18-CD33D1-4
3
Installer’s Guide
INSTALLATION INSTRUCTIONS
General Installation Instructions
3
Location and Clearances
4
Outline Drawings
5
Upflow Installation
7
Downflow Installation
7
Horizontal Installation
7
Air For Combustion and Ventilation
8
Duct Connections
10
Return Air Filters
11
General Venting Instructions
14
Venting Material
15
Venting Tables
15
Horizontal Venting
16
Venting Through The Wall
20
Venting Through The Roof
20
Downward Venting
22
Venting Through a Masonry Chimney
22
Condensate Drain Instructions
25
Electrical Connections
27
Field Wiring Diagrams
27
Gas Piping
29
Combustion Input Checks
31
Start Up and Adjustment
33
Preliminary Inspections
33
Lighting Instructions
34
Sequence Of Operation
34
Control And Safety Switch Adjustments
34
Airflow Adjustment
35
Conditions Affecting Operation
35
IFC Error Flash Code
37
GENERAL INSTALLATION INSTRUCTIONS
The manufacturer assumes no responsibility for equip-
ment 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 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
without known damage. Inspect exterior of carton
for evidence of rough handling in shipment. Unpack
carefully after moving equipment to approximate lo-
cation. If damage to contents is found, report the
damage immediately to the delivering agency.
Codes and local utility requirements governing the instal-
lation 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 In
-
stallation Code, CAN/CGA B149.1. The latest code may
be obtained from the American Gas Association Labora-
tories, 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
• CAN/ CGA 2.3 standards.
Contents
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WARNING
!
FIRE OR EXPLOSION HAZARD
Failure to follow the safety warnings exactly could re-
sult in serious injury, death or property damage.
Improper servicing could result in dangerous opera-
tion, serious injury, death, or property damage.
Safety signal words are used to designate a degree or
level of seriousness associated with a particular hazard.
The signal words for safety markings are
WARNING
and
CAUTION
.
a.
WARNING
indicates a potentially hazardous situation
which, if not avoided, could result in death or serious
injury.
b.
CAUTION
indicates a potentially hazardous situation
which, if not avoided, may result in minor or moderate
injury. It is also used to alert against unsafe practices
and hazards involving only property damage.
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 approved for installation in Manufac-
tured/Mobile housing when used with BAYMFGH100A.
