Retrotec DucTester 351 - Manual (Page 3)

□
Go to Home screen on the gauge.
□
Adjust fan speed knob clockwise
until [Channel A] reaches test pressure.
□
I f you cannot achieve the test pressure,
go to Step 5.
□
Connect Speed Control Cable to your
fan.
□
For a test pressure of
80 Pa, tap
□
Enter 80, tap [Set]
□
T ap
to display what the
result would be at
exactly 80 Pa
.
Page 3 of 4
Step 3: Connect gauge & fan
□
Insert blue tube into the
duct
□
Read results directly from the gauge.
Speed Control Cable
□
Connect power cord.
□
Connect yellow and green
tubes to matching color
ports on fan. Plugging in
the Speed Control Cable
will disable the knob. It is
connected later in Step 4.
□
Connect Flex Duct Adapter to fan inlet for
depressurization.
Ready to conduct the test by depressurizing the ducts:
Step 2: Connect to ducts (cont’d) Total Duct Leakage Test: Depressurize
Step 4: Conduct test
To pressurize, connect the Flex Duct Adapter to fan
exhaust. All other connections remain the same.
pressurize
Inlet
airflow
Exhaust
Inlet
with Range Plugs
inside the Adapter
Exhaust
depressurize
Solid green Status light
indicates gauge is ready to
control the speed.
airflow
-80