hajdu HB300 Manuel De Mise En Service, D'opération Et D'entretien page 82

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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
Recommendation: This connection way used in the summer refreshes the air of the
indoor space.
REMARK
a) Due to connection with air duct, part of air flow and heat pump capacity is lost
in the system.
b) If the air outlet of the main unit is connected to canvas air duct, condensate
drops may be produced outside the canvas air duct during the operation of the
main unit. Please, ensure drainage of condensate water. In this case, it is
recommended to mount the heat insulation layer outside the air duct outlet.
All manuals and user guides at all-guides.com
Figure 7.2.-3.
Air outlet
Figure 7.2.-4.
Air inlet
Rain