6
Varnishes
Hydrochloric acid
Cements and glues
Antistatic fabric softeners for clothes dryers
Masonry acid washing materials
•
Seal off a
non-direct vent
furnace if it is installed
near an area frequently contaminated by any of
the above substances. This protects the
non-
direct vent
furnace from airborne contaminants. To
ensure that the enclosed
non-direct
vent
furnace
has an adequate supply of combustion air, vent
from a nearby uncontaminated room or from
outdoors. Refer to the
Combustion and Ventilation
Air Requirements
for details.
•
If the furnace is used in connection with a cooling coil
unit, install the furnace upstream or in parallel with the
cooling coil unit. Premature heat exchanger failure will
result if the cooling unit is placed ahead of the furnace.
For vertical (upflow) applications, the minimum
cooling coil width shall not be less than furnace
width minus 1”. Additionally, a coil installed above
an upflow furnace may be the same width as the
furnace or may be one size larger than the furnace.
Example: a “C” width coil may be installed with a “B”
width furnace.
For upflow applications, the front of the coil and
furnace must face the same direction.
•
If the furnace is installed in a residential garage,
position the furnace so that the burners and ignition
source are located not less than 18” above the
floor. Protect the furnace from physical damage by
vehicles.
•
If the furnace is installed horizontally, ensure the
access doors are not on the “up/top” or “down/
bottom” side of the furnace.
•
Do not connect this furnace to a chimney flue that
serves a separate appliance designed to burn solid
fuel.
Clearances and Accessibility
Clearance in accordance with local installation codes, the
requirements of the gas supplier and the manufacturer’s
installation instructions.
Dégaugement conforme aux dodes d’installation locaux,
aux exigences du fournisseur de gaz et aux instructions
d’installation du fabricant.
NOTES:
•
For servicing or cleaning, a 24” front clearance is
required.
•
Unit connections (electrical, flue and drain) may
necessitate greater clearances than the minimum
clearances listed above.
•
In all cases, accessibility clearance must take
precedence over clearances from the enclosure
where accessibility clearances are greater.
P
OSSIBLE
PROPERTY
DAMAGE
,
PERSONAL
INJURY
OR
DEATH
DUE
TO
FIRE
,
EXPLOSION
,
SMOKE
,
SOOT
,
CONDENSATION
,
ELECTRICAL
SHOCK
OR
CARBON
MONOXIDE
MAY
RESULT
FROM
IMPROPER
INSTALLATION
,
REPAIR
OPERATION
,
OR
MAINTENANCE
OF
THIS
PRODUCT
.
WARNING
• Centrally locate the furnace with respect to the
proposed or existing air distribution system.
•
Ensure the temperature of the return air entering the
furnace is between 55°F and 100°F when the furnace
is heating.
•
Provide provisions for venting combustion products
outdoors through a proper venting system. Special
consideration should be given to vent/flue pipe routing
and combustion air intake pipe when applicable.
Refer to
Vent/Flue Pipe and Combustion Air Pipe
-Termination Locations
for appropriate termination
locations and to determine if the piping system from
furnace to termination can be accomplished within
the guidelines given.
NOTE:
The length of flue and/
or combustion air piping can be a limiting factor in
the location of the furnace.
•
Locate the furnace so condensate flows downwards
to the drain. Do not locate the furnace or its
condensate drainage system in any area subject to
below freezing temperatures without proper freeze
protection. Refer to
Condensate Drain Lines and
Trap
for further details.
•
Ensure adequate combustion air is available for the
furnace. Improper or insufficient combustion air
can expose building occupants to gas combustion
products that could include carbon monoxide. Refer
to
Combustion and Ventilation Air Requirements.
•
Set the furnace on a level floor to enable proper
condensate drainage. If the floor becomes wet or
damp at times, place the furnace above the floor on
a concrete base sized approximately 1-1/2” larger
than the base of the furnace. Refer to the
Horizontal
Applications and Considerations
for leveling of
horizontal furnaces.
•
Ensure upflow or horizontal furnaces are not installed
directly on carpeting, or any other combustible material.
The only combustible material allowed is wood.
•
Exposure to contaminated combustion air will result
in safety and performance-related problems. Do
not install the furnace where the combustion air is
exposed to the following substances:
Permanent wave solutions
Chlorinated waxes or cleaners chlorine-based
Carbon tetrachloride
Water softening chemicals
Swimming pool chemicals
Deicing salts or chemicals
Halogen type refrigerants
Printing inks
Cleaning solutions (such as perchloroethylene)
Paint removers
