2
SAFETY CONSIDERATIONS
Improper installation, adjustment, alteration, service,
maintenance, or use can cause explosion, fire, electrical
shock or other c onditions which may cause personal
injury or property damage. Consult a qualified installer,
service agenc y, or your distribut or or branch for
information or assistance. The qualified installer or
agency must use factory--authorized kits or accessories
when modifying this product. Refer to the individual
instructions packaged with the kits or accessories when
installing.
Follow all safety codes. Wear safety glasses and work
gloves. Use quenching cloths for brazi ng operations and
have a fire extinguisher available. Read these i nstructions
thoroughly and follow all warnings or cautions attac hed to
the unit. Consult local building codes and appropriate
national electrical codes (in USA, ANSI/NFPA70,
Nationa l Electrical Code (NEC); in Canada, CSA C22.1)
for special requirements.
It is important to recognize safet y 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 the signal words DANGER, WARNING,
CAUTION, and NOTE. 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 identi fy
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.
FIRE, EXPLOSION HAZARD
Failure to follow this warning could result in personal
injury or death.
Disconnect gas piping from unit when leak testing at
pressure greater than 0.5 psig (3450 Pa). Pressures
great er than 0.5 psig (3450 Pa) will cause gas valve
damage resulting in hazardous condition. If gas valve
is subjected to pressure greater than 0.5 psig (3450
Pa), it must be replaced before use. When pressure
testing field--supplied gas piping at pressures of 0.5
psig (3450 Pa) or less, a unit connected to such piping
must be isolated by closing the manual gas valve.
!
WARNING
FIRE HAZARD
Failure to follow this warning could result in personal
injury, death, and/or property damage.
Inlet pressure tab set screw must be tightened and
1
/
8
in.
NPT pipe plug must be installed to prevent gas leaks.
!
WARNING
GAS VALVE
INLET PRESSURE
TAP SET SCREW
FIRE HAZARD
Failure to follow this warning could result in personal
injury, death, and/or property damage.
Manifold pressure t ap set screw must be tightened and
1
/
8
in. NPT pipe plug must be install ed to prevent gas
leak.
!
WARNING
MANIFOLD
GAS VALVE
MANIFOLD PRESSURE
TAP SET SCREW
CARBON--MONOXIDE POISONING HAZARD
Failure to foll ow instructi ons c ould result in severe
personal injury or death due to carbon--monoxide
poisoning, if combustion products infiltrate into t he
building.
Check that all openings in the outside wall around the
vent (and air intake) pipe(s) are sealed to prevent
infiltration of combustion products into the building.
Check that furnace vent (and air intake) terminal(s)
are not obstructed in any way during all seasons.
!
WARNING
582J
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