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PANASONIC U-100PZ2E8 (01) PDF SUMMARY:
What should be avoided when working with this refrigerant system?
Chlorine should be avoided because it may react with the refrigerant and corrode the copper pipe-work.
What should be done if a leak is suspected?
All naked flames shall be removed or extinguished.
If brazing is required after a refrigerant leak is found, what should be done?
All of the refrigerant shall be recovered from the system or isolated 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.
When breaking into the refrigerant circuit to make repairs, what procedures should be followed?
Conventional procedures should be used, but it is important that best practices are 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.
Where should the refrigerant be recovered into?
The refrigerant charge shall be recovered into the correct recovery cylinders.
What should the system be flushed with to render the unit safe?
The system shall be flushed with OFN to render the unit safe. This process may need to be repeated several times.
What should not be used for purging refrigerant systems?
Compressed air or oxygen shall not be used for purging refrigerant systems.
How should flushing be achieved?
Flushing should 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.
What should be done with the system when the final OFN charge is used?
When the final OFN charge is used, the system shall be vented down to atmospheric pressure to enable work to take place.
What is vital if brazing operations on the pipe-work are to take place?
This operation is absolutely vital if brazing operations on the pipe-work are to take place.
What should be ensured about the vacuum pump outlet?
Ensure that the outlet for the vacuum pump is not close to any ignition sources and that ventilation is available.
What additional requirements should be followed during 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.
What should be done prior to recharging the system?
Prior to recharging the system, it shall be pressure tested with OFN.
When should the system be leak tested?
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.
What safety precautions should be taken with static electricity when charging and discharging refrigerant?
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.
What is essential before decommissioning?
Before carrying out this procedure, it is essential that the technician is completely familiar with the equipment and all its details. It is recommended good practice that all refrigerants are recovered safely.
What samples should be taken prior to decommissioning?
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.
What is essential before commencing the decommissioning task?
It is essential that electrical power is available before the task is commenced.
What are the initial steps for decommissioning?
- Become familiar with the equipment and its operation.
- Isolate system electrically.
What should be ensured before attempting the decommissioning procedure?
- 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.
What are the steps for decommissioning after the initial steps?
- Pump down refrigerant system, if possible.
- If a vacuum is not possible, make a manifold so that refrigerant can be removed from various parts of the system.
- Make sure that cylinder is situated on the scales before recovery takes place.
- Start the recovery machine and operate in accordance with manufacturer’s instructions.
What are the precautions for filling cylinders during decommissioning?
Do not overfill cylinders, no more than 80% volume liquid charge. Do not exceed the maximum working pressure of the cylinder, even temporarily.
What should be done with the cylinders and equipment after the decommissioning process is completed?
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.
What should be done with recovered refrigerant before it is used in another refrigeration system?
Recovered refrigerant shall not be charged into another refrigeration system unless it has been cleaned and checked.
What should be done with equipment after it has been decommissioned and emptied of refrigerant?
Equipment shall be labeled stating that it has been de-commissioned and emptied of refrigerant. The label shall be dated and signed.
What should labels on the equipment state when it contains flammable refrigerant?
Ensure that there are labels on the equipment stating the equipment contains flammable refrigerant.
When removing refrigerant from a system, what is recommended?
When removing refrigerant from a system, either for servicing or decommissioning, it is recommended good practice that all refrigerants are removed safely.
What type of cylinders should be used when transferring refrigerant?
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.
What must the cylinders be designated and labeled for?
All cylinders to be used are designated for the recovered refrigerant and labeled for that refrigerant (i.e. special cylinders for the recovery of refrigerant).
What should cylinders be complete with?
Cylinders shall be complete with pressure-relief valve and associated shut-off valves in good working order.
What is the condition of empty recovery cylinders before recovery occurs?
Empty recovery cylinders are evacuated and, if possible, cooled before recovery occurs.
What condition should the recovery equipment be in?
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.
What additional equipment should be available and in good working order?
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.
What should be checked before using the recovery machine?
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.
What should be done with the recovered refrigerant?
The recovered refrigerant shall be returned to the refrigerant supplier in the correct recovery cylinder, and the relevant waste transfer note arranged.
What should not be mixed in recovery units and cylinders?
Do not mix refrigerants in recovery units and especially not in cylinders.
If compressors or compressor oils are to be removed, what should be ensured?
If compressors or compressor oils are to be removed, ensure that they have been evacuated.
What should not be used to accelerate defrosting or to clean, other than what is recommended by the manufacturer?
Do not use means to accelerate the defrosting process or to clean, other than those recommended by the manufacturer.
Where should the appliance be stored?
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).
What should not be done to the appliance?
Do not pierce or burn.
What should you be aware of regarding refrigerants?
Be aware that refrigerants may not contain an odor.
What is required of the room in which the appliance is installed, operated, and stored?
Appliance shall be installed, operated, and stored in a room with a floor area larger than (Amin) m2.
What should be ensured about the construction of an unventilated area where the appliance using flammable refrigerants is installed?
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.
Where should the appliance be stored regarding ventilation and room size?
The appliance shall be stored in a well-ventilated area where the room size corresponds to the room area as specified for operation.
Where should the appliance be stored regarding ignition sources?
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).
What should you not do on the unit that might cause you to fall down?
Do not sit or step on the unit, you may fall down accidentally.
Where should you not install the outdoor unit?
Do not install outdoor unit near handrail of veranda.
What danger exists when installing an air-conditioner unit on the veranda of a high-rise building?
When installing an air-conditioner unit on the veranda of a high rise building, child may climb up to outdoor unit and cross over the handrail causing an accident.
What should you not insert into the fan case?
Do not insert your fingers or other objects into the FAN CASE, you may be injured and the unit may be damaged.
What should you not mix during piping work?
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.
What should not be added or replaced other than the specified type?
Do not add or replace refrigerant other than specified type. It may cause product damage, burst and injury etc.
Who should clean the inside of the indoor and outdoor units?
Do not clean inside the indoor and outdoor units by users. Engage authorized dealer or specialist for cleaning.
In case of a malfunction, what should you not do?
In case of malfunction of this appliance, do not repair by yourself. Contact to the sales dealer or service dealer for a repair.
What type of parts must be used?
Must not use other parts except original optional parts described in catalogue and manual.
How should the appliance be stored to prevent mechanical damage?
The appliance shall be stored so as to prevent mechanical damage from occurring.
What should be kept away from small children?
Keep plastic bag (packaging material) away from small children, it may cling to nose and mouth and prevent breathing.
Who should install the appliance?
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.
What can imperfection in installation lead to?
Imperfection in installation caused by that having been carried out by the customer himself may lead to water leakage, electric shock, fire, etc.
How should the installation work be carried out?
Carry out the installation work with reliability according to this manual for installation work.
What can insufficient strength lead to?
Insufficient strength leads to injury due to falling of the unit.
What should be done when installing in preparation for strong wind?
Carry out predetermined installation work in preparation for strong wind such as typhoon, earthquake.
What may imperfection in installation work lead to?
Imperfection in installation work may lead to accidents arising from overturn, etc.
What measures should be taken when installing inside a small room?
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.
What advice should you get from the place of purchase?
Please discuss with the place of purchase for advice on what measures may be necessary to prevent critical concentrations being exceeded.
What is the danger if refrigerant leaks and reaches critical concentration levels?
If the refrigerant leaks and reaches critical concentration levels, there is the danger that death from suffocation may result.
What precautions should be taken when picking up and moving the indoor and outdoor units?
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.
What can sharp edges or thin aluminum fins on the air conditioner do?
Sharp edges or thin aluminum fins on the air conditioner can cut your fingers.
Who should install or service this product?
THIS PRODUCT MUST ONLY BE INSTALLED OR SERVICED BY QUALIFIED PERSONNEL.
What should you refer to before the installation, maintenance, and/or service of this product?
Refer to Commonwealth, State, Territory and local legislation, regulations, codes, installation & operating instructions, before the installation, maintenance and/or service of this product.
What caution items should you refer to for the installation of the refrigerant piping and what should you maintain strict control concerning?
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.
What should you check the catalog for when connecting the indoor unit?
The indoor unit to be connected must be R32 compatible and be sure to check the catalog, etc. for available models.
What may happen if the product is connected to other indoor units?
The product may not operation properly if connected to other indoor units.
What should you refer to for indoor unit installation?
Refer to the indoor unit installation instruction manual for the indoor unit installation.
What should you ensure to do with this installation instruction manual?
Ensure to hand over this installation instruction manual to the person performing the installation and inform the customer to keep it properly stored.
What should you do before carrying out installation work?
Carry out installation work with reliability after thorough reading of this “Precaution in terms of safety”.
What are the precautions shown here differentiated between?
Precautions shown here are differentiated between and .
What does the symbol with a white background denote?
Symbol with white background denotes item that is PROHIBITED.
What does the symbol with a dark background denote?
Symbol with dark background denotes item that must be carried out.
What should be done after installation work has been completed?
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.
What are the basic installation work procedures similar to?
The basic installation work procedures are the same as conventional refrigerant (R410A, R22) models.
What should you pay careful attention to regarding the refrigerant?
However, pay careful attention to the following points:
- 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 vapor being present while the work is being performed.
Who should be instructed on the nature of the work being carried out?
All maintenance staff and others working in the local area shall be instructed on the nature of work being carried out.
What should be avoided when working in confined spaces?
Work in confined spaces shall be avoided.
What should be done with the area around the workspace?
The area around the workspace shall be sectioned off.
What should be ensured about the conditions within the work area?
Ensure that the conditions within the area have been made safe by control of flammable material.
What should the area be checked for before and during work?
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.
What should be ensured about the leak detection equipment being used?
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.
If any hot work is to be conducted on the refrigeration equipment, what equipment shall be available?
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.
What should not be used when working on a refrigeration system that involves exposing any pipework?
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.
What should be kept away from the site during installation, repairing, removing, and disposal?
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.
What should be surveyed prior to work taking place?
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.
What type of signs shall be displayed?
“No Smoking” signs shall be displayed.
What should be ensured about the work area before breaking into the system or conducting any hot work?
Ensure that the area is in the open or that it is adequately ventilated before breaking into the system or conducting any hot work.
What should continue during the period that the work is carried out?
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.
Where electrical components are being changed, what should they be fit for?
Where electrical components are being changed, they shall be fit for the purpose and to the correct specification.
What guidelines shall be followed at all times?
At all times the manufacturer’s maintenance and service guidelines shall be followed. If in doubt, consult the manufacturer’s technical department for assistance.
What should be checked regarding the charge size, ventilation, markings, and pipework?
- 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.
What should repair and maintenance to electrical components include?
Repair and maintenance to electrical components shall include initial safety checks and component inspection procedures.
If a fault exists that could compromise safety, what should be done?
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, what should be done?
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.
What should initial safety checks include?
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.
During repairs to sealed components, what should be disconnected?
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.
What should be paid particular attention to, to ensure the casing is not altered in a way that affects its level of protection?
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.
What should be ensured about apparatus mounting and seals?
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.
What should replacement parts be in accordance with?
Replacement parts shall be in accordance with the manufacturer’s specifications.
What can the use of silicon sealant inhibit the effectiveness of?
The use of silicon sealant can inhibit the effectiveness of some types of leak detection equipment.
What should not be applied to a circuit without ensuring that this will not exceed the permissible voltage and current?
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.
What type of components are the only type that can be worked on while live in the presence of a flammable atmosphere?
Intrinsically safe components are the only types that can be worked on while live in the presence of a flammable atmosphere.
What should the test apparatus be at?
The test apparatus shall be at the correct rating.
What should components be replaced with?
Replace components only with parts specified by the manufacturer. Other parts may result in the ignition of refrigerant in the atmosphere from a leak.
What should cabling be checked for?
Check that cabling will not be subject to wear, corrosion, excessive pressure, vibration, sharp edges or any other adverse environmental effects.
What should the check of the cabling also take into account?
The check shall also take into account the effects of aging or continual vibration from sources such as compressors or fans.
Under what circumstances should potential sources of ignition be used when searching for or detecting refrigerant leaks?
Under no circumstances shall potential sources of ignition be used in the searching for or detection of refrigerant leaks.
What type of torch should not be used?
A halide torch (or any other detector using a naked flame) shall not be used.
If refrigerant gas escaped during installation, what should be done?
If refrigerant gas escaped during installation, ventilate the affected area.
If the refrigerant gas comes into contact with sparks or naked flames, what will it cause?
If the refrigerant gas comes into contact with sparks or naked flames, it will cause toxic gases to be generated.
How must the unit be installed?
The unit must be installed in accordance with applicable national and local regulations.
Who should carry out any electrical work?
Any electrical work should only be carried out by qualified technician and use exclusive circuits without fail.
What can insufficient capacity or imperfection in execution lead to?
Presence of insufficient capacity in power circuit or imperfection in execution leads to electric shock, fire, etc.
How should wiring be connected and fixed?
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.
What should you do to the protective covers for the outdoor unit connection cables and power cord after installation?
Securely attach the protective covers for the outdoor unit connection cables and power cord so that they do not lift up after installation.
What may result if the covers are not properly attached and installed?
If the covers are not properly attached and installed, the terminal connections may overheat and fire or electric shock may result.
What should be done before accessing any electrical part?
Switch off all supplies before accessing any electrical part.
What may improper fixing of screws cause?
Improper fixing of screw may cause leakage current and electrical shock.
What must this equipment be properly connected to?
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.
What should be provided for each unit?
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.
What type of breaker should be installed with this equipment?
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.
What type of cables connected to the outdoor unit must be used?
Cables connected to outdoor unit must be approved polychloroprene sheathed type 60245 IEC 57 or H05RN-F/H07RN-F or heavier.
Who must connect the units to the supply cables for fixed wiring?
The units must be connected to the supply cables for fixed wiring by qualified technician.
What must be incorporated in the fixed wiring?
Circuit breaker must be incorporated in the fixed wiring in accordance with the national wiring regulations.
What must the circuit breaker be?
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.
If the supply cable is damaged, who must replace it?
When the supply cable is damaged, it must be replaced by qualified technician.
What must be installed to the main power supply?
Be sure to install a current leakage breaker, main switch and fuse to the main power supply, otherwise electric shock may result.
What should be checked once installation work is completed?
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.
Where should you not install the unit?
Do not install the unit at the place where the possibility of flammable gas leakage exists. If such gas leakages should arise and the gas builds up around the unit, such situation may lead to ignition.
What should you not touch on the unit?
Do not touch the air inlet or the sharp aluminum fin, you may get injured.
What should be ensured about the shield part of the shielded cable?
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.
How should drain piping be made?
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.
What does imperfection in piping work lead to?
Imperfection in piping work leads to water leakage and may cause the house and property, etc. to become wet.
Where should the indoor unit and outdoor unit, power cords, and connection cables be positioned?
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.
What should you do when fixing the product with an overturn prevention wire?
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.
What should you confirm before wiring?
Before wiring confirm the rated voltage of the unit as shown on its nameplate, then carry out the wiring closely following the wiring diagram.
What is the working pressure higher than compared to refrigerant R22 models?
Since the working pressure is higher than that of refrigerant R22 models, some of the piping and installation and service tools are special.
When replacing a refrigerant R22 model with a new refrigerant R32 model, what should be replaced?
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.
What do models that use refrigerant R32 and R410A have a different thread diameter for?
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.
What should you be more careful about compared to R22?
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.)
What should the installation of pipe-work be kept to?
The installation of pipe-work shall be kept to a minimum.
What must ensure pipe-work be protected from?
Must ensure that pipe-work shall be protected from physical damage.
What must compliance with national gas regulations be observed?
That compliance with national gas regulations shall be observed.
What must ensure mechanical connections be for maintenance purposes?
Must ensure mechanical connections be accessible for maintenance purposes.
In cases that require mechanical ventilation, what should ventilation openings be kept clear of?
In cases that require mechanical ventilation, ventilation openings shall be kept clear of obstruction.
When disposing of the product, what should you follow and comply with?
When disposal of the product, do follow to the precautions in #12 and comply with national regulations.
Who should you contact for proper handling of the product?
Always contact to local municipal offices for proper handling.
What determines the requirements for installation space?
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.
What are the conditions for installation locations?
- 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 neighbors.
- 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.
What may be needed to carry out the installation work?
It may need two or more people to carry out the installation work.
If a strong wind blows to the area directly in front of the discharge, what may happen?
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”.
What is the risk if an exceptionally strong wind blows to the area directly in front of the discharge of the outdoor unit?
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, how should you place the unit?
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.
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