Urban Small-Scale Building - Mitsubishi Electric Lossnay LGH-100RX3-CAN Technical Manual

3. Urban Small-Scale Building

3.1 System plan points
This system is based on effectively using available space within a limited area by installing the air conditioner and ventilator in
available excess space.
For this application, the air flow must be considered for the entire floor with the ventilator installed in the ceiling space.
Setting outline
Application : Office
Building form : RC (Reinforced Concrete)
Total floor space : 552 m
Application per floor : B1: Parking area
Air conditioning : Package air conditioner
Ventilation : Ceiling embedded-type and cassette-type Lossnay, straight centrifugal fan, duct ventilation fan.
3.2 Current topics
(1) Three sides of the building are surrounded by other buildings,
and windows cannot be installed. (Dependency on
mechanical ventilation is high.)
(2) Ample fresh outdoor air cannot be supplied. (Generally, only
Class 3 ventilation (forced exhaust) is possible.)
(3) If the exhaust in the room is large, odors from the toilet, etc.,
flow into the room.
(4) Humidification during winter is not possible.
3.3 Plan details
(1) Air conditioning
Space efficiency and comfort during cooling/heating is improved with ceiling embedded cassette-type package air
conditioner.
(2) Ventilation
Room
Salon corner
Conference room
Board room
Toilet, powder room
Kitchenette
Position of air intake/exhaust air outlets on outer wall
The freshness of the outdoor air taken in by the Lossnay is important, thus considering that the building is surrounded by
other buildings, the intake and exhaust ports must be separated as far as possible.
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(B1 to 5F)
GF to 5F: Office
Entire area is ventilated by installing several ceiling embedded-type Lossnay units.
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Humidification is possible by adding a humidifier.
(Outdoor air is supplied to the toilet and kitchenette by setting the selection switch on the
Lossnay unit for supply to the extra-high notch.)
Area is independently ventilated by installing a ceiling embedded-type or cassette-type Lossnay
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in each room.
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Area is exhausted with straight centrifugal fan or duct ventilation fan.
(An adequate exhaust volume can be obtained by taking in outdoor air, with the toilet being
ventilated constantly.)
CHAPTER 6 Examples of Lossnay Applications
GF layout 1F to 5F layout
PAC : Package air conditioner
LS : Lossnay
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