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)When BWC070, BWC090, or BWC120 boilers are vented using 80/125 venting, the 60/100 terminal section and reducing elbow supplied with the boiler are not used. The components listed in Table 7.4b are required for 80/125mm installations and are not supplied.
The BWC151 is supplied with the following 80/125 components:
a)80/125 Standard Radius Elbow
b)80/125 Terminal Section
Before starting assembly of an 80/125 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. Any components not supplied with the boiler are available through Crown distributors.
FIGURE 7.30a: CUTTABLE STRAIGHT SECTION
FIGURE 7.30b: NON CUTTABLE STRAIGHT SECTION
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