90% Furnace Concentric Vent Kit Used with ALL 90% Thru 95% Efficent Furnaces ALL Brands (Horizontal or Vertical Installations)
HORIZONTAL INSTALLATION:
SIDE WALL TERMINATION
1. Determine best location for termination kit.
a. Termination kit positioned where the vent
vapors will not damage plants, shrubs,
air conditioning equipment, or the
existing structure.
b. Termination kit positioned so it will not be
affected by wind, that may allow recirculation
of combustion products, air borne leaves, light snow or fertilizer.
c. Termination kit positioned where it will
not get damaged or be subjected to
foreign objects: stones, balls, etc.
d. Termination kit positioned where the vent
noise will not be objectionable to
abutters.
2. Cut a hole (4
• diameter for 2
• concentric
vent kit or 5
• diameter for 3
• concentric vent
kit).
3. Partially assemble concentric vent
termination kit.
a. Cement the Y concentric fitting to larger
diameter kit pipe (See Figure 1).
b. Cement the rain cap to the smaller
diameter kit pipe (See Figure 1).
4. Install Y concentric fitting and pipe assembly
through the structure
•s hole.
Note: Do not allow insulation or other
materials to accumulate inside pipe
assembly when installing through hole.
5. Install rain cap and small diameter pipe
assembly in Y concentric fitting and large
pipe assembly. Ensure small diameter pipe
is bottomed and cemented in Y concentric
fitting.
6. Secure assembly to structure as shown in
Figure 6, using field supplied metal
strapping or equivalent support material.
Note: Ensure termination location clearance
dimensions are in instructions.
Note: If assembly needs to be extended to
allow side wall thickness requirement, the
two pipes supplied in the kit may be
replaced by using the same diameter, Field
supplied SDR-26 (D2241) pipe. Do not
extend dimension D to more than 60
• (see
Figure 2). DO NOT USE COUPLINGS TO EXTEND PIPE.
7. Cement air inlet vent pipe and exhaust vent
pipe to concentric vent termination assembly. See Figure 6 for proper pipe attachment.
8. Operate boiler through a heating cycle to
ensure air inlet vent pipe and exhaust vent
pipes are properly connected to concentric
vent termination connections.
9. Allow 8
• center-to-center distance between
concentric vent terminations on multiple
boiler installations.
VERTICAL INSTALLATIONS
ROOF TERMINATION
1. Determine the best location for the
termination kit.
Note: A roof termination is less susceptible
to damage. It has reduced chances to intake
contaminants and has less visible vent
vapors.
2. Cut a hole (4
• diameter for 2
• concentric
vent) or 5
• diameter for 3
• concentric vent
kit).
3. Partially assemble concentric vent
termination kit.
a. Cement Y concentric fitting to larger
diameter kit pipe
b. Cement rain cap to smaller diameter kit
pipe
4. Install Y concentric fitting and pipe assembly
through the structure
•s hole and field
supplied roof boot/flashing.
Note: Do not allow insulation or other
material to accumulate inside pipe assembly
when installing through hole.
5. Secure assembly to roof structure as shown
in Figure 4. using field supplied metal
strapping or equivalent support material.
Note: Ensure termination height is above the
roof surface or anticipated snow level (1 ft. in
USA or 1-1/2 Ft. in Canada) as shown in
Figure 3.
Note: If assembly is too short to meet height
requirements, the two pipes supplied in the
kit may be replaced by using same diameter,
field supplied SDR-26 PVC (D2241) pipe. Do
not extend dimension D more than 60
•. Do not use couplings to extend
pipe.
Note: When shortening the length of the
concentric vent, the inner pipe is longer than
the outer pipe. Make sure you cut the same
amount from each pipe. Do not make them
equal in length.
Replaces Part Numbers:
ACVK2-1
06428D387
CARACVK21