Instructions / Assembly

CONCENTRIC VENT KITS
Installation Instructions
6.Partially assemble Concentric Vent kit. Follow furnace installation
instructions for cleaning and cementing.
a.Cement “Y” fitting to larger diameter air inlet pipe (Figure 1).
b.Cement combustion air inlet cap to smaller diameter pipe (Figure 1).
7.Install “Y” fitting and pipe assembly through hole.
8.Install combustion air inlet cap and large diameter pipe assembly.
Cement and bottom small diameter pipe in “Y” concentric fitting.
9.Secure to structure (Figure 7) using metal strapping or equivalent
support material (user supplied).
10.Cement furnace combustion air and vent pipes to Concentric Vent.
Refer to Figure 7 for proper pipe attachment.
11.Check installation by allowing furnace to run through one cycle.
NOTE: Keep assembly free of insulation during installation.
NOTE: Maintain clearance dimensions as shown in Figure 4, 5, 6 & 7.
NOTE: If assembly is too short, the 2 pipes supplied in the kit may be
replaced by using same diameter, field supplied SDR-26 PVC
(D2241) pipe. Do not extend pipes with same diameter PVC or
couplings. The additional wall thickness will restrict combustion
air and may cause operational problems. Do not extend air inlet
pipe more than 60” (Figure 7).
CAUTION:
Do not use field supplied couplings to extend pipes.
WARNING:
Recirculation of flue gasses may occur, causing the intake
pipe to freeze shut during cold weather operation if the
venting system is not installed per these guidelines. If the
venting system is not installed properly, flue gas may
recirculate, possibly causing the intake pipe to freeze shut
during cold weather.
Roof Overhang
12” Minimum
36” Minimum
Vent
1”
Combustion air
Maintain 12” clearance
abovehighest anticipated
snow level or grade
Roof Overhang
12” Minimum
Vent
1”
Combustion air
Maintain 12” clearance
abovehighest anticipated
snow level or grade
Roof Overhang
12” Minimum
Vent
1”
Combustion air
Maintain 12” clearance
above highest anticipated
snow level or grade
4” minimum or 24” maximum
(between end bell edges)
Figure 6-Sidewall Termination for
Multiple Horizontal Concentric Vents
Figure 5-Sidewall Termination
Figure 4-Sidewall Termination for
Multiple Vertical Concentric Vents
Concentric Vent Installation Instructions
22152-22153 Concentric Vent Termination
For use with all condensing gas furnace models
General
The Concentric Vent allows both the intake for combustion air and the exhaust
vent to pass through a standard roof or sidewall. This is an alternative to the
standard two pipe intake/vent shown in the basic furnace installation
instructions. Follow these instructions as well as the basic furnace installation
instruction for installation of the intake/vent pipe(s) and all furnace installation
procedures.
Refer to the furnace installation instructions for intake/vent pipe sizing
information.
NOTE: The Concentric Vent reduces the allowable intake/vent piping length by
5 feet from that listed in the basic furnace installation instructions.
NOTE: Securing strap must be field installed to prevent
movement to termination kit in side wall
Combustion air
Vent
1” Combustion
air inlet
vanes to wall
Combustion air
Elbow
(field supplied)
Vent
Strap (field supplied)
Max 60”
Figure 7-Sidewall Termination Details
VERTICAL ROOF MOUNTING
NOTE: Roof mounting is recommended as it allows less intake air contaminants
and reduces ground-level exhaust.
1. Use furnace installation instructions to determine pipe diameter.
2. Determine correct Concentric Vent size for the pipe diameter selected.
3. Determine the best location for the Concentric Vent.
4. Cut a 4” diameter hole for 22152, 2” kit. And cut a 5” diameter hole for
22153, 3” kit.
5. Partially assemble Concentric Vent kit. Follow furnace installation instructions
for cleaning and cementing.
a. Cement “Y” fitting to larger diameter air inlet pipe (Figure 1).
b. Cement combustion air inlet cap to smaller diameter pipe (Figure1).
6. Install “Y” fitting and pipe assembly through hole and roof boot/flashing
(user supplied).
7. Secure to roof (Figure 3) using metal strapping or
equivalent support material (user supplied).
8. Install combustion air inlet cap and small diameter pipe assembly into roof.
Cement and bottom small diameter pipe in “Y” concentric fitting.
9. Cement furnace combustion air and vent pipes to Concentric Vent. Refer to
Figure 3 for proper pipe attachment.
10. Check installation by allowing furnace to run through one cycle.
NOTE: Keep assembly free of insulation during installation.
NOTE: Multiple Concentric Vent kits may be installed vertically following the
same clearances between vent outlets as shown in Figure 6.
NOTE: Termination height must be above roof surface or anticipated snow level
(minimum 12” in U.S. or minimum 18” in Canada) as shown in Figures
2 & 3.
NOTE: If assembly is too short, the 2 pipes supplied in the kit may be replaced
by using same diameter, field supplied SDR-26 PVC (D2241) pipe. Do
not extend pipes with same diameter PVC or couplings. The additional
wall thickness will restrict combustion air and may cause operational
problems. Do not extend air inlet pipe more than 60” (Figure 3).
CAUTION:
Do not use field supplied couplings to extend pipes.
Figure 3-Typical Roof install
Maintain 12” minimum (18” for Canada) clearance above highest
anticipated snow level. maximum of 24
” above roof.
Combustion Air
Roof weather
Seal/Flashing
(field supplied)
Support
(field supplied)
Combustion Air
ElobW
(field supplied)
Max 60”
Vent
1. Shipping dimension. This may be field modified by cutting or extending both
the intake and exhaust pipes. 12” is the minimum allowable length and 60” is
the maximum allowable length for this dimension. SDR-26 PVC (D2241) only
may be used for extending pipes. Do not extend pipes with same diameter PVC
or couplings.
2. This dimension will change if the intake/vent pipes are lengthened or shortened.
NOTICE:
some local code inspectors are not familiar with
concentric vents. Be sure to check local code
requirements and acceptability prior to installation.
Dakota Sourcing, LLC
www.dakotasourcing.com [e-mail]
Do not use the Concentric Vent kit for anything other than
a Category IV furnace. Failure to follow this warning
could result in fire, personal injury or death.
WARNING:
Do not operate the furnace until the installation and assembly
of the Concentric Vent and all piping are completed. Failure
to follow this warning could result in product damage or
improper operation, personal injury or death.
WARNING:
Each concentric vent kit contains the following items:
(1) Combustion Air Inlet Cap
(1) Air Inlet Pipe
(1) Vent Pipe
(1) Intake/Vent Concentric WYE Tee
(1) Installation Instructions on box
Pipe and fittings are required to complete installation (user supplied). The
combustion air and vent pipe fittings must conform to ANSI and ASTM
standards D1785, F891, D2665, D2241, D2661, or F628. Pipe cement and
primer must conform to ASTM standards D2564 or D2235.
Assembled Terminal
4” diameter
air inlet pipe
2-1/2”
diameter
vent pipe
“Y” Concentric Fitting Combustion
air inlet cap
Figure 1-Vent Terminal Assembly
Vent
Maintain12”
minimum (18” for
Canada) clearance
above highest anticipated
snow level. maximum of 24
”
above roof.
Figure 2-Typical Roof Installation
Combustion Air
PRODUCE
COAD
INTAKE/VENT
NOM.PIPE SIZE
OVERALL ASSEM’D
LENGTH1
INTAKE PIPE OUTSIDE
DIAMETER
22152 2” 34-3/4” 3-1/2” 19-1/2”
22153 3” 39-1/8” 4-1/2” 24”
AIR INLET PIPE
LENGTH2
3”or
2”or
HORIZONTAL SIDEWALL MOUNTING
NOTE: Refer to the following items before horizontal installation:
• Check furnace installation istructions for allowable clearances and
locations.
• Refer to Figures 4 & 6 when venting multiple units using multiple
Concentric Vents.
• Avoid locations with high winds.
• Avoid locations where Concentric Vent is likely to be damaged.
• Avoid locations where vapors are objectionable, or may damage the
structure, plants or air conditioning condensing unit.
1.Use furnace installation instructions to determine pipe diameter.
2.Determine correct Concentric Vent size for the pipe diameter selected.
3.Determine the best location for the Concentric Vent.
4.When installing multiple Concentric Vents, refer to the following
guidelines:
a.Do not install multiple Concentric Vents directly above one another
unless separated by a 3’ distance (minimum).
b.Install multiple Concentric Vents where the horizontal distance
between the ends of each air intake is 4” or less or greater than 24”.
This will prevent a recirculation of flue gas.
5.Cut a 4” diameter hole for 22152, 2” kit. And cut a 5” diameter
hole for 22153, 3” kit.