LOUVERED FACE GRILLES AND REGISTERS
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1 Performance Notes for Supply rilles and Registers, 6 and 67 Series Throw, Spread and Drop The isovel diagrams shown below, illustrate in plan view, the relationship of horizontal spread to throw for three standard vertical blade deflections and represent a typical high side wall supply outlet. The isovels (throw values) are for the cataloged terminal velocities of 1, and fpm. Cataloged data, in accordance with the test code, is with the grille mounted 9" (9) below the ceiling and benefiting from the ceiling coanda effect under isothermal conditions. Throw values without ceiling effect (greater than 24" (6) from a surface parallel to the airflow) may be approximated by multiplying the cataloged throw by x.7. In order to offset potential draft problems caused by premature drop, it is recommended to set the blades with an upward deflection setting of 1 in free space conditions. The Spread Characteristics With Three Deflection Settings Spread (ft.) Spread (ft.) Spread (ft.) /2 Deflection Deflection 4 Deflection Vt = 1 fpm Vt = fpm Vt = 1 fpm Vt = fpm Vt = 1 fpm Vt = fpm Vt = fpm Vt = fpm Vt = fpm angle of spread and temperature differential between the supply air and room air ( T) also effects the drop of the airstream. Under constant conditions of temperature, volume and core velocity, the wider the spread, the smaller the drop. Typical cold supply air ( F T) reduces horizontal throw by approximately %. Warm air will increase throw by approximately % and reduce drop. For a full explanation of the effects of spread, throw, temperature and drop, refer to the engineering guide at the back of the catalog. Corrections for Blade Deflection (add) Model Blade Deflection Damper Type 1/2 4 Double With Deflection Without Single With Deflection Without Note: Damper corrections are for wide open damper. TP Correction Factors for rilles Without Damper (multiply) Blade deflection 1/2 4 Double Defl. Factor x.8 x.83 x.89 Single Defl. Factor x.73 x.76 x.8 Corrections for Throttling Damper (add) Additional Pressure Drop (in. w.g.).".1".2" Approx. Damper Opening 7% 67% % add
2 Supply rilles and Registers, 6 and 67 Series Models: 1DV, 1DH, 1SV, 1SH, 61DV, 61DH, 61SV, 61SH, Listed Alternate Core Ak Core Velocity Duct Size Area Factor VP Size (inches) (sq. ft.) (inches) TP 1/ x x x T 1/ x x x T 1/ x x x T 1/ x 8 14 x T 1/ x 6 18 x T 1/ x 6 x T 1/ x x x T 1/ x x x T 1/ x x 6 28 x x 4. T 1/ x x x T 1/ x x 6 28 x x 4.47 T 1/ x x x 8 24 x x 4.3 T 1/ x x T 1/
3 Supply rilles and Registers, 6 and 67 Series Models: 1DV, 1DH, 1SV, 1SH, 61DV, 61DH, 61SV, 61SH, Listed Alternate Core Ak Core Velocity Duct Size Area Factor VP Size (inches) (sq. ft.) (inches) TP 1/ x x x 24 x x 6.73 T -1/ x x x x 6.81 T 1/ x x T 1/ x x 16 x x 8.97 T 1/ x x x x T 1/ x 18 x x x x 1.24 T 1/ x 12 X x X 1.37 T 1/ x 16 x T 1/ x x T 1/ x 12 x x x T 1/ x 24 x x T 1/ x x x T 1/ x x 18 x x T 1/
4 Supply rilles and Registers, 6 and 67 Series Models: 1DV, 1DH, 1SV, 1SH, 61DV, 61DH, 61SV, 61SH, Listed Alternate Core Ak Core Velocity Duct Size Area Factor VP Size (inches) (sq. ft.) (inches) TP 1/ x x x x x T -1/ x x 18 4 x x T 1/ x 28 x x T 1/ x x x x T 1/ x x T 1/ x x x x 3.7 T 1/ x x T 1/ x 24 4 x x T 1/ x x x x 3.3 T 1/ x x x x 3.96 T 1/ x 4 x T 1/ x x T 1/ x x x x x T 1/
5 Supply rilles and Registers, 6 and 67 Series Models: 1DV, 1DH, 1SV, 1SH, 61DV, 61DH, 61SV, 61SH, Listed Alternate Core Ak Core Velocity Duct Size Area Factor VP Size (inches) (sq. ft.) (inches) TP 1/ x x 4 x x 4.84 T -1/ x x x x 28. T 1/ x 42 x T 1/ x 36 x x.99 T -1/ x x 4 x x 6.3 T 1/ x x 42 x x T 1/ x x T 1/ x T 1/ x T 1/ cubic feet per minute TP - total pressure - inches w.g. VP - velocity pressure - inches w.g. T - throw in feet - Noise Criteria (values) based on db room absorption, re -12 deflection. Core velocity is in feet per minute. Performance Notes: 1. Performance data is based on double deflection grille with opposed blade damper (register). 2., 1/2 and 4 represent vertical blade deflection angles and horizontal spread. 3. Throw values are given for terminal velocities of 1, and fpm under isothermal conditions. 4. Additional performance notes and correction factors for various models and settings may be found on page.. Data derived from tests conducted in accordance with ANSI/ASHRAE Standard
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