Lennox e-Baltic D BOX 55, Инструкция по установке, эксплуатации и обслуживанию

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COMMISIONING
e-BALTIC-IOM-2020.12-EN
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BEFORE TURNING ON THE POWER
WARNING: ensure that the power supply includes 3 phases with no neutral
Perform a leak detection with a device suitable for the refrigerant of the machine.
Ensure that the power supply between the building and the unit meets local authority standards and that the cable specification
satisfies the start-up and operating conditions displayed on the rating plate.
WIRE CONNECTION TIGHTNESS CHECKS
WARNING: check the wire connection tightness before powering up the unit. Some connections may have loosen during
transport
Check the following wire connections for tightness:
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Main switch connections
•
Mains wires linked to the contactors and circuit breakers
•
Cables in the 24V control supply circuit
•
All other connections of the unit
OIL CHARGE
All units are delivered with a complete oil charge, and there is no need to add any oil before start-up or afterwards. Overcharging
with oil can cause serious problems on an installation, particularly for the compressors.
The oil type depends on compressor model that depends on the unit size. Use only oil approved and recommended by Lennox
POWERING THE UNIT
Power up the unit by closing the isolator switch.
The fans and compressors direction of rotation is checked during the end of line test. They should therefore all turn in either
the right or wrong direction.
WARNING: a compressor rotating in the wrong direction will fail shortly.
If one of the components rotates in the wrong direction, disconnect the power supply at the machine's isolator switch and
reverse two of the component
’ s phases on the terminal within the electrical panel.
While starting the unit, fill in the check list sheet of this manual to be sure that the unit correctly installed and ready to operate.
•
Check the current values per phase on each fan motor.
•
Check the current values per phase on each compressor motor.
•
Check suction and discharge pressures and compressor suction temperature.
•
Check chilled liquid entering and leaving temperatures if water cooled unit.
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Check outdoor air temperature and indoor temperature.
•
Check if DAD is ON.
•
Check that the detector has warmed up and that the LED is green.
These verifications should be made as quickly as possible with a stable cooling load, i.e. the cooling load of the installation
should be the same as the capacity developed by the unit. Measurements taken without heeding this condition will result in
unusable and probably wrong values.
These verifications can only be made once the proper operation of all safety devices and unit controls has been established.
Check if the customer's air ducts are open to be sure the unit is not running with ducts closed. In addition, it is needed to check
if the airflow and available static pressure are in accordance with the unit.