6
FACTORY OPTIONS AND/OR ACCESSORIES
Economizer
Economizers save energy, money and improve comfort
levels in the conditioned space. They bring in fresh,
outside air for ventilation; and provide cool outside air to
cool your buil ding. This also is the pre ferred m ethod of
low ambient cooling. When integrated with CO2 sensors,
econom izers can provide even more savings by coupling
the ventilation air to only that amount required based on
space occupancy. Economizers are available, installed and
tested by the factory, with either enthalpy or temperature
dry--bulb inputs. There are also models for
electromechanical, direct digital controllers and single
speed fan or 2--speed indoor fan motors. Additional
sensors are available as accessories to optimize the
econom izer. Economizers include gravity controlled
barometric relief that helps equalize building pressure and
ambient ai r pressures. This ca n be a cost effective solution
to prevent building pressurization. Economizers are
available in Ultra Low Leak and standard low leak
versions.
CO
2
Sensor
Improves product ivity and saves money by working with
the economizer to intake only the correct amount of
outside air for ven tilation. As occupants fill your building,
the CO
2
sensor detects their presence through increasing
CO
2
leve ls, and opens the economizer a ppropriately.
When the occupants leave, the CO
2
levels decrease, and
the sensor appropriately closes the economizer. This
intelligent control of the ventilation air, called Demand
Control Ventilation (DCV) reduces the overall load on the
rooftop, saving money.
Smoke Detectors
Trust the experts. Smoke detec tors make your application
safer and your j ob easier. Carrier smoke detectors
immediately shut down the rooftop unit when smoke is
detected. They are available, installed by the factory, for
supply air, return air, or both.
Louvered Hail Guards
Sleek, louvered panels protect the condenser coil from
hail damage, foreign objects, and incidenta l conta ct.
Convenience Outlet (powered or un--powered)
Reduce servic e a nd/or installation costs by including a
conveni ence outlet in your specificati on. Carrier will
install this service feature at our factory. Provides a
convenient, 15 amp, 115v GFCI receptacle with “Wet in
Use” cover. The “powered” option allows the installer to
power the outlet from the line side of the disconnect or
load side as required by code. The “un--powered” opt ion is
to be powere d from a separate 115/120v powe r source.
Non--fused Disconnect
This OSHA--compliant, factory installed, safety switch
allows a service technician to locally secure power to the
rooftop.
Disconnect Switch Bracket
Provides a pre--engineered and sized mounting bracket for
applicati ons requiring a unit mounted fused and non --fused
disconnect of greater than 100 amps. Bracket assures that
no damage will occur to coils when mounting with screws
and other fasteners (16 size only).
Power Exhaust with Barometric Relief
Superior internal building pressure control. This field
installed accessory may eliminate the need for costly,
external pressure control fans.
PremierLink, DDC Controller
This CCN controlle r regulates your rooftop’s performance
to tighter tolerances and expanded limits, as well as
facilitates z oning systems and digital accessories. It also
unites your Carrier HVAC equipment together on one,
cohere nt CCN ne twork. The PremierLink can be fact ory
installed, or easily field installed. Not available with
2--speed Staged Air Volume (SAV) system.
RTU Open, Multi--Protocol Controller
Connect the rooftop to an e xisting BAS without needing
complicat ed translators or adapter modules using the RTU
Open controller. This new controller spe aks the 4 most
common building automation system languages (Bacnet,
Modbus, N2, and Lonworks). Use this controller when
you have an existing BAS.
Time Guard II Control Circuit
This accessory protects your compressor by preventing
short--cycling in the event of some other failure , prevents
the compressor from restarting for 30 seconds after
stopping. Not required with PremierLink, RTU Open, or
authorized commercial thermostats.
Motorized 2--Position Damper
The new Carrier 2--position, motorized outdoor air dampe r
admits up to 100% outside air. Using reliable, gear --driven
technology, t he 2--position damper opens to allow
ventilation a ir and closes when the rooftop stops, stopping
unwanted infiltration.
Manual OA Damper
Manual outdoor air dampers are an econom ical way t o
bring in ventilation air. The dampers are available in 25%
and 50% versions.
Optional Humidi--MiZer Adaptive
Dehumidification System
Carrier’s Humidi--MiZer Adaptive Dehumidification
System is an all--inclusive factory installed option that can
be ordered with any WeatherMaker 48TC**04--16 rooftop
unit.
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