Panasonic CU-E18DBE Service Manual page 55

11.2.3. INSTALLING THE INDOOR UNIT (INSTALLATION EMBEDDED IN THE CEILING)
• Always provide sufficient entry and exit space to allow installation work, inspection and unit replacement.
• Waterproof the rear surface of the ceiling below the unit in consideration of water droplets forming and dropping.
CAUTION
When cooling operation is performed for an extended period under the following conditions, water droplets may form and drop. Attach
locally purchased insulation (foamed polyethylene with a thickness of 5 mm or more) to the outside of the indoor unit before installing into
the ceiling to improve heat insulation.
• Locations with a dew point inside the ceiling of 23°C or more.
• Kitchens and other locations that produce large amounts of heat and steam.
• Locations where the inside of the ceiling serves as an outside air intake passage.
• When installing into a ceiling, select the unit position and airflow direction that enable the cool and warm air to spread
out to the whole room.
• Do not place objects that might obstruct the airflow within 1 m below the intake grill.
CEILING OPENING AND HANGING BOLT LOCATIONS
• The relative positions of the ceiling opening and hanging
bolts are shown in the illustrations below. When making
an inspection opening below the unit, make a 960 mm
x 480 mm opening at the ceiling surface. Also, lead the
drain piping, refrigerant piping and indoor/outdoor
connecting cables up to the respective piping and cable
connection positions.
• Secure the hanging bolts (M10, locally purchased) firmly in a manner capable of supporting the unit weight.
• Consult your construction or interior contractor for details on finishing the ceiling opening.
Installing an Intake and Discharge Duct Type
Allowable duct length
Discharge side 5 m or less including
duct the intake side
Intake side duct 1 m or less
Installation Diagram
Duct bends
90° or less in one
location
45° or less in one
location
These diagrams show the unit together with the purchased components.
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CS-E15DD3EW CU-E15DBE / CS-E18DD3EW CU-E18DBE