3-3. PIPE CONNECTION
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Indoor unit connection
Connect both liquid and gas pipings to indoor unit.
• Apply a thin coat of refrigerant oil (J) on the seat surface of pipe.
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•Use tightening torque table above as a guideline for indoor unit side joints, and tighten
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Outdoor unit connection
Connect pipes to stop valve pipe joint of the outdoor unit following the same procedure detailed in Indoor unit connection.
• For tightening, use a torque wrench or spanner.
3-4. INSULATION AND TAPING
1)Cover piping joints with pipe cover.
2)For outdoor unit side, insulate the piping, including valves.
3)Apply piping tape (G) starting from the connection on the outdoor unit.
•When piping has to be installed through a ceiling, closet or where the temperature
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4. PURGING PROCEDURES, LEAK TEST, AND TEST RUN
4-1. PURGING PROCEDURES AND LEAK TEST
1)Remove service port cap of stop valve on the side of the outdoor unit gas pipe.
2)Connect gauge manifold valve and vacuum pump to service port of stop valve on the gas pipe side of the outdoor unit.
4-2. TEST RUN
1) | Insert power supply plug into the power outlet and/or turn |
| on the breaker. |
2) | Press the E.O. SW once. Test run will be performed for |
| 30 minutes. If the power lamp blinks every 0.5 seconds, |
| inspect the indoor/outdoor unit connecting wire (A). After |
| the test run, emergency COOL mode (75ºF [24ºC] COOL) |
*4 to 5 turns
*Close
*Open 
Stop valve cap (Torque 19.6 to
29.4N•m, 200
WRNJIƒFP
Stop valve for LIQUID
Compound pressure gauge (for R410A)
Pressure gauge 
(for R410A)
Gauge manifold valve (for R410A)
will start. |
3) To stop operation, press the E.O. SW several times until |
all LED lamps turn off. Refer to operating instructions for |
details. |
Checking the remote (infrared) signal reception
Emergency operation switch (E.O. SW)
Hexagonal wrench
Service port cap (Torque 13.7 to
17.7N•m, 140 to
180 kgf•cm)
Handle
Low
Stop valve for
GAS
Adapter for pre- venting the back
ÀRZ
Handle High
Charge hose (for R410A)
Vacuum pump (or the vacuum pump with the function to SUHYHQWWKHEDFNÀRZ
Press the ON/OFF button on the remote controller and listen for an audible indicator from the indoor unit. Press the ON/OFF button again to turn the air conditioner off.
•Once the compressor stops, the restart preventive device operates so the compressor will not operate for 3 minutes to protect the air conditioner.
4-3. AUTO RESTART FUNCTION
This product is equipped with an auto restart function. When the power supply is cut off during operation, such as during blackouts, the function automatically starts operation in the previous setting once the power supply is resumed. (Refer to the operating instructions for details.)
Precautions when using the control valve
Service port
A
Control valve 
Open 
Close | Charge hose |
Body
When attaching the control valve to the service port, valve core may deform or loosen if excess pressure is applied. This may cause gas leak.
When attaching the control valve to the service port, make sure that the valve core is in closed position, and then tighten part A. Do not tighten part A or turn the body when valve core is in open position.
Caution:
•After test run or remote signal reception check, turn off the unit with the E.O. SW or the remote controller before turning off the power supply. If this procedure is not per-
formed, the unit will automatically begin operation when power supply is resumed.
To the user
•After installing the unit, explain to the user about auto restart function.
•If auto restart function is unnecessary, it can be deactivated. Consult the service rep- resentative to deactivate the function. Refer to the service manual for details.
4-4. REMOTE CONTROLLER SETTING
Set the slide switch of the remote controller according to where the indoor unit is installed in the area. If the switch is not set correctly, the air conditioner may not function properly.
3)Run the vacuum pump 15 minutes or more.
4)Check the vacuum with the gauge manifold valve, then close it and shut off the vacuum pump.
5)Leave as it is for one or two minutes. Make sure pointer gauge manifold valve remains
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6)Quickly remove gauge manifold valve from service port of stop valve.
7)After refrigerant pipes are connected and evacuated, fully open all stop valves on both sides of gas pipe and liquid pipe. Operating the unit without fully opening the valves lowers the performance and causes problems.
8)Refer to
9)Tighten cap of service port.
10)Conduct a leak test
Location of unit in area:
Left: Distance to objects (wall, cabinet, etc.) is less |
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Center: Distance to objects (wall, cabinet, etc.) is |
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more than |
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Right: Distance to objects (wall, cabinet, etc.) is less |
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than |
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1) Remove the front lid.
2) Set the slide switch according to the installed position of the indoor unit.
3) Insert two (AAA) batteries.
4) Reattach the front lid.
5) Press the RESET button gently using a thin instrument.
Installation posi- | Left | Center | Right | RESET |
button | ||||
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Slide switch |
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Remote controller |
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display |
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4-5. EXPLANATION TO THE USER
•Using the OPERATING INSTRUCTIONS, explain to the user how to use the air condition-
HU WKHUHPRWHFRQWUROOHUUHPRYLQJWKHDLU¿OWHUVSODFLQJRUUHPRYLQJWKHUHPRWHFRQWUROOHU from the remote controller holder, cleaning methods, precautions for operation, etc.)
•Recommend that the user read the OPERATING INSTRUCTIONS carefully.
