Installation, Operation and Maintenance Manual
Page
32
of
100
5
Electrical Connections
WARNING
Risk of electric shock can cause injury or death. Disconnect local and
remote electrical power before working within unit.
Customer must provide earth ground to unit, per NEC, CEC and local codes, as
applicable. Before proceeding with installation, read all instructions, verify that
all the parts are included and check the nameplate to be sure the voltage
matches available utility power.
WARNING
Arc flash and electric shock hazard. Risk of electrical shock could
result in injury or death. Disconnect all remote electrical power supplies prior
to working on or within the unit. Wear appropriate personal protective
equipment per NFPA 70E before working within unit. Use voltmeter to make
sure power is turned off before making any electrical connections. Failure to
comply can cause injury or death.
NOTICE
Before proceeding with electrical connections, make certain that the
volts, hertz and phase correspond to that specified on the unit electrical
nameplate. Use copper conductors only.
WARNING
Do not connect any additional loads to the system control
transformers. Connecting additional loads to the factory supplied control
transformer may result in overloading of the transformer.
WARNING
Improper wire connections will result in the reverse rotation of the
scroll compressor and will eventually result in damage to the compressor. To
correct this problem, exchange any two of the incoming main power wires at
the main power terminal block or optional disconnect switch.
Do NOT rewire the uni
t’s individual components.
WARNING
Check the wiring connections in the electrical control panel to ensure
they are tight. Screw terminals may become loose in transit. Tightening of
wiring connections is the responsibility of the installing contractor. Remove all
packing and shipping materials from the unit before installation.
WARNING
The Data Aire dap4 or Mini-dap4 controller does not isolate power
from the unit, even in the Unit OFF mode. Some internal components require
and receive power even during the Unit OFF mode of dap4 controller.
The factory-supplied optional disconnect switch is located inside the unit
electrical control panel. The line side of this switch contains live high voltage.
The only way to ensure that there is NO voltage inside the unit is to disconnect
all external line power to unit. Follow all local codes.
