Carrier 42C Series Product Data page 3

42D ducted units
A drip lip (removable drain pan exten-
sion) is available for field installation on
ceiling models 42DA,DC,DE and DF.
The drip lip is recommended for all
ceiling models when a valve package is
installed.
Motor/blower assembly can be easi-
ly removed from the unit for ease of
service. Removing this assembly pro-
vides clear access to the entering air
face of the coil, making coil cleaning a
relatively simple matter. Removable
panels make access to components
and connections easy.
42S stacked units
Each Carrier stack unit comes factory
equipped with insulated supply, return,
and drain risers. The design of the 42S
units allows them to be set one on top
of the other in a vertical column rising
floor to floor up the building. Each ris-
er has a 3-in. belled section at the top,
so the riser piping can be connected by
only one sweat connection per riser.
Field-installed couplings or internal
pipe connections are not needed.
Each stack unit is constructed of
18-gage galvanized steel and factory
pre-wired with all control, motor, and
optional electric heat wiring conve-
niently terminating in a single,
accessible junction box. Each stack unit
requires only one field power
connection.
* Sponsored by ASHRAE (American Society of Heating, Refrigerating, and Air-Conditioning Engineers).
Field-mounted accessories, such as
the 3-speed switch/thermostat pack-
age for furred-in units, are equipped
with a pre-wired quick disconnect plug
for easy installation.
The riser size for the stack units can
be specified to match building require-
ments so that cutting, sorting, and han-
dling of the risers is not necessary. All
units arrive tagged as specified by the
customer for efficient delivery to the
correct building location.
Units can be loaded onto delivery
trucks so that they can be off-loaded in
the proper installation sequence.
The 42SG furred-in-stack is a single
unit, designed for concealed
applications in corners or along room
walls. The return-air grille is removable
to allow access for servicing major
components.
The 42SG is also available in
master/slave unit pairs, shipped indi-
vidually and installed and piped togeth-
er in the field. The master unit includes
risers with stub out for field piping con-
nections to the slave unit which has no
risers of its own.
The 42SJ back-to-back furred-in
stack is designed for installation in the
separation wall between 2 rooms. The
unit consists of 2 units piped to a set of
common risers. Each unit has its own
valves and controls. The return-air
grille is removable to allow access for
servicing major components.
The 42SH cabinet stack unit is de-
signed for applications where con-
cealed installations are not possible or
practical. This model features a double-
deflection supply-air grille and an inte-
gral return-air grille access panel. Con-
trols are normally mounted on the unit
but may also be remote wall mounted.
The 42SU universal furred-in stack
is designed for easy field configuration
utilizing laser cut knockouts. Riser,
drain, supply, and outside-air knock-
outs have been strategically located on
the unit for field configuration. Prior to
unit installation, all risers are shipped
separately from the units for pre-instal-
lation and testing purposes.
The 42SM mega furred-in stack unit
is designed for applications requiring
units with increased capacity. The
42SM is designed to deliver 1400 to
2000 CFM at 0.5 in. ESP (external
static pressure). Although usually in-
stalled in a small mechanical closet, the
unit also features an optional decora-
tive return air panel to allow for a clas-
sic high-rise type application. The
unit's high static capability will easily
handle high-efficiency air filters and
decorative supply grilles, while the
modular design provides quiet
operation.
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