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D. Assembly of Crown 80/125mm Concentric Venting
(IMPORTANT - See Section C for 60/100mm Concentric Vent Assembly)
WARNING
Failure to follow the instructions could result in flue 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 60/100mm terminal section and concentric reducing elbow supplied with the boiler are not used in 80/125mm
vent systems. The components listed in Table 7.4b are required for 80/125mm installations and are not supplied
with the boiler. Before starting assembly of an 80/125mm vent system, make sure that the planned installation is in
accordance with the “Vent System Design” section of this manual and that all required 80/125mm vent components
are on hand. These components are available through Crown distributors.
2) Cutting Straight Pipe - The following straight pipe sections may be cut:
Part # Description
230517 19 1/2” Straight
230515 39” Straight
These sections have a plain male end (without beads - see Figure 7.30a). 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 7.30b).
FIGURE 7.30a: CUTTABLE STRAIGHT SECTION
FIGURE 7.30b: NON CUTTABLE STRAIGHT SECTION
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