LEGALLAIS HB300 Manuel De Mise En Service, D'opération Et D'entretien page 75

- Duct description
Duct size Dimension
(mm)
Round duct
∅ 190
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
Recommendation: Use it in case of heat surplus or in winter in case of indoor heat
surplus.
Air inlet is connected to air duct, but air outlet is not connected to air duct. A ≤10m
Straight-line
s pressure
drop
(PA / m)
≤2
≤2
Air outlet
Figure 7.2.-3.
Air outlet
Figure 7.2.-4.
Straight-line Bent pressure
length drop
(PA / m)
(m)
≤10
≤10
Air inlet
Air inlet
Bent
quantity
≤2 ≤5
≤2 ≤5