Dettson Chinook C15-M-V Instructions D'installation Et Manuel Du Propriétaire page 23

and fitting socket (over primer). Apply cement in a
light, uniform coat on the inside of socket to prevent
build-up of excess cement. Apply second coat.
11. While cement is still wet, twist pipe into the socket
with 1/4" turn. Be sure the pipe is fully inserted into
the fitting socket.
12. Wipe excess cement from the joint. A continuous
bead of cement will be visible around perimeter of
a properly made joint.
13. Handle pipe joints carefully until cement sets.
14. Horizontal portions of the venting system shall be
supported to prevent sagging. Support any piping
at a minimum of every 5 ft. using perforated metal
hanging strap or commercially available hangars
designed to support plastic pipe.
15. Prevent condensate from accumulating in the pipes
by sloping the combustion air piping and vent piping
downward toward furnace a minimum of 1/4" per
linear ft. with no sags between hangers.
16. Complete the vent installation by installing the
required termination.
allowed termination.
17. Use appropriate methods to seal the openings
where combustion air pipe and vent pipe pass
through roof or sidewall.
7.9 COMBUSTION AIR PIPE
CONNECTION
Chinook gas furnaces have three possible locations for
the combustion air connection : top panel, right side
panel or left side panel. Choose which configuration is
best suited for your application. See figures 18 and 19.
To connect the combustion air pipe, use the venting
flange with the gasket and screw it to the chosen location.
Secure the combustion air pipe to the flange using glue.
At the combustion air termination, use a 90° elbow or two
medium-radius sweep elbows to keep the inlet downward
and prevent the entry of rain. The inlet opening of the
combustion air termination must be a minimum of 12"
above the anticipated level of snow accumulation.
The furnace may have a drain tee assembly and trap
installed in the combustion air pipe as close to the
furnace as possible (see figure 17). This is to drain any
water that may enter the combustion air pipe, preventing
entry in the furnace vestibule area.
Note that with horizontal combustion air pipe there is a
risk of excessive moisture entering the combustion air
pipe and consequently, furnace cabinet. A moiture trap
should be added to the combustion air pipe as shown in
figure 17.
See figures 22 to 26 for
Figure 17 – Combustion air moisture trap
Figure 18 – Top panel combustion air
Figure 19 – side panel combustion air
7.10 VENT TERMINATION
All clearance specified in this manual are in accordance
with the current CSA B149.1, Natural and Propane
Installation Code and the current ANSI Z223.1/NFPA 54,
National Fuel Gas Code. For clearance not specified
in these codes, clearance should be in accordance with
local installation codes and the requirements of the gas
supplier and the instructions in this manual.
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