English
8
6-5 Example of connection
(Example)
With REFNET header
,
indoor units 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8
(Example)
With REFNET joints B
, indoor units 7 + 8
(Example)
With REFNET header
, indoor units 1 + 2 + 3 + 4 + 5 + 6
Example unit 6 :
a + b + h
≤
150m, 8 :
a + i + k
≤
150m
Example unit 8 :
a + i
≤
150m
Individual outdoor
unit system (Q8~16)
Example Refrig
erant Branc
h using REFNET Joint
Example Refrig
erant Branc
h using REFNET Joint
and REFNET Header
Example Refrig
erant Branc
h using REFNET Header
a
hi
j
k
l
m
n
hi
j
k
l
m
n
1
23
4
5
6
7
1
23
4
5
6
7
8
8
bc
d
e
f
g
a
u
rs
bc
t
de
f
g
p
p
H1
H1
H3
H2
H2
H1
H1
H3
H1
H1
H3
H2
H2
H2
AB
C
D
E
F
G
AB
C
D
E
F
G
Outdoor unit
Outdoor unit
First outdoor unit
m
ulti connection
piping kit
REFNET Joints (A-G)
REFNET Joints (A-G)
Outdoor unit
Outdoor unit
Outdoor unit
Outdoor unit
REFNET Header
REFNET Header
REFNET Joints (A • B)
REFNET Joints (A • B)
M
ulti-connecting
outdoor unit
system (Q18~)
Actual Pipe Length
Pipe length betw
een outdoor unit (*2) and indoor units
≤
150m
Example unit 8 :
a + b + c + d + e + f + g + p
≤
150m
Equiv
alent pipe length betw
een outdoor unit (*2) and indoor unit.
≤
175m (assume equiv
alent length of REFNET joint to be 0.5m, that of REFNET header to be 1m, calculation pur
poses
.)
Diff
erence in height betw
een outdoor unit and indoor unit (H1).
≤
50m (
≤
40m if the outdoor unit is belo
w
.)
Diff
erence in height betw
een indoor units
. (H2)
≤
15m
Diff
erence in height betw
een outdoor units
. (H3)
≤
5m
Example unit 8 :
b + c + d + e + f + g + p
≤
40m
Example unit 6 :
b + h
≤
40m, 8 :
i + k
≤
40m
Example unit 8 :
i
≤
40m
Piping length from the first refr
iger
ant br
anch kit (REFNET joint or REFNET header ) to indoor unit.
≤
40m (See Note1 - Ne
xt page)
T
otal pipe length from outdoor unit (*2) to all and indoor units
.
≤
300m
Actual pipe length betw
een outdoor unit m
ulti connection piping kit and outdoor unit.
≤
10m
Equiv
alent length betw
een outdoor unit m
ulti connection piping kit and outdoor unit.
≤
13m
Actual Pipe Length
Ho
w to select REFNET joint
2 set
3 set
BHFP22P100
BHFP22P151
(Example)
With REFNET joints C
,
indoor units 3 + 4 + 5 + 6 + 7 + 8
Example of indoor units connected do
wn-stream
Number
s of outdoor units
Outdoor unit m
ulti connection piping kit name
Q8, 10 type
Q12~22 type
Q 24 type~
KHRP26A33T
KHRP26A72T
KHRP KHRP26M73TP
Capacity type of outdoor unit
Refrig
erant branc
h kit name
KHRP26A22T
KHRP26A33T
KHRP26A72T
KHRP KHRP26M73TP
T
otal capacity inde
x of indoor units
Refrig
erant branc
h connection to be used
Connection Examples
(as connecting 8 indoor units)
Indoor unit ( 1 - 8 )
Indoor unit ( 1 - 8 )
Indoor unit ( 1 - 8 )
Indoor unit ( 1 - 8 )
Indoor unit ( 1 - 8 )
Indoor unit ( 1 - 8 )
a
a
u
r
s
t
i
i
b
b
a
a
s
t
r
u
bc
d
e
f
g
h
i
i
cd
e
f
g
h
j
k
REFNET Header
REFNET Header
1
23
4
5
6
1
23
4
5
67
H2
b
rs
u
t
cd
e
f
g
h
1
23
4
5
67
8
8
cd
e
f
g
h
1
23
4
5
6
78
j
k
78
A
A
B
B
(*1)
“ ”
sho
ws outdoor unit m
ulti connection piping
kit.
Outdoor unit connection piping kit m
ust be
located in le
v
el.
(*2)
F
or the m
ulti-connecting systems
, please replace
“outdoor unit”
with
“outdoor unit m
ulti connection
piping kit”
as y
ou read the directions
.
*
W
hen m
ulti outdoor system are installed, be sure to use the special
separ
ately sold outdoor unit m
ulti connection piping kit.
The tab
le at r
ight sho
ws ho
w to select the proper kit.
(*1)
Outdoor unit
r
≤
10m (Equiv
alent Length
≤
13m)
s
≤
10m (Equiv
alent Length
≤
13m)
t
≤
10m (Equiv
alent Length
≤
13m)
•
W
hen REFNET joint is used f
or the first br
anch from outdoor unit (REFNET joint A in abo
v
e
e
.g.),
select from belo
w char
t according to outdoor unit capacity
.
Ho
w to select REFNET header
•
Select from belo
w tab
le according to total indoor units capacity inde
x connected belo
w REFNET header
.
(Note) 250 type indoor unit cannot be connected belo
w the REFNET header
.
Use REFNET joint (s).
Ho
w to select outdoor unit m
ulti connection piping kit
•
Required f
or Q18 or more capacity type of outdoor unit.
•
Other REFNET joints (e
xcept f
or the first br
anch) shall be selected from belo
w tab
le according to
total capacity inde
x of all the indoor units connected belo
w the REFNET joint.
< 200
200
≤
x< 290
290
≤
x< 640
640
≤
x
T
otal capacity inde
x of indoor units
Refrig
erant branc
h connection to be used
KHRP26M22H (max.
4 br
anch)
KHRP26M33H (max.
8 br
anch)
KHRP26M72H (max.
8 br
anch) (* note)
KHRP KHRP26M73HP
< 200
200
≤
x< 290
290
≤
x< 640
640
≤
x
(* Note)
If the pipe siz
e abo
v
e
the REFNET header
is
φ
34.9 or more
,
KHRP26M73HP is
required.
Specified outdoor unit m
ulti connection piping kit
(BHFP22P100,
BHFP22P151)
as an optional
accessor
y m
ust be used f
or a m
ulti-connecting
outdoor unit system.
Ho
w to select (a proper kit) is
according to this sheet.
Mak
e sure
not to use the outdoor unit connection
piping kit (BHFP22M90) or
T-joints.
Betw
een outdoor unit (*2) and
indoor unit
Betw
een outdoor unit m
ulti connection pipint kit
and outdoor unit (Only f
or m
ulti-connecting systems)
Betw
een outdoor unit and indoor unit
Betw
een indoor unit and indoor unit
Betw
een outdoor unit and outdoor unit
Allo
w
a
b
le Length after the Br
anch
Refr
iger
ant br
anch kits can only
be used with R410.
Refrig
erant Branc
h pipe kit selection
Equiv
alent Length
T
otal Extension Length
Actual Pipe Length
Equiv
alent Length
Diff
erence in height
Diff
erence in height
Diff
erence in height
Allo
w
a
b
le
Max.
Length
Allo
w
a
b
le
Hight
Length
Refrig
erant Piping
W
orks (attac
hed tab
le)
01_EN_3P226891-13Q.fm Page 8 Thursday, December 2, 2010 10:15 AM
