Location; General; Location Relative To Cooling Equipment; Installation - Carrier 58CLA Installation, Start-Up, And Operating Instructions Manual

Table 1—Minimum Clearances To
Combustible Materials (In.)
UNIT APPLICATION
Furnace
Sides
Supply Plenum and Warm-Air Duct Within 6 ft
of Furnace
Back Service Clearance
Furnace Casing or Plenum
Top
Horizontal Warm-Air Duct Within 6 ft of
Furnace
Bottom*
Horizontally or Below Pipe
Flue
Pipe
Vertically Above Pipe
Front
* Floor may be combustible.
NOTE: Adequate service clearances should be provided over and above these
dimensions as required.

LOCATION

Step 1—General
This furnace is not water tight and is not designed for outdoor
installation. This furnace shall be installed in such a manner
as to protect electrical components from water. Outdoor
installation would lead to a hazardous electrical condition and
to premature furnace failure.
Do not use this furnace as a construction heater. Use of this
furnace as a construction heater exposes furnace to abnormal
conditions, contaminated combustion air, and lack of air
filters. Failure to follow this warning can lead to premature
furnace failure and/or vent failure which could result in a fire
hazard and/or bodily harm.
This furnace is approved for reduced clearances to combustible
construction, therefore, it may be installed in a closet or similar
enclosure. It may be located in a basement or on the same level as
area to be heated. In any case, unit should always be installed level.
The required minimum clearances for this furnace are specified in
Table 1. The furnace should be located as close as possible to
chimney or vent in order to keep vent connections short and direct.
The furnace should also be located as near as possible to center of
air distribution system.
Step 2—Location Relative to Cooling Equipment
When installing furnace with cooling equipment for year-round
operation, the following recommendations must be followed for
series or parallel airflow:
1. In series airflow applications, coil is mounted after furnace in
an enclosure in supply-air stream. The furnace blower used for
both heating and cooling airflow.
The coil MUST be installed on air discharge side of furnace.
Under no circumstances should airflow be such that cooled,
LOW-BOY
conditioned air can pass over furnace heat exchanger. This
1
will cause condensation in heat exchanger and possible
1
failure of heat exchanger which could lead to a fire hazard
and/or a hazardous condition which may lead to bodily harm.
19
Heat exchanger failure due to improper installation may not
2
be covered by warranty.
2
2. In parallel airflow applications, dampers must be provided to
0
direct air over furnace heat exchanger when heat is desired and
4
over cooling coil when cooling is desired.
9
IMPORTANT: The dampers should be adequate to prevent cooled
8
air from entering furnace. If manually operated, dampers must be
equipped with a means to prevent operation of either cooling unit
or furnace unless damper is in full cool or heat position.
Step 1—Air for Combustion and Ventilation
Installation of this furnace in an area where it will receive
contaminated combustion air must be avoided. Such contami-
nation would include the following: ammonia, chlorine,
hydrogen sulfide, halogenated hydrocarbons, carbon tetra-
chloride, cleaning solvents, hydrochloric acid, water soften-
ing chemicals, and similar chemicals. Failure to follow this
warning will lead to premature rusting of heat exchanger and
possible premature furnace failure and/or vent failure which
could result in fire hazard and/or bodily harm.
Do not block combustion-air openings in the furnace. Any
blockage will result in improper combustion which may result
in a fire hazard and/or cause bodily harm.
Step 2—General
This furnace should be installed in a location in which facilities for
ventilation permit satisfactory combustion of oil, proper venting,
and maintenance of ambient temperature at safe limits under
normal conditions of use. The location should not interfere with
proper circulation of air within the confined space. (See NFPA-31,
Section 1.5.)
In addition to air needed for combustion, process air shall be
provided as required for: cooling of equipment or material,
controlling dew point, heating, drying, oxidation or dilution, safety
exhaust, and odor control.
In addition to air needed for combustion, air shall be supplied for
ventilation, including all air required for comfort and proper
working conditions for personnel.
The barometric draft regulator (included with furnace) shall be
installed in same room or enclosure as furnace in such a manner as
to prevent any difference in pressure between regulator and
combustion-air supply.
Air requirements for operation of exhaust fans, kitchen ventilation
systems, clothes dryers, and fireplaces shall be considered in
determining the adequacy of a space to provide combustion-air
requirements.
The lack of a proper amount of combustion air can lead to serious
furnace operational problems. Some of these problems are:
1. Excessive oil burner after drip and oil fumes.
2. Sooting.
3

INSTALLATION