Important Notices
Before installating, please contact with local authorized maintenance center, if unit is not installed by the authorized maintenance center, the malfunction may not solved,due to discommodious contact.
The air conditioner must be installed by professionals according to the national wiring rules and this manual.
Refrigerant leak test must be made after installation.
To move and install air conditioner to another place, please contact our local special service center.
Unpacking Inspection
Open the box and check air conditioner in area with good ventilation (open the door and window) and without ignition source.
Note: Operators are required to wear anti-static devices.
It is necessary to check by professional whether there is refrigerant leakage before opening. the box of outdoor machine; stop installing the air conditioner if leakage is found.
The fire prevention equipment and anti-static precautions shall be prepared well before checking. Then check the refrigerant pipeline to see if there is any collision traces, and whether the outlook is good.
Safety Principles for Installing Air Conditioner
Fire prevention device shall be prepared before installation.
Keep installing site ventilated.(open the door and window).
lgnition source,smoking and calling is not allowed to exist in area where R32 refrigerant located.
Anti-static precautions in necessary for installing air conditioner, e.g. wear pure cotton clothes and gloves.
Keep leak detector in working state during the installation.
If R32 refrigerant leakage occurs during the installation, you shall immediately detect the concentration in indoor environment until it reaches a safe level. If refrigerant leakage affects the performance of the air conditioner, please immediately stop the operation, and the air conditioner must be vacuumed firstly and be returned to the maintenance station for processing.
Keep electric appliance, power switch, plug, socket, high temperature heat source and high static away from the area underneath sidelines of the indoor unit.
The air conditioner shall be installed in an accessible location to installation and maintenance, without obstacles that may block air inlets or outlets of indoor/outdoor units, and shall keep away from heat source, inflammable or explosive conditions.
When installing or repairing the air conditioner and the connecting line is not long enough, the entire connecting line shall be replaced with the connecting line of the original specification; extension is not allowed.
Use new connection pipe, unless re-flaring the pipe.
Requirements For Installation Position
● Avoid places of inflammable or explosive gas leakage or where there are strongly aggressive gases.
● Avoid places subjectf to strong artificial electric/magnetic fields.
● Avoid places subject to noise and resonance.
● Avoid severe natural conditions (e.g. heavy lampblack, strong sandy wind, direct sunshine or high temperature heat sources ).
● Avoid places within the reach of children.
● Shorten the connection between the indoor and outdoor units.
● Select where it is easy to perform service and repair and where the ventilation good.
● The outdoor unit shall not be installed in any way that could occupy an aisle, stairway, exit, fire escape, catwalk or any other public area.
● The outdoor unit shall be installed as far as possible from the doors and windows of the neighbors as well as the green plants.
Installation environment inspection
● Check nameplate of outdoor unit to make sure whether the refrigerant is R32.
● Check the floor space of the room. The space shall not be less than usable space(5m2) in the specification. The outdoor unit shall be installed at a well-ventilated place.
● Check the surrounding environment of installation site: R32 shall not be installed in the enclosed reserved space of a building.
● When using electric drill to make holes in the wall, check first whether there is pre-buried pipeline for water, electricity and gas.
● It is suggested to use the reserved hole in the roof of the wal.
Requirements of the mounting structure
● The mounting rack must meet the relevant national or industrial standards in terms of strength with welding and connection areas rustproofed.
● The mounting rack and its load carry surface shall be able to withstand 4 times or above the weight of the unit, or 200kg, whichever is heavier.
● The mounting rack of the outdoor unit shall be fastened with expansion bolt.
● Ensure the secure installation regardless of what type of wall on which it is installed, to prevent potential dropping that could hurt people.
Electrical Safety Requirements
● Be sure to use the rated voltage and air conditioners dedicated circuit for the power supply, and the power cable diameter must meet the national requirements.
● When the maximum current of air conditioner is≥16A, it must usethe air switch or leakage protection switch equipped with protection devices.
● The operating range is 90%-110% of the local rated voltage.But insufficient power supply malfunction, electrical shock, or fire. If the voltage instability, proposed to increase the voltage regulator.
● The minimum clearance between the air conditioner and the combustibles is 1.5 m.
● The interconnection cord connect the indoor and outdoor units. You must first choose the right cable size before preparing it for connection.
● The supply cord of appliances for outdoor use shall be between 1,5 and 3 m long and shall be either an EXTRA HARD USAGE or a HARD USAGE CORD. (Only for the AC with UL or ETL-MARKING,UL 60335-2-40)Cable Types: Outdoor Power Cable: H07RN-F or H05RN-F;Interconnection cord: H07RN-F or H05RN-F;(For the AC with CE-MARKING & CB-MARKING,IEC 60335-2-40+A1:2016)
● Minimum Cross-Sectional Area of Power cable and interconnection cord.
● The size of the interconnection cord, power cable, fuse, and switch needed is determined by the maximum current of the unit. The maximum current is indicated on the nameplate located on the side panel of the unit. Refer to this nameplate to choose the right cable, fuse, or switch.
● Note: Core number of cable refer to the detailed wiring diagram adhered on the unit which you purchased.
● Means for disconnection must be incorporated in the fixed wiring in accordance with the wiring rules.
Requirements for operations at raised height
● When carrying out installation at 2m or higher above the base level, safety belts must be worn and ropes of sufficient strength be securely fasten to the outdoor unit, to prevent falling that could cause personal injury or death as well as property loss.
Grounding Requirements
●The air conditioner is the class I electrical appliance and must ensure a reliable grounding.
●Do not connect the grounding wire to a gas pipe, water pipe, lightning rod, telephone line, or a circuit poorly grounded to the earth.
●The grounding wire is specially designed and shall not be used for other purpose, nor shall it be fastened with a common tapping screw.
●Interconnection cord diameter should be recommended as per instruction manual ,and with type 0 terminal that meet local standards (internal diameter of type 0 terminal needs to match the screw size of the unit, no more than 4.2mm). After installation, check the screws whether have been fixed effectively, and there is no risk of loosening.
Others
●The connection method of the air conditioner and the power cable and the interconnection method of each independent element shall be subject to the wiring diagram affixed to the machine.
●The model and rating value of the fuse shall be subject to the silkscreen on corresponding controller or fuse sleeve.
Packing list
NOTE:
Optional parts(* ),some models without.
Interconnection cord and sound deadening pads is optional accessorie.
All accessories shall be subject to actual packaging material, and if there is any difference, please understand.
Installation for indoor unit
Dimension drawing of indoor unit installation
Mounting plate
1. The wall for installation of the indoor unit shall be hard and firm, so as to prevent vibration.
2. Use the "+" type screw to fasten the peg board, horizontally mount the peg board on the wall, and ensure the lateral horizontal and longitudinal vertical.
3. Pull the peg board by hand after the installation, to confirm whether it is solid.
Wall-through Hole
1. Make a hole with an electric hammer or a water drill at the predetermined position on the wall for piping, which shall slant outwardly by 5°-10°.
2. To protect the piping and the cables from being damaged running through the wall, and from the rodents that may inhabit in the hollow wall, a pipe protecting ring shall be installed and sealed with putty.
Note:
Usually, the wall hole is 60mm~80mm.
Avoid pre-buried power wire and hard wall when making the hole.
Route of Pipeline
1. Depending on the position of the unit, the piping may be routed sideway from the left or the right( Fig 1 ), or vertically from the back( Fig 2 )(depending on the pipe length of the indoor unit). In the case of sideway routing, cut off the outlet cutting stock of the opposite side.
Install the connection pipe
1. Remove the fixed part to pull out pipe of indoor machine from the case. Screw the hexagon nut in the left of the joint to the end with your hand.
2. Connect the connecting pipe to the indoor unit:
Aim at the pipe center, tighten the Taper nut with fingers, and then tighten the Taper nut with a torque wrench, and the direction is shown in diagram on the right. The torque used is shown in the following table.
Note:
Carefully check if there is any damage of joints before installation.
The joints shall not be reused, unless after re-flaring the pipe.
IMPORTANT: If the unit with the quick connectors, please refer to the booklet of“Install the connection pipe(the unit with the quick connectors)".
Wrap the Piping
1. Use the insulation sleeve to wrap the joint part the indoor unit and the connection pipe, and then use insulating material to pack and seal insulation pipe, to prevent generation of condensate water on the joint part.
2. Connect the water outlet with drain pipes, and make the connection pipe, cables, and the drain hose straight.
3. Use plastic cable ties to wrap the connecting pipes, cables and drain hose. Run the pipe sloping downward.
Fixing the Indoor Unit
1. Hang the indoor unit on the peg board, and move the unit from left to right to ensure that the hook is properly positioned in the peg board.
2. Push toward the lower left side and the upper right side of the unit toward the peg board, until the hook is embedded in the slot and makes a "click" sound.
Interconnection cord installation
Connect interconnection cord of indoor unit
1. Open the panel, remove the screw on the wiring cover and then take down the cover.
2. Make the interconnection cord go through the cable-cross hole at the back of indoor unit and then pull it out from the front side.(Some models do not have a signal cable.)
3. Remove the wire clip; connect the interconnection cord to the wiring terminal according to the wiring diagram; tighten the screw and then fix the interconnection cord with wire clip.
NOTE:
This manual usually includes the wiring mode for the different kind of air conditioner. We cannot exclude the possibility that some special type of wiring diagrams are not included.
The diagram are for reference only. If the entity is difference with this wiring diagram, please refer to the detailed wiring diagram adhered on the unit which you purchased.
4. Put wiring cover back and then tighten the screw.
5. Close the panel.
After installation check
1.The screws whether have been fixed effectively, and there is no risk of loosening.
2.Connector of display board whether put in the right place and do not touch the terminal board.
3.Control box cover whether cover tightly.
Installation for outdoor unit
Dimension drawing of outdoor unit installation
Install the connection pipe
Connect the Outdoor Unit with Connecting Pipe:
Aim the counter-bore of the connecting pipe at the stop valve, and tighten the Taper nut with fingers.
Then tighten the Taper nut with a torque wrench.
★When the length of the connecting pipe is changed, extra amount of refrigerant need to be added or reduced, so that the operation and performance of the air conditioner will not be compromised.
Note:
1.This table is for reference only.
2.The joints shall not be reused, unless after re-flaring the pipe.
3.After installation, check the stop valve cover whether be fixed effectively.
IMPORTANT: If the unit with the quick connectors, please refer to the booklet of“Install the connection pipe(the unit with the quick connectors)".
Wiring Connection
1.Loosen the screws and remove E- parts cover from the unit
2.Connect the cables respectively to the corresponding terminals of the terminal board of the outdoor unit (see the wiring diagram), and if there are signals connected to the plug, just conduct butt joint.
3.Ground wire: Remove the grounding screw out of the electric bracket, cover the grounding wire end onto the grounding screw and screw it into the grounding hole.
4.Fix the cable reliably with fasteners (Pressing board).
5.Put the E-parts cover back in its original place and fasten it with screws.
Wiring diagram
NOTE:
※This manual usually includes the wiring mode for the different kind of air conditioner. We cannot exclude the possibility that some special type of wiring diagrams are not included .
※The diagram are for reference only. If the entity is difference with this wiring diagram, please refer to the detailed wiring diagram adhered on the unit which you purchased.
Vacuuming
★Exclusive R32 refrigerant pump must be used in making R32 refrigerant vacuum.
Before working on the air conditioner, remove the cover of the stop valve(gas and liquid valves)and be sure to retighten it afterward.(to prevent the potential air leakage)
1. To prevent air leakage and spilling tighten all connecting nut of all flare tubes.
2. Connect the stop valve, charge hose, manifold valve, and vacuum pump.
3. Fully open the handle Lo of the manifold valve and apply vacuum for at least 15 minutes and check that the compound vacuum gauge reads -0.1MPa(-76cmHg).
4. After applying vacuum, fully open the stop valve with a hex wrench.
5. Check that both indoor and outdoor connections are free of air leakage.
IMPORTANT: The unit with the quick connectors does not require vacuum pumping.
Outdoor condensation drainage(Heat pump type only)
When the unit is heating, the condensing water and defrosting water can be out reliably through the drain house.
Installation:
Install the outdoor drain elbow in中25 hole on the base plate, and joint the drain hose to the elbow, so that the waste water formed in the outdoor unit can be drained out to a proper plate.
Check after installation and test operation
Check after installation
★Electrical Safety Check
1. If the supply voltage is as required.
2. If there is any faulty or miss connection in each of the power, signal and grounding wires.
3. If the grounding wire of the air conditioner is securely grounded.
★Installation Safety Check
1. If the installation is secure.
2. If the water drain is smooth.
3. If the wiring and piping are correctly installed.
4. Check that no foreign matter or tools are left inside the unit.
5. Check the refrigerant pipeline is protected well.
★Leak test of the refrigerant
Depending on the installation method, the following methods may be used to check for suspect leak, on areas such as the four connections of the outdoor unit and the cores of the cut-off valves and t-valves:
1.Bubble method: Apply of spray a uniform layer of soap water over the suspected leak spot and observe carefully for bubble.
2.Instrument method: Checking for leak by pointing the probe of the leak detector according to the instruction to the suspect points of leak.
Note: Make sure that the ventilation is good before checking.
Test Operation
Test Operation preparation:
※Verify that all piping and connection cables are well connected.
※Confirm that the valve at the gas side the liquid-side are fully open.
※Connect the power cable to an independent power socket.
※Install batteries in remote control.
Note: Make sure that the ventilation is good before testing.
Test Operation method:
1. Turn on the power and push the ON/OFF switch button of the remote controller to start the air conditioner.
2. Select COOL, HEAT (not available on cool only models) , SWING and other operation modes with the remote controller and see if the operation is ok.
Maintenance Notice
Attention:
For maintenance or scrap, please contact authorized service centers.
Maintenance by unqualified person may cause dangers.
Feed air conditioner with R32 refrigerant, and maintain the air conditioner in strictly accordance with manufacturer's requirements. The chapter is mainly focused on special maintenance requirements for appliance with R32 refrigerant. Ask repairer to read after-sales technical service handbook for detailed information.
Qualification requirements of maintenance personnel
1.Special training additional to usual refrigerating equipment repair procedures is required when equipment with flammable refrigerants is affected. In many countries, this training is carried out by national training organisations that are accredited to teach the relevant national competency standards that may be set in legislation. The achieved competence should be documented by a certificate.
2.The maintenance and repair of the air conditioner must be conducted according to the method recommended by the manufacturer. If other professionals are needed to help maintain and repair the equipment, it should be conducted under the supervision of individuals who have the qualification to repair AC equipped with flammable refrigerant.
Inspection of the Site
Safety inspection must be taken before maintaining equipment with R32 refrigerant to make sure the risk of fire is minimized. Check whether the place is well ventilated, whether anti-static and fire prevention equipment is perfect.
While maintaining the refrigeration system, observe the following precautions before operating the system.
Operating Procedures
1.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. 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.
3.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.
4.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.
5.Ventilated Area(open the door and window):
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.
6.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 following checks shall be applied to installations using flammable refrigerants:
●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.
●If an indirect refrigerating circuit is being used, the secondary circuit shall be checked for the presence of refrigerant.
●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.
7.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 capacitors are discharged: this shall be done in a safe manner to avoid possibility of sparking.
●That no live electrical components and wiring are exposed while charging, recovering or purging the system.
●Keep continuity of earthing.
Inspection of Cable
Check the cable for wear, corrosion, overvoltage, vibration and check if there are sharp edges and other adverse effects in the surrounding environment. During the inspection, the impact of aging or the continuous vibration of the compressor and the fan on it should be taken into consideration.
Leakage check of R32 refrigerant
Note: Check the leakage of the refrigerant in an environment where there is no potential ignition source. No halogen probe (or any other detector that uses an open flame) should be used.
Leak detection method:
For systems with refrigerant R32, electronic leak detection instrument is available to detect and leak detection should not be conducted in environment with refrigerant. Make sure the leak detector will not become a potential source of ignition, and is applicable to the measured refrigerant. Leak detector shall be set for the minimum ignitable fuel concentration (percentage) of the refrigerant. Calibrate and adjust to proper gas concentration (no more than 25%) with the used refrigerant.
The fluid used in leak detection is applicable to most refrigerants. But do not use chloride solvents to prevent the reaction between chlorine and refrigerants and the corrosion of copper pipeline.
If you suspect a leak, then remove all the fire from the scene or put out the fire.
Note: Check the leakage of the refrigerant in an environment where there is no potential ignition source. No halogen probe (or any other detector that uses an open flame) should be used.
Leak detection method:
For systems with refrigerant R32, electronic leak detection instrument is available to detect and leak detection should not be conducted in environment with refrigerant. Make sure the leak detector will not become a potential source of ignition, and is applicable to the measured refrigerant. Leak detector shall be set for the minimum ignitable fuel concentration (percentage) of the refrigerant. Calibrate and adjust to proper gas concentration (no more than 25%) with the used refrigerant.
The fluid used in leak detection is applicable to most refrigerants. But do not use chloride solvents to prevent the reaction between chlorine and refrigerants and the corrosion of copper pipeline.
If you suspect a leak, then remove all the fire from the scene or put out the fire.
If the location of the leak needs to be welded, then all refrigerants need to be recovered, or, isolate all refrigerants away from the leak site (using cut-off valve). Before and during the welding, use OFN to purify the entire system.
Removal and Vacuum Pumping
1.Make sure there is no ignited fire source near the outlet of the vacuum pump and the ventilation is well.
2.Allow the maintenance and other operations of the refrigeration circuit should be carried out according to the general procedure, but the following best operations that the flammability is already taken into consideration are the key. You should follow the following procedures:
●Remove the refrigerant.
●Decontaminate the pipeline by inert gases.
●Evacuation.
●Decontaminate the pipeline by inert gases again.
●Cut or weld the pipeline.
3.The refrigerant should be returned to the appropriate storage tank. The system should be blown with oxygen free nitrogen to ensure safety. This process may need to be repeated for several times. This operation shall not be carried out using compressed air or oxygen.
4.Through blowing process, the system is charged into the anaerobic nitrogen to reach the working pressure under the vacuum state, then the oxygen free nitrogen is emitted to the atmosphere, and in the end, vacuumize the system. Repeat this process until all refrigerants in the system is cleared. After the final charging of the anaerobic nitrogen, discharge the gas into the atmosphere pressure, and then the system can be welded.
This operation is necessary for welding the pipeline.
Procedures of Charging Refrigerants
As a supplement to the general procedure, the following requirements need to be added:
- Make sure that there is no contamination among different refrigerants when using a refrigerant charging device. The pipeline for charging refrigerants should be as short as possible to reduce the residual of refrigerants in it.
- Storage tanks should remain vertically up.
- Make sure the grounding solutions are already taken before the refrigeration system is charged with refrigerants.
- After finishing the charging (or when it is not yet finished), label the mark on the system.
- Be careful not to overcharge refrigerants.
Scrap and Recovery
Scrap:
Before this procedure, the technical personnel shall be thoroughly familiar with the equipment and all its features, and make a recommended practice for refrigerant safe recovery. For recycling the refrigerant, shall analyze the refrigerant and oil samples before operation. Ensure the required power before the test.
1.Be familiar with the equipment and operation.
2.Disconnect power supply.
3.Before carrying out this process, you have to make sure:
●lf necessary, mechanical equipment operation should facilitate the operation of the refrigerant tank.
●AlI personal protective equipment is effective and can be used correctly.
●The whole recovery process should be carried out under the guidance of qualified personnel.
●The recovering of equipment and storage tank should comply with the relevant national standards.
4.If possible, the refrigerating system should be vacuumized.
5.If the vacuum state can't be reached, you should extract the refrigerant in each part of the system from many places.
6.Before the start of the recovery, you should ensure that the capacity of the storage tank is sufficient.
7.Start and operate the recovery equipment according to the manufacturer's instructions.
8.Don't fill the tank to its full capacity (the liquid injection volume does not exceed 80% of the tank volume).
9.Even the duration is short, it must not exceed the maximum working pressure of the tank.
10.After the completion of the tank flling and the end of the operation process, you should make sure that the tanks and equipment should be removed quickly and all closing valves in the equipment are closed.
11.The recovered refrigerants are not allowed to be injected into another system before being purified and tested.
Note: The identification should be made after the appliance is scrapped and refrigerants are evacuated. The identification should contain the date and endorsement. Make sure the identification on the appliance can reflect the flammable refrigerants contained in this appliance.
Recovery:
1.The clearance of refrigerants in the system is required when repairing or scrapping the appliance. It is recommended to completely remove the refrigerant.
2.Only a special refrigerant tank can be used when loading the refrigerant into the storage tank. Make sure the capacity of the tank is appropriate to the refrigerant injection quantity in the entire system. All tanks intended to be used for the recovery of refrigerants should have a refrigerant identification (i.e. refrigerant recovery tank).
Storage tanks should be equipped with pressure relief valves and globe valves and they should be in a good condition. If possible, empty tanks should be evacuated and maintained at room temperature before use.
3.The recovery equipment should be kept in a good working condition and equipped with equipment operating instructions for easy access. The equipment should be suitable for the recovery of R32 refrigerants. Besides, there should be a qualified weighting apparatus which can be normally used. The hose should be linked with detachable connection joint of zero leakage rate and be kept in a good condition.
Before using the recovery equipment, check if it is in a good condition and if it gets perfect maintenance. Check if II electrical components are sealed to prevent the leakage of the refrigerant and the fire caused by it. If you have any question, please consult the manufacturer.
4.The recovered refrigerant shall be loaded in the appropriate storage tanks, attached with a transporting instruction, and returned to the refrigerant manufacturer. Don't mix refrigerant in recovery equipment, especially a storage tank.
5.The space loading R32 refrigeration can't be enclosed in the process of transportation.
Take anti electrostatic measures if necessary in transportation. In the process of transport, loading and unloading, necessary protective measures must be taken to protect the air conditioner to ensure that the air conditioner is not damaged.
6.When removing the compressor or clearing the compressor oil, make sure the compressor is pumped to an appropriate level to ensure that there is no residual R32 refrigerants in the lubricating oil. The vacuum pumping should be carried out before the compressor is returned to the supplier. Ensure the safety when discharging oil from the system.
