ACV Prestige CPVC, Руководство пользователя

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23
Direct Vent Installation of Vent/Air Piping
Direct Vent - Vertical Vent and Sidewall Combustion
Air
The installation must conform to the requirements of
the authority having jurisdiction or, in the absence
of such requirements, to the National Fuel Gas
Code, ANSI Z223.1/ NFPA 54, and/or Natural Gas and
Propane Installation Code, CAN/CSA B149.1.
When using an inoperative chimney as a means of a
chase for the vent, the surrounding space within the
chimney cannot be used to draw combustion air or
vent another appliance.
A gas vent extending through a roof should not ter-
minate near an adjacent wall or below any building
extensions such as roof eaves, balconies or decks.
Failure to comply with the required clearances in
this manual could result in severe personal injury,
death or substantial property damage.
NOTICE
NOTICE
WARNING
Determine Termination Location
Locate the vent and combustion air termination using the
following guidelines:
1. The total length of the vent or combustion air piping
must not exceed the limits given in Table 8 on page 8.
Do not include the 90 º elbow or coupling used to ter-
minate the combustion air inlet or vent exterior of
the building when determining the total length of
pipe.
2. The combustion air piping must terminate with a 90 º
elbow. Fig. 21 shows a snorkel termination option.
The combustion air pipe can also terminate using a
90 º elbow directed down or to the left or right as
shown in Fig. 8 page 17 or Fig. 13 page 18. The ter-
mination must be installed 12” [30.5 cm] minimum
above grade / highest anticipated snow level and as
shown in Fig. 8 page 17 or Fig. 13 page 18 or Fig. 21.
3. The vent must terminate vertically with a coupling to
accept the bird screen and must be located 12” [30.5
cm] (18” [45.7 cm] Canada) above the highest anticipat-
ed snow level.
NOTICE
1" Min. [2.5 cm]
From Wall To
Edge of Coupling
-Air
36" Max.
[91.4 cm]
12
"
[3
0.
5
cm
] M
in
.
Ab
ov
e
G
ra
de
/
Hi
gh
es
t
A
nt
ici
pa
te
d
Sn
ow
L
ev
el
12" [30.5 cm]
(18” [45.7 cm
] Canada)
Above the Hig
hest
Anticipated S
now Level
Combustion Air
Termination
Vent Termination
Direct Vent - Vertical Vent and Side Wall Combustion Air
Fig. 21: