Retrotec DU200 DucTester Testing Procedures to meet EnergyStar Standards - Manual (Page 3)

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4.3 Envelope leakage test to meet ENERGY STAR standards
1. Remove Grill Mask and DucTester.
2. Connect the Door Fan to blow outdoors.
3. On the DM-2:
a. Press [Mode] until “Air Chg”
appears. If unavailable, see Page 4.
b. Press [Device] to get “Retrotec 1000”.
c. Press [Range Config] to get "B".
4. Press [Enter Volume ], enter volume in
cubic feet, then press [Enter] to lock in
the volume for each house.
5. Press [Set Pressure] [50] [Enter].
6. Press the [@] key until “@50 Pa” is
displayed.
7. Record the envelope leakage in air
changes at 50 Pa.
Total building
leakage under
depressurization is
the most common
test direction for
residential testing.
Connect green
tube on some
models.