Slant/Fin VSL-160C Part B - Manual (Page 18)

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10.14 - Vertical
termination –
Concentric vent
10.14.1 - Description and
usage
Both combustion air and vent pipes
must attach to the termination kit. The
termination kit must terminate outside
the structure and must be installed as
shown in Figure 10-26.
10.14.2 - 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 Section 10-4.
2. The concentric terminal must
terminate at least 3 feet above the
highest place in which the vent
penetrates the roof and at least 2
feet above any part of a building
within 10 horizontal feet.
3. Locate termination so it is not likely
to be damaged by foreign objects,
such as stones or balls, or subject
to buildup of leaves or sediment.
4. Cut one (1) hole 6 inch diameter
into the structure to install the
termination kit.
5. Install the Concentric vent kit
following the concentric kit
manufacturer’s instruction.
NOTICE Ensure termination location
clearance dimensions are as shown in
Figure 10-26.
NOTICE Ensure termination height is
above the roof surface or anticipated
snow level (12 inches in U.S.A. or
18 inches in Canada) as shown in
Figures 10-26.
CAUTION!!!
DO NOT use fi eld-
supplied couplings to extend
pipes. Airfl ow restriction
will occur and may cause
intermittent operation.
6. Operate the appliance one (1) heat
cycle to ensure combustion air and
vent pipes are properly connected
to the concentric vent termination
connections.
10.14.3 - Vertical
termination installation
1. Determine the best location for the
termination kit (see Figure 10-26).
2. The total length of piping for vent or
air must not exceed the limits given
in Section 10-4.
3. 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 could cause
freezing of 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 animals
e. Do not terminate above any door
or window. Condensate can
freeze, causing ice formations.
f. Locate or guard vent to prevent
condensate damage to exterior
fi nishes.
10 - INSTALLATION - Vent and combustion air
Figure 10-26 Concentric vertical termination
Vent
Combustion
air intake
Minimum
clearance
above snow
level (18”
for Canada)
Maximum 24”
above roof or
snow level)