Sanyo SPW-XR253GH56 Technical Data & Service Manual page 100

1-9 Indoor Fan Performance
Concealed Duct Type
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 2 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 as shown in the Fig. 1-1.
(5) Place the cable neatly in the box and reinstall the
cover plate.
Indoor Fan Performance
SPW-UR253GHN56
150 15
10
100
HT
H
5
50
M
L
0 0
10 20
Air Flow Volume (m 3 /minute)
1746_U_I
NOTE
HT : Using the booster cable
H : At shipment
How to read the diagram
The vertical axis is the external static pressure (Pa) while the horizontal axis represents the AIR FLOW (m
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 25 type, the air flow is 18 m
external static pressure is 49 Pa at "H" position. If external static pressure is too great (due to long extension of duct, 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.
Fan
motor
SPW-UR363GHN56
150
HT
100
H
50
M
L
0
20 30
3
Air Flow Volume (m /minute)
1747_U_I
Fig. 1-2
I - 95
1. Specifications
Electrical component box
Booster cable
Fan motor socket
(At shipment) (Connected booster cable)
Fig. 1-1
SPW-UR483GHN56
15
150
10
100
5
50
0
0
20
Air Flow Volume (m
3 /minute, while the
Booster cable
1743_M_I
15
1
10
HT
H
2
5
M
L
0
30 40
3 /minute)
3
1748_U_I
4
3 /minute). The
5
SM830080