20
|
Electrical installation
Installer and user reference guide
128
RYMA5+RXYA8~20A7Y1B
VRV 5 heat pump
4P749918-1 – 2023.12
a
a
A
B
b
b
c
b
b
b
j
f
g
i
i
e
d
c
c
h
i
a
Outdoor unit
b
Indoor unit + SV unit
c
Indoor unit (direct connection)
d
Main line
e
Branch line 1
f
Branch line 2
g
Branch line 3
h
Branch line 4
i
No branch is allowed after branch
j
Central user interface (etc...)
A
Outdoor/indoor interconnection wiring
B
Master/slave interconnection wiring
NOTICE
Sheathed and shielded cables are required for interconnection wiring between
outdoor unit and SV unit.
Example:
a
b
f
c
f
e
g
d
c
B
i
i
h
h
j
a
Field power supply (with earth leakage protector)
b
Main switch
c
Earth connection
d
Outdoor unit
e
Indoor unit
f
User interface
g
SV unit
h
Circuit breaker
i
Fuse
j
Cool/heat selector
20.1.3 Guidelines when knocking out knockout holes
To punch a knockout hole, hit on it with a hammer.
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