Advertisement
SAFETY
CONSIDERATIONS
Installing
and servicing
of 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
flmctions
such
as cleaning
and replacing
air filters.
All other operations
must
be
performed
by trained service personnel.
Observe
safety precautions
in this manual,
on tags, and on labels
attached to the furnace
and
other safety precautions
that may apply.
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,
CAUTION,
and NOTE.
DANGER,
WARNING,
and CAUTION
are used with
the
safety-alert
symbol.
DANGER
identifies
the
most
serious
hazards
which
will
result
in severe
personal
injury
or death.
WARNING
signifies
hazards
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.
To minimize
the possibility
of serious
personal
injury, fire, damage
to your
furnace,
or improper
operation,
carefully
follow
these
safety
rules
which
apply
to both
direct-vent
and non-direct
vent
applications:
• Your new gas furnace may have been installed in one of two
ways, as a direct- vent (2- pipe- Fig. 2) application
or as a
non- direct vent (1- pipe- Fig. 3) application.
• In a direct- vent (2- pipe) application,
your furnace uses air
from outside the home for combustion
and vents flue gas to the
outdoors.
This type of application
will have two pipes running
from the furnace
to the outdoors.
In some cases, the inlet air pipe
may be located
in an area that has access to outdoor air, such as
an attic. In all cases, the outlet vent pipe must be routed to the
outdoors.
(See Fig. 2.) In this application,
the vent and
air- intake
pipes nmst terminate
outside the structure
and must
not be obstructed in any way. Do not block or obstruct air
openings
on furnace or spaces around
furnace.
• In a non- direct vent (1- pipe) application,
your furnace uses
air from adjacent
to the furnace
for combustion
and vents flue
gas to the outdoors.
This type of application
will have only one
pipe running
from the furnace
to the outdoors. (See Fig. 3.) The
other pipe will terminate
in the same space as the furnace
and is
the source of combustion
air for your furnace.
Therefore,
the
furnace must not be enclosed
in an airtight
room or be sealed
behind
solid doors. It must have adequate
airflow for efficient
combustion
and safe ventilation.
Do not obstruct the
combustion-
air pipe in any way. The vent pipe nmst terminate
outside the structure
and must not be obstructed in any way. Do
not block
or obstruct air openings
or space around
furnace.
FIRE
OR EXPLOSION
HAZARD
Failure
to follow
warnings
could
result
in personal
injury,
death, or property
damage.
Keep
insulation
clear
of furnace
and
maintain
clearances
shown
on unit clearance
label.
Do
not
keep
combustible
materials,
gasoline,
and
other
flammable
liquids or vapors around
your furnace.
\\
Fig. 2 - Exterior
Vent Pipes
Al1303
\
Fig. 3 - Interior
Combustion
- Air Pipe
Al1304
Advertisement
