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CONTROLS
DFC DIGITAL FAN CONTROL
Indoor Air Quality (IAQ)
Indoor Air Quality (IAQ) has become an important part of our everyday lives. IAQ affects us in the workplace, schools and more significantly,
in our homes. The American Society of Heating, Refrigeration and Air-Conditioning Engineers publishes ASHRAE 62.2, a standard that defines
the minimum ventilation requirement and acceptable indoor air quality in low-rise residential buildings.
The DFC Digital Fan Control uses smart technology to address the requirements of ASHRAE 62.2, and it is capable of automatically calculating
the airflow required to achieve acceptable indoor air quality. It is designed to provide increased ventilation control that is efficient and affordable.
Its unique architecture offers a choice of five distinct modes of operation, allowing the control to be programmed to suit a user’s preference
and lifestyle. When combined with an AXC In-Line Duct Fan, the DFC Digital Fan Control provides an excellent way of meeting IAQ standards.
1. Ventilation Mode
The Ventilation Mode is designed to achieve ASHRAE
62.2 acceptable indoor air quality. In this mode, the fan
control operates on a 60 minute cycle, automatically
determining the percentage of run time based on floor
space, number of rooms and fan capacity. For example,
if the fan is On for 15 minutes, it will be Off for 45 minutes.
2. Customized Cycle Mode
The Customized Cycle Mode allows the user to set the
On and Off periods for the fan. Once selected, the control
will cycle the fan automatically based on the user’s
preference.
3. Daily On/Off Mode
The Daily On/Off Mode allows the user to program the
fan to turn On and Off once a day, at user defined
times.
4. Manual Mode
In the Manual Mode, the control operates the fan like
a regular on/off switch. Simply pressing the main
button turns the fan On or Off.
5. Countdown Mode
The Countdown Mode allows the fan to operate for
any period between 10 and 60 minutes. At the end of
the countdown period, fan operation will return to
its prior programmed mode.
Table 4.1A, ASHRAE 62.2-2007
Floor Area
(ft
2
)
Bedrooms
0-1 2-3 4-5 6-7 >7
< 1,500 30 45 60 75 90
1,501 - 3,000 45 60 75 90 105
3,001 - 4,500 60 75 90 105 120
4,501 - 6,000 75 90 105 120 135
6,001 - 7,500 90 105 120 135 150
> 7,500 105 120 135 150 165
VENTILATION AIR REQUIREMENTS CFM
Design Features
• Easy to install
• Simple to program
• Convenient display with backlight
• User friendly icons
• Easy to read digital clock
• Automatic Daylight Savings Time function
• ASHRAE 62.2 ventilation standard
• Promotes proper Indoor Air Quality (IAQ)
• Ideal for home & bathroom ventilation
• Available in white or ivory
• Designed for single-speed fan operation
• Five year warranty
Modes of Operation
The DFC Digital Fan Control allows the user to choose from five modes of operation: