Panasonic CS-Z25UD3EAW Service Manual page 40

12.1.3 Installing the Indoor Unit (Installation Embedded in the Ceiling)
12.1.3.1 Preparation before installation

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.
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.
Required Minimum Space for installation and Service

H dimension means the minimum height of the unit installation space.

Select H dimension such that a downward slope of at least 1/100 is ensured. Refer to 12.1.4 "Connecting the
drain piping"
CAUTION
824 (Suspension bolt pitch)
Min.
200 or
more
Flange for air outlet duct
Min. 100 mm or more for bottom air intake
Electrical
component box
Inspection
access
450 x 450
Refrigerant tubing
Min. 650 or more
Min. 20 or more
Min. 20 or more
Ceiling
40