DFC DISPLACEMENT FLOW CEILING DIFFUSER

Transcription

1 DFC DISPLACEMENT FLOW CEILING DIFFUSER

2 The DFC displacement diffuser is a ceiling mounted diffuser that supplies low velocity discharge air into the occupied zone. The cool supply air cascades down from the ceiling to the occupied zone where it is then pulled by the heat sources in the lower portion of the room. The air then rises providing clean, conditioned air before passing above the occupied zone taking heat and contaminants to the high return grille. The DFC is designed with an integrated equalization baffle that ensures an even discharge of air with minimal turbulence across the perforated face of the diffuser. DFC diffuser

3 SUPERIOR THERMAL COMFORT AND AIR QUALITY + + The low velocity displacement air pattern minimizes potential draft risk. + + Warmer supply air temperatures promotes better thermal comfort for occupants. + + Stratification of temperature and contaminants promotes better air quality in the occupied zone. REDUCED ENERGY USE + + Lower static pressure as a result of the low air velocities through the diffuser can help reduce fan power consumption. + + Warmer supply air allows for increased economizer usage and free cooling. ARCHITECTURAL INTEGRATION + + Designed to layin installation in suspended Tbar ceiling. + + The DFC can be supplied in various colors and larger sizes. + + Special mounting options and inlet location options available.. TYPICAL APPLICATIONS Displacement ventilation is ideal for high ceiling or high occupancy spaces. The DFC is ideal for spaces with minimal floor or wall space, transient areas of spaces (hallways and corridors) or along the perimeter. The low noise levels, superior air quality and overhead mounting make the DFC ideal for classrooms, offices and hallways. FEATURES + + Suspended ceiling installation + + Ships with protective film on face and inlet + + Fieldcut inlet option CONSTRUCTION & FINISH + + Equalization baffle Aluminum + + Frame and perforated face panel Steel

4 Diffuser DFC air pattern

5 DIMENSIONAL DATA 1 Nom. Dia N Standard Suspended TBar Ceiling DFC Available Sizes (in.) W x H Inlet 12 x 24 6, 8 24 x 24 8, 10, x 48 6, 8 24 x 48 8, 10, x 72 8, 10, 12, 14

6 PERFORMANCE DATA Unit Size W x H [in] Inlet Size [in] 12 x x x Proximity to Outlet [ft] Face Total Static Noise Air Flow T = 5 F T = 10 F Velocity Pressure Pressure Criteria [cfm] DR DR [fpm] [in. w.g.] [in. w.g.] [NC] 15% 20% 15% 20% Performance Notes: 1. Sound and pressure drop tested in accordance with ASHRAE Standard Method of Testing for Rating the Performance of Air Outlets and Inlets. 2. Air flow is in cubic feet per minute, cfm. 3. Pressure is in inches of water, in. w.g. 4. The NC values, sound pressure level, are based on a room absorption of 10 db, re watts and one diffuser. 5. T is the difference between the room air temperature 3 ½ ft above the floor and the temperature of the supply air. 6. Proximity to outlet is the minimum distance from an outlet to the occupant in order to achieve the listed DR value. 7. Distances closer to the diffuser have a higher DR than the cataloged value. 8. DR is the predicted percentage of people dissatisfied (PPD) due to draft. A value of less than 20 meets the requirements of ASHRAE Standard , Thermal Environmental Conditions for Human Occupancy. 9. Blanks indicate that the DR is below the specified value at all distances from the diffuser face. 10. DR catalog data is presented for an occupant density of 25 people/1000ft2, which is the default occupancy density for classrooms (ages 58) given by ASHRAE For other occupant densities, please refer to the DV Room Designer Software.

7 Product Improvement is a continuing endeavour at Price. Therefore, specifications are subject to change without notice. Consult your Price Sales Representative for current specifications or more detailed information. Not all products may be available in all geographic areas. All goods described in this document are warranted as described in the Limited Warranty shown at priceindustries.com. The complete Price product catalog can be viewed online at priceindustries.com. Price is a registered trademark of Price Industries Limited Printed in Canada.