Product expires on: Dec 31, 2024
Alternative product recommendation:
Liquid Cooling Unit LCU DX, redundant
Article number: SK 3311.491
Refrigerant-based enclosure cooling in redundant version for VX IT or Micro Data Center without heating up the installation room. With two output categories 3 kW and 6.5 kW, the ideal cooling solution for smaller IT applications.
- Article number:
- SK 3311.491
- Design
- LCU DX 3 kW redundant
- Benefits
- Space-saving solution by installing the redundantly designed internal unit in the VX IT server enclosure or the Micro Data Center
- Maximum energy efficiency due to EC fan technology and IT-based control
- Control of the server inlet temperature
- The inverter-controlled compressor adapts the cooling output to the current heat loss inside the enclosure
- Absorbed thermal energy is emitted directly to the ambient air at the (inverter-controlled) external unit's location, without heating up the installation room
- Applications
- Cooling unit for VX IT server racks and for Micro Data Centers
- Function principle
- The redundant variants have two cooling circuits and controllers inside the internal unit, plus two inverter-regulated external units. The fault and operating hours changeover allows regular switching between the two external units, and ensures automatic changeover in the event of a malfunction or failure.
- The device supports front-to-back air routing typical of IT applications, and regulates the server inlet temperature to the set value
- Material
- Sheet steel, spray-finished
- Colour
- Internal unit: RAL 7035
External unit: white - Supply includes
- Internal unit (evaporator coil)
2 external units (inverter-controlled)
482.6 mm (19") mounting trim panel with display and control components
Condensate hose - Installation options in VX
- 482.6 mm (19") mounting angles, standard or dynamic, must be offset in the width by 50 mm off-centre
- The front distance between the 482.6 mm (19") mounting angles and the front edge of the VX frame must be at least 100 mm
- Two punched sections with mounting flanges are required for attachment on the inner mounting level
- Air baffle plates are required to separate the hot/cold zones within an enclosure
- A base/plinth is required to route the cable downwards
- Note
- Below the operating limit, fluctuations in the air inlet temperature are possible
- The electrical connection is made on the external unit. The internal unit is supplied by the external unit.
- A separate power supply may be needed, depending on the external unit
- IP protection category to IEC 60 529
- Internal unit IP 20
- External unit IP X4
- Modulation range
- 1 ‐ 3 kW
- Max. cooling output
- 3 kW
- Type of electrical connection
- Connection clamp
- Duty cycle
- 100 %
- Refrigerant/cooling medium
- Refrigerant: R410A
- To fit
- Enclosure type: VX IT
Width: = 800 mm
Height: ≥ 1,800 mm
Depth: ≥ 1,000 mm - Internal unit dimensions
- Width: 105 mm
Height: 1,550 mm
Depth: 820 mm - External unit dimensions
- Width: 810 mm
Height: 558 mm
Depth: 310 mm - Rated operating voltage
- 230 V, 1~, 50 Hz
- Pre-fuse
- 16 A
- Rated current
- 7 A
- Packs of
- 1 pc(s).
- Net weight
- 129.2 kg
- Gross weight
- 136 kg
- Customs tariff number
- 84158200
- EAN
- 4028177709331
- ETIM 9
- EC000855
- ETIM 8
- EC000855
- ECLASS 8.0
- 27180704
- Product description
- SK LCU DX split cooling unit 3 kW, refrigerant-based cooling of IT racks and Micro Data Centers, 2 x external units with inverter-controlled compressors, 1 x internal unit, redundant version
3311.491 LCU DX 3 kW, redundant
LCU DX split cooling unit, 3kW, redundant, consisting of an internal
unit (evaporator) and two external units (inverter-controlled cooling
units).
The internal unit is designed so that it can be installed in a 800 mm
wide VX IT server enclosure or in a Micro Data Centre.
It is constructed in IT-optimised design, so that the "front to back"
air routing of the 19" components is ideally supported.
The preferred area of application is in small to medium-sized locations,
in which the server racks are cooled directly - without cooling the
entire room.
The LCU DX internal unit is mounted laterally in the server enclosure or
in the Micro Data Centre and it forms a closed system with the latter.
The internal unit of the LCU DX extracts the warm server exhaust air
directly from the rear part of the enclosure and blows the cooled air
laterally in front of the 19" level.
The enclosure of the internal unit consists of powder coated sheet steel
in RAL 7035, in which a direct evaporator with two cooling circuits,
four EC radial fans, condensate tray and condensate discharge are
integrated.
The condensation discharge has to be provided on-site.
The devices are constructed in such a way that assembly can be carried
out in the IT server rack on the left or right.
In addition, two microprocessor controllers and a fault and operating
hours switch are located in the internal unit.
The reference variable that controls the device is the server air inlet
temperature.
This can be set at between 17 and 30°C on the remote operating units.
The operating units are installed in a 19" trim panel (3 U). This is
mounted on the rear 19" level of the VX IT rack or of the Micro Data
Centre.
The external sensor devices (2 items) belonging to the units are placed
near the front of the server.
The two external units with inverter-controlled compressors permit
stepless power adjustment, even in partial-load operation (1-3 kW).
In the normal state, one external unit is in operation. The fault and
operating hours switch allows a regular exchange between the two
external units, as well as a change-over in the event of a disruption or
a failure.
The connection between the internal unit and the two external units is
made by means of copper piping (2 cooling circuits), as well as two data
lines and two power supplies.
The internal device is supplied with voltage by the external devices.
R410a is used as a refrigerant.
The on-site installation and commissioning, the laying of refrigerant
lines, and the evacuation and filling of the system with refrigerant are
not included in the range of goods and services supplied. This work must
be performed by qualified personnel.
Technical specifications:
Useful cooling output 3 kW
Redundancy: Yes
Fans installed in the internal unit: 4
Reference variable: Server air inlet temperature pre-set at 22°C
Voltage supply: 230 V, 1~, N, PE, 50 Hz (2x)
Pre-fuse: 16 A (2x)
Refrigerant: R410a
Line length, max.: 30 m
Max. height difference (external unit): 12 m
Dimensions of the internal unit, W x H x D: 105 x 1550 x 820 mm
Dimensions of the external unit W x H x D: 810 x 558 x 310 mm (2x)
Weight of the internal unit: 48 kg
Weight of the external unit: 38 kg (2x)
Ambient temperature range of the outdoor units: -20°C to +45°C
LCU DX split cooling unit, 3kW, redundant, consisting of an internal
unit (evaporator) and two external units (inverter-controlled cooling
units).
The internal unit is designed so that it can be installed in a 800 mm
wide VX IT server enclosure or in a Micro Data Centre.
It is constructed in IT-optimised design, so that the "front to back"
air routing of the 19" components is ideally supported.
The preferred area of application is in small to medium-sized locations,
in which the server racks are cooled directly - without cooling the
entire room.
The LCU DX internal unit is mounted laterally in the server enclosure or
in the Micro Data Centre and it forms a closed system with the latter.
The internal unit of the LCU DX extracts the warm server exhaust air
directly from the rear part of the enclosure and blows the cooled air
laterally in front of the 19" level.
The enclosure of the internal unit consists of powder coated sheet steel
in RAL 7035, in which a direct evaporator with two cooling circuits,
four EC radial fans, condensate tray and condensate discharge are
integrated.
The condensation discharge has to be provided on-site.
The devices are constructed in such a way that assembly can be carried
out in the IT server rack on the left or right.
In addition, two microprocessor controllers and a fault and operating
hours switch are located in the internal unit.
The reference variable that controls the device is the server air inlet
temperature.
This can be set at between 17 and 30°C on the remote operating units.
The operating units are installed in a 19" trim panel (3 U). This is
mounted on the rear 19" level of the VX IT rack or of the Micro Data
Centre.
The external sensor devices (2 items) belonging to the units are placed
near the front of the server.
The two external units with inverter-controlled compressors permit
stepless power adjustment, even in partial-load operation (1-3 kW).
In the normal state, one external unit is in operation. The fault and
operating hours switch allows a regular exchange between the two
external units, as well as a change-over in the event of a disruption or
a failure.
The connection between the internal unit and the two external units is
made by means of copper piping (2 cooling circuits), as well as two data
lines and two power supplies.
The internal device is supplied with voltage by the external devices.
R410a is used as a refrigerant.
The on-site installation and commissioning, the laying of refrigerant
lines, and the evacuation and filling of the system with refrigerant are
not included in the range of goods and services supplied. This work must
be performed by qualified personnel.
Technical specifications:
Useful cooling output 3 kW
Redundancy: Yes
Fans installed in the internal unit: 4
Reference variable: Server air inlet temperature pre-set at 22°C
Voltage supply: 230 V, 1~, N, PE, 50 Hz (2x)
Pre-fuse: 16 A (2x)
Refrigerant: R410a
Line length, max.: 30 m
Max. height difference (external unit): 12 m
Dimensions of the internal unit, W x H x D: 105 x 1550 x 820 mm
Dimensions of the external unit W x H x D: 810 x 558 x 310 mm (2x)
Weight of the internal unit: 48 kg
Weight of the external unit: 38 kg (2x)
Ambient temperature range of the outdoor units: -20°C to +45°C