42
VENTING
Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces
#BAY-41-MV R.1 July 2021
7.6 Class A Chimney/Masonry
Chimney Conversion Kit
This appliance is approved to be adapted for Class A/Masonry
Chimney conversion with kits utilizing a 4” (102mm) flexible exhaust
by any vent manufacturers listed in Section 7.2 Approved Vent
Systems on page 33.
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. 6 for allowable venting configurations for installation
in existing through-the-ceiling, Class A/masonry chimney. Route the
exhaust gases and intake air through the existing Class A/masonry
chimney.
7.6.1 4” Flex Pipe Venting Configurations
IMPORTANT: Horizontal vent sections require at least 1/4” (6mm) rise
for every 12” (305mm) of travel.
IMPORTANT: The horizontal heat shield included with this fireplace
must be installed when using a 90° elbow off the top of the appliance.
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 options listed below (i, ii, iii) allow for a minimum of 0” (0mm) to
a maximum of 24” (610mm) horizontal run using rigid or flexible pipe.
(i)
Minimum / Maximum Top Vent Vertical Terminations:
Retro Con 10’ (3.05m) minimum length of 4” aluminum
flexible pipe / 50’ (15.24m) maximum length of 4” aluminum
flexible pipe + top a termination cap
(ii)
Minimum / Maximum Rear Vent Vertical Terminations:
Retro Con 10’ (3.05m) minimum length of 4” aluminum
flexible pipe / 50’ (15.24m) maximum length of 4” aluminum
flexible pipe + top a termination cap
(iii)
Minimum / Maximum Top Vent with Rigid Pipe Vertical
Terminations:
90° horizontal 4” x 6-5/8” elbow + maximum of 24” (610mm) of
coaxial 4” x 6-5/8” rigid pipe + Retro Con 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. 6 4” FLEX PIPE CHIMNEY CONVERSION
(A)
Stand-off Brackets
(B)
Stand-off Heat Shields
(C)
90
°
Elbow
(D)
Horizontal Heat Shield
(E)
Retro Connector
(F)
Top Adapter
(G)
Termination Cap
50’
(15.24m)
10’
(3.05m)
24”
(610mm)
maximum
50’
(15.24m)
10’
(3.05m)
50’
(15.24m)
10’
(3.05m)
A
B
C
D
E
F
G
A
B
E
F
G
G
G
A
B
E
F
G
G
ii
iii
i
