Daikin VRV 5 RXYA8A7Y1B, Инструкция по установке и эксплуатации

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18 | Piping installation
Installer and user reference guide
99
RYMA5+RXYA8~20A7Y1B
VRV 5 heat pump
4P749918-1 – 2023.12
(c)
The limitation can be extended to 90 m if the following conditions are met:
•
The piping length between all indoor units and the SV unit is ≤40 m.
•
Size-up:
→ It is required to size-up both liquid and gas piping between the first branch kit or SV unit and the
last branch kit or last SV unit. The size-up pipe cannot be larger than Ø28.6 mm.
→ It is not required to size-up the piping between the SV unit and indoor units.
→ If the increased pipe size is larger than the pipe size of the main pipe, also increase the size of the
main pipe.
•
In case of size-up of the piping, double its length in the calculation of the total piping length. Make
sure the total piping length is within limitations.
• The piping length difference between the nearest indoor unit to the outdoor unit and the farthest
indoor unit to the outdoor unit is ≤40 m.
Connection with VRV DX indoor units and air handling units (mix application) and connection
with only multiple air handling units (multi application)
H3
H1
E
I
L
A
B2
G
F
B1
a
b
c c
d
f
g
c
d
d
e
b
D
H2
H4
C2
C4
C3
C1
a Outdoor unit
b VRV DX indoor unit
c Safety valve unit (SV)
d VRV DX indoor unit (duct)
e VRV DX indoor unit (large duct)
f EKEXVA-kit
g Air handling unit (AHU)
Pipe Maximum length (actual/equivalent)
Longest pipe from the outdoor unit or
the last multi-outdoor piping branch (A
+B1+C1, A+B2+C2, A+B1+C3, A+B1+D
+C4, A+F+G, A+B2+L) 165 m/190 m
(a)
135 m/160 m
(a)(b)
Longest pipe after the first branch or SV
unit (B1+C1, B2+C2, B1+C3, B1+D+C4, F
+G, B2+L) 40 m/—
(c)
In case of a multi-outdoor setup:
longest pipe from the outdoor unit to
the last multi-outdoor piping branch (E) 10 m/13 m