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Summary of Contents for Rittal LCU DX Series
- Page 1 LCU DX 3311.490 So For all units with the following serial numbers: 3311.491 So – 2021HA300S(R)9-0901 – … – 2021HA300S(R)9-0935 Assembly and operating instructions...
- Page 2 Foreword Foreword Dear Customer, Thank you for choosing a Rittal Liquid Cooling Unit DX (also referred to hereafter as "LCU DX"). This documentation applies to the following devices in the LCU DX series (DX = Direct Expansion): – LCU DX 3 kW single –...
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Page 3: Table Of Contents
Accessories ........42 Installation ........16 Glossary ......... 43 General information ........16 Notes on pipework ........16 Customer service addresses ..44 Connecting the condensate discharge ..18 Electrical connection ........18 6.4.1 General .............. 18 Rittal LCU DX... -
Page 4: Notes On Documentation
The declaration of conformity has been issued by the proaches. Also indicates situations which company Rittal GmbH and is included with the supply of may result in material damage. the LCU DX. ... -
Page 5: Safety Instructions
2 Safety instructions Safety instructions Danger! Risk of poisoning from refriger- The devices in the LCU DX series are developed and ant gases created under the influence of manufactured with due regard for all safety precautions. heat. Nevertheless, the unit still poses a number of unavoida- When carrying out welding and solder- ble dangers and residual risks. -
Page 6: Service And Technical Staff
Note: Rittal offers leak testing of the device as a service. Caution! Risk of malfunction or damage! Installation, and in particular the laying 2.3.1... -
Page 7: F-Gas Regulation
The LCU DX fulfils the requirements of EU Directive 2011/65/EC on the Restriction of Use of Certain Hazard- ous Substances in Electrical and Electronic Equipment (RoHS) of 8 June 2011. Note: Corresponding information about the RoHS Directive may be found on our website at www.rittal.com/RoHS. Rittal LCU DX... -
Page 8: Device Description
(U) of the 482.6 mm (19") level must be sealed with blanking plates, which are available as Rittal accessories (see section 13 "Accessories"). If the LCU DX is used to cool a TS IT server enclosure, it is important that this is sealed, by fitting the enclosure with side panels, roof and gland plates. -
Page 9: Device Assembly
The condenser is comprised of copper core pipes with aluminium mem- Rittal LCU DX... -
Page 10: Refrigerant Lines And Electrical Pilot Wires
Tab. 2: Scope of supply of an LCU DX, "redundant" variant – Improper rectification of malfunctions – Use of replacement parts which are not authorised by Rittal GmbH & Co. KG – Non-static use, e.g. on moving or vibrating machines Rittal LCU DX... -
Page 11: Transport And Handling
Note: Damage and other faults, e.g. incomplete de- livery, should be reported immediately, in writing, to the shipping company and to Rittal GmbH & Co. KG. Place the unit in its intended location. Rittal LCU DX... -
Page 12: Assembly And Siting
If the LCU DX is fitted on difference LCU DX 6.5 kW: 25 m the left-hand side of the enclosure, the refrigerant lines are routed out of the evaporator coil enclosure at the Tab. 3: Distances and height differences bottom. Rittal LCU DX... -
Page 13: Mounting The Internal Unit
– TS punched section with mounting flange 23 x 73 mm for enclosure depth 1000 mm: 8612.500, packs of 4 – TS punched section with mounting flange 23 x 73 mm for enclosure depth 1200 mm: 8612.520, packs of 4 Rittal LCU DX... -
Page 14: Mounting The External Unit
Central position on the opposite side Depending on the components installed by the custom- er (thermal loads, outlet direction of hot air etc.), it may also be expedient to position it elsewhere according to the individual case. Rittal LCU DX... - Page 15 Attach the external unit to the base plate to avoid the risk of tipping over. Fig. 8: Attachment points for external unit 4 x M10 plugs per external unit Distance > 600 mm Rittal LCU DX...
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Page 16: Installation
(intake gas line). Oil could collect here, or in the case of the liquid line, gas bubbles could form. Rittal LCU DX... - Page 17 The manufacturer must select a test method which al- lows suitable results to be achieved in accordance with the requirements outlined below. Connections must be checked with a detector or using a technique with a detection sensitivity as described in Rittal LCU DX...
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Page 18: Connecting The Condensate Discharge
4. The additional fill volume or the new total fill volume The unit may only be connected after the should be noted on the rating plate and operating aforementioned personnel have read manual. this information! Use only insulated tools. Rittal LCU DX... -
Page 19: Connecting The External Unit
1. Inspect the documents. 2. Check the safety switchgear for pressure limiting to ensure that the safety switchgear for pressure limit- ing is operational and correctly installed. Fig. 10: Dimensions for removing the rubber sheathing and in- sulation Rittal LCU DX... -
Page 20: Installing The Server
TS frame using an angle grinder or other suitable tool. sure with an air baffle plate (see section 13 "Accesso- ries"). Fig. 12: Cut-out in the air baffle plate TS frame Cut-out for TS frame Air baffle plate Rittal LCU DX... - Page 21 LCU DX. Cut the foamed plastic to the required size. Fig. 14: Partitioning with foamed plastic pieces on the side of the LCU internal unit Partitioning above Partitioning inside Partitioning below Rittal LCU DX...
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Page 22: Operation
In the "single" version, there is one ing a power failure or if the minimum cooling load is un- such control and display device installed, and in the "re- dercut. dundant" version there are two. Rittal LCU DX... -
Page 23: Switching The Lcu Dx On And Off
Observe the manufacturer's information on temperature settings for the components built into the server enclo- sure. We recommend a setting within the range 22 °C– 25 °C. Because the LCU DX cannot actively regulate hu- Rittal LCU DX... -
Page 24: Troubleshooting
The corresponding fault code may be read from the 2-digit LCD display. Note: For technical queries, or if servicing is re- quired, please contact Rittal using the ad- dresses shown in section 15 "Customer service addresses". List of error messages 8.2.1... -
Page 25: Inspection And Maintenance
F-gas regulation (see section 2.3.3 "F-gas regulation" and section 2.3.4 "Chemicals – Climate Protection Ordinance"). Note: At an ambient temperature of 40 °C, the nominal service life of the built-in fan is 40,000 operating hours. Rittal LCU DX... -
Page 26: Storage And Disposal
+50 °C during stor- age. During storage, both the internal as well as the external unit must stand upright. Disposal can be performed at the Rittal plant. Please contact us for advice. Caution! Risk of environmental contami- nation! -
Page 27: Technical Specifications
IP protection category IEC 60529 IP 20 IP X4 Noise level [dB (A)] 65 (distance 1 m) 40 (Open air above reflective flooring, distance 10 m) Colour RAL 7035 White Tab. 6: Technical specifications for the LCU DX 3 kW Rittal LCU DX... -
Page 28: Lcu Dx 6.5Kw
IP protection category IEC 60529 IP 20 IP X4 Noise level [dB (A)] 66 (distance 1 m) 40 (Open air above reflective flooring, distance 10 m) Colour RAL 7035 White Tab. 7: Technical specifications for the LCU DX 6.5 kW Rittal LCU DX... -
Page 29: Information About The Refrigerant
-3 K and +4 K. A fluctuation period lasts one to two min- utes. On average, the temperatures at the air outlet of To avoid damage to the device, Rittal prescribes the use the internal unit are within the tolerance of ±2 K. -
Page 30: Lcu Dx 3 Kw
Tab. 13: Exterior temperature 35 °C Exterior temperature [°C] Setpoint [°C] ± 2 K Cooling output [kW] min./max. 1.00 3.50 1.00 3.50 1.00 3.50 Power consumption [kW] 1.02 1.45 0.97 1.52 0.97 0.68 Tab. 14: Exterior temperature 44 °C Rittal LCU DX... -
Page 31: Lcu Dx 6.5 Kw
Tab. 19: Exterior temperature 35 °C Exterior temperature [°C] Setpoint [°C] ± 2 K Cooling output [kW] min./max. 3.00 4.00 3.00 4.00 3.00 5.00 Power consumption [kW] 1.66 1.80 1.72 1.96 1.80 2.25 Tab. 20: Exterior temperature 44 °C Rittal LCU DX... -
Page 32: Overview Drawings
Fig. 20: Overview drawing of internal unit LCU DX 3 kW and 6.5 kW ("redundant" version) Insert for data and supply cables Refrigerant line for "single" version (1 pair) Refrigerant line for "redundant" version (2 pairs) Condensate discharge Rittal LCU DX... -
Page 33: Dimensions Of Internal Unit Lcu Dx 3 Kw And 6.5 Kw
11 Technical specifications 11.5.2 Dimensions of internal unit LCU DX 3 kW and 6.5 kW Fig. 21: Dimensions of internal unit LCU DX 3 kW and 6.5 kW Rittal LCU DX... -
Page 34: Ri Flow Chart Lcu Dx
External part Electronic Refrigerant, expansion valve liquid Shut-off valve Capillaries Capillaries Evaporator coil Condenser Special magnetic valve Schrader Refrigerant, valve with Accumulator 4-way valve special opening 0/I = 15/100 % Cooling Compressor Fig. 22: RI flow chart Rittal LCU DX... -
Page 35: Circuit Diagram
11 Technical specifications 11.7 Circuit diagram 11.7.1 Functional diagram, internal unit Fig. 23: Functional diagram, internal unit Rittal LCU DX... -
Page 36: Connection Internal Unit - External Unit, External Interfaces
11 Technical specifications 11.7.2 Connection internal unit – external unit, external interfaces Fig. 24: Connection internal unit – external unit, external interfaces Rittal LCU DX... -
Page 37: Circuit Diagram, External Unit Sk 3311.490 And
11 Technical specifications 11.7.3 Circuit diagram, external unit SK 3311.490 and SK 3311.491 Fig. 25: Circuit diagram, external unit SK 3311.490 and SK 3311.491 Rittal LCU DX... -
Page 38: Circuit Diagram, External Unit Sk 3311.492 And
11 Technical specifications 11.7.4 Circuit diagram, external unit SK 3311.492 and SK 3311.493 Fig. 26: Circuit diagram, external unit SK 3311.492 and SK 3311.493 Rittal LCU DX... -
Page 39: Functional Description Of Sensors
LCU DX unit in the cooling zone, at mid-height (fig. 6). It can be fastened to the 482.6 mm (19") mounting angle or to the frame of the TS IT server enclosure. This sensor is responsible for controlling the server inlet air temperature. Rittal LCU DX... - Page 40 11 Technical specifications Fig. 27: Overview diagram of the sensor positions Rittal LCU DX...
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Page 41: Spare Parts
Item Qty. / Packs of Evaporator coil control board Display Compressor Inverter motherboard Electronic expansion valve Evaporator coil fan Dixell (evaporator coil) Temperature sensor hot/cold air Refrigerant filter Tab. 21: List of spare parts – LCU DX Rittal LCU DX... -
Page 42: Accessories
Qty. / Packs of Remarks Refrigerant pipe kit Refrigerant pipe kit 20 m, insulated, for LCU DX 3 kW 3311.495 Refrigerant pipe kit 20 m, insulated, for LCU DX 3311.496 6.5 kW Tab. 22: List of accessories – LCU DX Rittal LCU DX... -
Page 43: Glossary
Multiple servers normally communicate with one an- other and in the network using switches. Because as many inputs as possible are located on the front side of switches, they frequently have an air- flow from the side, not "front to back" cooling. Rittal LCU DX... -
Page 44: Customer Service Addresses
Customer service addresses For technical queries, please contact: Tel.: +49(0)2772 505-9052 E-mail: info@rittal.de Homepage: www.rittal.com For complaints or service requests, please contact: Tel.: +49(0)2772 505-1855 E-mail: service@rittal.de Rittal GmbH & Co. KG Auf dem Stützelberg 35745 Herborn Germany Rittal LCU DX... - Page 45 Notes Rittal LCU DX...
- Page 46 Notes Rittal LCU DX...
- Page 47 Notes Rittal LCU DX...
- Page 48 ◾ Climate Control ◾ IT Infrastructure ◾ Software & Services You can find the contact details of all Rittal companies throughout the world here. www.rittal.com/contact RITTAL GmbH & Co. KG Auf dem Stuetzelberg · 35745 Herborn · Germany Phone +49 2772 505-0...
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