hajdu HB200 Manuel De Mise En Service, D'opération Et D'entretien page 80

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Air outlet
Air inlet and air outlet are connected to air duct. A + B  10 m
- Duct description
Duct size Dimension
Round duct
Rectangle 190x190
duct
Remark: It is better to connect the air duct to air outlet than to air inlet.
Remark: Due to operation with air duct, part of air flow and heat pump capacity is
lost in the system.
Air inlet is not connected to air duct, but air outlet is connected to air duct. A  10 m
Figure 7.2.-2.
Straight-line
s pressure
drop
(mm) (PA / m)
 190 2
2
Air outlet
Figure 7.2.-3.
Straight-line Bent pressure
length
(PA / m)
(m)
10
10
Air inlet
Air inlet
Bent
drop quantity
2 5
2 5