EAS Electric VRV EVR 6 Series, Инструкция по эксплуатации, Страница: 43 / 53

Select branch joint
Select the branch joint according to the total designed capacity
of indoor units which it connects to. If this capacity is more than
that of the outdoor unit, then select the connection according to
the outdoor unit.
The selection of branch header depends on the quantity of
branches it connects to.
NOTE
Connection method
Flaring
Welding or Flaring
Flaring
Flaring Flaring
Flaring
12kW
Branch pipe
Indoor unit
14kW
16kW
Gas side Liquid side
Table 4-5
Piping sizes at the branch pipe
Flaring
Flaring
8kW
10kW
Flaring
Welding or Flaring
Welding or Flaring
Welding or Flaring
Welding or Flaring
Welding or Flaring
12.7(Flaring nut)
A≤45
R410A
A≥56
6.4(Flaring nut)
15.9(Flaring nut) 9.5(Flaring nut)
Gas Side (Φ) Liquid Side (Φ)
Table 4-6
Indoor Unit Capacity
A(x100W)
Refrigerant
Table 4-2
Select refrigerant pipe
Pipe definition Pipe connect position
The pipe between outdoor unit to the
first branch of indoor unit.
The main pipes of
indoor unit
Code
Indoor unit branch
pipes components
L2～L5
L1
a,b,c,
d,e,f
A,B,C,
D,E
The first connect methond
a
b
c
e
f
d
L
1
L
2
L
3
L
4
L
5
A
B
C
D
E
NOTE
4.4 Confirmation for the diameters of indoor
unit connecting pipes
A＜160
160≤A＜230
Total capactiy of
the downstream
inner units
Main pipe size
（
mm
）
Iiquid pipe
Φ15.9
Φ9.5
Φ9.5
Branch Pipe
EVRI-BP1
EVRI-BP1
Φ19.1
R410A Indoor unit connecting pipes diameters
1) R410A Indoor unit connecting pipes diameters 4-3
。
2) Example 1
：
In the Fig.4-5,The downstream inner units of the
L2,and its total capacity is 28×2
＝
56
，
refers to the Table 4.4,the
air/liquid side of L2 is
：
Φ15.9/Φ9.5
。
N
1
(28)
N
3
(28)
N
5
(28)
N
6
(22)
N
2
(28)
N
4
(28)
A
B
D
E
C
a
b
c
e
f
d
L
1
L
2
L
5
L
3
L
4
The straight distance between copper pipe turning and the co
ntiguous branch pipe is at least 0.5 m.
The straight distance between the contiguous branch pipes is at
least 0.5 m.
The straight distance which the branch pipes connected to the
IDU is at least 0.5 m.
air side
(mm)
liquid si-
de
(mm)
A＜155
155≤A＜230
Φ15.9 Φ9.5
Φ19.1 Φ9.5
EVRI-BP1
EVRI-BP1
EVRI-BP1
EVRI-BP2
Φ19.1 Φ9.5
Φ22.2 Φ9.5
Main pipe size when the tot-
al equivalent piping length
of air side is <90m
4.4 Connecting method
Main pipe
The branch pipes
of indoor unit
The pipe after the first branch do not
drect connect with the indoor unit.
The pipe after the branch connect with
the indoor unit.
The pipes connect with the main pipe
、
the branch pipe and the the main pipe
of indoor unit.
The First Line Branch Pipe
Outdoor Unit
The First Line Branch Pipe
Outdoor Unit(Take Model 160 for example)
The second connect methond
Intdoor Units
Fig. 4-4
Fig. 4-5
Use the special-purpose branch branches provided by EAS
Electric Smart Technology only. Failing to do so may lead to
If the distance from the first branch pipe to the last IDU exceeds
15 m, use connection method 2.
The connection distance between the IDU and branch pipe
should not exceed 15 m.
Table 4-3
Air pipe
R410A outdoor unit connecting pipes diameters
Total capa-
ctiy of The
outdoor
units
Table 4-4
Main pipe size when the tot-
al equivalent piping length
of air side is ≥90m
air side
(mm)
liquid si-
de
(mm)
The first Line
Branch Pipe
The first Line
Branch Pipe
4.5 Confirmation for the diameters of outdoor
unit connecting pipes
severe system malfunction.
15 V.1