Retrotec calibrated fan: model 400 – Retrotec Commercial 441 and 451 DucTester User Manual
Page 12
Page 12 of 56
©Retrotec Inc. 2015
When depressurizing, the Flex Duct must be removed in order to change the Ranges.
CFM
minimum
CFM
maximum
Range
name
Included
45
199
74
yes
15
78
47
yes
2.7
32
29
yes
2.6
12
18
yes
1.1
4.7
11
optional
0.34
1.7
7
optional
0.077
0.42
3
optional
0.018
0.11
2
optional
0.0045
0.032
1
optional
Table 1 Minimum and Maximum flows for all Range Plugs
3.1.2.
Retrotec calibrated fan: Model 400
The Model 400 fan has 1700 Watt blower. Choose 120 or 240 Volts AC, 50 to 60 Hz is acceptable. Speed
is controlled using the knob on the 400 fan or the Retrotec digital gauge, which will control the fan to
any desired Set Speed.
The Model 400 Fan has a speed control built into the Fan with on/off switch on one Control Panel. The
powercord on the 120V AC unit is permanently mounted through the front of the fan housing while the
240 V AC power cord is detatchable and mounts on the left side. The second, right hand control panel
has a speed control knob and two CAT-5 connectors that are used to connect to any Retrotec gauge for
speed control purposes; not to be connected to the Internet. The second CAT-5 connection allows this
fan to be daisy chained to a second fan, making them receive the same % speed signal thereby making
two fans run in unison. The control signal from one gauge will run both fans. a power input connection