Determine Location - Lochinvar FTxl 400 Installation & Operation 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.
WARNING Do not connect any other appliance to the
vent pipe or multiple boilers to a common
vent pipe except as noted in Section 3
on page 20.
result in severe personal injury, death, or
substantial property damage.
Sidewall venting commercial products will
CAUTION
result in large exhaust plumes in cold
climates. Consideration should be taken
when locating in proximity to windows,
doors, walkways, etc.
Installation must comply with local
NOTICE
requirements and with the National Fuel
Gas Code, NFPA 54 / 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
18 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 fl ue 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 fl ue
products impinge on building surfaces or plants.
d. Avoid possibility of accidental contact of fl ue
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.
24
instructions below when
Failure to comply could
could cause freezing
Installation & Operation Manual
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 fi nishes.
Figure 4-1A PVC/CPVC/
Termination of Air and Vent w/Field Supplied Fittings
3. The air piping must terminate in a down-turned elbow
as shown in FIG. 4-1A.
recirculation of fl ue 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. 4-1B.
Excessive length exposed to the outside could
cause freezing of condensate in the vent pipe,
resulting in potential boiler shutdown.
Figure 4-1B PVC/CPVC/Polypropylene Sidewall
Termination of Air and Vent
of
Table 4A Sidewall Vent Kits
Model Kit #
400 - 600 KIT30046 4" (102 mm) 4" (102 mm) 5 5/8" (143 mm)
725 - 850 KIT30048 4" (102 mm) 6" (152 mm) 7 3/4" (197 mm)
Polypropylene Sidewall
This arrangement avoids
Centerline
Air Vent
Width