DX Direct-Expansion Room-Level Precision Air Conditioning Unit
Module 1: The host unit compares the average controlled temperature and humidity values of all operating units with the setpoint for the host unit’s controlled temperature and humidity, thereby determining the target for the data center’s temperature and humidity requirements.
Units in the group control network operate in accordance with the data center’s temperature and humidity requirement direction. Standby, time-based rotation, fault-based rotation, and cascading functions are supported.
The exterior of the Xinya DX direct-expansion room-level precision air conditioner indoor unit is shown in Figure 1-1. The exterior of the Xinya DX direct-expansion room-level precision air conditioner outdoor unit is shown in Figure 1-2.
Appearance Introduction
Table 1-1: Description of Indoor Unit Models.
1
2
3
4
5
6
7
8
9
10
Her Majesty
070
A
X
P
E
K
B
M
0
Outdoor Unit Model Description
Table 1-2: Description of Outdoor Unit Models.
1
2
3
4
5
6
SW
50
N
P
H
M
Note: If the product has special technical and functional requirements that are not covered in the table above, please contact Xinya Air Conditioning to confirm the product model.
Serial Number
Category
Code
Description
1
Series Name
SW
Outdoor unit of data center-specific air conditioner
2
Heat exchange amount
50
Heat exchange level
3
Compressor Location
N
Compressor room
4
Heat Exchanger Name
P
Flat-type
V
V-shaped centralized
5
Refrigerant
H
Refrigerant R410A (standard)
6
Power supply standard
M
3 + PE ~ 380V, 50 Hz (standard)
Q
3+ PE ~ 380V, 60Hz
One
Other
Indoor unit model description
Serial Number
Category
Code
Description
1
Series Name
Her Majesty
Xinya DX Series Room-Specific Air Conditioner
2
Cooling capacity
070
Refrigerating capacity level
3
Cooling method
A
Air cooling
W
Water cooling
One
Other
4
Air supply method
X
Wind, fan sinking air supply
D
Downward air supply
You
Top-supply air (can be equipped with an air hood to achieve front-supply air)
5
Function
B
Cooling function
R
Cooling and heating functions
H
Cooling and heating functions
P
Cooling, heating, and humidifying functions
Fan Type
E
EC fan
7
System Configuration
J
R410A single-system (standard configuration for single systems, 25–45 kW)
K
R410A Dual System (standard dual-system configuration, 50–90 kW)
One
Other
8
Discharge method
L
Left outlet pipe (standard configuration, except for dual-system units)
R
Right outlet pipe
B
Left module with left-side outlet pipe; right module with right-side outlet pipe (standard configuration, dual-system unit).
9
Power supply standard
M
3N+PE~380V, 50Hz (standard configuration)
Q
3N+PE-380, 60Hz
One
Other
10
Special Features
0
None (standard)
1
With condensate pump
One
Other
Note: If the product has special technical and functional requirements that are not covered in the table above, please contact Xinya Air Conditioning to confirm the product model.
II. Product Features
Diversified forms Based on the air-supply method, they can be categorized into top-supply and bottom-supply configurations, among other diverse types, to meet the requirements of different installation and operating environments. Wide cooling capacity range Cooling capacity ranges from 25 kW to 110 kW, with flexible configuration options to suit large, medium, and small data centers. Precise control Temperature accuracy can be controlled to ±1°C, and humidity accuracy can be controlled to ±5% RH. High energy efficiency The adoption of a high-efficiency scroll compressor, a high-efficiency V/IA-type finned heat exchanger, a meticulously designed liquid separator, and a more rational internal layout results in a more… This ensures more uniform refrigerant distribution, thereby significantly enhancing the heat exchanger’s heat transfer efficiency and enabling the air-conditioning unit to achieve high efficiency and energy savings. Convenient and durable A unique modular framework with a compact structure and small overall footprint—stable and robust yet easy to disassemble—meets the demands of handling under extreme conditions. Requirement: Use thermal insulation cotton inside the body. Excellent thermal insulation performance: The single-door and double-door structural components exhibit high versatility, significantly reducing the variety of consumable parts (such as air filters). Infrared humidification Utilizing advanced infrared humidification technology, this humidifier effectively reduces its reliance on water quality and delivers fast, precise humidity control. Eco-friendly refrigerant To comply with international requirements for environmentally friendly refrigerants, R410A eco-friendly refrigerant is used. Multi-layered protection Sophisticated diagnostic and automatic alarm functions effectively prevent failures and enable rapid fault localization, providing comprehensive protection for the unit and thereby extending its service life. Easy to maintain The entire unit features a fully front-access design, allowing all components to be serviced from the front, thereby saving installation space.
III. Standard Components
Indoor unit The indoor unit mainly consists of a compressor, evaporator, expansion valve, fan, sight glass, dryer filter, and infrared humidifier, It is composed of components such as a PTC heater, safety control device, and air filter. Compressor The compressor employs a high-efficiency scroll compressor (as shown in Figure 1-3), which features low vibration, low noise, and high reliability. Evaporator A high-efficiency VIA-type finned evaporator is employed (as shown in Figure 1-4). The fins are hydrophilic slotted fins, paired with internally threaded copper tubes, resulting in even higher heat transfer efficiency. High. Design and validate appropriate distributors tailored to specific models to ensure extremely uniform refrigerant distribution across each circuit. The ground enhances the efficiency of the heat exchanger.
Outdoor unit
Throttling device Equipped with high-precision electronic expansion valve control (as shown in Figure 1-5), the system employs an online expert-style algorithm to precisely regulate refrigerant flow, ensuring stable operation. More energy-efficient, with a safer and more stable system.
Drying filter The dryer filter (as shown in Figure 1-7) can effectively remove moisture present in the refrigeration system over a certain period of time, while also filtering the system. Remove impurities generated during long- and medium-term operation to ensure normal system operation.
Fan A volute-less centrifugal fan is used (as shown in Figure 1-6), which features large airflow, long delivery distance, convenient maintenance, high reliability, and no features such as extreme speed regulation. An advanced fan fault feedback system can automatically detect faults caused by abnormal fan operation. The unit’s airflow decreases, and any currently operating heating or humidification functions are shut down, while an alarm signal is simultaneously activated.
Infrared humidifier Infrared humidifier (as shown in Figure 1-8) with microprocessor control. Simple and compact structure: easy to disassemble, clean, and maintain. Suspended from stainless steel The high-intensity quartz lamp tubes mounted on the steel humidification water tray emit infrared and far-infrared radiation, which within 5 to 6 seconds causes the water in the tray to… Water molecules absorb radiant energy to overcome surface tension, thereby evaporating in a pure state free of any impurities. Infrared The use of a humidifier reduces the system’s reliance on water quality, and its automatic flushing function keeps the water tray cleaner.
Sight glass A window in the system’s circulation loop allows observation of the refrigerant condition while simultaneously measuring the system’s moisture content. When the system’s moisture level exceeds the permissible limit, its The background color changes to the alert area color.
PTC electric heating PTC electric heating is employed (as shown in Figure 1-9), offering safety, energy efficiency, rapid heating, and a wide operating temperature range and voltage tolerance. It boasts advantages such as a wide operating range. Its heat output can both maintain the dry-bulb temperature in the equipment room and compensate for the temperature drop caused by dehumidification. As the temperature decreases, the lower surface temperature of the PTC heater prevents air ionization, thereby extending its service life.
Safety Control Device Each refrigeration system is equipped with high- and low-pressure protection as well as exhaust temperature protection. When the compressor’s discharge pressure or dis… An emergency alarm is triggered and protective measures are activated when the gas temperature exceeds the limit; when the compressor cannot operate normally due to excessively low suction pressure. At that time, an alarm signal is triggered and protective measures are activated. Each fan is equipped with a thermal overload protection relay; when the fan experiences an overload, Enables timely protection when necessary. The clogged filter switch allows real-time monitoring of the air handling unit’s airflow system.
Air filter A standard air filter (as shown in Figure 1-10) is used for convenient replacement. The filtration efficiency rating is G4 (EN779), with an average... With a filtration efficiency of over 90%, the cleanliness of the equipment room is effectively ensured.
Air-cooled outdoor unit Standard type The use of corrugated-fin tube heat exchangers offers high heat-transfer efficiency, as well as easy cleaning and maintenance. The external-rotor axial-flow fan features uniquely designed “sickle-shaped” metal blades that deliver superior aerodynamic performance and high efficiency. Six-pole and eight-pole fans, paired with a specially engineered air-guide ring, significantly reduce airflow noise passing over the blades. A high-performance three-phase motor custom-designed for base-station power-grid environments boasts a wide voltage range and exceptional reliability. An advanced fan-speed control system adjusts the output voltage by monitoring the condenser pressure, thereby regulating the outdoor fan speed to match the system pressure with the thermal load, effectively reducing fan noise. Acoustic design ensures stable, reliable, and efficient system operation; a variable-frequency-driven outdoor fan is employed, with an adjustable range of 10% to 100%, making it suitable for deployment in a wide variety of temperature environments. The energy-saving option (optional) builds upon the standard model by incorporating a unique design that enhances the overall system’s energy efficiency ratio, resulting in greater energy savings and higher operational efficiency while also meeting the demands of high-temperature environments ranging from +45°C to +55°C. Energy-saving type (optional) Building on the standard configuration, low-temperature components and freeze-protection for the electrical control cabinet have been added, enabling the entire system to operate reliably at temperatures as low as –40°C. The microprocessor controller is specifically designed to meet the unique requirements of the equipment room, offering excellent stability, high control accuracy, and advanced智能化 features. The indoor unit’s front panel is equipped with a true-color LED touch display control panel. The intuitive user interface clearly shows the current indoor temperature and humidity, the setpoints for temperature and humidity, the percentage output of each system component (such as the fan, compressor, cooling, heating, dehumidification, and humidification modes), and any alarm statuses. Users can access additional information by navigating through the main menu on the display. Alternatively, users can configure setpoints, event logs, graphical data, sensor data, alarm settings, and other information. The LCD backlight features an energy-saving design: if no key operations are performed for a specified period (the factory default is 5 minutes, configurable via the menu), the backlight will turn off; it will illuminate again upon any subsequent key press. The control system also supports multi-unit group control and intelligent capacity expansion, with multiple reserved interfaces enabling a variety of Monitoring method. The microprocessor controller panel is shown in Figure 1-11. Control System The user interface is simple and intuitive, with multi-level password protection to effectively prevent unauthorized operations. The controller features power-failure self-recovery and over- and under-voltage protection. Menu-driven operations enable precise monitoring of the operating hours for each major component. An expert-level fault diagnosis system automatically displays current fault information, facilitating equipment maintenance by service personnel. It can store 400 historical event records, including messages, warnings, and alarms. Configure the RS485 interface and adopt a standard communication protocol. Temperature setting. The temperature setting range is 18°C–32°C. Humidity setting: The humidity setting range is 40% RH to 95% RH. Alarm signal The microprocessor is equipped with audible and visual alarm functions. The standard alarm messages are as follows: High-temperature alarm, low-temperature alarm, high-humidity alarm, low-humidity alarm, system high-pressure alarm, system low-pressure alarm, filter clog alarm, and other user-defined alarms. The alarm backlight illuminates. The control system also supports multi-unit group control, enabling intelligent expansion through multiple reserved interfaces that can accommodate a variety of monitoring modes. The microprocessor control panel is shown in Figure 1-11.
Figure 1-11 Controller Panel
Optional components Upward air supply style For supply-air systems, optional配套 supply-air grilles and air deflectors are available to ensure uniform airflow distribution. Extended Component For applications involving long suction lines, an extension assembly may be used. After the compressor is shut down, the extension assembly effectively prevents refrigerant backflow and accumulation, ensuring the compressor’s next normal start-up and enhancing the system’s safety and reliability. Leak detection rope-type and single-point leak detectors can transmit alarm signals to the unit or to a standalone monitoring system, triggering the unit’s alarm and enabling prompt shutdown for timely troubleshooting. Smoke detector When the smoke detector senses smoke, it can immediately trigger the alarm system to shut down the unit. Fire detector The fire detector monitors the return air temperature on site and immediately shuts down the unit upon detecting high temperatures. High-efficiency air filter High-efficiency air filters are suitable for applications with higher cleanliness requirements. Wet-film humidifier The wet-film humidifier (as shown in Figure 1-12) is an integrated humidification component built into air conditioners. It features a simple, compact design that ensures cleanliness and quiet operation. Made from eco-friendly organic wet-film material, it boasts excellent water absorption, high saturation efficiency, lightweight construction, ease of manufacturing, and a small footprint, thereby saving space and facilitating disassembly, cleaning, and maintenance. In addition, it purifies and filters the air, enabling both clean-air and isenthalpic humidification. During humidification operation, the wet film itself consumes no power, resulting in significant energy savings. Note: Single-cooling models do not include heating-based humidification.
Figure 1-12 Wet-Film Humidifier
IV. Technical Parameters of Air-Cooled/Water-Cooled Units
Table 2-1 Technical Parameters of Air-Cooled Units
Recirculating air volume - m³/h Fan Parameters Number of units (units)
18000
21000
23000
24000
25600
28000
2
2
2
2
2
2
Electrical Heating Performance Parameters
Heating capacity - kW
9
9
9
9
9
9
Humidifier Performance Parameters
Humidification capacity - kg/h
6.5
6.5
6.5
6.5
6.5
6.5
Filter screen
Filter rating
G4
Connection pipe size specifications
Liquid pipe – mm (welded)
15.88
15.88
15.88
15.88
15.88
15.88
Gas pipe – mm (welded)
22
22
22
22
22
22
Humidifier inlet pipe (internal thread)
G1/2"
G1/2"
G1/2"
G1/2"
G1/2"
G1/2"
Drain pipe OD-mm (tower + hose clamp)
19
19
19
19
19
19
Indoor unit full-load current and power (for heating and humidifying models)
Indoor unit full-load current - A
71.92
77.6
77.6
93.44
93.44
104.34
Indoor unit full-load power – kW
42.54
44.86
44.86
53.56
53.56
57.60
Indoor unit dimensions
Unit width - mm
1800
1800
1800
1800
1800
1800
Unit depth - mm
1000
1000
1000
1000
1000
1000
Crew height - mm
1980
1980
1980
1980
1980
1980
Indoor unit weight
Indoor unit assembly dead weight - kg
695
705
715
735
755
800
Outdoor unit model
2*SW50NP
2*SW50NP
2*SW50NP
2*SW70NP
2*SW70NP
2*SW80NP
Main power
380V 3-phase 50Hz
Full-load current and power of the outdoor unit (with separate power distribution for the indoor and outdoor units)
Outdoor unit full-load current – A
2 times 4.7
2 times 4.7
2 times 4.7
2 times 5.8
2 times 5.8
2 times 5.8
Outdoor unit full-load power – kW
2 times 1.8
2 times 1.8
2 times 1.8
2*2.1
2*2.1
2*2.1
Outdoor unit dimensions
Unit width - mm
1650
1650
1650
2010
2010
2860
Unit depth - mm
1100
1100
1100
1100
1100
1100
Crew height - mm
1150
1150
1150
1150
1150
1150
Outdoor unit weight
Static weight of outdoor unit assembly – kg
2 times 168
2 times 168
2 times 168
2 times 210
2 times 210
2*256
Note:
1. The static pressure of the indoor unit airflow is as follows: 50 Pa for top supply and 20 Pa for bottom supply; models with static pressures up to 200 Pa are available upon request.
2. The parameters in this table apply to the standard ambient-temperature outdoor unit.
3. If the required data are not listed in the table, please contact Xinya Air Conditioning.
4. Depending on the project requirements, power distribution can be configured separately for the indoor and outdoor units; alternatively, the outdoor unit’s power supply can be derived from the indoor unit.
Table 2-2 Operating Conditions for the XinYa Series Air-Cooled Room-Scale Precision Air Conditioners
Project
Conditions
Ambient temperature
Indoor: 0°C~40°C
Outdoor: Standard type: -20℃~+45℃
Energy-efficient: -20°C to +55°C
Low-temperature type: -40℃~+45℃
Indoor environmental humidity
20%–80% RH
Protection Rating (Outdoor Unit)
IPX4
Altitude
≤1000m
Power Supply Adaptability
380V ±15%, 50 ±1 Hz
Note: When used in the following situations, please consult XinYa Air Conditioning’s qualified technicians: 1. The air handling unit’s supply voltage exceeds the rated voltage by 10% or falls below 90%, and the external static pressure exceeds 200 Pa. 3. When the altitude exceeds 1,000 m, derating is required.
V. Structural Dimensions
Indoor unit
The structural dimensions of the indoor unit are shown in Figures 3-1 and 3-2.
Outdoor unit of the air conditioner
The structural dimensions of the outdoor unit are shown in Figures 3-3 and 3-4.
Table 3-1 Mechanical Parameters of SW-Series Condensers (Unit: mm)
Product Model
External dimensions
L
H
W
H1
SW40NP
1650
1150
1100
710
SW50NP
1650
1150
1100
710
SW70NP
2010
1150
1100
710
SW80NP
2860
1150
1100
710
The outline and dimensions of the mounting base for the indoor unit (bottom-supply air) are shown in Figures 3-5 and 3-6 and Table 3-2.
Table 3-2 Installation Base Height Dimensions
Product Model
External dimensions
Mounting base height
H ≥ 500 mm (for bottom-supply air handling units, determined by floor height)
Note: The mounting base shall be drilled according to the actual positions of the mounting holes on the base plate, with a hole diameter of φ15 mm.
VI. Hood Dimensions
For the supply air system, gridded supply diffusers may be selected as required; the diffuser configuration is shown in Figure 3-7, and the specific dimensions are given in Table 3-3.
Table 3-3 Fan Dimensions (Unit: mm)
Type
A
B
C
Single door
1000
900
450
Double door
1000
1800
450
Note: If the air handling unit is equipped with a roof cowl exceeding 450 mm in height, please contact the manufacturer for custom fabrication.
