Continental AXC Fan Brochure

HOW DO I DETERMINE HOW MANY FANS I NEED?

Air circulation should occur once or twice per hour to maintain a healthy building environment.

Select the fan cfm based on the following ceiling height recommendations:

15 ft - 20 ft use 420 cfm fan or model DSF250

20 ft - 25 ft use 1055 cfm fan or model DSF300

25 ft - up use 1460 cfm fan or model DSF350

To determine the number of DSF fans for a given area, the following information is required:

• (L x W x H) = Size of room

• Size of room / cfm / 60 = Number of units

Example: a building is 125 ft. long, 75 ft. wide, and 20 ft. high.

• 125 x 75 x 20 = 187,500 cu. ft.

• 187,500 cu. ft. / 1055 cfm (DSF300 Fan) / 60 = 3 DSF Fans (round to the nearest whole number)

DESTRATIFICATION FANS

81 F

76 F

64 F

Floor

Ceiling

Air Resistance

Hot vrs. Cold

Heating challenges

Cooling challenges

Conditioned air utilizing DSF fans

CHALLENGES OF HEATING & COOLING

During the heating season, warm, heated air naturally rises to the ceiling posing a challenge for any building with high ceilings.

For example, if a ceiling is 20 feet high, there can be a 10 to 20 degree variance in temperature from the floor to the ceiling. On

average, a buildings’ temperature increases between .5 and 1 degree F for each elevated foot as heat rises to the ceiling.

During the cooling season, cold air-conditioned air is often exiting through diffusers located at ceiling level. This air is met with

resistance by the hot air rising from the floor level, forcing air-conditioning units to work harder, ultimately wasting energy trying

to keep up with the cooling demand.

SOLUTION

Installing destratification fans near the ceiling registers helps push that heated or cooled air down to the floor level, ultimately

creating a more comfortable environment inside the building. The overall effect is energy savings along with maximized efficiency

of the HVAC system.