Hitachi CH-UNIT Installation And Operation Manual page 19

REFRIGERANT PIPING
WORK
Piping Connection
¡
Connected
Indoor Unit Capacity
(HP)
0.8 to 1.5
1.6 to 4.0
4.1 to 6.0
T1: In case that a branch is located downstream of the CH unit and also the connected indoor unit capacity is 0.8~1.5HP, perform the flaring work of
the field gas pipe and connect it to the CH unit.
Connected
Indoor Unit Capacity
(HP)
6.1 to 8.0
8.1 to 10.0
Low Pressure Gas Pipe
(Field-Supplied) ( Ø 15.88)
High Pressure Gas Pipe
(Field-Supplied) ( Ø 12.7)
Low Pressure Gas Pipe
(Field-Supplied) ( Ø 15.88)
High Pressure Gas Pipe
(Field-Supplied) ( Ø 12.7)
Reducer
Low Pressure Gas Pipe
(Field-Supplied) ( Ø 19.05)
High Pressure Gas Pipe
(Field-Supplied) ( Ø 15.88)
Low Pressure Gas Pipe
(Field-Supplied) ( Ø 19.05)
High Pressure Gas Pipe
(Field-Supplied) ( Ø 15.88)
Low Pressure Gas Pipe
(Field-Supplied) ( Ø 22.2)
High Pressure Gas Pipe
(Field-Supplied) ( Ø 19.05)
CH-6.0N1
Field Flaring Work
CH Unit
(Upper Surface)
Accessory Pipe
Field Flaring Work
CH Unit
(Upper Surface)
Accessory Pipe
Accessory Pipe
(Cut the end of the spinning part.)
CH Unit
(Upper Surface)
Field Flaring Work
CH-10.0N1
Accessory Pipe
CH Unit
(Upper Surface)
Accessory Pipe
(Cut the end of the expanded part of pipe.)
Reducer
Accessory Pipe
CH Unit
(Upper Surface)
Accessory Pipe
PMML0204 rev.0-05/2010
T1
Gas Pipe
(Field-Supplied)
Accessory Pipe
Field Flaring Work
Gas Pipe
(Field-Supplied)
( Ø 15.88)
Gas Pipe
(Field-Supplied)
( Ø 15.88)
Field Flaring Work
Accessory Pipe
Gas Pipe
(Field-Supplied)
( Ø 19.05)
Accessory Pipe
Gas Pipe
(Field-Supplied)
( Ø 22.2)
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