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Idiomas disponibles
4-2 Tube classification
Tube name
Main tube
Main tube for indoor unit
Branch tube for indoor unit
Manifold assembly for indoor unit
Manifold assembly for outdoor unit Tube assembly for connecting the outdoor tube and main tube
Connecting tube for outdoor unit
W2
(22HP)
g2
4-3 Diameters of main tubes for indoor unit
1) See Tab.4.3 for the diameters of main tubes (L ~L ) for R410A indoor
unit.
2) E.g.: The capacity of downstream indoor units after L in Fig.4.2 is
140×4+28+71=659, so the gas tube and liquid tube of L are respectively:
Ф28.6 and Ф15.9.
Tab.4.3 Diameters of main tubes for R410A indoor unit
Tube diameter of indoor unit(
Capacity of downstream
(
)
units
×
100W
Gas tube
A<168
168≤A 224
<
224≤A 330
<
<
330≤A 470
470≤A 710
<
710≤A 1040
<
40≤A
<1
540
10
1540≤A 1800
<
1800≤A<2450
<
2450≤A 2690
2690≤A
4-4 Diameters of branch tubes for indoor unit
Tab.4.4 L
If the branch tube length≤10m
Capacity of indoor
units A(×100W)
Gas side(mm) Liquid side(mm)
≤
.
A
28
Ф9
5
<
≤
.
28
A
56
Ф12
7
.
<
≤
Ф15
56
A
160
9
4-5 Diameters of main tubes for outdoor unit
Diameters of main tubes for R410A outdoor unit
Tab.4.5
When the equivalent length of all tubes < 90m
Capacity of
outdoor units(HP)
Gas side mm
8
Ф
19 1
10
Ф22.2
12~14
Ф25.4
16
Ф28.6
18 24
~
Ф
28 6
Tab.4.2 Tube classification
Connecting position
Tube from the outdoor unit to the first indoor branch
Tube after the first indoor manifold and indirectly connected to the indoor unit
Tube after the manifold and directly connected to the indoor unit
Tube assembly for connecting the maintube, main branch tube and branch tube
Tube connecting the outdoor unit to the outdoor manifold
W1
(24HP)
L2
g1
L
A
L1
L7
Fig.4.2 Tube classification
2
9
2
2
mm
)
Applicable manifold
Liquid tube
Ф15.9
Ф9.5
EVRI-BP1
Ф19.1
Ф9.5
Ф22.2
Ф9.5
EVRI-BP2
Ф28.6
Ф12.7
Ф28.6
Ф15.9
EVRI-BP3
Ф31.8
Ф19.1
Ф38.1
Ф19.1
EVRI-BP4
Ф41.2
Ф19.1
EVRI-BP5
Ф44.5
Ф22.2
Ф54
Ф25.4
EVRI-BP6
EVRI-BP7
Ф54
Ф
28 6
.
ength of branch tubes
If the branch tube length>10m
(
)
Gas side mm
.
.
Ф6
35
Ф12
7
.
.
Ф6
35
Ф15
9
.
.
Ф9
Ф19
5
1
(
) Liquid side mm)
(
Indoor 1st manifold
.
Ф9.5
Ф .
9 5
EVRI-BP2
Ф12.7
Ф12.7
.
Ф15.9
EVRI-BP3
C
B
L6
E
d
N7
(140)
L8
H
G
L9
L11
L12
M
K
N11
(140)
26 34
~
36 54
~
56 66
~
68~82
84~96
Tab.4.6
Capacity of
outdoor units(HP)
8
10
12~14
16
18 24
~
26 34
~
36 54
~
56 66
~
68~82
84~96
Please select the main tube as per the table above. If indoor units are
excessively equipped and the main manifold for indoor units is larger than
the main tube, the main tube shall be selected as per the diameter of the
main manifold, i.e. select the larger one.
E.g.: When three outdoor units (24+22) are parallel connected (total
capacity 46HP), and the capacity of all indoor units connected is 1290, if
Liquid side(mm)
the equivalent length of all tubes is less than 90m, refer to Tab.4.5: the
.
Ф9
5
main tube for a total outdoor capacity 46HP is Ф41.2/Ф22.2; but refer to
.
Ф9
5
Tab.4.3, the main manifold for a total indoor capacity 1290 is Ф38.1/ Ф
.
Ф12
7
19.1, so according to the principle for selecting the larger one, the main
tube is finally fixed in Ф41.2/Ф22.2.
4-6 Diameters of own interface on the outdoor unit
(1)
Type
8HP/10HP/12HP
14HP/
16HP/18HP/20HP/
26HP/28HP/30HP/32HP
9
Code (Fig.4.2)
L 1
L ~L12
2
a,b,c,d,e,f,g,h,i,j k l m
A,B,C,D,E,F,G,H,I,J,K,M
L
g ,g
1 2
N2
(140)
N1
b
(140)
a
D
L4
F
e
N5
N4
(140)
(140)
N8
(140)
h
i
I
J
L10
j
m
l
N13
N12
(56)
(56)
Continue Tab.4.5
Ф31.8
Ф31.8
Ф41.2
Ф44.5
Ф50.8
Diameters of main tubes for R410A outdoor unit
The equivalent length of all tubes
Gas side mm
(
) Liquid side mm)
Ф22.2
Ф25.4
Ф28.6
Ф31.8
Ф31.8
Ф38.1
Ф41.2
Ф44.5
Ф54.0
Ф54.0
Tab.4.7 Diameter of interface on outdoor unit
Tube side
Gas side
Ф22.2
Ф28.6
22HP/24
HP
Ф35
, , ,
c
N3
(71)
f
N6
(28)
N9
(71)
N10
(28)
EVRI-BP4
Ф19.1
Ф19.1
EVRI-BP3
Ф19.1
EVRI-BP5
Ф22.2
Ф25.4
(2)
90m
≥
(
Indoor 1st manifold
Ф12.7
EVRI-BP2
Ф12.7
Ф15.9
Ф
15 9
.
EVRI-BP3
Ф19.1
Ф22.2
EVRI-BP4
Ф22.2
Ф22.2
EVRI-BP5
Ф25.4
EVRI-BP6
Ф28.6
EVRI-BP7
Liquid side
Ф12.7
Ф15.9
Ф22.2
V.2
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