Check Safhty Controls 45
Check Prima_ Limit Control 45
Check Pressure Switch 45
CHECKLIST ...................................... 45
SAFETY CONSIDERATIONS
FURNACE RELIABILITY HAZARD
Improper installation or misapplication of fml_ace may re=
quire excessive servicing o1" cause premature component
failm'e
Application of this fm'nace should be indoors with special
attention given to vent sizing and material, gas input rate, air
temperature rise, unit leveling, and unit sizing.
FIRE, EXPLOSION, ELECTRICAL SHOCK AND
CARBON MONOXIDE POISONING HAZARD
Failure to follow this warning could result in electrical shock,
firQ personal ir!inry, or death,
Improper installation, adjustment, alteration, service, mainte°
nance, or use can cause carbon monoxide poisoning, explo=
sion, fire, electrical shock, or other conditions which may
cause personal Jr!ire'y.,-or property damage. Consult a qualified
installer, smwice agency, local gas supplier, or your distribu-
tor or branch fbr information or assistance. The qualified
installer or agency must use only [itctory=authorized and
listed kits or accessories when modi_)ing this product.
Installing and servicing heating equipment can be hazardous due to
gas and electrical components. Only trained and qualified
persomiel should instMl, repair, or service heating equipment.
Untrained personnel can perform basic maintenance fimctions
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 confoml
to existing national standards and safkty codes In some instances,
these instructions exceed certain local codes and ordinances,
especially those that may not have kept up with changing resider>
tial construction practices. We require these instrnctions as a
minimum ibr a saf_ installation
Wear safety glasses and work gloves. Have a fire extinguisher
available during start=up and adjustment procedures and service
calls,
CUT HAZARD
Failure to %tlow this caution may result in personal injury.
Sheet metal parts may have sharp edges or bun's Use care and
wear appropriate protective clothing and gloves when ban=
dling parts.
Recognize safety information. This is the safety=alert symbol Z_
When you see this symbol on the unit and in instructions or
manuals, be alert to the potential for personal injury.
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Understand these signal words DANGER, WARNING, and (AU°
TION These words are used with the safkty=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 ma? 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.
The 58MSA Muhipoise Condensing Gas-Fired Furnaces are CSA
(fbm_erly AGA and (GA) design-certified for natural and propane
gases (see ftmmce rating plate) and fbr installation in alcoves,
attics, basements, closets, utility rooms, erawlspaces, and garages.
The fi/rnace is factory=shipped fbr use with natural gas. A CSA
listed gas conversion kit is required to convert furnace for use with
propane gas.
See Fig. 3 for required clearances to combustibles.
Maintain a l-in. clearance fiom combustible materials to supply air
ductwork for a distance of 36 inches horizontally fiom the fimaace.
See NFPA 90B or local code fbr further requirements.
These furnaces SHALL NOT be installed directly on carpeting,
tile, or any other combustible material other than wood flooring. In
downflow installations, factory accessow floor base MUST be
used when installed on combustible materials and wood flooring.
Special base is not required when this Nmace is installed on
manufacturer's (:oil Assembly Part No. CD5 or CK5, or when Coil
Box Part No. KCAKC is used. The design of this fi/rnace line is
NOT CSA (formerly AGA and CGA) designocertified fbr instal-
lation in recreation vehicles, manufi_ctured mobile homes, or
outdoors.
This furnace is designed for continuous return-air mininmm
temperature of 60_>F db or intermittent operation down to 55°F db
such as when used with a night setback thermometer. 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.)
These Nrnaces are shipped with the drain and pressure robes
connected for UPFLOW applications. Minor modifications are
required when used in DOWNFLOW, HORIZONTAL RIGHT, or
HORIZONTAL LEFT (supply=air discharge direction) applica-
tions as shown in Fig. 1. See details in Applications section.
Install this Nmace only in a location and position as specified in
LOCATION and INSTALLATION sections of these instnlctions.
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 d_ese instructions.
Never test for gas leaks with an open flame. Use a commercially
available soap solution made specifically for detection of leaks to
check all connections as specified in the GAS PIPING section of
these instructions.
Always install the furnace to operate within the fitrnace's intended
rise range with a duct system which has an external static pressure
within the allowable range as specified in the SET TEMPERA-
TURE RISE section of these instructions.
When a Nrnace is installed so that supply ducts carry air circulated
by tl_e fi/rnace to areas outside the space containing the f:umace,
the return air shall also be handled by ducts sealed to the Nrnace
casing and terminating outside the space containing the fhrnace.
