Daikin REMQ8P9Y1B, Installation Manual

Page: 14 / 36

Installation manual
9
R REMQ10~16P8 + REMHQ12P8Y1B
VRVIII System air conditioner
4PW48463-1A
6.6. Example of connection
Example of connection (Connection of 8 indoor units)
Branc
h with refnet joint
Branc
h with refnet joint and refnet header
Branc
h with refnet header
Outdoor units installed in a m
ultiple outdoor
unit system (REYQ18~48 + R REYHQ20~24)
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".
(*) In case of m
ulti combination, inter
prete the w
ord "outdoor" as "first outdoor
br
anch".
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+s
≤
165
m
[Example] unit 6:
a+b+l
≤
165 m,
unit 8:
a+m+n+p
≤
165 m
[Example] unit 8:
a+o
≤
165 m
Equiv
alent length
Equiv
alent pipe length betw
een outdoor(*) and indoor units
≤
190 m (Assume equiv
alent pipe length of the refnet joint to be 0.5 m, of the refnet header to be 1.0 m,
of the BSVQ100 and BSVQ160 to be 4 m and of the BSVQ250 to be 6 m (f
or calculation pur
poses)) (See note 1)
T
otal e
xtension length
T
otal piping length from outdoor(*) to all indoor units
≤
1000 m
Betw
een the first outdoor unit m
ulti connection piping kit
and outdoor unit (in case of a m
ultiple outdoor unit system)
Actual and equiv
alent
pipe length
The actual pipe length from the first outdoor unit m
ulti connection piping kit to the outdoor unit
≤
10 m.
(x
≤
10 m, y
≤
10 m, z
≤
10 m)
The equiv
alent pipe length from the first outdoor unit m
ulti connection piping kit to the outdoor unit
≤
13 m.
(x
≤
13 m, y
≤
13 m, z
≤
13 m)
Allo
wab
le height
diff
erence
Betw
een outdoor and indoor units
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 betw
een adjacent indoor units (H2)
≤
15 m
Betw
een outdoor and outdoor units
Diff
erence in height betw
een adjacent outdoor units (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 2)
[Example] unit 8:
b+c+d+e+s
≤
40 m
[Example] unit 6:
b+l
≤
40 m, unit 8:
m+n+p
≤
40 m
[Example] unit 8:
o
≤
40 m
Outdoor unit m
ulti connection piping kit and refrigerant branc
h kit selection
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 (e
xample:
refnet joint
A).
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 indoor unit can not be connected low
er than the refnet header.
Outdoor unit capacity type (Hp)
Refrig
erant branc
h kit name
Indoor capacity type
Refrig
erant branc
h kit name
3 pipes
2 pipes
8+10
KHRQ23M29T
<200
KHRQ23M29H KHRQ22M29H
12~22
KHRQ23M64T
200
≤
x<290
KHRQ23M29H KHRQ22M29H
≥
24
KHRQ23M75T
290
≤
x<640
KHRQ23M64H
KHRQ22M64H
F
or refnet joints other than the first br
anch, select the proper br
anch kit model based on the
total capacity inde
x of all indoor units connected after the refr
iger
ant br
anch.
≥
640
KHRQ23M75H KHRQ22M75H
Ho
w to c
hoose an outdoor m
ulti connection piping kit (this is required when the
system is a m
ultiple outdoor unit system)
Indoor capacity type
Refrig
erant branc
h kit name
3 pipes
2 pipes
Choose from the f
ollo
wing tab
le in accordance with the number of outdoor units
<200
KHRQ23M20T
KHRQ22M20T
Number of outdoor units
Branc
h kit name
200
≤
x<290
KHRQ23M29T9
KHRQ22M29T
290
≤
x<640
KHRQ23M64T
KHRQ22M64T
2
BHFQ23P907
≥
640
KHRQ23M75T
KHRQ22M75T
3
BHFQ23P1357
Example of do
wnstream indoor units
[Example] in case of refnet joint C:
indoor units 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 m
ulti connection piping kit that is sold separ
ately
as an option (BHF1357) f
or the m
ulti installation of outdoor
units
. Selection method is as sho
wn in the r
ight tab
le
.
AB
C
D
E
ab
c
d
e
8
H2
H1
H3
f
ln
p
B1
B2
B3
B4
xy
z
F
h
1
g
G
j
2
k
mo
q
r
s
3
i
4
5
6
7
A
B
am
H2
H1
H3
b
B1
B2
B3
B4
n
p
xy
z
d
1
fh
g
j
i
kl
o
2
3
4
5
6
7
8
ce
B5
a
H2
H1
H3
B1
B2
B3
B4
xy
z
c
1
eg
f
i
hj
l
no
2
3
4
5
6
7
8
k
bd
B2
B3
m
Outdoor unit side (3 pipes)
Indoor unit side (2 pipes)
Suction gas pipe
Gas pipe
HP/LP gas pipe
BS unit
Liquid pipe
Liquid pipe
indoor unit
refnet header
Outdoor unit side (3 pipes)
refnet joint
outdoor m
ulti connection piping kit
Indoor unit side (2 pipes)
Refr
iger
ant br
anch kits can only be used with R410A.