6. Round Duct Connections

Round duct connections shall be attached with #8 sheet metal screws as follows:

Ducts 22 in. (559mm) dia. and smaller shall have three screws.

Ducts larger than 22 in. (559mm) dia. and up to including 24 in. dia. shall have five screws.

NOTE: All breakaway connections described may have duct sealant, PA2084T Duct Sealant Adhesive manufactured by Precision or DP1010 Water Base Duct Sealant manufactured by Design Polymetrics, applied in accordance with SMACNA recommendations.

JO

JOPD

.BYJNVN

JOPD

JOPD

$FJMJOH3VOOFS

.BYJNVN

.BYJNVN

 

NFUBMTUVET

NFUBMTUVET

 

 

 

JO 

 

1BOIFBE

 

 

4DSFXT

JO 

 

 

JOPD

JOPD

 

.BYJNVN

.BYJNVN

 

XPPETUVET

XPPETUVET

 

DFDR-XXX Blade Orientation

Fig. 4

'MPPS3VOOFS

 

Axle

 

30°

 

 

 

Axle

 

 

30°

Axle

 

 

30° Off Horizontal

30° Off Horizontal

Normal

(Maximum)

(Maximum)

 

Damper Maintenance

Dampers do not typically require maintenance as long as they are kept dry and clean. If cleaning is necessary, use mild detergents or solvents. If lubrication is desired for components such as axle bearings, do not use oil-based lubricants or any other lubricants that attract contaminants such as dust.

Dampers must be maintained, cycled, and tested at intervals not less than every six months and in accordance with the latest editions of NFPA 90A & 92A, UL864 and local codes.

Damper Troubleshooting

The following is a possible cause and correction list for common concerns with the dampers.

Symptom

Possible Cause

Corrective Action

 

 

 

 

Frame is out of round causing blades to

Adjust frame such that it is round

Damper does not fully open and/or fully

interfere with frame

 

 

 

Screws interfere with blade

Locate screws and remove

close

 

 

Contaminants on damper

Clean with a non-oil based solvent (see

 

 

 

Damper Maintenance)

 

 

 

Link separated

Heat

Replace link

 

 

 

 

Copyright © 2006 Greenheck Fan Corporation

4

462721 DFDR-XXX FS Rev. 4 December 2006

 

Page 4
Image 4
Greenheck Fan SSDFDR-XXX, SSFDR-XXX warranty DFDR-XXX Blade Orientation, Damper Maintenance, Damper Troubleshooting, Axle

DFDR-XXX, FDR-XXX, SSFDR-XXX, SSDFDR-XXX specifications

Greenheck Fan SSDFDR-XXX, SSFDR-XXX, FDR-XXX, and DFDR-XXX are an advanced series of fans designed for a wide range of commercial and industrial applications. These fans are specifically engineered to ensure optimal performance in ventilation and air management systems.

One of the main features of the Greenheck SSDFDR and its variants is their exceptional energy efficiency. These fans are equipped with high-efficiency motors that significantly reduce energy consumption while maintaining powerful airflow. This efficiency not only leads to cost savings on energy bills but also supports sustainability efforts, making these fans an environmentally responsible choice.

The SSDFDR series is notable for its innovative design. These fans come with advanced aerodynamics that minimize noise levels while delivering high static pressures. This design makes them particularly suitable for applications where noise control is paramount, such as in hospital environments, schools, and commercial buildings. Their quiet operation does not compromise their performance, ensuring a comfortable environment for occupants.

Another compelling characteristic of the SSFDR-XXX, FDR-XXX, and DFDR-XXX models is their robust construction. Built from high-quality materials, these fans are designed to withstand demanding conditions. Whether exposed to harsh weather elements or corrosive environments, the durable construction ensures longevity and reliable performance over time.

The flexibility in design configurations is an additional advantage of the Greenheck fan series. With various models available, users can select the appropriate fan to suit their specific requirements, whether that involves airflow volume, static pressure, or motor type. This customization is essential for ensuring that ventilation systems operate efficiently in various applications, from large commercial spaces to high-tech industrial facilities.

Moreover, the user-friendly features of the SSDFDR-XXX and its variants simplify installation and maintenance processes. With options for direct drive or belt-driven models, users can easily find the right fan configuration for their system. Quick access panels enhance serviceability, allowing for efficient maintenance without extensive downtime.

In summary, the Greenheck Fan SSDFDR-XXX, SSFDR-XXX, FDR-XXX, and DFDR-XXX series provide a comprehensive solution for ventilation needs. With their energy-efficient designs, low noise operation, durable construction, customization options, and ease of maintenance, these fans are engineered to meet the complex demands of modern commercial and industrial environments. Choosing Greenheck means investing in reliable and advanced ventilation technology that promotes healthy indoor air quality and operational efficiency.