Indoor Fan Performance - Sanyo Big PACi 18 Series Technical Data & Service Manual

1

1-9. Indoor Fan Performance

Booster Cable for Concealed-Duct Type
If external static pressure is too great (due to long
extension of ducts, for example), the airflow 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 as shown in Fig. 1-1.
(5) Place the cable neatly in the box and reinstall the
cover plate.
How to Read the Diagram
The vertical axis is the external static pressure (Pa)
while the horizontal axis represents the airflow
(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"
airflow. For the 25 type, the airflow is 18 m
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
airflow volume may drop too low at each air outlet.
SPW-UR254GH56 (A/B)
SPW-UR254SH56B
SPW-U255H
SPW-U255SHT
150
100
50
L
0
10
Airflow (m
NOTE
HT : Using the booster cable
H : At shipment
3 /minute,
15
150
10
100
HT
H
5
50
M
0
0
20
3
/minute)
Fan
motor
Fan motor socket
SPW-UR364GH56 (A/B)
SPW-UR364SH56B
SPW-U365H
SPW-U365SHT
15
HT
10
H
5
M
L
0
20 30
3
Airflow (m /minute)
Fig. 1-2
1-102
Electrical component box
Booster cable
(At shipment) (Booster cable installed)
Fig. 1-1
Indoor Fan Performance
SPW-UR184GH56 (A/B)
SPW-UR184SH56B
SPW-U185H
SPW-U185SHT
150
100
50
HT
H
M
L
0
10
3
Airflow (m /minute)
SPW-UR484GH56 (A/B)
SPW-UR484SH56B
SPW-U485H
SPW-U485SHT
150
100
50
L
0
20
Airflow (m
Booster cable
15
10
5
0
15
15
10
HT
H
5
M
0
30 40
3
/minute)