Hitachi CH-4.0NE Manual De Instalación Y Funcionamiento página 17

CH-12.0NE
{
To
Indoor
Unit
3. When tightening the Flare nut, use two spanners as shown in below figure.
4. After connecting the refrigerant piping, seal the refrigerant pipes by using the field-supplied
insulation materials as shown in figure below.
Use the factory-supplied pipe with a flange to connect low-pressure gas piping. The gasket at the
unit gas piping inlet should be replaced to the one supplied with your unit.
(Thermal insulator over the flange connection should be field-supplied).
NOTE::
The factory-supplied flange should be welded with the connection pipe before connecting the
valve. Mount the Insulation's after the pipe brazing. Take particular care upon connecting
flange so that Insulation is correctly located.
To
Indoor
Unit
No
Pipe Size
∅6.35
∅9.53
∅12.7
∅15.88
∅19.05
{
Description
Insulation - Field Supplied – CH-4.0NE unit
Insulation - Field Supplied – CH-(4.0/8.0/12.0)NE units
- Field Supplied – CH-(4.0/8.0)NE
Insulation
- Included in CH-12.0NE unit as accessory.
REFRIGERANT PIPING WORK
}
To
Outdoor
Unit
Tightening Torque (N.m)
(1/4)
(3/8)
(1/2)
(5/8)
(3/4)
Remarks
11
No Description
Pipe Fixing Band
Liquid Pipe
High Gas Pipe
Low Gas Pipe
Gas Pipe
Pipe Flange
Field-Supplied
Piping
2
4
6
8
10
}
To
Outdoor
Unit