Retrotec Leakage Split Kit - Manual (Page 4)

QG220 Page 4 of 4 rev-2008-04-07
Step 4: Check for Pressure Neutralization
With the pressure test in progress, lift
one of the ceiling tiles and use a smoke
puffer to test for movement. When the
smoke does not move the lower leaks can
be measured.
Field Calibration Plate is mounted in the door panel above
the fan. A test is conducted on a tight room and the
Equivalent Leakage Area (EqLA) measured. A hole is opened
in the Plate and EqLA re-measured. The increase in EqLA
should be within 15% of the size of the added hole. This is an
ideal tool for teaching Door Fan use or for checking your
system on a regular basis to ensure it is working correctly.
Raised Floor Adapter Panel is installed over a removed floor
tile to measure the leakage of a raised floor. To eliminate
the leakage of the “walked on floor”, a second fan in a
panel is used to pressurize the room to the same pressure as
the floor. Smoke is used to test floor leaks to ensure the
pressures are balanced between the room and the under-
floor. When they are, the floor fan is measuring the leakage
below the floor. An ideal way to measure the Lower Leak
Fraction.