Piping Size Between Outdoor Units (3 Unit Combination) - Hitachi AIR365 Series Installation And Maintenance Manual

5.5.3 Piping Size between Outdoor Units (3 Unit Combination)

< Heat Pump >
•
Standard Type: RAS-580 to 840HNCCLW
•
High Efficiency Type: RAS-460 to 660HNCBLW
< Heat Recovery >
•
Standard Type: RAS-580 to 840RNCCLW
(Indoor Unit on Left Side)
Outdoor Unit A
c
a
b
Piping Connection Kit 1
To Indoor Units
Standard Type: RAS-580 to 840HNCCLW
Model
Outdoor Unit A
Comb.
Outdoor Unit B
Unit
Outdoor Unit C
Piping Connection Kit
Gas
a
Liquid
Gas
b
Liquid
Piping
Gas
Size
c
Liquid
Gas
d
Liquid
Gas
e
Liquid
Model
Outdoor Unit A
Comb.
Outdoor Unit B
Unit
Outdoor Unit C
Piping Connection Kit
Gas
a
Liquid
Gas
b
Liquid
Piping
Gas
Size
c
Liquid
Gas
d
Liquid
Gas
e
Liquid
NOTE:
•
Perform the installation of the outdoor unit and piping connection according to the figure.
Refer to the table for the outdoor unit model, the piping connection kit model and the piping diameter.
A16381Z84L-rev.1
Outdoor Unit B Outdoor Unit C
d
e
Piping Connection Kit 2
RAS-580HNCCLW RAS-600HNCCLW RAS-620HNCCLW RAS-640HNCCLW RAS-660HNCCLW RAS-680HNCCLW RAS-700HNCCLW
RAS-220HNCCLW RAS-240HNCCLW RAS-220HNCCLW RAS-240HNCCLW RAS-240HNCCLW RAS-240HNCCLW RAS-240HNCCLW
RAS-180HNCCLW RAS-180HNCCLW RAS-220HNCCLW RAS-220HNCCLW RAS-240HNCCLW RAS-220HNCCLW RAS-240HNCCLW
RAS-180HNCCLW RAS-180HNCCLW RAS-180HNCCLW RAS-180HNCCLW RAS-180HNCCLW RAS-220HNCCLW RAS-220HNCCLW
44.45 44.45
(44.45 - 41.28) (44.45 - 41.28)
19.05 19.05
38.1 38.1
(38.1 - 41.28) (38.1 - 41.28)
19.05 19.05
Refer to item 5.5.1 for the piping size for the base units to be combined.
RAS-720HNCCLW RAS-740HNCCLW RAS-760HNCCLW RAS-780HNCCLW RAS-800HNCCLW RAS-820HNCCLW RAS-840HNCCLW
RAS-240HNCCLW RAS-260HNCCLW RAS-260HNCCLW RAS-260HNCCLW RAS-280HNCCLW RAS-280HNCCLW RAS-280HNCCLW
RAS-240HNCCLW RAS-240HNCCLW RAS-260HNCCLW RAS-260HNCCLW RAS-260HNCCLW RAS-280HNCCLW RAS-280HNCCLW
RAS-240HNCCLW RAS-240HNCCLW RAS-240HNCCLW RAS-260HNCCLW RAS-260HNCCLW RAS-260HNCCLW RAS-280HNCCLW
44.45 50.8
(44.45 - 41.28) (50.8 - 54.0)
22.2 22.2
38.1 38.1
(38.1 - 41.28) (38.1 - 41.28)
19.05 19.05
Refer to item 5.5.1 for the piping size for the base units to be combined.
(Indoor Unit on Right Side)
Outdoor Unit C Outdoor Unit B
d
e
Piping Connection Kit 2
MC-NP31TA
44.45 44.45
(44.45 - 41.28) (44.45 - 41.28)
19.05 19.05
38.1 38.1
(38.1 - 41.28) (38.1 - 41.28)
19.05 19.05
MC-NP31TA
50.8 50.8
(50.8 - 54.0) (50.8 - 54.0)
22.2 22.2
38.1 38.1
(38.1 - 41.28) (38.1 - 41.28)
19.05 19.05
5. Refrigerant Piping Work
Outdoor Unit A
c a
b
Piping Connection Kit 1
To Indoor Units
44.45 44.45
(44.45 - 41.28) (44.45 - 41.28)
19.05 22.2
38.1 38.1
(38.1 - 41.28) (38.1 - 41.28)
19.05 19.05
50.8 50.8
(50.8 - 54.0) (50.8 - 54.0)
22.2 22.2
38.1 38.1
(38.1 - 41.28) (38.1 - 41.28)
19.05 19.05
(φmm)
44.45
(44.45 - 41.28)
22.2
38.1
(38.1 - 41.28)
19.05
(φmm)
50.8
(50.8 - 54.0)
22.2
44.45
(44.45 - 41.28)
19.05
50