Carrier 40QNC Product Data page 2

LOW SOUND LEVELS
When noise is a concern, the duct- -free split systems are the answer.
The indoor units are whisper quiet. There are no compressors
indoors, either in the conditioned space or directly over it, and
there is none of the noise usually generated by air being forced
through ductwork.
When sound ordinances and proximity to neighbors demand quiet
operation, the 38HDF/QRF unit is the right choice: The advanced,
horizontal blow- -through airflow design distributes air more evenly
over the coil.
SECURE OPERATION
If security is an issue, outdoor and indoor units are connected only
by refrigerant piping and wiring to prevent intruders from crawling
through ductwork. In addition, since 38HDF/QRF units can be
installed close to an outside wall, coils are protected from vandals
and severe weather.
FAST INSTALLATION
The small footprint of the outdoor unit provides additional
benefits. Because they require minimal service and airflow
clearances, the outdoor units can be located virtually anywhere - -
on the ground, roof, balcony, under a deck, or even mounted to an
outside wall.
The indoor hi- -wall units are simple to install. A mounting bracket
is standard with the indoor units and only control wires and piping
need to be run between indoor and outdoor units. These units are
fast and easy to install ensuring minimal disruption to customers in
the home or workplace. This makes the 38HDF (QRF) /40QNC
(QNQ) duct- -free split systems the equipment of choice, especially
in retrofit situations.
SIMPLE SERVICING AND
MAINTENANCE
A single panel provides immediate access to the isolated
compressor and control compartment, allowing a service technician
to check the unit operation without a loss of condenser airflow. In
addition, the blow- -through design of the outdoor section means
that dirt accumulates on the inside surface of the coil. Coils can be
cleaned from the outside using a pressure hose and detergent
without removing grilles or using fin combs.
On all indoor units, service and maintenance expense is reduced
due to easy- -to- -access cleanable filters. In addition, these high wall
systems have extensive
troubleshooting.
self- -diagnostics to assist
BUILT- - IN RELIABILITY
Duct- -free split system indoor and outdoor units are designed to
provide years of trouble- -free operation.
The high wall indoor units include protection against freeze- -up
and high evaporator temperatures on heat pumps.
The condensing units and heat pumps are also protected. There is
a 3- -minute time delay before the compressor will re- -start. An
oversized accumulator, high and low pressure switches ( or liquid
line pressure switch on the heat pump), and compressor internal
overload protection will ensure a reliable system that is ideal for
light commercial applications.
INDIVIDUAL ROOM COMFORT
Maximum comfort is provided because each space can be
controlled individually based on usage pattern. The air sweep
feature provided permits optimal room air mixing to eliminate hot
and cold spots for occupant comfort. In addition, year- -round
comfort can be provided with heat pumps.
ECONOMICAL OPERATION
The duct- -free split system design allows individual room heating
or cooling when required. There is no need to run large supply- -air
fans or chilled water pumps to handle a few spaces with unique
load patterns. In addition, because air is moved only in the space
required, no energy is wasted moving air through ducts.
EASY- -TO- - USE CONTROLS
The high- -wall units have microprocessor- -based controls to
provided the ultimate in comfort and efficiency. The user friendly
wireless remote control provides the interface between user and the
unit.
FLEXIBILITY
A variety of accessories simplify the installation process and help
meet system requirements and weather conditions. See table of
available accessories on page 4.
AGENCY LISTINGS
All systems are listed with AHRI (Air Conditioning, Heating &
Refrigeration Institute), and UL.
in
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