iom-cliwp-cf-eng
www.clima-flex.com.mx
20
WIRING- MAIN POWER
!
WARNING
!
Electric shock danger.
Improper handling of this equipment poses a risk of personal
injury and can damage the equipment. It is essential to
ensure the equipment is properly grounded.
Only personnel with expertise in operating this equipment
should perform connections and maintenance on the control
panel.
Always disconnect the electrical power before servicing the
equipment. It is critical to install an earth leakage circuit
breaker to prevent risks.
Neglecting to install an earth leakage circuit breaker could
lead to electric shock or fire hazards.
!
DANGER
!
Wiring must be conducted by qualified and licensed electri-
cians due to the risk of electrical shock, which can result in
serious injury or death.
!
CAUTION
!
Static discharge can damage components when handling cir-
cuit boards.
To prevent this, always use an antistatic strap before conduct-
ing any maintenance activities.
Additionally, ensure you do not unplug cables, circuit board
terminal blocks, or plugs while the panels are energized.
!
WARNING
!
The generator should be sized by an electrical engineer
familiar with generator applications.
!
WARNING
!
Always halt the unit prior to switching power from the genera-
tor to the mains. Initiating power transfer while the equipment
is operational can lead to significant damage to the unit.
The main power supply to the unit must originate from a clean
and dependable source. Confirm that the voltage delivered to the
equipment remains stable throughout the day and aligns with the
equipment’s specified requirements as indicated on its nameplate.
Voltage measurements should be taken at the equipment’s field
current connection point while it is operating under full load (at
maximum current operating conditions).
NOTE: In cases where a field-supplied transformer is utilized
to reduce higher input voltages, it is imperative to connect
the center leg to ground, especially when employing a high-
impedance grounding method.
Each outdoor unit is labeled with a “minimum current capacity,”
indicating that the field wiring must be capable of handling at least
this specified current level.
Electrical connections to the unit must be established using copper
wire, ensuring the wire size and quantity are compatible with the
equipment’s terminals. Consult the National Electrical Code (NEC)
for comprehensive ampacity information relevant to different
insulation classes of wiring materials.
A single-point power supply necessitates a singular disconnect
mechanism to provide electrical power to the unit. This setup must
be equipped with a fuse or a circuit breaker, with the fuse value
varying based on the unit model.
Three-phase models require the correct phase alignment for
operation. A phase monitor is incorporated with all three-phase
models to ensure proper phase connectivity. Please refer to
the specific section in this document that details the use and
functionality of the phase monitor
Use With On-Site Generators
When onsite generators are used, transitioning between the main
site power and generator power (and vice versa) requires shutting
down the equipment or disconnecting the power for more than five
seconds. This precaution prevents the introduction of out-of-phase
voltage. To ensure seamless power transfer while the equipment
is under load, it is essential to have a properly installed and fully
synchronized automatic transfer switch.
Generator Sizing
WIRING-LOW VOLTAGE
For low voltage wiring, all 230/208V single-phase and three-phase
equipment come equipped with dual primary voltage transformers.
By default, the equipment is factory-set to the 240V tap. To
adapt the equipment for 208V operation, you should switch the
connection from the 240V tap to the 208V tap. The acceptable
operating voltage ranges for both the 240V and 208V taps will be
specified in the equipment documentation.