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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 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.
The 60/100mm terminal section and concentric reducing elbow supplied with the boiler are not used in 1)
80/125mm vent systems. The components listed in Table 7.3b 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.
Figure 7.30: Installation Of 80/125 Adaptor On Boiler