Ventilation Method - Mitsubishi Electric Lossnay series Technical Manual

3. Ventilation Method

3.1 Comparing of Ventilation Methods
There are two main types of ventilation methods.
Centralized Ventilation Method
Mainly used in large buildings, with the ventilation air intake being installed in one machine room. For this method, primary
treatment of the ventilation air, such as energy recovery to the intake air and dust removal, is performed via distribution to the
building by ducts.
Independent Zoned Ventilation Method
Mainly used in small to medium sized buildings, with areas being ventilated using ventilation air intake via independent
ventilation devices. The use of this method has recently increased as independent control is becoming more feasible.
Centralized Ventilation Method
Air intake
(ventilation
air)
Filters
Lossnay
Each unit
Independent Zoned Ventilation Method
1) System operation with cassette-type indoor units of air conditioner
Exhaust
Air exhaust
(stale air)
Supply fan
2) System operation with ceiling embedded-type indoor units of air conditioner
Ceiling embedded-type indoor units
of air conditioner or fan coil unit
3) Independent operation with ceiling suspended-type indoor units of air conditioner
Cassette-type or ceiling
suspended-type indoor units of
air conditioner or fan coil unit
•
CHAPTER 1
Cassette-type indoor units of
air conditioner or fan coil unit Exhaust grill
Supply grill
Ventilation for Healthy Living
Ceiling recessed-
type Lossnay
Exhaust air
Ventilation air
Finished ceiling
Ceiling recessed-
Exhaust grill type Lossnay
Exhaust air
Ventilation air
Finished ceiling
Ceiling recessed-
type Lossnay
Exhaust grill
Exhaust air
Ventilation air
Finished ceiling
U-5