Smith XWH 150, Инструкция по эксплуатации

Страница: 24 / 68

24
If using the alternate sidewall termination:
3. The air piping must terminate in a down-turned elbow as
shown in Figure 23. 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 Figure 23.
Do not exceed the maximum lengths of the outside vent piping
shown in Figure 23. Excessive length exposed to the outside
could cause freezing of condensate in the vent pipe, resulting in
potential water heater shutdown.
VENT/ AIR TERMINATION - SIDEWALL
Follow instructions below when determining vent location to
avoid possibility of severe personal injury, death, or substantial
property damage.
A exhaust vent extending through an exterior 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 on Table 9 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 could cause freezing of 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 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 22. PVC/CPVC/Polypropylene Sidewall Termination
of Air and Vent
Table 17. Sidewall Vent Kits
MODEL KIT NUMBER VENT SIZE
150 - 200 100274669 3 inch vent
285 - 600 100274670 4 inch vent
700 - 800 100274671 6 inch vent
Figure 23. Alternate PVC/CPVC Sidewall Termination of Air
and Vent w/Field Supplied Fittings