Daikin FXSQ40P7VEB [368/370] 0 8 25 0 2 50 0 59 80 0 22 14 1 14 kg
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Daikin FXSQ40P7VEB [368/370] 0 8 25 0 2 50 0 59 80 0 22 14 1 14 kg

Daikin FXHQ100MVET [368/370] 0 8 25 0 2 50 0 59 80 0 22 14 1 14 kg
Example of Connection (R-410A Type) SiBE311209
359 Appendix
How to calculate the additional refrigerant to
be charged
Additional refrigerant to be charged : R(kg)
(R should be rounded off in units of 0.1 kg.)
Example for refrigerant branch using REFNET joint and REFNET header for the systems and each pipe length as shown below.
System : RTSYQ20PY1
Independent outdoor unit : RTSQ8PY1, RTSQ12PY1
Function unit : BTSQ20PY1
Note 1.
When the equivalent pipe length between outdoor
(*2) and indoor units is 90m or more, the size of
main pipes (figure on right) must be increased
according to the right table.
(*) If available on the site, use this size.
Otherwise, it can not be increased.
Note 2. Allowable length after the first refrigerant branch kit to indoor units is 40m or less, however it can be extended up to 90m if all the following conditions are satisfied.
Required Conditions Example Drawings (In case of “Branch with REFNET joint”)
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 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 c + d + e + f + g + h + q
≤
90 m
increase the pipe size of c, d, e, f, g, h
Increase the pipe size as follows
φ9.5 → φ12.7 φ15.9 → φ19.1 φ22.2 → φ25.4* φ34.9 → φ38.1*
φ12.7 → φ15.9 φ19.1 → φ22.2 φ28.6 → φ31.8*
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 + c × 2 + d × 2 + e × 2 + f × 2 + g × 2
+ h × 2 + i + j + k +
r
+ m + n + p + q
≤
500 m
3.Indoor unit to the nearest branch kit
≤
40 m i, j....... p, q
≤
40 m
4.The difference between
[Outdoor unit to the farthest indoor unit] and [Outdoor unit to the
nearest indoor unit]
≤
40 m
The farthest indoor unit 8
The nearest indoor unit 1
(a + b + c + d + e + f + g + h + q) - (a + b + i)
≤
40 m
*If available on the site, use this size. Otherwise it can not be increased.
R =
Total length(m)
of liquid piping
size at φ22.2
0.37
Total length(m)
of liquid piping
size at φ15.9
0.18
Total length(m)
of liquid piping
size at φ9.5
0.059
Total length(m)
of liquid piping
size at φ19.1
0.26
Total length(m)
of liquid piping
size at φ12.7
0.12
Total length(m)
of liquid piping
size at φ6.4
0.022
FOR THE SYSTEM
SYSTEM NAME
RTSYQ10PY1
RTSYQ14PY1
RTSYQ16PY1
RTSYQ20PY1
THE AMOUNT OF REFRIGERANT
—
1.3kg
2.3kg
—
a : φ15.9 × 10m e : φ6.4 × 10m i : φ6.4 × 10m r : φ12.7 × 5m
b : φ15.9 × 30m f : φ6.4 × 20m j : φ9.5 × 20m s
: φ9.5 × 10m
c : φ12.7 × 20m g : φ6.4 × 20m k : φ9.5 × 10m
d : φ6.4 × 10m h : φ6.4 × 10m
r
: φ9.5 × 10m
R =
40 × 0.18 + 25 × 0.12 + 50 × 0.059 + 80 × 0.022 = 14.91 14.9kg
a, b c, r j, k,r, s d ~ i
Round off in units of 0.1 kg.
System Gas Liquid
RTSYQ10 type
φ
22.2
→
φ
25.4 (*)
φ
9.5
→
φ
12.7
RTSYQ14 type Not Increased
φ
12.7
→
φ
15.9
RTSYQ16 type
φ
28.6
→
φ
31.8 (*)
RTSYQ20 type
φ
15.9
→
φ
19.1
Outdoor unit
Function unit
First refrigerant
branch kit
Indoor
unit
Main pipes
Increase gas and liquid
pipe size both.
In case of single outdoor unit system
Outdoor unit
Function unit
First refrigerant
branch kit
Indoor
unit
Main pipes
Increase gas and liquid
pipe size both.
In case of multi outdoor unit system
Outdoor unit Function unit
a
bc d e f g h
REFNET joint
(A~G)
ijkr mnp
q
GFEDCBA
1234567
8
Indoor units ( 1 - 8 )

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