Specifications

27
D. Assembly of U.S. Boiler 80/125mm Concentric Venting
(IMPORTANT - See Section C for 60/100mm Concentric Vent Assembly)
WARNING
Failure to follow the instructions could result in 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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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U.S.Boilerdistributors.
2) CuttingStraightPipe-Thefollowingstraightpipesectionsmaybecut:
PartNo. Description
 101163-01  19-1/2"Straight
 101162-01  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