6
18-CD30D1-12
Installer’s Guide
GENERAL INSTALLATION
INSTRUCTIONS
The manufacturer assumes no responsibility for
equipment installed in violation of any code or regulation.
It is recommended that Manual J of the Air Conditioning
Contractors Association (ACCA) or A.R.I. 230 be followed
in estimating heating requirements. When estimating
heating requirements for installation at Altitudes above
2000 ft., remember the gas input must be reduced (See
GAS INPUT ADJUSTMENT).
Material in this shipment has been inspected at the
factory and released to the transportation agency
without known damage. Inspect exterior of carton
for evidence of rough handling in shipment. Unpack
carefully after moving equipment to approximate
location. If damage to contents is found, report the
damage immediately to the delivering agency.
Codes and local utility requirements governing the
installation of gas fired equipment, wiring, plumbing,
and flue connections must be adhered to. In the
absence of local codes, the installation must conform
with latest edition of the National Fuel Gas Code ANSI
Z223.1 • National Installation Code, CAN/CGA B149.1.
The latest code may be obtained from the American
Gas Association Laboratories, 400 N. Capitol St. NW,
Washington D.C. 20001.
1-800-699-9277 or www.aga.org
These furnaces have been classified as CATEGORY IV
furnaces in accordance with latest edition of ANSI Z21.47
standards • CAN/CGA 2.3. Category IV furnaces operate
with positive vent static pressure and with a flue loss less
than 17 percent. These conditions require special venting
systems, which must be gas tight and water tight. These
Category IV Direct Vent furnaces are not approved for
installation in Manufactured/Mobile housing.
LOCATION AND CLEARANCES
The location of the furnace is normally selected by the
architect, the builder, or the installer. However, before
the furnace is moved into place, be sure to consider the
following requirements:
1. Is the l
ocation selected as near the chimney or vent
and as centralized for heat distribution as practical?
2. Do all clearances between the furnace and enclosure
equal or exceed the minimums stated in Clearance
Table on the Outline Drawings provided in this
document?
3. Is there sufficient space for servicing the furnace and
other equipment? A minimum of 24 inches front
accessibility to the furnace must be provided. Any
access door or panel must permit removal of the
largest component.
4. Are there at least 3 inches of clearance between the
furnace combustion air openings in the front panel
and any closed panel or door provided?
5. Are the ventilation and combustion air openings large
enough and will they remain unobstructed? If outside
air is used, are the openings at least 12" above the
highest expected snow accumulation level (18"
minimum for Canadian applications)?
6. Allow sufficient height in supply plenum above the
furnace to provide for cooling coil installation, if the
cooling coil is not installed at the time of this furnace
installation.
7. A furnace shall be installed so electrical components
are protected from water
.
8. If the furnace is installed in a residential garage, it
must be installed so that the burners, and the ignition
source are located not less than 18 inches above the
floor and the furnace must be located or protected to
avoid physical damage from vehicles.
7. 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 a duct(s) sealed to the furnace casing
and terminating outside the space containing the
furnace.
8. A gas-fired furnace for installation in a residential
garage must be installed as specified in “Location
and Clearances” section of these instructions.
9. The furnace may be used for temporary heating of
buildings or structures under construction only when
the following conditions have been met:
a. The furnace venting system must be complete
and installed per manufacturers instructions.
b. The furnace is controlled only by a room Comfort
Control (no field jumpers).
c. The furnace return air duct must be complete
and sealed to the furnace.
d. The furnace input rate and temperature rise must
be verified to be within nameplate marking.
e. 100% of the furnace combustion air requirement
must come from outside the structure.
f. The Furnace return air temperature range is
between 55
0
and 80
0
Fahrenheit.
g. Clean the Furnace, duct work, and components
upon substantial completion of the construction
process, and verify Furnace operating condition
including ignition, input rate, temperature rise and
venting, according to the manufacturer's instructions.
h. An external field supplied air filter must be used
during construction.
10. This product must be gas piped by a
Licensed Plumber or Gas Fitter in the
Commonwealth of Massachusetts.
