Installation, Operation & Maintenance Manual
Bosch 96% AFUE Gas Furnace
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Bosch Thermotechnology Corp.
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04.2019
Data subject to change
WARNING: FOLLOW ALL SAFETY CODES
Wear safety glasses, protective clothing, and work gloves.
Have a fire extinguisher available. Read these instructions
thoroughly and follow all warnings or cautions included in
literature and attached to the unit. Consult local building
codes as well as the current editions of the National Fuel
Gas Code (NFGC) NFPA 54/ANSI Z223.1 and the National
Electrical Code (NEC) NFPA 70.
WARNING: FIRE, EXPLOSION, ELECTRICAL SHOCK, AND
CARBON MONOXIDE POISONING HAZARD
Failure to follow this warning could result in dangerous
operation, serious injury, death, or property damage.
Improper installation, adjustment, alteration, maintenance,
or use could cause carbon monoxide poisoning, explosion,
fire, electrical shock, or other conditions which may cause
personal injury or property damage. Consult a qualified
service agency, local gas supplier, or your distributor for
information or assistance.
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, safety glasses
and gloves when handling parts and servicing furnaces.
CAUTION: INSTALLATION REQUIREMENTS
Use only with type of gas approved for this furnace. Refer to
the furnace rating plate.
Install this furnace only in a location and position as
specified in Section 6 "Location" of these instructions.
Provide adequate combustion and ventilation air to the
furnace space as specified in Section 8.4 "Combustion Air
/ Venting".
Combustion products must be discharged outdoors.
Connect this furnace to an approved vent system only, as
specified in Section 8.5 "Vent System" of this manual.
When a furnace is installed so that supply ducts carry
air circulated by the furnace to areas outside the space
containing the furnace, the return air shall also be handled
by duct(s) sealed to the furnace cabinet and terminating
outside the space containing the furnace. See Section 7.5
"Air Ducts".
A gas-fired furnace for installation in a residential garage
must be installed as specified in the warning box in Section
6 "Location".
The furnace may be used for construction heat provided
that the furnace installation and operation complies with the
first CAUTION in Section 6 "Location" of these instructions.
WARNING: FIRE HAZARD
Always install furnace to operate within the furnace's
intended temperature-rise range with a duct system which
has an external static pressure within the allowable range,
as specified in Section 11 "Start-Up, Adjustments, and
Safety Check" or the furnace rating plate.
WARNING: FIRE HAZARD
The furnaces must be kept free and clear of insulating
materials. Inspect surrounding area to ensure insulation
material is at a safe distance when installing furnaces or
adding insulation materials. Insulation materials may be
combustible.
See Section 3, Fig. 3 for required clearances to combustible
construction.
Maintain a 1 in. clearance from combustible materials to
supply air ductwork for a distance of 36 in. horizontally
from the furnace. See NFPA 90B or local code for further
requirements.
These furnaces SHALL NOT be installed directly on
carpeting, tile, or any other combustible material other than
wood flooring. This furnace SHALL NOT be installed in the
downflow orientation.
NOTICE: FURNACE RELIABILITY HAZARD
Improper installation or misapplication of furnace may
require excessive servicing or cause premature component
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
Check entire gas assembly for leaks after lighting this
appliance.
Never test for gas leaks with an open flame. Use a
commercially available soap solution made specifically
for the detection of leaks to check all connections, as
specified in Section 9 "Gas Supply and Piping" section.
NOTICE:
The condensate from this unit is acidic, ensure that all
local and national codes are adhered to when draining
condensate. If proper procedures are not followed, this
may lead to property damage.
