Powering The Unit; Climatic - Lennox FCM 85 Installation, Operating And Maintenance

COMMISSIONING
STARTING THE UNIT
At this point the unit circuit breakers should be open
You will need a DS50 maintenance controller or Adalink
with appropriate Interface.
The jumpers are factory set and the configuration switches
are adjusted depending on the option the type of unit.
Connecting the CLIMATIC displays
Close the 24V Control Circuit breakers.
The CLIMATIC 50 starts after 30s
Reset the DAD photo (If fitted)
IOM – FLEXY II – 0308 – E
Check and adjust the control settings.
Refer to the control section in this manual to adjust the
different parameters.

POWERING THE UNIT

- Power up the unit by closing the isolator switch (if
fitted). - At this point the blower should start unless the
climatic does not energise the contactor. In this particular
case the blower can be forced by bridging the port NO7
and C7 on connector J14 on the Climatic. Once the fan
is running, check the rotation direction. Refer to the
rotation arrow located on the fan.
- 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.
NOTE: A compressor rotating in the wrong direction will
fail.
- If the fan turns in the wrong direction (the right direction
is shown on figure n° 11), disconnect the main power
supply to the machine at the building's mains switch,
reverse two phases and repeat the above procedure.
- Close all circuit breakers and power up the unit, remove
the bridge on connector J14 if fitted.
- If now only one of the components rotates in the wrong
direction, disconnect the power supply at the machine's
isolator switch (if fitted) and reverse two of the
component's phases on the terminal within the electrical
panel.
- Check the current drawn against the rated values, in
particular on the supply fan (ref. page 33).
- If the readings on the fan are outside the specified
limits, this usually indicates excessive air flow which will
affect the life expectancy and the thermodynamic
performances of the unit. This will also increase the risks
of water ingress into the unit. Refer to the "Air Flow
Balancing" section to correct the problem.
At this point attach the manometers to the refrigerant
circuit
Fig. 11
Page 32