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2
Chapter 1 Overview
Model
Note:
[1]: The heating capacity is only for the models with heating function;
[2]: The humidification capacity is only for the models with humidification function
1.4 Main Components
1.4.1 Indoor Unit
The indoor unit consists of evaporator, compressor, fan, micro-processing controller, thermal expansion valve,
strainer, filter, heater (optional), humidifier (optional) and surge protective devices (SPD, optional). For option
introduction, refer to 1.5 Options.
Evaporator
Adopt a fin-tube heat exchanger with high efficiency. The distributor is designed and verified according to individual
model to ensure that the refrigerant is distributed evenly in each loop, improving the efficiency of the heat exchanger
to a great extent.
Compressor
Adopt a compressor with high efficiency ratio. It features low vibration, low noise and high reliability.
Fan
Adopt a centrifugal fan with high efficiency and high reliability. It features large airflow, long blowing distance, direct
driving and easy maintenance.
Micro-processing controller
Provide a simple-operation user interface with multi-level password protection, self-recovery upon power failure,
high-voltage & low-voltage protection, phase loss protection, automatic phase-sequence switching upon anti-phase
and rotate speed control of the outdoor fan. The expert-level fault diagnose system can automatically display current
fault information to facilitate equipment maintenance by maintenance personnel.
Thermal expansion valve
Adopt a thermal expansion valve with external equalizer type. It collects temperature and pressure signals at the
same time to accurately regulate the refrigerant flow.
Strainer
Filtrate the impurities generated during long-term system operation and ensure normal system operation.
Filter
Adopt nylon filter material with big mesh for Liebert_DM AC. The filter features compact structure and easy
maintenance. It can be washed repeatedly.
1.4.2 Outdoor Unit
The outdoor unit consists of fan and condenser. Other than the above components, the Lee-Temp model also
includes a low-temperature unit.
Fan
Adopt axial flow blades with low noise. The single-phase motor with high performance is customized based on the
power grid of base stations, so it can work over a wide voltage range with high reliability.
Condenser
Adopt a fin-tube heat exchanger with high heat dissipation and wavy fins. It is free of dust accumulation, and can be
easily cleaned and maintained.
Nominal refrigeration
Power（kW）
capacity (kW)
New Liebert_DM Series Air Conditioner User Manual
Energy efficiency
Heating capacity
rate
(kW)
[1]
Humidification
[2]
capacity
(kg/h)
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