Hitachi FSXN Series Service Manual page 58

3 Piping work and
refrigerant charge
Combination of base units
RAS-38
Model
FSXN
RAS-14
Unit A
FSXN
RAS-12
Unit B
FSXN
RAS-12
Unit C
FSXN
Connection kit
Gas (low pressure) ø38.1
a Gas (high pressure) ø31.75
Liquid ø19.05
Gas (low pressure) ø28.6
b Gas (high pressure) ø25.4
Liquid ø15.88
Gas (low pressure) ø25.4
c Gas (high pressure) ø22.2
Liquid ø12.7
Gas (low pressure) ø25.4
d Gas (high pressure) ø22.2
Liquid ø12.7
Gas (low pressure) ø25.4
e Gas (high pressure) ø22.2
Liquid ø12.7
If the main refrigerant pipe specified in the table is not available at the installation location, select the size given in brackets.
In this case, prepare a suitable reducer.
Main pipe
ø9.53
ø12.7
ø15.88
ø19.05
ø22.2
51
SMGB0065 rev. 1 - 12/2010
RAS-40 RAS-42 RAS-44
FSXN FSXN FSXN
RAS-16 RAS-18 RAS-18
FSXN FSXN FSXN
RAS-12 RAS-12 RAS-14
FSXN FSXN FSXN
RAS-12 RAS-12 RAS-12
FSXN FSXN FSXN
ø38.1 ø38.1 ø38.1
ø31.75 ø31.75 ø31.75
ø19.05 ø19.05 ø19.05
ø28.6 ø28.6 ø31.75
ø25.4 ø25.4 ø28.6
ø15.88 ø15.88 ø19.05
ø28.6 ø28.6 ø28.6
ø22.2 ø22.2 ø22.2
ø12.7 ø15.88 ø15.88
ø25.4 ø25.4 ø25.4
ø22.2 ø22.2 ø22.2
ø12.7 ø12.7 ø12.7
ø25.4 ø25.4 ø25.4
ø22.2 ø22.2 ø22.2
ø12.7 ø12.7 ø12.7
Alternative pipe and reducer
(ø9.53-ø12.7)
(ø12.7-ø15.88)
(ø15.88-ø19.05)
(ø19.05-ø22.2)
(ø22.2-ø25.4)
RAS-46 RAS-48 RAS-50
FSXN FSXN FSXN
RAS-18 RAS-18 RAS-18
FSXN FSXN FSXN
RAS-16 RAS-18 RAS-18
FSXN FSXN FSXN
RAS-12 RAS-12 RAS-14
FSXN FSXN FSXN
MC-30XN
ø38.1 ø38.1 ø38.1
ø31.75 ø31.75 ø31.75
ø19.05 ø19.05 ø19.05
ø31.75 ø31.75 ø31.75
ø28.6 ø28.6 ø28.6
ø19.05 ø19.05 ø19.05
ø28.6 ø28.6 ø28.6
ø22.2 ø22.2 ø22.2
ø15.88 ø15.88 ø15.88
ø28.6 ø28.6 ø28.6
ø22.2 ø22.2 ø22.2
ø12.7 ø15.88 ø15.88
ø25.4 ø25.4 ø25.4
ø22.2 ø22.2 ø22.2
ø12.7 ø12.7 ø12.7
Main pipe Alternative pipe and reducer
ø25.4
ø28.6
ø31.75
ø38.1
–
RAS-52 RAS-54
FSXN FSXN
RAS-18 RAS-18
FSXN FSXN
RAS-18 RAS-18
FSXN FSXN
RAS-16 RAS-18
FSXN FSXN
ø38.1 ø38.1
ø31.75 ø31.75
ø19.05 ø19.05
3
ø31.75 ø31.75
ø28.6 ø28.6
ø19.05 ø19.05
ø28.6 ø28.6
ø22.2 ø22.2
ø15.88 ø15.88
ø28.6 ø28.6
ø22.2 ø22.2
ø15.88 ø15.88
ø28.6 ø28.6
ø22.2 ø22.2
ø12.7 ø15.88
(ø25.4-ø28.6)
(ø28.6-ø31.75)
(ø31.75-ø34.9)
(ø38.1-ø41.3)
–