CAPBs® set 4 Pa sens P00119
Domestic Technology
PDF
Check of underpressure limit value (4 Pa / 8 Pa ) in a sealed air system (building/apartment)
Acceptance of individual heat systems with simultaneous operation with exhaust air systems
If multiple heat systems using indoor intake air and ventilation systems are operated in a closed space, this can result in a hazardous low pressure. With the 4 Pa test, the underpressure limit value of 4 Pa/8 Pa can be checked and documented.