4
4
- 12
3
3-WAY FLOW LOGIC Unit Specifications
7. Concealed Duct Hi
g
h Static Pressure Type
NOTE
HT : Using the booster cable (96 type only)
H : At shipment
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
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
(mmAq)
(Pa)
H
HT
M, H, HT
M
L
96 Type
Booster cable
Booster cable
Electrical component box
(At shipment)
(Connected booster cable)
Fan motor socket
Fan
motor
Fig. 8-1
04-218 Airwell-4_6-7.qxp 01/06/2007 13:24 Page 123