6100 high pressure blower door system.
Blower door fan pressure chart.
The manufacturer recommends the calibration of blowerdoor fans every four years.
Model 3 flow conversion table revised january 2007 flow cfm flow cfm fan open fan open pressure pa fan ring a ring b ring c pressure pa fan ring a ring b ring c 122 5282 1978 656 251 124 5324 1994 661 254 126 5365 2010 666 256 128 5407 2025 672 258 130 5448 2041 677 260 132 5489 2056 682 262 134 5529 2071 687 264.
The equipment consists of a variable speed fan fan speed controller adjustable door frame for sealing the opening and a set of manometers to measure the pressure differential between the inside and outside of the house.
If the suction pressure on the inlet side of a blower will exceed 15 inwg a correction for suction pressure called rarefication should be made.
Per flow ring open fan and rings a e or 1 4 the calibration includes testing three values each in the lower mid level and upper flow rate measuring range in a chamber test stand at a pressure differential of 50 pa.
Measuring air leakage using a blower door system depends on the relationship between pressure air flow and the holes.
Maintain the high accuracy of your blowerdoor measuring technology by regularly submitting it to a calibration.
Select fan using fan performance tables for 1500 cfm at 12 wg.
Leakage by using a calibrated fan to depressurize a house.
How a blower door works.
Blower door fan case.
5210 dual blower door system.
Benefit from the high accuracy of the blowerdoor measuring technology.
The digital gauge is shipped in a separate padded case which is stored in the blower door accessory case.
Cincinnati fan manufactures eight sizes of cast aluminum pressure blowers.
Blower door testing measuring building air leakage natural driving forces air leakage not measurable because pressure differences are small and variable blower door air leakage is measurable with the blower door because the pressure difference is larger and steady.
As you can see in the photo the blower door is installed in an exterior doorway.
Decrease the airflow and the pressure difference is decreased.
In addition both gauges are able to directly display air flow through the blower door fan.
300 passive house system.
As the airflow generated by the fan is increased across the hole in the blower door the pressure difference between the inside and outside is also increased.
Belt driven arrangements are available for even more flexibility.
Multiple wheels and inlet sizes are offered to provide extensive direct drive performance ratings.
Measurement channels which allows you to monitor the building pressure and fan pressure air flow signals during the blower door test.
Chart found on page 4 of instructions for how to properly select a fan or blower.
