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 Page 22 

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Wiring

Settings for external static pressure can be 
achieved by using the airflow automatic 
adjustment function.

Airflow automatic adjustment is the volume of 
blow-off air that has been automatically 
adjusted to the rated quantity.

1. Make sure the test run is done with a dry coil.
    If the coil is not dry, run the unit for 2 hours 
    with fan only to dry the coil.
2. Check if the power supply wiring to the air 
    conditioning unit is completed along with the 
    duct installation.
    If a closing damper is installed in the air 
    conditioning unit, make sure that it is open.
    Also check if the air filter is properly attached 
    into the air passage on the air suction side of 
    the air conditioning unit.
3. If there is more than one air inlet and outlet, 
    adjust the dampers so that the airflow rate of 
    each air inlet and outlet is conform with the 
    designed airflow rate. Make sure the air 
    conditioning unit is in fan operation mode.
    Press and set the airflow adjustment button 
    on the remote controller to change the 
    airflow rate to H or L.

4. Setting the airflow automatic adjustment 
    settings. When the air conditioning unit is 
    off ,perform the next steps:

-  Press the button  “COPY”  long,
-  Press the button “+” or  “-” to select the AF,

-  Press the button “CONFIRM” .Then the air 
   conditioning unit will start the fan 
   operation for airflow automatic adjustment.

The ON mark will flash during 
the fan operation for airflow 
automatic adjustment.

After 3 to 6 minutes, the air conditioning unit 
stops operating automatically when the fan 
operation for airflow automatic adjustment 
has been carried out.

• 

• 

 CAUTION

• 

DO NOT 

adjust the dampers during fan 

operation for airflow automatic adjustment.

 

 CAUTION

• 

If there is no change after airflow 
adjustment in the ventilation paths, be sure 
to perform setting the automatic airflow 
adjustment again.

• 

Contact your dealer if there is no change 
after performing airflow adjustment in the 
ventilation paths, after performing the test 
operation of the outdoor unit or when the 
air conditioning unit is moved to another 
location.

• 

If booster fans, an outdoor air processing 
unit or HRV via duct are used, do not use 
automatic airflow adjustment control with a 
remote controller.

• 

If the ventilation paths have been changed, 
perform the setting of the airflow automatic 
adjustment again as described above from 
step 3 onwards.

static pressure.

 CONSTANT AIR FLOW CONTROL

Using the wire controller to set external

Summary of Contents for 42/38SHDS050

Page 1: ...ing your new air conditioning unit Make sure to save this manual for future reference This manual only describes the installation of outdoor unit When installing the indoor unit refer to the installat...

Page 2: ...cautions 05 Outdoor Unit Installation 12 a Outdoor Unit Installation Instructions 12 b Outdoor Unit Types and Speci cations 13 c Notes on Drilling Hole in Wall 14 Drainpipe Installation 15 Table of Co...

Page 3: ...ping Connection 17 A Notes on Pipe Length and Elevation 17 B Refrigerant Piping Connection Instructions 18 Wiring 20 a Outdoor Unit Wiring 20 b Indoor Unit Wiring 21 23 Air Evacuation 25 a Evacuation...

Page 4: ...ement sometimes the pipe connections need the transfer connector to install on the outdoor unit 11 Transfer connector 9 52 12 7 indoor unit used for multi type models only NOTE Pipe size di er from ap...

Page 5: ...strong winds typhoons and earthquakes that might a ect your unit and locate it accordingly Failure to do so could cause the equipment to fail After installation ensure there are no refrigerant leaks a...

Page 6: ...1 2 3 4 5 MC MC 6 7 Install the indoor unit Page 7 INSTALLATION ORDER Install the outdoor unit Page 13 Install the drainpipe Page 15 Evacuate the refrigeration system Page 25 Connect the wires Page 20...

Page 7: ...meets the following requirements There is enough room for installation and maintenance There is enough room for the connecting pipe and drainpipe The ceiling is horizontal and its structure can sustai...

Page 8: ...mension and air outlet size Air inlet size Air lter Position of descensional ventilation opening and size of mounted hook Air lter Electric control box Table 4 1 unit mm inch MODEL Btu h Outline dimen...

Page 9: ...re the same size before moving on 2 Carry out the pipe and line operation in the ceiling after nishing the installation of the main body While choosing where to start the operation determine the direc...

Page 10: ...all be added to reduce the noise for special requirement 1 Install the lter optional according to air inlet size 5 Please refer to the following static pressure to install Change the fan motor static...

Page 11: ...slightly di erent from the air conditioner you purchased The actual unit shall prevail Step 5 Fresh air duct installation Dimension Duct joint for fresh air 125mm 4 92 160mm 6 3 MODLE 18 60 Step 6 Mot...

Page 12: ...or unit may not exceed the maximum allowable pipe length If possible DO NOT install the unit where it is exposed to direct sunlight If possible make sure the unit is located far away from your neighbo...

Page 13: ...5 1 Length Speci cations of Split Type Outdoor Unit unit mm inch Refer to Fig 5 4 5 5 and Table 5 1 A B D Fig 5 4 Outdoor Unit Dimensions W x H x D Mounting Dimensions Distance A Distance B 946x810x41...

Page 14: ...cing the front of the unit 4 Connect a drain hose extension not included to the drain joint to redirect water from the unit during heating mode NOTE Make sure the water drains to a safe location where...

Page 15: ...lead to water damage If the drainpipe is bent or installed incorrectly water may leak and cause a malfunction of the water level switch In HEAT mode the outdoor unit will discharge water Ensure that...

Page 16: ...r drainage See Fig 6 5 Place the protective wall cu in the hole This protects the edges of the hole and will help seal it when you nish the installation process Wall Indoor Outdoor 12mm 0 5 inch Fig 6...

Page 17: ...frigerant circuit Contamination in the system may cause poor operating capacity high pressure in the refrigeration cycle explosion or injury Ventilate the area immediately if there is refrigerant leak...

Page 18: ...1 Make sure that the pipe is cut at a perfect 90 angle Refer to Fig 7 2 for examples of bad cuts Oblique Rough Warped 90 Fig 7 2 Step2 Remove burrs Burrs can a ect the air tight seal of refrigerant pi...

Page 19: ...a torque wrench to tighten the are nut according to the torque values in table 7 5 NOTE Use both a spanner and a torque wrench when connecting or disconnecting pipes to from the unit Fig 7 8 CAUTION...

Page 20: ...sconnects all poles with contact gap of a least 3mm 0 118 DO NOT modify the length of the power cord or use an extension cord CAUTION Connect the outdoor wires before connecting theindoor wires Make s...

Page 21: ...or connection a Using wire strippers strip the rubber jacket from both ends of signal cable to reveal about 15cm 5 9 of the wires inside b Strip the insulation from the ends of the wires c Using wire...

Page 22: ...nditioning unit is o perform the next steps Press the button COPY long Press the button or to select the AF Press the button CONFIRM Then the air conditioning unit will start the fan operation for air...

Page 23: ...System power supply from outdoor unit Power Speci cations e Page 23 f Wiring NOTE...

Page 24: ...the manifold gauge Keep the High Pressure side closed 4 Turn on the vacuum pump to evacuate the system 5 Run the vacuum for at least 15 minutes or until the Compound Meter reads 76cmHG 1x105Pa 6 Clos...

Page 25: ...osions or accidents Ensure that the appropriate refrigerant is used Refrigerant containers must be opened slowly Always use protective gear when charging the system DO NOT mix refrigerants types Some...

Page 26: ...emperature is being registered correctly d Ensure the indicators on the remote control and the display panel on the indoor unit work properly e Ensure the manual buttons on the indoor unit works prope...

Page 27: ......

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