Hitachi CH-Box Installation Manual page 25

Details of changes to the piping size for connection to the CH-Box are shown below.
CH-AP04MSSX
JCH-AP04MSSX
Piping Connection
Size for CH-Box
Low Pressure ɸ25.4
Gas Pipe (A)
High/Low
ɸ22.2
Pressure
Gas Pipe (B)
ɸ12.7
Liquid Pipe (C)
CH-AP08MSSX
JCH-AP08MSSX
Piping Connection
Size for CH-Box
Low Pressure ɸ28.58
Gas Pipe (A) (1-1/8)
High/Low
ɸ22.2
Pressure
Gas Pipe (B)
ɸ12.7
Liquid Pipe (C)
P5417025-rev.1
Required
Pipe Size
OD25.4
f19.05
(3/4)
ɸ22.2 OD25.4
(7/8)
(1)
ɸ25.4
(1)
ɸ28.58 OD25.4
(1-1/8)
ɸ12.7 OD22.2
(1/2)
OD22.2
f15.88
(5/8)
(7/8)
OD22.2
f19.05
(3/4)
ɸ22.2
(7/8)
OD12.7
f9.52
(3/8)
(1/2)
ɸ12.7
(1/2)
Required
Pipe Size
OD28.58
f19.05
(3/4)
ɸ22.2 OD28.58
(7/8)
ɸ25.4 OD28.58
(1)
ɸ28.58
(1-1/8)
OD28.58
f34.93
(1-3/8)
OD22.2
f15.88
(5/8)
OD22.2
f19.05
(3/4)
ɸ22.2
(7/8) (7/8)
ɸ25.4 OD22.2
(1)
ɸ28.58 OD22.2
(1-1/8)
OD12.7
f9.52
(3/8)
ɸ12.7
(1/2)
(1/2)
OD12.7
f15.88
(5/8)
OD12.7
f19.05
(3/4)
Field-Supplied
ID19.05 Apply Field-Supplied Reducer
→
(1) (3/4) (2 Size Down)
ID22.2
→ Apply Field-Supplied Reducer
(1) (7/8)
-
ID28.58
→ Apply Field-Supplied Reducer
(1) (1-1/8)
ID12.7 Apply Field-Supplied Reducer
→
(7/8) (1/2) (3 Size Down)
ID15.88 Apply Field-Supplied Reducer
→
(7/8) (5/8) (2 Size Down)
ID19.05
→ Apply Field-Supplied Reducer
(7/8) (3/4)
-
ID9.52
→ Apply Field-Supplied Reducer
(1/2) (3/8)
-
Field-Supplied
ID19.05 Apply Field-Supplied Reducer
→
(1-1/8) (3/4) (3 Size Down)
ID22.2 Apply Field-Supplied Reducer
→
(1-1/8) (7/8) (2 Size Down)
ID25.4
→ Apply Field-Supplied Reducer
(1-1/8) (1)
-
ID34.93
→ Apply Field-Supplied Reducer
(1-1/8) (1-3/8)
ID15.88 Apply Field-Supplied Reducer
→
(7/8) (5/8) (2 Size Down)
ID19.05
→ Apply Field-Supplied Reducer
(7/8) (3/4)
-
ID25.4
→ Apply Field-Supplied Reducer
(7/8) (1)
ID28.58 Apply Field-Supplied Reducer
→
(7/8) (1-1/8) (2 Size Up)
ID9.52
→ Apply Field-Supplied Reducer
(1/2) (3/8)
-
ID15.88
→ Apply Field-Supplied Reducer
(1/2) (5/8)
ID19.05 Apply Field-Supplied Reducer
→
(1/2) (3/4) (2 Size Up)
Unit: mm (inch)
Remarks
-
-
-
Unit: mm (inch)
Remarks
-
-
-
15