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The Liebert.CRV+ series air cooled precision air conditioner (CRV+ air cooled AC unit for short) is a professional
device, applicable to occasions inaccessible to general public.
This chapter introduces CRV+ air cooled AC unit appearance, model description, refrigerant requirement, main
components of indoor unit and requirements on operation and storage environment.
1.1 Product Introduction
The CRV+ AC unit is a medium and small size precise environment control system, applicable to environment control
in medium and small size equipment room, modularized machine room and machine room of high heat density with
need of saving energy. It can maintain a favorable running environment for precise devices such as sensitive devices,
industry process devices, communication devices and computers.
The CRV+ air cooled AC unit features high reliability, high sensible heat ratio and large airflow. An electrode
humidifier is configured and R410A environment-friendly refrigerant is used, to meet the requirements on environment
friendly refrigerant internationally.
The unit is an air-cooled single cooling system, that is, compressor refrigeration system. The system is configured
with DC speed regulation back-inclined centrifugal fan (EC fan for short).
The CRV+ air cooled AC unit consists of an indoor unit and an outdoor unit. The Liebert.CRV+ condenser is standard
configuration, and it can reduce noise pollution to environment to greatest extent on the base of satisfying system
cooling requirement, and improve reliability of operation.
1.2 Nomenclature of the CRV+ Air Cooled AC Unit
The nomenclature of the CRV+ air cooled AC unit is shown in Figure 1-1.
1
2
3
4
C
R
0
2
Bit 1 and Bit 2 Series Name Description
CR
Liebert CRV+
Bit 3 ~ Bit 5 Cooling Capacity
025 Norminal cooling capacity is 25kW
Bit 6 Air Supply Mode
R
Horizontal air supply with guide grill
H
Horizontal air supply without guide grill
Bit 7 System Type
A
Air cooling
Bit 8 Fan
1
EC fan
Bit 9 Power Supply
3
380-415V/3ph/50Hz+N
T
380-415V/3ph/60Hz+N
Bit 10 System Configuration
2
Chilled water, two way valve
3
Chilled water, three way valve
8
R-410A brushless scroll compressor
Bit 11 Humidifier
0
None
S
Electrode humidifier
Bit 12 Display
S
Standard display panel
L
Large display panel
Bit 13 Heating
0
None
1
Electrical heater
Chapter 1 Overview
5
6
7
8
9
10
11 12 13 14 15
5
H
A
1
3
8
O
Figure 1-1 Nomenclature of the CRV+ air cooled AC unit
Liebert.CRV+ Series Air Cooled Precision Air Conditioner User Manual
16
17 18 19 20 21 22
S
0
2
E
1
0
0
Bit 14 Filter
2
G4 (EU4)
0
G4 (EU4)+filter pressure difference switch
Bit 15 Coil and valve
7
Water cooled，three way valve
H
Chilled water, standard coil
E
Standard DX air cooled coil,electrical
expansion valve
Bit 16 Cabinet Color
1
Standard color（Z-7021 black-grey）
Bit 17 High Pressure Option
0
None
Bit 18 Low Voltage Locking Option
0
None
Bit 19 Monitor
0
None
S
SIC Card
Bit 20 Detector
0
None
Bit 21 Package
P
Domestic
C
Overseas(sea worthly)
Bit 22 Special Function
A
None
V
With pump for condensate water draining
Bit 23~Bit 25 Special identifier for order
Chapter 1 Overview
23
24
25
0
0
C
V
0
0
0
1
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