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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 in a manufactured (mobile) home when stated on rating plate and using factory
authorized kit.
This furnace may be installed on combustible flooring in alcove or closet at minimum clearance from combustible material.
This appliance requires a special venting system. Refer to the installation instructions for parts list and method of installation. This furnace is for use with schedule-40 PVC, PVC-
DWV, CPVC, or ABS-DWV pipe, and must not be vented in common with other gas-fired appliances. Construction through which vent/air intake pipes may be installed is maximum 24
inches (600 mm), minimum 3/4 inches (19 mm) thickness (including roofing materials).
Furnace must be installed level, or pitched forward within 1/2 inch of level for proper
drainage. Failure will result in equipment or property damage. See Installation
Manual for IMPORTANT unit support details on horizontal applications.
MINIMUM INCHES CLEARANCE TO COMBUSTIBLE CONSTRUCTION
ALL POSITIONS:
*
Minimum front clearance for service 30 inches (762mm).
DOWNFLOW POSITIONS:
Ü
For installation on combustible floors only when installed on special base No. KGASB0201ALL, Coil
Assembly, Part No. CD5 or CK5, or Coil Casing, Part No. KCAKC.
HORIZONTAL POSITIONS:
Line contact is permissible only between lines formed by intersections of top and two sides of furnace
jacket, and building joists, studs, or framing.
ß
Clearance shown is for air inlet and air outlet ends.
120 size furnaces require 1 inch bottom clearance to combustible materials.
ÿ
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 residen-
tial construction practices. We require these instructions as a
minimum for a safe installation.
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 unit and in instructions or
manuals, be alert to the potential for personal injury.
Understand these 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 hazards
which could result in personal injury or death. CAUTION is used
to identify unsafe practices which would 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
INTRODUCTION
The model 352MAV Series A, 2-Stage, 4-way multipoise, Gas-
Fired , Category IV, direct vent condensing furnace is available in
model sizes ranging in input capacities (high-stage) of 60,000 to
INSTALLATION
LEVEL (0")
TO
1/2" MAX
UPFLOW OR
DOWNFLOW
326476-201 REV. B (lit-top)
Fig. 3—Clearances to Combustibles
120,000 Btuh. This furnace is C.S.A. (A.G.A. and C.G.A.)
certified for natural and propane gases and for installation in
alcoves, attics, basements, closets, utility rooms, crawlspaces, and
garages. This furnace is factory-shipped for use with natural gas. A
C.S.A. (A.G.A. and C.G.A.) listed gas conversion kit is required to
convert furnace for use with propane gas.
This furnace shall not be installed directly on carpeting, tile, or
any other combustible material other than wood flooring. For
downflow installations, a factory accessory floor base must be
.
used when installed on combustible materials and wood flooring.
Special base is not required when this furnace is installed on the
manufacturer's coil assembly or when the manufacture's coil box
is used. The design of the 352MAV furnace is not C.S.A. (A.G.A.
and C.G.A.) certified for installation in mobile homes, recreational
vehicles, or outdoors. This furnace is suitable for installation in a
structure built on site or a manufactured building completed at
final site.
This furnace is designed for minimum continuous return-air
temperature of 60 °F db or intermittent operation down to 55°F db.
Return-air temperature must not exceed 85°F db. See Fig. 4.
This furnace is shipped with the drain and pressure tubes con-
nected for UPFLOW applications. Minor modifications are re-
quired when used in DOWNFLOW, HORIZONTAL RIGHT,
or HORIZONTAL LEFT (supply-air discharge direction) appli-
cations as shown in Fig. 1. See details in Applications section.
—3—
LEVEL (0")
TO
1/2" MAX
FRONT
FRONT
This furnace is approved for UPFLOW, DOWNFLOW and
HORIZONTAL installations.
Clearance arrows do
1"
not change with
furnace orientation.
0"
B
A
C
K
F
R O
N T
0"
ß
0"
Clearance in inches
ÿ
Ü
HORIZONTAL
ß
0"
S E
R V
I
C
E
*
30
MIN
3"
Vent clearance to
combustibles 0".
A01049
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