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Piping installation
Installer and user reference guide
95
RYMA5+RXYA8~20A7Y1B
VRV 5 heat pump
4P749918-1 – 2023.12
g
a
f
e
b
c
g
g
d
g
g
g
gg
g
a, b
See table below.
c
Maximum limit of 16 downstream ports of SV units in refrigerant flow-through.
Unused ports must also be counted. E.g. 16 ports=SV8A+SV4A+SV4A.
d
At least one indoor unit must be connected to a SV unit (SV6A and SV8A: always
start from one of the first four ports).
e
Combine two ports when indoor unit capacity is over 140 except when SV1A is
used. Refer to the table below.
f
Direct connection to the outdoor unit. For more information, see
90].
g
SV unit
Description
Model
SV1
SV4
SV6
SV8
Maximum number of connectable indoor units per
SV unit (
a
)
5
20
30
40
Maximum number of connectable indoor units per
SV unit branch (
b
)
5
Maximum capacity index of connectable indoor units
per SV unit (
a
)
250
400
600
650
Maximum capacity index of connectable indoor units
per branch (
b
)
250
140
Maximum capacity index of connectable indoor units
per branch if two branches are combined (
e
)
—
250
Maximum capacity index of indoor units connected to
SV units in refrigerant flow-through (
c
)
650
Maximum number of allowable SV units in refrigerant
flow-through (
c
)
4
Maximum number of ports of SV units in refrigerant
flow-through (
c
)
16
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