Daikin RXYSQ-P8Y1, Технические данные инструкция

Страница: 36 / 39

• Outdoor Unit • VRVIII-S heat pump • RXYSQ-P8Y1
1
11
• VRV Systems • Outdoor Unit 34
11 Installation
11 - 2 Refrigerant Pipe Selection
BP 1
1 2 3
A B
BP 1
BP 3
f
a
e d
c b
g h
4 5 6
BP2
i j k
7
H4
l
H1
H2
8
m
H3
RXYSQ-P8Y1B
4PW66305-1
Example of connection
(Connection of 8 units heat pump system)
indoor unit
refrigerant branch kit (refnet joint)
BP unit
The refrigerant branch kits must be positioned as close to the BP units as
possible (c, d, e must be as short as possible).
Branch with refnet joint
Maximum
allowable
length
Between outdoor and BP units Total pipe length
Pipe length between outdoor and BP units
”
55 m
[Example] 3 BP units: a+b+c+d+e
”
55 m
Between BP and indoor units Total pipe length
Piping length between BP and indoor units: RXYSQ4 ” 60 m, RXYSQ5 ” 80 m, RXYSQ6 ” 90 m
[Example] RXYSQ5: f+g+h+i+j+k+l+m ” 80 m
Between BP and an indoor unit 1 room length
Pipe length between BP and an indoor unit: ” 15 m
[Example] f, g, h, i, j, k, l, m ” 15 m
Minimum allowable
length(*) Between outdoor unit and the fi rst
refrigerant branch kit
Pipe length
Pipe length between outdoor unit and first refrigerant branch kit: • 5 m
[Example] a • 5 m
Allowable height
Between outdoor and indoor units Difference in height Difference in height between outdoor and indoor units (H1) ” 30 m
Between outdoor and BP units Difference in height Difference in height between outdoor and BP units (H2) ” 30 m
Between BP and BP units Difference in height Difference in height between BP and BP units (H3) ” 15 m
Between indoor and indoor units Difference in height Difference in height between indoor and indoor units (H4) ” 15 m
Allowable length after the branch Pipe length
Pipe length from first refrigerant branch kit (refnet joint) to indoor unit ” 40 m
[Example] unit 8: b+c+m ” 40 m
[Example] unit 6: b+e+k
”
40 m
[Example] unit 3: d+h ” 40 m
Refrigerant branch kit selection
Refrigerant branch kits can only be used with R410A.
Use the following refnet joint: KHRQ22M20T.
(*) The refrigerant sound from the outdoor unit can be transmitted.
Pipe size selection
How to calculate the additional refrigerant to be charged
Additional refrigerant to be charged R (kg)
R should be rounded off in units of 0.1 kg
Example
Indoor 4: 2.5 kW
`
Indoor 5: 3.5 kW Qe=11.0 kW
Indoor 6: 5.0 kW
➡
(Gas pipe) Ø15.9x1.0 and (liquid pipe) Ø9.5x0.8
Example for refrigerant branch using refnet joint
a: Ø9.5x10 m d: Ø9.5x10 m g: Ø6.4x10 m j: Ø6.4x10 m m: Ø6.4x8 m
b: Ø9.5x10 m e: Ø9.5x10 m h: Ø6.4x10 m k: Ø6.4x5 m
c: Ø6.4x10 m f: Ø6.4x10 m i: Ø6.4x10 m l: Ø6.4x5 m
R=[40 x 0.054] + [78 x 0.022] = 3.876 Ÿ 3.9 kg
Piping size (outer diameter x minimum
thickness)
Symbol Gas pipe Liquid pipe
Between outdoor and fi rst
refrigerant branch kit
a Ø19.1x1.0
Ø9.5x0.8
Between refrigerant branch kit and
refrigerant branch kit
b Ø15.9x1.0
Between refrigerant branch kit and
BP unit
c, d, e
Total indoor
capacity Q
Gas pipe Liquid pipe
Qc, Qd, Qe
” 5.0 kW
Ø12.7x0.8 Ø6.4x0.8
Qc, Qd, Qe
>5.0 kW
Ø15.9x1.0 Ø9.5x0.8
Qc, Qd, Qe is total connected indoor capacity.
c, d, e indicates the symbols in the fi gure.
R= x0.054+ x0.022
Total length (m) of liquid
piping size at Ø9.5 )
Total length (m) of liquid
piping size at Ø6.4 )