CT80-250
Direct Vent - Installation & Operation Instructions
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Odyssey
23
Figure 7-
4
Figure 7-
5
Air Inlet
Connection
Air Inlet
Connection
Flange
Direct Vent Installation Instructions
Vent Location - Under normal operating conditions, the boiler will vent plumes of white
flue gases; therefore, code restrictions and potential hazards associated with thru-wall
installations should be considered before selecting a location for the Direct Vent terminal.
To install the Direct Vent Termination Kit for the balanced flue system, complete the steps listed below in
sequence. Note there are two parts to the install, outside prep work and inside connections:
PART A: Outside
1.
Vent Location - Select a suitable location for the
vent terminal. It is highly recommended that the
vent terminal be located where it will not be
exposed to normal prevailing winds. See NFPA 31
(USA), CSA B139 (Canada) for code clearances.
2.
Exterior Surface - Ensure that the outside wall
surface is flat and meets the installation clearances.
See Table 7-1 and Figure 7-1.
3.
Vent Hole - Cut a rectangular hole, 5.5” wide, and
6.5” in height in the exterior wall.
4.
Orientation - Insert the vent terminal through the
rectangular hole into the building so that the 3”
diameter hole for the air intake is facing downward.
See Figure 7-3.
5.
Slope - When installed correctly, the vent terminal
pipe should point slightly uphill in order to drain
water to the outside. If it is not sloped to the outside, flue gases will condense and drain back into the boiler.
6.
Mounting Tabs - Secure the mounting tabs on either side of the vent terminal to the outside of the structure
using 4 x #10 stainless steel screws (field supplied).
7.
Sealing - Using a suitable silicone sealant, seal the gap between the structure and the vent terminal.
PART B: Inside
8.
Bend Bracket Support - Using a screwdriver, bend up the support
bracket located on the top of the unit as shown in Figure 7-4.
9.
Support - Support the back end of the vent terminal by connecting
the support bracket to a joist, or other solid structure, by means of
metal strapping or wire.
10.
Air Inlet Connections - Using the screws provided, attach the air
inlet connection flange to the bottom of the vent terminal.
Figure 7-4.
11.
Heat Shield - The back of the vent terminal is equipped with a
flexible heat shield, bend the flaps to the side, and then bend the heat
shield up, and out of the way as shown in Figure 7-5.
12.
Silicone - Seal the space between the vent terminal and the structure.
Refer to “Sealing”
section for more detailed instructions.
13.
Flex Piping - Install air inlet flex piping (3” flex 10’) over air inlet
connection (Figure 7-5). Secure with a 3”gear clamp included in the
burner kit. Connect other end of flex piping directly to the Riello
burner (or increaser if using a Beckett burner). See Figure 7-7.
14.
Insulated Flex - The boiler can now be connected to the vent
terminal with the help of insulated flex piping. The flex piping is
available in lengths of 5 ft, 10 ft, 15ft, and 20 ft. Ensure the flex
piping is long enough to form long radius bends (no smaller than 1 ft
in radius). If the flex is too long, it can be cut with a hacksaw.
15.
Direct Vent - Assemble Direct Vent as detailed in following section
titled “Sealing”. Use only high temperature silicone provided or
referenced in instructions.
Support Bracket
Mounting Tabs
Heat Shield
Figure 7-
3
3” Hole
