Retrotec Speed Control Adapter (for TEC fans) - Manual (Page 8)

Page 8 of 10
©Retrotec Inc. 2014
3.5 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.
When using the Retrotec gauge in a Depressurize setup, the Green tube goes to the plastic port on the
Flow Conditioner which MUST be used when depressurizing and must include the piece of rigid foam
with holes that looks like a piece of packing material but is essential to allowing the Duct Blaster to
measure in the depressurization direction accurately.
Figure 9: Flow conditioner installed for Depressurize*
Figure 10: Duct Blaster Flow conditioner plastic tap*
*Flow conditioner pictures courtesy of The Energy Conservatory, Inc.