Sears N9MP1 Installation Instructions Manual page 40

Vertical termination is preferred. Field supplied pipe and fittings are
required to complete the installation.
Figure 44 Kit Components
Kit Contents:
3² ² ² ² Rain Cap or 2² ² ² ² Rain Cap
1
3² ² ² ² Diameter SDR- 26 Pipe, 19 / ² ² ² ² Long or
2
1
4² ² ² ² Diameter SDR- 26 Pipe, 37 / ² ² ² ² Long,
8
5
2² ² ² ² Diameter SDR- 26 Pipe, 31 / ² ² ² ² Long or
8
1
2 / ² ² ² ² Diameter SDR- 26 Pipe, 24² ² ² ² Long,
2
3² ² ² ² Y Concentric Fitting or 2² ² ² ² Y Concentric Fitting
2 or 2
2² ² ² ² or 3² ² ² ² Dia.
SDR- 26 Pipe
Y Concentric Fitting
Vertical & Horizontal Termination
1. Determine the pipe diameters required for the installation
from Table 10 and Table 11 and Figure 46.
2. Determine the best location for the termination kit. See
Figure 45 for vertical termination or Figure 45 and
Figure 49 for horizontal termination. Roof termination is
preferred since it is less susceptible to damage, has re-
duced 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) vis-
ible vent vapor.
3. Cut one 5² diameter hole through the structure for the
NAHA001CV Kit or one 4² diameter
NAHA002CV Kit .
4. Dimension D may be lengthened to 60² max. or shortened
by cutting the pipes to 12² min. Dimension A will change ac-
cording to D dimension. (See Figure 46)
Figure 45 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.
40
3
1 / ² ² ² ²
16
3² ² ² ² or 4² ² ² ² Dia.
SDR- 26 Pipe
2² ² ² ² or 3² ² ² ² Dia.
1
/ ² ² ² ² Dia.
2
Rain Cap
25--22--03
hole for the
Maintain 12² ² ² ² min. clearance above
highest anticipated snow level. Max.
of 24² ² ² ² above roof.
Support
(Field Supplied)
45° ° ° ° Elbow
(Field Supplied)
Combustion
Air
25--22--02
Concentric Vent Dimensional
Figure 46
Drawing
B PVC
Vent/Exhaust
1
1 / ² ² ² ²
2
B
PVC Intake/Combustion Air
Model A*
7
NAHA001CV 38 /
8
3
NAHA002CV 33 /
8
* = Dimension will change accordingly as dimension D is
lengthened or shortened.
** = Dimension D may be lengthened to 60² may also be
shortened by cutting the pipes provided in the kit to 12²
minimum
Concentric Termination Kit
Table 10 NAHA001CV & NAHA002CV Venting
Table for *9MPD Models
50,000, 75,000 & 80,000 Btuh Furnaces
NAHA002CV - - 35¢ & (4) 90° elbows with 2² PVC pipe or
NAHA001CV - - 65¢ & (4) 90° elbows with 3² PVC pipe
100,000 Btuh Furnace
NAHA001CV - - 35¢ & (4) 90° elbows with 3² PVC pipe or
NAHA001CV - - 65¢ & (4) 90° elbows with 3² PVC pipe &
Long Vent Kit (See Tech. Manual)
125,000 Btuh Furnace
NAHA001CV - - 35¢ & (4) 90° elbows with 3² PVC pipe
1. Do not include the field supplied 45° elbow in the total elbow
count.
2. If more than four elbows are required, reduce the length of
both the inlet and the exhaust pipes five feet for each
additional elbow used.
3. Elbows are DWV long radius type for 2
NOTE: Feet of pipe is whichever pipe run is the longest, either
inlet or outlet side.
C
D
A
25- 22- 03
B C D**
1 1
3 4 / 21
2
1 7
2 3 / 16
2
and 3 vents.
² ²
440 01 1020 02
/
8
/
8