32
The 48A Series units have a large number of factory-
installed options which were previously available only as
accessories. Some of the available options can also be installed
in the field if needed. In most cases the units have been
pre-wired so that the accessories can be easily installed.
Instructions are shipped with each accessory. Configuration of
the controls for these accessories as well as the factory-installed
options can be found in the Controls, Start-up, Operation,
Service and Troubleshooting book. The following is a list of
some of the common accessories:
• Thermostats and space temperature sensors
• LP (liquid propane) conversion kit
• Accessory barometric relief damper
• Accessory power exhaust
• Non-modulating to modulating power exhaust
• Condenser coil hail guards
• Outdoor humidity sensor (used for economizer enthalpy
changeover)
• Return air humidity sensors (used for economizer
differential enthalpy changeover)
• Return air smoke detector
• Controls expansion module (used for interface to build-
ing management systems, not typically needed on
system with the Carrier Comfort Network
®
[CCN]
system)
• Plugged filter sensor
• Motormaster
®
V low ambient head pressure control
MOUNTING ANGLE
FILTER TRACK
ASSEMBLY
Fig. 29 — Mounting Angle Attached to
Filter Track Assembly
a48-4329
BLACK SEAL STRIP
(CENTERED)
FILTER COVER
Fig. 30 — Attaching Seal Strip to Filter Cover
48-1110
42.56”
42” MIN.
S/A
R/ A
ECONOMIZER
HOOD
ECONOMIZER
HOOD
J BO X
PLENUM RA TED
CABLE
(FIELD SUPPLIED )
12.94
(UNI T
OPENING)
NOTE: 027-050 SIZES SHOWN (2 POWER EXHAUST FANS).
SIZE 060 HAS 3 POWER EXHAUST FANS. ALL
UNIT SIZES HAVE THE SAME SIZE POWER EXHAUST.
“END #2”
“END #1”
AL TERNA TE
LOCA TIO N
(END)
23.28”
TY P
42.62
TYP
LOCA TIO N
BAROMETRIC RELIEF
OR POWER EXHAUST
“SIDE #2”
23.28”
“SIDE #1”
42.62”
J BO X
R/ A
S/A
Fig. 31 — Power Exhaust Relocated to Side Return Duct
IMPORTANT: Carrier recommends the installation of
field-fabricated wind baffles on all vertically oriented
condenser coils when operating in environments with
prevailing winds of more than 5 mph and where tem-
peratures drop below 32 F. See the Motormaster
accessory installation guide for instructions.
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