Fresh air AHU for HVAC system

 Features:-  Fresh air AHU for HVAC system 

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.

Excellent Hermetization Heat Insulation Property

The box and the panel are connected using embedded spring clamp, thus facilitating maintenance and ensuring
low air leak rate. When the internal negative pressure is 1000Pa, the air leak rate can be as low as 1% (level
B air leak rate of EN1886).
For the units the panel thickness of which is 25mm and 30mm, the unit panels are packed up in strong and
heat-insulating UPVC plastics, thus avoiding direct contact between heat-conductive parts. Therefore, cold
bridge and refrigeration capacity loss are completely eliminated.

Filter:

„ Primary efficiency filter: folding panel; 2 inches thick; non-woven fabric filtering screen; G3 filtering efficiency
(80-90% Arrestance).
„ Medium efficiency filter: bag type; non-woven fabric filtering screen; F5 filtering efficiency (80-90% Dust-
spot).
„ High Medium/sub-high efficiency filter: super-thin fiberglass filtering screen; F7~F9 filtering efficiency (80-
95% Dust-spot).
„ High efficiency filter: if you need to installed sub-high or high efficiency filter for your composite air conditioning
unit, please contact McQuay directly.
The resistance of the filter is somewhere between the initial resistance and the final resistance. Initial
resistance refers to the resistance of a non-contaminated filter.Final resistance refers to the air resistance of
a filter which is contaminated and needs to be cleaned or discarded. The value of final resistance depends
on the cleanness the environment and air in which the air conditioner operates.
Besides standard configuration, McQuay also provides differential pressure gauges and switches for filters.
The differential pressu re switch can be used to control the differential pressure alarm of the filter.
Panel-type filters and bag-type filters have the same cross-sectional area, but not the same thickness.
Panel-type filters are 2 inches thick. The framework of bag-type filters is 1 inch. The length of the bag is 15
inches.

Cooling and Heating Coil

„ The coil features a new type of fins which can greatly reduce air resistance and motor power consumption.
Five types of circuit designs can meet the requirements of different operating conditions, thus reducing
water resistance and improving heat-exchange efficiency.
„ The coil header is equipped with a drain valve and a bleed valve. the maximum operating pressure designed
for the coil is 1.7MPa.
„ For cooling coil,pitched design for the heat-insulated drain pan ensures smooth discharge of the condensate
water, keeping the drain pan dry.

Humidifier Introduction
High-pressure spray humidifier—equal-enthalpy humidifying; water distribution pipes and nozzles made of
stainless steel; high pressure spray; secure, reliable and energy saving.
Wet film humidifier—high saturation efficiency; space-saving; reducing total length of the unit; no water
handling; secure and reliable.
Dry steam humidifier—equal-temp humidifying; high humidifying efficiency; stainless steel material; handsome
appearance; corrosion proof.
Electrode humidifier—high humidifying efficiency; multiple control solutions for option.

Fan-of AHU
According to the air flow and static pressure requirement of the unit, the fan section may consist of one or
two centrifugal fans. The centrifugal fans can be categorized into forward curve and backward curve type.
All scrolling cases and reinforcing elements are made of zinc-plated steel plates. The impellers are strictly
balance-rectified. The fan is driven by several anti-static belts. The bearings of small fans are air-tight, and
need no lubricant oil. The bearings of large fans are plummer blocks which have self-regulating journals and
plummers that can be lubricated with oil. MDM units are equipped with fans of international brands which are
AMCA certified. Name-brand bearings and driving belts also helps enabling the unit to operate continuously
for a long time.

Most Economic Combination-AHU
This solution is able to blend air, and is suitable for applications requiring both comfort and energy-saving
features.

Specification:

Dimension:- Return air condition combined air handlint unit

Engineer available to service machinery overseas

Quality assurance lifetime:

• lifetime of outdoor units:  30 years 
• lifetime of parts:  18 mons-3 years
• Construction project lifetime:  6 mons

Tongxing Air Conditioning Technology Co.,Ltd.(referred to the Tongxing)is a central air conditioner sales and installation,accessories sales,centeal air conditioning repair ,cleaning services for the integration of science and technology enterprise,for office buildings,shopping malls,hotels,dance halls,stations,hospitals , factores and other central air conditioning system to provide integrated solutions.Company dedicated to the world's most advanced central air-conditioning system service concept to china,and work diligently pursue efforts to build the best central air-conditioning system service brand.
Tongxing has been pushing with Gree,Midea,Trane,Mcquay,AUX,Galanz and other well-known brand central air conditioning unit installatin,commissioning and maintenance , maintenance , cleaning services.With these well-known brands have established good relations of cooperation.In recent years,according to market demand with the launch of the extrusion duct Tongxing,phenolic duct,glass fiber and magnesium,fiberglass duct ,etc.,throughout the project in Henan has been used in the majonity of users praise,the company welcomes calls to sample inquiry,discussion ,and looks forward to become your loyal partner.

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