Commissioning; Bef Ore Connecting The Power; Before Starting - Lennox FLEXY II Series Installation, Operating And Maintenance

COMMISSIONING

THIS WORK MUST ONLY BE CARRIED OUT
BY T RAINED REFRIGERATION ENGINEERS
FILL THE COMMISSIONNING SHEET AS Y OU GO
ALONG
Don't forget to
open the
isolation Valves
on the liquid line

before starting

the unit (see
sticker below )
ISOLATION VALVES M UST BE
OPENED BEFORE RUNNING
G1
ELECTRICAL CONNECTIONS
- 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.
ENSURE THAT TH E POWER SUPPLY
INCLUDES 3 PHASES
- Check the f ollowing wire connections f or tightness:
Main switch connections, mains wires linked to the
contactors and circuit breakers and the cables in the
24V control supply circuit.
How to connect roof curbs and energy recov ery module
IOM – FLEXY II – 1007 – E
G2
Connector for the roof
curb motor or the
extraction box' one
Connector for the roof
curb actuator or the
extraction box' one
Cables and their connectors corresponding to the roof
curb' motor and actuator and extraction box' ones are
already rolled up in these elements; it is enough to bring
them through the openings envisaged and to connect them
on the sites indi c ated on the figure 10.
It's the same procedure when y ou hav e an energy
recov ery module.
PRELIMINARY CHECKS
- Ensure that all drive motors are secure.
- Ensure that the adjustable pulley blocks are secure
and that the belt is tensioned with the transmission
correctly aligned. Ref er to the next section foe details.
- Using the electrical wiring diagram, check the
conf ormity of the electrical safety devices (circuit
breaker settings, presence and rating of f
- Check the temperature probe connections.
Connector for the
energy recovery
module + Fres h air
sensor
Fig. 10
uses).
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