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IMPORTANT INFORMATION
ABOUT EFFICIENCY AND
INDOOR AIR QUALITY
Central cooling and heating equipment
is only as efficient as the duct system
WARNING
CARBON MONOXIDE (CO) IS A COLORLESS, ODORLESS, POISONOUS
GAS THAT CAN CAUSE SEVERE PERSONAL INJURY OR DEATH.
CARBON MONOXIDE CAN BE PRODUCED BY ANY FUEL-BURNING
DEVICE, INCLUDING BUT NOT LIMITED TO:
• MOTOR VEHICLES
• GENERATORS AND OTHER GASOLINE POWERED TOOLS AND
ENGINES
• GAS AND FUEL-OIL APPLIANCES
• CHARCOAL OR GAS GRILLS
• WOOD OR GAS FIREPLACES AND STOVES
• OUTDOOR CAMPING EQUIPMENT
CARBON MONOXIDE FROM ANY ONE OF THESE DEVICES CAN BE INAD-
VERTENTLY DRAWN INTO AND DISTRIBUTED THROUGH THE LIVING
SPACE BY THE NORMAL OPERATION OF THE CENTRAL HEATING / AIR
CONDITIONING SYSTEM (SEE FIGURE 1).
APPLIANCES AND FUEL BURNING DEVICES MUST BE INSTALLED, OPER-
ATED AND MAINTAINED IN ACCORDANCE WITH THE MANUFACTURER'S
INSTRUCTIONS.
GASOLINE-POWERED TOOLS AND MOTOR VEHICLES MUST NOT BE
OPERATED IN ENCLOSED SPACES, SUCH AS BASEMENTS, CRAWL-
SPACES, OR GARAGES, EVEN WITH DOORS AND WINDOWS OR VENTS
OPEN, AS EXHAUST FUMES INCLUDING CARBON MONOXIDE CAN BUILD
UP AND SEEP INTO THE LIVING SPACE THROUGH CRACKS AND OPEN-
INGS IN THE STRUCTURE. TOXIC FUMES, INCLUDING CARBON MONOX-
IDE, CAN ALSO BE DRAWN INTO THE LIVING SPACE THROUGH OPEN-
INGS AND SEAMS IN THE CENTRAL HEATING AND AIR CONDITIONING
EQUIPMENT AND / OR DUCTWORK.
FOR THESE REASONS, THE U.S. CONSUMER PRODUCT SAFETY
COMMISSION (CPSC) RECOMMENDS THAT EVERY HOME HAVE AT
LEAST ONE CARBON MONOXIDE ALARM INSTALLED IN THE HALLWAY
NEAR THE BEDROOMS IN EACH SEPARATE SLEEPING AREA OF THE
HOME. CARBON MONOXIDE ALARMS SHOULD BE CERTIFIED TO THE
REQUIREMENTS OF THE MOST RECENT UL, IAS OR CSA STANDARD,
AND SHOULD BE INSTALLED, OPERATED AND MAINTAINED IN ACCOR-
DANCE WITH THE ALARM MANUFACTURER'S INSTRUCTIONS.
FIGURE 1
MIGRATION OF DANGEROUS SUBSTANCES, FUMES, AND ODORS INTO LIVING SPACES
that carries the cooled or heated air. To
maintain efficiency, comfort and good
indoor air quality, it is important to have
the proper balance between the air
being supplied to each room and the air
returning to the cooling and heating
equipment.
Proper balance and sealing of the duct
system improves the efficiency of the
heating and air conditioning system and
improves the indoor air quality of the
home by reducing the amount of air-
borne pollutants that enter homes from
spaces where the ductwork and / or
equipment is located. The manufacturer
and the U.S. Environmental Protection
Agency's Energy Star Program recom-
mend that central duct systems be
checked by a qualified contractor for
proper balance and sealing.
RECEIVING
Immediately upon receipt, all cartons
and contents should be inspected for
transit damage. Units with damaged car-
tons should be opened immediately. If
damage is found, it should be noted on
the delivery papers, and a damage claim
filed with the last carrier.
• After unit has been delivered to job
site, remove carton taking care not to
damage unit.
• Check the unit rating plate for unit
size, electric heat, coil, voltage,
phase, etc. to be sure equipment
matches what is required for the job
specification.
• Read the entire instructions before
starting the installation.
• Some building codes require extra
cabinet insulation and gasketing when
unit is installed in attic applications.
• If installed in an unconditioned space,
apply caulking around the power
wires, control wires, refrigerant tubing
and condensate line where they enter
the cabinet. Seal the power wires on
the inside where they exit conduit
opening. Caulking is required to pre-
vent air leakage into and condensate
from forming inside the unit, control
box, and on electrical controls.
• Install the unit in such a way as to
allow necessary access to the
coil/filter rack and blower/control com-
partment.
• Install the unit in a level position to
ensure proper condensate drainage.
Make sure unit is level in both direc-
tions within 1/8".
• Install the unit in accordance with any
local code which may apply and the
national codes. Latest editions are
available from: "National Fire
Protection Association, Inc.,
Batterymarch Park, Quincy, MA
02269." These publications are:
• ANSI/NFPA No. 70-(Latest Edition)
National Electrical Code.
• NFPA90A Installation of Air
Conditioning and Ventilating Systems.
• NFPA90B Installation of warm air
heating and air conditioning systems.
• The equipment has been evaluated in
accordance with the Code of Federal
Regulations, Chapter XX, Part 3280.
3
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