26
VENTING
Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces
#BIR-20-L R.5 June 2020
6.6 Class A Chimney/Masonry
Chimney Conversion
This appliance is approved to be adapted for Class A/masonry
chimney conversion kits utilizing a 4” (102mm) flexible exhaust by any
vent manufacturers listed in Section 6.1 Approved Vent Systems on
page 21.
Before conversion, have the existing installation inspected by a
qualified chimney sweep or professional installer. The existing
chimney system must be in serviceable condition, and functionally
sound. Before proceeding with following installations, check with
local building jurisdiction to verify this type of installation is allowed
in your area.
Follow DIAG. 3 for allowable venting configurations for installation in
existing through-the-ceiling, Class A chimney or masonry chimney.
Route the exhaust gases and intake air through the existing Class A
chimney/masonry chimney.
6.6.1 4” Flex Pipe Venting Configurations
IMPORTANT: Horizontal vent sections require at least 1/4” (6mm) rise
for every 12” (305mm) of travel.
IMPORTANT: Care should be taken when installing flexible pipe to avoid
a tight bend that may cause abrasion or damage to the flexible pipe.
Vent option listed below allows for a minimum of 6” (152mm) to a
maximum of 24” (610mm) horizontal run using rigid or flexible pipe.
Minimum / Maximum with Rigid Pipe Vertical Terminations:
24” (610mm) vertical rise + 90° horizontal elbow + 6” (152mm)
minimum horizontal run + 90° vertical elbow + Retro Connector
+ 10’ (3.05m) minimum length of 4” aluminum flexible pipe / 50’
(15.24m) maximum length of 4” aluminum flexible pipe + top
a termination cap
DIAG.3 4” FLEX PIPE CHIMNEY CONVERSION
TOP ADAPTER
4” (101mm) FLEX PIPE
RETRO CONNECTOR
TERMINATION CAP
(2) 90° ELBOW
24”
(610mm)
6”
(152mm)