Installation manual
7
RXYQ8~18P7W1BR1
VRVIII System air conditioner
4PW44039-1D
6.6.
Example of connection
Example of connection
(Connection of 8 units heat pump system)
Branc
h with refnet joint
Maxim
um allo
wab
le
length
Betw
een outdoor and BP units
T
otal pipe length
Pipe length betw
een outdoor and BP units
≤
55 m
[Example] BP unit 3:
a+b+c+d+e
≤
55 m
Betw
een BP and indoor units
T
otal pipe length
Piping length betw
een BP and indoor units:
≤
80 m
[Example] RXYQ18P:
f+g+h+i+j+k+l+m
≤
80 m
Betw
een BP and an indoor unit
1 room length
Pipe length betw
een BP and an indoor unit:
m
ust be betw
een 2 m and 15 m
[Example] 2 m
≤
f,
g, h, i, j, k, l, m
≤
15 m
Betw
een outdoor and indoor units
T
otal pipe length
Piping length betw
een outdoor and indoor units:
≤
135 m
[Example] a+b+c+d+e+f+g+h+i+j+k+l+m
≤
135 m
Minim
um allo
wab
le
length
(a)
Betw
een outdoor unit and the first
refr
iger
ant br
anch kit
Pipe length
Pipe length betw
een outdoor unit and first refr
iger
ant br
anch kit:
≥
5 m
[Example] a
≥
5 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)
≤
40 m
Betw
een outdoor and BP units
Diff
erence in height
Diff
erence in height betw
een outdoor and BP units (H2)
≤
40 m
Betw
een BP and BP units
Diff
erence in height
Diff
erence in height betw
een BP and BP units (H3)
≤
15 m
Betw
een indoor and indoor units
Diff
erence in height
Diff
erence in height betw
een indoor and indoor units (H4)
≤
15 m
Allo
wab
le length after the branc
h
Pipe length
Pipe length from first refr
iger
ant br
anch kit (refnet joint) to indoor unit
≤
40 m
[Example] unit 8:
b+c+m
≤
40 m
[Example] unit 6:
b+e+k
≤
40 m
[Example] unit 3:
d+h
≤
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
When using refnet joints at the first 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.
Outdoor unit capacity type
Refrig
erant branc
h kit name
Indoor capacity type
Refrig
erant branc
h kit name
RXYQ8+10
KHRQ22M29T9
<200
KHRQ22M20T
RXYQ12~18 KHRQ22M64T
200
≤
x<290
KHRQ22M29T9
290
≤
x<585
KHRQ22M64T
(a)
The refr
iger
ant sound from the outdoor unit can be tr
ansmitted.
indoor unit
refr
iger
ant br
anch kit (refnet joint)
BP unit
NOTE
The refr
iger
ant br
anch kits m
ust be positioned as close to the BP units
as possib
le (c
, d, e m
ust be as shor
t as possib
le).
BP1
1
2
3
A
B
BP1
BP3
f
a
de
bc
g
h
4
56
BP2
ij
k
7
H4
l
H1
H2
8
m
H3
Summary of Contents for VRVIII RXYQ-PR1
Page 30: ...NOTES NOTES...
Page 32: ...4PW44039 1D Copyright Daikin...
