Leakage to Outdoors
When pressurizing a building with a blower door, did you know that extra tubing must be added to the Channel B side of your gauge if you are not using a Retrotec DM32? If this tubing connection is neglected, you will have a reading that is approximately 20% high due to the open Channel B port that is referencing the indoor pressure of 50Pa instead of the outdoor pressure. Therefore, the extra tube is needed to connect that port on Channel B to the outside so that it is referencing the outside instead of the pressure induced by the blower door.
However, the Retrotec DM32 automatically removes the need to connect additi
Leakage to Outdoors and Advanced DucTesting Methods
-When is it required?
-Additional leakage to the outdoors tests