Initial Installation
QUALIFIED INSTALLERS ONLY
Installation of Top Vented; Horizontal Termination:
This is the most common type of installation style. Set the unit in place.
Install a minimum 24” (61 cm) vertical chimney.
Install a 90° elbow, and mark the exterior wall where the vent would pass through.
Cut a 10” (25.4 cm) minimum hole in the wall to maintain clearances to combustibles around vent pipe. Frame hole if as shown in Figure 26.
Install wall thimble.
Install interior finished collar
Install the vent section through the wall and then install the vent termination.
Seal around the termination using a non hardening mastic.
CORNER INSTALLATION:
This type of installation can be used in a corner installation. If a 90° elbow is used in the horizontal plane, 36” (91.4 cm) must be subtracted from the allowable horizontal run shown in Figure 23.
Installation of Top Vented; Vertical Termination:
Termination |
Inside |
finished collar |
Wall thimble |
Vent pipe |
Drywall |
Exterior wall |
Siding |
Figure 43: Installation for Top Vented; Horizontal Termination.
Place the unit in place.
Drop a plumb bob from the ceiling to the center point of the flue outlet.
Cut a 10” (25.4 cm) hole in the ceiling and the roof. Refer to Figure 30.
Install the ceiling support and insulation guard.
Install the roof flashing. Ensure that the roof flashing is installed under the roofing material so that a watertight seal is created.
Install the flue pipe from the top of the unit through the roof.
Ensure that all flue pipe and unit maintain required clearances to combustibles.
CORNER INSTALLATION:
This type of installation can be used in a corner installation. If a 90° elbow is used in the horizontal plane, 36” (91.4 cm) must be subtracted from the allowable horizontal run shown in Figure 23.
Vent cap
Roof flashing 
Roof |
truss |
Insulation |
gaurd |
Ceiling |
support |
Inside |
finished collar |
Flue pipe |
Figure 44: Installation for Top Vented;
Vertical Termination.
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