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Method of Charging refrigerant
■MXZ-3F54VF/3F68VF/4F72VF
Total
*
3
refrigerant
=
_
_
_
_
_
_
k
g
■MXZ-3F54VF2/3F68VF2/4F72VF2/4F80VF2
Total
refrigerant
=
2.4 kg
■MXZ-2F42VF/2F53VF/2F53VFH
■MXZ-2F42VF2/2F53VF2/2F53VFH2
Total
refrigerant
=
1.2 kg
■MXZ-2F42VF3/2F53VF3/2F53VFH3
Total
refrigerant
=
1.0 kg
■MXZ-2F33VF
■MXZ-2F33VF2
Total
refrigerant
=
1.0 kg
■MXZ-2F33VF3
Total
refrigerant
=
0.8 kg
*
1
If you connect indoor unit number 3 or 4 units, please add to charge refrigetrant amount 0.5kg
*
2
If you connect specific indoor unit(s), please add to charge refrigetrant amount 0.17kg per 1unit
Specific indoor unit is following: MSZ-LN18/25/35VG MLZ-KP25/35/50VF
*
3
In case total refrigerant amount exceed 2.4kg depending on combination, please charge only 1.0kg for maximum.
PUMPING DOWN
When relocating or disposing of the air conditioner, pump down the system following the procedure below so that no refrigerant is
released into the atmosphere.
1) Turn off the breaker.
2) Connect the gauge manifold valve to the service port of the stop valve on the gas pipe side of the outdoor unit.
3) Fully close the stop valve on the liquid pipe side of the outdoor unit.
4) Turn on the breaker.
5) Start the emergency COOL operation on all the indoor units.
6) When the pressure gauge shows 0.05 to 0 MPa [Gauge] (approximately 0.5 to 0 kgf/cm²), fully close the stop valve on the gas
pipe side of the outdoor unit and stop the operation. (Refer to the indoor unit installation manual about the method for stopping
the operation.)
* If too much refrigerant has been added to the air conditioner system, the pressure may not drop to 0.05 to 0 MPa [Gauge] (ap-
proximately 0.5 to 0 kgf/cm²), or the protection function may operate due to the pressure increase in the high pressure refriger-
ant circuit. If this occurs, use a refrigerant collecting device to collect all of the refrigerant in the system, and then recharge the
system with the correct amount of refrigerant after the indoor and outdoor units have been relocated.
7) Turn off the breaker. Remove the pressure gauge and the refrigerant piping.
When pumping down the refrigerant, stop the compressor before disconnecting the refrigerant pipes.
The compressor may burst and cause injury if any foreign substance, such as air, enters the pipes.
OBH790D
Indoor unit
Pre charge
*
+
number
1.4 kg
_
_
_
_
_
_
Pre charge
2.4 kg
Pre charge
1.2 kg
Pre charge
1.0 kg
Pre charge
1.0 kg
Pre charge
0.8 kg
SEZ-M50DA(L) PCA-M50/60KA
PEAD-M50JA(L)
WARNING
Connection
*
1
2
+
of specific I/U
kg
_
_
_
_
_
_
kg
+
+
+
+
+
65
Piping
+
length
0.0 kg
Piping
length
0.0 kg
Piping
length
0.0 kg
Piping
length
0.0 kg
Piping
length
0.0 kg
Piping
length
0.0 kg
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