hajdu HB300 Installation, Usage And Maintenance Manual page 81

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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.
Figure 7.2.-2.
Straight-line
s pressure
drop
(mm) (PA / m)
 190 2
2
Air outlet
Straight-line Bent pressure
length
(PA / m)
(m)
10
10
Air inlet
Air inlet
Bent
drop quantity
2 5
2 5