Retrotec Commercial 441 and 451 DucTester - Manual (Page 44)

Page 44 of 56
©Retrotec Inc. 2015
Step 3 – Connect DucTester to ducts
□ Attach 4 inch Flange to ductwork.
□ Attach 4 inch collar on flex to
flange
□ Connect DucTester exhaust to
flex
□ Install Range 47 Flow Plug Range 47 provides 52 to 206 CFM, which is sufficient to
test most duct runs.
Step 4 –Tubing, control and power connections
□ Connect yellow and green tubes between
DucTester and gauge
□ Connect blue tube to gauge and to ducts
using static probe or connection on flange
□ Plug in the Speed Control Cable between
DucTester and Gauge
□ Plug in to power source
Step 5 – Set up Test Pressure and Area in Gauge
□ Default in gauge must match the
specified Test Pressure
□
If not, tap [Settings] and
tap
Then [Set] value to specified Test Pressure.
Since you must not exceed the test pressure,
the actual pressure will be lower but entering
this default will ensure that all results are
displayed at the exact pressure entered.
□ [Area] then use the number pad and
tap [Set].
Measure the duct surface area in square feet
and enter it into the DM32. Select a limited
section of duct for which the estimated
leakage will not exceed the capacity of the test
apparatus. Area can also be accessed from
[Settings].