1.
General Guidelines
A. Select a location where the exhaust and combustion air pip-
ing can be routed between the furnace and their termina-
tions with a minimum of lengths and fi ttings. Be sure to
check that the proposed termination location will meet
code requirements with respect to location and minimum
clearances. (See venting section for minimum and maxi-
mum limits.)
B. Select a location as near as possible to the existing or pro-
posed duct system.
C. Th
e furnace location must have provisions for condensate
drainage. If a suitable drain is unavailable near the furnace,
a condensate pump must be used. Th
e condensate pump
drain tubing must not terminate outdoors; similar to some
air conditioning condensate installations. Be sure to select
a condensate pump that has been approved for furnace
condensate applications.
D. Th
e furnace location must permit access for servicing
and be within the clearance to combustibles guidelines as
marked on the appliance rating plate.
E. Th
e furnace must be installed level to allow for the proper
drainage of condensate. Th
e furnace may shut down during
winter operation if the condensate does not drain freely
away from the furnace.
F. Th
e furnace should be installed on a fi rm base when in-
stalled in the upfl ow position. Th
is would typically be the
concrete fl oor if installing the furnace in a basement.
G. If the furnace is being installed so that the return air will
enter through the bottom, the perimeter of the furnace
must be properly supported.
H. When installed in the horizontal position, the furnace may
be supported from the bottom, or suspended. (Figure 3)
I. If the furnace is to be installed in a commercial (repair) ga-
rage, the burners and ignition source must be a minimum
of 4½ feet (1375 mm) above the fl oor. Th
e furnace must be
protected from physical damage by metal barriers or other
acceptable means.
2.
Other considerations
A. If the furnace is to be located in an area where the combus-
tion air is laden with chemical compounds such as bro-
mine, chlorine or fl uorine, as may be found in swimming
pool chemicals, laundry detergents, etc., use outdoor air
for combustion. Th
ese compounds when exposed to fl ame,
form acids which attack the heat exchanger and other com-
ponents. A partial list of contaminants would include:
• Aerosols, particularly CFC based aerosols
• Air fresheners
• “Airplane” glue and similar cements
• Ammonia, as is commonly found in permanent wave solu-
tions used in women’s hair dressing salons
• Anti-static fabric soft eners used in clothes dryers
• Carbon tetrachloride
• Chlorinated cleaners and waxes
• Chlorine and bromine based swimming pool chemicals
and treatments
• De-icing salts or chemicals, rock salt, etc.
• Dry cleaning solutions such as perchloroethylene
• Halogen based refrigerants including R-12 and R-22
• Hydrochloric acid, muriatic acid, or other acid based ma-
sonry washing compounds
• Polyurethane and similar derivatives fumes
• Printer’s inks, paint removers, furniture strippers, varnish-
es, varsol, toluene, etc.
• Water soft ener salts and chemicals
NOTICE
IMPORTANT: Th
is furnace is not to be used for tempo-
rary heating of buildings or structures under construction.
5 - LOCATION OF UNIT
Figure 4 - Suggested Method For Suspending Horizontal Furnace
10
