TEC MINNEAPOLIS BLOWER DOOR 3 User manual

MODEL 3
MINNEAPOLIS BLOWER DOOR™
USING THE DG-1000 WITH THE
MINNEAPOLIS BLOWER DOOR

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USING THE DG-1000 WITH THE MINNEAPOLIS BLOWER DOOR
Before the Test
• Install the blower door frame, panel and fan into an exterior doorway. For instructions about how to do this, please see
Chapter 2 of the Minneapolis Blower Door User Manual.
• Prepare the building for the blower door test. For instructions about how to do this, please see
Chapter 3 of the Minneapolis Blower Door Manual.
Tubing Hookup
1. Attach one end of the green tube to the Channel A reference tap. Run the other
end of the tubing outside through one of the holes provided in the lower corner
of the nylon panel and away from the ow of the fan.
2. Attach one end of the red tube to the Channel B input tap. Attach the other end
of the red tube to the pressure tap on the blower door fan.
Note: For help with how to connect the tubing to the DG-1000, please use the Tubing Assistant on our website.
Conducting the Test
1. Turn on the DG-1000 gauge by pressing and holding the power button for a few seconds
2. After the Home screen loads, touch Gauge to open the Gauge app
3. Touch the mode area to open the Channel B Settings menu. Select Flow @50. Touch device and then select Model 3 Fan. Touch
the arrow in the upper left of the screen to return to the Gauge app screen.
Note: In this specialized test mode, Channel A measures building pressure while Channel B displays the estimated building
leakage at a test pressure of 50 Pascals (CFM50). The leakage estimate shown on Channel B is determined by mathematically
adjusting the actual air ow from the blower door fan to a test pressure of 50 Pascals, using the real-time Channel A building
pressure reading and a Can’t Reach 50 factor, which can be found in the Blower Door Manual on page 9.
Power button
Mode Flow @50 Model 3 Fan
CONDUCTING A ONE-POINT DEPRESSURIZATION TEST

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4. With the fan inlet still covered, touch Set Baseline to initiate the building baseline
measurement procedure on Channel A.
5. During a baseline measurement, Channel A will display a long-term average
baseline pressure reading while Channel B is used as a timer in seconds to
show the elapsed measurement time. When you are satised with the baseline
measurement, touch enter and enter the baseline reading into the gauge.
6. Channel A will now display the baseline adjusted building pressure value.
7. Remove the No-Flow Plate from the Blower Door fan and install the ow ring
which you think best matches the needed fan ow (see table below.)
8. Check (and adjust if necessary) the selected test device (i.e. fan) and conguration (i.e. ow ring) shown in the Gauge app to
match the fan and ow ring being used in the test.
9. Turn on the blower door fan.
Using Cruise Control
1. Turn the blower door speed control knob to the “just on” position (the controller is
on but turned all the way down).
2. Set the cruise target by touching the Cruise menu and selecting 50 Pa.
Note: The fan control cable must be connected to the DG-1000 and the fan speed
controller for this feature to work.
USING THE DG-1000 WITH THE MINNEAPOLIS BLOWER DOOR
(Optional)
(Optional)
(Optional)
Set baseline

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3. Touch the green play icon to start cruise. Once cruise is started, the fan speed slider will move on it’s own. The green play
icon will change to an X, and a red stop icon will appear in the lower right of the screen. A pop-up will appear at the bottom of
the screen to indicate that cruise has started.
4. The blower door fan will now slowly increase speed until the building depressurization displayed on Channel A is
approximately –50 Pa.
5. Cruise will turn off when the X is touched, but the fan will continue running. When the X is touched, a pop-up will appear at the
bottom of the screen that says “Cruise canceled.” Touch the red stop icon in the bottom right corner of the screen to stop the fan.
When the fan is stopped a pop-up will appear at the bottom of the screen that says “fan stopped.”
5.1 Controlling the Fan with the Gauge app
Touch and slide the dot on the fan speed slider in the Gauge app to adjust the fan
speed using the DG-1000. As the fan speed increases, the building depressurization
displayed on Channel A should also increase. Continue to increase the fan speed until
the building depressurization shown on Channel A is between –45 and –55 Pa.
USING THE DG-1000 WITH THE MINNEAPOLIS BLOWER DOOR
Cruise canceled Fan stopped
Start cruise
Cruise started
Cruising screen

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5.2 Manually Controlling the Fan
Gradually increase the fan speed by slowly turning the fan controller clockwise. As
the fan speed increases, the building depressurization displayed on Channel A should
also increase. Continue to increase the fan speed until the building depressurization
shown on Channel A is between –45 and –55 Pa.
6. Channel B will display the one-point 50 Pa leakage estimate. Record this number.
If the leakage estimate is uctuating more than desired, try changing the time
average setting on the gauge by touching the Time Average menu and choosing
the 5 or 10 second or long-term averaging period.
7. Turn off the blower door fan. If you are using cruise control, this is done by touching the red stop icon in the Gauge app.
8. “-----” or “LOW” appearing on Channel B
• Whenever “-----” or “LOW” appears on Channel B in the Flow @ 50 mode, the gauge can not calculate a reliable leakage
estimate. The messages “-----” and “LOW” appear on Channel B under the following conditions:
»“-----” is continuously displayed when the building test pressure from Channel A is below a minimum value of 10 Pa.
Estimating building leakage results when the test pressure is below this value may result in large errors. If possible,
install a larger ow ring or remove the ow rings to generate more fan ow. Be sure the fan is off when changing
ow rings.
»Channel B reads “LOW” is continuously or LOW alternates with a ow reading when the air ow reading through
the device is unreliable (i.e. you are trying to measure a ow outside of the calibrated range of the test device in
its current conguration). If possible, you should change the test device conguration to match the ow rate being
measured (e.g. install a ow ring or a smaller ow ring). Be sure the fan is off when changing ow rings.
USING THE DG-1000 WITH THE MINNEAPOLIS BLOWER DOOR

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USING THE DG-1000 WITH THE MINNEAPOLIS BLOWER DOOR
Before the Test
• Install the blower door frame, panel and fan into an exterior doorway. For instructions about how to do this, please see
Chapter 2 of the Minneapolis Blower Door User Manual.
• Prepare the building for the blower door test. For instructions about how to do this, please see
Chapter 3 of the Minneapolis Blower Door Manual.
Tubing Hookup
1. Attach one end of the red tube to the Channel B input tap. Attach the other end
of the red tube to the pressure tap on the blower door fan.
2. Attach one end of the green tube to the Channel A reference tap. Run the other
end of the tubing outside through one of the holes provided in the lower corner
of the nylon panel.
3. Attach one end of the clear tube to the Channel B reference tap. Run the other end of the tubing outside through one of the
holes provided in the lower corner of the nylon panel. The end of the clear tubing should be placed next to the side of the fan,
but not in the fan’s airstream.
Note: For help with how to connect the tubing to the DG-1000, please use the Tubing Assistant on our website.
Fan Direction
Before conducting the pressurization test, make sure the fan direction is reversed by
removing the fan from the nylon panel, and re-inserting it with the exhaust side facing
inside the building.
Conducting the Test
Once the equipment has been setup, follow the instructions in the depressurization test section of this guide (page 2).
CONDUCTING A ONE-POINT PRESSURIZATION TEST

2801 21st Avenue South
Suite 160
Minneapolis, Minnesota 55407
Phone: [phone]
Fax: [phone]
[e-mail]
energyconservatory.com
© 2017 The Energy Conservatory
Updated Aug 2017, V1
Software Information
The Energy Conservatory (TEC) offers a variety of Windows-based programs. These programs can be found and downloaded for free
at software.energyconservatory.com.
TEC also offers driver support for the DG-500, DG-700 and DG-1000. The drivers are designed to work with Windows-based
computers with the following operating systems:
• Windows 7
• Windows 8
• Windows 8.1
• Windows 10
The drivers are available through Windows Update, and the DG-500 and DG-700 drivers can be downloaded from TEC at
software.energyconservatory.com.
TEC also offers mobile apps for Apple and Android devices that can be found in the Apple App Store or the Google Play Store.
Instructional Videos
The Energy Conservatory (TEC) offers a variety of online instructional videos, including
• Minneapolis Blower Door Quick Guide
• Minneapolis Duct Blaster Quick Guide
• Field Calibration Checks for Gauges
• Pressure and Airow Basics
• Exhaust Fan Flow Meter
• TECLOG3
• TECTITE 4.0
• And many more
Visit www.YouTube.com/EnergyConservatory to see all of TEC’s instructional videos.
More Blower Door Guides
All blower door guides are available online at energyconservatory.com/blowerdoorguides
Please refer to the guides listed below for further instructions.
USING THE DG-1000 WITH THE MINNEAPOLIS BLOWER DOOR
• Minneapolis Blower Door Overview
• Minneapolis Blower Door Manual
• Using the DG-700 with the Minneapolis Blower Door
• Test Results and Sample Test Forms