Drilling A Hole In The Wall For Drainage And Inter-Unit Connections; Air Duct Installation - Tadiran Telecom ANL-100 Service Manual

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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 Fig. 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 wall hole gap with an appropriate sealant.

7.7 Air Duct Installation

• The air ducts should be constructed of 0.7-0.8 mm galvanized metal sheet.
• To obtain optimal results, dust 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
• See Fig. 7-7 for general guidelines.
CONCR ETE
CEILING
R UB BER
CUS HION
DRAIN HO SE
CONNE CTION
Fig. 7-6
AIR INTAKE G RILL
Fig. 7-7
3
.
- 29 -
SLEEVE
AIR DUCT
2 min
CEILING