kozy heat KZK-1510A User manual

READ ALL THESE STEPS BEFORE STARTING
INSTALLATION. LEAVE THESE INSTRUCTIONS
WITH THE APPLIANCE.
This kit must be installed by a qualied installer,
service agency, or gas supplier at the time of the
heater installation. These instructions must be used
in conjunction with the installation and operation
manual provided with the appliance. Please read
the appliance owner’s manual completely before
performing any procedures in these instructions.
INSTALLER: Leave this manual with the appliance.
CONSUMER: Retain this manual for future reference.
This optional convection duct kit redistributes the
warm air ow away from the replace opening to
a more desirable location using natural convection
without the use of a fan. The warm air ow may be
relocated to a position higher up the wall, out the
sidewalls, or even to an adjacent room. The result is
much cooler wall temperatures above the replace
opening for locating televisions, artwork, etc.
English and French installation manuals are available through your local
dealer. Visit our website www.kozyheat.com.
Les manuels d’installation en français et en anglais sont disponibles chez
votre détaillant local. Visitez www.kozyheat.com .
Hussong Manufacturing Co., Inc.
204 Industrial Park Drive, PO Box 577
Lakeeld, MN 56150-0577, USA Rev. 9, December 2021
1.0 INTRODUCTION.......................................................................3
1.1 Kit Contents..........................................................................................3
1.2 Fireplace Preparation........................................................................3
1.3 Suggested Congurations..............................................................4
1.4 Dimensions and Overview .............................................................7
1.5 Air Duct Pipe Run............................................................................... 8
2.0 FRAMING AND CLEARANCES................................................9
2.1 Clearance to Sprinkler......................................................................9
2.2 Framing................................................................................................10
2.3 Shelf Requirements.........................................................................14
2.4 CLW-ST Front Facing Clearances ................................................16
3.0 FACING AND FINISHING.......................................................17
3.1 Non-combustible Requirements................................................17
3.2 Combustible Finish..........................................................................20
3.3 Hearth and Mantel Clearances....................................................24
4.0 INSTALLATION .......................................................................27
KOMFORT ZONE KIT
#KZK-1510A
For use with models
#BHM-38, #BHM-44, #CLW-ST, #CLW-50,
#CLW-50-MV

Kit Contents–Fireplace Preparation
SECTION 1 INTRODUCTION
3
#KZK-1510A
R.9, December 2021
HUSSONG MFG. CO., INC. KOZY HEAT FIREPLACES
1.1 Kit Contents
ALL kit contents must be installed.
• (2) 15" plenum kit: #KZK-1510A
• (2) air grilles
• (8) 6" collars - (4) to attach to the bottom of the plenum; (4) to
attach to the unit where the cover plates are removed.
(1) KZK-410-6 (sold separately) is used for a 10' vent run. If you are
mounting the plenum above the replace 10' (3m) or less, use (1)
#KZK-410-6 kit.
KZK-CPL6 is (6) 6" couplers that connect (2) KZK-410-6. You will only
need (4) 6" couplers for installation. If you are mounting the plenum
above the replace between 10' to 20', you will need (2) KZK-410-6 kit
and (1) #KZK-CPL6 coupler kit.
1.0 INTRODUCTION
1.2 Fireplace Preparation
1.2.1 BHM-38 & BHM-44 Requirements
For ease of installation, the header heat shield may be removed.
The stand-o assembly still must be installed. To install stand-o
assembly,
1. Locate the stand-o assembly and header heat shield on top of
the replace, as shipped.
2. Discard header heat shield.
3. Attach the stand-o assembly pieces as shown below and secure
with (4) screws.
Discard header heat shield
Stand-o
assembly
(4) - 10’x 6” (aluminum ex) listed to UL-181Class 0 Air Duct
(sold separately)
#KZK-410-6
15¾”
(400mm)
11¾”
(298mm)
(4) take o collars included
#KZK-1510A
FIGURE 1.3 BHM-38 & BHM-44 Stand-o Assembly Installation
FIGURE 1.2 #KZK-410-6
FIGURE 1.1 #KZK-1510A

Suggested Congurations
SECTION 1 INTRODUCTION
#KZK-1510A
R.9, December 2021
4HUSSONG MFG. CO., INC. KOZY HEAT FIREPLACES
1.3 Suggested Congurations
When installing the #KZK-1510A, take in consideration the replace
venting and the plenum tube conguration.
The (2) plenums and the (2) air grilles in this kit are required and both
must be installed.
#KZK-1510A side wall outlet
#KZK-1510A rear wall outlet
CLW-50 & CLW-50-MV
FIGURE 1.4 #KZK-1510A Suggested Congurations for CLW-50

Suggested Congurations
SECTION 1 INTRODUCTION
#KZK-1510A
R.9, December 2021
5
HUSSONG MFG. CO., INC. KOZY HEAT FIREPLACES
#KZK-1510A front wall outlet
Access/front
side
Fixed/back
side
CLW-ST
FIGURE 1.5 #KZK-1510A Suggested Conguration for CLW-ST

Suggested Congurations
SECTION 1 INTRODUCTION
#KZK-1510A
R.9, December 2021
6HUSSONG MFG. CO., INC. KOZY HEAT FIREPLACES
#KZK-1510A side wall outlet
#KZK-1510A rear wall outlet
BHM-38 & BHM-44
For side wall outlet installations, it is easier to keep the 1/2”(12mm) clearance if
the center tubes are assembled to the backside of the KZK
FIGURE 1.6 #KZK-1510A Suggested Congurations for BHM-44

Dimension
SECTION 1 INTRODUCTION
#KZK-1510A
R.9, December 2021
7
HUSSONG MFG. CO., INC. KOZY HEAT FIREPLACES
1.4 Dimension
7⁄”
(198mm)
13½”
(342mm) 3”
(76mm)
12”
(304mm)
5⁄”
(149mm) 8⁄”
(220mm)
4”
(102mm)
6”
(152mm)
1½”
(38mm)
¾
(19mm)
stando
stando
#KZK-1510A
FIGURE 1.7 #KZK-1510A Dimensions

Air Duct Pipe Run
SECTION 1 INTRODUCTION
#KZK-1510A
R.9, December 2021
8HUSSONG MFG. CO., INC. KOZY HEAT FIREPLACES
1.5 Air Duct Pipe Run
IMPORTANT: The air duct pipe cannot run horizontally without a
vertical rise.
IMPORTANT: The 1/2" clearance around the air duct pipes must be
maintained.
Use #KZK-410-6 UL181 Class 0 Air Duct piping to connect the plenum(s)
to the unit.
Hussong Mfg. requires pipes to be listed as UL181 Class 0 Air Duct to
connect the plenum(s) to the unit.
• Maximum vent run: 20' (6m)
WHEN INSTALLING AIR DUCT PIPE MAINTAIN A MINIMUM 4" VERTICAL RISE FOR EVERY 12" HORIZONTAL RUN
12”
(304mm)
4”(102mm)
Minimum bend radius=5” (127mm)
CLW-50 & CLW-50-MV
12”
(304mm)
4”(102mm)
Minimum bend radius=6” (152mm)
BHM-38 & BHM-44
12”
(304mm)
4”(102mm)
Minimum bend radius=5” (127mm)
CLW-ST
FIGURE 1.8 Minimum Vent Pipe Run - only (1) plenum shown

Clearance to Sprinkler
SECTION 2 FRAMING AND CLEARANCES
#KZK-1510A
R.9, December 2021
9
HUSSONG MFG. CO., INC. KOZY HEAT FIREPLACES
2.0 FRAMING AND CLEARANCES
2.1 Clearance to Sprinkler
• In a situation where a sprinkler head is installed within the
proximity to a #KZK discharge opening, the diagram below
MUST be followed.
• The distance between a sprinkler head and discharge opening
cannot be less than 60" (1524mm) in length at every point from
the origin of the discharge opening. You must also verify the
sprinkler head sensor is set to the proper heat setting so it does
not activate when the room heats up from the replace being
operated normally.
• Please follow local building codes to determine what
temperature setting is relevant for your installation.
3”
(76mm)
MIN
60”
(1524mm)
MIN
ALL MODELS
Ceiling
sprinkler head
FIGURE 2.1 KZK Clearance to Sprinkler

Framing
SECTION 2 FRAMING AND CLEARANCES
#KZK-1510A
R.9, December 2021
10 HUSSONG MFG. CO., INC. KOZY HEAT FIREPLACES
2.2 Framing
Shown in this section are rough opening dimensions and clearances
for the plenums, unit installation, and unit installation with a TV
recess construction.
Rough opening framing dimensions should allow for wall covering
thickness and facing materials.
½”
(12mm)
½”
(12mm)
3”
(76mm)
1½”
(38mm)
Ceiling
ALL MODELS
FIGURE 2.2 Minimum Clearances for Plenum Air Discharge to Ceiling

Framing
SECTION 2 FRAMING AND CLEARANCES
#KZK-1510A
R.9, December 2021
11
HUSSONG MFG. CO., INC. KOZY HEAT FIREPLACES
76”
(1930mm)
48”
(1219mm) 64½”
(1638mm)
22”
(559mm)
44½”
(1130mm)
4¼”
(108mm)
76”
(1930mm)
64½”
(1638mm)
22”
(559mm)
44½”
(1130mm)
4¼”
(108mm)
Steel Framing Required
Steel Framing Required
CLW-50 & CLW-50-MV
8¼”
(209mm)
18”
(457mm)
74½”
(1892mm) 66¼”
(1683mm)
76”
(1930mm)
22”
(558mm)
STEEL
FRAMING
Plenum rough opening
Height and Width
Unit and plenum
side view
CLW-50 & CLW-50-MV
FIGURE 2.4 CLW-50 Unit Wall Enclosure Rough Opening
FIGURE 2.3 CLW-50 Rough Opening and Framing for #KZK-1510A Dimensions reect minimum enclosure height
Dimensions reect minimum enclosure height

Framing
SECTION 2 FRAMING AND CLEARANCES
#KZK-1510A
R.9, December 2021
12 HUSSONG MFG. CO., INC. KOZY HEAT FIREPLACES
76”
(1930mm)
43¼”
(1098mm)
64½”
(1638mm)
17”
(559mm)
Ceiling/Fireplace enclosure top
Single vertical
header
CLW-ST
8¼”
(210mm) 18”
(457mm)
74½”
(1892mm)
66¼”
(1683mm)
17”
(432mm)
18”
(457mm)
Ceiling
Plenum rough opening
Unit and plenum side view
CLW-ST
FIGURE 2.6 CLW-ST Unit Wall Enclosure Rough Opening
FIGURE 2.5 CLW-ST Rough Opening and Framing for #KZK-1510A
Dimensions reect minimum enclosure height
Dimensions reect minimum enclosure height

Framing
SECTION 2 FRAMING AND CLEARANCES
#KZK-1510A
R.9, December 2021
13
HUSSONG MFG. CO., INC. KOZY HEAT FIREPLACES
60½”
(1537mm)
88”
(2235mm)
46¼”
(1175mm)
57⁄”
(1463mm)
22”
(558mm)
4¼”
(108mm)
88”
(2235mm)
46¼”
(1175mm)
Double horizontal
header
Ceiling/Fireplace enclosure top
Ceiling/Fireplace
enclosure top
TV Recess
BHM-44
8¼”
(209mm)
18”
(457mm)
86½”
(2197mm) 78¼”
(1988mm)
88”
(2235mm)
22”
(558mm)
Plenum rough opening
Height and Width
Unit and plenum
side view
BHM-44
FIGURE 2.8 BHM-44 Unit Wall Enclosure Rough Opening
FIGURE 2.7 BHM-44 Rough Opening and Framing for #KZK-1510A
Dimensions reect minimum enclosure height
Dimensions reect minimum enclosure height

Framing
SECTION 2 FRAMING AND CLEARANCES
#KZK-1510A
R.9, December 2021
14 HUSSONG MFG. CO., INC. KOZY HEAT FIREPLACES
60½”
(1537mm)
88”
(2235mm)
43¼”
(1098mm)
4¼”
(108mm)
22”
(558mm)
51⁄”
(1311mm)
88”
(2235mm)
43¼”
(1098mm)
Ceiling/Fireplace enclosure top
Ceiling/Fireplace
enclosure top
Double horizontal
header TV recess
BHM-38
8¼”
(209mm)
18”
(457mm)
86½”
(2197mm) 78¼”
(1988mm)
88”
(2235mm)
22”
(558mm)
Plenum rough opening
Height and Width
Unit and plenum
side view
BHM-38
FIGURE 2.10 BHM-38 Rough Opening and Framing for #KZK-1510A
FIGURE 2.9 BHM-38 Unit Wall Enclosure Rough Opening Dimensions reect minimum enclosure height
Dimensions reect minimum enclosure height

Shelf Requirements
SECTION 2 FRAMING AND CLEARANCES
#KZK-1510A
R.9, December 2021
15
HUSSONG MFG. CO., INC. KOZY HEAT FIREPLACES
2.3 Shelf Requirements
• The drawings in this section show the framing requirements if
you desire the air discharge opening to be located within the
bump-out or bookshelf framing.
2.3.1 CLW-50 & CLW-50-MV Requirements
NOTE: For the CLW-50, take careful consideration in the dierence
of the minimum chamber height of the replace compared to the
minimum height of the shelf enclosure.
7”
(178mm)
MIN
22”
(559mm)
MAX
76”
(1930mm)
MIN
2”
(51mm)
MIN
76”
(1930mm)
MIN
82¾”
(2102mm)
MIN
7”
(178mm) MIN
18”
(457mm)
MIN
3”
(76mm)
MIN
22”
(559mm)
MIN
22”
(559mm)
MIN
3”
(76mm)
MIN
7”
(178mm)
MIN
82¾”
(2102mm)
MIN
18”
(457mm)
MIN
Ceiling
Enclosure Top
Grille
Enclosure Floor Enclosure Floor
Grille
CLW-50 & CLW-50-MV
FIGURE 2.11 CLW-50 Shelf Requirements

Shelf Requirements
SECTION 2 FRAMING AND CLEARANCES
#KZK-1510A
R.9, December 2021
16 HUSSONG MFG. CO., INC. KOZY HEAT FIREPLACES
2.3.2 BHM-38 & BHM-44 Requirements
3”
(76mm)
MIN
0”(0mm)
MIN
18”
(457mm)
MIN
16”
(406mm)
MIN
22”
(559mm)
MAX
88”
(2235mm)
MIN
0”(0mm)
MIN
18”
(457mm)
MIN
16”
(406mm)
0”(0mm) MIN
88”
(2235mm)
MIN
BHM-38 & BHM-44
Grille
Enclosure Top
Enclosure Floor
Ceiling
Enclosure Floor
Grille
FIGURE 2.12 BHM-38 & BHM-44 Shelf Requirements

CLW-ST Front Facing Clearances
SECTION 2 FRAMING AND CLEARANCES
#KZK-1510A
R.9, December 2021
17
HUSSONG MFG. CO., INC. KOZY HEAT FIREPLACES
2.4 CLW-ST Front Facing Clearances
FIGURE 2.13 below shows the front facing clearance requirements for
the CLW-ST for the KZK-1510A air discharge opening.
2”
(51mm)
18”
(457mm)
76”
(1930mm)
2”
(51mm)
FIGURE 2.13 CLW-ST Front Facing Clearances

Non-combustible Material Requirements–CLW-50 & CLW-50-MV
SECTION 3 FACING AND FINISHING
#KZK-1510A
R.8, October 2021
18 HUSSONG MFG. CO., INC. KOZY HEAT FIREPLACES
3.0 FACING AND FINISHING
3.1 Non-combustible Material
Requirements
21½”
(545mm)
66”
(1676mm)
6⁄”
(161mm)
48¾”
(1238mm)
53½”
(1359mm)
16¾”
(425mm)
10½”
(267mm)
Combustible Finishing
Material Allowed
Non-Combustible Finishing Material Only
Steel Framing Required
Lower Cover Panel
Combustible Finishing Material Allowed
Non-combustible
nishing material only
Combustible nishing
material allowed
Combustible nishing material
allowed. See image below for
acceptable screw locations.
3¾”
(95mm)
13”
(330mm)
9¾”
(248mm)
1½”
(38mm)
13”
(330mm) 3¾”
(95mm)
No Screws Allowed No Screws Allowed
No Screws Allowed
Non-Combustible Finishing Material Only
Screw Pattern Locations
FIGURE 3.1 Minimum Non-combustible Finishing Dimensions
CLW-50 & CLW-50-MV

Non-combustible Material Requirements–CLW-ST
SECTION 3 FACING AND FINISHING
#KZK-1510A
R.8, October 2021
19
HUSSONG MFG. CO., INC. KOZY HEAT FIREPLACES
7”
(178mm)
16¾”
(425mm)
67½”
(1714mm)
18”
(457mm)
53½”
(1359mm)
45¼”
(1149mm)
10½”
(267mm)
Combustible nishing
material allowed
Non-combustible nishing material only
Lower cover panel
Combustible nishing material allowed
Non-combustible
nishing material only
Combustible nishing
material allowed
Combustible nishing material
allowed. See image below for
acceptable screw locations.
59½”
(1512mm)
2½”
(64mm)
1½”
(38mm)
9¾”
(248mm)
Non-combustible nishing material only
No Screws Allowed
No Screws Allowed
Screw Pattern Locations
FIGURE 3.2 CLW-ST Minimum Non-combustible Finishing Dimensions
CLW-ST

Non-combustible Material Requirements–BHM-38
SECTION 3 FACING AND FINISHING
#KZK-1510A
R.8, October 2021
20 HUSSONG MFG. CO., INC. KOZY HEAT FIREPLACES
42⁄”
(1072mm)
2½”
(64mm)
38½”
(978mm)
24⁄”
(633mm)
8⁄”
(205mm)
1½”
(38mm)
54⁄”
(1387mm)
Non-combustible nishing material only
Combustible nishing material allowed
Non-combustible nishing material only Combustible nishing material allowed
FIGURE 3.3 Minimum Non-combustible Finishing Dimensions
BHM-38