Sidewall Direct Venting; Sidewall Direct Venting Vent/Air Termination - Sidewall; Determine Location - Lochinvar 150 - 500 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.
WARNING Do not connect any other appliance to the
vent pipe or multiple water heaters to a
common vent pipe. Failure to comply could
result in severe personal injury, death, or
substantial property damage.
Installation must comply with local
NOTICE
requirements and with the National Fuel Gas
Code, ANSI Z223.1 for U.S. installations or
CSA B149.1 for Canadian installations.

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 17 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.
18
Failure to
shrubs, plants or
could cause freezing
Figure 4-1A Sidewall Termination of Air and Vent
FROM BOILER
VENT PIPE
CONNECTION
Table 4A Sidewall Vent Kits
Model Kit Number
150 - 199 KIT30045
285 - 500 KIT30046
If using the alternate sidewall termination:
3. The air piping must terminate in a down-turned elbow as
shown in FIG. 4-1B. This arrangement avoids 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.
air
Excessive length exposed to the outside
could cause freezing of condensate in the
vent pipe, resulting in potential water heater
shutdown.
Figure 4-1B Alternate Sidewall Termination of Air and
of
Vent w/Field Supplied Fittings
TO BOILER
INTAKE AIR
CONNECTION
FROM BOILER
VENT PIPE
CONNECTION
TERMINATION
PLATE
Installation & Operation Manual
TO BOILER
INTAKE AIR
CONNECTION
VENT / AIR
TERMINATION
GRADE OR
SNOW LINE
Vent Size
3 inch vent
4 inch vent
BIRD SCREEN
12" MIN
15" MAX
12"
MIN
BIRD
SCREEN
GRADE OR
SNOW LINE
12"
MIN
TO
OVER-
HANG
12"
MIN