Daikin VRV III RXYQ-PY1K, Installation Manual, Page: 11 / 34

RXYQ8~1 RXYQ8~12P7YLK
VRVIII System air conditioner
4PW41760-1
Installation manual
8
6.6. Example of connection
Example of connection (Connection of 8 indoor units Heat pump system)
Branc
h with refnet joint
Branc
h with refnet joint and refnet header
Branc
h with refnet header
One outdoor unit installed (RXYQ8~12) Outdoor units installed in a m
ultiple outdoor
unit system (RXYQ16~36)
Install the joint par
t (
par
t in the figure) of the outdoor unit m
ulti connection piping kit
hor
iz
ontally with attention to the installation restr
ictions descr
ibed in "connecting the
refr
iger
ant piping".
(*) If the system capacity is RXYQ16 or more
, re-read to the first outdoor br
anch as
seen from the indoor unit. Maxim
um allo
wab
le length
Betw
een outdoor and indoor units
Actual pipe length
Pipe length betw
een outdoor(*) and indoor units
≤
165 m
[Example] unit 8:
a+b+c+d+e+f+g+p
≤
165 m
[Example] unit 6:
a+b+h
≤
165 m, unit 8:
a+i+k
≤
165 m
[Example] unit 8:
a+i
≤
165 m
Equiv
alent length
Equiv
alent pipe length betw
een outdoor(*) and indoor units
≤
190 m (Assume equiv
alent pipe length of refnet joint to be 0.5
m and of the refnet header to be 1.0
m.
(f
or
calculation pur
poses))
T
otal e
xtension
length
T
otal piping length from outdoor unit* to all indoor units
≤
1000 m
Betw
een outdoor br
anch and outdoor unit (Only f
or
RXYQ16 or more)
Actual pipe length
Piping length from outdoor br
anch to outdoor unit
≤
10 m.
Appro
ximate length:
max.
13 m
Allo
wab
le height
Betw
een outdoor and indoor units
Diff
erence in
height
Diff
erence in height betw
een outdoor and indoor units (H1)
≤
50 m (
≤
40 m if outdoor unit is located in a lo
w
er
position).
Betw
een indoor and indoor units
Diff
erence in
height
Diff
erence in height betw
een adjacent indoor units (H2)
≤
15 m
Betw
een outdoor and outdoor units
Diff
erence in
height
Diff
erence in height betw
een outdoor unit (main) and outdoor unit (sub) (H3)
≤
5 m
Allo
wab
le length after the branc
h
Actual pipe length
Pipe length from first refr
iger
ant br
anch kit (either refnet joint or refnet header) to indoor unit
≤
40 m (See note 1 on ne
xt page)
[Example] unit 8:
b+c+d+e+f+g+p
≤
40 m
[Example] unit 6:
b+h
≤
40 m, unit 8:
i+k
≤
40 m
[Example] unit 8:
i
≤
40 m
Refrig
erant branc
h kit selection
Refr
iger
ant br
anch kits can only be used with R410A.
Ho
w to select the refnet joint
•W
hen using refnet joints at the fi
rst br
anch counted from the outdoor unit side.
Choose from the f
ollo
wing tab
le in accordance with the capacity of the outdoor unit.
•F
or refnet joints other than the fi
rst br
anch, select the proper branch kit model based on
the total capacity inde
x.
Ho
w to select the refnet header
•
Choose from the f
ollo
wing tab
le in accordance with the total capacity of all the indoor
units connected belo
w the refnet header
.
•
Note:
250 type cannot be connected below the refnet header
.
Ho
w to c
hoose an outdoor m
ulti connection piping kit (needed if the outdoor
unit capacity type is RXYQ16 or more
.)
•
Choose from the f
ollo
wing tab
le in accordance with the number of outdoor units
.
Example of do
wnstream indoor units
[Example] in case of refnet joint C;
indoor units 3+4+5+6+7+8
[Example] in case of refnet joint B;
indoor units 7+8,
in case of refnet header
; indoor units 1+2+3+4+5+6
[Example] in case of refnet header
;
indoor units 1+2+3+4+5+6+7+8
•
Use the outdoor unit multi connection piping kit that is sold separately as an option (BHFQ1517) f
or the m
ulti installation of outdoor units
. Selection method is
as sho
wn in the r
ight tab
le
.
•
Do not use the outdoor unit multi connection piping kit (BHF1359) that are sold separ
ately as an option of the M-type ser
ies and do not use
T
-joints
.
indoor unit refnet joint refnet header outdoor m
ulti connection piping kit
ab
c
d
e
f
g
H1 p
AB
C
D
E
F
G
12
3
4
5
6
7
8
H2
hi
j
k
l
m
n
H1
H2
a
i
b
cd
e
f
g
h
k
j
78
A
B
12
3
4
5
6
a
H1
H2
cd
e
f
g
h
i
b
12
3
4
5
6
7
8
AB
C
D
EF
G
ab
c
d
e
f
g
8
H2
H1
H3
p
hi
j
k
l
m
n
12
3
4
5
6
7
H1
H2
a
i
b
c
12
3
4
5
6
k
j
78
H3
A
B
de
f
gh
H1
H3
a
H2
cd
e
f
g
h
i
b
12
3
4
5
6
7
8
rs
t
r
≤
10 m (Appro
ximate length:
max.
13 m)
s
≤
10 m (Appro
ximate length:
max:
13 m)
t
≤
10 m (Appro
ximate length:
max:
13 m)
Outdoor unit capacity type
Refrig
erant branc
h kit name
RXYQ8
KHRQ22M20T
RXYQ8+10
KHRQ22M29T9
RXYQ16~22
KHRQ22M64T
RXYQ24~36
KHRQ22M75T
Indoor capacity type
Refrig
erant branc
h kit name
<200
KHRQ22M20T
200
≤
x<290
KHRQ22M29T9
290
≤
x<640
KHRQ22M64T
≥
640
KHRQ22M75T
Indoor capacity type
Refrig
erant branc
h kit name
<290
KHRQ22M29H (Max.
8 br
anch)
290
≤
x<640
KHRQ22M64H (Max.
8 br
anch)
(a)
≥
640
KHRQ22M75H (Max.
8 br
anch)
(a)
See note 2 on ne
xt page
Number of outdoor units
Branc
h kit name
2
BHFQ22P1007
3
BHFQ22P1517