Blower Door Fan Pressure Chart

The digital gauge is shipped in a separate padded case which is stored in the blower door accessory case.

Blower door fan pressure chart.

6100 high pressure blower door system. 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. 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 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.

Blower door fan case. Clear flange for ductester. 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. Decrease the airflow and the pressure difference is decreased.

Benefit from the high accuracy of the blowerdoor measuring technology. Measuring air leakage using a blower door system depends on the relationship between pressure air flow and the holes. 5210 dual blower door system. Cincinnati fan manufactures eight sizes of cast aluminum pressure blowers.

Quick connect collar for 300 ductester. In addition both gauges are able to directly display air flow through the blower door fan. As you can see in the photo the blower door is installed in an exterior doorway. Leakage by using a calibrated fan to depressurize a house.

Select fan using fan performance tables for 1500 cfm at 12 wg. How a blower door works. Chart found on page 4 of instructions for how to properly select a fan or blower. Multiple wheels and inlet sizes are offered to provide extensive direct drive performance ratings.

Belt driven arrangements are available for even more flexibility. Maintain the high accuracy of your blowerdoor measuring technology by regularly submitting it to a calibration. The manufacturer recommends the calibration of blowerdoor fans every four years. 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.

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.