Air exhaust
To reduce the number of air changes needed per hour and improve stability and control of the environmental
conditions, HP highly recommends using the air exhaust kit and connecting it to an air extraction system, to
remove air expelled by the top cover fans. The design, assembly and adjustment of the air exhaust installation
should be done by an experienced HVAC installer.
If you decide to use an extraction system, HP highly recommends the presence of a specialist or qualied
technician during the installation.
Air exhaust system specications
The pressure relative to the atmosphere at hood output should be −10 ± 5 Pa.
There are various possible ways to distribute the air pipes: among others, two pipes for each printer (one for
each air collector), or two pipes connected to a main pipe. Make sure that the installation is compliant with the
following air extraction ows:
● Collector left: 510 ± 30 m³/h (300 ± 18 ft³/min)
● Collector right: 240 ± 15 m³/h (141 ± 9 ft³/min)
● Common pipe: 750 ± 45 m³/h (441 ± 26 ft³/min)
HP recommends installing two ducts, one for each collector, connected with an inverted Y pipe connector to a
single duct. The recommended duct diameters for best air extraction are:
● Left-side input duct diameter: 200 mm (7.87 in)
● Right-side input duct diameter: 200 mm (7.87 in)
● Common output duct diameter (after inverted Y): 250 mm (9.84 in)
14 Chapter 2 Site preparation requirements for the printer ENWW
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