SAFETY CONSIDERATIONS
CAUTION:
FURNACE RELIABILITY HAZARD
Improper installation or misapplication of furnace may
require excessive servicing or cause premature compo-
nent failure.
Application of this furnace should be indoors with special
attention given to vent sizing and material, gas input rate,
air temperature rise, unit leveling, and unit sizing.
WARNING:
FIRE,
EXPLOSION,
ELECTRICAL
SHOCK AND CARBON MONOXIDE POISONING
HAZARD
Failure to follow this warning could result in electrical
shock, fire, personal injury, or death.
Improper installation, adjustment, alteration, service,
maintenance, or use can cause carbon monoxide poison-
ing, explosion, fire, electrical shock, or other conditions
which may cause personal injury or property damage.
Consult a qualified installer, service agency, local gas
supplier, or your distributor or branch for information or
assistance. The qualified installer or agency must use
only factory-authorized and listed kits or accessories
when modifying this product.
Installing and servicing 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 functions
such as cleaning and replacing air filters. All other operations must
be performed by trained service personnel. When working on
heating equipment, observe precautions in literature, on tags, and
on labels attached to or shipped with unit and other safety
precautions that may apply.
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.
CAUTION:
CUT HAZARD
Failure to follow this caution may result in personal
injury.
Sheet metal parts may have sharp edges or burrs. Use care
and wear appropriate protective clothing and gloves when
handling parts.
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 CAU-
TION. These words are used with the safety-alert symbol. DAN-
GER 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.
INTRODUCTION
The model 352MAV, 2-Stage, 4-way multipoise, Gas-Fired, Cat-
egory IV, direct vent condensing furnace is available in model
sizes ranging in input capacities (high-stage) of 60,000 to 120,000
Btuh. This furnace is CSA (formerly AGA and CGA) design-
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
CSA 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 manufacturer’s coil box
is used. The design of the 352MAV furnace is not CSA 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
such as when used with a night setback thermostat. Return-air
temperature must not exceed 80°F db. Failure to follow these
return air limits may affect reliability of heat exchangers, motors
and controls. (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.
•
Install this furnace in a location and position as specified in
LOCATION and INSTALLATION sections of these instruc-
tions.
•
Combustion products must be discharged outdoors. Connect
this furnace to an approved vent system only, as specified in the
Combustion Air and Vent piping sections of these instructions.
•
Never test for gas leaks with an open flame. Use a commer-
cially available soap solution made specifically for the detec-
tion of leaks to check all connections, as specified in the GAS
PIPING section of these instructions.
Fig. 1—Multipoise Orientations
A93041
UPFLOW
DOWNFLOW
HORIZONTAL
LEFT
AIRFLOW
AIRFLOW
AIRFLOW
AIRFLOW
HORIZONTAL
RIGHT
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Содержание CONDENSING GAS FURNACE 352MAV
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