York HIC4008B21S Engineering Manual page 11

● Motion Sensor
(1) A decorative panel with a motion sensor can intelligently detect human activity and furniture heat
signatures.
Air conditioning comfort is improved with four motion sensors and one heat-detecting sensor equipped
with the decorative panel.
Motion Sensor

Infrared is always radiated from humans and objects.
The motion sensor uses infrared in a "detecting area" to detect human energy.
Radiation Sensor

The radiation sensor measures the temperature in its detecting area through radiated infrared from
human and objects.
Detecting Area of Motion Sensors
(Viewed from Ceiling)
The motion sensors' detecting area is divided
into four separate areas as shown above.
Model
Detecting Angle
Detecting Area
NOTE:
1. The motion sensor detects human activity. However, if someone is in a room with very little activity,
the motion sensors may not detect motion.
2. The motion sensor may detect human activity if the indoor unit with the motion sensor is installed
near a moving object which has a temperature different than the environment.
3. The motion sensors may detect no activity if the indoor unit is installed on a high ceiling of 13.1 ft. (4m)
or more, or fingerprints or contaminants are on the motion sensors' lenses, even if someone is in a
room.
TC-17005-rev.1
Detecting Area
Motion Sensor
Four motion sensors are installed
in this area.
Radiation Sensor
(H,Y,C)IC4008B21S
to
(H,Y,C)IC4024B21S
When the ceiling height is 8.9ft (2.7m).
● Detecting Diameter Approx. 23ft (7m)
(2.6ft (0.8m) from floor surface)
Example of (H,Y,C) IC4030B21S to (H,Y,C) IC4048B21S
Angle
o
Approx. 123
Dia. Approx. 28.9ft (8.8m)
2.6ft (0.8m)
(From Floor Surface)
In an instance where the ceiling height is 10.5ft (3.2m)
(H,Y,C)IC4030B21S
(H,Y,C)IC4048B21S
o
Approx. 123
When the ceiling height is 10.5ft (3.2m).
● Detecting Diameter Approx. 28.9ft (8.8m)
(2.6ft (0.8m) from floor surface)
FEATURES
Ceiling Height
10.5ft (3.2m)
to
1-3