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Vertiv I Liebert LPC I User Manual
2.9.5 Charging the refrigerant and adding the refrigerant oil
The Liebert LPC air conditioners come pre-charged in the factory with 2bar Nitrogen. The
table 2.9 indicates the standard charged amount. The users can determine the charging
amount of the refrigerant according to the system configuration and the length of the
connection pipes between the indoor and outdoor unit.
Table 2.9
Model of the Indoor Unit L1015
Model of the outdoor unit LSF24 LSF32
Outdoor Temperature
40
°
C 45
°
C
Standard charged amount (kg) 7.0 9.5
The standard charged amount refers to the sum of the charged amount for the
indoor unit, outdoor unit, and the 10m connection pipe.
There are scenarios where the connection pipe between the indoor unit and outdoor unit is
longer than 10m. In such cases, refill the refrigerant to the system as displayed in the table in
table 2.10 to ensure a smooth operational flow.
Table 2.10
Liquid Pipe (OD) Refrigerant refilling amount per meter of the Liquid pipe (kg/m)
12.7 0.107
16
0.174
19
0.245
22
0.321
25
0.431
28
NA
Refilling amount of the Refrigerant = Refilling amount of per unit length of the liquid pipe
(kg/m) * total length of the extended liquid pipe in meters.
On checking the table in Table 3.9, then the total length of the extended liquid pipe (in
meters) = Total length of the liquid pipe -10m
The refilled refrigerant will dilute the POE oil in the system and plays a major role in the
lubrication and cooling effects of the POE oil. Thus, it is for this purpose that the refrigerant
oil must be added. The added amount of POE oil of the Liebert LPC air conditioner is
displayed in the table 2.11.
L1015 use the POE oil. Therefore, contact Vertiv Co. if there is a requirement
to add the refrigerant oil.
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