CH: CH Unit.
Item
Allowable piping length
Total piping length between CH unit and indoor unit
L a+b+c
CH-6.0N1
within 30 m
CH-10.0N1
within 10 m
Height difference between indoor units connected to the same CH unit
Ha
within 4 m
Height difference between CH units
Hb
within 15 m
¿
Piping connection
Connected indoor unit
capacity (HP)
CH-6.0N1
0.8 to 1.5
*A
3
1
(Ø15.88)
(Ø12.7)
4
4
5
CH Unit
9
2
1.6 to 4.0
3
3
1 (Ø15.88)
2 (Ø12.7)
4
5
(Ø15.88)
CH Unit
9
4.1 to 6.0
3
3
6
4
7
5
(Ø15.88)
1 (Ø19.05)
2 (Ø15.88)
CH Unit
9
*A: In case that a branch is located downstream of the CH unit and also the connected indoor unit capacity is 0.8~1.5 HP,
perform the flaring work of the field gas pipe and connect it to the CH unit.
Connected indoor unit
capacity (HP)
CH-10.0N1
6.1 to 8.0
1 (Ø19.05)
2 (Ø15.88)
4
4
5
CH Unit
9
8
5
(Ø19.05)
6
8.0 to 10.0
1 ( Ø22.2)
2 ( Ø19.05)
4
4
4
CH Unit
9
5
(Ø22.2)
1
Low pressure gas pipe (field-supplied).
2
High pressure gas pipe (field-supplied).
3
Field flaring work.
4
Accessory pipe.
5
Gas pipe (field-supplied).
6
Reducer.
7
(Cut the end of the spinning part).
8
(Cut the end of the expanded part of pipe).
9
(Upper surface).
3 Piping work and
refrigerant charge
69
SMGB0065 rev. 1 - 12/2010
3
