Vertiv | Liebert XDH | User Manual
3
Product Overview
1.3.Model Nomenclature
The model of the XDH PAC is fully-defined by eleven digits, as represented in Table 1-1.
Table 1-1 Nomenclature of XDH Unit
1
2
3
4
5
6
7
8
9
10
11
XD
H
0
3
0
B
S
1
L
H
0
Digit 1,2 Product Model
Digit 8 Refrigerant Type
XD
X-treme Heat Density System
1
R410a
H
Horizontal Row Cooler
2
R134a
Digit 3 Cooling Capacity kW
Digit 9 Water Pump
0-9
Nominal Net Cooling Capacity - kW
L
Non-Water Pump
Digit 4 Cooling Capacity kW
5
Water Pump
0-9
Nominal Net Cooling Capacity - kW
Digit 10 Supply Air Type
Digit 5 Cooling Capacity kW
R
Grille
0-9
Nominal Net Cooling Capacity - kW
H
Non-grille
Digit 6 Module Size
Digit 11 Version
B
300 mm Base Unit
0
Non-Water Pump and Grille
L
600 mm Large Unit
1
Water Pump and Grille
Digit 7 Power Supply
S
220 V to 240 V/ 1 Ph/ 50 Hz,
220 V to 240 V/ 1 Ph/ 60 Hz
1.4.Components
This section provides an overview of the main components and their features of the XDH unit. Liebert XDH
includes the micro-channel heat exchanger evaporator coil, EC fans, electronic expansion valve, air filter,
refrigerant filter dryer, condensate drain pump, microprocessor controller, and a power module.
1.4.1.Micro-channel Evaporator
It provides higher heat transfer efficiency for high heat density applications. The heat exchanger design
facilitates hassle-free access to the coil, large surface area for efficient heat absorption, low air pressure
difference across the coil even at higher airflow rates, and it is also light and compact for easy removal, and
repair/ replacement.
1.4.2.EC Fan
EC fans are designed to deliver large airflow rates, higher static pressures, and much lower power consumption.
The capacity output of the system can be adjusted according to the cooling demand by modulating the fan
rotational speed.
