Hitachi RAS-5HVRNM1E Service Manual page 85

3 Piping work and
refrigerant charge
Piping connection size of outdoor unit, indoor unit and distributor
Outdoor Unit
Liquid Piping
RAS-2HVRN1E
RAS-2.5HVRN1
RAS-3HVRNS Ø9.53
RAS-4HVRNS1E Ø9.53
RAS-5HVRNS1E Ø9.53
RAS-6HVRNS1E Ø9.53
RAS-8HRNSE Ø9.53
RAS-10HRNSE Ø9.53
N O T E
The sizes of the indoor and outdoor units are different. Adjust the flare adapter (accessories) to the joint part of
the indoor piping.
Piping connection size of indoor units
Indoor Unit
1.5HP
2HP
2.5–6HP
8HP*
10HP*
N O T E
If using different piping from the standard values, piping reducers will be supplied by the installer.
→ Ø25.4 and Ø22.2 → Ø25.4 indoor pipe adapters are factory supplied with the indoor unit.
• (*1) Ø19.05
• (*2) Change the liquid piping size to Ø12.7 when the piping length is more than 30 m. Indoor unit pipe adapter
is factory supplied with the indoor unit.
77
SMGB0060 rev. 1- 12/2010
Pipe Size
Gas Piping
— —
— —
Ø15.88
Ø15.88
Ø15.88
Ø15.88
Ø25.4
Ø25.4
Gas piping size (mm)
19.05→25.4 (1*)
22.2→ 25.4 (1*)
Multikit & Distributor
Twin
—
—
TE-03N
TE-04N
TE-56N
TE-56N
TE-08N TRE-810N
TE-08N
12.7
15.88
15.88
Triple Quad
— —
— —
— —
— —
— —
TRE-06N —
TE-08N +
TE-04N +
TE-04N
TE-08N +
— TE-56N +
TE-56N
Liquid piping size (mm)
6.35
6.35
9.53
9.53
9.53 (2*)
3