Chapter 1 Overview 1
Liebert.CRV+ Series Air Cooled Precision Air Conditioner User Manual
Chapter 1 Overview
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
5
6
7
8
9
10
11 12 13 14 15
16
17 18 19 20 21
22
23
24
25
C
R
0
2
5
H
A
1
3
8
O
S
0
2
E
1
0
0
0
0
C
V
0
0
0
Bit 1 and Bit 2 Series Name Description
Bit 14 Filter
CR
Liebert CRV+
2
G4 (EU4)
Bit 3 ~ Bit 5 Cooling Capacity
0
G4 (EU4)+filter pressure difference switch
025 Norminal cooling capacity is 25kW
Bit 15 Coil and valve
Bit 6 Air Supply Mode
7
Water cooled
，
three way valve
R
Horizontal air supply with guide grill
H
Chilled water, standard coil
H
Horizontal air supply without guide grill
E
Bit 7 System Type
A
Air cooling
Bit 16 Cabinet Color
Bit 8 Fan
1
Standard color
（
Z-7021 black-grey
）
1
EC fan
Bit 17 High Pressure Option
Bit 9 Power Supply
0
None
3
380-415V/3ph/50Hz+N
Bit 18 Low Voltage Locking Option
T 380-415V/3ph/60Hz+N
0
None
Bit 10 System Configuration
Bit 19 Monitor
2
Chilled water, two way valve
0
None
3
Chilled water, three way valve
S
SIC Card
8
R-410A brushless scroll compressor
Bit 20 Detector
Bit 11 Humidifier
0
None
0
None
Bit 21 Package
S
Electrode humidifier
P
Domestic
Bit 12 Display
C
Overseas(sea worthly)
S
Standard display panel
Bit 22 Special Function
L
Large display panel
A
None
Bit 13 Heating
V
With pump for condensate water draining
0
None
Bit 23~Bit 25 Special identifier for order
1
Electrical heater
Standard DX air cooled coil,electrical
expansion valve
Figure 1-1 Nomenclature of the CRV+ air cooled AC unit
