Liebert CRV+ Series User Manual

18 Chapter 2 Mechanical Installation
Liebert CRV+ Series Air Conditioner User Manual
Table 2-10 Standard refrigerant charging amount for 10m connecting pipe system
Indoor unit model
Charging amount
CR025 CR035
Outdoor unit model LSF32 LSF38 LSF42 LSF42 LSF52 LSF76
Charging amount of connecting pipe
between indoor unit and outdoor unit
1.07 1.74
Standard charging amount 8.83 9.52 10.04 11.28 12.71 13.37
Note:
1. If the outdoor unit model is different from the recommended one, you need to recalculate the system standard charging
amount acording to the given data.
2. If the connection pipe between the indoor unit and the outdoor unit is longer than 10m, you need to recalculate and refill the
refrigerant to the system
The refilling amount of the refrigerant is calculated through the following formula:
Refrigerant refilling amount (kg) = refrigerant refilling amount of per meter liquid pipe (kg/m) × total length of extended
liquid pipe (m)
See Table 2-11 for refrigerant refilling amount of each meter liquid pipe.
Total length of extended liquid pipe (m) = Total length of liquid pipe (m) - 10m
Table 2-11 Refrigerant refilling amount of per meter liquid pipe with different ODs
Liquid pipe OD (mm)
Refrigerant refilling amount of per
meter liquid pipe (kg/m)
Liquid pipe OD (mm)
Refrigerant refilling amount of per
meter liquid pipe (kg/m)
12.7 0.107 22 0.321
16 0.174 25 0.431
19 0.245 28 -
For the refrigerant charging method, refer to 4.2.2 Commissioning Procedures.
2. Adding refrigeration oil
The refilled refrigerant will dilute the refrigeration oil in the system and affect the lubricating and cooling effects of the
refrigeration oil. Therefore, the refrigeration oil should be added. See the formula below:
Amount of refrigeration oil (L) to be added = refrigerant refilling amount (kg) × 0.1
The refrigeration oil used in the Liebert CRV+ air conditioner are given in Table 2-12.
Table 2-12 Types of refrigeration oil
Unit model Types of refrigeration oil Brand and type
CR025 POE
Parker Emkarate RL32-3MAF/(Virginia) LE32-3MAF
Copeland® Ultra 32-3MAF
Lubrizol Emkarate RL32-3MAF
NuCalgon 4314-66 (Emkarate RL32-3MAF)
CR035 PVE Idemitsu FVC68D
2.6 Removing Transportation Fastener And Vibration Absorber
To protect partial components from damaging and distorting due to bumping, impact and resonation, fasteners and
vibration absorbers are mounted at certain locations before delivery. Remove the fasteners and vibration absorbers
before installation and commissioning.
Removing pipe fixity
To prevent long copper pipe from getting close to metal plate and thus causing wearing and crack of the copper pipe,
vibration absorbing foams are fitted between them. Remove these objects and do cleaning before installation and
commissioning.
Removing limiting piece of electrical control box
To prevent the electrical control box from moving during transportation, a limiting piece of electrical control box is
installed before delivery. You need to remove the limiting piece before operating the unit, so you can slide out the
electrical control box during maintenance.

Liebert CRV+ Series Specifications

General

Refrigerant	R410A
Frequency	50/60 Hz
Operating Ambient Temperature	64° to 113°F (18° to 45°C)
Sound Pressure Level	Varies by model (typically 45 dB(A) to 65 dB(A))
Dimensions	Varies by model (consult specific model documentation)
Weight	Varies by model (consult specific model documentation)