A L U M I N I U M M I C R O C H A N N E L H E AT E X C H A N G E R

In 2006, Carrier was the first to introduce microchannel (MCHE) technology in the Commercial Air Conditioning industry. Already used in the automobile and aeronautical industry for many years, MCHE heat exchangers are entirely made of aluminium. Since 2011, a new generation of microchannel is available: NOVATION ® . Extending microchannel technology, Carrier offers exclusive coating solutions for various corrosive environments.
Fins
Tubes
■
Superior corrosion resistance due to one-piece material construction when compared to conventional Cu/Al coils. This significantly increases corrosion resistance by eliminating the galvanic currents that are created when two different metals (copper and aluminium) come into contact in traditional heat exchangers.
■
Superior mechanical resistance due to microchannel manufacturing process.
■
Superior reliability assembly
Coil brazed automatically in oven. Only one braze compared to conventional coils (up to 300 manual braze connections).
■
Proven technology used in the automobile and aeronautical industries for decades.
Manifold
Microchannel
■
Up to 50% refrigerant charge reduction vs. traditional Cu/Al coils.
■
Better thermal performance vs. Cu/Al coils
Better efficiency and lower air pressure drop vs. Cu/Al coils.
■
Light weight reducing CO
2
environmental impact during transport.
■
Thinner to reduce air pressure losses by 50% and fan energy consumption.
■
Reduced fouling maintaining unit performance over the time.
* The warranty period for microchannel coils is 3 years from the date of factory assembly completion. Refer to contract for details on warranty coverage.
(Metal washer patent)
Zn-Ni plated steel
Copper tube
Metal washer
+ EPDM
Aluminium
ELIMINATE GALVANIC CORROSION
30RBS 30RB 30RBM / 30RBP 30XA / 30XAV

M I C R O C H A N N E L C O I L S S t a n d a r d
MCHE coils are constructed utilizing all-aluminum alloys with brazed fin construction. MCHE standard coils are suitable for any non corrosive environments. In addition to standard MCHE coils,
Carrier offers Enviro-Shield ® and Super Enviro-Shield ® anti-corrosion protections as options to increase the application range of MCHE coils to mildly and severe corrosive environments.
E n v i r o - S h i e l d ® c o a t i n g
Enviro-Shield ® coating provides protection against many corrosive atmospheres.
Enviro-Shield ® is a nano-scale conversion coating which uniformly covers the entire surface of the coil. The coating is integral to the MCHE and will not flake or lose adhesion. The thin coating causes no variation in heat transfer or air flow.
Enviro-Shield ® utilizes corrosion inhibitors which actively arrest oxidation due to environmental or mechanical damage.
With Enviro-Shield ® protection, corrosion resistance of the MCHE coil is doubled without any impact on heat exchange performance.
Carrier Coil
Treatment is applied by
immersion (not spray or a vernish) which provides a reliable and complete protective
coverage.
Cleaning Water
Rinse
Enviro- shield ®
Conversion
Coating
Final
Rinse
S u p e r E n v i ro - S h i e l d ® c o a t i n g
Super Enviro-Shield ® coating provides superior protection against extreme corrosive atmospheres. Super Enviro-Shield ® MCHE coils have an extremely durable and flexible epoxy coating uniformly applied over all coil surfaces for complete isolation from the contaminated environment. A consistent coating is achieved through a precisely controlled electro coating process that bonds a thin, impermeable epoxy coating to the specially prepared coil surfaces.
Mastering the technology, integrated manufacturing:
Coil treatments directly applied during MCHE final manufacturing process before equipment assembly.
Transparent
Corrosion resistance* x 2
Degreasing Water
Rinse
E-Coat Final
Rinse
Oven
Bake
UV
Topcoat
*Testing by Carrier : Result of ASTM G85 and patented Carrier Marine accelerated corrosion testing.
ASTM G85, A3 – 600 hours, Proprietary Immersion Test – 2500 hours, Patented CM1 Salt Fog Test – 2000 hours, Beachfront Exposure – 2 years
Black
Corrosion resistance* x 4

corrosive environment
Low
Severity of environmental factors
Severe
125 µg/m 3
50 µg/m 3
20 µg/m 3
MCHE COILS
Standard ✔
Enviro-Shield ®
MCHE Coils ✔
Super
Enviro-Shield ®
MCHE Coils
✔
*SO2 levels in cities with > 50 000 habitants
corrosive environment
Low
Severity of environmental factors
Severe
corrosive environment
Severe
Severity of environmental factors
Low
in ppm (parts per million)
100 ppm
50 ppm
0 ppm
MCHE COILS
Standard ✔
Enviro-Shield ®
MCHE Coils ✔
Super
Enviro-Shield ®
MCHE Coils
✔
> 3 km
400 m
3 km
MCHE COILS
Standard
Enviro-Shield ®
MCHE Coils
✔
✔
Super
Enviro-Shield ®
MCHE Coils
✔
Information in those tables are provided as a guide; contact a Carrier Sales Engineer for a software selection.

Carrier Service is committed to protect your investment while, at the same time, reducing your operating costs.
Carrier Service proposes a comprehensive and sustainable preventive maintenance program, to protect the critical components of your chiller: regular inspections and preventive maintenance are key to ensure and enhance the efficiency and reliability advantages that microchannel ultimate technology can offer.
Moreover in situations where the environment can lead to excessive or early corrosion, Carrier comprehensive solutions provide a unique opportunity to:
■ Increase the life of coils
■ Prevent premature breakdowns
■ Reduce energy consumption
■ Improve efficiency of operations
Carrier Service coverage spans more than 180 countries, with regional and local branches throughout Europe.
Top-trained technicians are accessible 24 hours a day, 365 days a year, ready to respond to your requests and address your needs.
■ Experienced and knowledgeable technicians
■ Consolidated and efficient maintenance process
■ First class factory certified products
AUTHORIZED
Carrier Service teams propose a unique expertise built on a 110 years experience by your side.
Specific cleaning and repair kits have been developed by Carrier to ensure appropriate maintenance and efficiency of Novation ®
Microchannel.
To learn more about Carrier Service Solutions, please contact your Carrier representative or visit www.carrier.com

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The Carrier service delivery model maintains a reputation for high customer satisfaction and delivers service excellence with strong communication channels, industryleading technicians, continuous improvement of contracts and a highly experienced management team.
Carrier is a company of ideas, committed to research and development, whose founder inspires the company to reach the next innovative, powerful and marketable idea.
Carrier delivers global solutions across the broadest range of heating, cooling and refrigeration applications. With a proven track record of leadership and industry expertise, we are here to meet your needs with our portfolio of market-leading products and services.
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