32
208/230V 3PH
~
60Hz
or 460V 3PH~ 60Hz
L1
L2
L3
Reserved
To
kilowatthour
meter
To
centralized
controller
K1 K2
O A
X Y
P Q
H1 H2
To MS or IDU
communication
bus
To ODU
communication
bus
Wiring Connections
CAUTION
!
Isolate the power supply before accessing unit
electrical terminals.
Install unit so that unit disconnect is accessible.
Follow all local and national codes, as well as
this installation instruction, during installation.
Do NOT overload electrical circuit, as this may
lead to failure and possible fire.
Use specified wiring and cable to make electrical
connections. Clamp cables securely and make
sure that connections are tight to avoid strain on
wiring. Insecure wiring connections may result
in equipment failure and risk of fire.
Wiring must be installed so that all cover plates
can be securely closed.
Do not attempt to repair a damaged power cord.
Do not modify the power cord in any way. Do not
attempt to extend the length of the power cord
or use an extension cord with this appliance. Do
not share the single power outlet with any other
appliances.
WARNING
!
IMPORTANT!
DO NOT adjust DIP switch settings. Settings
may only be adjusted by a trained technician
as part of the commissioning procedures.
Take care when making final power and control cable
connections, cross connection will result in damage
to unit’s main board.
Only apply power to the system after performing all
of the pre-commissioning steps.
Figure 28. Wiring Terminals
This unit must be properly grounded and
protected by a circuit breaker. The ground wire
for the unit must not be connected to a gas or
water pipe, a lightning conductor or a telephone
ground wire.
Do not connect power wires to the outdoor unit
until all other wiring and piping connections
have been completed.
Install all wiring at least 3 feet away from
televisions, radios or other electronic devices
in order to avoid the possibility of interference
with the unit operation.
Separate power wiring supplies must be
provided for the outdoor unit and indoor unit(s).
Do not cross-connect refrigerant piping or
signal wires between VRF systems.
Each VRF
system must be piped and wired separately.
Each indoor unit must have its own electrical
disconnect.
Do not run signal wire and power wire in the
same conduit; keep distance between the
two conduits per local codes. (Make sure to
set address of outdoor unit in case of parallel
multi-outdoor units.
NOTE -
Each outdoor unit requires a separate power
supply protected by a suitably sized circuit breaker.
1. Select the appropriate electrical inlet into the
outdoor unit. Local and national codes apply.
2. Locate the terminal strip in the outdoor unit
control box. Connect the power wiring (sized per
NEC/CEC and local codes) and communications
cable (2-conductor, shielded cable). Refer to unit
nameplate for rated voltage.
Power Terminal Strip
Communication Terminal Strip
NOTE -
Use
18 GA 2-Conductor, Stranded,
Shielded Communication Cable
Always follow NEC/CEC and Local Codes.
Summary of Contents for VPB Series
Page 47: ...47...
