Two- Stage Multi Position Furnace
Service
Manual
16
440 08 2002 02
17. CONCENTRIC VENT TERMINATION
Vent/Combustion Air Piping Charts
Table 6
Concentric Termination Kit NAHA001CV
& NAHA002VC Venting Table Dual Piping
ONLY
50,000 & 75,000 Btuh Furnaces
NAHA002CV -- 35¢ & (4) 90° elbows with 2² PVC pipe
100,000 & 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
² and 3² vents.
Concentric Vent Roof Installation
Figure 23
Maintain 12² min. clearance
above highest anticipated
snow level. Max. of 24²
above roof.
Combustion
Air
Roof Boot/
Flashing
(Field Supplied)
Combustion
Air
Vent
Vent
Support
(Field Supplied)
45° Elbow
(Field Supplied)
25--22--02
Note:
Support must be field installed to secure termination kit to structure.
Combustion
Air
Vent
Combustion
Air
Figure 24
Concentric Vent Sidewall
Attachment
3² x2² Bushings or
3² x2
1
/
2
² Bushings
If 3² vent not used
(Field supplied)
Vent
45° Elbow
(Field Supplied)
25--22--02
Strap
(Field Supplied)
Flush to
1² max.
Note:
Securing strap must be field installed to prevent movement of termina-
tion kit in side wall.
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