Retrotec FanTestic Integrity (ISO) - Manual (Page 30)

rev-2014-10-27
Page 30 of 50
©Retrotec Inc. 2012
24 hour time is automatically entered by the computer when you start a new test. If this
time does not match the time you start your test, you can click to update the
time that will be recorded in your generated test report.

“Operator location”
Select whether the operator is located inside or outside the enclosure during the test (inside
is typical). Operator location is used in conjunction with the sign (positive or negative) from
the “Induced pressure” readings, to determine the test direction (Pressurization or
Depressurization).

“Bias pressure during fan test”
The pressure before a pressurization or depressurization test begins, while the fan is sealed
and turned off. Bias pressure values correct the induced pressure readings from pressures
other than what is induced by the airflow of the Door Fan.
When manually entering data into FanTestic Integrity, set the time averaging on the gauge
to at least 60 seconds for baseline readings. This must be done in order to compensate for
the effects of wind and to ensure that you get an average reading. On windy days you will
have to take readings for a longer period of time. To determine if it is windy, set your gauge
25 second averaging and if the pressure fluctuation is above 2 Pa. If so, double the time
averaging for the baseline to 120 seconds.
According to ISO 14520, bias pressures measured at the time of the Door Fan test must be
within a range of ±3 Pa.
If the value entered is outside these bounds, a warning will result similar to the following:
Note: If you’ve used the [Baseline] function on a Retrotec gauge, you should first copy this
Baseline into FanTestic Integrity as the “Bias pressure during fan test”, then clear the
Baseline from the gauge.
Otherwise, the induced pressure value will have the bias pressure subtracted twice – once
on the gauge and another time in FanTestic Integrity software.