c
d
a
a
Footing
Figure 5-8
a
a
Figure 5-5 Diagram of ceiling
b
d
Figure 5-9 Ceiling
Figure 5-6 Diagram of ceiling
d
a
a
5.3.1 Spacing and positioning
Incorrect positioning or installation may increase the
noises and vibration of the unit during operation.
If not enough space is reserved during installation, the
unit may face difficult maintenance and reduced
b
performance.
Figure 5-10 Vertical type
The unit allows vertical installation, provided that correct
positioning is arranged in advance. As shown below, a is
greater than 150 mm, b greater than 90 mm, c greater
than 50 mm and d greater than 1500 mm.
d
a
a
a
a
b
d
b
Figure 5-7
Figure 5-11 Ceiling
10