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- Page 1 <ORIGINAL> Packaged Air-Conditioners INDOOR UNIT SEZ-M25,M35,M50,M60,M71DAL INSTALLATION MANUAL FOR INSTALLER English For safe and correct use, please read this installation manual thoroughly before installing the air-conditioner unit.
- Page 2 [Fig. 3-1-1] [Fig. 3-1-2] (Unit: mm) (Viewed from the direction of the arrow A) Ⓔ Ⓐ 100~200 Ⓓ Ⓘ Ⓗ Ⓖ 50~150 Ⓕ [Fig. 3-1-3] [Fig. 3-1-4] (Viewed from the direction of the arrow B) Ⓔ Ⓐ 100~200 Ⓘ Ⓖ Ⓗ...
- Page 3 [Fig. 4-1] Ⓐ Ⓐ Center of gravity [Fig. 5-1] [Fig. 5-2] Ⓒ Ⓓ Ⓐ Ⓓ Ⓑ Ⓒ Ⓔ Ⓒ Nuts (field supply) Ⓓ Washers (accessory) Ⓐ Unit body Ⓔ M10 hanging bolt (field supply) Ⓑ Lifting machine...
- Page 4 [Fig. 6-1] ØB ⓐ ØA Model ⓑ SEZ-M25, 35 9.52 6.35 SEZ-M50 12.7 6.35 SEZ-M60 15.88 6.35 ⓐ Indoor unit SEZ-M71 15.88 9.52 ⓑ Outdoor unit [Fig. 6-3] [Fig. 6-4] [Fig. 6-5] ⓑ ⓒ ⓑ ⓐ ⓐ ⓐ ⓓ ⓔ ⓕ...
- Page 5 [Fig. 7-1] Ⓕ Ⓐ Air inlet Ⓔ Ⓑ Air outlet Ⓒ Access door Ⓓ Ceiling surface Ⓔ Canvas duct Ⓓ Ⓒ Ⓕ Air filter Ⓖ Inlet grille Ⓑ Ⓐ Ⓖ [Fig. 8-1] Ⓐ Indoor unit Ⓑ Outdoor unit Ⓐ Ⓒ Signal receiving unit Ⓓ...
- Page 6 [Fig. 8-3] Ⓐ Indoor terminal block Ⓐ Indoor terminal block ③ Outdoor terminal block Ⓕ Indoor controller ② Ⓑ Earth wire (green/yellow) ④ Always install an earth wire (1-core 1.5 CN90 Ⓑ Earth wire (green/yellow) board ) longer than other cables Ⓒ...
- Page 7 [Fig. 8-10] Ⓐ Ⓕ Ⓑ Ⓐ Signal receiving unit external Ⓑ Center of Switch box Ⓒ Switch box Ⓓ Installation pitch Ⓔ Ⓔ 6.5 mm (1/4 inch) Ⓖ Ⓕ 70 mm (2 - 3/4 inch) Ⓒ Ⓖ 83.5 ± 0.4 mm (3 - 9/32 inch) Ⓗ...
- Page 8 [Fig. 8-16] Ⓐ Insert the minus screwdriver toward the arrow pointed and wrench it to remove the cover. A flat screwdriver whose width of blade is between 4 and 7 mm (5/32 - 9/32 inch) must be used. Ⓓ [Fig. 8-17] Ⓒ...
- Page 9 [Fig. 9-1] TEST RUN ON/OFF TEMP Ⓐ TEST RUN button Ⓑ MODE button AUTO STOP Ⓒ Ⓒ FAN button MODE VANE AUTO START Ⓓ VANE button Ⓑ Ⓓ CHECK LOUVER TEST RUN Ⓐ RESET CLOCK 10.1 [Fig. 10-1] Ⓑ Ⓔ Ⓐ...
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Page 10: Table Of Contents
- It may also be in violation of applicable laws. • Be sure to use the part provided or specified parts for the installation work. - MITSUBISHI ELECTRIC CORPORATION cannot be held responsible for The use of defective parts could cause an injury or leakage of water due to malfunctions or accidents resulting from the use of the wrong type of a fire, an electric shock, the unit falling, etc. - Page 11 1. Safety precautions • This indoor unit should be installed in a room which is equal to or larger • When performing brazing work, be sure to ventilate the room sufficiently. than the floor space specified in the outdoor unit installation manual. Refer Make sure that there are no hazardous or flammable materials nearby.
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Page 12: Selecting The Installation Location
2. Selecting the installation location 2.1. Indoor unit 2.2. Outdoor unit • Where it is not exposed to strong wind. • Where airflow is not blocked. • Where airflow is good and dustless. • Where cool air spreads over the entire room. •... -
Page 13: Fixing Hanging Bolts
4. Fixing hanging bolts 4.1. Fixing hanging bolts • If necessary, reinforce the hanging bolts with anti-quake supporting members as countermeasures against earthquakes. [Fig. 4-1] (P.3) * Use M10 for hanging bolts and anti-quake supporting members (field supply). Ⓐ Center of gravity ①... -
Page 14: Refrigerant Piping Work
6. Refrigerant piping work 6.1. Refrigerant pipe 6.2.4. Flaring work [Fig. 6-6] (P.4) [Fig. 6-1] (P.4) ⓐ Flaring tool ⓐ Indoor unit ⓑ Die ⓑ Outdoor unit ⓒ Copper tube Refer to the Instruction Manual that came with the outdoor unit for the restrictions ⓓ... -
Page 15: Duct Work
6. Refrigerant piping work 1. Remove and discard the rubber bung which is inserted in the end of the unit piping. 2. Flare the end of the site refrigerant piping. Pipe length : Pipe length exceeding 7 m 3. Pull out the thermal insulation on the site refrigerant piping and replace the 7 m maximum Charge the prescribed insulation in its original position. -
Page 16: Electrical Work
8. Electrical work 8.1. Power supply • Perform wiring as shown in [Fig. 8-3] (P.6). (Procure the cable locally.) Electrical specification Input capacity Main Switch/Fuse (A) Make sure to use cables of the correct polarity only. Power supply SEZ-M25 SEZ-M35 SEZ-M50 SEZ-M60 SEZ-M71 •... - Page 17 8. Electrical work For pair number settings, the following 4 patters (A-D) are available. Indoor controller circuit board side Pair number setting pattern Pair number on remote controller side Point where the daisy wire is disconnected Not disconnected J41 disconnected J42 disconnected J41 and J42 disconnected 2.
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Page 18: Test Run
8. Electrical work 8.4. Function settings (Function selection via the ④ Selecting the setting number Use the Ⓒ and Ⓓ buttons to change the external static pressure setting to be remote controller) used. 8.4.1 Function setting on the unit (Selecting the unit functions) Direct the wireless remote controller toward the sensor of the indoor unit and 1) Changing the external static pressure setting press the Hour button Ⓐ. - Page 19 9. Test run 9.2. Test run ③ Press the MODE button Ⓑ to activate COOL mode, then check whether cool air is blown out from the unit. 9.2.1. Using wireless remote controller ④ Press the MODE button Ⓑ to activate HEAT mode, then check whether warm air [Fig.
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Page 20: Maintenance
9. Test run • If the unit cannot be operated properly after the above test run has been performed, refer to the following table to remove the cause. Symptom Cause Wired remote controller LED 1, 2 (PCB in outdoor unit) •... - Page 22 This product is designed and intended for use in the residential, commercial and light-industrial environment. The product at hand is • Low Voltage Directive 2014/35/EU based on the following • Electromagnetic Compatibility Directive EU regulations: 2014/30/EU • Energy-related Products Directive 2009/125/EC •...
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