INSTALLATION MANUAL Four-way Cassette Type 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.
CONTENTS PAGE Install according to this installation instructions strictly. If installation is defective, it will cause water leakage, electrical shock and fire. 1. PRECAUTIONS...................................................................... 1 2. INSTALLATION INFORMATION ................................................ 2 3. ATTACHED FITTINGS ...................................................... 3 4. INSPECTING AND HANDLING THE UNIT........................ 4 5. INDOOR UNIT INSTALLATION..............
If the refrigerant leaks during installation, ventilate the area immediately. Toxic gas may be produced if the refrigerant comes into the place contacting with fire. The temperature of refrigerant circuit will be high, please keep the interconnection cable away from the copper tube. After completing the installation work, check that the refrigerant does not leak.
3. ATTACHED FITTINGS Please check whether the following fittings are of full scope. If there are some spare fittings , please restore them carefully. NAME SHAPE QUANTITY Installation Fittings 1. Installation paper board (on some models) 1 Tubing & Fittings 2. Soundproof / insulation sheath (on some models) 1 3. Out-let pipe sheath (on some models) 1 4. Out-let pipe clasp (on some models) 1 5. Drain joint(on some models) 1 6. Seal ring(on some models) 1 7. Remote controller 1 8.
4. INSPECTING AND HANDLING THE UNIT At delivery, the package should be checked and any damage should be reported immediately to the service agent. When handling the unit, take into account the following: 1 Fragile, handle the unit with care. Keep the unit upright in order to avoid compressor damage. 2 Choose on before hand the path along which the unit is to be brought in. 3 Move this unit as originally package as possible.
5.2 Install the main body The existing ceiling (to be horizontal) 1 Cut a quadrangular hole of 880x880mm in the ceiling according to the shape of the installation paper board. (Refer to Fig.5-2) The center of the hole should be at the same position of that of the air conditioner body. Determine the lengths and outlets of the connecting pipe, drainpipe and cables. Fig.5-4 To balance the ceiling and to avoid vibration, please enforce the ceiling when necessary. 2 Fig.
3 Install the panel 6 Align the swing motor on the panel to the tubing joints of the body properly. ( Refer to Fig.5-10) Fix hooks of the panel at swing motor and its opposite sides to the hooks of corresponding water receiver. ( Refer to Fig.5-10.1) Then hang the other two panel hooks onto corresponding hangers of the body. ( Refer to Fig.5-10.2) Relocate the installation cover. Fasten the rope of installation cover on the bolt of the installation cover. (Refer to Fig.
<500mm 1-1.5m Lean over 1/50 NOTE All the pictures in this manual are for explanation purpose only. They may be slightly different from the air conditioner you purchased(depend on model).The actual shape shall prevail. Pump-pipe clasp (the fittings) Fig.5-15 Test cap Fig.5-16 Drainage test Check whether the drainpipe is unhindered. New built house should have this test done before paving the ceiling. The unit with pump. 1 Remove the test cover, and stow about 2000ml water to the water pan.
5.4 Install the distribution duct Conditioned air can be distributes by means of a distribution duct. MODLE (18-60) Ø75mm 80mm Fig.5-17 NOTE model 18 to 30 model 36 to 60 Series A=160mm; Series B=75mm Series A=160mm; Series B=95mm In case of two duct connection In case of one duct connection The air volume in duct is around 300-360m3/h for model 18 to 30 unit. The air volume in one duct is around 200-260m3/h for model 18 to 30 unit.
6. OUTDOOR UNIT INSTALLATION 6.1 Installation Place The outdoor unit should be installed in the location that meets the following requiements: NOTE All the pictures in this manual are for explanation purpose only. They may be slightly different from the air conditioner you purchased(depend on model).The actual shape shall prevail. There is enough room for installation and maintenance. The air outlet and the air inlet are not impeded, and can not be reached by strong wind. 6.
Table 6-1 MODEL 18 mm A B C D E F H 760 530 290 315 270 285 590 Fig.6-2 810 549 325 350 305 310 558 Fig.6-2 845 560 335 360 312 320 700 Fig.6-2 845 560 335 360 312 320 700 Fig.6-2 900 590 333 355 302 315 860 Fig.6-2 945 640 405 448 385 395 810 Fig.6-2 945 640 405 448 385 395 810 Fig.6-2 900 590 333 355 302 315 860 Fig.6-2 990 624 366 396 340 345 965 Fig.6-2 938 634 404 448 368 392 1369 Fig.
Air inlet modification (Wall or obstacle) To change air inlet is only necessary to interchange the indicated panels position. Both panels use screws to be fixed to unit chassis. >30cm >30cm Air inlet Air inlet Fig.6-10 3. Centrifugal fan outdoor unit a) In case that suspending in the ceiling Change Panel Fig6-13 To change air outlet is necessary to interchange panels too. Fan outlet panel is attached to fan structure, which must be mounted as follow. Fig.
Table 6-5 Fix with bolt mm Model Unit B C 18~24 1120 720 30~36 1338 820 48 1338 820 Suspended unit Fig.6-15 1. Suspend the unit as the drawing indicates. 2. Ensure that ceiling can resist the Outdoor unit weight indicated in specification label plate. NOTE Sling Bolt All the pictures in this manual are for explanation purpose only. They may be slightly different from the air conditioner you purchased(depend on model).The actual shape shall prevail.
Outdoor unit Indoor unit L1 L A The line branch pipe L2 Fig.7-1 Note: All used branch pipe must be produced by Midea,otherweise it causes malfunction. The indoor units should be installed equivalently at the both side of the U type branch pipe. 7.2 Vacuum with vacuum pump 7.3 Refrigerant amount to be added 1) Use the vacuum pump which vacuum level lower than -0.1MPa and the air discharge capacity above 40L/min.
8. INSTALL THE CONNECTING PIPE Check whether the height drop between the indoor unit and outdoor unit, the length of refrigerant pipe, and the number of the bends meet the following requirements: 8.1 The Procedure of Connecting Pipes 1 Drill a hole in the wall (suitable just for the size of the wall conduit), then set on the fittings such as the wall conduit and its cover. 2 Bind the connecting pipe and the cables together tightly with binding tapes.
2 Connect the indoor unit at first, then the outdoor unit. Table 8-3 Tightening torque N.M (Turn clockwise to close) Stop Valve size Bend the tubing in proper way. Do not harm to them. Ø6.4 Bend the pipe with thumb Ø9.5 Ø12.7 Ø15.9 min-radius 100mm 5.4～6.6 Hexagonal wrench 4 mm 8.1～9.9 Ø25.4 Maintenance nut 13.5～16.5 18～22 Hexagonal 13.5～16.5 wrench 6 mm Ø22.2 Fig.8-2 The bending angle should not exceed 90.
Manifold valve Multi-meter Pressure meter Refrigerant containers shall be opened slowly. Always use protective gloves and protect your eyes when charging refrigerant. -76 cmHg Hi-lever Lo-lever Charge hose Charge hose Vac uum pump 9. CONNECT THE DRAIN PIPE Lo-lever Fig.8-7 Install the drainpipe of the indoor unit 8.2. Refrigerant pipe installation Allowed Lenght and Drop of Pipes You can use a polyethylene tube as the drainpipe (out-dia.37-39mm, in-dia.32mm).
Install the drain joint of the outdoor unit Fit the seal into the drain joint, then insert the drain joint into the base pan hole of outdoor, rotate 90° to securely assemble them. Connect the drain joint with an extension drain hose (Locally purchased), in case of the condensate draining off the outdoor unit during the heating mode.
11. TEST OPERATION Centrifugal fan outdoor unit 1 The test operation must be carried out after the entire installation has been completed. 2 Please confirm the following points before the test operation: The indoor unit and outdoor unit are installed properly. Tubing and wiring are correctly completed. The refrigerant pipe system is leakage-checked. The drainage is unimpeded. The heating insulation works well. Protection Board The ground wiring is connected correctly. Fig.
The Specification of Power(indoor power supply) Table 10-1 18 24 PHASE 1Phase FREQUENCY AND VOLT MODEL POWER CIRCUIT BREAKER/FUSE(A) 30~36 42~48 60 1Phase 1Phase 1Phase 1Phase 208-240 V 208-2 40V 208-2 40V 208-2 40V 208-2 40V 20/16 40/25 50/30 60/45 60/50 Table 10-2 30~36 42~60 30~36 42~60 PHASE 3Phase 3Phase 3Phase 3Phase FREQUENCY AND VOLT 380-420 V 380-420 V 208-2 40V 208-2 40V 25/20 25/20 40/25 45/35 MODEL POWER CIRCUIT BREAKER/FUSE(A) The Specification of
The Specification of Power(independence power supply) Table 10-5 18 24 30~36 42~48 60 PHASE POWER (indoor) FREQUENCY AND VOLT 1Phase 1Phase 1Phase 1Phase 1Phase 208-240 V 208-2 40V 208-2 40V 208-2 40V 208-2 40V CIRCUIT BREAKER/FUSE(A) 20/16 20/16 20/16 20/16 20/16 PHASE POWER (outdoor) FREQUENCY AND VOLT 1Phase 1Phase 1Phase 1Phase 1Phase 208-240 V 208-2 40V 208-2 40V 208-2 40V 208-2 40V CIRCUIT BREAKER/FUSE(A) 20/16 40/25 50/30 60/45 60/50 MODEL Table 10-6 30~36 4
CAUTION The power supply is included in the power supply above mentioned can be applied to the table. Wiring figure Fig.10-3 Power supply Switch/Fuse (Available locally) Power wiring (indoor) Power linking wiring (Outdoor) Indoor Unit Outdoor Unit Ground wiring Strong elec-signal link wiring Ground wiring Weak elec-signal link wiring Ground the air conditioner properly in case to affect its anti-interference function Fig.
Fig.10-6 Power supply Power supply Switch/Fuse (Available locally) Power wiring (indoor) Power linking wiring (Outdoor) Indoor Unit Out door Unit Ground wiring Weak elec-signal link wiring Ground wiring Ground the air conditioner properly in case to affect its anti-interference function Fig.
Fig.10-9 (the figure is for the unit with the new fan function) the power of new fan motor is less than or equal to 200W INDOOR UNIT NEW FAN 220-240V~ NEW FAN MOTOR Fig.10-10 (the figure is for the unit with the new fan function) the power of new fan motor is more than 200W INDOOR UNIT Fuse NEW FAN L 220-240V~ NEW FAN MOTOR N DC RELAY/ AC CONTACTOR CAUTION The wiring must be operated according to the wiring scheme,or it damages the unit.
QSQ4I-016AEN The design and specifications are subject to change without prior notice for product improvement.Consult with the sales agency or manufacturer for details.
