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Features
For years, McQuay international has earned a reputation for providing the industry’s various highest quality
and most technologically advanced air handling systems. Now McQuay is proud to introduce the new MDM
series air-handling unit. Inherited from the advantage of the earlier product experiences and introduced the
most up to date technology, the new McQuay air handling units is designed to meet the highest industry
standards. The new series AHU adopt modulus design and have more reasonable structure and more
flexible combination functional modules. It can widely apply to various situation where central air handling is
required such as emporium, hotel, commercial building and other stringent applications where clean and
conditioned air is essential such as surgical operating theatres and semi-conductors fabricating facilities, etc.
High-Strength
The new high-strength frame of each unit is fabricated from heavy gauge aluminium extrusion formed unto a
rigid construction and incorporating die-cast aluminium corner pieces. Besides the above, the double
skinned panel has special structure in it to strengthen the panel. The McQuay MDM Air Handling unit is
strong enough to perform at high pressures than typically bow panels on ordinary units.
Low Air Leakage Design Assures High Thermal And Filtration Efficiencies
The McQuay MDM Air Handling Unit has its unique spring steel slice design to incorporate the flame and the
panel. By the unique design the frame and panel can be incorporate more tightly to provide maximum
strength and prevent air leakage. Standard insulation is polyurethane foam frame members are tightly and
rigidly fixed together to provide the best insulating feature. The low leakage rates minimize the ingress of
unfiltered air and energy loss – to give you exceptional performance.
Excellent Thermal Barrier
All the frame and channels are insulated with the UPVC insulation gasket to create a thermal barrier
between the internal and the external panels. This design eliminates cold bridges to provide efficient thermal
performance and prevent the air handling units from sweating during operation.
Improved Indoor Air Quality
Designed to be as easy to maintain, as it is to install, the McQuay MDM Air Handling Unit offers extended
coil connections and hinged access doors, or lift off panels. Unit sections can be thoroughly cleaned to
reduce the potential for indoor air quality problems. In addition, the slopped and painted galvanized steel
cooling coil drain pan reduces the risk of algae and fungi build up and prevents corrosion. The glazed inner
surface assures that no fibers will be released into the air stream and no internal moisture will penetrate the
insulation to support microbial growth. All these insure the IAQ provided by McQuay MDM.
Internal Motor & Fan Isolation
To insure that noise and vibration are compatible with the intended use of the conditioned air space, good
acoustical and vibration blower and motor engineering practices should be applied during the early stages of
design. While most applications require vibration isolation, McQuay MDM Air Handlers are available with
factory installed internal isolation for all unit sizes. Internally isolated units feature internally mounted 1”
deflection spring isolators sized specifically for each fan wheel and motor size.
Internal fan and motor mounted on spring isolated galvanized steel base provides low noise operation and
minimum vibration transmission. Break out noise is further attenuated by the double-skinned panel
construction. Since internal isolation minimizes vibration at the source (fan and motor), there is seldom a
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