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Summary of Contents for Midea MI-22Q4/DHN1-A3
- Page 1 Installation and Operation Manual Compact 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 attached to the product. Make sure that there are no external forces Accessories..................3 acting on the terminals and wires. Improper wiring and installation 1. - 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 Name Appearance Installation Manual Installation board Casing Φ30 Casing Φ20 Cable tie Insulation casing for copper pipe Insulation casing for water discharge piping Ring clamp for water discharge pipe Tie for water discharge piping Soft flexible hose for water discharge Brass nut... -
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 640 mm x 640 mm square holes into the ceiling based on the layout of Original concrete slab structure the installation board (accessory 2). See Figure 3.5. See Figure 2.1 for maintenance access. The centre of the ceiling opening should match the centre of the body of the ...
- Page 8 Drainage pipe Φ25(OD) Body Gas pipe Hook Φ12.7(OD) Body Hook hole Ceiling Central hole Fixing hole Liquid pipe Φ6.35(OD) Installation paper board Panel Screws M5x20 (Accessory for the panel) L=30～40 Body Ceiling Figure 3.8 Figure 3.11 Caution • All the figures in this manual are for illustration purposes only. The actual air conditioner you purchased may not have the same appearance and functions as those listed in these figures.
- Page 9 3.3.2 Panel installation Align the panel with the unit body in the direction indicated by Caution the arrow (see Figure 3.14). • The plastic cover plate protruding from the swing motor must be When mounting, secure the two fixed steel ropes on the unit embedded within the concave area of the sealing plate.
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Page 10: Refrigerant Piping Installation
Normal wrench Torque wrench First put the Pipe socket cap casing into the Protective unit body lead, casing and then connect Pipe fittings Figure 4.1 to the three plugs. Connector Slot the refrigerant piping into the brass nut (accessory 11), and expand the ... -
Page 11: Water Discharge Piping Installation
4.6 Heat Insulation Treatment for Gas-Liquid Piping Connections that the height of the water discharge pipe should be within 600 mm away from the base of the drain pan. Otherwise, there will be excessive water for the Indoor Unit flow when the operation stops. See Figure 5.2. The heat insulation treatment is carried out on the piping at the gas and ... - Page 12 • Choose electrical wiring that conforms to the corresponding electrical Refer to Tables 6.1 and 6.2 for the specifications of the power cord and requirements. communication wire. A wiring capacity that is too small will cause the electrical • Connect to the power supply only after all the wiring and connection works have wiring to become too hot, and lead to accidents when the unit burns and been completed, and carefully checked to be correct.
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Page 13: On-Site Configuration
2) For a unidirectional communication mode: The communication wiring between the indoor and outdoor units should connect one unit after another in a daisy chain from the outdoor unit to the Use 1 wired controller to control 1 indoor unit (see Figure 6.9). final indoor unit, and the shielded layer must be properly grounded, and a build-out resistor must be added to the last indoor unit to enhance the stability of the communication system (see Figure 6.6). - Page 14 Caution In heating mode fan does not run when indoor heat • The capacity DIP switches have been configured before delivery. Only a exchanger mid-point temperature is 15°C or below professional maintenance personnel should change these settings. In heating mode fan does not run when indoor heat 7.2 Address Settings exchanger mid-point temperature is 20°C or below When this indoor unit is connected to the outdoor unit, the outdoor unit will...
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Page 15: Test Run
8. Test Run be disposed of carefully to avoid injury. • Do not attempt to inspect or repair this unit yourself. This unit 8.1 Things to Note Before Test Run should only be serviced and maintained by a professional air ... -
Page 16: Part Names
9. Part Names Caution • Only use the air conditioner for its intended purpose. This unit The figure shown above is for reference only and may be slightly should not be used to provide refrigeration or cooling for food, different from the actual product. plants, animals, machinery, equipment or art. -
Page 17: The Explain Of The Display Panel
10. The Explain Of The Display Panel The display panel is shown in Figure 10.1 . operation timer def./fan alarm Operation Digital LED Infrared signal Anti-cold air / Timer indicator display receiver window defrosting indicator ALARM Check button indicator Figure 10.1 Table: Display panel output under normal operating conditions. -
Page 18: Adjusting Air Flow Direction
Avoid too much outdoor air coming into air-conditioned spaces. Adjust the air direction up and down a. Auto-swing: Press SWING for the louver to swing up and down. Close doors and windows. b. Manual swing: Adjust the louver to improve the cooling or heating effect. -
Page 19: Symptoms That Are Not Faults
b. Clean the air filter and indoor unit casing. c. Refer to “Cleaning the air filter" for details. Install cleaned air filters back in their original positions. d. Turn off the unit with the ON/OFF button on the remote controller, and then unplug it. Caution •... -
Page 20: Troubleshooting
15. Troubleshooting a. A safety device such as a fuse or circuit breaker frequently blows/trips. 15.1 General b. An object or water enters the unit. Sections 15.2 and 15.3 describe some initial troubleshooting c. Water is leaking from the unit. steps that can be taken when an error occurs. - Page 21 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 22 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 the following table 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 16126000002987 V.G...
- Page 25 更改记录表（仅做说明用，不做菲林) 印刷技术要求 材质 双胶纸80g 规格 210*297(双面) 颜色 黑白 其他 日期 版本号 更改页 更改内容 更改人 2021.01.04 陈海清 说明书材质更改为双胶纸80克，说明书内容不变，图号不升级。...
- Page 26 更改说明（此页不作菲林，供更改前后核对和检查） A版本升级到B版本：更新整本说明书 B——C改动： P10增加线径说明。 C——D改动： P3附件栏修改束紧带和铜螺母数量。 D——E改动： P3附件栏修改束紧带数量。 E——F改动： 删除X1X2屏蔽层接地描述。 F--G改动： P10表6.3 Cable for fixed wiring中的"and"为"to"，图号升级。 P14 有内容隐藏（红色字体） Do not dispose of this product as unsorted waste. It must be separately collected and processed. Ensure that all applicable legislation regarding the disposal of refrigerant, oil and other materials is adhered to.
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