Retrotec DucTester 200 series with DM32 - Manual (Page 2)

Make sure DucTester 240 is showing on the
Home screen with “Mid” Range.
If not, tap the fan picture, then
Tap , tap DucTester 240, thenthen select
the range that you have installed.
Tap on [Channel B] to change the type of result
or units. Select based on “Get the results you
need” on page 4.
Tap [Settings] then [Time averaging] and
select 5 seconds.
Tap [Settings] then .
Make sure the [Default @ Pressure] is 25 Pa.
Make sure “n” value is set to 0.60 for Ducts.
Tap to return to the Home screen.
Step 1: Prepare ducts and house
□
Seal all supply and return grills/registers, including
any exterior air inlets, with Grill Mask or tape.
□
Open all interior doors leading to rooms containing
a supply or return register, and open an exterior door
or window.
□
Shut off all HVAC (exhaust fans, dryers, A/C, furnaces).
Page 2 of 8
Step 2: Connect to ducts
□
Turn off air-handler
and remove all filters.
□
Tape Flange to main
return or air handler
cabinet using
masking tape.
□
Attach Flex Duct to
Flange.
□
Install Mid-Range Ring to start,
as most systems can be tested
on this Range Configuration.
□
Tap on gauge and select
range to match fan,
whenever a Range Ring is changed.
Prepare the gauge
Mid
Low
Open
Remove Range Rings for
leakier ducts, add Rings
for tighter ducts.
Next, prepare the ducts, house and fan following Steps
1 through 3.