3
Safety
When the furnace is heating, the temperature of
the return air entering the furnace must be be-
tween 55°F and 100°F.
If the furnace is installed near an area which will be
frequently contaminated by permanent wave solu-
tions, chlorinated waxes or cleaners, chlorine based
swimming pool chemicals, water softening chemi-
cals, de-icing salts or chemicals, carbon tetrachlo-
ride, halogen type refrigerants, cleaning solutions
(such as perchloroethylene), printing inks, paint
removers, varnishes, hydrochloric acid, cements
and glues, antistatic fabric softeners for clothes
dryers, and masonry acid washing materials, the
furnace should be sealed from this area so that no
contaminated air can reach the furnace. The fur-
nace must still have an adequate supply of com-
bustion air, either from a nearby uncontaminated
room or from outdoors. For details, see AIR RE-
QUIREMENTS Section III.
Provisions must be made for intake of combustion
air (GUD) and venting combustion products out-
doors through proper venting systems. The length
of combustion air pipe (GUD) and flue pipe could
be a limiting factor in locating the furnace. See
Sections III and IV.
Allow clearances from the enclosure as shown on
Specification sheet for fire protection, proper op-
eration, and service access. These clearances must
be permanently maintained. The combustion and
ventilating air openings in the front and top panels
of the furnace must never be obstructed.
When the furnace is used in connection with a
cooling unit, the furnace must be upstream of, or in
parallel with, the cooling unit. For details see Sec-
tion VlI.
This furnace produces condensate as it operates.
Do not locate the furnace or its condensate drain-
age system in an area subjected to below freezing
temperatures.
I. Safety and Unit Location
WARNING
To prevent personal injury or death due
to improper installation, adjustment, al-
teration, service or maintenance, refer
to this manual or for additional assis-
tance or information consult a qualified
installer, service agency or the gas sup-
plier.
WARNING
This product contains or produces a
chemical or chemicals which may cause
serious illness or death and which are
known to the State of California to cause
cancer, birth defects or other reproduc-
tive harm.
WARNING
To prevent possible death, personal in-
jury or equipment damage due to fire,
the following points must be observed
when installing the unit.
WARNING
To prevent possible death, personal in-
jury or property damage due to electri-
cal shock, the furnace must be located
to protect the electrical components
from water.
CAUTION
This unit must not be used as a
construction heater during the finish-
ing phases of construction on a new
structure. This type of use may result in
premature failure of the unit due to ex-
tremely low return air temperatures and
exposure to corrosive or very dirty at-
mospheres.
