Last updated: 5 October 2026
TC-CDU-RM80: 80 kW in-rack coolant distribution unit (4U)
The TC-CDU-RM80 is an 80 kW in-rack coolant distribution unit (liquid-to-liquid CDU) in a standard 4U chassis. It fills the gap between the 50 kW and 100 kW in-rack models for racks running at 60–80 kW, and takes a 48 V DC supply from the rack power shelf.
What are the TC-CDU-RM80 80 kW in-rack CDU specifications?
| Heat exchange capacity | 80 kW |
| Primary fluid | Softened water |
| Primary supply / return | 35 / 45 °C |
| Secondary supply / return | 40 / 50 °C |
| Secondary fluid | PG25 |
| Secondary filtration | 100 µm |
| Connections | 1.5" tri-clamp, primary and secondary |
| Pumps | Dual pump |
| Dimensions W × L × H | 481 × 950 × 174 mm |
| Power supply | 48 V DC |
What is inside the TC-CDU-RM80 4U chassis?
- Full stainless steel pipework
- Centrifugal pump with automatic flow matching to the connected servers
- 1+1 cold-standby pump redundancy
- Active anti-condensation control
- 7-inch touch screen, built-in leak detection and automatic liquid replenishment
- Constant ΔP or constant flow control modes
- Dual power supply; Modbus RTU and TCP/IP
Where does the RM80 sit in the in-rack liquid-to-liquid CDU range?
ToneCooling supplies the TC-CDU-RM80 from China. ToneCooling Australia handles selection, AUD quotes, documentation and after-sales.
80 kW in-rack CDU questions
When does an 80 kW in-rack CDU make sense?
When a single rack runs at roughly 60–80 kW of liquid-cooled load and facility water is available at the rack. Below that, a 50 kW unit is usually enough. Above it, step up to a 100 kW in-rack unit or an in-row CDU.
What power supply does the TC-CDU-RM80 use?
48 V DC, typically taken from the rack power shelf. It has dual power supply inputs.
How is electrical compliance handled in Australia?
The electrical safety compliance pathway for Australia and New Zealand is confirmed per project at quotation.
Sources and standards referenced: ASHRAE TC 9.9 (data centre thermal guidelines); Open Compute Project cooling environments; Standards Australia (AS/NZS standards). Specifications on this page come from ToneCooling datasheets; project values are confirmed at quotation.