Mitsubishi Heavy Industries FDTC40ZIXVD Data Book page 132

1.5 CHARACTERISTICS FAN
(1) Duct connected-Low/Middle static pressure type (FDUM)
• External static pressure table
Duct specs.
Air flow
3
(m /min)
Model
FDUM50VD
14
18
FDUM60VD
20
FDUM71VD
28
FDUM100VD
FDUM125VD
34
FDUM140VD
Notes(1) 1 spot closing: Round duct flange at center is removed and shield with a
special panel (option).
Notes(2) Standard: ø200 duct are installed at all blowout holes.
Notes(3) Square duct: All round ducts are removed and replaced with special
square duct flanges (option)
Model FDUM50VD
120
100
80
60
40
20
0
-10
10
Lower
limit
Unit : Pa (50Hz/60Hz)
(1)
1 spot closing Standard
- 85/90
70/85 85/100
65/80 85/100
80/90 90/100
75/90 85/100
50Hz
[Standard]
2-spot blower internal resistance
Square duct blower intermalresistance.
12 14
Air flow (m /min)
3
Example : Case of FDUM60VD (50Hz)
(2) (3)
Square duct
90/90
90/100
90/105
95/105
95/105
120
100
80
60
40
20
0
-10
15.5 10
Upper Lower
limit limit
- -
131
'10 • PAC-DB-142
How to interpret the blower characteristics table
40
20
2-spot blower
internal resistance
0
–10 3-spot blower
internal resistance
Square duct blower
–20
internal resistance
13 14 16
Air flow (m
3
① 2-spot blowout.....................
Internal resistance increases more than
the standard 3-spot blowout.Approx.
14Pa at 17m 3 /min
② Square duct blowout...........
Internal resistance decreases more than
the standard round duct (ø200 3-spot).
3Pa at 17m 3 /min. (External static
pressure increases in reverse.)
[Standard]
2-spot blower internal resistance
Square duct blower intermalresistance.
12 14
Air flow (m /min)
3
18 20
/min)
60Hz
15.5
Upper
limit