6
T
O
PREVENT
POSSIBLE
EQUIPMENT
DAMAGE
,
PROPERTY
DAMAGE
,
PERSONAL
INJURY
OR
DEATH
,
THE
FOLLOWING
BULLET
POINTS
MUST
BE
OBSERVED
WHEN
INSTALLING
THIS
UNIT
.
WARNING
Follow the instructions listed below when selecting a furnace lo-
cation. Refer also to the guidelines provided in
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.
•
If the furnace is installed in an application where the
typical operating sound level of a furnace is deemed
objectionable, an optional sound reduction kit is
available. Consult your local distributor for more details.
•
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
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.
T
O
PREVENT
PROPERTY
DAMAGE
,
PERSONAL
INJURY
OR
DEATH
DUE
TO
FIRE
,
DO
NOT
INSTALL
THIS
FURNACE
IN
A
MOBILE
HOME
,
TRAILER
,
OR
RECREATIONAL
VEHICLE
.
WARNING
To ensure proper furnace operation, install, operate and maintain
the furnace in accordance with these installation and operation
instructions, all local building codes and ordinances.
In their ab-
sence, follow the latest edition of the National Fuel Gas Code (NFPA
54/ANSI Z223.1), and/or CAN/CSA B149 Installation Codes, local
plumbing or waste water codes, and other applicable codes.
A copy of the National Fuel Gas Code (NFPA 54/ANSI Z223.1) can be
obtained from any of the following:
American National Standards Institute
25 West 43rd Street, 4th Floor
New York, NY 10036
National Fire Protection Association
1 Batterymarch Park
Quincy, MA 02169-7471
CSA International
8501 East Pleasant Valley
Cleveland, OH 44131
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 ac-
cordance 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. 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 the National Fuel Gas
Code, ANSI Z223.1, or applicable local building and/or air condi-
tioning codes.
NOTE:
Furnaces with NOx screens meet the California NOx emis-
sion standards and California seasonal efficiency standards. AN-
NUAL inspections of the furnace and its vent system is strongly
recommended.
L
OCATION
R
EQUIREMENTS
AND
C
ONSIDERATIONS
Your unit model type determines which installation procedures
must be used. For *MH8, *MS8, and GHS8 models, you must follow
instructions for Horizontal Left, Horizontal Right or Upflow instal-
lations only. These furnaces are not approved for Downflow in-
stallations.
Downflow models
GD(H,S) ARE NOT APPROVED FOR HORIZONTAL
OR UPFLOW INSTALLATIONS
. For these models, use only the in-
structions for downflow installation only.
