Installation Instructions
NOTE:
Read the entire instruction manual before starting the installation.
SAFETY CONSIDERATIONS
Improper installation, adjustment, alteration, service, maintenance, or
use can cause explosion, fire, electrical shock, or other conditions which
may cause death, personal injury, or property damage. Consult a
qualified installer, service agency, or your distributor or branch for
information or assistance. The qualified installer or agency must use
factory-authorized kits or accessories when modifying this product.
Refer to the individual instructions packaged with the kits or accessories
when installing.
Follow all safety codes. Wear safety glasses, protective clothing, and
work gloves. Have a fire extinguisher available. Read these instructions
thoroughly and follow all warnings or cautions include in literature and
attached to the unit. Consult local building codes, the current editions of
the National Fuel Gas Code (NFGC) NFPA 54/ANSI Z223.1 and the
National Electrical Code (NEC) NFPA 70.
In Canada, refer to the current editions of the National Standards of
Canada CAN/CSA-B149.1 and .2 Natural Gas and Propane Installation
Codes, and Canadian Electrical Code CSA C22.1
Recognize safety information. This is the safety-alert symbol . When
you see this symbol on the unit and in instructions or manuals, be alert to
the potential for personal injury.
Understand the signal words DANGER, WARNING, and CAUTION.
These words are used with the safety-alert symbol. DANGER identifies
the most serious hazards which will result in severe personal injury or
death. WARNING signifies hazards which could result in personal
injury or death. CAUTION is used to identify unsafe practices which
may result in minor personal injury or product and property damage.
NOTE is used to highlight suggestions which will result in enhanced
installation, reliability, or operation.
TABLE OF CONTENTS
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
TABLE OF CONTENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
DESCRIPTION AND USAGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
SECTION 1: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
DUCT CONNECTIONS - ALL MODELS. . . . . . . . . . . . . . . . . . 3
ELECTROSTATIC DISCHARGE (ESD) PRECAUTION . . . . . 5
SECTION 2: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
GENERAL - ALL ORIENTATIONS . . . . . . . . . . . . . . . . . . . . . . 5
INSTALL FURNACES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
UPFLOW INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
DOWNFLOW INSTALLATIONS . . . . . . . . . . . . . . . . . . . . . . . . 6
HORIZONTAL INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . 6
General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Attic Platform Back-to-Back Installations -
Non-Condensing and Condensing Furnaces . . . . . . . . . . . . . . . . . 7
Horizontal Suspended Installation - Condensing Models . . . . . . . 7
Horizontal Suspended Installation -
Non-Condensing Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Horizontal, Stacked Together - for Non-Condensing ONLY . . . . 8
SECTION 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
CONNECT ELECTRICAL COMPONENTS. . . . . . . . . . . . . . . 12
TWINNING KIT HARNESS CONNECTIONS. . . . . . . . . . . . . 12
COMPONENTS—COOLING . . . . . . . . . . . . . . . . . . . . . . . . . . 17
THERMOSTAT CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . 17
VENTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
GAS SUPPLY PIPING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
DRAIN CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
START-UP AND ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . 21
SEQUENCE OF OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
AGATWNPME01B
TWINNING KIT
For Single-Stage and Two-Stage, Variable Speed Condensing and
Non-Condensing Gas Furnaces
WARNING
!
FIRE, EXPLOSION, ELECTRICAL SHOCK AND
CARBON MONOXIDE POISONING HAZARD
Failure to follow this warning could result in personal injury, death
and/or property damage.
Improper installation, adjustment, alteration, service, maintenance, or
use can cause carbon monoxide poisoning, explosion, fire, electrical
shock, other conditions, which could result in personal injury or death.
Consult a qualified service agency, local gas supplier, or your
distributor or branch for information or assistance. The qualified
service agency must use only factory-authorized kits or accessories
when modifying this product.
WARNING
!
FIRE, EXPLOSION, ELECTRICAL SHOCK, AND
CARBON MONOXIDE POISONING HAZARD
Failure to follow this warning could result in dangerous operation,
personal injury, death, or property damage.
Furnaces shall NOT be twinned (i.e. tandem or staged operation) unless
approved in factory technical specifications literature for the furnace.
A factory authorized, field-supplied Twinning Kit MUST be used.
Consult furnace pre-sale literature for specific models approved for
twinning and the correct twinning kit. Twinned furnaces must be
installed on both a common supply AND a common return duct system
as shown in the Twinning Kit Installation Instructions. Only two
furnaces can be twinned on a common supply and return duct system
using a factory authorized twinning kit.
