Installation, Start–Up, Operating and
Service and Maintenance Instructions
NOTE: Read the entire instruction manual before starting the
installation.
TABLE OF CONTENTS
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
LOCATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Table 1 – Minimum Free Area Required for Each Combustion Air
opening of Duct to Outdoors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Table 2 – Minimum Space Volumes for 100% Combustion, Ventila-
tion, and Dilution from Indoors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Table 3 – Opening Dimensions - In. (mm). . . . . . . . . . . . . . . . . . . . 10
AIR DUCTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
GAS PIPING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Table 4 – Maximum Capacity of Pipe . . . . . . . . . . . . . . . . . . . . . . . 14
ELECTRICAL CONNECTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Table 5 – Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
VENTING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Table 6 – Minimum Allowable Input Rating of
Space-Heating Appliance in Thousands of Btuh per Hour. . . . . . . . 21
Table 7 – Combined Appliance Maximum Input Rating
in Thousands of Btuh per Hour. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Table 8 – Recommended Minimum Vent Height Per Furnace and Vent
Orientation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
START-UP, ADJUSTMENT, AND SAFETY CHECK . . . . . . . . . . . 25
Table 9 – Altitude Derate Multiplier for U.S.A.. . . . . . . . . . . . . . . . 26
Table 10 – Gas Rate (CU ft./hr) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Table 11 – Blower Off Delay Setup Switch . . . . . . . . . . . . . . . . . . . 28
Table 12 – Cooling Airflow Adjustments from 1.5 to 6 Tons . . . . . 29
Table 13 – Air Delivery - CFM (With Filter). . . . . . . . . . . . . . . . . . 30
Table 14 – Furnace Setup Switch Description . . . . . . . . . . . . . . . . . 34
Table 15 – Orifice Size and Manifold Pressure (In. W.C.) for Gas Input
Rate (Tabulated Data Based on 22,000 Btuh High-Heat/14,500 Btuh
for Low-Heat per Burner, Derated 4 Percent for Each 1000 Ft. (305 M)
Above Sea Level) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Table 16 – Orifice Size and Manifold Pressure (In. W.C.) for Gas Input
Rate (Tabulated Data Based on 21,000 Btuh High-Heat/14,500 Btuh
for Low-Heat Per Burner, Derated 4 Percent for Each 1000 Ft. (305 M)
Above Sea level). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
SERVICE AND MAINTENANCE PROCEDURES. . . . . . . . . . . . . . 37
Table 17 – Filter Size Information - In. (mm) . . . . . . . . . . . . . . . . . 39
SEQUENCE OF OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
TROUBLESHOOTING GUIDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
PARTS REPLACEMENT INFORMATION GUIDE . . . . . . . . . . . . . 48
EXAMPLE OF MODEL NUMBER . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Most states in the USA an jurisdictions in Canada have laws that require
the use of Carbon Monoxide (CO) alarms with fuel burning products.
Examples of fuel burning products are furnaces, boilers, space heaters,
generators, water heaters, stoves/ranges, clothes dryers, fireplaces,
incinerators, automobiles, and other internal combustion engines. Even
if there are no laws in your jurisdiction requiring a CO Alarm, it’s highly
recommended that whenever any fuel burning product is used in or
around the home or business that the dwelling be equipped with a CO
Alarm(s). The Consumer Product Safety Commission recommends the
use of CO Alarm(s). The CO Alarm(s) must be installed, operated, and
maintained according to the CO Alarm manufacturer’s instructions. For
more information about Carbon Monoxide, local laws, or to purchase a
CO Alarm online, please visit the following website.
https://www.kidde.com.
A200115
Portions of the text and tables are reprinted from NFPA 54/ANSI Z223.1E, with permission of National Fire Protection Association, Quincy, MA
02269 and American Gas Association, Washington DC 20001. This reprinted material is not the complete and official position of the NFPA or ANSI
on the referenced subject, which is represented only by the standard in its entirety.
F80CTL & G80CTL
80% AFUE, Two-Stage, Variable–Speed
4–Way Multipoise Gas Furnace
(Series A)
WARNING
!
CARBON MONOXIDE POISONING HAZARD
Failure to follow this warning could result in personal injury and/or
death.
Carbon Monoxide (CO) is a colorless, odorless, and tasteless poisonous
gas that can be fatal when inhaled. Follow all installation, maintenance,
and service instructions. See additional information below regarding
the installation of a CO Alarm.
Use of the AHRI Certified TM Mark indicates
a manufacturer’s participation in the program.
For verification of certification for individual
products, go to www.ahridirectory.org .
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