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8. Operateheaterthrough1heatcycletoensurecombustion-airand
ventpipesareproperlyconnectedtoconcentricventtermination
connections.
fIGure G.
MultI-concentrIc vent terMInatIons
Whentwoormoreappliancesaredirectedventedwithconcentric
ventterminations near each other,each appliance must be
individuallyvented.NEVERcommon ventthisappliance. When
twoor more appliances are direct vented using concentric vent
terminations,theappliances maybe ventedasshown inFigureH
andFigureI.
figure h.
Concentric Vent Terminations
forHorizontalDirectVenting.
figure I.
Concentric Vent Terminations for Vertical
DirectVentingthrougharoof.