38
iV. Venting
E. Concentric Polypropylene Venting (continued)
• Install the roof flashing using standard
practice on the roofing system of the
structure.
• If not already done, assemble the venting
system inside the building. The last
section of pipe needs to be on the same
center line as the terminal and within
19-1/4” of the top edge of the roof
flashing.
• Measure distance “H” from the top edge
of the storm collar to the end of the last
fitting as shown in Figure 28.
• Add 1” to distance “H”. Carefully mark
this length on the pipe as shown in Figure
29.
• Cut the
outer pipe only
at the point
marked in Step (e) using aviation shears,
a hacksaw, or an abrasive wheel cutter.
Be careful to cut the pipe square. De-burr
the cut end with a file or emery cloth.
• Place a mark on the plastic inner pipe
3/8” beyond the end of the outer pipe
(Figure 29). Use a fine tooth hacksaw to
cut the plastic pipe and be careful to cut
the pipe square. De-burr the cut edge of
the plastic pipe with a file or emery cloth.
• Make a mark on the terminal section
1” from the cut end of the outer pipe as
shown in Figure 29.
Figure 29: Cutting Vertical Terminal
Figure 30: Completing Vertical Terminal installation
• Slip the terminal section through the
roof from the outside. Push into the last
section of vent pipe until the mark made
in Step (h) is not longer visible. Secure
the terminal to the last piece of pipe with
three #10 x 1/2” sheet metal screws.
Drill a 1/8” hole through both outer pipes
to start these screws.
Use a drill stop or
other means to ensure that the drill
bit does not penetrate more than 3/8”
into the outer pipe. Do not use a sheet
metal screw longer than 1/2”.
• Secure the terminal section to the inside
of the roof structure using the mounting
bracket provided with the terminal
(Figure 30).
b. Optional Concentric Chimney Chase Installation
Refer to Figure 31.
i.
A vertical concentric vent system can be
installed in an UNUSED masonry chimney.
• The Chimney chase Support Elbow
with attached Mounting Bracket is used
at the base of the chimney. Refer to
Table 12 ‘Concentric Vent Components’
for details. Slip the elbow over the
M10 x 35 screw in the support bracket.
Determine the desired vertical location
of the support elbow in the chimney and
mark the location of the pin, positioned
on the back of the support bracket,
onto the chimney rear wall. Drill a
7/16” diameter x 3-1/2” deep hole in
the marked location, then, insert the
back bracket pin into the hole. The
front of the elbow mounting bracket
should be supported either by bottom
of the opening into chimney or installer
supplied spacer.
•
Construct a weather-tight flat roof to
cover the top of the old chimney. Install
the vertical terminal through this roof
using the flat roof flashing.
F.
Removing the Existing Boiler
For installations not involving the replacement of an
existing boiler, proceed to Step B.
Summary of Contents for Apex APX399
Page 65: ...65 VIII Electrical continued Figure 43 Ladder Diagram ...
Page 66: ...66 VIII Electrical continued ...
Page 67: ...67 Figure 44 Wiring Connections Diagram VIII Electrical continued ...
Page 110: ...110 1P 3 1P 2 1P 1 XIII Repair Parts continued 1C 1D 1E ...
Page 116: ...116 XIII Repair Parts continued ...
Page 118: ...118 XIII Repair Parts continued ...
Page 129: ...129 SERVICE RECORD DATE SERVICE PERFORMED ...
Page 130: ...130 SERVICE RECORD DATE SERVICE PERFORMED ...
