Blower Door Fan Pressure Chart

Benefit from the high accuracy of the blowerdoor measuring technology.

Blower door fan pressure chart. Decrease the airflow and the pressure difference is decreased. The digital gauge is shipped in a separate padded case which is stored in the blower door accessory case. 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. 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.

Belt driven arrangements are available for even more flexibility. Blower door fan case. 5210 dual blower door system. As you can see in the photo the blower door is installed in an exterior doorway.

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. 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. Select fan using fan performance tables for 1500 cfm at 12 wg. Quick connect collar for 300 ductester.

In addition both gauges are able to directly display air flow through the blower door fan. Multiple wheels and inlet sizes are offered to provide extensive direct drive performance ratings. Clear flange for ductester. Leakage by using a calibrated fan to depressurize a house.

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. 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. Cincinnati fan manufactures eight sizes of cast aluminum pressure blowers. How a blower door works.

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. 6100 high pressure blower door system. Chart found on page 4 of instructions for how to properly select a fan or blower.

At 4 or rather 5 flow rings d e the accuracy of the blowerdoor testing flow rings as well as that of the pressure gauge dg 700 1 or dg 1000 0 9 clearly exceed the minimum legal.