Daikin VRV III REMQ72PBYD, Инженерные данные, Страница: 76 / 130

Installation EDUS391004-N
76 Installation of Outdoor Units
6-5 Example of connection
Example of connection (Connection of
8
indoor
u
nits)
O
u
tdoor
u
nit
side
(3 pipes)
Indoor
u
nit
side
(2 pipes)
S
u
ction gas pipe
HP/LP gas pipe Li
qu
id pipe
Gas pipe Li
qu
id pipe
Branch
Selector
Unit
S
u
ction gas pipe
HP/LP gas pipe Li
qu
id pipe
(S
u
ction) gas pipe
Li
qu
id pipe
Piping from o
u
tdoor
u
nit to Branch Selector
Unit Piping from Branch Selector Unit to indoor u
nit or Piping from Refrigerant
b
ranch kit to
indoor
u
nit
u
sed as cooling only
(Bold) : 3 pipes (Thin) : 2 pipes
Branch with REFNET joint
Branch with REFNET joint and header
Branch with REFNET header
Sin
g
le
outdoor
system
REYQ
72
~
120 PBYD REYQ
72
~
144PBTJ
O
u
tdoor
u
nit
O
u
tdoor
u
nit
O
u
tdoor
u
nit
REF
N
ET joint (A
~
G)
REF
N
ET joint (A
~
G)
REF
N
ET header
REF
N
ET header
Maximum allowable
len
g
th
Allowable
hei
g
ht
difference Allowable len
g
th after the branch
Bet
w
een o
u
tdoor
u
nit
and indoor
u
nit
Bet
w
een o
u
tdoor and indoor
u
nits
Bet
w
een indoor and indoor
u
nits
Act
u
al pipe
length E
qu
i
v
alent
length Act
u
al pipe
length Difference in height Difference in height Total extension length
Pipe length
b
et
w
een o
u
tdoor
u
nit and indoor
u
nit
≤
540 ft
Example
8
: a +
b
+ c + d + e
≤
540 ft
Example 6 : a +
b
+
≤
540 ft,
8
: a + m + n + p
≤
540 ft
Example
8
: a + o
≤
540 ft
E
qu
i
v
alent pipe length
b
et
w
een o
u
tdoor
u
nit and indoor
u
nit
≤
620 ft (
N
ote 1)
(Ass
u
me e
qu
i
v
alent pipe length of REF
N
ET joint to
b
e 1.6 ft, that of REF
N
ET header to
b
e 3.3 ft, that of BS
V
Q36 · 60 · 96 to
b
e 13 ft, for calc
u
lation p
u
rposes)
Total piping length from o
u
tdoor
u
nit to all indoor
u
nit
≤
32
8
0 ft
Act
u
al pipe length from first refrigerant
b
ranch kit (either REF
N
ET joint or REF
N
ET header) to indoor
u
nit
≤
130 ft (
N
ote 2)
Example
8
:
b
+ c + d + e + s
≤
130 ft
Difference in height
b
et
w
een o
u
tdoor
u
nit and indoor
u
nit (H1)
≤
164 ft (*3)(
Max 295 ft if the o
u
tside
u
nit is
b
elo
w
(*4)
Difference in height
b
et
w
een adjacent indoor
u
nits (H2)
≤
49 ft
Example 6 :
b
+
≤
130 ft,
8
: m + n + p
≤
130 ft
Example
8
: o
≤
130 ft
a
b
c
d
e
H1
H1
H2
s
r
p
n
f
k
i
q
o
m
g
G
F
j
AB
C
D
E
B1
B2
B3
B4
12
34
567
8
B1
~
B4
: Branch Selector Unit
1
~
6
: Indoor
u
nit (Cool/Heat selection possi
b
le)
7 ,
8
: Indoor
u
nit (Cooling only)
B1
~
B5
: Branch Selector Unit
1
~
4 , 7 ,
8
:
Indoor
u
nit (Cool/Heat selection possi
b
le)
5 , 6
: Indoor
u
nit (Cooling only)
B1
~
B6
: Branch Selector Unit
1
~
6
:
Indoor
u
nit (Cool/Heat selection possi
b
le)
7 ,
8
: Indoor
u
nit (Cooling only)
a
a
m
c d
e
f
g
h
i j
k
o
n
A
B
H2
B1
B2
B3
B4
B5
12
3
4
5
6
7
8
b
c
d
e
m
p
b
g
h
i
j
k
f
o
n
H2
H1
B1
B2
B3
B4
B5
B6
12
3
4
5
6
7
8
(*3) This can
b
e extended to 295 ft
w
ith a replacement o
u
tdoor
u
nit PCB.
(*4) If the difference
b
et
w
een the o
u
tdoor
u
nit and indoor
u
nit is greater than 164 ft, the li
qu
id line m
u
st
b
e increased
b
y one size.
(*1) Indicates the O
u
tside
u
nit m
u
lti-connection piping kit.
(*2) In case of m
u
lti o
u
tdoor system, re-read “o
u
tside
u
nit” to “the first O
u
tside
u
nit m
u
lti connection piping kit” as seen from the indoor
u
nit.