Refrigerant Piping - Hitachi RPC-3.0FSN3E Installations- Und Betriebshandbuch

REFRIGERANT PIPING

4 REFRIGERANT PIPING
4.1 PIPING CONNECTION
The refrigerant piping can be connected to some one of 3
directions 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.
4.1.1 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,
according 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.
 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.
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Liquid piping
Gas Piping
Drain Piping
Drain Piping
Air Inlet Grille
Unit
Rear Side
 Push
7 PMML0320A rev.4 - 08/2016
manuals search engine
Upper Side
1 Knockout hole
Open the Knockout hole
50
155
2 Seal piping
M4 screw
Sealing Plate
Refrigerant Liquid Piping
A
Sealing Plate
B
Rear Side
1 Knockout hole
2 Seal Piping
Factory-Supplied Sealing Plate
(0.8x118x142 mm)
Knockout
Refrigerant Gas Piping
Refrigerant Liquid Piping
P
M4 Screw
Sealing
Plate
95
M4 Screw
125
*145
4.1.2 Size of piping connection
Piping size
Model RPC-(3.0 - 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)