Retrotec DucTester 200 Series Residential Applications - Manual (Page 83)

Page 83 of 91
©Retrotec Inc. 2015
Model 210 and 220 – obsolete models no longer in production
The 210 and 220 model duct testing fans were sold with R31 and Q32 DucTester systems respectively.
At 0.25 hp, the fans were designed specifically for duct testing. Rendered obsolete by the Model 200
fan, the Model 210 and some Model 220 fans require a manual speed control. The Model 220 offers a
self-referencing port for easy testing in both directions. The main difference between the Model 210
and the 220 are the Fan Top designs for Pressure and Speed Control connectivity.
Figure 53: Obsolete Retrotec Model 210 has an audio style connection for speed
control and only a single pressure connector
Figure 54: Obsolete Retrotec Model 220 has Ethernet-style connections for speed control from the gauge.