�_C_H_A _R G_I_N _G_T _H_E_ R _E_FR_I_G_E_R A_ N_ T_{_21:_2_) �)
When recharging refrigerant, follow the procedure below.
1. In case of recharge refrigerant (cause of refrigerant leak)
please follow suggestion below (reference detail from service guide)
• In case of outdoor PCB (A 1 P) set refrigerant recovery mode at ON please
press switch BS2 during 5 second.
• In case remote was set refrigerant recovery mode ON
please follow caution label that sticked at backside of front plate.
2. Shut down the power at least 1 minute after setting process (1) is performed.
•It the power is turned on before the process (3) - (6) are completed, the
refrigerant recovery mode is turned off and the refrigerant cannot be
recovered or charged normally. If the power is turned on by necessary, turn
on refrigerant recovery mode again.
3. Recover the refrigerant from both the refrigerant recovery port and liquid stop valve service port
(or gas stop valve service port) simultaneously until the pressure drops below 0.09 MPa
(gauge pressure: -0.011 MPa) by using a refrigerant recovery machine.
4. Modify the leakage points.
Refrigerant
recovery port
Liqu!d stop valve
service art
5. Perform the airtightness test and air-purge accordance with (6) AIRTIGHTNESS TEST AND AIR-PURGE.
Gas stop valve
service art
6. Charge the refrigerant from the service port of the liquid side stop valve when recharging refrigerant.
(Note) Do not turn on power during evacuation. The motor may be damaged due to vacuum discharge.
DETAIL A
Be sure to write down the additional amount of refrigerant charged or the entire amount re-charged on the precaution plate on the rear of the front panel,
as this information is needed in case of after-sales service.
(
Precautions when adding R32
)
• Before charging, check whether the cylinder has a siphon attached or not.
Charging a cylinder with an attached siphon
Charging other cylinders
m
Stand the cylinder upright at charging.
V
Stand the cylinder upside-down and charge.
(There is a siphon piping inside, so that cylinder
(Turn the cylinder upside-down at charging.)
need not be upside-down to charge with liquid.)
• To prevent entry of any impurities and ensure sufficient pressure resistance, always use the special tools dedicated for R41 OA or R32.
• The refrigerant should be charged from the service port of the liquid side stop valve.
� CAUTION
( To plumbing persons )
• After completing installation, be sure to open the valves.(Operating the unit with the valve shut will break the compresssor)
• After complete charging of refrigerant carry out refrigerant leak check and heat insulation work. (Failure to carry out heat
insulation work may result in leakage of water)
• Do not allow refrigerant to escape into the atmosphere recklessly for earth environment protection ..
0
ELECT RI CA L WI RIN G WORK (1/3)
)
� WARNING
Make sure to install the earth leakage breaker.
(The earth leakage breaker is required in order to prevent electric shocks or a fire.)
• Electrical wiring must be carried out by qualified personnel.
•Before obtaining access to terminal devices, all supply circuits must be interrupted.
� CAUTION
ITo the electrician I
• Make sure to install a current balance type earth leakage breaker coping with high harmonics.
(This unit is equipped with an inverter device. Use an earth leakage breaker coping with high harmonics to prevent wrong actuation.)
• Do not run the unit until the refrigerant charging is complete. (Operating the unit before the completion will break the compressor.)
• Do not remove the thermistors or sensors when the power supply and transmission wiring are connected.
(Operating the unit with the thermistors and sensors removed will break the compressor.)
• Make certain that all electric wiring work is carried out by qualified personnel according to the applicable legislation and this installation manual, using
a separate circuit. Insufficient capacity of the power supply circuit or improper electrical
construction may lead to electric shocks or a fire.
• An insufficient power supply capacity or improper electric work may lead to electric shocks or a fire.
• The wiring between the indoor unit and outdoor unit must be for 230V.
• For electric wiring work, refer to also the" WIRING DIAGRAM".
• When doing the electrical wiring, always shut off the power source before working, and do not turn on the branch switch until all work is complete.
• Make sure to earth the air conditioner. Earthing resistance should be according to applicable legislation.
• Do not connect the earth wiring to gas or water piping, lightning conductor or telephone earth wiring.
• Gas piping ....... lgnition or explosion may occur if the gas leaks.
• Water piping ..... Hard vinyl tubes are not effective earths.
• Lightning conductor or telephone earth wiring ..... Electric potential may rise abnormally if struck by a lightning bolt.
• The earth is needed in order to reduce the noise generated by the unit's inverter and influence on other appliances and to release the charged
electric charge on the outdoor unit surface by leaked current.
• Do not install a phase advance capacitor for improvement of power factor. Since this unit is mounted with an inverter device,
the effect of power factor improvement not only cannot be expected, but also there is a risk of the capacitor getting abnormally overheated due to
harmonics.
• Be sure to use earth leakage breaker dedicated for earth leakage protection in combination with the load break switch with fuse or breaker for wiring.
• In case of three-phase. Machine, electric wiring must be connected in normal phase connection.
• For wiring, use the designated power supply wiring and connect firmly, then secure to prevent external force being exerted on the terminal
attachment (power supply wiring, transmission wiring, earth wiring).
• Left-over wiring should not be wrapped and stuffed into the outdoor unit.
• To prevent the power wiring from being damaged by the knock hole edges, put it in a wiring piping or use insulated bush, etc. to protect it.
• To prevent the wiring from coming in contact with piping (particularly the high-pressure piping), secure it with the included clamping material as
shown page 32.
• When wiring, form the wiring so that the front plate does not float and make sure the front plate is securely fastened.
• Fix the power supply wiring, the earth wiring and the transmission wiring by clamps as shown in the figure.
43
Summary of Contents for FCA125AV16
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