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Multi V 5
7. Refrigerant piping system
Pattern 7
A
1
48k
Pattern 8
A
1
48k
•
Keep the 40m(131ft) distance from the first branch to the farthest indoor.
Note
•
If the large capacity(76kBtu/h and 96kBtu/h grade) indoor units are installed, two neighboring outlets of one HR
unit are linked by Y branch pipe and connected to one indoor unit.
18
HR2
HR1
3
54k
2
48k
HR2
HR1
B
2
3
4
5
48k
12k
12k
12k
n I
d
o
r o
U
t i n
1
Low pressure Gas pipe
Outdoor
High pressure Gas pipe
Unit
Liquid pipe
• Pipe installation from outdoor units to HR units
: 3 pipes(Low pressure Gas pipe, High pressure Gas pipe, Liquid pipe)
• Pipe installation from HR units to indoor units
: 2 pipes(Gas pipe, Liquid pipe)
1) under 40m(131ft)
Indoor
Y branch
Unit
Keep the sum of indoor capacity under 67.4kW(230 kBtu/h).
1) under 40m(131ft)
Indoor
Indoor
Indoor
Unit
Unit
Unit
Keep the sum of indoor capacity under 67.4kW(230 kBtu/h).
*
* : Serial connection of HR units :
HR3
Capacity sum of indoor units ≤ 230
kBtu/h
4
5
6
54k
54k
54k
* : Maximum indoor units per a branch are
8 indoor units
A
6
7
8
12k
24k
24k
Y
r B
n a
h c
p
p i
e
A
Gas pipe
Liquid pipe
Indoor
Indoor
Indoor
Unit
Unit
Unit
Indoor
Indoor
Indoor
Indoor
Unit
Unit
Unit
Unit
Installation of Outdoor Units
Head Branch pipe
B
Indoor
Unit
Indoor
Unit
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