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IO-247A 12/04
• Provisions must be made for venting combustion products
outdoors through a proper venting system. The length of
flue pipe could be a limiting factor in locating the furnace.
• Ensure adequate combustion air is available for the furnace.
Improper or insufficient combustion air can expose building
occupants to gas combustion products that could include
carbon monoxide. Refer to Section V, Combustion and
Ventilation Air Requirements.
• The furnace must be level. If the furnace is to be set on a
floor that may become wet or damp at times, the furnace
should be supported above the floor on a concrete base
sized approximately 1-1/2" larger than the base of the
furnace.
• Ensure upflow or horizontal furnaces are not installed directly
on carpeting, or any other combustible material. The only
combustible material allowed is wood.
• Exposure to contaminated combustion air will result in safety
and performance-related problems. Do not install the
furnace where the combustion air is exposed to the following
substances:
chlorinated waxes or cleaners
chlorine-based swimming pool chemicals
water softening chemicals
deicing salts or chemicals
carbon tetrachloride
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
• If the furnace is used in connection with a cooling unit, install
the furnace upstream or in parallel with the cooling unit coil.
Premature heat exchanger failure will result if the cooling
unit coil is placed ahead of the furnace.
• If the furnace is installed in a residential garage, position
the furnace so that the burners and ignition source are
located not less than 18 inches (457 mm) above the floor.
Protect the furnace from physical damage by vehicles.
• If the furnace is installed horizontally, the furnace access
doors must be vertical so that the burners fire horizontally
into the heat exchanger. Do not install the unit with the
access doors on the “up/top” or “down/bottom” side of the
furnace.
• Do not connect this furnace to a chimney flue that serves a
separate appliance designed to burn solid fuel.
CLEARANCES AND ACCESSIBILITY
Unobstructed front clearance of 24" for servicing is recommended.
TOP
B1-VENT SINGLE
(PLENUM)
1" 6" 1" 3" 0" 1"
VENT
SIDES FRONT BACK
Top clearance for horizontal configuration - 1"
HORIZONTAL INSTALLATION
Line contact to framing is permitted when installed in the horizontal
configuration. Line contact is defined as the portion of the cabinet
that is formed by the intersection of the top and side.
National Fire Protection Association
1 Batterymarch Park
Quincy, MA 02269
CSA International
8501 East Pleasant Valley
Cleveland, OH 44131
A copy of the CAN/CSA B149 Installation Codes can also be
obtained from:
CSA International
178 Rexdale Boulevard
Etobicoke, Ontario, Canada M9W 1R3
The rated heating capacity of the furnace should be greater than or
equal to the total heat loss of the area to be heated. The total heat
loss should be calculated by an approved method or in accordance
with “ASHRAE Guide” or “Manual J-Load Calculations” published
by the Air Conditioning Contractors of America.
In the USA, this furnace MUST be installed in accordance with the
latest edition of the ANSI Z223.1 booklet entitled “National Fuel
Gas Code” (NFPA 54), and the requirements or codes of the local
utility or other authority having jurisdiction. In Canada, this furnace
must be installed in accordance with the current CAN/CGA-B149.1
& 2 Gas Installation Codes, local plumbing or waste water codes
and other applicable codes.
Additional helpful publications available from the NFPA are, NFPA
90A - Installation of Air Conditioning and Ventilating System and
NFPA 90B - Warm Air Heating and Air Conditioning System.
All venting shall be in accordance with PART 7, Venting of
Equipment, of the National Fuel Gas Code, ANSI Z223.1, or
applicable local building and/or air conditioning codes. These
publications are available from:
National Fire Protection Association, Inc.
Batterymarch Park
Quincy, MA 02269
The GMV8 series of furnaces meet the California NOx emission
standards and California seasonal efficiency standards. ANNUAL
inspections of the furnace and its vent system is strongly
recommended.
IV. LOCATION REQUIREMENTS AND CONSIDERATIONS
GENERAL
WARNING
P
OSSIBLE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH DUE TO FIRE,
EXPLOSION, SMOKE, SOOT, CONDENSTAION, ELECTRICAL SHOCK OR CARBON
MONOXIDE MAY RESULT FROM IMPROPER INSTALLATION, REPAIR, OPERATION,
OR MAINTENANCE OF THIS PRODUCT.
WARNING
T
O PREVENT POSSIBLE EQUIPMENT DAMAGE, PROPERTY DAMAGE, PERSONAL
INJURY OR DEATH, THE FOLLOWING BULLET POINTS MUST BE OBSERVED
WHEN INSTALLING THE UNIT.
Follow the instructions listed below when selecting a furnace
location. Refer also to the guidelines provided in Section V,
Combustion and Ventilation Air Requirements.
• Centrally locate the furnace with respect to the proposed or
existing air distribution system.
• Ensure the temperature of the return air entering the furnace
is between 55°F and 100°F when the furnace is heating.