Burnham Water boiler Installation, Operating And Service Instructions page 34

iV. Venting (continued)
iv. Use locking bands (provided with all
fittings) to secure non-cuttable pipe, as well
as fittings, to the boiler collar (see Figure
19).
v. Use the same method to join all remaining
vent components except for the terminal.
Horizontal Vent Termination
4.
a. Standard Concentric Termination
Refer to Figure 20.
Figure 20: Horizontal Concentric Venting
i. Permitted terminals for horizontal venting:
Horizontal (Wall) Terminal, [80/125 mm
(P/N 101808-01), 100/150 mm (P/N
101809-01] - see Table 10.
ii. Concentric Vent components supplied with
the boiler are packed inside boiler carton
and include the following:
• Horizontal (Wall) Terminal,
• Horizontal (Wall) Terminal consists
of Straight section having plain male
end with locking band clamp installed;
Terminal Assembly with offset vent
termination, and Outside Wall Plate,
both riveted on the opposite end; overall
length is approximately 28-1/8".
• Separate Inside Wall Plate
• Two Hardware Bags (each bag contains
four screws and four anchors) to attach
vent terminal Outside Wall Plate to
exterior wall and Inside Wall Plate to
interior wall.

iii. For horizontal (sidewall) installation, the
Horizontal (Wall) Terminal will extend
past outer wall surface by 4¼" (80/125
mm) or 5½" (100/150 mm). See Figure 20
"Horizontal Concentric Venting".
iv. Install the Horizontal (Wall) Terminal:
• Cut a 5½" diameter hole through the
exterior wall opening (for 80/125 mm
concentric vent) or 6½" (for 100/150 mm)
at the planned location of the horizontal
terminal.
• Measure dimension "L" from exterior wall
outer surface to the end of the last fitting.
See Figure 21 'Dimension "L"'.
Figure 21: Dimension "L"
• When factory Horizontal (Wall) Terminal
needs to be shortened, measure dimension
"L" plus 1¼" from inside of the attached
Outside Wall Plate and mark the Horizontal
(Wall) Terminal outer pipe. To achieve a
square cut of the outer pipe, place several
marks around the outer pipe to establish
a cut line. See Figure 22 ' Cutting Vent
Terminal Pipe'.
• Carefully cut the outer pipe at the marked
line using aviation shears, a hacksaw etc.
Ensure the pipe is cut square and cut end is
de-burred.
• Mark the end of the Horizontal (Wall)
Terminal inner polypropylene vent pipe to
extend 3/8" past the cut end of the outer
pipe. To achieve a square cut of the inner
pipe, place several marks around the inner
pipe to establish a cut line.
• Cut off the marked end of inner
polypropylene vent pipe with a fine tooth
blade hacksaw etc. and de-burr. See Figure
22 "Cutting Vent Terminal Pipe.
This pipe can be removed from the
terminal to ease cutting, if desired.