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Daikin RXYQ5PY1 Service Manual Page 289

Daikin r-410a heat pump 50hz/60hz cooling only 50hz.
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SiEN34-705
Example refrigerant branch using REFNET joint and REFNET header
Outdoor unit
a
H1
REFNET header
c
1
Outdoor unit
a
H1
REFNET header
c
1
Indoor units ( 1 - 8 )
Example unit 6 : a + b + h ≤ 165m, unit 8 : a + i + k ≤ 165m
if the outdoor unit is below)
Example unit 6 : b + h ≤ 40m, unit 8 :i + k ≤ 40m
side.
wing table in accordance with the total
Example REFNET joint B: indoor units
Example REFNET header: indoor units 1 + 2 + 3 + 4 + 5 + 6
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.
Outdoor unit capacity type
5HP type
8HP type
10HP type
12~16HP type
18~22HP type
24HP type
26~34HP type
36~54HP type
(See Note 1 - Next page)
Total length (m)
+
×0.12 +
of liquid piping
×0.18
size at φ12.7
Installation Manual
REFNET joint (A • B)
i
A
B
k
b
j
7
8
g
d
e
f
h
2
3
4
5
6
Indoor units ( 1 - 8 )
REFNET joint (A • B)
H3
i
A
B
k
b
j
7
8
H2
g
d
e
f
h
2
3
4
5
6
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.
Indoor unit total capacity index
< 200
200 ≤ x< 290
290 ≤ x< 640
640 ≤
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.
Number of outdoor units
2 units
3 units
7 + 8
Piping size (O.D.)
Gas pipe
Liquid pipe
φ15.9
φ19.1
φ9.5
φ22.2
φ12.7
φ28.6
φ15.9
φ34.9
φ19.1
φ41.3
Example for refrigerant branch using REFNET joint and REFNET header
Total length (m)
of liquid piping
×0.059
In case the outdoor unit is
size at φ9.5
RXYQ34 type and the
piping lengths are as at
right
R= 30 0.26 + 10 0.18 + 10 0.12 + 40 0.059 + 49 0.022 =14.238
a
Example refrigerant branch using REFNET header
a
H2
b
1
Outdoor unit
b
Example unit 8 : a + i ≤ 165m
Outdoor unit
r
Example unit 8 : i ≤ 40m
KHRP26M22H (Max. 4 branch)
KHRP26M33H (Max. 8 branch)
KHRP26M72H (Max. 8 branch) (See Note 3 - Next page)
KHRP26M73H (Max. 8 branch) + KHRP26M73HP
Example REFNET header: indoor units 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8
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.
Indoor unit total capacity index
< 150
150 ≤ x< 200
(Unit:mm)
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.
Indoor unit capacity type
20 · 25 · 32 · 40?· 50 type
63 · 80 · 100 · 125 type
200 type
250 type
a: φ19.1 × 30m
b: φ15.9 ×10m
c: φ09.5 × 10m
g+h+j+k
b
i
c+d+e+f
Heat Pump 60Hz (RXYQ5~54P)
REFNET header
Outdoor unit
g
c
d
e
f
h
i
2
3
4
5
6
7
H2
8
Indoor units ( 1 - 8 )
REFNET header
H3
a
g
c
d
e
f
h
i
1
2
3
4
5
6
7
H2
8
Indoor units ( 1 - 8 )
r ≤ 10m (Equivalent length: ≤ 13m)
s ≤ 10m (Equivalent length: ≤ 13m)
t
t ≤ 10m (Equivalent length: ≤ 13m)
s
Refrigerant branch kit name
Connection piping kit name
BHFP22P100
BHFP22P151
Piping size (O.D.)
Gas pipe
φ15.9
φ19.1
φ22.2
φ28.6
φ34.9
φ41.3
Piping size (O.D.)
Gas pipe
φ12.7
φ15.9
φ19.1
φ22.2
d: φ9.5 × 10m
g: φ16.4 × 10m
e: φ9.5 × 10m
h: φ16.4 × 20m
f : φ9.5 × 10m
i : φ12.7 × 10m
14.2 kg
H1
H1
(Unit:mm)
Liquid pipe
φ9.5
φ12.7
φ15.9
φ19.1
(Unit:mm)
Liquid pipe
φ6.4
φ9.5
j : φ16.4 × 10m
k: φ16.4 × 9m
283

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