Samsung DVM PLUS III HR - Power Wiring Diagram

32_ installing the unit
Earth
installing the unit
WIRING WORK
Power wiring diagram
 External connection diagram of DVM PLUS III HR
• Connect the power cable of the outdoor unit after checking that R-S-T(3 phase 3 wires) is
properly connected.
• The communication cable between indoor and outdoor units has no polarity.
• Arrange the cables using cable ties.
• You must install ELCB or ELB since electric shock or fire may occur if you do not install them.
3 phase 3 wires
R S T
R S T OF1 OF2 OF1 OF2
3 phase 3 wires
(208~230V)
Communication
cable among
outdoor units
3 phase 3 wires
(208~230V)
208~230V 208~230V
Indoor Outdoor
Outdoor
Communication cable
between indoor and
outdoor units
Earth
ELCB
Earth
Main unit Sub unit
Indoor
or
MCCB+
ELB
ELCB
Earth
• Indoor power supply must be separated from outdoor power supply.
• Connect the communication cable among the outdoor units when combining the
outdoor units.
• Connect the communication cable between indoor and outdoor units to the main
outdoor unit.
• If the communication cable between indoor and outdoor units and the
communication cable among outdoor units are crossed, communication is not
available.
• The length of the cable among the outdoor units should be under 30m(98'5") or less.
• Do not multiplex the communication cable to prevent communication error.
• Maximum wiring length between the outdoor unit and the farthest indoor unit is
1000m(3280'10").
Communication cable Communication cable
CAUTION
DVM PLUS3 HR_IM_E_32805-2.indd 32 2011-11-11 오후 4:18:27