Bryant Bruant 4 Way Gas 355AAV - Manual (Page 17)

17
UNIT DAMAGE HAZARD
Failure to follow this caution may result in minor property or
unit damage.
The furnace can operate in the high--heat mode when certain
fault conditions occur. The following precautions should be
taken:
1. Size gas piping based on the high--heat input
2. Check the high--heat input and adjust it per the main
literature instruction.
CAUTION
!
Step 3 — Furnace Location Relative to Cooling
Equipment
The cooling coil must be installed parallel with or on downstream
side of furnace to avoid condensation in heat exchanger. When
installed parallel with a furnace, dampers or other means used to
control flow of air shall be adequate to prevent chilled air from
entering furnace. If dampers are manually operated, they must be
equipped with a means to prevent operation of either unit unless
damper is in full--heat or full--cool position.
Step 4 — Hazardous Locations
FIRE, EXPLOSION, INJURY OR DEATH HAZARD
Improper location or inadequate protection could result in fire
or explosion.
When furnace is installed in a residential garage, it must be
installed so that burners and ignition sources are located a
minimum of 18 in. (457 mm) above floor. The furnace must
be located or protected to avoid physical damage by vehicles.
When furnace is installed in a public garage, airplane hangar,
or other building having a hazardous atmosphere, unit must be
installed in accordance with requirements of National Fire
Protection Association, Inc. (See Fig. 18.)
!
WARNING
Step 5 — Furnace Location and Application
DIRECT VENT (2--PIPE) APPLICATION
Furnace may be located in a confined space without special
provisions for dilution or ventilation air.
18-IN. (457.2 mm)
MINIMUM TO BURNERS
A93044
Fig. 18 -- Installation in a Garage
NON--DIRECT VENT (1--PIPE) APPLICATION
UNIT DAMAGE HAZARD
Failure to follow this caution may result in intermittent unit
operation.
Do not install furnace in a corrosive or contaminated
atmosphere. Make sure all combustion and circulating air
requirements are met.
CAUTION
!
Refer to the AIR FOR COMBUSTION AND VENTILATION
section for details.
AIR FOR COMBUSTION AND VENTILATION
Provisions for adequate combustion, ventilation, and dilution air
must be provided in accordance with:
S U.S. Installations: Section 9.3 of the NFGC, Air for Combustion
and Ventilation and applicable provisions of the local building
codes.
S Canadian Installations: Part 8 of the NFPA54/ANSI
Z223.1--2006 CAN/CSA--B149.1--05, Venting Systems and Air
Supply for Appliances and all authorities having jurisdiction.
FURNACE CORROSION HAZARD
Failure to follow this warning could result in reduced furnace
component life.
Air for combustion must not be contaminated by halogen
compounds, which include fluoride, chloride, bromide, and
iodide. These elements could corrode heat exchangers and
shorten furnace life. Air contaminants are found in aerosol
sprays, detergents, bleaches, cleaning solvents, salts, air
fresheners, and other household products.
!
WARNING
The following types of furnace installations may require
OUTDOOR AIR for combustion due to chemical exposures:
S Commercial buildings
S Buildings with indoor pools
S Laundry rooms
S Hobby or craft rooms, and
S Chemical storage areas
If air is exposed to the following substances, it should not be used
for combustion air, and outdoor air may be required for
combustion:
S Permanent wave solutions
S Chlorinated waxes and cleaners
S Chlorine based swimming pool chemicals
S Water softening chemicals
S De--icing salts or chemicals
S Carbon tetrachloride
S Halogen type refrigerants
S Cleaning solvents (such as perchloroethylene)
S Printing inks, paint removers, varnishes, etc.
S Hydrochloric acid
S Cements and glues
S Antistatic fabric softeners for clothes dryers
S Masonry acid washing materials
All fuel--burning equipment must be supplied with air for fuel
combustion. Sufficient air must be provided to avoid negative
355A