Refrigerant Piping - Hitachi RPC-FSN3E Installation And Operation Manual

Refrigerant piping

3 REFRIGERANT PIPING
3.1 PIPING CONNECTION
The refrigerant piping can be connected to some one of 3 direc-
tions of the indoor unit: upper, rear or right side, when facing the
unit.
• The positions of piping are shown in the figure
• Each direction has the prepared knockout hole as shown in
piping work sub-chapter.
• Cut the knockout hole for the required direction.
Liquid piping
Gas Piping
Drain Piping
3.1.1 PIPING WORK INSTALLATION
Piping work should be performed from the bottom side of the unit.
Remove the air inlet grille before beginning the piping work, ac-
cording to the following steps:
1 Slide the Knobs to the rear side.
 Slide
Knob
2 Open the air inlet grille
3 Push up and slide the air inlet grilles to the rear side.
Unit
 Open
Air Inlet Grille
After select the piping direction proceeded to knockout selected
hole, install pipes and seal the piping with the factory supplied
insulation as indicated below.
11 PMML0320A rev.2 - 09/2015
Upper Side
1 Knockout hole
2 Seal piping
Drain Piping
Rear Side
1 Knockout hole
2 Seal Piping
Air Inlet Grille
3.1.2 SIZE OF PIPING CONNECTION
Rear Side Piping size
 Push
Open the Knockout hole
50
155
M4 screw
Sealing Plate
Refrigerant Liquid Piping
A
Sealing Plate
B
Factory-Supplied Sealing Plate
(0.8x118x142 mm)
Knockout
Refrigerant Gas Piping
Refrigerant Liquid Piping
P
M4 Screw
Sealing
Plate
95
M4 Screw
125
*145
Model RPC-(2.0 - 6.0)FSN3E
Gas Piping
Liquid Piping
Liquid Piping
Gas Piping
Open the
Knockout hole
Sealing with insulation
Seal with
insulation-
15.88 (5/8)
9.52 (3/8)