Carrier KGAET0201ETK User manual

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 included 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 and NOTICE are used to highlight suggestions which will result
in enhanced installation, reliability, or operation.
Special Venting Requirements for Installations in
Canada
Installation in Canada must conform to the requirements of CSA B149
code. Vent systems must be composed of pipe, fittings, cements, and
primers listed to ULC S636. The special vent fittings, accessory
concentric vent termination kits, and accessory external drain trap have
been certified to ULC S636 for use with those Royal Pipe and IPEX
PVC vent components which have been certified to this standard. In
Canada, the primer and cement must be of the same manufacturer as the
vent system – GVS-65 Primer (Purple) for Royal Pipe or IPEX System
636, PVC/CPVC Primer, Purple Violet for Flue Gas Venting and
GVS-65 PVC Solvent Cement for Royal Pipe or IPEX System 636(1)t,
PVC Cement for Flue Gas Venting, rated Class IIA, 65 deg C. must be
used with this venting system - do not mix primers and cements from
one manufacturer with a vent system from a different manufacturer.
Follow the manufacturer’s instructions in the use of primer and cement
and never use primer or cement beyond its expiration date.
The safe operation, as defined by ULC S636, of the vent system is based
on following these installation instructions, the vent system
manufacturer’s installation instructions, and proper use of primer and
cement. All fire stop and roof flashing used with this system must be UL
listed material. Acceptability under Canadian standard CAN/CSA B149
is dependent upon full compliance with all installation instructions.
Under this standard, it is recommended that the vent system be checked
once a year by qualified service personnel.
The authority having jurisdiction (gas inspection authority, municipal
building department, fire department, etc) should be consulted before
installation to determine the need to obtain a permit.
*IPEX System 636™ is a trademark of IPEX Inc.
Consignes spéciales pour l’installation de
ventilation au Canada
L’installation faite au Canada doit se conformer aux exigences du code
CAN/CSA B149-2010. Ce systême de ventillation doit se composer de
tuyaux, raccords, ciments et apprêts conformes au ULC S636. La
tuyauterie de ventilation des gaz, ses accessoires, le terminal
concentrique mural ainsi que l’ensemble du drain de condensation
extérieur fourni par le fabricant de cette fournaise ont été certifiés ULC
S636 pour l’application des composantes Royal Pipe, IPEX PVC qui
sont certifiées à ce standard. Au Canada, l’apprêt et le ciment doivent
être du même fabricant que le système d’évacuation. L’apprêt GVS-65
(Purple) et le ciment-solvant GVS-65 doivent être utilisé avec les Royal
Pipe. Système IPEX 636, apprêt PVC/CPVC, Purple pour évacuation
des gaz de combustion et système IPEX 636(1)t, ciment PVC pour
évacuation des gaz de combustion, coté classe IIA, 65 deg C. doivent
être utilisés avec le système d’évacuation IPEX 636 – Ne pas combiner l
’apprêt et le ciment d’un manufacturier avec un système d’évacuation
d’un manufacturier différent.
Bien suivre les indications du manufacturier lors de l’utilisation de
l’apprêt et du ciment et ne pas utiliser ceux-ci si la date d’expiration est
atteinte.
L’opération sécuritaire, tel que définit par ULC S636, du système de
ventilation est basé sur les instructions d’installation suivantes, ainsi que
l’usage approprié de l’apprêt et ciment. Tout arrët feu et solin de toit
utilisés avec ce système doivent être des matériaux listés UL.
L’acceptation du standard Canadien CAN/CSA B149 est directement
KGAET0201ETK
External Trap Kit
For use with 35 in (889 MM) Condensing Gas Furnaces
WARNING
!
FIRE, EXPLOSION, ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury, death
and/or property damage.
The ability to properly perform maintenance on this equipment requires
certain knowledge, mechanical skills, tools, and equipment. If you do
not possess these, do not attempt to perform any maintenance on this
equipment other than those procedures recommended in the Home
Owner’s Information Manual.

KGAET0201ETK: Installation Instructions
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
2
relié à l’installation conforme aux instructions ci- haut mentionnées. Le
standard Canadien recommande l’ inspection par un personel qualifié et
ce, une fois par année.
Les autoritées ayant juridiction (inspecteurs de gas, inspecteurs en
bâtiments, département des incendies, etc) devraient être consultées
avant l’installation afin de déterminer si un permis est requis.
INTRODUCTION
This instruction covers the installation of the External Vent Trap Kit with
the furnaces listed in Table 1. This kit may be applied to either or both
the vent/exhaust piping system and/or the combustion-air inlet piping
system.
Very high efficiency gas furnaces tend to condense nearly all of the
water vapor products of combustion within the furnace. Since there is
less water vapor to condense in the venting system, extra care must be
given to verifying that the drain trap(s) will self-prime under normal
conditions. IT IS IMPERATIVE that these instructions be followed fully
to ensure proper operation of the venting drainage system.
Table 1 – Allowed Gas Furnaces
DESCRIPTION AND USAGE
Use this External Vent Trap Kit (“Trap Kit”) to allow the furnace venting
system to be positioned below the level of the furnace. In this
configuration, the condensate from the venting system does NOT drain
to the furnace (see Table 1).
This Trap Kit may also be used for the combustion air inlet piping, either
by itself, or in conjunction with the Trap Kit being applied to the
vent/exhaust piping. When used for the combustion air inlet piping, only,
the venting system must be installed as shown in the furnace installation
instructions.
This External Vent Trap Kit (“Trap Kit”) contains the following items:
Application to Vent/Exhaust Piping Systems
The venting system is configured such that ALL of the venting system is
sloped toward the Trap Kit, and therefore, all of the vent system
condensate is directed to the Trap Kit. The Internal Drain Trap Plug
MUST BE APPLIED to the vent side of the collector box trap
connection of the furnace to prevent vent gasses from being introduced
into the drainage system, and possibly the living space. See Fig. 3.
Application to Combustion Air Inlet Piping
Systems
This Trap Kit may used to help prevent liquid moisture from the inlet
piping system from entering the furnace. The Trap Kit may be used on
the inlet piping side, even if a Trap Kit is not used on the venting side
(see Fig. 1, Fig. 2 and Fig. 8) and the Furnace installation instructions
for more information on the application of the Trap Kit on
combustion-air inlet piping systems.
Fig. 8 shows the Trap Kit applied in upflow applications for
combustion-air inlet piping. The Trap Kit may be applied in any furnace
orientation-upflow, downflow, horizontal. The Trap Kit should be
located as close as possible to the furnace. If the Trap Kit is applied
ONLY to the combustion air inlet piping system, the vent/exhaust piping
should be configured as shown in the furnace installation instructions,
NOT these instructions.
WARNING
!
CARBON MONOXIDE POISONING HAZARD
Failure to follow these warnings could result in personal injury or
death.
The Internal Drain Trap Plug MUST BE APPLIED to the vent side of
the collector box trap connection of the furnace. Failure to do this may
result in vent gasses being released into the living space.
Failure to use a properly constructed trap(s), applying the incorrect
trap(s), or NOT water-priming trap(s) before operating furnace may
allow positive pressure vent gases to enter the structure through drain
tube. Vent gases contain carbon monoxide which is tasteless and
odorless.
USE WITH:
35” Furnaces
(excluding Ultra Low NOx)
External Condensate Drain Trap 1
Trap-Tee Vent Fitting (2-in./50mm PVC) 1
Internal Drain Trap Plug 1
NOTICE
!
OPTIONAL CONFIGURATION FOR COMBUSTION
AIR INLET PIPE
In applications where there is a risk of excessive moisture entering the
combustion air inlet pipe, a moisture trap may be added to the inlet pipe
to help prevent moisture from entering the furnace from the combustion
air inlet pipe.
When sizing venting systems, the equivalent length of the optional inlet
pipe moisture trap must be taken into account.
CAUTION
!
UNIT OPERATION HAZARD
Failure to follow this caution could result in intermittent unit operation.
When used, install the Trap Kit at the lowest point of the
combustion-air inlet piping system, within 24–in. (0.6 M) of the
furnace. This will help prevent water build-up in the combustion-air
inlet piping, and help prevent erratic unit operation.

KGAET0201ETK: Installation Instructions
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
3
L13F006A
Fig. 1 – Condensate Trap Plumbing Options for Vent or Combustion Air Pipe Below Furnace
L13F006B
Fig. 2 – Condensate Trap Plumbing Options for Vent or Combustion Air Pipe Below Furnace
NOTE:
a. Maximum vertical distance from furnace exit to top of Vent Tee of 60-in. (1.5M)
b. Provide enough vertical clearance to allow for 1/4-inch per foot (20mm per meter) slope to termination
c. Maximum length of 36-in. (1 M); minimum length of 6-in. (150mm)
d. All vent or combustion air pipe must slope toward external condensate trap and vent tee
e. Follow restrictions for Maximum Exposed Vent Length as stated in furnace installation instructions
f. External Vent Trap MUST be protected from freezing
g. Elbow must be located within 6-in. (150mm) of Vent Tee
h. Flow of air may be either away from trap (vent side) or toward trap (combustion air side); curve of vent tee must be positioned toward
termination (toward major flow of condensate), except as shown in Fig. 2.
i. When larger diameter pipe is used, a field supplied reducer is required between the tee “H” and the drain trap “F”
NOTE: Some models not approved for downflow application.
D&E
F
C
G
B
H
A
SLOPEUPTO
TERMINATION
1/4-IN. PER FOOT
TO CODE--APPROVED DRAIN
OR CONDENSATE PUMP
APPROVED
SUB--BASE OR
COIL CABINET
Representative drawing only, some models may vary in appearance
VENT OR COMBUSTION AIR
Two inch pipe shown. When another
size pipe is used, discard the 2-in.
tee in the kit and use a field
supplied tee that is the same
diameter as the pipe being used.
I
F
G
B
A
D&E
TO CODE--APPROVED
DRAIN OR CONDENSATE
PUMP
Representative drawing only, some models may vary in appearance
APPROVED
SUB--BASE OR
COIL CABINET
H
VENT OR COMBUSTION AIR
SLOPEUPTO
TERMINATION
1/4-IN. PER FOOT
Two inch pipe shown. When another
size pipe is used, discard the 2-in.
tee in the kit and use a field
supplied tee that is the same
diameter as the pipe being used.
I

KGAET0201ETK: Installation Instructions
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
4
L12F021
Fig. 3 – Condensate Trap Plumbing Options for Combustion Air Pipe (ONLY) Above Furnace
INSTALLATION
In this application, ALL vent piping MUST be sloped toward the
External Vent Trap Kit. The Internal Drain Trap Plug MUST be installed
in the vent/high-pressure side of the collector box trap connection in the
furnace (see Fig. 3). The Trap Kit MUST be installed at the lowest point
in the venting system.
Example Trap Kit component installations are shown in Fig. 1. Install as
shown in Fig. 3 through Fig. 7.
NOTE: NOTE: This kit is designed for use with 2-in. (50 mm)
PVC/ABS DWV vent/exhaust pipe applications. Additional pipe
diameters are usable when field-supplied PVC fittings are used with the
condensate trap supplied in kit (see Fig. 9) for proper placement of pipe
diameter transitions.
Representative drawing only, some models may vary in appearance
TO CODE--APPROVED DRAIN
OR CONDENSATE PUMP
COMBUSTION AIR
INLET PIPE
OPEN ’STAND PIPE’
FOR A/C OR HUMIDIFIER
DRAIN OPEN ’STAND PIPE’
FOR A/C OR HUMIDIFIER
DRAIN
TO CODE--APPROVED DRAIN
OR CONDENSATE PUMP
COMBUSTION AIR
INLET PIPE
Two inch pipe
shown. When
another size
pipe is used,
discard the
2-in. tee in
the kit and
use a field
supplied tee
that is the
same
diameter as
the pipe
being used.
Two inch pipe
shown. When
another size pipe is
used, use the 2-in.
tee in the kit and
transition to the
pipe diameter
required in the
vertical portion of
thepipeafterthe
tee.
WARNING
!
CARBON MONOXIDE POISONING HAZARD
Failure to follow these warnings could result in personal injury or
death.
The Internal Drain Trap Plug MUST BE APPLIED to the vent side of
the collector box trap connection of the furnace when the trap kit is
applied to the vent/exhaust piping system. Failure to do this may result
in vent gasses being released into the living space.
Failure to use a properly constructed trap(s) or NOT water-priming
trap(s) before operating furnace may allow positive pressure vent gases
to enter the structure through drain tube. Vent gases contain carbon
monoxide which is tasteless and odorless.
CAUTION
!
UNIT OPERATION HAZARD
Failure to follow this caution could result in intermittent unit operation.
When the Internal Drain Trap Plug is used, the inducer housing may fill
with condensate if any of the vent piping that is external to the furnace
is sloped toward the furnace.
NOTICE
!
Drain pipe and fittings must conform to ANSI standards and ASTM
D1785 or D2846. CPVC or PVC cement and primer must conform to
ASTM D2564 or F493 (see Table 2). See section for Special Venting
Requirements in the furnace installation instructions Venting section for
installations in Canada for pipe, fittings, cement, and primer material
requirements for Canadian installations.
WARNING
!
FIRE HAZARD
Failure to follow this warning could result in personal injury, death or
property damage.
Solvent cements and primers are combustible. Keep away from heat,
sparks and open flame. Use only in well-ventilated areas. Avoid
breathing in vapor or allowing contact with skin or eyes.

KGAET0201ETK: Installation Instructions
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
5
Table 2 – Approved Combustion-Air Vent Pipe, Fitting and Cement Materials (U.S.A. Installation)
Prepare the Furnace Internal Trap These instructions MUST be followed in order to provide for safe
operation of the furnace.
1. Position the furnace in its final operating orientation.
2. Configure the internal furnace drain trap as shown in the furnace
installation instructions for that orientation.
3. Once the drain trap configuration is complete as described in the
furnace installation instructions, remove the internal furnace drain
trap and install the Internal Drain Trap Plug as shown in Fig. 3,
FOR THAT ORIENTATION. Re-install the furnace drain trap.
4. Complete DRY FIT assembly of the field-supplied drainage system
drain lines as shown in the appropriate Fig. 4 through Fig. 7, and as
directed in the furnace installation instructions.
5. IF ALLOWED BY LOCAL CODE, it is recommended that a short
piece (6-in./15 cm) of clear tubing be applied near the exit of each
trap to allow observation of correct drain trap operation.
6. DO NOT cement drain lines at this time. See Drainage System
Layout and Installation section.
MATERIALS
USA
1. All pipe, fittings, primers*, and solvents* must conform to American National Standards Institute (ANSI) standards and
American Society for Testing and Materials (ASTM) standards or ULC S636 where required by code.
2. See Table below for approved materials for use in the U.S.A.
3. ULC S636 vent systems must be composed of pipe, fittings, cements, and primers from the same supplier.
4. Factory accessory concentric vent kits are ULC S636 listed.
CANADA
1. Installation in Canada must conform to the requirements of CAN/CSA B149 code.
2. Vent systems must be composed of pipe, fittings, cements, and primers from the same supplier and listed to ULC S636.
3. Not all materials below may be approved or listed to ULC S636.
4. Royal Pipe and IPEX are approved suppliers of ULC S636 pipe, fittings, cements and primers*.
5. Factory accessory concentric vent kits are ULC S636 listed for use with Royal Pipe and IPEX venting systems
Material Description Type
ASTM or ULC Specification
Pipe Solvents/Primers
** Cements
PVC
Pressure Pipe Schedule 40 D1785
D2466
or
D2665
F656 D2564
DWV Schedule 40 D1785/D2665
Cellular Core Schedule 40 F891
SDR 26 N/A D2241
SDR 21 N/A D2241
IPEX Schedule 40 ULC S636 ULC S636 ULC S636 ULC S636
Royal Pipe Schedule 40 ULC S636 ULC S636 ULC S636 ULC S636
ABS
ABS Schedule 40 D1527 D2468 Clear Cleaner
For ABS† D2235DWV-IPS Sizes Schedule 40 D2661 D2661
Cellular Core DWV-IPS Sizes Schedule 40 F628
CPVC
Pressure Pipe Schedule 40 F441 F438 F656 F493
SDR N/A F442 N/A
IPEX Schedule 40 ULC S636 ULC S636 ULC S636 ULC S636
Royal Pipe Schedule 40 ULC S636 ULC S636 ULC S636 ULC S636
*PVC and ABS pipe may use either DWV or pressure rated fittings.
**Colored or tinted solvents or primers must be used where required by code in the USA
†ABS plastic does not require a primer before solvent cementing. A cleaner for ABS is recommended to remove any surface residue. ABS cleaners
are not subject to ASTM standards.
Polypropylene Approved Manufacturer Solvents Primers Cements
Poly Pro® M & G Dura Vent Not Permitted Not Permitted
NOTE: Polypropylene vent systems are UL−1738 and ULC S636 listed and assembled using mechanical fastening systems
supplied by the vent manufacturer.
WARNING
!
CARBON MONOXIDE POISONING
Failure to follow these warnings could result in personal injury or
death.
The internal drain trap plug MUST BE APPLIED to the vent side of the
collector box trap connection of the furnace. Failure to do this may
result in vent gases being released into the living space.
Failure to use a properly constructed trap(s) or NOT water-priming
trap(s) before operating furnace may allow positive pressure vent gases
to enter the structure through drain tube. Vent gases contain carbon
monoxide which is tasteless and odorless.

KGAET0201ETK: Installation Instructions
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
6
L12F018
Fig. 4 – Location of Collector Box Vent Connection Trap Plug
(Only used when Trap Kit is used on the Vent Pipe)
Venting and Combustion Air System Layout and
Installation
NOTE: Slope vent pipes a minimum of 1/4-in. per linear ft.
(20mm/meter) toward the Vent/Exhaust Pipe External Trap Kit with no
sags between hangers. DO NOT slope the vent pipes toward the furnace
when using the trap kit on the vent/exhaust piping system.
NOTE: Slope the combustion-air inlet pipes a minimum of 1/4-in. per
linear ft. (20mm/meter) toward the exterior of the structure or insert a
second Trap Kit at the lowest point of the combustion-air inlet piping
system, within 24-in. (0.6 M) of the furnace.
BïPLUG
THESE PORTS
AïOPEN
UPFLOW ORIENTATION
BïPLUG
THESE PORTS
AïOPEN
DOWNFLOW ORIENTATION
BïPLUG
THESE PORTS
AïOPEN
HORIZONTAL RIGHT ORIENTATION
AïOPEN
BïPLUG
THESE PORTS
HORIZONTAL LEFT ORIENTATION
Representative drawing only, some models may vary in appearance
NOTE:
A. The lowerïmost lowïside “pivot” port on the collector box is always left open for the internal drain trap.
B. Insert plugs into BOTH of the highïside ports, ONLY when the Trap Kit is applied to the vent pipe.
C. DO NOT plug the trap port when the Trap Kit is used only for the combustion air pipe.
NOTICE
!
Follow all vent sizing and selection instructions that are included in the
Venting section of the furnace installation instructions.
The Equivalent Length of the Vent/Exhaust Pipe External Trap Kit
should be assumed to be 15 feet (5 M) of straight length of PVC/ABS
DWV pipe.
CAUTION
!
UNIT OPERATIONAL HAZARD
Failure to follow this caution may result in intermittent unit operation.
This kit is intended to be located at the lowest point in the vent system
and no more than 24-in. (0.6M) horizontally from where the vent exits
the furnace to achieve proper drainage.

KGAET0201ETK: Installation Instructions
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
7
Vent Located in Unconditioned Space
Vent Pipe and Condensate Drain Protection
Freezing condensate in condensate traps and drain lines may cause
cracks, and possible water damage may occur. Refer to the Maximum
Allowable Exposed Vent Lengths in Unconditioned Space limitations in
the furnace installation instructions.
Layout and Dry Fit Venting System
Layout and install the venting and/or combustion-air inlet system(s) as
follows:
1. Determine the best location for kit components. They should be
installed as close to furnace as possible (see Fig. 4 through Fig. 8
for examples).
2. Size the venting system per the instructions provided with the
furnace.
3. Dry-fit and assemble vent/exhaust and/or combustion-air inlet
piping per the instructions provided with the furnace, except that
the Trap Kit is placed at the lowest point of the vent/exhaust and/or
combustion-air inlet piping system (see Fig. 4 through Fig. 8 for
examples).
4. Cut section of vent/exhaust pipe to attach the trap-tee fitting, using
the examples in Fig. 1, Fig. 2 and Fig. 2 through Fig. 8.
NOTE: Position vent-tee fitting such that curved portion is as shown in
Fig. 1 and Fig. 2 to ensure proper vent/exhaust and/or combustion-air
inlet pipe draining.
5. Dry fit the trap-tee fitting into the venting and/or combustion-air
inlet piping system.
6. Verify the proper slope of the entire vent/exhaust and/or
combustion-air inlet piping system to the trap-tee(s). ALL
vent/exhaust piping between the furnace and the Trap Kit should be
sloped DOWN and AWAY from the furnace.
7. Cement all vent and/or combustion-air inlet piping in place, per the
instructions provided with the furnace.
Drainage System Layout and Installation
The furnace, indoor coil, and humidifier drains may be combined and
drained together. The indoor coil drain must have an external,
field-supplied trap prior to the furnace drain connection, and/or spill into
an open stand pipe (see Fig. 1 & Fig. 2). All drain connections (furnace,
indoor coil, or humidifier) must be terminated into an open or vented
drain as close to the respective equipment as possible to prevent
siphoning of the other equipments’ drains. See equipment installation
instructions for more information.
Outdoor draining of the furnace is permissible if allowed by local codes.
Use the accessory acid neutralizer kit as required by the application (to
protect shrubs, etc.), or as required by local codes.
Condensate is not to be drained onto crawlspace floor from furnace or
external trap. Installations must comply with regulations of local
building, heating, plumbing, or other codes in effect in area where
installation is made.
Complete the installation of the drainage system as follows:
1. Dry fit the external condensate drain trap supplied with the kit into
the vent trap-tee fitting. Apply field-supplied fittings as required if
the 2-in. (50mm) trap-tee supplied with the kit was not used.
2. Position the external condensate drain trap as required to match to
the condensate drainage piping system.
CAUTION
!
UNIT OPERATIONAL HAZARD
Failure to follow this caution may result in intermittent unit operation.
The combustion-air inlet piping system must not have any sections
where moisture may collect and block the flow of combustion air
through the piping system. If water does block the inlet pipes, the
furnace will not operate, or operate intermittently.
CAUTION
!
UNIT OPERATIONAL HAZARD
Failure to follow this caution may result in intermittent unit operation.
Unit must not be installed, operated, and then turned off and left in an
unoccupied structure during cold weather when temperature drops to
32°F (0°C) and below unless drain traps and drain lines have adequate
freeze protection. See Service and Maintenance Instructions for
winterizing procedure.
CAUTION
!
UNIT OPERATIONAL AND PROPERTY DAMAGE
HAZARD
Failure to follow this caution may result in intermittent unit operation,
and may cause frozen and/or burst indoor plumbing and property
damage.
Caution should be taken to prevent condensate trap(s) and drain line(s)
from freezing. Ambient temperatures below 32°F (0°C) may freeze
drain pipe and prohibit draining. If freeze protection is required, use a
self-regulating, shielded, and waterproof heat tape rated at 3 to 6 watt
per ft. (10 to 20 watt per meter) at 120v and 40°F (4°C). See Installation
Instructions supplied with accessory condensate trap heater, accessory
heat tape, or heat tape manufacturer’s recommendations.
CAUTION
!
UNIT OPERATION HAZARD
Failure to follow this caution could result in intermittent unit operation.
The inducer housing may fill with condensate if any of the vent piping
that is external to the furnace is sloped toward the furnace.
WARNING
!
FIRE HAZARD
Failure to follow this warning could result in personal injury, death or
property damage.
Solvent cements and primers are combustible. Keep away from heat,
sparks and open flame. Use only in well-ventilated areas. Avoid
breathing in vapor or allowing contact with skin or eyes.
CAUTION
!
PERSONAL INJURY OR PROPERTY DAMAGE
HAZARD
Failure to follow this caution may result in personal injury or property
damage.
Caution should be taken to prevent draining where slippery conditions
may cause personal injuries.
Excessive condensate drainage in open areas may cause saturated soil
conditions which may result in damage to plants and building
foundations.

KGAET0201ETK: Installation Instructions
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
8
3. Dry fit remaining drainage system piping as shown in Fig. 1, Fig. 2
and Fig. 4 through Fig. 8, as appropriate for the specific
installation requirements, using field-supplied components.
4. IF ALLOWED BY LOCAL CODE, it is recommended that a short
piece of clear tubing (6-in./0.2 M) be applied near the exit of each
trap to allow observation of correct drain trap operation.
5. Support all drainage system piping as needed, and in compliance
with local codes.
6. Verify that all drainage piping is sloped toward the open drain or
condensate sump pump.
7. Cement external condensate drain trap to the trap-tee and
connection adapters, if any.
8. Cement all remaining drainage system piping as required.
System Commissioning and Checkout
Follow these steps to verify proper operation of the trap and drainage
system:
1. IF ALLOWED BY LOCAL CODE, it is recommended that a short
piece of clear tubing (6-in./15 cm) be applied near the exit of each
trap to allow observation of correct drain trap operation.
2. Prime the furnace internal condensate drainage trap per the furnace
installation instructions. Collect or observe excess priming water at
the end of the drainage piping system to verify that the trap is fully
primed.
3. Prime the Trap Kit connected to the venting system by slowly
pouring at least 32-oz. (1 liter) of water into the vent termination.
Collect or observe excess priming water at the end of the drainage
piping system to verify that the trap is fully primed.
4. Prime the Trap Kit connected to the combustion-air inlet piping
system (IF USED) by slowly pouring at least 32-oz. (1 liter) of
water into the combustion air inlet at the vent termination. Collect
or observe excess priming water at the exit of the drainage piping
system to verify that the trap is fully primed.
5. Once the furnace has been completely installed per the instructions
supplied with the furnace, run the furnace for at least one hour to
verify that all drainage systems are operating properly. Collect or
observe condensate drainage at the exit of the drainage piping
system to verify that the traps are fully primed and that the drain
system is not blocked.
6. If the clear tubing has been applied to the drainage system, observe
that EACH trap in the system is draining properly. NOTE that the
combustion-air inlet piping system will likely NOT produce
condensate.
7. Listen for gurgling noises in the venting and drainage systems. This
is an indication that there are dips in the piping system, or that the
traps are not operating properly. Correct the conditions as needed.
8. If there are water gurgling or sloshing sounds coming from the
inducer housing, this is an indication that not all of the vent piping
is sloped AWAY from the furnace and toward the Trap Kit. Correct
the conditions as needed.
9. Shut down the furnace.
10. Once all drainage checks and verifications have been made, return
the furnace to its normal operating condition.
11. Perform the venting system checklist as shown in the following
WARNING box.
WARNING
!
CARBON MONOXIDE POISONING HAZARD
Failure to follow these warnings could result in personal injury or
death.
The Internal Drain Trap Plug MUST BE APPLIED to the vent side of
the collector box trap connection of the furnace when the trap kit is
applied to the vent/exhaust piping system. Failure to do this may result
in vent gasses being released into the living space.
Failure to use a properly constructed trap(s) or NOT water-priming
trap(s) before operating furnace may allow positive pressure vent gases
to enter the structure through drain tube. Vent gases contain carbon
monoxide which is tasteless and odorless.
WARNING
!
CARBON MONOXIDE POISONING HAZARD
Failure to follow these warnings could result in personal injury or
death.
If water vapor (fog) rather than liquid condensate is observed exiting
the drain port any of the traps, that MAY be an indication that
combustion gasses are escaping through the drain system.
• RECHECK that all traps are properly water-primed.
• RECHECK that the Internal Drain Trap Plug is properly inserted into
the internal condensate drain trap in the furnace (see Fig. 3).
• DO NOT operate the furnace until it is verified that all condensate
drain traps are operating properly.
Failure to use a properly constructed trap(s) or NOT water-priming
trap(s) before operating furnace may allow positive pressure vent gases
to enter the structure through drain tube. Vent gases contain carbon
monoxide which is tasteless and odorless.
CAUTION
!
UNIT OPERATION HAZARD
Failure to follow this caution could result in intermittent unit operation.
When the Internal Drain Trap Plug is used, the inducer housing may fill
with condensate if any of the vent piping that is external to the furnace
is sloped toward the furnace.
CAUTION
!
FIRE HAZARD
Failure to follow this warning could result in personal injury, death or
property damage.
Solvent cements and primers are combustible. Keep away from heat,
sparks and open flame. Use only in well-ventilated areas. Avoid
breathing in vapor or allowing contact with skin or eyes.

KGAET0201ETK: Installation Instructions
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
9
WARNING
!
CARBON MONOXIDE POISONING HAZARD
Failure to follow the steps outlined below for each appliance connected
to the venting system being placed into operation could result in carbon
monoxide poisoning or death.
The following steps shall be followed for each appliance connected to
the venting system being placed into operation, while all other
appliances connected to the venting system are not in operation:
1. Seal any unused openings in venting system.
2. Inspect the venting system for proper size and horizontal pitch, as
required in the National Fuel Gas Code, ANSIZ223.1/NFPA 54 or
the CSA B149.1 Natural Gas and Propane Installation Code and
these instructions. Determine that there is no blockage or
restriction, leakage, corrosion and other deficiencies, which could
cause an unsafe condition.
3. As far as practical, close all building doors and windows and all
doors between the space in which the appliance(s) connected to
the venting system are located and other spaces of the building.
4. Close fireplace dampers.
5. Turn on clothes dryers and any appliance not connected to the
venting system. Turn on any exhaust fans, such as range hoods and
bathroom exhausts, so they are operating at maximum speed. Do
not operate a summer exhaust fan.
6. Follow the lighting instructions. Place the appliance being
inspected into operation. Adjust the thermostat so appliance is
operating continuously.
7. Test for spillage from draft hood equipped appliances at the draft
hood relief opening after 5 minutes of main burner operation. Use
the flame of a match or candle.
8. If improper venting is observed during any of the above tests, the
venting system must be corrected in accordance with the National
Fuel Gas Code, ANSIZ223.1/NFPA 54 and/or CSA B149.1
Natural Gas and Propane Installation Code.
9. After it has been determined that each appliance connected to the
venting system properly vents when tested as outlined above,
return doors, windows, exhaust fans, fireplace dampers and any
other gas-fired burning appliance to their previous conditions of
use.

KGAET0201ETK: Installation Instructions
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
10
L13F007A
Fig. 5 – Vent Located Below Floor with Upflow Furnace and Side Venting
L13F007B
Fig. 6 – Vent Located Below Floor with Upflow Furnace and Side Venting
F
B
A
D&E
AIR FLOW
FLOOR
JOISTS
Representative drawing only, some models may vary in appearance
HG
SLOPEUPTO
TERMINATION
1/4-IN. PER FOOT
Two inch pipe shown.
When another size pipe is
used, discard the 2-in. tee
in the kit and use a field
supplied tee that is the
same diameter as the pipe
being used.
F
D&E
CONFIGURATION FOR VENT AND / OR COMBUSTION AIR PIPIING
AIR FLOW
FLOOR
JOISTS
Representative drawing only, some models may vary in appearance
G
B
H
(See NOTES in Figure 1)
A
SLOPE UP TO
TERMINATION
1/4-IN. PER FOOT
Two inch pipe shown.
When another size pipe is
used, discard the 2-in. tee
in the kit and use a field
supplied tee that is the
same diameter as the pipe
being used.

KGAET0201ETK: Installation Instructions
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
11
L13F008A
Fig. 7 – Vent Located Below Floor with Downflow Furnace and Side Venting
L13F008B
Fig. 8 – Vent Located Below Floor with Downflow Furnace and Side Venting
Representative drawing only, some models may vary in appearance
APPROVED
SUB--BASE OR
COIL CABINET
TO CODE--APPROVED DRAIN
OR CONDENSATE PUMP
F
D&E
FLOOR
JOISTS
G
B
A
AIR FLOW
H
SLOPEUPTO
TERMINATION
1/4-IN. PER FOOT
Two inch pipe shown.
When another size pipe is
used, discard the 2-in. tee
in the kit and use a field
supplied tee that is the
same diameter as the pipe
being used.
Representative drawing only, some models may vary in appearance
CONFIGURATION FOR VENT AND / OR COMBUSTION AIR PIPIING
(See NOTES in Figure 1)
APPROVED
SUB--BASE OR
COIL CABINET
TO CODE--APPROVED DRAIN
OR CONDENSATE PUMP
F
D&E
FLOOR
JOISTS
G
B
A
H
AIR FLOW
SLOPE UP TO
TERMINATION
1/4-IN. PER FOOT
Two inch pipe shown.
When another size pipe is
used, discard the 2-in. tee
in the kit and use a field
supplied tee that is the
same diameter as the pipe
being used.

KGAET0201ETK: Installation Instructions
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
12
L13F009
Fig. 9 – Vent Located Below Floor with Upflow Furnace and Through-the-Cabinet Venting
L13F010
Fig. 10 – Vent Located Below Horizontal Furnace
Representative drawing only, some models may vary in appearance
TO CODE--APPROVED DRAIN
OR CONDENSATE PUMP
F
D&E
FLOOR
JOISTS G
B
H
USE MEDIA CABINET ADAPTER OR
CONSTRUCT AN ADAPTER BOX
(FURNACE CANNOT BE SET ON
FLOOR DUE TO SERVICEABILITY)
AIR FLOW
CONFIGURATION FOR VENT AND / OR COMBUSTION AIR PIPIING
(See NOTES in Figure 1)
COMBUSTION AIR INLET PIPE MAY TERMINATE IN
WELL VENTILATED CRAWL SPACE (VENTILATED
COMBUSTION AIR) OR EXTERNAL TO STRUC
-
TURE. TRAP KIT MAY ALSO BE APPLIED.
SLOPE UP TO
TERMINATION
1/4-IN. PER FOOT
Two inch pipe shown.
When another size pipe is
used, discard the 2-in. tee
in the kit and use a field
supplied tee that is the
same diameter as the pipe
being used.
Representative drawing only, some models may vary in appearance
TO CODE--APPROVED DRAIN
OR CONDENSATE PUMP
F
D&E
FLOOR JOISTS
G
B
H
CONFIGURATION FOR VENT AND / OR COMBUSTION AIR PIPIING
(See NOTES in Figure 1)
AIR FLOW
SLOPEUPTO
TERMINATION
1/4-IN. PER FOOT
Two inch pipe shown.
When another size
pipe is used, discard
the 2-in. tee in the
kit and use a field
supplied tee that is
thesamediameteras
thepipebeingused.

KGAET0201ETK: Installation Instructions
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
13
L12F028
Fig. 11 – Application of Trap Kit to Combustion Air Pipe Located Above Furnace
L12F029
Fig. 12 – Combustion Air and Vent Pipe Diameter Transition Location and Elbow Configuration
Representative drawing only, some models may vary in appearance
TO CODE--APPROVED DRAIN OR CONDENSATE PUMP
Two inch pipe shown. When another size pipe is used,
discard the 2-in. tee in the kit and use a field supplied tee
that is the same diameter as the pipe being used.
Representative drawing only, some models may vary in appearance
AIR FLOW

©2020 Carrier. All rights reserved.
A Carrier Company
Edition Date: 04/20 Catalog No:AG-KGAET-06
Replaces:AG-KGBET-01
KGAET0201ETK: Installation Instructions
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
14