SiEN34-705
Heat Pump 60Hz (RXYQ5~54P)
Installation Manual
283
Example refrigerant branch using REFNET joint and REFNET header
Example refrigerant branch using REFNET header
H1
H2
a
a
i
b
c
d
e
f
g
h
k
j
7
8
H1
H2
Outdoor unit
REFNET header
c
d
e
f
g
h
i
b
1
2
3
4
5
6
7
8
me equivalent pipe length of REFNET joint to be 0.5m, that of REFNET header to be 1m, calculation purposes) (See Note 1 - Next page)
t
≤
10m, Equivalent length between outdoor unit and Outdoor unit multi connection piping kit
≤
13m
if the outdoor unit is below)
header ) to indoor unit
≤
40m (See Note 2 - Next page)
Example unit 8 : a + i
≤
165m
Example unit 6 : a + b + h
≤
165m, unit 8 : a + i + k
≤
165m
Example unit 8 : i
≤
40m
Example unit 6 : b + h
≤
40m, unit 8 :i + k
≤
40m
side.
ty type.
JIS
Piping between refrigerant branch kits
• Choose from the following table in accordance with the total capacity index of
all the indoor units connected below this.
• Do not let the connection piping exceed the main refrigerant piping size.
26A22T
26A33T
26A72T
KHRP26M73TP
wing table in accordance with the total
How to select the REFNET header
• Choose from the following table in accordance with the total capacity index of all the indoor units connected below the REFNET header.
• Note: 250 type indoor unit cannot be connected below the REFNET header.
<
200
200
≤
x< 290
290
≤
x< 640
640
≤
KHRP26M22H (Max. 4 branch)
KHRP26M33H (Max. 8 branch)
KHRP26M72H (Max. 8 branch) (See Note 3 - Next page)
KHRP26M73H (Max. 8 branch) + KHRP26M73HP
How to select the Outdoor unit multi connection piping kit (This is required when the system is multi outdoor unit system.)
• Choose from the following table in accordance with the number of outdoor units.
2 units
3 units
BHFP22P100
BHFP22P151
5HP type
8HP type
10HP type
12~16HP type
18~22HP type
24HP type
26~34HP type
36~54HP type
Indoor unit total capacity index
<
150
150
≤
x< 200
200
≤
x< 290
290
≤
x< 420
420
≤
x< 640
640
≤
x< 920
920
≤
Piping between refrigerant branch kit and indoor unit
• Match to the size of the connection piping on the indoor unit.
20 · 25 · 32 · 40?· 50 type
63 · 80 · 100 · 125 type
200 type
250 type
a:
φ
19.1 × 30m
b:
φ
15.9 ×10m
c:
φ
0
9.5 × 10m
d:
φ
9.5 × 10m
e:
φ
9.5 × 10m
f :
φ
9.5 × 10m
g:
φ
1
6.4 × 10m
h:
φ
1
6.4 × 20m
i :
φ
12.7 × 10m
j :
φ
1
6.4 × 10m
k:
φ
1
6.4 × 9m
(Unit:mm)
(Unit:mm)
(Unit:mm)
mm)
(See Note 1 - Next page)
Indoor unit total capacity index
Refrigerant branch kit name
Number of outdoor units
Connection piping kit name
branch kit name
Outdoor unit capacity type
Gas pipe
Indoor unit capacity type
Liquid pipe
Piping size (O.D.)
+
R= 30 0.26 + 10 0.18 + 10 0.12 + 40 0.059 + 49 0.022 =14.238
b
a
i
c+d+e+f
14.2 kg
⎞
⎟
⎠
×0.18
⎛
⎜
⎝
⎞
⎟
⎠
×0.12 +
⎛
⎜
⎝
⎞
⎟
⎠
×0.059
Example for refrigerant branch using REFNET joint and REFNET header
A
B
1
2
3
4
5
6
Outdoor unit
REFNET joint (A • B)
REFNET header
Example REFNET joint B: indoor units
Example REFNET header: indoor units 1 + 2 + 3 + 4 + 5 + 6
7 + 8
Example REFNET header: indoor units 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8
φ
15.9
φ
19.1
φ
22.2
φ
28.6
φ
34.9
φ
41.3
φ
15.9
φ
19.1
φ
22.2
φ
28.6
φ
34.9
φ
41.3
φ
12.7
φ
15.9
φ
19.1
φ
22.2
φ
6.4
φ
9.5
φ
9.5
φ
12.7
φ
15.9
φ
19.1
φ
9.5
φ
12.7
φ
15.9
φ
19.1
g+h+j+k
Indoor units ( 1 - 8 )
Indoor units ( 1 - 8 )
Piping between Outdoor unit and first refrigerant branch kit.
Piping between first Outdoor unit multi connection piping kit and first refrigerant
branch kit. (Part A)
• Choose from the following table in accordance with the outdoor unit capacity type.
Piping between Outdoor unit multi connection piping kits. (Part B)
Piping between outdoor unit and Outdoor unit multi connection piping kit. (Part C)
• Choose from the following table in accordance with the total capacity type of all
the outdoor units connected above Outdoor unit multi connection piping kit.
H1
H2
a
i
b
Outdoor unit
c
d
e
f
g
h
1
2
3
4
5
6
REFNET header
k
j
7
8
H3
REFNET joint (A • B)
A
B
Indoor units ( 1 - 8 )
H2
8
H1
H3
a
Outdoor unit
REFNET header
c
d
e
f
g
h
i
b
Indoor units ( 1 - 8 )
1
2
3
4
5
6
7
r
t
s
Outdoor unit
26A22T
26A33T
26A72T
KHRP26M73TP
branch kit name
Gas pipe
Liquid pipe
Piping size (O.D.)
Gas pipe
Liquid pipe
Piping size (O.D.)
m)
g
Total length (m)
of liquid piping
size at
φ
12.7
Total length (m)
of liquid piping
size at
φ
9.5
r
≤
10m (Equivalent length:
≤
13m)
s
≤
10m (Equivalent length:
≤
13m)
t
≤
10m (Equivalent length:
≤
13m)
In case the outdoor unit is
RXYQ34 type and the
piping lengths are as at
right
