Why Choose the Rittal SK 3313.460 LCP Inline DX/FC?
The Rittal SK 3313.460 is a high-performance Liquid Cooling Package LCP Inline DX/FC designed for precise, energy-efficient cooling of server racks and IT infrastructure. As part of the advanced Rittal LCP Inline DX/FC series, it combines direct-expansion refrigeration with a water/glycol free-cooling circuit to maximise efficiency across changing ambient conditions.
The unit uses a hybrid cooling concept in which the free-cooling heat exchanger operates ahead of the DX heat exchanger, allowing the system to exploit available free-cooling capacity before activating compressor-based refrigeration. Its internal controller automatically manages FC, mixed and DX operating modes, while EC fans and an inverter-controlled compressor continuously adapt cooling performance to actual IT load.
With a maximum cooling output of 35 kW, a three-phase 380–480 V AC, 50/60 Hz supply and dimensions of 600 × 2000 × 1000 mm (W × H × D), the SK 3313.460 delivers substantial cooling capacity in a rack-sized footprint. The unit is designed for flush installation alongside VX IT racks and works with a separate Rittal hybrid condenser to reject heat and enable free-cooling operation.
Key Advantages
- High-performance 35 kW hybrid DX/free-cooling IT cooling unit.
- Combines direct expansion and water/glycol free cooling for improved energy efficiency.
- 8–35 kW modulation range adapts cooling output to changing IT loads.
- Automatic control between FC, mixed and DX operating modes.
- Efficient EC fan technology with linear fan control.
- Inverter-controlled compressor provides precise demand-based refrigeration.
- Integrated SNMP over Ethernet monitoring supports networked data centre management.
- Flush installation alongside compatible IT racks optimises data centre floor space.
Key Features
- Rittal LCP Inline DX/FC series.
- 35 kW maximum cooling output.
- 8–35 kW cooling modulation range.
- Three EC fan modules.
- Maximum air throughput of approximately 9,900 m³/h.
- Three-phase 380–480 V AC, 50/60 Hz rated supply.
- Hybrid DX and water/glycol free-cooling system.
- R410A refrigerant for the DX circuit.
- Integrated SNMP card for direct Ethernet monitoring.
- Linear fan control with inverter-controlled compressor.
- Fans may be replaced while the cooling system remains operational.
- Designed for flush installation within a bayed VX IT enclosure suite.
Hybrid DX and Free Cooling for Data Centre Infrastructure
The Rittal LCP Inline DX/FC combines two complementary cooling methods in one rack-sized unit. When ambient conditions allow, the water/glycol free-cooling circuit removes heat with reduced reliance on mechanical refrigeration. If additional capacity is required, the system automatically transitions through mixed operation to full direct-expansion cooling.
This hybrid operating principle helps reduce compressor runtime while maintaining precise thermal control for sensitive IT equipment. Hot server exhaust air is drawn from the rear aisle, cooled inside the LCP and delivered back towards the room or cold aisle, while absorbed heat is rejected through a separately installed hybrid condenser.
Typical Applications
- Enterprise and colocation data centres.
- High-density server rack cooling.
- Edge computing and distributed IT facilities.
- Server rooms and network equipment rooms.
- VX IT rack and enclosure installations.
- Data centres seeking reduced mechanical cooling energy consumption.
- IT environments requiring hybrid free-cooling and DX operation.
