Gree GUD35P/A-T Owner's Manual
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Gree GUD35P/A-T Owner's Manual

Duct type unit
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Owner's Manual
Original Instructions
Air Conditioners
DC Inverter U-match Series Duct Type Unit
Models:
Indoor Unit
GUD35P/A-T
GUD50P/A-T
GUD71P/A-T
GUD85P/A-T
GUD100PH/A-T GUD100PHS/A-T GUD100W/NhA-T GUD100W/NhA-X
GUD125PH/A-T GUD125PHS/A-T GUD125W/NhA-T GUD125W/NhA-X
GUD140PH/A-T GUD140PHS/A-T GUD140W/NhA-T GUD140W/NhA-X
GUD160PH/A-T GUD160PHS/A-T GUD160W/NhA-X
GUD35PS/A-T
GUD50PS/A-T
GUD71PS/A-T
GUD85PS/A-T
Outdoor Unit
GUD35W/NhA-T
GUD50W/NhA-T
GUD71W/NhA-T
GUD85W/NhA-T

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Summary of Contents for Gree GUD35P/A-T

  • Page 1 Owner's Manual Original Instructions Air Conditioners DC Inverter U-match Series Duct Type Unit Models: Indoor Unit Outdoor Unit GUD35P/A-T GUD35PS/A-T GUD35W/NhA-T GUD50P/A-T GUD50PS/A-T GUD50W/NhA-T GUD71P/A-T GUD71PS/A-T GUD71W/NhA-T GUD85P/A-T GUD85PS/A-T GUD85W/NhA-T GUD100PH/A-T GUD100PHS/A-T GUD100W/NhA-T GUD100W/NhA-X GUD125PH/A-T GUD125PHS/A-T GUD125W/NhA-T GUD125W/NhA-X GUD140PH/A-T GUD140PHS/A-T GUD140W/NhA-T GUD140W/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...
  • Page 3 (10) The final right to interpret for this instruction manual belongs to Gree Electric Appliances Inc. of Zhuhai. Exception Clauses...

  • Page 4: Table Of Contents

    Contents 1 Safety Notice (Please be sure to abide) ......1 2 Product Introduction ............. 5 2.1 Overall Layout ................. 5 2.2 Operating Range ..............6 2.3 Standard Accessories ............. 6 3 Installation ................7 3.1 Installation Preparation ............7 3.2 Unit Installation..............

  • Page 5: Safety Notice (Please Be Sure To Abide)

    DC Inverter U-match Series Duct Type Unit 1 Safety Notice (Please be sure to abide) SPECIAL WARNING: Be sure to comply with national gas regulations. Do not pierce or burn. Do not use means to accelerate the defrosting process or to clean, other than those recommended by the manufacturer.
  • Page 6 DC Inverter U-match Series Duct Type Unit Before installing the air conditioner, please read the instruction manual. Before repairing the air conditioner, please read the instruction manual. The figures in this manual may be different with the material objects, please refer to the material objects for reference. PROHIBITED (1) The air conditioner should be grounded to avoid electric shock.
  • Page 7 DC Inverter U-match Series Duct Type Unit WARNING (7) If the installation space for air conditioner pipe is too small, adopt a protective measure to prevent the pipe from physical damage. (8) During installation, use the specialized accessories and components, otherwise water leakage, electric shock or fire hazard may occur.
  • Page 8 DC Inverter U-match Series Duct Type Unit NOTICE (1) Do not put a finger or other objects into the air inlet or air return grill. (2) Please adopt safety protection measures before touching the refrigerant pipe; otherwise your hands may be hurt. (3) Please arrange the drain pipe according to the instruction manual.

  • Page 9: Product Introduction

    DC Inverter U-match Series Duct Type Unit 2 Product Introduction 2.1 Overall Layout NOTICE: (1) The connection pipe, drain pipe, power cord, and duct for this unit should be prepared by the user. (2) The unit is standard equipped with rectangular duct.

  • Page 10: Operating Range

    DC Inverter U-match Series Duct Type Unit 2.2 Operating Range Cooling Heating Outdoor temperature DB(℃) -20~48 -20~24 Indoor temperature DB/WB(℃)(Maximum) 32/23 27/- 2.3 Standard Accessories Indoor Unit Accessories Name Appearance Q'ty Usage Wired To control the indoor unit Controller Nut with To fix the hook on the cabinet of Washer the unit.

  • Page 11: Installation

    DC Inverter U-match Series Duct 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 12 DC Inverter U-match Series Duct Type Unit Ceiling type Wall mounted type Floor standing type Area Area Area Weight(kg) Weight(kg) Weight(kg) 10.2 15.3 11.3 16.8 12.4 18.5 13.5 20.2 14.7 22.0 16.0 23.8 17.3 25.8 18.6 27.8 20.0 29.9 21.5 32.1 23.0 34.3...
  • Page 13 DC Inverter U-match Series Duct Type Unit 3.1.2 Selection of Installation Location WARNING ①. If the outdoor unit will be exposed in strong wind, it must be securely located, otherwise it may fall down. ②. Install the air conditioner at a place where the inclination is less than 5° . ③.
  • Page 14 DC Inverter U-match Series Duct Type Unit (3) Install at a place with good ventilation. Make sure the outdoor unit stays at a well-ventilated place with no obstacles nearby that may obstruct the air inlet and outlet. (4) The installation location should be able to withstand the weight and vibration of outdoor unit and allow the installation to be carried out safely.
  • Page 15 DC Inverter U-match Series Duct Type Unit (1) Indoor unit NOTICE Drilling of ceiling opening and installation of air conditioner must be performed by professionals! Unit: mm Dimensions Model GUD35P/A-T GUD35PS/A-T GUD50P/A-T 1060 1000 1068 GUD50PS/A-T GUD71P/A-T GUD71PS/A-T 1360 1300...
  • Page 16 DC Inverter U-match Series Duct Type Unit (2) Outdoor unit. GUD35W/NhA-T, GUD50W/NhA-T, GUD71W/NhA-T, GUD85W/NhA-T. GUD100W/NhA-T, GUD125W/NhA-T, GUD140W/NhA-T, GUD100W/NhA-X, GUD125W/NhA-X, GUD140W/NhA-X.
  • Page 17 DC Inverter U-match Series Duct Type Unit GUD160W/NhA-X. 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...
  • Page 18 DC Inverter U-match Series Duct Type Unit 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 19 DC Inverter U-match Series Duct Type Unit 2) When two or more outdoor units are to be installed side by side ≥400 ≥400 (mm) — ≥300 ≥300 ≥1000 A,B,C — ≥300 ≥300 ≥1000 ≥1000 A,B,C,E — ≥2000 — ≥2000 ≥1000 ＜H ＞H ≥300...
  • Page 20 DC Inverter U-match Series Duct Type Unit 3) When outdoor units are installed in rows ≥400 ≥400 (mm) ≤1/2H b≥250 ≤H 1/2H＜H b≥300 ＞H Prohibited 4) When outdoor units are installed one above another Unit: mm 2000...
  • Page 21 DC Inverter U-match Series Duct Type Unit (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).

  • Page 22: Unit Installation

    DC Inverter U-match Series Duct Type Unit 3.2 Unit Installation 3.2.1 Indoor Unit Installation 3.2.1.1 Preparation for Installing the Indoor Unit NOTICE ① Please tighten the nut and bolt to prevent the air conditioner from falling down. ② The unit might be loose if fixing the panel rack only. Be careful during installation. (1) Install the bolts to the ceiling at a place strong enough to hang the unit.
  • Page 23 DC Inverter U-match Series Duct Type Unit (4) Pass the unit hangers over the bolts installed to the ceiling and install the unit with the special nut. See the following figure. 3.2.1.2 Leveling The water level test must be done after installing the indoor unit to make the unit is horizontal, as shown below.
  • Page 24 DC Inverter U-match Series Duct 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 25 DC Inverter U-match Series Duct Type Unit Maximum Biggest drop Size of Fitting Pipe(in.) Item pipe between indoor and Model Liquid pipe Gas pipe length(m) outdoor units(m) GUD35P/A-T GUD35PS/A-T GUD35W/NhA-T GUD50P/A-T GUD50PS/A-T GUD50W/NhA-T GUD71P/A-T GUD71PS/A-T GUD71W/NhA-T GUD85P/A-T GUD85PS/A-T GUD85W/NhA-T GUD100PH/A-T...
  • Page 26 DC Inverter U-match Series Duct 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 27 DC Inverter U-match Series Duct Type Unit Dimensions for the making of oil return bend are as follows: B(mm) C(mm) 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. Remove burrs with the cut surface so that the chips do not enter the pipe.
  • Page 28 DC Inverter U-match Series Duct Type Unit (4). When bending the pipe, do not bend it excessively, otherwise it will get broken. As shown beside, use a sharp cutter to cut the heat insulating pipe and bend it after the pipe is exposed.
  • Page 29 DC Inverter U-match Series Duct Type Unit Pipe diameter (in.) Tightening torque (N· 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 30 DC Inverter U-match Series Duct Type Unit 3.2.3.5 Thermal Insulation of Pipe Joint (Only for indoor unit) Stick coupler heat insulation (large and small) to the place where connecting pipes. Coupler heat insulation Reference A (large) on the pipe Front outlet Reference A: Cover this portion with heat insulating material also without fail...
  • Page 31 DC Inverter U-match Series Duct Type Unit 3.2.4 Connection Pipe Vacuum Pumping and Leak Detection 3.2.4.1 Vacuum Pumping NOTICE Make sure the outlet of vacuum pump is away from fire source and is well-ventilated. (1) Remove the caps of the liquid valve, gas valve and also the service port. (2) Connect the hose at the low pressure side of the manifold valve 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.
  • Page 32 DC Inverter U-match Series Duct Type Unit Notice: For large-size units, there are maintenance ports for liquid valve and gas valve. During evacuation, you may connect the two hoses of the branch valve assembly to the maintenance ports to speed up the evacuation. 3.2.4.2 Leak Detection Methods The following leak detection methods are deemed acceptable for systems containing flammable refrigerants.
  • Page 33 DC Inverter U-match Series Duct Type Unit 3.2.5 Refrigerant Adding NOTICE Before and during operation, use an appropriate refrigerant leak detector to monitor the operation area and make sure the technicians can be well aware of any potential or actual leakage of inflammable gas. Make sure the leak detecting device is applicable to inflammable refrigerant.
  • Page 34 DC Inverter U-match Series Duct Type Unit 3.2.6.1 Indoor Side Drainage Pipe NOTICE Install the drain hose in accordance with the instructions in this installation manual and keep the area warm enough to prevent condensation. Problems with the piping may lead to water leaks. (1) Install the drain hose with downward gradient (1/50 to 1/100) and no risers or traps are used for the hose.
  • Page 35 DC Inverter U-match Series Duct Type Unit (7) When the unit is shipped from the factory, the drain port is defaulted to be the one on the left side (electric box side). (8) When using the drain port on the right side of the unit, reinstall the drain cap to the left side drain port.
  • Page 36 DC Inverter U-match Series Duct Type Unit 1) Drain hose should be placed on the ground and its end should not be immersed into water. The whole pipeline should be supported and fixed onto the wall. 2) Wind the insulating tape from bottom to top. 3) The whole pipeline should be wound with insulating tape and fixed onto the wall with saddles.
  • Page 37 (1) For the unit with the condensate pump, only one drain port at the side close to the electric box is prepared and only through it the drain hose can be connected. Item Drain pipe Model (outer dimension x wall thickness)(mm) GUD35P/A-T, GUD35PS/A-T GUD50P/A-T, GUD50PS/A-T GUD71P/A-T, GUD71PS/A-T GUD85P/A-T, GUD85PS/A-T Ф26×2.5 GUD100PH/A-T, GUD100PHS/A-T GUD125PH/A-T, GUD125PHS/A-T...
  • Page 38 DC Inverter U-match Series Duct Type Unit When multiple drain hoses are used, their installation should be performed as shown in the figure below. Notice: The specification of the selected merged drainage pipe shall be appropriate for the operation capacity of the unit. (1) Drain branch should be connected to the vertical or horizontal part of the main drain pipe.
  • Page 39 DC Inverter U-match Series Duct Type Unit 3-way connection of Connection of drain elbow Drainage pipe joint Connection of horizontal pipe 3.2.6.4 Check Drainage After piping work is finished, check if drainage flows smoothly. As shown in the figure, add approximately 1liter of water slowly into the drain pan and check drainage flow during COOL running.
  • Page 40 DC Inverter U-match Series Duct Type Unit Return Air Inlet Unit: mm Supply Air Outlet Return Air Inlet Item Model GUD35P/A-T, GUD35PS/A-T GUD50P/A-T, GUD50PS/A-T 1000 GUD71P/A-T, GUD71PS/A-T 1185 1300 GUD85P/A-T, GUD85PS/A-T GUD100PH/A-T, GUD100PHS/A-T GUD125PH/A-T, GUD125PHS/A-T GUD140PH/A-T, GUD140PHS/A-T 1150 1360 GUD160PH/A-T, GUD160PHS/A-T 3.2.7.2 Return Air Method...
  • Page 41 DC Inverter U-match Series Duct Type Unit (3) Connect the return duct to the return air inlet of indoor unit with rivet, and the other side shall be connected to the return air inlet. For the convenience of free height adjustment, canvas duct can be made and reinforced with iron wire to a folding shape.
  • Page 42 DC Inverter U-match Series Duct Type Unit (2) Install the round flange so that it can be connected to the fresh air duct, as is shown in the following figure. (3) The air duct and round flange duct shall be concealed and kept warm well. (4) The fresh air is the air after filtration.

  • Page 43: Electrical Installation

    DC Inverter U-match Series Duct Type Unit 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 DC Inverter U-match Series Duct Type Unit contact Gree’s local service center. ⑩. Wiring terminals should be connected firmly to the terminal board. Loose connection is forbidden. ⑪ . After the electrical installation is finished, please use wire clamps to secure the power cord, connection wire of indoor and outdoor units and the communication cords.
  • Page 45 DC Inverter U-match Series Duct Type Unit outdoor units) with at least 3mm contact gap. The 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 46 DC Inverter U-match Series Duct Type Unit to tighten up the terminal screw. (2) For strand wires (as shown below): 1) Use wire cutters to cut off the wire end and then peel away about 10mm of the insulation layer. 2) Use a screwdriver to unscrew the terminal screw on the terminal board.
  • Page 47 Indoor Unit L1 N1 Wired Controller breaker breaker Power:220V-240V~50Hz/208V-230V~60Hz Power:220V-240V~50Hz/208V-230V~60Hz Outdoor Unit Indoor Unit L1N1 Wired Controller breaker Power:220V-240V~50Hz/208V-230V~60Hz Power:220V-240V~50Hz/208V-230V~60Hz GUD35P/A-T+GUD35W/NhA-T, GUD35PS/A-T+GUD35W/NhA-T GUD50P/A-T+GUD50W/NhA-T, GUD50PS/A-T+GUD50W/NhA-T ①. Power cord 3×1.5mm² ②. Power cord 3×1.0mm² ③. Communication Cords 2×0.75mm ④. Communication Cords 2×0.75mm...
  • Page 48 DC Inverter U-match Series Duct Type Unit GUD71P/A-T+GUD71W/NhA-T, GUD71PS/A-T+GUD71W/NhA-T GUD85P/A-T+GUD85W/NhA-T, GUD85PS/A-T+GUD85W/NhA-T ①. Power cord 3×2.5mm² ②. Power cord 3×1.0mm² ③. Communication Cords 2×0.75mm² ④. Communication Cords 2×0.75mm² Single-phase Unit: GUD100W/NhA-T, GUD125W/NhA-T, GUD140W/NhA-T. Outdoor Unit Indoor Unit Wired breaker breaker Controller Power:220V-240V~50Hz/208V-230V~60Hz Power:220V-240V~50Hz/208V-230V~60Hz Outdoor Unit...
  • Page 49 DC Inverter U-match Series Duct Type Unit GUD140PH/A-T+GUD140W/NhA-T, GUD140PHS/A-T+GUD140W/NhA-T ①. Power cord 3×6.0mm² ②. Power cord 3×1.0mm² ③. Communication Cords 2×0.75mm² ④. Communication Cords 2×0.75mm² Three-phase unit: GUD100W/NhA-X, GUD125W/NhA-X, GUD140W/NhA-X. Outdoor Unit Indoor Unit L3 N Wired breaker breaker Controller Power:220V-240V~ 50Hz/208V-230V ~60Hz Power:380V-415V 3N ~ 50Hz/60Hz Outdoor Unit...
  • Page 50 DC Inverter U-match Series Duct Type Unit Three-phase unit: GUD160W/NhA-X. Outdoor Unit Indoor Unit Wired Controller breaker breaker Power:380V-415V 3N ~ 50Hz/60Hz Power:220V-240V~ 50Hz/208V-230V ~60Hz Outdoor Unit Indoor Unit Wired Controller breaker Power:220V-240V~50Hz/208V-230V~60Hz Power:380V-415V 3N ~ 50Hz/60Hz GUD160PH/A-T +GUD160W/NhA-X, GUD160PHS/A-T +GUD160W/NhA-X ①.
  • Page 51 DC Inverter U-match Series Duct Type Unit (5) Electrical wiring of indoor unit and 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 52 DC Inverter U-match Series Duct Type Unit Only for GUD160PH/A-T, GUD160PHS/A-T. 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 53 DC Inverter U-match Series Duct 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. b) Wire routing of unified power supply for single phase.
  • Page 54 DC Inverter U-match Series Duct Type Unit The communication wire gets in from the upper hole The power cords of outdoor unit and indoor unit get in from the lower hole. Three-phase:GUD100W/NhA-X,GUD125W/NhA-X,GUD140W/NhA-X, GUD160W/NhA-X. a) Wire routing of separated power supply for three phase.
  • Page 55 DC Inverter U-match Series Duct Type Unit 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. b) Wire routing of unified power supply for three-phase.
  • Page 56 DC Inverter U-match Series Duct Type Unit 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. Power cord should be secured along with the right side plate and fixed to the hook with a wire clamp so as to avoid contacting the pipeline.

  • Page 57: Check After Installation

    DC Inverter U-match Series Duct 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 58: Operation Specification

    DC Inverter U-match Series Duct Type Unit (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. Wait until the electric heating belt is heated enough, and then restart the air conditioner.

  • Page 59: Maintenance

    DC Inverter U-match Series Duct 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 avoid...
  • Page 60 DC Inverter U-match Series Duct Type Unit (2) The following situations are not operation failures. Problem Time of occurrence Cause If the unit is running under Mist comes from the air high humidity, the wet air in During operation. conditioner. the room will be quickly cooled down.

  • Page 61: Error Code

    Notice: Check the above items and adopt the corresponding corrective measures. If the air conditioner continues to function poorly, please stop the air conditioner immediately and contact Gree’s authorized local service center. Ask our professional service staff to chec k and repair the unit.
  • Page 62 DC Inverter U-match Series Duct 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...

  • Page 63: Unit Maintenance

    DC Inverter U-match Series Duct Type Unit 5.3 Unit Maintenance Warning ①. Only professionals are allowed to carry on daily maintenance. ②. Before contacting any wire, make sure power is cut off. ③. Do not let any inflammable objects near the unit. ④.
  • Page 64 “ON” status before 8h of operation, to preheat the crankcase of outdoor compressor; (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;...

  • Page 65: Notice On Maintenance

    DC Inverter U-match Series Duct 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 66 DC Inverter U-match Series Duct Type Unit hand. Have a dry powder or CO2 fire extinguisher adjacent to the charging area. 5.4.1.6 No Ignition Sources No person carrying out work in relation to a refrigeration system which involves exposing any pipe work that contains or has contained flammable refrigerant shall use any sources of ignition in such a manner that it may lead to the risk of fire or explosion.
  • Page 67 DC Inverter U-match Series Duct Type Unit (5) 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.
  • Page 68 DC Inverter U-match Series Duct Type Unit Ensure that apparatus is mounted securely. Ensure that seals or sealing materials have not degraded such 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. Notice：The use of silicon sealant may inhibit the effectiveness of some types of leak detection equipment.
  • Page 69 DC Inverter U-match Series Duct Type Unit 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. The system shall be “flushed”...
  • Page 70 DC Inverter U-match Series Duct Type Unit 5.4.8 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.

  • Page 71: 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.

This manual is also suitable for:

Dc inverter u-match seriesGud50p/a-tGud71p/a-tGud85p/a-tGud100ph/a-tGud125ph/a-t ... Show all

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