Carrier 50NC Series - 13 Factory Options and Accessories; Air Fi Lters; Stop-Drop in the Indoor Coil

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13 - FACTORY OPTIONS AND ACCESSORIES
13.2 Stop-drop in the indoor coil
● The stop-drop can be installed in the indoor coil. It is
recommended in cases where a high moisture content in the
air is foreseen or when the airfl ow is high.
● The stop-drop is accessed through the panel of the electrical
cabinet of the indoor module. It is necessary to fold down this
frame (Allen M4 screws), and then remove the access window
to the stop-drop (self-drilling screws).
Slide tab
● The stop-drop frames are easily removable. They can be
moved by rail by lifting the tab.
Screw knob
Cabinet fi xing
screws
Access window
to the stop-drop
Connecting part
between frames
Filter extraction panels
(side or bottom)
13.1 Air fi lters
● The unit is shipped as standard with G4 fi lters, mounted in a
holder structure attached to the return of the indoor module.
Note: This structure can be disassembled for space reasons
during transport.
The structure can also accommodate other fi lter combinations:
- G4 gravimetric fi lters with low pressure drop (l.p.d.).
- G4 gravimetric fi lters standard type + F7 opacimetric fi lters.
- G4 gravimetric fi lters with low pressure drop (l.p.d.) + F7
opacimetric fi lters.
● The thickness of the frames is 25 mm for the G4 standard type
and 50 mm for the G4 low pressure drop and all F7 opacimetric
fi lters.
Filters supplied from the factory can be replaced on site by
other types of fi lters with diff erent thickness.
The filter holder structure supports the following filter
combinations: 25 mm, 25 mm + 50 mm, 50 mm + 50 mm.
The fi lter holder structure incorporates a tensioner and two
screw knobs that lock the position of the frames after they
are placed.
● The fi lter holder structure is prepared for lateral or lower
removal.
To remove the frames, unscrew the closing panels (Allen M4
screws) and remove the 2 screw knobs, located on either
side of the unit. Then separate the tensioner and remove the
frames from each row. Finally, remove the connecting parts
between the frames.
Note: the fi lter's cleaning procedure is explained in the chapter
“Maintenance”.