor/outdoor connection terminal block
Power supply terminal block
Insulate the terminal portion (earth included) with insulation sleeves.
Carry out wiring so that wires are not stretched.
Shielded cable option control (when carrying out demand, forced stop and subsystem connection only).
Cord clamp
Earth terminal Earth lead wire
Power line
Screw diameter name M4 M5
Tightening torque N·m( f·cm) 1.57~1.96 (16~20) 1.96~2.45 (20~25)
Direction to pull out wires
Earth lead wire set up
Back direction
Front direction
Sideways direction
Seal wiring holes after wiring using included protection bush. (other holes are for connecting conduit pipe)
The earth lead wire shall be longer than other lead wires as shown in the figure for electrical safety in case it slips out of the cord from the anchorage.
Be sure to connect the wires correctly to terminal board with connecting the crimp type ring terminal to the wires. If connecting two separate wires to a single crimped terminal, place the two crimped terminal wires together as shown in Fig. A. (If the arrangement shown in Fig. B is used, poor contacts or contact damage may result.)
Cord clamp
Indoor/outdoor connection (shielded cable)
Correct
Incorrect
Please fix all electrical lines firmly with cord clamps.
Thermal insulating piping materials
Please tie the insulation piping securely so that no electrical lines do come
into contact with the compressor or exposed piping. Standard accessories:
tying bands (4)
Indoor/outdoor, 2-wire mode format, option connection
(demand, forced stop and subsystem connections only).
Fig. A (OK)
Fig. B (not OK)
OUTDOOR UNIT/3-PHASE MODEL
OUTDOOR UNIT/SINGLE-PHASE MODEL
Power supply (220-230-240V~)
Power supply (380-400-415V 3N~)
Power supply (220-230-240V~)
Power supply (220-230-240V~)
Circuit breaker protective Switch
earth
Circuit breaker Switch
Circuit breaker
protective earth
Switch
Circuit breaker Switch
Control cable
protective earth
Control cable
protective earth
Indoor unit
Wired remote controller
Outdoor unit
This equipment complies with EN/IEC 61000-3-12 provided that the short-circuit power Ssc is greater than or equals to 2 kVA 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 supply with a short-circuit power Ssc greater than or equals to 2 kVA.
Ssc : Short circuit power
: functional earthing (for the shielded cable)
Indoor unit
Wired remote controller
Outdoor unit
Model name U-100PZ2E5
Power supply 220-230-240V~
Time delay fuse or circuit capacity
30A
1 Control cable
0.75mm²
2 Ssc
4750kVA
U-125PZ2E5
220-230-240V~
35A
U-140PZ2E5
220-230-240V~
40A
U-100PZ2E8 380-400-415V 3N~
15A
0.75mm² 0.75mm² 0.75mm²
5500kVA 5650kVA
3
U-125PZ2E8 380-400-415V 3N~
15A
0.75mm²
3
U-140PZ2E8 380-400-415V 3N~
15A
0.75mm²
3
1 Use a shielded cable for the control cable. Overall extension less than 500m
3 Intended for professional use. Permission from the power supplier is
required when installing the
U-100PZ2E8, U-125PZ2E8, U-140PZ2E8 outdoor units that are connected to a 16 A
distribution network.
Valve cap (Valve size) TWIN
The product meets the technical requirements of EN/IEC 61000-3-3. Decide the length and size of the power supply cable based on the maximum ampere tabulated above in accordance with the national wiring regulations. Select the fuse(s) and/or circuit breaker(s) from the types and ratings suitable for the maximum ampere tabulated above in accordance with the national wiring regulations. If capacity of power supply circuit and enforcement are not enough, it can causes the electric shock and a fire.
For the shield part of the shielded cable, twist the end out, crimp it with a round terminal, and connect it to the functional earthing screw. After crimping it with a round terminal, wrap it with insulating tape so there are no spaces and adjust it so the shield part does not touch any live parts.
Crimp the round terminal
Page 2
Be sure that the shield part of the shielded cable does not touch the terminal block or any live parts. Caution Failure to do so may lead to electric shock or fire.
Shield part
Wrap it well with insulating tape so there are no spaces.
9. TWIN TYPE CONNECTIONS
This unit cannot make triple or double twin connections. Two indoor units can
be operated simultaneously with a single remote control unit. Note that
individual operation is not possible. Master unit and slave unit can be set
automatically in twin system. No address setting is necessary. Applicable
“TWIN” combination table.
Outdoor unit combination
100 Type U-100
S-50 S-50
125 Type U-125
S-60 S-60
140 Type U-140
S-71 S-71
Piping Connections
The following table shows the pipe diameter. (Branch pipe kit should be used)
Outdoor unit main pipe diameter (mm) Liquid side : ø9.52
Gas side : ø15.88 Branch pipe kit (option)
Branch pipe diameter
Liquid side Gas side TWIN
S-50
Indoor unit combination S-60
ø6.35
ø9.52
ø12.7
ø15.88
CZ-P155BK1
S-71 ø9.52 ø15.88
The following table shows the equivalent pipe lengths and height differences.
Total pipe length Maximum branch pipe length
Maximum branch pipe length difference
Height difference
Outdoor located higher installation Outdoor located lower installation
Height difference between indoor units
SYMBOLS TWIN L+La+Lb La or Lb La > Lb La – Lb H1 H1 H2
SPEC Less than 50m Less than 15m
Less than 10m
Less than 30m Less than 15m Less than 0.5m
· Use the main pipe to gain any rise or fall required for the pipes. · The number of bends should be 8 or less in a single system, and 15 or less overall. · Branch pipes should be positioned horizontally.
Indoor unit
Indoor unit
Outdoor unit
Branch pipe
Main pipe (TWIN type)
Refrigerant charging
For the twin connection, the amount of refrigerant required for pipe length
30m has been included in this unit at the factory. No additional charge is
required for the first 30m pipe length in the case of the twin connection. The
amount of included refrigerant for each model is listed on NAME PLATE. Make
additional charges by adding up pipe length in an order of main pipe (L)
branch pipe (La Lb wide diameter) and then selecting the amount of refrigerant
corresponding to the remaining (after 30m for twin connection) liquid side
pipe diameter and pipe length from the right table.
Liquid pipe diameter
ø6.35
ø9.52
Wiring
Power supply (220-230-240V~)
Power supply (220-230-240V~)
protective earth
protective earth
Power supply (220-230-240V~)
Circuit breaker Switch
Power supply (380-400-415V 3N~)
Circuit breaker Switch
Addition amount of refrigerant [ /m] 20
45
Control cable
Control cable
Indoor unit
Indoor unit
protective earth
Control cable
Outdoor unit
protective earth
Outdoor unit
: functional earthing (for the shielded cable)
10. PRECAUTIONS REGARDING TEST RUN
Check Before Test Run Power supply cable Indoor/outdoor connection wire Earth
wire
Refrigerant pipe
Content check
Is the wire set up and connected as described in the instructions? Check for
any phase sequence. Are the wire connection’s screws loose? Is the open and
close device / leakage breaker installed? Is the power supply cable’s
thickness and length appropriately measured as described in the instructions?
Is it earthed (grounded)? Check that the insulation resistant value is more
than 100M. Use the 500 V mega-testers to measure the insulation. Do not use
the mega-tester for any other circuit except for voltage of 220-230-240V~ or
380-400-415V 3N~. Are the wire connections for the indoor/outdoor units
connected as described in the instructions? Are there any looped wires? Was
the “N-phase” surely connected when connecting the power supply wire on the
three-phase model? If N-phase is not connected, only the fan may repeat
turning ON/OFF without the compressor operating. In that case, check if there
is any problem with N-phase connection.
Is the piping installed as described in the instructions? Are the pipes sizes
appropriate? Does the pipe’s length adhere to the specifications? Is the
branch pipe slant being appropriately done as described in the instructions?
Was vacuum removal sufficiently carried out? Was the leak tightness test
carried out with nitrogen gas? Use the testing pressure of 4.15 MPa. Is the
piping insulation material appropriately installed? (Insulation material is
necessary for both gas and liquid piping.) Is the 3-way valve for the liquid
side and gas side open?
Always be sure to use a properly insulated tool to operate the short-circuit pin on the circuit board. (Do not use your finger.) Never switch the power supply ON until the installation has completed. Supply electrical current through all indoor units and check the voltage. Supply electrical current through all the outdoor units and check each inter-phase voltage. Before the test run, ensure to check that the 3-way valve is open. Operating while the valve is closed causes the compressor to fail.
Test Run Procedure
If there are duplicated system addresses, or if the settings for the Nos. of
the indoor units are not consistent, an alarm will occur and the system will
not start. Switch the power supply ON both indoor and outdoor unit. Short-
circuit CHK pin on the outdoor main PCB. Do not remove CHK pin until test run
is completed. Removing CHK pin stops test run. Short-circuit RUN pin on the
outdoor main PCB for one second or longer. Factory setting is cooling
operation mode and cooling operation test run starts. If heating operation
starts, short-circuit both right side and centre of the MODE pin (centre and
COOL) continuously. Ensure to conduct a test run. In addition, be sure to run
the cooling operation test run for at least 20 minutes before starting the
heating operation test run. To conduct heating operation test run, short-
circuit left side and centre of the MODE pin (centre and HEAT) continuously.
Removing CHK pin’s and MODE pin’s short-circuit stops test run. For the test
run using remote control unit, please see installation instructions included
with the remote control unit.
CHK pin
RUN pin
MODE pin *MODE pin: factory setting is cooling operation mode.
RUN pin
Caution for Pump Down
Pump down means refrigerant gas in the system is returned to the outdoor
MODE pin
unit. Pump down is used when the unit is to be moved, or before servicing the refrigerant circuit.
*MODE pin: factory setting is cooling operation
How to perform Pump-Down (Refrigerant recovery) properly
(SINGLE-PHASE)
mode.
(3-PHASE)
1 Stop operation of the unit (cooling, heating etc.).
OUTDOOR MAIN PCB
2 Connect the pressure gauge to the service port of the gas wiring valve.
3 Short-circuit the PUMPDOWN pin on an outdoor unit control PCB (CR) for more than 1 second to release.
Pump-Down begins and the unit starts operating.
During Pump-Down, LED1 blinks and LED2 is lit on an outdoor unit control
PCB (CR). CHK blinks on the remote controller. 4 Fully close the liquid wiring valve 2-3 minutes later.
Note : In the case that inter-unit wiring is 30m or longer, you cannot pump- down. (lt may trigger the operation of the overload protection device.)
The Pump-Down will begin. 5 When the pressure gauge drops to 0.1-0.2MPa, close the gas wiring
In this case, perform pump-down with pump-down device.
valve tightly and short-circuit the PUMPDOWN pin for more than 1
Outdoor Unit Control PCB (CR)
second to release. That is the end of Pump-Down.
1 phase model
When running for more than 10 minutes, it stops even if the Pump-Down is not completed. Check the blocked state of the liquid side valve.
PUMPDOWN
lt also stops when the PUMPDOWN pin is short-circuited during the
operation.
LED1
CHK
For compressor protection, do not operate to the point where the unit wiring
LED2
A. ADD
side reaches negative pressure.
LED1 LED2
R.C. ADD
SW1 SW2 ON
TEST
STOP MODE
RUN
R.C. ADD ON
SW1 SW2 A. ADD CHK STOP
Outdoor Unit Control PCB (CR) 3 phase model
LED1 LED2
LED1 LED2
TEST
PUMPDOWN RUN
MODE
11. CHECKS AFTER INSTALLATION HAVE COMPLETED
Check the following items after completing installation. Is there a short
circuit with the intake air flow? Is the insulation secure? (Refrigerant
piping) Are there any errors with the wiring? Are the terminal screws loose?
Tightening torque (Unit: N·m { f·cm}) M4…1.57~1.96{16~20}, M5…1.96~2.45{20~25}
Is the drain water flowing smoothly? Is the insulation material properly
installed? Is the earth wire securely connected? Is the front panel and the
indoor unit air conditioner firmly fixed and was the installation completed
without any leakage from the refrigerant? Are the indoor and outdoor units
secured firmly installed with bolts at secured locations?
12. REGARDING DELIVERY TO THE CUSTOMER
Request the customer to review the operating instructions and explain the
operating method for the product. In addition, it is also recommended that
regular inspection checks are agreed upon for maintenance.
User inspection places
Serviceman inspection places
· Filter and grill cleaning · Exterior cleaning · Check the operating status · Clean the drain pan or things related to the water discharge · Heat exchanger cleaning
Refer to the installation instruction manual provided with the indoor unit for the specifications on the indoor unit installation.
ENGLISH The English text is the original instructions.
Other languages are translation of original instructions.
ACXF60-30041 1
PRINTED IN MALAYSIA