International comfort products C9MPX Installation Instructions Manual page 33

Vertical & Horizontal Termination
1. Determine the pipe diameters required for the installation
from Table 4 and Figure 33.
2. Determine the best location for the termination kit. See
Figure 32 for vertical termination or Figure 36 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, consideration should be given to: 1) possible
damage from the vapors to plants/shrubs, other equipment
and building materials, 2) possible damage to the terminal
from foreign objects, 3) wind effects that may cause
recirculation of flue products, debris or light snow and 4)
visible vent vapor.
Figure 32 Concentric Vent Roof Installation
Vent
Combustion
Air
Roof Boot/
Flashing
(Field Supplied)
Vent
Note:
Support must be field installed to secure termination kit to structure.
3. Cut one 5" (127mm) diameter hole through the structure for
the NAHA001CV Kit or one 4" (101.6mm) diameter hole for
the NAHA002CV Kit
4. Dimension D may be lengthened to 60" (1524mm) max. or
shortened by cutting the pipes to 12" (304.8mm) min.
Dimension A will change according to D dimension. (See
Figure 33)
5. Partially assemble the concentric vent termination kit.
Clean and cement the parts using the procedures for
Joining Pipe and Fittings section of the manual. A) Cement
the Y Concentric fitting to the longest of the two straight kit
pipes. (See Figure 31) B) Cement the rain cap to the
shortest of the straight kit parts. (See Figure 31)
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 Figure 34)
If assembly needs to be extended to meet height or side wall
thickness requirement, the two pipes supplied in the kit may be
replaced by using the same diameter solid, single (no coupling
connections) field supplied SDR−26 PVC (ASTM D2241) pipes.
Do not extend dimension D more than 60"(1524mm). (See
Figure 33)
440 01 1051 02
Maintain 12, (304.8mm) min. clear­
ance above highest anticipated
snow level. Max. of 24, (609.6mm)
above roof.
Support
(Field Supplied)
455 Elbow
(Field Supplied)
Combustion
Air
25-22-02
Specifications are subject to change without notice.
Figure 33 Concentric Vent Dimensional Drawing
B PVC
Vent/Exhaust
,
1
1 /
2
(38.1mm)
B
PVC Intake/Combustion Air
Model A*
3
33 /
8
NAHA002CV
(847.7)
7
38 /
8
NAHA001CV
(987.4)
* = Dimension will change accordingly as dimension D is
lengthened or shortened.
** = Dimension D may be lengthened to 60" (1524mm) may also be
shortened
by cutting the pipes provided in the kit to 12" (304.8mm) minimum
Concentric Termination Kit
Table 4 NAHA001CV & NAHA002CV Venting
Table for *9MPX Models
60,000 Btuh Furnaces
NAHA002CV − 35' (10.7m) & (4) 90° elbows
with 2" (50.8mm) PVC pipe or
NAHA001CV − 65' (20m) & (4) 90° elbows
with 3" (76.2mm) PVC pipe
80,000 Btuh Furnace
NAHA002CV − 35' (10.7m) & (4) 90° elbows
with 2" (50.8mm) PVC pipe or
NAHA001CV − 35' (10.7m) & (4) 90° elbows
with 3" (76.2mm) PVC pipe
100,000 Btuh Furnace
NAHA002CV − 5' (7.6m) & (2) 90° elbows
with 2" (50.8mm) PVC pipe or
NAHA001CV − 35' (10.7m) & (4) 90° elbows
with 3" (76.2mm) PVC pipe
1. Do not include the field supplied 45° elbow in the total elbow
count.
2. If more elbows are required, reduce the length of both the inlet
and the exhaust pipes five feet (1.5m) for each additional
elbow used.
3. Elbows are DWV long radius type for 2
76.2mm) vents.
NOTE: The minimum vent length is 54 (1.5m) of PVC. Feet (mm) of
pipe is whichever pipe length is the longest, either inlet or outlet
side.
Do not use field supplied couplings to extend the pipes.
Airflow restriction will occur and the furnace pressure switch
may cause intermittent operation.
C
D
A
B C D**
1 5
2 3 / 16
2
(50.8) (88.9) (422.3)
1 1
3 4 / 21
2
(76.2) (114.3) (536.6)
and 3 (50.8mm and
" "
/
8
/
8
33