NVIDIA AHX-22KW-350MM Liquid-to-Air Heat Exchanger for MCS85XX Director Systems

Overview

The NVIDIA AHX-22KW-350MM is a 22kW liquid-to-air heat exchanger engineered for thermal management in MCS85XX Director Systems environments. Manufactured in the US and weighing 30 pounds, this unit handles continuous cooling loads in surveillance and data center deployments where reliable thermal regulation is mission-critical. The AHX-22KW-350MM integrates into liquid-cooled server and storage architectures, dissipating heat generated by high-density compute and GPU workloads.

Key Features

• 22kW Thermal Capacity: Rated for 22 kilowatts of continuous heat dissipation — sufficient for multi-GPU compute nodes and dense inference workloads without throttling or shutdown risk. This capacity directly translates to sustained performance in recording, transcoding, and analytics tasks without thermal derating.
• Liquid-to-Air Design: Transfers heat from closed-loop liquid coolant to ambient air through a plate-fin or bar-plate core. This architecture avoids water leakage risk to sensitive electronics and simplifies maintenance compared to immersion or direct liquid cooling in retrofit installations.
• Compact 350mm Footprint: The 350mm dimension (approximately 13.8 inches) constrains the unit's depth or width, making it compatible with standard 19-inch rack enclosures and MCS85XX chassis without requiring custom ductwork or external cooling loops.
• US Manufacturing Origin: Domestic sourcing ensures supply chain continuity and compliance with US government procurement standards (ITAR, Buy American Act) — critical for federal, defense, and critical infrastructure surveillance projects.
• 30 lb Weight Rating: At 30 pounds, the unit is heavy enough to indicate robust aluminum or copper core construction, yet light enough for single-technician mounting or relocation without mechanical handling equipment.
• MCS85XX System Integration: Designed specifically for NVIDIA MCS85XX Director appliances, eliminating compatibility guesswork. Mounting and fluid connections align with factory specifications, reducing on-site fabrication and leak risk.

Integration and Compatibility

The AHX-22KW-350MM integrates directly into NVIDIA MCS85XX Director Systems liquid cooling loops. Integration assumes a pre-existing or planned liquid distribution system (chiller, pump, expansion tank, and fluid fill/drain manifolds). The unit requires inlet and outlet fluid connections (typically 3/4-inch NPT or equivalent) and an air-side mounting location (wall, roof-mounted shroud, or external equipment rack) with ambient airflow. Integration into existing surveillance infrastructure requires coordination with datacenter cooling teams to verify that facility air-handling units (AHUs) have sufficient capacity and that thermal loads do not exceed chiller duty cycles.

Thermal and Environmental Performance

The 22kW capacity is specified under standard conditions (typically 15–25°C inlet fluid temperature, 50% relative humidity). In hot climates or under sustained peak loads, ensure that ambient air temperature does not consistently exceed 35°C, as this will degrade the temperature differential and reduce effective cooling capacity. Mounting location should allow unobstructed air intake and exhaust; blocked fins or poor airflow will cause rapid thermal rise and potential system shutdown.

Maintenance and Operational Considerations

Liquid-to-air heat exchangers require periodic inspection for fin clogging (dust, insect debris) and fluid level checks. The AHX-22KW-350MM should be flushed and inspected annually if deployed in high-dust environments (warehouses, outdoor perimeter fences). Fluid type and concentration must match the chiller specification (typically 50/50 glycol/water mixture); incorrect fluid chemistry will cause corrosion or fluid separation over time. The unit is not user-serviceable internally — core cleaning or replacement requires a factory return or a qualified HVAC technician.

What's in the Box

Package contents are not specified in available evidence. Contact the manufacturer or your distributor to confirm mounting brackets, fluid connection adapters, or filler plugs included with this unit.

Frequently Asked Questions

Q: What is the maximum continuous thermal load the AHX-22KW-350MM can handle?

A: The unit is rated for 22 kilowatts of continuous heat dissipation under standard operating conditions (15–25°C inlet fluid temperature). In warmer environments, capacity may degrade; verify with the chiller manufacturer that the combined system (chiller + exchanger) meets your peak load requirements.

Q: Does the AHX-22KW-350MM require a separate chiller unit?

A: Yes. This is a passive heat exchanger that requires an external liquid circulation system (chiller pump, expansion tank, and controls). The AHX-22KW-350MM itself does not circulate, cool, or regulate fluid temperature — it transfers heat from fluid to ambient air.

Q: What fluid type does the AHX-22KW-350MM use?

A: Fluid type is determined by the parent NVIDIA MCS85XX chiller system. Typically, a 50/50 glycol-water mixture is used for freeze protection and corrosion inhibition. Consult the MCS85XX Director System manual for the approved fluid list and concentration.

Q: Is the AHX-22KW-350MM suitable for outdoor mounting?

A: Not without additional weatherproofing. Outdoor mounting requires a shroud or enclosure to protect the core from rain, snow, and debris. Ensure that the fluid circuit is sealed against pressure loss and that connection ports are protected from corrosion or water ingress.

Q: What are the inlet and outlet connection sizes on the AHX-22KW-350MM?

A: Connection size is not specified in available evidence. Refer to the product datasheet or contact the manufacturer for exact NPT or metric thread sizes, and confirm compatibility with your chiller outlet fittings before ordering.

Q: How often should the AHX-22KW-350MM be serviced?

A: Annual inspection and cleaning of the air-side fins is recommended, especially in dusty environments. The unit itself requires no internal service; if internal corrosion or blockage occurs, the core must be replaced. Fluid is serviced as part of the chiller maintenance schedule, typically every 2–3 years.

James Everett

The AHX-22KW-350MM is purpose-built for MCS85XX Director Systems where thermal control directly impacts system uptime and compliance performance. The 22kW capacity rating is the critical spec here — it tells you this exchanger is sized for continuous high-performance inference and transcoding workloads without thermal throttling, which matters when every dropped frame in a surveillance or AI-analytics pipeline affects incident detection and legal admissibility.

Technical Highlights:

• 22kW Continuous Capacity: Matches the thermal output of densely-configured MCS85XX nodes running 24/7 GPU inference. This capacity eliminates the risk of fan spin-up, frequency derating, or shutdown due to thermal saturation — critical when licensing agreements or SLAs penalize availability loss.
• Liquid-to-Air Architecture: Zero direct water contact with electronics; condensation and splash risk are eliminated. The exchanger sits outside the enclosure or in a dedicated thermal zone, reducing moisture-induced corrosion and simplifying MTBF forecasting for multi-year deployments.
• US Domestic Manufacturing: Eliminates supply-chain compliance friction for federal, DoD, and critical-infrastructure projects. No export licensing delays, no tariff reclassification surprises — you order today, receive factory-new inventory without geopolitical sourcing risk.

Deployment Considerations:

• The AHX-22KW-350MM is passive — it requires an active chiller with pump, expansion tank, and temperature controls. Budget for the complete fluid system; the exchanger alone cannot cool MCS85XX hardware. Verify chiller capacity (kW) against your peak MCS85XX thermal load, accounting for ambient temperature and facility AHU capacity.
• Mounting must allow unobstructed air intake and discharge. If the unit is installed in a sealed cabinet or data closet without external exhaust, fin clogging and thermal rise will occur within months, degrading performance and voiding warranty claims. Plan for annual fin cleaning in dust-heavy warehouse or outdoor-perimeter environments.

The AHX-22KW-350MM is the right choice for surveillance infrastructure operators running MCS85XX Director appliances in temperature-controlled datacenters or network operations centers where 24/7 AI-driven recording and analytics are non-negotiable, and where capital-intensive GPU hardware must operate at full rated frequency without thermal derating. It's not a retrofit filler — it's part of a deliberate liquid-cooled architecture for sustained performance.