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

5. Refrigerant Piping Work

5.5.1 Piping Size between Outdoor Units (Base Unit)

< Heat Pump >
•
Standard Type: RAS-080 to 280HNCCLW
•
High Efficiency Type: RAS-080 to 220HNCCLW
< Heat Recovery >
•
Standard Type: RAS-080 to 280RNCCLW
•
Heat Pump
Standard Type: RAS-080 to 280HNCCLW
Model
080HNCCLW
Gas
Piping Size a
Liquid
Model
220HNCCLW
Gas
Piping Size a
Liquid
*1. If Φ25.4 piping is not available, use Φ28.58 piping and a reducer (field-supplied).
*2. If Φ31.75 piping is not available, use Φ34.93 piping and a reducer (field-supplied).
High Efficiency Type: RAS-080 to 220HNCBLW
Model
080HNCBLW
Gas
Piping Size a
Liquid
Model
220HNCBLW
Gas
Piping Size a
Liquid
*1. If Φ25.4 piping is not available, use Φ28.58 piping and a reducer (field-supplied).
•
Heat Recovery
Standard Type: RAS-080 to 280RNCCLW
Model
Low
PressureGas
High / Low
Piping Size a
Pressure Gas
Liquid
Model
Low
PressureGas
High / Low
Piping Size a
Pressure Gas
Liquid
47
To Indoor Units
RAS- RAS-
100HNCCLW 120HNCCLW
19.05 22.2
9.52 9.52
RAS- RAS-
240HNCCLW 260HNCCLW
28.58 28.58
15.88 15.88
RAS- RAS-
100HNCBLW 120HNCBLW
19.05 22.2
9.52 9.52
RAS-
28.58
15.88
RAS- RAS-
080RNCCLW 100RNCCLW
19.05 22.2
15.88 19.05
9.52 9.52
RAS- RAS-
220RNCCLW 240RNCCLW
28.58 28.58
25.4 25.4
15.88 15.88
Outdoor Unit
a
Refrigerant Piping
RAS- RAS-
140HNCCLW 160HNCCLW
*1 *1
25.4 25.4
12.7 12.7
RAS- RAS-
280HNCCLW
*2 *2
31.75 31.75
19.05 19.05
RAS- RAS-
140HNCBLW 160HNCBLW
*1 *1
25.4 25.4
12.7 12.7
RAS- RAS-
120RNCCLW 140RNCCLW
25.4 25.4
22.2 22.2
12.7 12.7
RAS- RAS-
260RNCCLW 280RNCCLW
31.75 31.75
25.4 28.58
19.05 19.05
RAS- RAS-
180HNCCLW 200HNCCLW
28.58 28.58
12.7 15.88
RAS- RAS-
180HNCBLW 200HNCBLW
28.58 28.58
12.7 15.88
RAS- RAS-
160RNCCLW 180RNCCLW
28.58 28.58
22.2 22.2
12.7 15.88
(ɸmm)
RAS-
28.58
15.88
(φmm)
RAS-
28.58
15.88
(ɸmm)
RAS-
200RNCCLW
28.58
22.2
15.88
A16381Z84L-rev.1