PB Heat Peerless Combi 160, User Manual

Page: 52 / 107

52
8 - INSTALLATION - Vent & combustion air
8.13 - Vertical
termination –
Concentric vent
8.13.1 - 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 40.
8.13.2 - 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 8.3.
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.
8.13.3 - Vertical
termination installation
1. Determine the best location for the
termination kit (see Figure 40).
2. The total length of piping for vent
or air must not exceed the limits
given in Section 8.3.
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.
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 40.
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 40.
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.
Vent
Combustion
air intake
Minimum clearance above snow
Vent
Support
Minimum
clearance above
highest anticipated
snow level.
above roof.
Vent
Combustion
Air
Roof boot /
Combustion
Air
Combustion
Air
Figure 40 - Concentric vertical termination