Unique CU Series - Air Duct Installation

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7.6.3 Drilling a Hole in the Wall for Drainage and Inter-Unit Connections
• To make the connections between the indoor and outdoor units, a 70 mm hole should
be drilled for the refrigerant lines, drainage hose and electrical cable passage, through
the wall, as shown in Figure 7-6.
• Make sure to drill outwards and downwards, so that the opening in the outside wall is
at least 10 mm lower than the opening on the inside.
• Route the drainage hose at the bottom of the hole.
• Fill in the remaining gap with an appropriate sealant.
Fig. 7-6
7.7 Air Duct Installation
• The air ducts should be constructed of 0.7-0.8 mm galvanized metal sheet.
• To obtain optimal results, duct cross sections, connections, elbows and branches must
be properly designed. We highly recommend seeking for expert advice on this matter.
• Air ducts should be properly insulated (preferably on the inside) with 50 mm thick
fiberglass insulation having density of at least 24 Kg/m
3
.
• See Figure 7-7 for general guidelines.
Fig. 7-7
CONCRETE
SLEEVE
AIR DUCT
RUBBER
DRAIN HO SE
AIR INTA KE G RILL C EIL IN
G
2 min
C E IL IN G
CUSHION
CONNECTION