Multi F Outdoor Unit Engineering Manual

Power Wiring (208-230V) and Communications Cable Details
WIRING CONNECTIONS
1(L1) 2(L2)
1(L1) 2(L2) 1(L1) 2(L2) 1(L1) 2(L2) 1(L1) 2(L2)
1(L1) 2(L2)
S
S S S S
1(L1) 2(L2) 1(L1) 2(L2) 1(L1) 2(L2) 1(L1) 2(L2)
Indoor Unit Terminal Block
3 3
Outdoor Unit Terminal Block
L
L
N
N
G
Power Supply
Outdoor unit
Main Switch
Circuit Breaker
Three-wire Power Wiring
(Including Ground)
Fuse
* Same Wiring as Branch Distribution Unit (A)
S
Branch Distribution Unit (B)
3 3
COMMUNICATIONS CABLE
POWER WIRING
L1 L2
1(
L1
)2(
L2
)3(A ) 1(
L1
)2(
L2
)3(B)
Branch Distribution Unit (A)
Indoor Unit Terminal Block Indoor Unit Terminal Block Indoor Unit Terminal Block
Figure 102: Multi F MAX LMU540HV System Power Wiring and Communications Cable.
•Allfield-suppliedwiring,components,andmaterialsshouldfollownational,state,andlocalcodesandrequirements.
•Useonlystranded,shieldedcopperconductor.
•Ground wiring isrequiredtopreventaccidental electrical shock during current leakage,communicationproblemsfromelectrical
noise,andmotorcurrentleakage.Donotconnectthegroundlinetothepipes.
•Installamainshutoffswitchorcircuitbreakerthatinterruptsallpowersourcessimultaneously.
•Wiringcablesizemustcomplywithapplicablenational,state,andlocalcodes.
Due to our policy of continuous product innovation, some specications may change without notication.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
WIRING CONNECTIONS | 227
Wiring Connections
MULTI
F
MAX
MULTI
F