Sidewall Direct Venting Vent/Air Termination - Sidewall; Determine Location - Cadet 40-120 Installation And Service Manual

4
Sidewall direct venting
Vent/air termination – sidewall
Follow
WARNING
determining vent location to avoid
possibility of severe personal injury, death,
or substantial property damage.
A gas vent extending through an exterior
WARNING
wall shall not terminate adjacent to a wall
or below building extensions such as eaves,
parapets, balconies, or decks. Failure to
comply could result in severe personal
injury, death, or substantial property
damage.

Determine location

Locate the vent/air terminations using the following
guidelines:
1. The total length of piping for vent or air must not exceed
the limits given in the General Venting Section on page
16 of this manual.
2. You must consider the surroundings when terminating
the vent and air:
a. Position the vent termination where vapors will
not damage nearby shrubs, plants or air
conditioning equipment or be objectionable.
b. The flue products will form a noticeable plume as
they condense in cold air. Avoid areas where the
plume could obstruct window views.
c. Prevailing winds
condensate and water/ice buildup where flue
products impinge on building surfaces or plants.
d. Avoid possibility of accidental contact of flue
products with people or pets.
e. Do not locate the terminations where wind eddies
could affect performance or cause recirculation,
such as inside building corners, near adjacent
buildings or surfaces, window wells, stairwells,
alcoves, courtyards, or other recessed areas.
Figure 4-1A PVC/CPVC/Polypropylene
Termination of Air and Vent w/Field Supplied Fittings
TO BOILER
INTAKE AIR
CONNECTION
FROM BOILER
VENT PIPE
CONNECTION
TERMINATION
PLATE
BIRD SCREEN
22
instructions below when
could cause freezing
Sidewall
BIRD SCREEN
12" MIN
15" MAX
12"
MIN
GRADE OR
SNOW LINE
If using the sidewall termination:
3. The air piping must terminate in a down-turned elbow
as shown in FIG. 4-1A.
recirculation of flue products into the combustion air
stream.
4. The vent piping must terminate in an elbow pointed
outward or away from the air inlet, as shown in FIG. 4-1A.
Do not exceed the maximum lengths of the
WARNING
outside vent piping shown in FIG. 4-1A.
Excessive length exposed to the outside
could cause freezing of condensate in the
vent pipe, resulting in potential boiler
shutdown.
When venting out a sidewall using PVC, CPVC, or
Polypropylene vent materials, an optional sidewall vent
termination kit can be ordered (reference Table 4A for kit
numbers).
Table 4A Alternate Sidewall Vent Kit
Kit
Model
Number
40 - 100 KIT30044
120 KIT30045
Figure 4-1B Alternate PVC/CPVC/ Polypropylene
of
Sidewall Termination of Air and Vent
FROM BOILER
VENT PIPE
CONNECTION
Installation & Service Manual
This arrangement avoids
Air Vent Centerline
Size Size
2" 2"
3" 3"
TO BOILER
INTAKE AIR
CONNECTION
VENT / AIR
TERMINATION
GRADE OR
SNOW LINE
Width
5 5/8"
5 5/8"
12"
MIN
TO
OVER-
HANG
12"
MIN