Retrotec 5000 Blower Door with DM32 - Manual (Page 2)

Make sure the device shown on the Home
screen matches your fan. To change device,
tap the fan picture, then the [Change
Device] key.
Select your device from the graphics under
“Retrotec Blower Doors” then select the
Range.
Use Range Ring B for most houses, try “C8”
for tighter new houses, or “A” for leakier older
houses. For 300 fans, start with Open Range.
Tap on [Channel B] to change the type of
result or units. Refer to gauge and “Resi-
dential Pressure & Air Leakage Testing, Ap-
pendix A” manuals for guidance.
Tap [Settings] then [Time averaging] to
adjust the time averaging. 5 seconds is OK
for a calm day. 10 or 30 seconds can be
used on windy days.
Tap [Settings] then .
Make sure the [Default @ Pressure] is set to
50 Pa.
Step 4: Desired results not achieved?
Cannot achieve test pressure at full speed?
If fan reached 100% speed but could not achieve 50 Pa:
□
Ensure that all doors and windows are closed.
□
If possible, use Range with larger opening to get
more flow and try again.
□
Change [Range] on the gauge to match.
□
Re-adjust fan speed.
Flow reads “--” at test pressure?
If the test pressure has been reached, but “--” appears,
the fan is running too slowly to accurately measure flow.
□
Add the next lower Range
□
Change [Range] to match
Gauge set up
□
Gauge [On], tap [Settings] then [Baseline].
□
Tap [Capture Baseline]. After 20 seconds on a calm
day or 60 seconds on a windy day, tap [End Capture]
then [On] to return to the Home screen.
□
Uncover fan. Install Range Ring B (Open for 300 fan).
□
Ensure gauge shows correct Range on Home screen.
Step 3: Conduct depressurization
test, (CFM@50)
□
Disconnect Speed Control Cable, turn knob to zero
then adjust until pressure is about 50 Pa.
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□
Tap [Set Pressure] [50] [Set] [@] to calculate what
the flow would be at exactly 50 Pa.
□
Tap to return to the Home screen.
Open B8
5000
5000
5000
5000
B8
B8
B8 B4