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CONCENTRIC TERMINATION
Vent Termination Clearances
WARNING
!
CARBON
MONOXIDE
EXPLOSION HAZARD
Failure to follow this warning could result in personal injury,
death, or property damage.
Inlet and outlet pipes may NOT be vented directly above each
other (standard vent terminals).
1. Determine termination locations based on clearances spe-
cified in following steps and as shown in Fig. 7, Fig. 30
through Fig. 35.
2. The vent termination must be located at least 12" (305
mm) above ground or normally expected snow accumula-
tion levels.
3. Do NOT terminate over public walkways. Avoid areas
where condensate may cause problems such as above
planters, patios, or adjacent to windows where steam may
cause fogging.
4. The vent termination shall be located at least 4' (1.2 M)
horizontally from any electric meter, gas meter, gas regu-
lator, and any relief equipment. These distances apply
ONLY to U.S. installations.
5. The vent termination is to be located at least 3' (.91 M)
above any forced air inlet located within 10' (3.1 M); (3.1
M) and at least 10' (3.1 M) from a combustion air intake of
another appliance, except another direct vent furnace in-
take.
6. In Canada, the Canadian Fuel Gas Code takes precedence
over the preceding termination instructions.
Concentric Vent Termination - Kit #
KGAVT0701CVT & KGAVT0801CVT
These kits are for vertical or horizontal termination of the
combustion air inlet and the exhaust vent pipes on Category IV
gas- -fired condensing furnaces. The KGAVT0801CVT kit can be
used
for
3"
(76
mm)
KGAVT0701CVT kit can be used for 2" (51 mm) diameter pipe
system. Refer to Table 4 for the correct pipe size for the furnace.
Both the combustion air inlet and the exhaust vent pipes must
attach to the termination kit. The termination kit must terminate
outside the structure and must be installed per the instructions
outlined below for vertical or horizontal termination. Vertical
termination is preferred. Field supplied pipe and fittings are
required to complete the installation.
Vertical & Horizontal Termination
1. Determine the pipe diameters required for the installation
from Table 4 and Fig. 32.
2. Determine the best location for the termination kit. See
Fig. 31 for vertical termination or Fig. 35 for horizontal
termination. Roof termination is preferred since it is less
susceptible to damage, has reduced intake contaminants
and less visible vent vapor. For side wall termination, con-
sideration should be given to: 1) possible damage from the
vapors to plants/shrubs, other equipment and building ma-
terials, 2) possible damage to the terminal from foreign ob-
jects, 3) wind effects that may cause recirculation of flue
products, debris or light snow and 4) visible vent vapor.
POISONING,
FIRE
AND
diameter
pipe
systems.
The
3. Cut one 5" (127 mm) diameter hole through the structure
for the KGAVT0801CVT Kit or one 4" (102 mm) diamet-
er hole for the KGAVT0701CVT Kit .
Kit Contents:
3 in. (76) Rain Cap or 2 in. (51) Rain Cap
3 in. (76) Diameter SDR-26 Pipe, 19-1/2 in. (495) Long or
4 in. (102) Diameter SDR-26 Pipe, 24 in. (610) Long,
2 in. (51) Diameter SDR-26 Pipe, 31-5/8 in. (803) Long or
2-1/2 in. (64) Diameter SDR-26 Pipe, 37-1/8 in. (943) Long,
3 in. (76) Y Concentric Fitting or 2 in. (51) Y Concentric Fitting
Nominal 3 in. (76) or 4 in. (102)
Dia. SDR-26 Pipe
2 in. (51) or 3 in. (76) Dia.
Y Concentric Fitting
Fig. 30 - - Kit Components
Vent
Combustion
Air
Roof Boot/
Flashing
(Field Supplied)
Vent
Note:
Support must be field installed to secure termination kit to structure.
Fig. 31 - - Concentric Vent Roof Installation
4. Dimension D may be lengthened to 60" (1524 mm) max.
or shortened by cutting the pipes to 12" (305 mm) min.
Dimension A will change according to D dimension. (See
Fig. 32).
5. Partially assemble the concentric vent termination kit.
Clean and cement the parts using the procedures for Join-
ing Pipe and Fittings section of the manual. A) Cement the
Y Concentric fitting to the longest of the two straight kit
pipes. (See Fig. 30) B) Cement the rain cap to the shortest
of the straight kit parts. (See Fig. 30).
NOTE: A field supplied stainless steel screw may be used to
secure the rain cap to the pipe instead of cementing when field
disassembly is desired for cleaning (See Fig. 33).
31
2 in. (51) or 3 in. (76) Dia.
Rain Cap
2 in. (51) or 2-1/2 in. (64)
Dia. SDR--26 Pipe
A07719
Maintain 12 in. (304.8mm) min. clear-
ance above highest anticipated
snow level. Max. of 24 in. (609.6mm)
above roof.
Support
(Field Supplied)
45° Elbow
(Field Supplied)
Combustion
Air
25--22--02
A07720
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