Lennox high-performance CRAH unit
12th March 2025
FRANCE: Lennox EMEA’s new ApX Series computer room air handling units designed specifically for high-performance data centre applications.
According to Lennox EMEA, the CRAH – ApX Series, complete with adaptable design for tailored data centre needs, provides hyperscale and co-location facilities with unparalleled cooling performance, efficiency and reliability.
The deployment of advanced cooling solutions is seen as critical to maintain optimal operating temperatures and reduce energy consumption in hyperscale data centres
The CRAH – ApX Series chilled-water data centre unit offers cooling capacity from 20kW to 500kW in both single and “back-to-back” arrangements.
Featuring industry recognised controls and latest generation components, the modular design is said to ensure seamless integration into various data centre layouts, including raised floor and hard floor configurations. Options are available for 24 different size units.
Matt Evans, CEO of Lennox EMEA Data Centre Solutions, insists the CRAH – ApX Series takes a different design path to that of conventional solutions: “It offers a number of robustly engineered standard case sizes, an approach that allows us to tailor the design. Internally, components such as the size and type of fans, the design of heat exchangers, optimally configured piping layouts, valves, and specific control requirements, can all be designed to suit the individual data centre. This flexibility and adaptability delivers a more tailored way of meeting precise application requirements, rather than simply offering the nearest-fit solution.”
Th new units incorporate Lennox EMEA’s heat exchanger which is said to ensure optimal performance by tailoring coil geometry, circuiting, fin type, material and pitch.
EC fan technology is also used across the product-set with a range of sizes and options including integrated active power factor correction for control of overall total harmonic distortion.
With standard or advanced touchscreen control system as an option, the CRAH – ApX Series provides wholistic monitoring, performance management, and integration with data centre infrastructure solutions.
The range comes equipped with industry standard networking protocols to control, monitor, and report operations such as fan speed, cooling performance, and alarms in real time.
Integrated fail-safe mechanisms enable uninterrupted operation in the event of power failures, meeting the critical uptime requirements of data centres. The CRAH – ApX Series includes automatic transfer switches and ultra-capacitor back-up, enabling immediate fan restart following power restoration.
Integrated unit-to-unit network communication is featured as standard allowing for advanced control functionality including teamwork modes, standby rotation, cascade operation, auto restart delay and rotatingmaster function, all without the need of a dedicated sequencing panel.
