Daikin REYQ14PY1B [132/137] B 40m 8 m n p 40m 8 o
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Daikin REYQ14PY1B [132/137] B 40m 8 m n p 40m 8 o

Daikin REYQ12PY1B [132/137] B 40m 8 m n p 40m 8 o
3
1
8
• VRV Systems • Outdoor Units
131
• Outdoor Units • VRV HEAT RECOVERY • REYQ8-48P7Y1B
8 Installation
8 - 3 Refrigerant pipe selection
3P201178-3B
Actual pipe
length
Difference in height between outdoor unit and indoor unit (H1) ≤ 50m (Max 40m if the outdoor unit is below)
Difference in height
Difference in height
Between indoor and indoor units
Total piping length from outdoor unit (*2) to all indoor unit ≤ 1000m
Equvalent pipe length between outdoor unit (*2) and indoor unit ≤ 190m (Note 1)
(Assume eqivalent pipe length of REFNET joint to be 0.5m, that of REFNET header to be 1m, that of BSVQ100, 160 to be 4m, that of BSVQ250 to be 6m for calculation purposes)
Actual pipe
length
REFNET joint (A~G)
Outdoor unit
Branch with REFNET header
Branch with REFNET joint and headerBranch with REFNET joint
(*1) “ ” Indicate the Outdoor unit multi
connection piping kit.
(Suction) gas pipe
Liquid pipe
(Thin):2 pipes
Piping from BS unit to indoor unit or
indoor unit used as cooling only
Piping from Refrigerant branch kit to
Liquid pipe
Suction gas pipe
(Bold):3 pipes
Piping from outdoor unit to BS unit
Example of connection
(Connection of 8 indoor units)
12
BS
Multi
outdoor
system
REYQ
18~48
B1 ~ B4
1 ~ 6
7 , 8
Between outdoor and indoor units
Difference in height
r
≤
10m
u + s
≤
10m
u + t
≤
10m
6 : b +
≤ 40m, 8: m + n + p ≤
40m
8 : o
≤
40m
a
b
c
d
e
a
b
c
d
e
H1
H1
H1
H2
s
r
pn
f
k
i
f
ki
q
o
m
pn
qom
g
G
F
j
ED
C
B
A
H1
S
r
E
DC
BA
B1 B2 B3 B4
1234567
8
H2
g
G
F
1234567
8
B1 ~ B5
1 ~ 4 , 7 , 8
5 , 6
B1 ~ B4
1 ~ 6
7 , 8
B1 ~ B4
1 ~ 6
7 , 8
B1 ~ B5
1 ~ 4 , 7 , 8
5 , 6
B1 ~ B4
1 ~ 6
7 , 8
a
a
m
m
c
d
e
f
g
h
i
j
k
o
n
A
A
B
H2
B1 B2 B3 B4
B5
123456 7
8
H3
r
ts
H3
H3
r
ts
a
b
c
d
e
f
h
k
o
B
8
H2
u
r
ts
a
u
B1 B2 B3 B4
123456 7
B5
b
c
d
e
m
p
p
n
b
g
h
i
j
k
f
d
b
h
j
f
o
n
H2
H1H1
B1 B2 B3 B4 B5 B6
B1 B2 B3 B4 B5 B6
1234567
8
1234567
8
c
e
m
g
i
k
o
n
H2
r
t
s
u
g
i
j
1
2
Outdoor
unit
side
BS
Unit
Indoor
unit
side
HP/LP gas pipe
(*2) In case of multi outdoor system, re-read
“outdoor unit” to “the first Outdoor unit multi
connection piping kit” as seen from the
indoor unit.
Single
outdoor
system
REYQ
8~16
: BS Unit
: Indoor unit (Cool/Heat selection possible)
: Indoor unit (Cooling only)
First outdoor unit multi connection piping kit
Outdoor unit Outdoor unit
: BS Unit
: Indoor unit (Cool/Heat selection possible)
: Indoor unit (Cooling only)
: BS Unit
: Indoor unit (Cool/Heat selection possible)
: Indoor unit (Cooling only)
: BS Unit
: Indoor unit (Cool/Heat selection possible)
: Indoor unit (Cooling only)
: BS Unit
: Indoor unit (Cool/Heat selection possible)
: Indoor unit (Cooling only)
: BS Unit
: Indoor unit (Cool/Heat selection possible)
: Indoor unit (Cooling only)
REFNET joint (A~G)
Outdoor unit
Outdoor unit Outdoor unit
REFNET joint (A, B)
REFNET header
REFNET header
REFNET header
REFNET header
REFNET joint (A, B)
Pipe length between outdoor unit (*2) and indoor unit ≤ 165m
Example 8 : a + b + c + d + e + s ≤ 165m
Example 6 : a + b + ≤ 165m, 8 : a + m + n + p ≤ 165m
Example 8 : a + o
≤
165m
Equivalent
length
Total extention length
Between outdoor unit (*2)
and indoor unit
Between first outdoor unit multi
connection piping kit and outdoor unit
(in case of multi system)
Actual and
Equivalent
pipe length
Actual pipe length from first outdoor unit multi connection piping kit to outdoor unit ≤ 10m
Equivalent pipe length from first outdoor unit multi connection piping kit to outdoor unit ≤ 13m
Allowable
height
difference
Outdoor unit
Between outdoor and indoor units
Between outdoor and outdoor units
Allowable length after the branch
Difference in height between adjacent indoor units (H2) ≤ 15m
Difference in height between adjacent outdoor units (H3) ≤ 5m
Actual pipe length from first refrigerant branch kit (either REFNET joint or REFNET header) to indoor unit ≤ 40m (Note 2)
Example 8 : b + c + d + e + s ≤ 40m
Example
Example
(Equivalent length
≤
13m)
(Equivalent length
≤
13m)
(Equivalent length
≤
13m)

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