NTI Ti100-200 Installation And Operation Instructions Manual page 11

Ti Series
Figure 3-4(a)
Two-Pipe Roof Top Termination
Two-pipe terminations typically penetrate the roof surface.
An alternative is to use an existing chimney as a chase way.
See Figure 3-11 for more details.
Exhaust
Vent
Chimney
Cap
Existing
Chimney
(used as a
chase way)
Labeling and Identification – Concentric Vent Side Wall Terminations
Figure 3-5(a)
Concentric Vent Side Wall Termination
Insert vent screen between the end of the boiler exhaust vent
and the end cap as shown. The End Cap
Gas Vent Directly Below
Keep Free of Obstructions
Combustion
Air-Inlet
(perimeter)
Warning Plate
Exhaust Vent
Outlet (center)
Labeling and Identification – Roof Top Terminations
Air-Inlet
Flashing
From
boiler
exhaust
To boiler air-
inlet
connection
Concentric
"Y" Fitting
Installation and Operation Instructions │Trinity
Figure 3-4(b)
Concentric Vent Roof Top Termination
To prevent water leakage, install adequate roof weather seal
flashing (not included) around roof penetration as shown.
Exhaust Vent
Air-Inlet
Roof weather
seal flashing
(field supplied)
Support
(field
supplied)
From boiler
exhaust
Figure 3-5(b)
Concentric Vent Detail
Insert vent screen between the end of the boiler exhaust vent
and the end cap as shown. The End Cap must be secured to
the vent pipe via cement or stainless steel screws.
Exterior Wall
Exhaust
Vent
End Cap
24" [610 mm]
from terminal
end cap vanes
To boiler
air-inlet
connection
Combustion
Air Inlet
End Cap
Vanes (typical)
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