1-4 Indoor Fan Performance
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 the screw on the electrical component box
and remove the cover plate.
(2) Disconnect the fan motor sockets in the box.
(3) Replace the adapter cable with the booster cable
(sockets at both ends).
(4) Securely connect the booster cable sockets
between the disconnected fan motor sockets in step 2
as shown in the Figure.
(5) Place the cable neatly in the box and reinstall the cover plate.
NOTE
HH: Using the booster cable
H: At shipment
How to read the diagram
The vertical axis is the external static pressure (mm W.G.) while the horizontal axis represents the AIR FLOW
(m
3
/h).
The characteristic curves for “HH”, “H”, “M” and “L” fan speed control are shown.
The nameplate values are shown based on the “H” air flow rate.
The flow rate is 600 m
3
/h while the external static pressure is 5 mm W.G. at H position.
Fan motor
Booster cable
(M - H - HH)
Connector motor cable (at the supply)
Adapter cable
(L - M - H)
0
2
4
6
8
10
200
400
600
800
1000
H
HH
M
L
m
3
/h
EXTERNAL
ST
A
TIC PRESSURE (mmW
.G.)
9
Содержание 387106972
Страница 10: ...2 DIMENSIONAL DATA Units mm 10...
Страница 11: ...3 ELECTRICAL DATA 3 1 Electric Wiring Diagrams 11...
Страница 15: ...4 3 Drain Pump and Float Switch...
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