Mitsubishi Electric Lossnay series Technical Manual page 70

(2) Ventilation
•
For general offices, a ceiling embedded-type Lossnay unit would be installed. The inside of the ceiling would be used as a
return chamber for exhaust, and the air from the Lossnay unit would be supplied to the air-conditioning return duct and
mixed with the air in the air conditioning passage. (Exhaust air was taken in from the entire area, and supply air was
introduced into the indoor units of air conditioner to increase the effectiveness of the ventilation for large rooms.)
•
For board rooms, conference rooms, and salons, a ceiling embedded-type Lossnay unit would be installed. The stale air
would be exhausted from the discharge grille installed in the center of the ceiling. The supply air would be discharged
into the ceiling, where, after mixing with the return air from the air conditioner, it was supplied to the air conditioner.
•
The air in the toilet, kitchenette, and elevator hall, etc., would be exhausted with a straight centrifugal fan. The OA
supply would use the air supplied from the Lossnay unit. (The OA volume would be obtained by setting the Lossnay
supply fan in the general office to the extra-high mode.)
Installation of air conditioning system for board rooms, conference rooms,
salons - the air supplied from the Lossnay unit was blown into the ceiling, and
the stale air was removed from the discharge grille.
Inspection
space
SA (Supply air)
Lossnay
Suspension bolt
position
Discharge grille
SA (Supply air) Suspension bolt
Lossnay
Discharge grille
RA (Return air)
•
CHAPTER 6 Examples of Lossnay Applications
Suspension bolt
position
OA
Inspection hole
(Outdoor air suction)
EA
(Exhaust air)
OA
(Outdoor
air suction)
EA
(Exhaust air)
U-61