#CLW-ST R.1 February 2021
Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces
FRAMING
19
3.6 Natural Draft Vent Termination
Rough Framing
The following information applies to all standard, KZK, and vented
cavity options when venting with natural draft. If using Kozy Power
Vent
#KPV, please reference the manual included with the kit.
3.6.1 Vent Termination Framing Requirements
This is a cold air transfer area. The fireplace enclosure must comply
with all clearances as outlined in this manual, and be constructed
in compliance with local building codes. Outside walls should be
insulated to prevent cold air from entering room.
Exterior vent termination location must be in compliance with
Section 6.2 Minimum Natural Draft Termination Clearances on page
Instructions for minimum horizontal termination rough framing
continue on page 19.
IMPORTANT - METAL FAB VENT SYSTEM :
When installing Metal Fab
vent pipe, an adapter must be used. This will increase the minimum
height for the center of the vent pipe by 3-1/4” (83mm) when framing
the wall pass through for horizontal terminations.
3.6.1.1 Clearances
•
A minimum of 1” (25mm) clearance on all sides of the vertical
vent pipe must be maintained.
•
A minimum of 1” (25mm) clearance from the top surface on the
horizontal pipe at the wall pass-through must be maintained.
•
A minimum of 1” (25mm) clearance on the sides and bottom
surfaces on the horizontal pipe must be maintained.
•
A minimum of 1” (25mm) clearance from any venting to
the enclosure top is required in horizontal vent termination
installations for full enclosure framing. See Figure 3.9.
•
A minimum of 6” (152mm) clearance from any venting to
the enclosure top is required in horizontal vent termination
installations for shelf enclosure framing. See Figure 3.9.
•
The horizontal pipe after the wall pass-through must maintain a
1” (25mm) clearance to combustibles on all surfaces of the pipe.
Figure 3.9, Vent Termination Minimum Framing Clearances
17”
(432mm)
76”
(1930mm)
76”
(1930mm)
17”
(432mm)
1” (25mm) minimum
clearance between venting
and combustible ceiling
required in full enclosure
framing installations
1” (25mm) minimum
clearance between venting
and enclosure sides
required in all installations
6” (152mm) minimum
clearance between venting
and combustible ceiling
required in shelf enclosure
framing installations
Full enclosure framing
Shelf enclosure framing
ALL DESIGN OPTIONS INSTALLATION
Nominal 2”x 4” framing used
