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INTRODUCTION
The model 58ZAV Series 151 and 161 Furnaces are available in
sizes 46,000 through 135,000 Btuh input capacities.
The design of the downflow/horizontal gas-fired furnace is CSA
(A.G.A. and C.G.A.) certified for natural and propane gases and
for installation on noncombustible flooring. The furnace is factory-
shipped for use with natural gas. A factory accessory gas conver-
sion kit, as listed on the furnace rating plate is required to convert
furnace for use with propane gas.
These furnaces SHALL NOT be installed directly on carpeting,
tile, or any other combustible material other than wood flooring. In
downflow installations, a factory accessory floor base, as listed on
the furnace rating plate MUST be used when installed on com-
bustible materials and wood flooring. A factory base is not
required when this furnace is installed on manufacturer’s Coil
Assembly Part No. CD5 or CK5, or when Coil Box Part No.
KCAKC is used. This furnace is for installation in alcoves, attics,
crawlspaces, basements, closets, or utility rooms. The design of
this furnace line is not CSA (A.G.A. and C.G.A.) certified for
installation in mobile homes, recreation vehicles, or outdoors.
Before installing the furnace in the United States, refer to the
current edition of the NFGC and the NFPA 90B. For further
information, the NFGC and NFPA 90B are available from Na-
tional Fire Protection Association Inc., Batterymarch Park,
Quincy, MA 02269; or the American Gas Association, 400 N.
Capitol St., NW, Washington DC 20001.
Before installing the furnace in Canada, refer to the current edition
of the NSCNGPIC. For a copy of the NSCNGPIC, contact
Standard Sales, CSA International, 178 Rexdale Boulevard, Eto-
bicoke (Toronto), Ontario, M9W 1R3, Canada.
Installation must comply with regulations of serving gas supplier
and local building, heating, plumbing or other codes in effect in the
area in which installation is made. In absence of local building
codes, installation must conform with NFGC in the United States
and the NSCNGPIC and all authorities having jurisdiction in
Canada.
These instructions cover minimum requirements for a safe instal-
lation 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 pace with
changing residential construction practices. We require these
instructions as a minimum for a safe installation.
Application of this furnace should be indoors with special
attention given to vent sizing and material, gas input rate, air
temperature rise, and unit sizing. Improper installation or
misapplication of the furnace can require excessive servicing
or cause premature component failure.
NOTE: These furnaces are designed for a minimum continuous
return-air temperature of 60°F or intermittent operation down to
55°F such as when used with a night setback thermostat. Return-air
temperature must not exceed a maximum of 85°F. Failure to
follow these return-air temperature limits may affect reliability of
heat exchangers, motors, and controls.
Fig. 2—Clearances to Combustibles
A99262
322286-101 REV. F (LIT)
MINIMUM INCHES CLEARANCE TO COMBUSTIBLE CONSTRUCTION
This forced air furnace is equipped for use with natural
gas at altitudes 0-10,000 ft (0-3,050m).
An accessory kit, supplied by the manufacturer,shall be
used to convert to propane gas use or may be required for
some natural gas applications.
This furnace is for indoor installation in a building
constructed on site.
This furnace may be installed on combustible flooring in
alcove or closet at minimum clearance from combustible
material.
This furnace may be used with a Type B-1 Vent and may
be vented in common with other gas-fired appliances.
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For installation on non-combustible floors only.
For installation on combustible flooring only when
installed on special base, Part No. KGASB0201ALL,
Coil Assembly, Part No. CD5 or CK5, or Coil Casing,
Part No. KCAKC.
For furnaces wider than 14.25 inches (362mm) may
be 0 inches.
18 inches front clearance required for alcove.
Indicates supply or return sides when furnace is in
the horizontal position. Line contact only permissible
between lines formed by intersections of the Top and
two Sides of the furnace jacket, and building joists,
studs or framing.
For single wall vent type 6 inches.
ForTypeB-1venttype3inches.
Clearance to Back 0 inches in downflow and
horizontal (attic/alcove & crawlspace) positions and
3 inches in horizontal closet positions.
#
Clearance in inches
Clearance arrows
do not change with
furnace orientation.
1
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1" #
0"
1"
1"
30"
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Vent Clearance to combustibles:
For Single Wall vents 6 inches.
For Type B-1 vent type 1 inch .
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This furnace is approved for DOWNFLOW and HORIZONTAL
installations.
BOTTOM
TOP /PLENUM
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