4
SAFETY CONSIDERATIONS
FURNACE RELIABILITY HAZARD
Improper installation or misapplication of furnace may
require excessive servicing or cause premature component
failure.
Application of this furnace should be indoors with special
attention given to vent sizing and material combustion air
requirements, gas input rate, air temperature rise, unit
leveling, and unit sizing.
CAUTION
!
FIRE, EXPLOSION, ELECTRICAL SHOCK AND
CARBON MONOXIDE POISONING HAZARD
Failure to follow this warning could result in electrical shock,
fire, personal injury, or death.
Improper installation, adjustment, alteration, service,
maintenance, or use can cause carbon monoxide poisoning,
explosion, fire, electrical shock, or other conditions which
may cause personal injury or property damage. Consult a
qualified installer, service agency, local gas supplier, or your
distributor or branch for information or assistance. The
qualified
installer
or
agency
must
use
only
factory--authorized and listed kits or accessories when
modifying this product.
!
WARNING
Installing and servicing heating equipment can be hazardous due to
gas and electrical components.
Only trained and qualified
personnel should install, repair, or service heating equipment.
Untrained personnel can perform basic maintenance functions such
as cleaning and replacing air filters. All other operations must be
performed by trained service personnel. When working on heating
equipment, observe precautions in literature, on tags, and on labels
attached to or shipped with unit and other safety precautions that
may apply.
These instructions cover the minimum requirements and conform
to existing national standards and safety codes. In some instances,
these instructions exceed certain local codes and ordinances,
especially those that may not have kept up with changing
residential construction practices. We require these instructions as a
minimum for a safe installation.
Follow all safety codes. Wear safety glasses, protective clothing,
and work gloves. Have a fire extinguisher available. Read these
instructions
thoroughly and follow all warnings or cautions
include in literature and attached to the unit. Consult local building
codes, the current editions of the National Fuel Gas Code (NFGC)
NFPA 54/ANSI Z223.1 and the National Electrical Code (NEC)
NFPA 70.
In Canada, refer to the current editions of the National Standards of
Canada CAN/CSA--B149.1 and .2 Natural Gas and Propane
Installation Codes, and Canadian Electrical Code CSA C22.1
Wear safety glasses and work gloves. Have a fire extinguisher
available during start--up and adjustment procedures and service
calls.
Recognize safety information. This is the safety--alert symbol
.
When you see this symbol on the furnace and in instructions or
manuals, be alert to the potential for personal injury.
Understand the signal words DANGER, WARNING, and
CAUTION. These words are used with the safety--alert symbol.
DANGER identifies the most serious hazards which
will
result in
severe personal injury or death. WARNING signifies a hazard
which
could
result in personal injury or death. CAUTION is used
to identify unsafe practices which
may
result in minor personal
injury or product and property damage. NOTE is used to highlight
suggestions which
will
result in enhanced installation, reliability, or
operation.
CUT HAZARD
Failure to follow this caution may result in personal injury.
Sheet metal parts may have sharp edges or burrs. Use care
and wear appropriate protective clothing and gloves when
handling parts.
CAUTION
!
The 355BAV Condensing Gas--Fired Furnaces are CSA (formerly
AGA and CGA) design--certified for natural and propane gases
(see furnace rating plate) and for installation in alcoves, attics,
basements, closets, utility rooms, crawlspaces, and garages. The
furnace is factory--shipped for use with natural gas. A CSA listed
gas conversion kit is required to convert furnace for use with
propane gas.
See Fig. 3 for required clearances to combustibles.
Maintain a 1--in. (25 mm) clearance from combustible materials to
supply air duct work for a distance of 36 inches horizontally from
the furnace. See NFPA 90B or local code for further requirements.
These furnaces SHALL NOT be installed directly on carpeting,
tile, or any other combustible material other than wood flooring.
These furnaces are suitable for installation in a structure built on
site or a manufactured building completed at final site. The design
of this furnace line is NOT CSA design--certified for installation in
recreation vehicles, manufactured (mobile) homes or outdoors.
This furnace is designed for continuous return--air minimum
temperature of 60
_
F db or intermittent operation down to 55
_
F db
such as when used with a night setback thermostat. Return--air
temperature must not exceed 80
_
F db. Failure to follow these
return air limits may affect reliability of heat exchangers, motors
and controls. (See Fig. 4.)
These furnaces are shipped for UPFLOW applications ONLY. See
details in Applications section.
Install this furnace only in a location and position as specified in
LOCATION and INSTALLATION sections of these instructions.
Combustion products must be discharged outdoors. Connect this
furnace to an approved vent system only, as specified in the
Combustion Air and Vent piping sections of these instructions.
Never test for gas leaks with an open flame. Use a commercially
available soap solution made specifically for detection of leaks to
check all connections as specified in the GAS PIPING section of
these instructions.
Always install the furnace to operate within the furnace’s intended
rise range with a duct system which has an external static pressure
within the allowable range as specified in the SET
TEMPERATURE RISE section of these instructions.
When a furnace is installed so that supply ducts carry air circulated
by the furnace to areas outside the space containing the furnace, the
return air shall also be handled by ducts sealed to the furnace
casing and terminating outside the space containing the furnace.
355B
A
V
