Sidewall Direct Venting; Sidewall Direct Venting Vent/Air Termination - Sidewall; Determine Location - Lochinvar 151 Installation & Operation Manual

4

Sidewall direct venting

Vent/air termination – sidewall
Follow instructions below when determining
WARNING
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.
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 22
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
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.
Sidewall vent and air inlet terminations
WARNING
must terminate in the same pressure zone.
f. Do not terminate above any door or window.
Condensate can freeze, causing ice formations.
g. Locate or guard vent to prevent condensate damage
to exterior finishes.
Figure 4-1A PVC/CPVC/Polypropylene Sidewall Termination
of Air and Vent
FROM BOILER
VENT PIPE
CONNECTION
24
Failure to
shrubs, plants or
could cause freezing
TO BOILER
INTAKE AIR
CONNECTION
12"
MIN
TO
OVER-
HANG
VENT / AIR
TERMINATION
12"
MIN
GRADE OR
SNOW LINE
Installation & Operation Manual
Table 4A Sidewall Vent Kits
Model Kit Number
151 - 200 KIT30045
286 - 601 KIT30046
701 - 801 KIT30048
If using the alternate sidewall termination:
3. The air piping must terminate in a down-turned elbow
as shown in FIG. 4-1B.
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. 4-1B.
Do not exceed the maximum lengths of the
WARNING
outside vent piping shown in FIG. 4-1B.
Excessive length exposed to the outside
could cause freezing of condensate in the
vent pipe, resulting in potential water heater
shutdown.
air
Figure 4-1B Alternate PVC/CPVC Sidewall Termination
of Air and Vent w/Field Supplied Fittings
TO BOILER
INTAKE AIR
CONNECTION
of
FROM BOILER
VENT PIPE
CONNECTION
TERMINATION
PLATE
Vent Size
3 inch vent
4 inch vent
6 inch vent
This arrangement avoids
BIRD SCREEN
12" MIN
15" MAX
12"
MIN
BIRD
SCREEN
GRADE OR
SNOW LINE