Filters - Lennox FLEXY FC 050 Series Installation - Operating & Maintenance Manuel

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filters

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The CLIMATIC system monitors pressure drop across
the filter: The following faults may be identified.
1. Fault code 004 ("filter" diode lit)
or the following icon (if you have a graphic
screen) :
2. Fault code 005
or the following icon (if you have a graphic
screen) :
Item 2 indicates that the filters are out of position : either
they have been damaged or not been replaced during
maintenance. In the latter case, the unit has not stopped
but the increased flowrate may result in the motor
overheating. It is important to check the filter
immediately.
Item 1 indicates that the filters must be changed. The
unit has not stopped but the airflow is likely to be
reduced due to increased pressure drop acros the
filters.
Filter replacement :
After opening the filter access panel, unscrew the
butterfly nuts maintaining the filter support and remove
it (Figure 18).
Remove the cells that are slide-mounted (Figure 19).
Use the rod in the lower filter section to remove the
cells at the botton of the sliders.
Install new filters inside the sliders.
Figure 18
Figure 19
IOM / ROOF-TOP FLEXY™ Series - Page 21
Figure 17