English
6
6-5 Example of connection
Example of connection
(Connection of 8 indoor units)
Indoor
unit
side
Outdoor
unit
side
12
BS
Unit
Suction gas pipe
HP/LP gas pipe
Liquid pipe
(Suction) gas pipe
Liquid pipe
Piping from outdoor unit to BS unit
Piping from BS unit to indoor unit or
Piping from Refrigerant branch kit to
indoor unit used as cooling only
(Bold):3 pipes
(Thin):2 pipes
(*1) “ ” Indicate the Outdoor unit multi
connection piping kit.
(*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.
Branch with REFNET joint
Branch with REFNET joint and header
Branch with REFNET header
Single
outdoor
system
REYQ
8~16
Multi
outdoor
system
REYQ
18~48
Outdoor unit
Outdoor unit
Outdoor unit
Outdoor unit
Outdoor unit
Outdoor unit
REFNET joint (A~G)
REFNET joint (A~G)
B1 ~ B4
: BS Unit
1 ~ 6
: Indoor unit (Cool/Heat selection possible)
7 , 8
: Indoor unit (Cooling only)
REFNET joint (A, B)
REFNET header
REFNET header
First outdoor unit multi connection piping kit
REFNET joint (A, B)
REFNET header
REFNET header
Maximum
allowable
length
Allowable
height
difference
Allowable length after the branch
Between outdoor unit (*2)
and indoor unit
Between first outdoor unit multi
connection piping kit and outdoor unit
(in case of multi system)
Between outdoor and indoor units
Between indoor and indoor units
Between outdoor and outdoor units
Actual pipe
length
Equivalent
length
Actual and
Equivalent
pipe length
Actual pipe
length
Difference in height
Difference in height
Difference in height
Total extention length
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
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 o
f BSVQ250 to be 6m for calculation purposes)
Total piping length from outdoor unit (*2) to all indoor unit
≤
1000m
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
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
Difference in height between outdoor unit and indoor unit (H1)
≤
50m (Max 40m if the outdoor unit is below)
Difference in height between adjacent indoor units (H2)
≤
15m
Difference in height between adjacent outdoor units (H3)
≤
5m
Outdoor unit
r
≤
10m
(Equivalent length
≤
13m)
u + s
≤
10m
(Equivalent length
≤
13m)
u + t
≤
10m
(Equivalent length
≤
13m)
Example 6 : b +
≤
40m, 8: m + n + p
≤
40m
Example 8 : o
≤
40m
a
b
c
d
e
a
b
c
d
e
H1
H1
H1
H2
s
r
p
n
f
k
i
f
k
i
q
o
m
p
n
q
o
m
g
G
F
j
AB
C
D
E
H1
S
r
AB
C
D
E
B1
B2
B3
B4
12
34
567
8
H2
g
G
F
12
34
567
8
B1 ~ B5
: BS Unit
1 ~ 4 , 7 , 8
:
Indoor unit (Cool/Heat selection possible)
5 , 6
: Indoor unit (Cooling only)
B1 ~ B4
: BS Unit
1 ~ 6
:
Indoor unit (Cool/Heat selection possible)
7 , 8
: Indoor unit (Cooling only)
B1 ~ B4
: BS Unit
1 ~ 6
:
Indoor unit (Cool/Heat selection possible)
7 , 8
: Indoor unit (Cooling only)
B1 ~ B5
: BS Unit
1 ~ 4 , 7 , 8
:
Indoor unit (Cool/Heat selection possible)
5 , 6
: Indoor unit (Cooling only)
B1 ~ B4
: BS Unit
1 ~ 6
: Indoor unit (Cool/Heat selection possible)
7 , 8
: Indoor unit (Cooling only)
a
a
m
m
c
d
e
f
g
h
i
j
k
o
n
A
A
B
H2
B1
B2
B3
B4
B5
12
3
4
5
6
7
8
H3
r
t
s
H3
H3
r
t
s
a
b
c
d
e
f
h
k
o
B
8
H2
u
r
t
s
a
u
B1
B2
B3
B4
12
3
4
5
6
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
H1
H1
B1
B2
B3
B4
B5
B6
B1
B2
B3
B4
B5
B6
12
3
4
5
6
7
8
12
3
4
5
6
7
8
c
e
m
g
i
k
o
n
H2
r
t
s
u
g
i
j
1
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01_EN_3P201178-3B.fm Page 6 Friday, May 18, 2007 5:21 PM
