Table of Contents
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1 Product Overview
The Vertiv™ Liebert® CRV4 series air-cooled precision air conditioner (hereafter referred to as CRV4 or the unit) is a
professional equipment suitable for places that are not easily accessible to the general public. This section describes the
model description, product introduction, features, and main components of the unit.
1.1 Product Introduction
CRV4 is a precision environment control system for high heat-density environment. It provides a suitable operating
environment for sensitive equipment, industrial process equipment, communication equipment, and computers in small,
medium, and large equipment rooms.
The unit features high reliability, high sensible heat ratio, and large air volume. It is equipped with an electrode humidifier or
a wet film humidifier and uses R410A refrigerant which is environmentally-friendly and meets international requirements.
The unit is configured with the high-efficiency variable-capacity compressor and the hot-swappable, direct-current,
variable-speed axial flow fans (EC fans).
CRV4 includes two parts: indoor unit and outdoor unit. The condenser adjusts the speed of the fan through pressure,
minimizing the noise pollution to the environment while meeting the cooling requirements, improving the operation
reliability, and reducing the footprint of the outdoor unit.
1.2 Model Nomenclature
1
2
3
4
C
R
0
3
Digit
Feature
1, 2
Product model
3, 4,
Cooling capacity
5
6
Air supply type
7
System type
8
Fan type
9
Power supply
10
System configuration
11
Humidification
12
Display
1 Product Overview
5
6
7
8
9
10
6
R
A
1
N
8
Value
CR
025/ 035/
036/045/066
R
H
A
P
1
N
8
L
0
S
W
S
7
Proprietary and Confidential ©2023 Vertiv Group Corp.
Vertiv™ Liebert® CRV4 Series Air-cooled Precision Air Conditioners User Manual
11
12
13
14
15
16
S
7
1
2
E
3
Description
CRV
Nominal cooling capacity, kW
Horizontal airflow with baffle
Horizontal airflow without baffle
Air-cooled, cooling-only model (reheat and humidification are optional)
Refrigerant pump cooling
EC fan
380-415 V, 50/60 Hz, 3 Ph + N + PE
Variable speed compressor, R410A refrigerant (single compressor single
circuit)
Single circuit, variable speed compressor, R410A refrigerant, single pump
None
Electrode humidifier
Wet film humidifier
Standard display
Global HMI 7-inch screen
17
18
19
20
21
22
0
0
0
0
P
V
23
24
25
0
4
0
1
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