Panasonic S-22MM1E5 - Increasing the Fan Speed

21
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
Fan
motor
Booster cable
(At shipment) (Booster cable installed)
Fan motor socket
Booster cable
Fig. 3-52
(5) Place the cable neatly in the box and reinstall the cover
plate.
Fig. 3-53
■
How to read the diagram
The vertical axis is the external static pressure (Pa) while the horizontal axis represents the air flow (m
3
/minute). The characteristic
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
3
/minute, while the external static pressure is 49 Pa at “H” position. 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 as explained above.
5
0
50
100
0
5
10
15150
10
HT
H
M
L
20
0
50
0
5
10
15
150
10
HT
H
L
100
M
30 40
0
50
0
5
10
15
150
20
L
100
M
H
HT
30
0
50
0
5
10
15
150
20
HT
L
100
M
H
15
0
50
0
5
10
15150
10
HT
M
L
100
H
External Static Pressure External Static Pressure
External Static Pressure
External Static Pressure
External Static Pressure
(Pa)
(Pa)
(Pa)
(Pa) (Pa)
(mmAq) (mmAq)
(mmAq) (mmAq) (mmAq)
Air Flow (m³/minute)
Air Flow (m³/minute)
Air Flow (m³/minute)
Air Flow (m³/minute) Air Flow (m³/minute)
Limit line
Limit line
Limit line
Limit line
Limit line
Limit line
Limit line
Limit line
22, 28, 36 Type
45, 56 Type
73, 90 Type
106 Type 140, 160 Type
Indoor Fan Performance
NOTE
HT: Using the booster cable
H: At shipment
Limit line
Limit line
Panaindoor336013Eng.indb21Panaindoor336013Eng.indb21 2012/03/2121:07:082012/03/2121:07:08