Table of Contents
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Owner's Manual
Original Instructions
Air Conditioners
DC Inverter U-match Series Floor Ceiling Type Unit
Models:
Indoor Unit
GUD35ZD/A-T
GUD50ZD/A-T
GUD71ZD/A-T
GUD85ZD/A-T
GUD100ZD/A-T
GUD125ZD/A-T
GUD140ZD/A-T
GUD160ZD/A-T
Outdoor Unit
GUD35W/NhA-T
GUD50W/NhA-T
GUD71W/NhA-T
GUD85W/NhA-T
GUD100W/NhA-T
GUD125W/NhA-T
GUD140W/NhA-T
GUD160W/NhA-X
GUD100W/NhA-X
GUD125W/NhA-X
GUD140W/NhA-X
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Table of Contents
Related Manuals for Gree U-MATCH GUD50ZD/A-T
Summary of Contents for Gree U-MATCH GUD50ZD/A-T
- Page 1 Owner's Manual Original Instructions Air Conditioners DC Inverter U-match Series Floor Ceiling Type Unit Models: Indoor Unit Outdoor Unit GUD35ZD/A-T GUD35W/NhA-T GUD50ZD/A-T GUD50W/NhA-T GUD71ZD/A-T GUD71W/NhA-T GUD85ZD/A-T GUD85W/NhA-T GUD100ZD/A-T GUD100W/NhA-T GUD100W/NhA-X GUD125ZD/A-T GUD125W/NhA-T GUD125W/NhA-X GUD140ZD/A-T GUD140W/NhA-T GUD140W/NhA-X GUD160ZD/A-T GUD160W/NhA-X...
- Page 2 To Users Thank you for selecting Gree’s product. Please read this instruction manual carefully before installing and using the product, so as to master and correctly use the product. In order to guide you to correctly install and use our product and achieve expected operating effect, we hereby...
- Page 3 (10) The final right to interpret for this instruction manual belongs to Gree Electric Appliances Inc. of Zhuhai.
- Page 4 Exception Clauses Manufacturer will bear no responsibilities when personal injury or property loss is caused by the following reasons: (1) Damage the product due to improper use or misuse of the product; (2) Alter, change, maintain or use the product with other equipment without abiding by the instruction manual of manufacturer;...
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Page 5: Table Of Contents
Contents 1 Safety Notices (Please be sure to abide) ........... 1 2 Product Introduction ................6 2.1 Overall Layout ................. 6 2.2 Product Operating Range ............7 2.3 Standard Accessories ............. 7 3 Installation ..................8 3.1 Installation Preparation ............8 3.2 Unit Installation.............. -
Page 6: Safety Notices (Please Be Sure To Abide)
DC Inverter U-match Series Floor Ceiling Type Unit 1 Safety Notices (Please be sure to abide) SPECIAL WARNING: (1) Be sure to comply with national gas regulations. (2) Do not pierce or burn. (3) Do not use means to accelerate the defrosting process or to clean, other than those recommended by the manufacturer. - Page 7 DC Inverter U-match Series Floor Ceiling Type Unit anti-corrosive or anti-explosion function. Please read this operating manual carefully before operating the unit. The air conditioner is charged with inflammable refrigerant R32 (GWP: 675). Before using the air conditioner, please read the instruction manual.
- Page 8 DC Inverter U-match Series Floor Ceiling Type Unit WARNING (2) Any 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 authorises their competence to handle refrigerants safely in accordance with an industry recognised assessment specification.
- Page 9 DC Inverter U-match Series Floor Ceiling Type Unit WARNING (14) Do not operate the air conditioner with wet hands. Do not wash or sprinkle water on the air conditioner, otherwise malfunction or electric shock will occur. (15) Do not dry the filter with naked flame or an air blower; otherwise the filter will be out of shape.
- Page 10 DC Inverter U-match Series Floor Ceiling Type Unit NOTICE (5) Please select the proper copper pipe according to the requirement for pipe thickness. (6) Indoor unit can only be installed indoors while outdoor unit can be installed either indoors or outdoors. Never install the air conditioner in the following places: a) Places with oil smoke or volatile liquid: plastic parts may deteriorate and fall off or even cause water leakage.
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Page 11: Product Introduction
DC Inverter U-match Series Floor Ceiling Type Unit 2 Product Introduction 2.1 Overall Layout... -
Page 12: Product Operating Range
DC Inverter U-match Series Floor Ceiling Type Unit 2.2 Product Operating Range Cooling Heating Outdoor temperature DB(℃) -20~48 -20~24 Indoor temperature DB/WB(℃) 32/23 27/- (Maximum) 2.3 Standard Accessories Indoor Unit Accessories Name Appearance Q'ty Usage To fix the hook on the Nut with Washer cabinet of the unit. -
Page 13: Installation
DC Inverter U-match Series Floor Ceiling Type Unit 3 Installation 3.1 Installation Preparation 3.1.1 Notice on Installation (1) Notice on Refrigerant Concentration before Installation. This air conditioner uses R32 refrigerant. The construction area for installation, operation and storage of the air conditioner must be larger than the minimum construction area. - Page 14 DC Inverter U-match Series Floor Ceiling Type Unit Ceiling type Wall mounted type Floor standing type Area Area Area Weight(kg) Weight(kg) Weight(kg) 4.31 6.44 58.0 5.00 7.47 67.3 5.74 8.58 77.2 6.54 9.76 87.9 7.38 11.0 99.2 8.27 12.4 9.22 13.8 10.2 15.3...
- Page 15 DC Inverter U-match Series Floor Ceiling Type Unit Before charging, keep the refrigerant tank in an upright position. After charging, stick a label on the air conditioner saying no excessive charging. (4) The following tools will be used: 1) Liquid-level gauge; 2) Screwdriver;...
- Page 16 DC Inverter U-match Series Floor Ceiling Type Unit drain system of the air conditioner. (7) If hoisting screw bolts are to be used, check whether the installation location is safe enough. If not safe, reinforce the location before installation. (8) Indoor unit, power cord, connecting wires and communication cords should be at least 1m from television and radio.
- Page 17 DC Inverter U-match Series Floor Ceiling Type Unit (9) Install the outdoor unit at a place where condensate can be easily drained. 3.1.3 Unit Dimension WARNING (1) Install the indoor unit in a location which can withstand a load of at least five times the weight of the main unit and which will not amplify sound or vibration.
- Page 18 DC Inverter U-match Series Floor Ceiling Type Unit Dimensions Model GUD85ZD/A-T 1200 1142 GUD100ZD/A-T 1200 1142 GUD125ZD/A-T 1570 1512 GUD140ZD/A-T 1570 1512 GUD160ZD/A-T 1570 1512 Outdoor Unit GUD35W/NhA-T, GUD50W/NhA-T, GUD71W/NhA-T, GUD85W/NhA-T.
- Page 19 DC Inverter U-match Series Floor Ceiling Type Unit GUD100W/NhA-T, GUD125W/NhA-T, GUD140W/NhA-T, GUD100W/NhA-X, GUD125W/NhA-X, GUD140W/NhA-X.
- Page 20 DC Inverter U-match Series Floor Ceiling Type Unit GUD160W/NhA-X.
- Page 21 DC Inverter U-match Series Floor Ceiling Type Unit Unit: mm Dimensions Model GUD35W/NhA-T GUD50W/NhA-T GUD71W/NhA-T GUD85W/NhA-T 1002 GUD100W/NhA-T GUD100W/NhA-X GUD125W/NhA-T GUD125W/NhA-X GUD140W/NhA-T GUD140W/NhA-X GUD160W/NhA-X 1345 3.1.4 Diagram of Unit Installation Space and Location (1) Diagram of installation space and location for outdoor unit (Notice: for best performance of the outdoor unit, make sure its installation space conforms to the following installation dimensions).
- Page 22 DC Inverter U-match Series Floor Ceiling Type Unit (mm) ≥100 — ≥300 ≥100 ≥100 A,B,C, — ≥100 ≥1000 — ≥300 ≥150 ≥150 ≥1000 A,B,C,E — ≥1000 — ≥1000 ≥1000 — ＜H ≥100 ≥1000 > H ＞H ≥100 ≥1000 < H ≤1/2 H ≥250 ≥2000...
- Page 23 DC Inverter U-match Series Floor Ceiling Type Unit (mm) — ≥300 ≥300 ≥1000 A,B,C — ≥300 ≥300 ≥1000 ≥1000 A,B,C,E — ≥2000 — ≥2000 ≥1000 ＜H ＞H ≥300 ≥2000 ≤1/2 H ≥250 ≥2000 ＞H ≤H ≥300 ≥2500 1/2 H＜H ≤1/2 H ≥300 ≥2000 ≥1000 ＜H...
- Page 24 DC Inverter U-match Series Floor Ceiling Type Unit (mm) ≤1/2 H b≥250 ≤H 1/2 H＜H b≥300 ＞H Prohibited 4) When outdoor units are installed one above another. Unit: mm 2000 (2) Diagram of installation location and space for indoor unit (Notice: for the best performance of indoor unit, make sure its installation space conforms to the following installation dimensions).
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Page 25: Unit Installation
DC Inverter U-match Series Floor Ceiling Type Unit 2) The air inlet and outlet of the unit should never be clogged so that the airflow can reach every corner of the room. 3) Leave service space around the unit. Floor type Unit: mm Ceiling type 4) Install the unit where the drain pipe can be easily installed. - Page 26 DC Inverter U-match Series Floor Ceiling Type Unit 3.2.1.2 Indoor Unit Installation (1) Determine the location of the hanger through the paper template, and then remove the paper template. (2) Insert the anchor bolts into the drilled holes, and drive the pins completely into the anchor bolts with a hammer.
- Page 27 DC Inverter U-match Series Floor Ceiling Type Unit Floor type Ceiling type Unit: mm Hanger Left side panel Right side panel (6) Adjust the height of the unit to make the drain pipe slant slightly downward so that the drainage will become much smoother.
- Page 28 DC Inverter U-match Series Floor Ceiling Type Unit 3.2.1.3 Leveling The water level test must be done after installing the indoor unit to make the unit is horizontal, as shown below. 3.2.2 Outdoor Unit Installation (1) If the outdoor unit is installed on a solid ground such as concrete, use M10 screw bolts and nuts to secure the unit and make sure the unit stands erect and level.
- Page 29 DC Inverter U-match Series Floor Ceiling Type Unit 3.2.3 Connection Pipe Installation 3.2.3.1 Installation Notice and Requirement on Connection Pipe NOTICE ① Indoor unit adopts special joints that can’t be disassembled. The installation method is the same as the unit with ordinary joints. However, because the joints can’t be removed, if the connection is not good and causes leakage, the joints need to be cut and welded again for replacement.
- Page 30 DC Inverter U-match Series Floor Ceiling Type Unit Biggest Drain pipe Size of Fitting Maximum drop (outer Pipe(Inch) Item pipe between dimension × length indoor and wall Liquid Model outdoor thickness) pipe pipe units (m) (mm) GUD35ZD/A-T GUD35W/NhA-T GUD50ZD/A-T GUD50W/NhA-T GUD71ZD/A-T GUD71W/NhA-T GUD85ZD/A-T...
- Page 31 DC Inverter U-match Series Floor Ceiling Type Unit The requirement on the adding of oil return bend is as below: (1) Outdoor unit is beneath the indoor unit. There’s no need to add non-return bend at the lowest or highest position of the vertical pipe, as shown below: Indoor unit System gas pipe...
- Page 32 DC Inverter U-match Series Floor Ceiling Type Unit Dimensions for the making of oil return bend are as follows: B(mm) C(mm) Ф9 ≥20 ≤150 Ф12 ≥26 ≤150 Ф16 ≥33 ≤150 3.2.3.2 Pipe Flaring (1) Cut the connection pipe with a pipe cutter. (2) The mouth of connection pipe should face downward.
- Page 33 DC Inverter U-match Series Floor Ceiling Type Unit (2) Do not bend the pipes in an angle more than 90°. (3) If the pipe is repeatedly bent or extended, it will become hard and difficult to be bent or extended. So do not bend or extend the pipe for more than 3 times.
- Page 34 DC Inverter U-match Series Floor Ceiling Type Unit Pipe diameter (in.) Tightening torque (N·m) 15-30 35-40 45-50 60-65 70-75 80-85 Screw on the flare nut of the flaring connecting pipe on the outdoor unit valve. The method of screwing the flare nut is the same with that for indoor unit.
- Page 35 DC Inverter U-match Series Floor Ceiling Type Unit Coupler heat insulation Reference A (large) on the pipe Front outlet Reference A: Cover this portion with heat insulating material also without fail Coupler heat insulation (small) on the pipe No gap Heat insulation pipe Liquid pipe Gas pipe...
- Page 36 DC Inverter U-match Series Floor Ceiling Type Unit assembly to the service port of the unit’s gas valve, and meanwhile the gas and liquid valves should be kept closed in case of refrigerant leak. (3) Connect the hose used for evacuation to the vacuum pump. (4) Open the switch at the lower pressure side of the manifold valve assembly and start the vacuum pump.
- Page 37 DC Inverter U-match Series Floor Ceiling Type Unit Pressure gauge (Low-pressure) gauge manifold Pressure gauge (Hi-pressure) Switch (Low-pressure) Switch (Hi-pressure) Connection pipe Connection pipe (to indoor unit) Liquid valve Gas valve Service pipe Hose Service port Hose with the valve pin Vacuum pump Notice: For large-size units, there are maintenance ports for liquid valve...
- Page 38 DC Inverter U-match Series Floor Ceiling Type Unit the use of detergents containing chlorine shall be avoided as the chlorine may react with the refrigerant and corrode the copper pipe-work. leak suspected, naked flames shall 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.
- Page 39 DC Inverter U-match Series Floor Ceiling Type Unit 3.2.6 Installation of Drain Pipe (1) It is not allowed to connect the condensate drain pipe into waste pipe or other pipelines which are likely to produce corrosive or peculiar smell to prevent the smell from entering indoors or corrupt the unit.
- Page 40 DC Inverter U-match Series Floor Ceiling Type Unit (5) Installing the Drain Pipes 1) For determining the position of the drain hose, perform the following procedures. 2) Insert the drain pipe to the drain outlet of the unit and then tighten the clamp securely with tape.
- Page 41 DC Inverter U-match Series Floor Ceiling Type Unit connecting wire in the same direction as the piping. 3.2.6.2 Connecting the Drain Hose (1) Connect the extension auxiliary pipe to the local piping. (2) Prepare the local piping at the connection point for the drain pipe, as shown in the installation drawings.
- Page 42 DC Inverter U-match Series Floor Ceiling Type Unit (2) If the outdoor unit is above the indoor unit, arrange the pipeline according to the following diagram. 1) Wind the insulating tape from bottom to top. 2) The whole pipeline should be wound together to avoid water returning to the room.
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Page 43: Electrical Installation
DC Inverter U-match Series Floor Ceiling Type Unit Ceiling type Floor type 3.3 Electrical Installation 3.3.1 Requirement and Notice on Electrical Installation WARNING The electrical installation for the air conditioner should observe the following requirements: ①. The electrical installation must be conducted by professionals in compliance with local laws and regulations and the instructions in this manual. - Page 44 Do not change the power cables arbitrarily. Do not change the length and terminals of the power cables. If you want to change the power cables, please contact Gree’s local service center. ⑩. Wiring terminals should be connected firmly to the terminal board.
- Page 45 DC Inverter U-match Series Floor Ceiling Type Unit and outdoor units and the communication cords. Make sure the wires are not clamped too tight. ⑫. The wire gauge of power cord should be large enough. Damaged power cord or other wires must be replaced by specialized wires.
- Page 46 DC Inverter U-match Series Floor Ceiling Type Unit units must be able to be plugged or unplugged. ③. Circuit breaker and power cord specifications listed in the above table are determined based on the maximum power input of the units. ④.
- Page 47 DC Inverter U-match Series Floor Ceiling Type Unit 0.75mm². It’s recommended to use 0.75mm² power cords as the communication cords. 3.3.3 Connection of Power Cord and Communication Cord (1) For solid wires (as shown below): 1) Use wire cutters to cut off the wire end and then peel away about 25mm of the insulation layer.
- Page 48 DC Inverter U-match Series Floor Ceiling Type Unit (3) How to connect the connection wire and power cord: Lead the connection wire and power cord through the insulation tube. Then fix the wires with wire clamps (as shown in the next figure.) Warning ①.
- Page 49 DC Inverter U-match Series Floor Ceiling Type Unit (1) Wire between indoor and outdoor units. Single-phase unit: GUD35W/NhA-T, GUD50W/NhA-T, GUD71W/NhA-T, GUD85W/NhA-T Outdoor Unit Indoor Unit L N L1N1 Wired Controller Breaker Breaker Power:220V-240V~50Hz/208V-230V~60Hz Power:220V-240V~50Hz/208V-230V~60Hz Outdoor Unit Indoor Unit Wired Controller Breaker Power:220V-240V~50Hz/208V-230V~60Hz Power:220V-240V~50Hz/208V-230V~60Hz...
- Page 50 DC Inverter U-match Series Floor Ceiling Type Unit Single-phase unit: GUD100W/NhA-T, GUD125W/NhA-T, GUD140W/NhA-T Outdoor Unit Indoor Unit Wired Controller Breaker Breaker L N PE Power:220V-240V~50Hz/208V-230V~60Hz Power:220V-240V~50Hz/208V-230V~60Hz Outdoor Unit Indoor Unit Wired Controller Breaker Power:220V-240V~50Hz/208V-230V~60Hz Power:220V-240V~50Hz/208V-230V~60Hz GUD100ZD/A-T+GUD100W/NhA-T GUD125ZD/A-T+GUD125W/NhA-T ① Power cord 3×4.0mm ②...
- Page 51 DC Inverter U-match Series Floor Ceiling Type Unit Three-phase unit: GUD100W/NhA-X, GUD125W/NhA-X, GUD140W/NhA-X, GUD160W/NhA-X. Outdoor Unit Indoor Unit Wired Controller Breaker Breaker Power:220V-240V~50Hz/208V-230V~60Hz Power:380V-415V 3N ~ 50Hz/60Hz Outdoor Unit Indoor Unit Wired Controller Breaker Power:220V-240V~ 50Hz/208V-230V~60Hz Power:380V-415V 3N ~ 50Hz/60Hz GUD100ZD/A-T +GUD100W/NhA-X GUD125ZD/A-T +GUD125W/NhA-X GUD140ZD/A-T +GUD140W/NhA-X...
- Page 52 DC Inverter U-match Series Floor Ceiling Type Unit (2) Electrical wiring of indoor unit and Electrical wiring of outdoor unit Warning ①. High and low voltage wires should be led through different rubber rings of the electric box cover. ②. Do not bundle up the connection wire and communication wire of wired control or lay them side by side, otherwise errors will occur.
- Page 53 DC Inverter U-match Series Floor Ceiling Type Unit 2) Outdoor side Remove the big handle/front panel of the outdoor unit and insert one end of the communication cord and the power cord to the terminal board. Single-phase: GUD35W/NhA-T, GUD50W/NhA-T, GUD71W/NhA-T, GUD85W/NhA-T.
- Page 54 DC Inverter U-match Series Floor Ceiling Type Unit Single-phase: GUD100W/NhA-T, GUD125W/NhA-T, GUD140W/NhA-T. a) Wire routing of separated power supply for single phase. The communication wire gets in from the upper hole The power cords of outdoor unit and indoor unit get in from the lower hole.
- Page 55 DC Inverter U-match Series Floor Ceiling Type Unit b) Wire routing of unified power supply for single phase. The communication wire gets in from the upper hole The power cords of outdoor unit and indoor unit get in from the lower hole.
- Page 56 DC Inverter U-match Series Floor Ceiling Type Unit Three-phase: GUD100W/NhA-X, GUD125W/NhA-X, GUD140W/NhA-X, GUD160W/NhA-X. a) Wire routing of separated power supply for three phase. Only for GUD160W/NhA-X The communication wire gets in from the upper hole The power cords of outdoor unit and indoor unit get in from the lower hole.
- Page 57 DC Inverter U-match Series Floor Ceiling Type Unit b) Wire routing of unified power supply for three-phase Only for GUD160W/NhA-X The communication wire gets in from the upper hole The power cords of outdoor unit and indoor unit get in from the lower hole.
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Page 58: Check After Installation
DC Inverter U-match Series Floor Ceiling Type Unit 3.4 Check after Installation Check Items after Installation Possible events due to improper Check items installation The unit may fall down, vibrate or Is the main body installed securely? produce noise. Cooling capacity may become Did you do water leakage test? unsatisfactory. -
Page 59: Operation Specification
DC Inverter U-match Series Floor Ceiling Type Unit (2) If the outside temperature is more than 30℃, heating mode can’t be enabled. (3) Make sure the indoor and outdoor units can run normally. (4) If there’s sound of liquid shock when the compressor is running, then stop the air conditioner immediately. -
Page 60: Maintenance
DC Inverter U-match Series Floor Ceiling Type Unit 5 Maintenance 5.1 Failures Not Caused by Faults of the AC (1) If your air conditioner fails to function normally, please first check the following items before maintenance: Problem Cause Corrective measure If you turn off the unit and then immediately turn it on, in order to protect the compressor and... - Page 61 DC Inverter U-match Series Floor Ceiling Type Unit (2) The following situations are not operation failures. Problem Time of occurrence Cause Mist comes If the unit is running under high from the air During operation. humidity, the wet air in the room conditioner.
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Page 62: Error Code
②. Do not repair the air conditioner by yourself. Improper maintenance will cause electric shock or fire hazard. Please contact Gree’s authorized service center and send for professional service staff to repair. If the display panel or wired control displays an error code, please refer to the error code meaning stated in the following table. - Page 63 DC Inverter U-match Series Floor Ceiling Type Unit Number Error code Error Compressor overload protection Overload IPM protection DC fan error Driver out-of-step protection Pfc protection Startup failure Compressor phase-sequence protection Power protection IDU and ODU unmatched 4–way valve switch-over error Driver reset protection Over-current protection Master control and driver communication error...
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Page 64: Unit Maintenance
DC Inverter U-match Series Floor Ceiling Type Unit States of the Indicating Lamps: (1) Indicating Lamp of “POWER”: The indicating lamp will shine when power on, while it will go out when power off. (2) Indicating Lamp of “COOL”: The indicating lamp will shine when “COOL”... - Page 65 DC Inverter U-match Series Floor Ceiling Type Unit 5.3.1 Clean Air Filter (1) Disassembly method of filter screen and electric box cover. How to clean the air filter ① Open the air inlet grille. a) Firstly unfix two buckles on the grille as shown on the picture.
- Page 66 DC Inverter U-match Series Floor Ceiling Type Unit How to clean the air filter Disassembly method of right side ④ Disassemble the right side board. board Step 3. ⑤ Disassemble the electric box cover After the right side board is removed, the electric box cover will be shown up and disassemble the fixed screws on it.
- Page 67 (6) Check if the installation of outdoor unit is firm, if not, please contact with Gree appointed maintenance center. 5.3.5 Maintenance at the end of the Using Season (1) Cut off the main power of air conditioner;...
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Page 68: Notice On Maintenance
DC Inverter U-match Series Floor Ceiling Type Unit 5.3.6 Components Replacement Components are available in Gree agency or Gree distributors nearby. 5.4 Notice on Maintenance 5.4.1 Information on Servicing The manual shall contain specific information for service personnel who shall be instructed to undertake the following when servicing an appliance that employs a flammable refrigerant. - Page 69 DC Inverter U-match Series Floor Ceiling Type Unit 5.4.1.4 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 flammable atmospheres. Ensure that the leak detection equipment being used is suitable for use with flammable refrigerants, i.e.
- Page 70 DC Inverter U-match Series Floor Ceiling Type Unit preferably expel it externally into the atmosphere. 5.4.1.8 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.
- Page 71 DC Inverter U-match Series Floor Ceiling Type Unit 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: (1) That capacitors are discharged: this shall be done in a safe manner to avoid possibility of sparking;...
- Page 72 DC Inverter U-match Series Floor Ceiling Type Unit Notice ： The use of silicon sealant may inhibit the effectiveness of some types of leak detection equipment. Intrinsically safe components do not have to be isolated prior to working on them. 5.4.3 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...
- Page 73 DC Inverter U-match Series Floor Ceiling Type Unit consideration. The following procedure shall be adhered to： (1) Remove refrigerant; (2) Purge the circuit with inert gas; (3) Evacuate; (4) Purge again with inert gas; (5) Open the circuit by cutting or brazing. The refrigerant charge shall be recovered into the correct recovery cylinders.
- Page 74 DC Inverter U-match Series Floor Ceiling Type Unit (3) Ensure that the refrigeration system is earthed prior to charging the system with refrigerant. (4) Label the system when charging is complete (if not already). (5) Extreme care shall be taken not to overfill the refrigeration system. (6) Prior to recharging the system it shall be pressure tested with OFN.
- Page 75 DC Inverter U-match Series Floor Ceiling Type Unit (5) If a vacuum is not possible, make a manifold so that refrigerant can be removed from various parts of the system. (6) Make sure that cylinder is situated on the scales before recovery takes place.
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Page 76: After-Sales Services
When oil is drained from a system, it shall be carried out safely. 5.5 After-Sales Services Any quality or other issues encountered in the purchased air conditioner, please contact the local Gree after-sales service department.