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Table of Contents
Related Manuals for Midea MI2-28Q4DHN1
Summary of Contents for Midea MI2-28Q4DHN1
- Page 1 Installation and Operation Manual Four-way Cassette The 2nd generation DC VRF indoor unit Original instructions Thank you very much for purchasing our air conditioner. Before using your air conditioner, please read this manual carefully and keep it for future reference.
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Page 3: Table Of Contents
Contents • Use only electrical cables that fulfil the specifications. All wiring on Installation Manual................1 site must be carried out in accordance with the connection diagram Accessories..................3 attached to the product. Make sure that there are no external forces 1. Before Installation ................4 acting on the terminals and wires. - Page 4 Caution • Install the water discharge piping according to the steps described in this manual, and make sure that the water discharge is smooth, and the piping is properly insulated to prevent condensation. Improper installation of the water discharge piping may lead to water leakage, and damage the indoor furniture.
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Page 5: Accessories
Accessories Verify that the air conditioner includes the following accessories. Code Installation Manual Washer Installation board M6 screw Insulation casing for copper pipe Foam (250x250x8) Foam (60x100x5) Insulation casing for water discharge piping Ring clamp for water discharge pipe Tightening band Soft flexible hose for water discharge Brass nut Protection casing... -
Page 6: Before Installation
1. Before Installation 1. Determine the route to move the unit to the installation site. 2. First unseal and unpack the unit. Then, hold the seats of the hanger (4 pcs) to move the unit. Refrain from exerting force on other parts of the unit, especially the refrigerant piping, water discharge piping, and the plastic parts. - Page 7 1. Drill 910x910mm square holes into the ceiling based on the layout of the Original concrete slab structure installation board (accessory 4). See Figure 3.5. The centre of the ceiling opening should match the centre of the body of the ...
- Page 8 Refrigerant piping vent (gas side D) Air conditioner body Refrigerant piping vent (liquid side C) ϕ32 (outer diameter of water discharge pipe) Screw M6x12 (accessory) Installation board Figure 3.8 Caution • Before you install the indoor unit, make sure that you remove the buffers used for transportation between the fan and the Top view pipe socket (see Figure 3.9).
- Page 9 Drain pan hook Panel hook Piping side Drain side 45° Figure 3.13 Swing motor Hook Caution screw Phillips • Do not place the panel such that it faces downwards or leans screwdriver against the wall. Do not place it on a protruding object either. •...
- Page 10 Distribution duct No gap allowed Distribution duct Distribution duct Figure 3.18 Φ75 The side with EXV cannot be connected with distribution duct. 1. First loosen the nut Distribution duct Fresh air Figure 3.22 2. Adjust the nut Size (mm) 2.8~8.0kW models 9.0~14.0kW models Figure 3.19 3.3.4 First hang the air inlet grille on the panel, and then connect the leads of the swing motor and display box to the...
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Page 11: Refrigerant Piping Installation
4. Refrigerant Piping Installation Before the socket cap is installed on the pipe socket, apply some refrigerant oil on the socket (both inside and outside), and then rotate it three or four 4.1 Length and Drop Height Requirements for the Piping times before you tighten the cap. -
Page 12: Water Discharge Piping Installation
5. Water Discharge Piping Installation 5.2 Water Discharge Test 5.1. Water Discharge Piping Installation for Indoor Unit Before the test, make sure that the water discharge pipeline is smooth, and check that each connection is sealed properly. 1. Use PVC pipes for the water discharge pipes (outer diameter: 37~39 mm, Conduct the water discharge test in the new room before the ceiling is paved. - Page 13 6.1 Power Cord Connection Refer to Tables 6.1 and 6.2 for the specifications of the power cord and communication wire. A wiring capacity that is too small will Use a dedicated power supply for the indoor unit that is different ...
- Page 14 6.3 Communication Wiring Indoor unit 2 Indoor unit 1 Indoor unit n (n<=16) Use only shielded wires for the communication wiring. Any other type of wires may produce a signal interference that will cause the units to malfunction. Do not carry out electrical works like welding with the power on. ...
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Page 15: On-Site Configuration
6.5 Panel Wiring 7.3 DIP Switch Settings on Main Board Refer to the panel instructions to connect the docking terminals of the 0/1 definition of each dial code switch: display board and the swing motor. Use the protection casing (accessory 14) to cover and protect the means 0 means 1 terminal, and bind it firmly with tightening band (accessory 11). -
Page 16: Test Run
Auto restart function enabled Once the installation is completed, please keep the manual properly for future reference. When this air conditioner is handed over to other users, make sure that the manual is included with the handover. Auto restart function disabled Warning •... -
Page 17: Part Names
• Do not use the unit until the qualified technician instructs you that it is safe Do not dispose of this product as unsorted • waste. It must be separately collected to do so. and processed. Ensure that all • Do not place appliances that produce naked flames in the path of the airflow applicable legislation regarding the from the unit. -
Page 18: Air Conditioner Operations And Performance
Infrared signal receiving window Digital display ALARM Timer Anti-cold air / indicator defrosting indicator Operation indicator Figure 10.2 Table: Display panel output under normal operating conditions. Display output Digital display panels Unit state Unit state Digital display Operation indicator Standby flashes slowly Shutting-down All indicators off... -
Page 19: Adjusting Air Flow Direction
Method for cleaning the air filter a. The air filter can prevent the dust or other particles from entering the unit. If the filter is blocked, the unit will not work well. Clean the filter every two weeks when you use it regularly. b. -
Page 20: Symptoms That Are Not Faults
14. Symptoms That Are Not Faults The following symptoms may be experienced during the normal operation of the unit and are not considered faults. Note: If you are not sure whether a fault has occurred, contact your supplier or service engineer immediately. - Page 21 15.2 Unit troubleshooting A power cut has occurred (the power to the Wait for the power to come back on. premises has been cut-off). Power on the unit. This indoor unit forms part of an air conditioning system that has multiple indoor units that are all connected.
- Page 22 15.3 Remote controller troubleshooting Warning: Certain troubleshooting steps that a professional technician may perform when investigating an error are described in this owner's manual for reference only. Do not attempt to undertake these steps yourself – arrange for a professional technician to investigate the problem. If any of the following errors occur, power the unit off and contact a professional technician immediately.
- Page 23 15.4 Error codes With the exception of a mode conflict error, contact your supplier or service engineer if any of the error codes listed in Table 7-3 are displayed on the unit's display panel. If the mode conflict error is displayed and persists, contact your supplier or service engineer. These errors should only be investigated by a professional technician.
- Page 24 16126000002969 V.G...
- Page 25 更改说明（此页不作菲林，供更改前后核对和检查） 技术要求：双胶纸80克，黑白印刷，A4 B版本升级到C版本 更新整本说明书 C版本升级到D版本 P12添加线径说明 D版本升级到E版本 P12页删除图6.10 X1\X2接地 P12页6.3所有屏蔽线接地要求转移到6.3.1 E版本升级到F版本 P11表6.3 Cable for fixed wiring中的"and"为"to"，图号升级。 P16室内机制热温度增加下限。 V.F-V.G 更改材质为80g，其余不变...