Daikin VRV III REMQ72PBYD, Инженерные данные, Страница: 56 / 130

EDUS391004-N Installation
Installation of Outdoor Units 55
Re
qu
ired Conditions
Example Dr
a
w
ings
1.
It is necessar
y to increase the pipe siz
e if the pipe length
b
et
w
een
the first
b
ranch kit and the final
b
ranch kit is o
v
er than 130 ft.
(Red
u
cers m
u
st
b
e proc
u
red on site)
If the increased pipe siz
e is larger than main pipe siz
e
, then
increase the main pipe siz
e to the same pipe siz
e
.
2. For calc
u
lation of Total extension length, the act
u
al length of
a
b
o
v
e pipes m
u
st
b
e do
ub
led.
(except main pipe and the pipes that are not increased)
3.
Indoor
u
nit to the nearest
b
ranch kit
≤
130 ft.
4.
The
diff
erence
b
et
w
een
[O
u
tdoor
u
nit to the f
a
rthest indoor
u
nit]
and [O
u
tdoor
u
nit to the nearest indoor
u
nit]
≤
130 ft.
8
b
+c+d+e+f+g+p
≤
295 ft.
increase the pipe siz
e of
b
, c
, d, e
, f
, g
a+
b
×2+c×2+d×2+e×2+f×2+g×2
+h+i+j+k+ +m+n+p
≤
32
8
0 ft.
h, i, j.......
p
≤
130 ft.
The f
a
rthest indoor
u
nit
8
The nearest indoor
u
nit 1
(a+
b
+c+d+e+f+g+p)-(a+h)
≤
130 ft.
Increase the pipe siz
e as f
ollo
w
s
φ
3/
8
φ
1/2
φ
1/2
φ
5/
8
φ
5/
8
φ
3/4
φ
3/4
φ
7/
8
φ
7/
8
φ
1*
φ
1-1/
8
φ
1-1/4*
φ
1-3/
8
φ
1-1/2*
a
AB
C
D
E
F
G
b
cd
ef
g
hi
j
k
m
n
12
34
56
7
8
H1
p
O
u
tdoor
u
nit
REF
N
ET joint (A-G)
Indoor
u
nits ( 1 -
8
)
*If a
v
aila
b
le on the site
,
u
se this siz
e
. Other
w
ise it can not
b
e increased.
How to calculate the additional refri
g
erant
to be char
g
ed
Additional refrigerant to b
e charged : R(l
b
)
R sho
u
ld
b
e ro
u
nded
off in
u
nits of 0.1 l
b
.
R =
(Total length (ft) of li
qu
id piping
size at
φ
7/
8
)
(Total length (ft) of li
qu
id piping
size at
φ
5/
8
)
(Total length (ft) of li
qu
id piping
size at
φ
3/
8
)
(Total length (ft) of li
qu
id piping
size at
φ
3/4)
(Total length (ft) of li
qu
id piping
size at
φ
1/2)
(Total length (ft) of li
qu
id piping
size at
φ
1/4)
0.249
0.121 0.040
0.175
0.0
8
1
0.015
HEAT PUMP SYSTEM
MODEL
N
AME
MODEL
N
AME
THE AMOU
N
T OF
REFRIGERA
N
T
RXYQ96, 120, 216, 240, 336, 360P RXYQ72, 16
8
, 192,
264, 2
88
, 312P
RXYQ144PBYD RXYQ144PBTJ
0.0 l
b
1.1 l
b
2.2 l
b
7.9 l
b
REFRIGERA
N
T AMOU
N
T FOR EXCEEDI
N
GCO
NN
ECTIO
N
CAPACITY OF I
N
DOOR U
N
IT
I
N
DOOR
CO
NN
ECTIO
N
CAPACITY MORE THA
N
100
%
120
%
OR LESS
MORE THA
N
120
%
130
%
OR LESS
RXYQ72
~
312PBYD
RXYQ72
~
312PBTJ
1.1 l
b
RXYQ336 · 360PBYD
RXYQ336 · 360PBTJ
2.2 l
b
Example for refrigerant
b
ranch
u
sing REF
N
ET joint and REF
N
ET header for systems and each pipe length as sho
w
n
b
elo
w
.
O
u
tdoor system : RXYQ240PBYD
Total capacity of indoor
u
nit : 116
%
a :
φ
3/4 × 15ft.
b
:
φ
3/4 × 10ft.
c :
φ
3/
8
× 5ft.
e :
φ
3/
8
× 5ft.
f :
φ
3/
8
× 5ft.
g :
φ
3/
8
× 5ft.
i :
φ
3/
8
× 5ft.
j :
φ
3/
8
× 5ft.
k :
φ
3/
8
× 10ft.
m :
φ
3/
8
× 10ft.
n :
φ
3/
8
× 5ft.
o :
φ
1/4 × 5ft.
r :
φ
1/2 × 1ft.
s :
φ
3/
8
× 1ft.
t :
φ
3/
8
× 1ft.
N
ote 1.
W
hen the e
qu
i
v
alent pipe length
b
et
w
een o
u
tdoor and indoor
u
nits is 295 ft or more,
the size of main pipes (
b
oth gas side and li
qu
id side (refer to fig
u
re 16)
m
u
st
b
e increased according to the right ta
b
le.
(Refer to fig
u
re 16)
1.O
u
tdoor
u
nit
2.Main pipes 3.Increase 4.First refrigerant
b
ranch kit
5.Indoor
u
nit
N
ote 2.
Allo
w
a
b
le length after the first refrigerant
b
ranch kit to indoor
u
nits is 130 ft or less, ho
w
e
v
er it can
b
e extended
u
p to 295 ft if all the follo
w
ing conditions are satisfied. (In case of “Branch
w
ith REF
N
ET joint”)
System
RXYQ72P type RXYQ96P type
RXYQ120P type RXYQ144P type RXYQ16
8
P type
RXYQ192P type RXYQ216P type RXYQ240P type
Gas pipe
φ
3/4
φ
7/
8
N
ot Increased
N
ot Increased
N
ot Increased
N
ot Increased
N
ot Increased
N
ot Increased
N
ot Increased
Li
qu
id pipe
φ
3/
8
φ
1/2
φ
3/
8
φ
1/2
φ
1/2
φ
5/
8
φ
1/2
φ
5/
8
φ
5/
8
φ
3/4
φ
5/
8
φ
3/4
φ
5/
8
φ
3/4
φ
5/
8
φ
3/4
System
RXYQ264P RXYQ2
88
P
RXYQ312P RXYQ336P RXYQ360P
Gas pipe
N
ot Increased
N
ot Increased
N
ot Increased
N
ot Increased
N
ot Increased
Li
qu
id pipe
φ
3/4
φ
7/
8
φ
3/4
φ
7/
8
φ
3/4
φ
7/
8
φ
3/4
φ
7/
8
φ
3/4
φ
7/
8
R
=
(
25 × 0.175 + 1 × 0.121 + 1 × 0.0
8
1 + 75 × 0.040 + 10 × 0.015 ) + 1.1
a,
bu
rc
~
n, s, t
o, p
116
%
= 12.127
12.1 l
b
Ro
u
nd off in
u
nits of 0.1 l
b
.
1.1 l
b
C: 3P215731-10R
*If
the
i
n
creased
p
ipe size is larg
er
tha
n
the
mai
n
pipe
size
, in
cre
a
se th
e ma
in pip
e
si
ze to the same as th
e increase
d
si
ze.
If
the
spe
c
ified pi
pe dia
m
e
te
r is not avail
abl
e ons
ite,
d
o
NOT su
bstitu
te
a
p
ipe of greater dia
m
e
te
r.