W-ECO MULTI SYSTEM Unit Specifications
IV - 114
TD831077
4
NOTE HT : Using the booster cable (96 type only)
H : At shipment
8. Concealed Duct High Static Pressure Type
Increasing the Fan Speed (96 type only)
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 2 booster cables from option curton box
(sockets at both ends).
(4) Securely connect 2 booster cable’s sockets
between the disconnected fan motor sockets in
step 2 as shown in the Fig. 8-1.
(5) Place the cable neatly in the box and reinstall the
cover plate.
60 70
Air Flow Volume (m
3
/minute)
External Static Pressure
0
50
0
5
10
15
20
25
150
200
250
50
Limit line
Limit line
100
1744_D_I
M
(mmAq)
(Pa)
H
H
L
M
76 Type
Indoor Fan Performance
Fig. 8-2
70 80 90
Air Flow Volume (m
3
/minute)
External Static Pressure
0
50
0
5
10
15
20
25
150
200
250
60
Limit line
Limit line
100
1745_D_I
(mmAq)
(Pa)
H
HT
M, H, HT
M
L
96 Type
Booster cable
Booster cable
Electrical component box
(At shipment) (Connected booster cable)
1743_M_I
Fan motor socket
Fan
motor
Fig. 8-1