Cooling Fans
Ambient Temperature: 14˚F to 140˚F (10˚C to 60˚C)
Operating Voltage Range: 15%
MDE Series
Long-Life Models
Materials
Frame: Die Cast Aluminum
Blades: Resin
Flammability Grade: V-0
Overheat Protection: Built-in Overheat Protection Circuit
Bearings: Ball Bearings
4.69 in.1.00 in. thick
( 119 mm25.4 mm thick)
100,000 hour life expectancy lowers maintenance costs and
reduces downtime. More than 90% of fans satisfy the
following criteria when operating at an ambient temperature
of 140°F (60°C) :
● Rotation Speed (at rated voltage) Less than 30% below
rated speed
● Input Current (at rated speed) Less than 30% above rated
current
Using these fans at a temperature of 95°F (35°C) or more
and relative humidity of 25% or more may reduce their life
expectancy.
RrDC
Specifications
Speed Type
Stall Alarm,
Standard
Speed
r/min
CFM
m3/min
inH2O
Pa
Noise Level
dB(A)
MDE1225-12L
12
0.58
3000
95.3
2.7
0.281
70
46
MDE1225-24L
24
0.30
3000
95.3
2.7
0.281
70
46
●How to read the specifications➝Page E-13
●Alarm Specifications: q➝Page E-14
0.30
70
3000
60
2500
50
0.20
2000
40
0.15
1500
30
20
500
10
0
0
Measured at a distance of 3.3 feet (1 m) from the fan intake side
50
3500
1000
Frequency — Audible Noise Level (dB)
Speed
0.25
Noise Level [dB]
80
●Details of safety standards➝Page G-2
60
Static Pressure
[inH2O]
Static Pressure
[Pa]
Speed
[r/min]
Air Flow — Static Pressure Characteristics
40
30
20
10
0
Static
Pressure
0.10
31.5 63
125 250 500 1 k
1/3 Octave Band
2k
4k
8 k 16 k
Center Frequency [Hz]
0.05
0
20
0
E-44
Max. Static Pressure
Current
A
Electronic Alarm Type
Speed
4000
Max. Air Flow
Voltage
VDC
Model
0.5
40
1.0
60
1.5
80 100 120
Air Flow [CFM]
2.0 2.5 3.0
Air Flow [m3/min]
System Configuration E-19
Accessories E-101
Cooling Fans
Dimensions
Scale 1/4, Unit = inch (mm)
Weight: 0.66 lb. (0.3 kg)
d E020
1.00
4.1260.012
(104.80.3)
0.157 (25.4) 0.157
(4)
(4)
AIR FLOW
ROTATION
Introduction
4.1260.012
(104.80.3)
4.69 (119)
Rotation
MRS
Air Flow
0
0. 169 (4.3)
8 Holes
)
( 10 00)
(3
12
MU
5
4.126 (104.8)
4.57 (116)
.3
4
.5
1
7(
16
)
MBD
0.177 (4.5) 4 Holes
Accessories (Sold Separately)
Item
12 VDC or 24 VDC
GND
Alarm Output
Model
Safety Standards
Page
FG12D
✽
E-102
Filter
FL12
/
E-106
Screen
FS12
/
E-107
Finger Guard
✽ These products have been designed to pass tests set forth under the
UL and CSA standards for equipment used in fans. They conform to
the standards only when used with an O.
Thermostats Accessories
Red
Black
Orange
MFD
Connection Diagram
MF
Intake side
Outlet side
Centrifugal Blowers
Cross Flow Fans
AC Input DC Input AC Input DC Input
)
36
1
5(
0.177 (4.5) 4 Holes
4.126 (104.8)
MB
4.126 (104.8)
4.126 (104.8)
Unit = inch (mm)
DC Input
4.57 (116)
Long Life
MDE
MDS MD
Panel Cut-Out
Axial Flow Fans
AC Input
9
.3
Variable
Flow
UL Style 1007 AWG 24
Leads (Red, Black)
Alarm Lead (Orange)
(Alarm Type Only)
Before Using
a Fan
Finger Guard
● A filter or screen can be installed in place of the finger guard.
E-45