Hitachi P-N23NA2 Service Manual

2 Unit installation
RPI - Ducted indoor unit (16/20)FSN3PE(-f)
SMGB0099 rev.0 - 12/2016
57
2

Drain Pan Level
Front View
- Check to ensure that the foundation is at, taking
into account the maximum foundation gradient.
- The unit should be installed so that the Drain Pan
side of the unit is slightly (approximately 5 mm)
lower than the opposite side, in order to avoid the
incorrect position of the drain discharge.
- Tighten the nuts of the suspension bolts with
the suspension brackets after adjustment is
completed.
- Special plastic paint must be applied to the bolts
and nuts in order to prevent them from loosening.
- Fasten the tubing to the drain hose with an
adhesive and the factory-supplied clamp. The
drain piping must be performed with a down-slope
pitch of 1/25 to 1/100.
5 mm
? NOTE
Keep the unit as well as relevant equipment covered with the vinyl cover during installation work.

Air duct connection
Fix the Flexible Air Duct to External Faces of unit anges
(the unit is equipped with factory supply anges for this
purpose).
It is recommended to use a Flexible eld supply Duct
portion in order to avoid any abnormal sound vibration.
RPI-units are supplied with standard Air Filter at the
suction side. This lter is provided for the cases in which
no Suction Duct is applied (or it is very short).
It is recommended the following indications depending on
the installation.
• Keep the standard Air Filter in case of no Suction Duct
is applied (g.1).
• In case of applying Suction Duct, it is recommended
to apply Air Filter at the inlet point of Suction Duct,
removing the standard Air Filter of the unit (g. 2).
Outlet Air
Outlet Air
Fig.1
Fig.2
Inlet Air
Inlet Air
Air Filter
(Factory supplied)
Insulated Duct
(Installed on the
outer side of the
anges)
Air Filter
(Factory-supplied or
adapted factory one)
Flexible Duct Installation
(Rubber or Textil Material)

Maintenance of the suction air lter
Filter maintenance could be performed from right or left
side of the unit.
Remove lter support (x2 screws / each support) and pull
out the lter from the handle.
In those installations where the servicing space is narrow,
the lter could be bent (in three pieces) when pulling it out.
Air Filter Support
Removing Direction
Air Filter

Hitachi P-N23NA2 Specifications

General

Brand	Hitachi
Model	P-N23NA2
Category	Air Conditioner
Language	English