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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 Con-
tractors Association (ACCA) or A.R.I. 230 be followed in estimat-
ing heating requirements. When estimating heating require-
ments for installation at altitudes above 2000 ft., remember the
gas input may need to be reduced (See High Altitude Installation).
Material in this shipment has been inspected at the
factory and released to the transportation agency with-
out known damage. Inspect exterior of carton for evi-
dence of rough handling in shipment. Unpack carefully
after moving equipment to approximate location. If
damage to contents is found, report the damage immedi-
ately to the delivering agency.
Codes and local utility requirements governing the installa-
tion 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,
8501 E. Pleasant Valley Rd., Cleveland, Ohio 44131.
These furnaces have been classified as CATEGORY IV furnaces
in accordance with latest edition of ANSI Z21.47 • CAN/CGA 2.3
standards. Category IV furnaces operate with positive vent
static pressure and with a flue loss less than 17 percent.
▲
CAUTION
!
To prevent shortening its service life, the furnace should not
be used as a "Construction Heater" during the finishing
phases of construction. The low return air temperatures can
lead to the formation of condensate even though this is a non-
condensing model. Condensate in the presence of chlorides
and fluorides from paint, varnish stains, adhesives, cleaning
compounds, and cement create a corrosive condition which
may cause rapid deterioration of the heat exchanger.
▲
WARNING
!
These furnaces are not approved or intended for installation in
manufactured (mobile) housing, trailers, or recreational
vehicles. Failure to follow this warning could result in property
damage, personal injury, or death.
▲
CAUTION
!
Do not install the furnace in a corrosive or contaminated
atmosphere.
These conditions require special venting systems, which must be
gas tight and water tight.
These furnaces may be twinned using BAYTWIN300A. They
shall have common returns with equal pressure drops or ducts
with equivalent lengths and sizes.
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 location 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
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.
18-CD19D5-10
Installer's Guide
Contents
Installation Instructions
General Installation Instructions
Location and Clearances
Upflow Installation
IFC Error Flash Codes
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 set above the highest snow accumulation level?
(See the Air for Combustion and Ventilation section)
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.
IMPORTANT:
The furnace must be installed level. The only allowable variation
would be slightly to the left and/or forward in upflow installations or
slightly toward the front in horizontal installations. This is necessary
for proper condensate drainage.
UPFLOW INSTALLATION
Standoffs and screws (See Figure 1) are included with the cased
coils for attachment to the furnace. There are clearance align-
ment holes near the bottom of the coil wrapper. Drill screws are
used to engage the furnace top flanges. The standoff is inserted
into the cabinet alignment hole. The drill screws are inserted
through the standoffs then screwed into the furnace flange. The
coil is always placed downstream of the furnace airflow.
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