Daikin VRVIII RXYQ-PR1, Installation Manual

Page: 13 / 32

RXYQ8~18P7W1BR1
VRVIII System air conditioner
4PW44039-1D
Installation manual
8
Pipe siz
e selection
Choose from the f
ollo
wing tab
le in accordance with the outdoor unit total capacity type
, connected do
wnstream
Piping siz
e
(outer diameter x minim
um thic
kness)
Symbol
Gas pipe
Liquid pipe
Betw
een outdoor and first refr
iger
ant br
anch kit
a
RXYQ8
Ø19.1x1.0
Ø9.5x0.8
RXYQ10
Ø22.2x1.0
RXYQ12~16
Ø28.6x1.0
Ø12.7x0.8
RXYQ18
Ø15.9x0.8
Piping betw
een refr
iger
ant br
anch kits
•
Choose from the f
ollo
wing tab
le in accordance with the total capacity of all the indoor units
connected belo
w this
.
•
Do not let the connection piping e
xceed the refr
iger
ant piping siz
e chosen b
y
gener
al system
model name
.
b
Indoor or outdoor unit total capacity
Gas pipe
Liquid pipe
<150
Ø15.9
Ø9.5
150
≤
x<200
Ø19.1
200
≤
x<290
Ø22.2
290
≤
x<420
Ø28.6
Ø12.7
420
≤
x<585
Ø15.9
Betw
een refr
iger
ant br
anch kit and BP unit
•
Pipe siz
e f
or direct connection to BP unit must be based on the total capacity of the connected
indoor units
.
c
,d,e
T
otal capacity of
connected indoor
units
Gas pipe
Liquid pipe
20~62
Ø12.7
Ø6.4
63~149
Ø15.9
Ø9.5
150~208
Ø19.1
Betw
een BP unit and indoor unit
f,g,h,i,j,k,
l,m
Indoor unit capacity
Gas pipe
Liquid pipe
20, 25, 35
Ø9.5
Ø6.4
50
Ø12.7
60
Ø9.5
71
Ø15.9
Ho
w to calculate the ad
ditional refrig
erant to be c
har
g
e
d
Additional refr
iger
ant to be charged R (kg)
R should be rounded off in units of 0.1 kg
Example f
or refrig
erant branc
h using refnet joints f
or RXYQ18P
If the outdoor unit is RXYQ18P and the piping lengths are as belo
w
.
X
1...6
=
T
otal length (m) of liquid piping siz
e at Øa
A
=
W
eight according to tab
le
R
= [10x0.18]+[5x0.12]+[20x0.059]+[48x0.022]
+1
= 5.636 kg
⇒
R = 5.6 kg
a :
Ø15.9x10
m
b :
Ø12.7x5
m
c :
Ø9.5x10
m
e :
Ø9.5x5
m
f :
Ø6.4x4
m
g
: Ø6.4x6 m
h :
Ø6.4x8
m
m:
Ø6.4x8 m
i :
Ø6.4x4
m
j
: Ø6.4x6 m
k :
Ø6.4x8
m
l :
Ø6.4x4
m
d :
Ø9.5x5
m