Retrotec FanTestic Integrity (ISO) - Manual (Page 31)

rev-2014-10-27
Page 31 of 50
©Retrotec Inc. 2012

“Temperature, initial”
These are the indoor and outdoor temperatures at the start of the test. They are used to
correct for flow rates through the fan, since air densities are different at different
temperatures. Airflow correction due to temperature change is required for compliance with
ISO 14520.

“Atmospheric pressure”
The pressure due to the weight of air in the Earth’s atmosphere, which changes with elevation.
This value can be accurately found from the local weather network. The default value of the
Atmospheric pressure in FanTestic Integrity is set at 101.3 kPa.

“Induced pressure”
The pressure in the enclosure as a result of the airflow induced by the Door Fan.
Induced pressures are read from the gauge as “PrA”. ISO 14520 requires testing at least 5
points between 10 and 60 Pa in both directions.
Note: If you are testing in the Depressurization direction, you must enter the negative sign,
“-“ in front of the pressure. When you have done so, you will see a Depressurization label:
When manually entering data into FanTestic Integrity, set the time averaging on the gauge
to at least 20 seconds for induced pressure and flow 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 check if the pressure fluctuation is above 2
Pa. If so, double the time averaging for the induced pressure and flow readings to 40
seconds.

“Test Fan”
“Test Fan” data can be input as Fan Pressures, in units of Pa, (which allows FanTestic
Integrity to calculate air flow rates through the Door Fan) or can be entered manually as air
flow rates through the Door Fan, in units of CFM, m
3 /h, m 3 /s, or L/s.
Most commonly, you would enter “Test Fan” data from the “Flow” readings in the units of
CFM from the gauge, or another unit of your choice. Whichever unit you choose, you must
select the unit in the software. To select the unit, click the button and scroll to the