Mitsubishi Electric Lossnay LGH-F1200RX5-E, Technical Manual

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U-86
CHAPTER 10
•
Ventilation Standards in Each Country
1. Ventilation Standards in Each Country
1.1 Japan
Summary of Laws Related to Ventilation
Item
Related Laws
Acceptable Range Room Environment Standard Values Remarks
Law for
Maintenance of
Sanitation in
Buildings
Buildings of at least
3,000 m
2
(for schools, at
least 8,000 m 2 ).
If a central air quality management system or mechanical
ventilation equipment is installed, comply with the standard
target values shown in the table below.
Impurity Volume of
Particles
Less than 0.15 mg per 1 m 3
of air
CO Rate
Less than 10 ppm. (Less than 20
ppm when outside supply air has
a CO rate of more than 10 ppm.)
CO
2
Rate Less than 1,000 ppm.
Temperature
1) Between 17°C and 28°C
2) When making the room
temperature cooler than the
outside temperature, do not
make the difference too great.
Relative Humidity 40% - 70%
Ventilation
Less than 0.5 m/sec.
Applicable buildings are
those designed to serve a
specific purpose.
The Building
Standard Law of
Japan
Buildings with
requirements for
ventilation equipment.
1) Windowless rooms.
2) Rooms in theaters,
movie theaters,
assembly halls, etc.
3) Kitchens, bathrooms,
etc.
Rooms with equipment
or devices using fire.
Central air quality management system ventilation
capacity and characteristics
Effective ventilation capacity V 20Af/N(m
3
)
Af: Floor space (m 2 ); N: Floor space occupied by one person
Impurity Volume of
Particles
Less than 0.15 mg per 1 m 3
of air
CO Rate Less than 10 ppm.
CO
2
Rate Less than 1,000 ppm.
Temperature
1) Between 17°C and 28°C
2) When making the room
temperature cooler than the
outside temperature, do not
make the difference too great.
Relative Humidity 40% - 70%
Ventilation Less than 0.5 m/sec.
Applicable buildings are
those with ventilation
equipment requirements.
Industrial Safety and
Health Act
Offices.
(Office sanitation
regulated standards)
For general ventilation, the effective ventilation area
opening is at least 1/20 of the floor space, and the
ventilation equipment installed gives a CO density of 50
ppm and CO
2
density of 5,000 ppm or less. If a central
air quality management system or mechanical ventilation
equipment is installed, comply with the standard target
values shown in the table below.
Impurity Volume of
Particles
Air (1 atmospheric pressure, 25°C)
less than 0.15 mg per 1 m
3 of air
CO Rate
Less than 10 ppm. (Less than 20 ppm
when outside supply air has a CO
rate of more than 10 ppm.)
CO
2
Rate Less than 1,000 ppm.
Air Flow
Air flow in room is less than
0.5 m/s, and air taken into the room
does not blow directly on or reach
occupants.
Heat and Humidity
Conditions
Heat between 17°C - 28°C
Relative humidity 40% - 70%