Carrier 50NC Series - Mixing Box (CS Assembly)

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13.5 Mixing box (CS assembly)
13 - FACTORY OPTIONS AND ACCESSORIES
● CS assembly: Mixing box with for air renewal and free-
cooling managed by the electronic control of the unit. The
box incorporates two interlocked dampers with a servomotor.
Assembly and connection on site, at the return of the indoor
module.
Available in Package and Split versions:
The following image shows the positions of the return air (R)
and fresh air (N) dampers.
● The mixing box must be attached to the return panel of the
indoor module using M8 screws (factory provided), in the
positions marked on the panel. To access these screws, it is
necessary to disassemble the panels located on both sides
of the module and which are fi xed with Allen M4 screws.
● The installer has to make the electrical connection between the
mixing box (BOX3 and BOX-ENT) and the electrical cabinet
of the indoor module.
- BOX3: Connection of servomotor and mixing and return
probes (5 wires x 1 mm
2
)
- BOX-ENT (optional): RS485 enthalpic probe for energy
measurement (4 wires x 0,5 mm
2
+ shielding).
Note: See the wiring diagram included with the unit for more
detailed information about the wiring.
BOX3BOX-ENT (optional)
M8 screw
Allen M4 screw
R
N
● In units with mixing box, the fi lter holder structure is located
inside the box. To access the filters, it is necessary to
disassemble the panels located on both sides of the box and
which are fi xed with Allen M4 screws. For its extraction, it is
necessary to remove the 2 screw knobs, located on both sides
of the unit.
Air fi lters
Important: In the Package version, the installer will be
responsible for the construction of a structural support for the
mixing box.
Enthalpic
probe
(optional)
Screw knob
● If the unit is optionally equipped
with a clogged fi lter detector, the
socket at the fi lter inlet must pass
through a wall bushing inside the
box.
Air socket