General Safety Information

	PN 453283
®	Series L: Models LB, LBP, LD, and LDP
	Low Silhouette Centrifugal Roof Exhaust Fans

Installation, Operation and Maintenance Manual

Please read and save these instructions for future reference. Read carefully before attempting to assemble, install, operate or maintain the product described. Protect yourself and others by observing all safety information. Failure to comply with instructions could result in personal injury and/or property damage!

Series L Exhaust Fans

Greenheck’s Series L, low silhouette, models LD, LB, LDP, and LBP centrifugal roof exhaust fans provide the industry’s best performance and durability for general clean air applications. Series L exhaust fans have the broadest performance in the industry, up to 1.25 in. wg (311 Pa) and 37,500 cfm (63,713 m3/hr).

The severe duty models LDP and LBP are far superior to any centrifugal roof exhaust fan currently in the market. Specifically designed for applications with extremely high structural design load requirements. Designed with structural

steel supports and ESD-603D louver blades, the severe duty louver enclosure (SDLE) may be used in any application which requires a fan to endure high winds with the potential of wind blown debris. Miami-Dade notice of acceptance number 03-0422.05.

Only qualified personnel should install this fan. Personnel should have a clear understanding of these instructions and should be aware of general safety precautions. Improper installation can result in electric shock, possible injury due to coming in contact with moving parts, as well as other potential hazards. Other considerations may be required

if high winds or seismic activity are present. If more information is needed, contact a licensed professional engineer before moving forward.

DANGER

Always disconnect, lock and tag power source before installing or servicing. Failure to disconnect power source can result in fire, shock or serious injury.

CAUTION

When servicing the fan, motor may be hot enough to cause pain or injury. Allow motor to cool before servicing.

CAUTION

Precaution should be taken in explosive atmospheres.

1.Follow all local electrical and safety codes, as well as the National Electrical Code (NEC) and the National Fire Protection Agency (NFPA), where applicable. Follow the Canadian Electric Code (CEC) in Canada.

2.The rotation of the wheel is critical. It must be free to rotate without striking or rubbing any stationary objects.

3.Motor must be securely and adequately grounded.

4.Do not spin fan wheel faster than max cataloged fan RPM. Adjustments to fan speed significantly effects motor load. If the fan RPM is changed, the motor current should be checked to make sure it is not exceeding the motor nameplate amps.

5.Do not allow the power cable to kink or come in contact with oil, grease, hot surfaces,

or chemicals. Replace cord immediately if damaged.

6.Verify that the power source is compatible with the equipment.

7.Never open access doors to a duct while the fan is running.

Series L: Models LB, LBP, LD, and LDP

LBP, LD AND LDP, Series L Models LB specifications

Greenheck's Fan Series L Models—LB, LD, LDP, and LBP—are engineered to provide efficient and reliable ventilation solutions for commercial and industrial applications. These fan models stand out due to their high-performance capabilities, advanced technology, and customizable features that meet various system requirements.

One of the key characteristics of the L Model series is its construction quality. These fans are built using robust materials that ensure longevity and durability, making them suitable for harsh operating environments. Additionally, the aerodynamic design of the fan blades enhances airflow while minimizing noise, leading to a quieter operation, which is particularly beneficial in places like schools, hospitals, and office buildings.

The LB series is particularly designed for general ventilation applications and incorporates a broad range of features. It includes a wide selection of fan sizes and capacities, allowing businesses to select the ideal model that suits their specific airflow and pressure needs. The inline belt drive setup is adjustable, offering flexibility in performance tuning based on application requirements.

For those with more stringent noise requirements, the LD model is specifically engineered for low-noise operations. The LD series incorporates acoustic materials and optimized blade designs that significantly reduce operational noise levels, making it perfect for noise-sensitive environments, such as healthcare facilities.

On the other hand, the LDP model emphasizes high-performance static efficiency. This model is particularly effective for applications requiring high pressure. With direct drive motors, the LDP fans deliver reliable performance with reduced maintenance needs. The design minimizes failure areas, making it a dependable choice over traditional belt-driven fans.

Lastly, the LBP fans are designed for building pressure applications, making them ideal for spaces that require controlled environments or negative and positive pressure situations. The robust motor options provided in this series enhance operational capabilities across various conditions.

All models in the Greenheck L Series come equipped with advanced technologies, including variable frequency drive (VFD) compatibility. This feature enables users to adjust fan speed based on changes in airflow requirements, further improving energy efficiency and reducing operating costs.

Overall, the Greenheck Fan Series L Models—LB, LD, LDP, and LBP—represent a culmination of advanced engineering and user-centric design, delivering superior performance, energy efficiency, and durability tailored to a wide range of ventilation needs across various industries.