Daikin VRV III RQQ8-48PY1 - Page 154

144
Pipe Sizes Selection
< for individual systems >
Unit outdoor
Indoor unit
Part D
Part E
Part A
< for multi-connecting systems >
Unit outdoor
Indoor unit
Part D
Part E
Part A Part B
Part C
Piping between Unit outdoor ~ Refrigerant Branch Connection (Part A)
• Select from below chart according to system name of the outdoor unit.
• When equivalent piping length between unit outdoor ~ indoor unit is 90m or
longer, sizes of main pipes on the gas and liquid sides (Part A) must be
enlarged.
Piping between Refrigerant Branch Connection ~ Indoor Unit (Part E)
• Match to the size of the connection piping on the indoor unit.
(unit:mm)
Piping between Unit outdoor multi Connection Piping kit (Part B)
• Select from below chart according to individual capacity type of constructing
unit outdoor.
Pipin g betwee n Unit outd oor multi Co nnectio n Pi pin g Kit ~ U nit o utdo or (Part C)
• Select from below chart according to individual capacity type of constructing
unit outdoor.
(unit:mm)
[gas side]
Q8 type : 19.1  22.2
Q10 type : 22.2  25.4
Q12, 14 type : Not lncreased
Q16~22 type : 28.6  31.8
Q24 type : Not lncreased
Q26~34 type : 34.9  38.1
Q36~48 type : Not lncreased
[liquid side]
Q8, 10 type : 9.5  12.7
Q12~16 type : 12.7  15.9
Q18~24 type : 15.9  19.1
Q26~48 type : 19.1  22.2
 If available on the site, use this size.
Otherw ise it can not be increased.
Piping between Refrigerant Branch kits (Part D)
• Select from below chart according to total capacity of indoor units connected
down-stream.
(Note) Sizes of connection pipings must not exceed main pipe sizes
(Part A).
(unit:mm)
1 Existing pipes must meet the condition of design pressure 3.3MPa.
Specifically, to confirm that the (pipe) thickness must not be less than the
required minimum thickness instructed in “6-1 Selection of piping material
and Refrigerant branching kit”
2 Existing pipes must be connected at Part A.
  25.4 applicable in case of 290  x <420, if available on the site.
Calculation Method of Re-charging Amount
of Refrigerant
Re-charging Amount R (kg)
( • Round off at 2 places of decima ls for R.)
NOTE: THE ADDITIONAL REFRIGERA NT CHARGING AMOUNT BEFORE
TESTRUN IS ONLY CORRECTION VALUE BY UNIT OUTDOOR
CA PA CITY.
R =
+
+
+
tot al lengt h (m)
+
of liquid pipe ×0.059
siz e at  9. 5
Correction value by unit outdoor capacity
+
+
Example for refrigerant branches using REFNET joints and REFNET headers
(Example)
When unit outdoor is Q22
type and each piping
length is as right.
R=
+ 23 × 0.12 + 195 × 0.059 + 40 × 0.022 + 2.8 =26.045
a+b
i+r c+d+e+f+g+h+s
j+k Q22 type
kg
tot al lengt h (m)
of liquid pipe ×0.37
siz e at  22. 2
tot al lengt h (m)
of liquid pipe ×0.26
siz e at  19. 1
tot al lengt h (m)
of liquid pipe ×0.18
siz e at  15. 9
tot al lengt h (m)
of liquid pipe ×0.12
siz e at  12. 7
tot al lengt h (m)
of liquid pipe ×0.022
siz e at  6. 4
45 × 0.18
26.0
 Catatan 1
Allowable length after the first refrigeran branch kit to Unit Indoor is 40 m or less, however it can be extended up to 90 m if all the following conditions are satisfied. (In case of “ Branch with REFNET joint ” )
 If available on the site,
use this size.
Otherwise it can not be
increased.
Capacity type of
indoor unit
gas pipe
liquid pipe
standard size
max. size
standard size
max. size
P20 · 25 · 32 · 40 · 50 type
 12.7
 15.9
 6.4
 9.5
P6 3 t ype  1 2. 7 ap pli cabl e
 15.9
 19.1
 9.5
 12.7
P80 type
 15.9
P100 · 125 · 140 type
 25.4
P200 type
 19.1
 28.6
P250 type
 22.2
System name of
unit outdoor
gas pipe
liquid pipe
standa rd s ize
max. size
standa rd s ize
max. size
Q8 type
 19.1
 28.6
 9.5
 15.9
Q10 type
 22.2
Q12 type
 28.6
 34.9
 12.7
Q14 type
Q16 type
Q18~22 type
 15.9
 19.1
Q24 type
 34.9
 41.3
Q26~34 type
 19.1
 22.2
Q36~48 type
 41.3
 54.1
Q8
0kg
Q18
0.7kg
Q28
4.1kg
Q38
4.8kg
Q48
6.0kg
Q10
0.7kg
Q20
2.1kg
Q30
3.7kg
Q40
6.2kg
Q12
2.1kg
Q22
2.8kg
Q32
4.0kg
Q42
4.7kg
Q14
1.7kg
Q24
4.2kg
Q34
2.7kg
Q44
6.1kg
Q16
2.0kg
Q26
2.7kg
Q36
4.1kg
Q46
5.7kg
a : 15.9 × 40 m
e : 9.5 × 35 m
i : 12.7 × 20 m
s : 9.5 × 5 m
b : 15.9 × 5 m
f : 9.5 × 35 m
j : 6.4 × 20 m
c : 9.5 × 35 m
g : 9.5 × 30 m
k : 6.4 × 20 m
d : 9.5 × 35 m
h : 9.5 × 20 m
r : 12.7 × 3 m
Si341213
Contoh sambungan
C
:
3PN12103-4
F
Lampiran
Total capacity of
indoor units
gas pipe
liquid pipe
standard size
max. size
standard size
max. size
< 150
 15.9
 19.1
 9.5
 12.7
150  x < 200
 19.1
 25.4
200  x < 290
 22.2
 28.6
 15.9
290  x < 420
 28.6
 34.9
 12.7
420  x < 640
 19.1
640  x < 920
 34.9
 54.1
 15.9
 22.2
920  x
 41.3
 19.1
Required Conditions
Example Drawings
1. It is necessary to increase the pipe size if the pipe length between the first branch
kit and the final branch kit is over than 40m. (Reducers must be procured on site)
If the increased pipe size is larger than main pipe size, then increase the main pipe
size to the same pipe size.
8 b + c + d + e + f + g + p  90 m
increase the pipe size of b, c, d, e, f, g
Increase the pipe size as follows
 9.5   12.7  15.9   19.1  22.2   25.4  34.9   39.1
 12.7   15.9  9.1   22.2  28.6   31.8
2. For calculation of Total extension length, the actual length of above pipes must be
doubled. (except main pipe and the pipes that are not increased)
a + b × 2 + c × 2 + d × 2 + e × 2 + f × 2 + g × 2
+ h + i + j + k + l + m + n + p  300 m
Unit outdoor REFNET joint (A-G)
a b c d e f
g
H1
A B C D E F G
p
h i j k l m n
1 2 3 4 5 6 7
Indoor units ( 1 - 8 )
8
3. Indoor unit to the nearest branch kit  40 m
h, i, j....... p  40 m
4. The difference between [Unit outdoor to the farthest indoor unit] and [Unit outdoor
to the nearest indoor unit]
 40 m
The farthest indoor unit 8
The nearest indoor unit 1
(a+b+c+d+e+f+g+p)-(a+h)  40 m