Daikin RXYQ5M9W1B [14/28] Model amount of refrigerant

Daikin RXYQ5M9W1B [14/28] Model amount of refrigerant
Installation manual
9
RXQ5~10 + RXYQ5~48M9W1B
VRVII System air conditioner
4PW21816-1A
Pipe size selection
For an outdoor unit multi installation (RXYQ18~48M9W1B),
make the settings in accordance with the following figure.
A. Piping between outdoor unit and refrigerant branch kit
Match to the size of the connection piping on the outdoor unit.
Outdoor unit connection piping size
Piping between refrigerant branch kits
Choose from the following table in accordance with the total capacity of
all the indoor units connected below this.
Do not let the connection piping exceed the refrigerant piping size
chosen by general system model name.
B. Piping between outdoor branches
Choose from the following table in accordance with the total capacity of
all the oudoor units connected above this.
Piping between refrigerant branch kit and indoor unit
Pipe size for direct connection to indoor unit must be the same as the
connection size of indoor unit.
C. Piping between outdoor branch and outdoor unit
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 RXYQ34M9W1B
If the outdoor unit is RXYQ34M9W1B and the piping lengths are as below
R = [30x0.25]+[10x0.17]+[10x0.11]+[40x0.054]+[49x0.022]+0 = 13.538 R = 13.5 kg
A
B
C
C
Outdoor unit
capacity type
Piping size (outer diameter)
Gas pipe Liquid pipe
RXYQ5 Ø15.9
Ø9.5
RXYQ8 Ø19.1
RXYQ10 Ø22.2
RXYQ12~16
Ø28.6
Ø12.7
RXYQ18~22
Ø15.9
RXYQ24
Ø34.9
RXYQ26~34
Ø19.1
RXYQ36~48 Ø41.3
Indoor capacity
index
Piping size (outer diameter)
Gas pipe Liquid pipe
<200 Ø15.9
Ø9.5
200x<290 Ø22.2
290x<420
Ø28.6
Ø12.7
420x<640 Ø15.9
640x<920 Ø34.9
Ø19.1
>920 Ø41.3
Outdoor
capacity index
Piping size (outer diameter)
Gas pipe Liquid pipe
<22 HP Ø28.6
Ø15.9
24 HP
Ø34.9
>26 HP Ø19.1
Indoor capacity
type
Piping size (outer diameter)
Gas pipe Liquid pipe
20~50 Ø12.7 Ø6.4
63~125 Ø15.9
Ø9.5200 Ø19.1
250 Ø22.2
Outdoor
capacity type
Piping size (outer diameter)
Gas pipe Liquid pipe
RX(Y)Q8 Ø19.1
Ø9.5
RX(Y)Q10 Ø22.2
RXYQ12~16 Ø28.6 Ø12.7
NOTE If a negative result is gotten for R from
the formula at right, no refrigerant
needs to be added nor removed.
R=
(
Total length (m) of liquid
piping size at Ø22.2
)
x0.35+
(
Total length (m) of liquid
piping size at Ø19.1
)
x0.25+
(
Total length (m) of liquid
piping size at Ø15.9
)
x0.17+
(
Total length (m) of liquid
piping size at Ø12.7
)
x0.11
+
(
Total length (m) of liquid
piping size at Ø9.5
)
x0.054+
(
Total length (m) of liquid
piping size at Ø6.4
)
x0.022+
Model Amount of refrigerant
RXYQ8~32 1 kg
RXYQ5, 34~48 0 kg
a: Ø19.1x30 m d: Ø9.5x10 m g: Ø6.4x10 m j: Ø6.4x10 m
b: Ø15.9x10 m e: Ø9.5x10 m h: Ø6.4x20 m k: Ø6.4x9 m
c: Ø9.5x10 m f: Ø9.5x10 m i: Ø12.7x10 m

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