Hitachi P-N23NA2 Service Manual

3 Piping work and refrigerant charge
Refrigerant and drain hose installation
SMGB0099 rev.0 - 12/2016
123
3
3.5.10 RPIM-(0.6-1.5)FSN4E(-DU) - Ducted indoor unit

Refrigerant pipe installation
The pipe connections are inside the unit. Access the refrigerant pipe connection by removing the fan cover on the unit.
Pipe connection
Lower panel
Electrical box
Pipe
connection
Electrical box
Lower panel
 Gas piping
 Liquid piping
 Drain pipe
The correct position for the refrigerant pipe connection is shown below.
Models Gas pipe mm (inches) Liquid pipe mm (inches)
RPIM(0.6–1.5)FSN4E Ø12.70 (1/2) Ø6.35 (1/4)
? NOTE
When installing the pipes, leave enough space for maintenance work in the electrical box of the unit.

Drain pipe installation
Drain hose installation:
1 Insert the drain hose in the clamp “A”.
2 Push the drain hose towards the boss until it reaches the end of
the pan.
3 Tighten the screw on the wire clamp to secure the pipe around
the drain connection without causing water leaks.
4 Insulate the drain hose around the wire clamp to avoid
condensation.
5 Insert the drain pipe into the drain hose and secure it using the
wire clamp “B”.
Clamp
B
Drain pipe
Clamp A
Insulation
Drain pipe
Drainage
Drain pipe
Drain pipe
Clamp A
Clamp B
Insulation
Drainage
? NOTE
If there is excessive clearance between the drain pipe connection and the drain hose, add a sealing material between both parts in order
to t and not deform the drain hose.

Hitachi P-N23NA2 Specifications

General

Brand	Hitachi
Model	P-N23NA2
Category	Air Conditioner
Language	English