Model NYD & NYB

	PN 463277
®	Model NYD & NYB
	Tamper-Resistant Centrifugal Roof Exhaust

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!

Model NYD

Direct Drive

Model NYD is a direct drive centrifugal roof exhaust fan. These fans are specifically designed for applications where tamper resitance is necessary. Performance capabilities range up to 3,000 cfm (5,097 m3/hr) and up to 1.0 in. wg

(249 Pa) of static pressure. The maximum continuous operating temperature for fan sizes 075-140 is 180°F (82°C). NYD fans are available in six sizes with nominal wheel diameter ranging from 8 to 14 inches (203 to 356 mm) (075 - 140 unit sizes). Each fan shall bear a permanently affixed manufacturer’s engraved metal nameplate containing the model number and individual serial number.

Model NYB

Belt Drive

Model NYB is a belt drive centrifugal roof exhaust fan. These fans are specifically designed for applications wheretamperresistanceisnecessary. Performance capabilities range up to 8,000 cfm (13,592 m3/hr) and up to

1.0in. wg (249 Pa) of static pressure. The maximum continuous operating temperature is 180°F (82°C). NYB fans are available in four sizes with nominal wheel diameter ranging from 11 to 24 inches (279 to 610 mm) (100 - 240 unit sizes). Each fan shall bear a permanently affixed manufacturer’s engraved metal nameplate containing the model number and individual serial number.

General Safety Information

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.

Models NYD & NYB • Tamper-Resistant Centrifugal Roof Exhaust Fans

NYD, NYB specifications

Greenheck Fan has long been known as a leader in the HVAC industry, with a commitment to providing innovative solutions for various ventilation needs. Among their impressive lineup, the NYB and NYD series stand out, showcasing advanced engineering, energy efficiency, and robust performance.

The Greenheck NYB and NYD fans are designed specifically for commercial and industrial applications, focusing on building ventilation demands. The NYB series features belt-driven centrifugal fans, while the NYD series brings direct-drive technology to the table. This versatility allows these fans to accommodate a wide range of air handling applications, from exhaust to supply air scenarios.

One of the main features of the NYB series is its ability to handle high volumes of air at modest static pressures. This performance characteristic is ideal for environments such as warehouses, factories, and large commercial spaces where air turnover is crucial. The NYD series, on the other hand, excels in applications requiring quieter operation and reduced maintenance, thanks to its direct-drive design, which eliminates the need for belts and pulleys.

Both the NYB and NYD fans come equipped with several advanced technologies designed to enhance their efficiency and reliability. For instance, they often incorporate energy-efficient motors that comply with or exceed regulations set by agencies like the Department of Energy (DOE). This focus on energy efficiency not only reduces operational costs but also supports sustainability in building operations.

Durability is a key characteristic of both series, with robust construction materials that ensure longevity even in demanding environments. The fans typically feature heavy-gauge steel housings and high-quality coatings that resist corrosion, thereby extending their service life.

Moreover, these fans can be customized with various accessories, including adjustable dampers, filters, and sound attenuators, enabling them to meet specific application requirements. The easy installation and maintenance features add to their appeal, allowing for seamless integration into existing systems.

In summary, the Greenheck Fan NYB and NYD series represent cutting-edge options for any commercial or industrial ventilation system. Their combination of energy efficiency, advanced technologies, durability, and customization makes them a go-to choice for professionals seeking reliable and effective air management solutions.

Greenheck Fan manual Model NYD & NYB, General Safety Information

Models: NYD NYB