Hitachi CH-12.0NE Installations- Und Betriebshandbuch Seite 9

2.2. REFRIGERANT CYCLE
2.2.1. CH Unit - CH-(4.0/8.0)NE
To Indoor Unit
High
Pressure
Gas Line
Low
Pressure
Gas Line
Refrigerant Flow Direction (Cooling Operation)
Refrigerant Flow Direction (Heating Operation)
No Description
1 Solenoid Valve (AC)
2 Strainer
3 Check Valve
4 Capillary Tube
5 Capillary Tube
NOTE:
The mark of inside "[ ]" is shown in the electrical wiring diagram.
Flare Connection
Brazing Connection
Field Refrigerant Piping
Material Size
O.D.(mm) × thickness (mm)
Mark
CH-4.0NE
∅2.5x0.7
a
∅12.7×1.0
b
∅9.53×0.8
c
∅6.35×1.07
d
∅9.53×0.8
e
∅12.7×1.0
f
∅4.0x0.8
g
∅12.7×1.0
h
∅15.88
j
∅12.7
k
STRUCTURE
To Outdoor Unit
High Pressure
Gas Line
Low
Pressure
Gas Line
Low
pressure
gas line
Material
CH-8.0NE
∅19.05×1.65
∅15.88×1.2
∅15.88×1.2
Copper Tube
C1220T-O
∅4.0x0.5
∅19.05×1.65
∅19.05
∅15.88
3