Camus Hydronics TH082, Инструкция по установке, эксплуатации и обслуживанию

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9
NOTE
Sealed combustion is required when the TH is placed in a
space with other fan-assisted appliances.
2.4 COMBINED COMBUSTION AIR INLET
The TH may be installed with a combined combustion air
inlet.
The combined combustion air inlet pipe sizing can be
calculated using the method shown below:
Equivalent pipe diameter = Sq Root [(d
1
)
2
+ (d
2
)
2
+ (d
3
)
2
+
… + (d
n
)
2
], where d
n
= individual pipe diameter
•
Example: Find the equivalent pipe diameter of
three air inlet pipes, 3” (7.6cm), 3” (7.6cm) and 4”
(10.2cm)
Equivalent pipe diameter = Sq Root[(3)
2
+ (3)
2
+
(4)
2
] = Sq Root(34) = 5.8”, select 6” (15.3cm)
equivalent diameter pipe.
The air inlet point for multiple air inlets must be provided
with an exterior opening which has a free area equal to or
greater than the total area of all air inlet pipes connected to
the common air inlet. This exterior opening for combustion
air must connect directly to the outdoors. The total length of
the combined air inlet pipe must not exceed a maximum of
100 equivalent feet (30.5m). Deduct the restriction in an
area provided by any screens, grills or louvers installed in
the common air inlet point. Screens, grills or louvers
installed in the common air inlet can reduce the free area of
the opening from 25 to 75% based on the materials used.
Calculate and compensate accordingly.
2.5 VENT TERMINATION AND AIR INLET
CLEARANCES
2.5.1 Sidewall Venting
•
The first 3 feet (1m) of vent from the appliance flue
outlet must be readily accessible for inspection.
Figure 5: Sidewall Vertical Configuration
* Always check local codes for minimum distance above
ground or snow levels
Figure 6: Sidewall Horizontal Configuration
* Always check local codes for minimum distance above
ground or snow levels
Location of Vent Termination
1) The total length of vent piping must not exceed the
limits stated in Table 6.
2) The bottom of the vent terminal shall be located at
least 3 feet (1m) above grade or above normal snow
levels. In all cases the appliance shall be installed in
accordance with local codes
3) The TH can vent up to 100 equivalent feet. Elbows
can range from 3 to 5 feet in equivalent length
depending on the centerline radius. Vent sizes are 3”
for Models 82 to 252 and 4” for Models 292 to 502
for equivalent vent lengths of up to 100’.
4) The vent outlet shall terminate at least 12” (0.30m)
away from any forced air inlet. The vent must be at
least 7 feet (2.15m) above grade when located
adjacent to public walkways due to normal formation
of water vapour in the combustion process.
5) The vent outlet MUST NOT terminate below a forced
air inlet at any distance
6) The vent cannot terminate below grade. Position the
vent termination where vapours will not damage
walls or plants or may be otherwise objectionable.
7) The vent terminal shall not be installed closer than 3
feet (1m) from an inside corner of an L-shaped
structure, window well, stairwell, alcove, courtyard or
other recessed area as wind eddies could affect
boiler performance or cause recirculation.
8) DO NOT terminate closer than 4 feet (1.25m)
horizontally and vertically from any electric meter,
gas meter, regulator, relief valve, or other
equipment. In all cases local codes take precedence
9) Position terminations so they are not likely to be
damaged by foreign objects, or exposed to a build-
up of debris.
10) The vent piping must terminate in an elbow pointed
outward or away from the air inlet.
11) Flue gas condensate can freeze on exterior walls or
on the vent cap. Frozen condensate on the vent cap
can result in a blocked flue condition. Keep the vent
cap/terminal clear of snow, ice, leaves, debris etc.
Some discolouration to exterior building surfaces is
to be expected. Adjacent brick or masonry surfaces
should be protected with a rust resistant sheet metal
plate.
12) Perform regularly scheduled inspections to ensure
that the vent terminal is unobstructed.