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C. Assembly of Crown Concentric Venting
WARNING
Failure to follow the instructions could result in fl ue gas leakage into the combustion air or indoor air,
resulting in unsafe or unreliable operation.
• Do not lubricate concentric gaskets with anything other than water.
• Do not attempt to cut any piping except as permitted in this section. When cutting these sections, make sure
all cuts are square and allow for proper insertion.
• Do not attempt to try to mix this concentric pipe with other venting systems.
1) The components listed in Table 1.6 are required for 80/125mm and 100/150mm installations and are not supplied
with the BWC150/225 boilers. Before starting assembly of the vent system, make sure that the planned installation
is in accordance with the “Vent System Design” section of this manual and that all required vent components are on
hand. These components are available through Crown distributors.
2) Cutting Straight Pipe - The following straight pipe sections may be cut:
80/125 Part # 100/150 Part # Description
230517 230560 19 1/2” Straight
230515 230562 39” Straight
These sections have a plain male end (without beads - see Figure 1.9a). They are always cut from the male end.
Sections not shown on the above list may not be cut. These sections have beads on the male end (Figure 1.9b).
To cut the straight sections listed above refer to Figure 1.10 and the following instructions:
FIGURE 1.9a: CUTTABLE STRAIGHT SECTION
FIGURE 1.9b: NON CUTTABLE STRAIGHT SECTION
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