Increasing The Fan Speed - Panasonic S-22MU1E5 Installation Instructions Manual

3-16. Increasing the Fan Speed

If external static pressure is too great (due to long extension
of ducts, for example), the air flow volume may drop too low at
each air outlet. This problem may be solved by increasing the
fan speed using the following procedure:
(1) Remove 4 screws on the electrical component box and
remove the cover plate.
(2) Disconnect the fan motor sockets in the box.
(3) Take out the booster cable (sockets at both ends) clamped
in the box.
(4) Securely connect the booster cable sockets between the
disconnected fan motor sockets in step 2 (Fig. 3-52).
Electrical component box
Booster cable
Fan
motor
Fan motor socket
(At shipment)
(5) Place the cable neatly in the box and reinstall the cover
plate.
Indoor Fan Performance
150
100
■ How to read the diagram
The vertical axis is the external static pressure (Pa) while the horizontal axis represents the air flow (m
curves for "HT", "H", "M" and "L" fan speed control are shown. The nameplate values are shown based on the "H" air flow. For the
73 type, the air flow is 18 m
(due to long extension of ducts, for example), the air flow volume may drop too low at each air outlet. This problem may be solved by
increasing the fan speed as explained above.
Booster cable
(Booster cable installed)
73, 90 Type
15
10
HT
H
5
50
M
L
0 0
10 20
Air Flow (m³/minute)
HT: Using the booster cable
NOTE
H: At shipment
3
/minute, while the external static pressure is 49 Pa at "H" position. If external static pressure is too great
22, 28, 36 Type
150
100
Fig. 3-52
50
0
5
Air Flow (m³/minute)
106 Type
150
100
50
M
L
0
20 30
Air Flow (m³/minute)
21
15 150
10
100
HT
5
50
H
M
L
0 0
10
Air Flow (m³/minute)
140, 160 Type
15
150
HT
10
100
H
5
50
0
0
20
Air Flow (m³/minute)
3
/minute). The characteristic
45, 56 Type
15
10
5
HT
H
M
L
0
10 15
15
10
HT
H
5
M
L
0
30 40
Fig. 3-53