Panasonic WH-ADF0309J3E5CM Service Manual page 98

12.1.3 How to Install the Indoor Unit

Middle Static Pressure Duct Type (Type F3)
12.1.3.1 Required Minimum Space for Installation and Maintenance Services
< Horizontal installation >

This air conditioner is usually installed above the ceiling so that the indoor unit and ducts are not visible. Only the
air intake and air outlet ports are visible from below.

The minimum space for installation and maintenance services is shown in the figure.
1,067 (Suspension bolt pitch)
Min.
250
Minimum space for installation and
maintenance services
< Vertical installation >
Min. 250
Inspection
access
450 × 450
(Field supply)
(200)
Min. 650
Min. 650
98
Ceiling Opening section
Floor
* It is necessary to make space for the cleaning as well
as the maintenance of the drain pan and the heat
exchanger.
Do not put any obstacle not to cause obstructing
maintenance or cleaning works.
If the place where the ceiling material cannot be
removed, make an opening section below the bottom
surface of the indoor unit in order to take it out.
If it is impossible to provide an opening, make space
more than 300 mm between the indoor unit's bottom
surface and the ceiling material.
Duct
Grille *
Min.
300
* Make it possible to open / close for maintenance services.
Unit: mm
Min. 20
Unit: mm