Daikin VAM Series Engineering Data page 6

Product Introduction
A i r f l o w C o n t r o l
Class 1 Ventilation
Both supply air and exhaust
air are controlled by mechanical
ventilation in order to achieve
stable ventilation when required.
For common ventilation usage,
Class 1 ventilation is able to meet
the requirement.
"For example:
Heat Reclaim Ventilator"
EA
F r e s h u p O p e r a t i o n
By changing the airflow balance, positive pressure
or negative pressure in a room can be achieved
in order to prevent pollutants from entering or
flowing out.
Supply fresh up operation increases the
supply air volume to prevent pollutants
from entering into the room.
For example, it keeps outdoor pollen and dust from
entering when doors are opened or closed, or
through gaps in windows.
Example: Convenience Stores
By positive pressure in the room, the entering of dirty
outside air, odors and moisture when opening and closing
of doorway is prevented.
EA
4
System that uses mechanical
ventilation for supply air and
natural ventilation for exhaust air.
Class 2 ventilation is often used for
specific purpose such as positively
pressured room (Hospital Clean Room,
Mechanical Ventilation (Supply)" Mechanical Ventilation (Supply)"
SA
SA
Positive
pressure(+)
Doorway
Class 2 Ventilation
System that uses natural ventilation
Class 3 ventilation often being used
Factory Clean Room).
"For example: For example:
Positive
pressure(+)
Dust
Exhaust fresh up operation will increase
exhaust air volume to prevent pollutants
from flowing to other area.
For example, to prevent dirty air generated indoors
from flowing out in through windows and doors, the
indoor air is kept under negative pressure and
discharged.
Example: Conference Room
By negative pressure in the room, contaminated
air and moisture from the room is prevented from
leaking into other areas.
EA
Dust
hallway
Class 3 Ventilation
for supply air and mechanical
ventilation for exhaust air.
at area with high odor generation
such as kitchen and toilet.
"For example:
Mechanical Ventilation (Exhaust)"
k i t c h e n
Negative
pressure(-)
SA
Negative
pressure(-)
VAM-HVE/HVLT Series
EDMMT712101