Installation Manual
27
Installation
2) Connection of power supply
1. Connect the power supply cord to the independent power supply.
• Circuit breaker is required.
2. Operate the unit for 15 minutes or more.
1) PRECAUTIONS IN TEST RUN
• The initial power supply must provide at least 90% of the rated voltage.
Otherwise, the air conditioner should not be operated.
CAUTION:
For test run, carry out the cooling operation firstly even during heating season. If heating
operation is carried out firstly, it leads to the trouble of compressor. Then attention must be paid.
Carry out the test run more than 5 minutes without fail.
(Test run will be cancelled 18 minutes later automatically)
• The test run is started by pressing the room temperature checking button and down timer button for 3
seconds at the same time.
• To cancel the test run, press any button.
• After completing work, be sure to measure and record trial run properties, and store measured data, etc.
• Measuring items are room temperature, outside temperature, suction temperature, blow out temperature,
wind velocity, wind volume, voltage, current, presence of abnormal vibration and noise, operating pressure,
piping temperature, compressive pressure.
• As to the structure and appearance, check following items.
❏
Is the circulation of air adequate?
❏
Is the draining smooth?
❏
Is the heat insulation complete
(refrigerant and drain piping)?
❏
Is there any leakage of refrigerant?
❏
Is the remote controller switch operated?
❏
Is there any faulty wiring?
❏
Are not terminal screws loosened?
M4......118N.cm{12kgf.cm}
M5......196N.cm{20kgf.cm}
M6......245N.cm{25kgf.cm}
M8......588N.cm{60kgf.cm}
Test running
CHECK THE FOLLOWING ITEMS WHEN INSTALLATION IS COMPLETED
3. Once the desired vacuum is created. Disconnect the vacuum pump and open the liquid side valve stem
by turning it to counter-clockwise direction with service valve wrench.
4. Open completely the gas side valve buy turning to counter-clockwise with service valve wrench.
5. Remove slowly the charge hose connected to the gas side service port (to release the pressure).
6. Replace back the flare nut and its bonnet on the gas side service port. Fasten the flare nut with
adjustable wrench to prevent any leakage from the system.
7. Fasten back the valve cap on both gas and liquid side service valves.
Summary of Contents for ATNW246PLF0
Page 30: ...30 Ceiling Cassette Air Conditioner Memo ...
Page 31: ...P No MFL42291410 ...
