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Retrotec DM32 Operation Manual

Speed control adapter
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Operation Manual
rev-2013-12-02
Accessories & Parts
Speed
Control
Adapter
Retrotec Inc.

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Summary of Contents for Retrotec DM32

  • Page 1 Operation Manual rev-2013-12-02 Accessories & Parts Speed Control Adapter Retrotec Inc.

  • Page 2: Table Of Contents

    Pressurization testing no longer requires the use of an additional tube that is run to the other side of the cloth. DM32 takes care of this in software and always makes the correct decision. The True Flow Grid can be corrected in the gauge without using correction tables.

  • Page 3: Overview

    Fans manufactured by TEC (such as those used with the Minneapolis Duct Blaster® or Minneapolis Blower Door™ Model 3 or 4) can be controlled by the Fan Speed control output on a Retrotec gauge using the Retrotec Model FN275 - Speed Control Adapter (for TEC fans). The fan speed control must have the cruise input port which is indicated by the presence of an audio jack on the side.

  • Page 4: What's Included

    Cable, and a short black cable with 3.5 mm audio connectors. The Speed Control Cable connects to the Speed Control output on the top of the Retrotec gauge, and the black connector goes from the Adapter to the Minneapolis Fan Speed Control Cruise input port.

  • Page 5: Operation

    User must be sure to select the fan on the gauge corresponding to the fan installed in the Blower Door. With the DM32, this is a matter of a few taps on the touchscreen, as shown in Figure 3. Figure 3: User must set the type of fan on the gauge to the TEC fan in use Page 5 of 10 ©Retrotec Inc.

  • Page 6: Connect Pressure Tubing For Minneapolis Model 3

    In order to use the color-coded pressure input ports, diagrams are provided indicating how to hook up each of the TEC fans using the Retrotec color codes. Equivalent set up is shown for each model fan, and whether the fan is being used for pressurizing or depressurizing.
  • Page 7 It is important that both the yellow and green tube are used with the Retrotec gauge when the fan type is chosen as Model 4, just as the TEC gauge requires both the red and clear tubes.

  • Page 8: Connect Pressure Tubing For Minneapolis Duct Blaster

    Figure 8: View of Retrotec gauge tubing when used with Duct Blaster (no need for green in Pressurize) In both Pressurize and Depressurize set ups with a Retrotec gauge, the yellow tube goes to the brass tap on the Duct Blaster fan.
  • Page 9 Figure 11: Comparison of connections using a Retrotec gauge instead of the TEC gauge using Duct Blaster Note that in Pressurize set up, the gauge green tube is not required as the Flow Conditioner will be removed from the Duct Blaster.

  • Page 10: Adapter Technical Details

    The Speed Control Adapter is designed to work with the fan speed control output from Retrotec gauges, including the DM32 and the DM-2. Given that DM-2 are reaching end of lifecycle, it would be prudent for Speed Control Adapter users to use the DM32 to control their TEC fans.

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