Retrotec DucTester 341 - Manual (Page 14)

Page 14 of 83
©Retrotec Inc. 2014
3. Model 300 / 400 System Types:
The Model 341 shares its body and inlet nozzles and Flow Plates with several other models as shown
below. Each one is specialized for a certain application. The Model 341 is used primarily in the US for
relatively leaky US made ducts. The Model 351 is for tighter European ducts that often have to be 100
times tighter than US ducts. The Model 301 is simply the same fan but attached to a door panel for
testing tight houses, apartment, rooms or enclosures. The Model 451 is meant exclusively for testing
commercial ducts at 10 to 100 times the test pressure used for US residential duct that are tested at 25
Pa normally and sometimes 50 Pa. the Model 451 has 10 times the power and is much heavier than the
451 but still a fraction of the old fashioned Commercial duct testers in common use.
This manual focuses on the Model 341. Be sure to refer to the Quick Guide that came with your system
or can be obtained at:
http://retrotec.com/sites/default/files/manual-guides-specs/QuickGuide-DucTester%20341-QG341.pdf
341 351 301 451
The US DucTester system is
powerful enough to test
leaky ducts found in old
homes and tight ducts in
new homes. Special
purpose low ranges go
down to 5/100 CFM. ‘European DucTester’
tailored for airtight
European ducts. Just
add the aluminum
frame to test houses. The Model 300 is ideal
for testing tight houses
as large as a 1600
square feet of floor area
that leak as much as 3
Airchanges per Hour. Commercial duct
testing up to 20 in WC
(5000 Pa) in a
compact 33 lb
package.