E.EXHAUST REQUIREMENTS

1.General Exhaust Ductwork Information

Exhaust ductwork should be designed and installed by a qualified professional. Improperly sized ductwork will create excessive back pressure which results in slow drying, increased use of energy, overheating of the dryer, and shutdown of the burner by the airflow (sail) switches, burner hi-limits, or basket (tumbler) hi-heat thermostats.

CAUTION: DRYER MUST BE EXHAUSTED TO THE OUTDOORS.

CAUTION: IMPROPERLY SIZED or INSTALLED EXHAUST DUCTWORK CAN

CREATE A POTENTIAL FIRE HAZARD.

The ductwork should be laid out in such a way that the ductwork travels as directly as possible to the outdoors with as few turns as possible. Single or independent dryer venting is recommended.

Horizontal Venting:

When single dryer venting is used, the length of ductwork from the dryer to the outside exhaust outlet, must not exceed 15 feet (4.6 meters). The minimum diameter of this ductwork must be at least 8-inches (20.32 cm). In the case of multiple (common) dryer venting, the distance from the last dryer to the outside exhaust outlet must not exceed 15 feet (4.6 meters). The shape of the ductwork is not critical so long as the minimum cross-sectional area is provided. It is suggested that the use of 90° turns be avoided; use 30° and/ or 45° angles instead. The radius of the elbows should preferably be 1-1/2 times the diameter of the duct. Including basket (tumbler)/dryer elbow connections or elbows used for outside protection from the weather, no more than two (2) elbows should be used in the exhaust duct run. If more than two (2) elbows are used, the cross-sectional area of the ductwork must be increased. ALL ductwork should be smooth inside with no projections from sheet metal screws or other obstructions, which will collect lint. When adding ducts, the duct to be added should overlap the duct to which it is to be connected. ALL ductwork joints must be taped to prevent moisture and lint from escaping into the building. Inspection doors should be installed at strategic points in the exhaust ductwork for periodic inspection and cleaning of lint from the ductwork.

Vertical Venting:

When single dryer venting is used, the length of the ductwork from the dryer to the outside exhaust outlet must not exceed 15 feet (4.6 meters). The minimum diameter of this ductwork must be at least 8-inches (20.32 cm). In the case of multiple (common) dryer venting, the distance from the last dryer to the outside exhaust outlet must not exceed 15 feet (4.6 meters). The shape of the ductwork is not critical so long as the minimum cross-sectional area is provided. It is suggested that the use of 90º turns be avoided; use 30º and/or 45º angle instead. The radius of the elbows should preferably be 1-1/2 times the diameter of the duct. ALL ductwork should be smooth inside with no projections from sheet metal screws or other obstructions, which will collect lint. When adding ducts, the duct to be added should overlap the duct to which it is to be connected. ALL ductwork joints must be taped to prevent moisture and lint from escaping into the building. Inspection doors should be installed at strategic points in the exhaust ductwork for periodic inspection and cleaning of lint from the ductwork.

IMPORTANT: Exhaust back pressure measured by a manometer in the exhaust duct must not exceed 0.3 inches (0.74 mb) of water column (W.C.).

IMPORTANT: Minimum ductwork diameter for horizontal venting is 8-inches (20.32 cm) and for vertical venting the minimum is 8-inches (20.32 cm).

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American Dryer Corp ML-55HS installation manual Exhaust Requirements, Create a Potential Fire Hazard
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ML-55HS specifications

The American Dryer Corp ML-55HS is a high-performance hand dryer that offers efficient and effective drying solutions for commercial and public restrooms. Known for its innovative design and advanced technology, the ML-55HS is a popular choice among facility managers looking for a reliable and eco-friendly drying option.

One of the key features of the ML-55HS is its powerful motor. With a speed of up to 28,000 RPM, this hand dryer can dry hands in as little as 10 to 15 seconds, significantly reducing wait times in busy facilities. This high speed also helps to minimize energy consumption, making the dryer not only time-efficient but also cost-effective.

The dryer is equipped with a built-in HEPA filter that captures 99.97% of airborne particles down to 0.3 microns. This means that users can enjoy not only the convenience of a fast-drying hand-drying solution but also a hygienic one, preventing the spread of germs and bacteria in shared spaces. The HEPA filter is easy to replace, ensuring ongoing efficiency and cleanliness.

Another notable aspect of the ML-55HS is its adjustable speed and heat settings. This versatility allows users to customize their drying experience based on their preferences, ensuring optimal comfort for everyone—regardless of the season or environment. Such adaptability also helps to further conserve energy.

The design of the ML-55HS is both sleek and durable, made from high-quality materials that can withstand the rigors of daily use in high-traffic areas. Its vandal-resistant features, including a tamper-proof cover and concealed screws, ensure that the dryer maintains its integrity even in challenging environments.

Moreover, the ML-55HS operates quietly, making it suitable for environments where noise reduction is a priority. Its low sound levels contribute to an overall pleasant restroom experience for users, promoting peace and comfort.

With an array of finishes available, the machine can seamlessly blend into various restroom designs while providing an eco-friendly alternative to traditional paper towels. The ML-55HS not only enhances user experience but also supports sustainability efforts by significantly reducing paper waste.

In conclusion, the American Dryer Corp ML-55HS brings together speed, efficiency, hygiene, and durability in a compact design, making it an excellent choice for any facility aiming to improve their restroom's functionality while catering to modern demands.
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