kozy heat SPRINGFIELD 36 User manual

Hussong Mfg. Co., Inc. • SFD-36 Report No: 0216GF055S • Rev. 01, April 2017
HUSSONG MANUFACTURING CO., INC.
ͷDo not store or use gasoline or other
ammable vapors and liquids in the
vicinity of this or any other appliance.
ͷWHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electrical switch; do
not use any phone in your building.
• Leave the building immediately.
• Immediately call your gas supplier from
a neighbor’s phone. Follow the gas
supplier’s instructions.
• If you cannot reach your gas supplier,
call the re department.
ͷInstallation and service must be performed
by a qualied installer, service agency or
the gas supplier.
WARNING:
FIRE OR EXPLOSION HAZARD
Failure to follow safety warnings exactly
could result in serious injury, death, or
property damage.
This appliance may be installed in
an aftermarket, permanently located,
manufactured home (USA only) or mobile
home, where not prohibited by local codes.
This appliance is only for use with the type
of gas indicated on the rating plate. This
appliance is not convertible for use with
other gases, unless a certied kit is used.
INSTALLER: Leave this manual with the appliance.
CONSUMER: Retain this manual for future reference.
SPRINGFIELD 36
Model SFD-36
Direct Vent Gas Fireplace
Tested &
Listed By
OMNI-Test Laboratories, Inc.
C US
Portland
Oregon USA
Installation and
Operation Manual
English and French installation manuals are
available through your local dealer. Visit our website
www.kozyheat.com or scan the QR code for our mobile app.
Les manuels d’installation en français et en anglais sont
disponibles chez votre détaillant local. Visitez www.kozyheat.
com ou scannez ce code QR pour notre application mobile.
DANGER
HOT GLASS WILL
CAUSE BURNS
DO NOT TOUCH GLASS
UNTIL COOLED
NEVER ALLOW CHILDREN
TO TOUCH GLASS
A barrier designed to reduce the risk of burns
from the hot viewing glass is provided with this
appliance and shall be installed for the protection
of children and other at-risk individuals.

HOMEOWNER REFERENCE 3
Read this manual before installation or operating this appliance.
Please retain this owner’s manual for future reference.
CONGRATULATIONS!
We welcome you as a new owner of a Kozy Heat gas replace. Kozy Heat products are designed with superior components
and materials, and assembled by trained craftsmen who take pride in their work. To ensure you receive a quality product, the
burner and valve assembly are 100 percent test-red, and the complete replace is thoroughly inspected before packaging.
Our commitment to quality and customer satisfaction has remained the same for over 40 years. We offer a complete line of
gas and wood replaces, along with stylish accessories to complement any decor. Adding a replace is one of the best ways
to increase the value of your home, and we are proud to offer a network of dealers throughout the country to help make
your experience everything you imagine. We pride ourselves in being dedicated not only to functionality and reliability, but
also customer safety. We offer our continual support and guidance to help you achieve the maximum benet and enjoyment
from your Kozy Heat gas replace.
Jim Hussong
President
Dudley Hussong
Board Chairman
Homeowner Reference Information
We recommend you record the following information:
Model Name: ____________________________________________
Serial Number: ___________________________________________
Dealership Purchased from: ________________________________
Date purchased/installed: __________________________________
Location of replace: ______________________________________
Dealer phone: ___________________________________________
Notes: ______________________________________________________________________________________________________________
____________________________________________________________________________________________________________________
____________________________________________________________________________________________________________________
____________________________________________________________________________________________________________________
____________________________________________________________________________________________________________________

TABLE OF CONTENTS 5
TABLE OF CONTENTS
TABLE OF CONTENTS.....................................................................5
1.0 INTRODUCTION ......................................................................7
1.1 Appliance Certication ............................................................................. 7
1.2 Requirements for the Commonwealth of Massachusetts............ 7
2.0 SPECIFICATIONS ..................................................................... 8
2.1 Appliance Packaging Components...................................................... 8
2.2 Heating Specications .............................................................................. 8
2.3 Appliance Dimensions.............................................................................. 9
2.4 Safety Barrier Dimensions........................................................................ 10
3.0 FRAMING .................................................................................11
3.1 Appliance Placement Considerations ................................................. 11
3.2 Clearances to Combustibles ................................................................... 11
3.3 Rough Opening/Wall Enclosure ............................................................ 13
3.4 Recess Construction................................................................................... 14
3.5 Vent Termination Framing ....................................................................... 15
4.0 #970 HEAT DUCT KIT ..............................................................16
4.1 Kit Components........................................................................................... 16
4.2 Specications ............................................................................................... 16
4.3 Attach Heat Duct to Fireplace ................................................................ 17
4.4 Install Register Mounting Frame and Junction Box ....................... 17
4.5 Install and Wire Fan Assembly................................................................ 17
4.6 Run and Secure Duct Pipe ....................................................................... 18
4.7 Complete the Installation ........................................................................ 18
4.8 Operating Instructions.............................................................................. 18
4.9 Maintenance................................................................................................. 18
5.0 FACING AND FINISHING......................................................... 19
5.1 Nailing Flange Installation....................................................................... 19
5.2 Mantel and Finishing Requirements.................................................... 20
5.3 #SF36-FTK Finishing Trim Kit................................................................... 21
6.0 GAS LINE CONNECTION ......................................................... 22
6.1 Gas Conversion (sold separately) .......................................................... 22
6.2 Gas Line Installation................................................................................... 22
7.0 TERMINATION LOCATIONS ....................................................23
7.1 Vertical Vent Cap Termination ................................................................ 23
7.2 Minimum Termination Clearances........................................................ 24
8.0 VENTING ..................................................................................25
8.1 Approved Vent Systems............................................................................ 25
8.2 Venting Requirements .............................................................................. 25
8.3 Use of Elbows............................................................................................... 25
8.4 Vent Restriction .......................................................................................... 25
8.5 Vent Installation........................................................................................... 26
8.6 #800-2 Series Direct Vent Termination Kit(s)..................................... 29
8.7 Vent Heat Shield Assembly Installation .............................................. 30
9.0 FIREPLACE SETUP...................................................................31
9.1 Safety Barrier Installation......................................................................... 31
9.2 Glass Frame Assembly............................................................................... 32
9.3 Light Kit .......................................................................................................... 32
9.4 #SF36-500 Log Set Installation............................................................... 33
9.5 Control Board Removal and Installation............................................. 34
10.0 ELECTRICAL INFORMATION ...............................................35
10.1 Electrical Specications.......................................................................... 35
10.2 Wiring Requirements .............................................................................. 35
11.0 OPERATING INSTRUCTIONS................................................36
11.1 Setup Proame 2 IFC Module .............................................................. 37
11.2 Initialize the Control System.................................................................37
11.3 Reset the System for Manual Operation .......................................... 37
11.4 Automatic Safety Restart....................................................................... 37
11.5 Backup Battery Operation .................................................................... 37
11.6 IFC Module Ignition Sequence ............................................................ 38
11.7 Additional Diagnostic Information .................................................... 38
11.8 Remote Control Operation .................................................................. 39
12.0 ADJUSTMENT........................................................................42
12.1 Pressure Testing ........................................................................................ 42
12.2 Burner Flame Adjustments ................................................................... 43
13.0 TROUBLESHOOTING.............................................................45
14.0 MAINTENANCE......................................................................47
14.1 Firebox.......................................................................................................... 47
14.2 Fan (optional)............................................................................................. 47
14.3 Vent System................................................................................................ 47
14.4 Glass Assembly.......................................................................................... 47
14.5 Burner and Pilot System ........................................................................ 48
15.0 REPLACEMENT PARTS LIST..................................................49
LIMITED WARRANTY......................................................................50
LIFETIME WARRANTY .................................................................... 53

INTRODUCTION 7
1.0 INTRODUCTION
1.1 Appliance Certication
Laboratory: OMNI-Test Laboratories in Portland, Oregon
Standards:
ANSI Z21.88-2016/CSA 2.33-2016, Vented Gas Fireplace Heaters
CGA 2.17-M91 (R2014), Gas-Fired Appliances for Use at High Altitudes
This installation must conform with local codes, or in the absence of
local codes, with the National Fuel Gas Code, ANSI Z223.1/NFPA 54,
or the Natural Gas and Propane Installation Code, CSA B149.1.
1.2 Requirements for the
Commonwealth of Massachusetts
The following requirements reference various Massachusetts and
national codes not contained in this manual.
For all sidewall horizontally vented gas fueled equipment installed
in every dwelling, building or structure used in whole or in part for
residential purposes, including those owned or operated by the
Commonwealth and where the side wall exhaust vent termination
is less than (7) feet above nished grade in the area of the venting,
including but not limited to decks and porches, the following
requirements shall be satised:
1.2.1 Installation of Carbon Monoxide Detectors
At time of installation of side wall horizontally vented gas fueled
equipment, the installing plumber or gas-tter shall observe that
a hard wired carbon monoxide detector with an alarm and battery
back-up is installed on the oor level where the gas equipment is
to be installed. In addition, the installing plumber or gas-tter shall
observe that a battery operated or hard wired carbon monoxide
detector is installed on each additional level of the dwelling, building
or structure served by the side wall horizontal vented gas fueled
equipment. It shall be the responsibility of the property owner
to secure the services of qualied licensed professionals for the
installation of hard wired carbon monoxide detectors.
In the event that the side wall horizontally vented gas fueled
equipment is installed in a crawl space or attic, the hard wired carbon
monoxide detector with alarm and battery back-up may be installed
on the next adjacent oor level. In the event that the requirements
of this subdivision can not be met at the time of completion of
installation, the owner shall have a period of thirty (30) days to
comply with the above requirements; provided, however, that during
said thirty (30) day period, a battery operated carbon monoxide
detector with an alarm shall be installed.
1.2.2 Approved Carbon Monoxide Detectors
Each carbon monoxide detector as required in accordance with the
above provisions shall comply with NFPA 720 and be ANSI/UL 2034
listed and IAS certied.
1.2.3 Signage
A metal or plastic identication plate shall be permanently mounted
to the exterior of the building at a minimum of eight (8) feet
above grade directly in line with the exhaust vent terminal for the
horizontally vented gas fueled heating appliance or equipment. The
sign shall read, in print no less the one-half inch (½) in size,“GAS
VENT DIRECTLY BELOW. KEEP CLEAR OF ALL OBSTRUCTIONS”.
1.2.4 Inspection
The state or local gas inspector of the side wall horizontally vented
gas fueled equipment shall not approve the installation unless, upon
inspection, the inspector observes carbon monoxide detectors and
signage installed in accordance with the provisions of 248 CMR 5.08
(2) (a) 1 through 4.
1.2.5 Exemptions
The following equipment is exempt from 248 CMR 5.08 (2) (a) 1
through 4: The equipment listed in Chapter 10 entitled “Equipment
Not Required To Be Vented” in the most current edition of NFPA 54 as
adopted by the Board; and Product Approved side wall horizontally
vented gas fueled equipment installed in a room or structure
separate from the dwelling, building or structure used in whole or in
part for residential purposes.
1.2.6 Manufacturer Requirements
1.2.6.1 Gas Equipment Venting System Provided
When the manufacturer of Product Approved side wall horizontally
vented gas equipment provides a venting system design or venting
system components with the equipment, the instructions provided
by the manufacturer for installation of the equipment and the
venting system shall include:
• Detailed instructions for the installation of the venting system
design or the venting system components; and
• A complete parts list for the venting system design or venting
system.
1.2.7 Gas Equipment Venting
System NOT Provided
When the manufacturer of Product Approved side wall horizontally
vented gas equipment does not provide the parts for venting the
ue gases, but identies“special venting systems”, the following
requirements shall be satised by the manufacturer:
• The referenced “special venting systems”instructions shall
be included with the appliance or equipment installation
instructions and;
• The “special venting systems” shall be Product Approved by the
Board, and the instructions for that system shall include a parts
list and detailed installation instructions.
A copy of all installation instructions for all Product Approved
side wall horizontally vented gas fueled equipment, all venting
instructions, all parts lists for venting instructions, and/or all venting
design instructions shall remain with the appliance or equipment at
the completion of the installation.

8SPECIFICATIONS
2.0 SPECIFICATIONS
2.1 Appliance Packaging Components
Part Number Description
SF36-150 Control Board Assembly
700-203 Manual Gas Shut-o Valve
SF36-500 Log Package
SF36-057T Glass Frame Assembly
SL36-085 5 in (127 mm) Restrictor Plate
700-408 Remote Control
SF36-HHS Vent Heat Shield Assembly
2.1.1 Additional Components Required
Refer to Section 8.0 Venting on page 25 for approved vent systems.
2.2 Heating Specications
Natural Gas Propane
Maximum
Input Rating
35,000 Btu/h (10.3 kW) 35,000 Btu/h (10.3 kW)
Minimum
Input Rating
18,000 Btu/h (5.3 kW) 18,000 Btu/h (5.3 kW)
Manifold Pressure
(High)
3.8”WC
(0.95 kPa)
11”WC
(2.74 kPa)
Manifold Pressure
(Low)
1.1”WC
(0.27 kPa)
2.9”WC
(0.72 kPa)
Orice Size (DMS) #37 #51
2.2.1 Altitude Adjustment
This appliance may be installed at higher altitudes. Please refer to
National Fuel Gas Code ANSI Z223.1/NFPA 54, CSA-B149.1 Natural
Gas and Propane Installation Code, local authorities, or codes having
jurisdiction in you area regarding derate guidelines.
2.2.1.1 US Installations
Refer to the American Gas Association guidelines for the gas
designed appliances derating method. For elevations above 2,000 ft
(610 m), input ratings are to be reduced by 4% for each 1,000 ft (305
m) above sea level.
2.2.1.2 Canadian Installations
When the appliance is installed at elevations above 4,500 ft (1,372
m), the certied high altitude rating shall be reduced at the rate of
4% for each additional 1,000 ft (305 m).

SPECIFICATIONS 9
2.3 Appliance Dimensions
Figure 2.1, Appliance Dimensions
25⁄”
(643mm)
8”
(203mm)
21”
(533mm)
193⁄4”
(502mm)
30”
(762mm)
29⁄”
(752mm)
353⁄4”
(908mm)
2113⁄16”
(554mm) 337⁄16”
(849mm)
11⁄”
(293mm)
36¾”
(933mm)
TOP VIEW
FRONT VIEWLEFT SIDE RIGHT SIDE

10 SPECIFICATIONS
2.4 Safety Barrier Dimensions
WARNING: A barrier designed to reduce the risk of burns from the hot
viewing glass is provided with this appliance and shall be installed for
the protection of children and other at-risk individuals.
If the barrier becomes damaged, the barrier shall be replaced with
Hussong Mfg.’s barriers for this appliance. Only doors certied with the
appliance shall be used.
IMPORTANT: Consider the height of hearth nish material when
building a replace platform. Proper installation of safety barriers
require the bottom of the replace to be level with nished hearth.
Please refer to Section 9.1 Safety Barrier Installation on page 31 for
installation instructions.
SF36A-PSF SF36-RSF
SF36A-MSF SF36R-MSF SF36A-FPDSF
SF36R-FPSF SF36-FRSF
32⁄”
(829mm)
25⁄”
(657mm)
37”
(939mm)
30¼”
(768mm)
30”
(768mm)
32⁄”
(829mm)
25⁄”
(657mm)
37”
(939mm)
37”
(939mm)
30¼”
(768mm)
30¼”
(768mm)
37”
(939mm)
37”
(939mm)
30”
(768mm)

FRAMING 11
3.0 FRAMING
3.1 Appliance Placement Considerations
WARNING: Due to high temperatures, the appliance should be located
out of trac and away from furniture and draperies.
• This appliance must be installed on a level surface capable
of supporting the replace and venting. If possible, place the
replace in a position where the vent terminates between two
studs, eliminating the need for any additional framing.
• This replace may be installed in a bedroom.
• Please be aware of the large amount of heat this replace will
produce when determining a location.
3.2 Clearances to Combustibles
IMPORTANT: The top stand-os brackets provide the required 3-1/2 in
(89 mm) minimum clearance to the header.
• The front face of the unit to the insulation piece and top stand-
o will accommodate typical 1/2 in (12mm) non-combustible
facing material. The facing material will sit on top of the unit
and be pushed back tight against insulation underneath the
top stand-o, allowing the unit front to be ush with non-
combustible facing material.
• For installation of the optional #SF36-FTK, please see Section
5.3 #SF36-FTK Optional Finishing Trim Kit on page 21. The
nishing trim kit must be installed before replace installation.
Table 3.1, Minimum Appliance Clearances to Combustible Material
From appliance top stand-o brackets 0 in 0 mm
From appliance left and right stand-o brackets 0 in 0 mm
From appliance back stand-o brackets 0 in 0 mm
From appliance corners 1/2 in 12 mm
From appliance front 36 in 914 mm
From appliance top to ceiling 29-1/4 in 743 mm
A 45° projection from appliance sides 0 in 0 mm
Appliance sides to an adjacent parallel sidewall 6 in 152 mm
Fireplace enclosure oor to 3/4 in (19 mm) trim 35 in 889 mm
Fireplace enclosure oor to combustible mantel 4 in (102 mm) maximum depth 37 in 940 mm
Minimum height of replace enclosure 59-1/4 in 1505 mm
Figure 3.1, Clearance to Combustibles
1”
(25mm)
59¼”
(1505mm)
45”
(1143mm)
21”
(534mm)
37”
(940mm)
35”
(889mm)
¾” TRIM
(19mm)
4”
(102mm)
4¼”
(108mm)
29¼”
(743mm)
1”
(25mm)
1”
(25mm)
1”
(25mm)
59¼”
(1505mm)
41”
(1041mm)
37”
(940mm)
35”
(889mm)
¾” TRIM
(19mm)
4”
(102mm)
4¼”
(108mm)
29¼”
(743mm)
1”
(25mm)
1”
(25mm)
NON-COMBUSTIBLE ZONE
CLEARANCES TO COMBUSTIBLES - FLEX PIPE
21”
(534mm)
CLEARANCES TO COMBUSTIBLES - RIGID PIPE

12 FRAMING
3.2.1 Typical Installation Options
1¼”
(31mm)
21”
(533mm)
36¾”
(933mm)
66¼”
(1683mm)
14⁄”
(361mm)
½”
(12mm) 32⁄”
(829mm) 46⁄”
(1190mm)
1¼”
(31mm)
21”
(533mm)
36¾”
(933mm)
36¾”
(933mm)
TYPICAL VERTICAL INSTALLATION TYPICAL HORIZONTAL INSTALLATION
TYPICAL CORNER INSTALLATION

FRAMING 13
3.3 Rough Opening/Wall Enclosure
WARNING: Provide adequate clearances around air openings into
the combustion chamber. Provide adequate clearance in front of the
replace for servicing and proper operation.
NOTE: The construction of the replace wall enclosure must comply
with local building codes and all clearances as outlined in this manual.
NOTE: Cold air transfer area. The replace wall enclosure should be
constructed in a manner to prevent cold air from entering the room
and outside walls should be insulated.
FIRE HAZARD: Do NOT install this appliance directly on carpeting,
vinyl, or any other combustible material other than wood.
• Framing dimensions should allow for wall covering thickness
and replace facing materials. Adjust rough opening size as
necessary to maintain minimum clearance requirements.
• When the appliance is installed directly on carpeting, tile, or
other combustible material other than wood ooring, the
appliance shall be installed on a metal or wood panel extending
the full width and depth of the appliance. The bottom of the
replace must be placed directly on a wood or non-combustible
surface (not linoleum or carpet).
• If the replace is to be installed above oor level, a solid,
continuous platform must be constructed below the replace.
• Build the hearth to desired size and height. Floor protection in
front of the replace is not required. Combustible material may
be used if installing a hearth extension. Consider the thickness
of the hearth extension nishing material if building a replace
platform. The bottom of the replace must be level with nished
hearth extension for proper t of the safety barrier.
• If masonry is to be used (optional), prepare the necessary
foundation for the masonry load. A lintel must be used over
the top of the appliance to support the additional weight of
masonry construction.
• If installing the optional heat duct kit, refer to Section 4.0 #970
Heat Duct Kit on page 16.
33½”
(851mm)
36¾”
(933mm)
21”
(533mm)
Figure 3.2, Framing Dimensions

14 FRAMING
3.4 Recess Construction
WARNING: All clearances to venting must be maintained.
Mounting a television above a replace has become a common
practice. Television surface temperatures are aected by mantel
depth, ceiling heights, and wall and mantel construction material.
Most television manufacturers specify in their instructions that a
television should not be installed on, near, or above a heat source.
Television location rests solely on the homeowner. It is the home
owner’s responsibility that the preferred TV mounting and mantel
design will not exceed the listed maximum operation temperature of
their electronic goods.
Tests performed determined that surface temperatures did not exceed
150°F (66°C) when a 4-1/4 in (108mm) deep recess is constructed above
the replace. See illustrations below.
Figure 3.3, Recess Framing
Figure 3.4, Framing Clearances for Recess Construction
33½”
(851mm)
4¼”
(108mm)
59¼”
(1505mm)
21”
(533mm)
36¾”
(933mm)
FIREPLACE ENCLOSURE FLOOR
21”
(534mm)
37”
(940mm)
4¼”
(108mm)
29¼”
(743mm)
59¼”
(1505mm)
NON-COMBUSTIBLE ZONE

FRAMING 15
3.5 Vent Termination Framing
IMPORTANT: Vent cap location must be in compliance with Section 7.2
Minimum Termination Clearances on page 24.
WARNING: DO NOT RECESS THE VENT CAP INTO WALL OR SIDING.
IMPORTANT: Build the hearth to desired size and height. Consider
the thickness of the hearth extension nishing material if building
a replace platform. The bottom of the replace must be level with
nished hearth extension for proper t of the safety barrier.
3.5.1 Vertical Terminations
CAUTION: Cold air transfer area. The surround replace chase
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.
• Follow vent pipe manufacturer’s installation instructions for
vertical terminations.
• A minimum of 1 in (25 mm) clearance on all sides of the vertical
vent pipe must be maintained.
• Attic insulation shields may be insulated using unfaced
insulation products listed as non-combustible per ASTM E 136.
3.5.2 Horizontal Terminations
IMPORTANT: Horizontal vent sections require 1/4 in (6 mm) rise for
every 12 in (305 mm) of travel.
NOTE: Elbows listed with approved vent systems for this appliance vary
in vertical length. Please consult the vent manufacturer’s instructions
to determine the elbow dimension used for installation. Adjust the
wall pass-through rough opening dimensions to maintain clearance
requirements.
NOTE: Wall thimble products that comply with the required 1 in (25
mm) clearance to combustibles must be installed for all horizontal
vent (rigid or exible) runs that pass through interior or exterior
walls. These wall thimble products may be insulated using unfaced
insulation products listed as noncombustible per ASTM E 136.
1. Measure from oor level of the replace to the center of where
the vent pipe will penetrate the wall.
2. Cut and frame an opening in the wall to allow the vent system to
run level through the wall pass-through. A minimum of 1 in (25
mm) on all sides of the horizontal pipe at the wall pass-through
must be maintained.
3. Follow the vent pipe manufacturer’s installation instructions for
vent installation.
Figure 3.5, Vent Termination Locations
21”
(533mm)
41”
(1041mm)
45”
(1143mm)
1”
(25mm)
1”
(25mm)
1”
(25mm)
1”
(25mm)
21”
(533mm)
NATURAL GAS AND PROPANE RIGID PIPE
MINIMUM HORIZONTAL TERMINATION FRAMING
NATURAL GAS AND PROPANE FLEX PIPE
MINIMUM HORIZONTAL TERMINATION FRAMING

16 #970 HEAT DUCT KIT
4.0 #970 HEAT DUCT KIT
CAUTION : Read and follow instructions carefully prior to and during
the installation of the optional heat duct kit.
WARNING: Installation of this heat duct kit and its electrical wiring
must be performed by a qualied service person, and must be in
accordance with local codes, or in the absence of local codes, with the
National Electrical Code, ANSI/NFPA 70, or the Canadian Electrical
Code, CSA C22.1.
Do not substitute the exible heat duct pipe with plastic vent pipe.
4.1 Kit Components
NOTE: A junction box, cover, and hardware must be purchased to
mount the speed control.
(1) 6”(152 mm) diameter exible heat
duct pipe, expandable to 20 ft. (6.10 m)
(2) Mounting brackets
(1) Register mounting frame with collar (11) Sheet metal screws
(1) Register cover with screws (4) Sheet rock screws
(1) Duct collar (3) Flange nuts
(1) Fan assembly (1) Strapping cord
(1) Fan housing cover plate (3) Wire nuts
(1) Speed control mounting bracket (2) Fan wire connectors
(1) Speed control
4.2 Specications
• The appliance is manufactured with (2) heat duct knock-outs.
One, or both, may be utilized.
• The register mounting frame is designed to t between 2”x 4”
stud walls, 16 in (406mm) on center.
• An oval duct pipe (equivalent to 6 in [152 mm] round) can be
used in conjunction with the included 6 in (152 mm) diameter
exible heat duct pipe, included with this kit. It must be
purchased from a HVAC supplier.
• Carefully plan location of duct pipe runs and register in relation
to replace.
Table 4.1, Heat Duct Clearances
From exible duct to combustibles 0 in 0 mm
From air duct to ceiling 2 in 51 mm
Table 4.2, Heat Duct Vent runs
Vent Run Minimum Maximum
Any direction, including
downward
2 ft 609 mm 20 ft 6.1 mm
Figure 4.1

#970 HEAT DUCT KIT 17
4.3 Attach Heat Duct to Fireplace
1. Bend the tabs on replace top up. With circulation holes facing
down, use (3) screws to fasten the tabs to the duct collar.
2. Secure the exible pipe to the duct collar. Verify screws
penetrate both the exible pipe and the duct collar.
3. Do not cover circulation holes on the duct pipe.
4. Position the replace in the desired location.
4.4 Install Register Mounting
Frame and Junction Box
1. The register mounting frame and the fan housing are designed
to t between 2” x 4” stud walls, 16 in (406mm) on center.
Additional framing is required if larger opening exists.
2. Locate and mark the position of the register.
3. Insert the register mounting bracket into the 16 in (406 mm)
opening.
4. Level and adjust the mounting bracket. The sides of the bracket
should be ush with the front of the framing studs, and the front
of the bracket should protrude ½ in from the studs to allow for
½” sheetrock installation.
5. Secure the mounting bracket to framing with the provided (4)
sheetrock screws.
6. Install the junction box on the wall at desired location.
7. The junction box is used to house the speed control assembly,
which controls fan speed and operation.
4.5 Install and Wire Fan Assembly
1. Attach, but do not tighten, ange nuts to the mounting studs on
the back of the register mounting bracket.
2. Align (3) slots on the fan assembly to studs, then slide the fan
into position. Tighten the ange nuts to secure.
3. Slide the included fan wire connectors into the fan terminals.
4. Properly wire the 110 VAC wire to the hot and neutral fan wires,
and the speed control wires, with provided wire nuts.
5. Run 110 VAC to fan speed control, then from the fan speed
control through the romex connector (on the register bracket).
6. Secure grounding wire to the grounding screw installed in
register mounting bracket. Fan must be properly grounded.
Figure 4.2
BLACK BLACK
WHITE
OR
BLACK
WHITE
OR
BLACK
SPEED
CONTROL
WHITE
GROUND GROUNDING SCREW
ROMEX CONNECTOR
BLACK
WHITE
Figure 4.5
Figure 4.3
Grounding
Screw
Figure 4.4

18 #970 HEAT DUCT KIT
4.6 Run and Secure Duct Pipe
4.6.1 Oval Duct Pipe
1. Run the oval and round duct pipe to the register location.
2. Shape the 6 in (152 mm) round duct pipe to t outside the oval
duct pipe. Secure with the screws provided.
3. Slide the oval duct pipe over the oval collar on the register
mounting bracket. Secure with the sheet metal screws provided.
4. OPTIONAL: Secure duct pipe with any additional screws
provided.
4.6.2 Round Duct Pipe
1. Run the round duct pipe to the register location.
2. Shape the 6 in (152 mm) round duct pipe so it will t outside the
oval collar on the register mounting bracket.
3. Slide the round duct pipe until it touches the register mounting
bracket.
4. Position the locking strap around the 6 in (152 mm) duct pipe,
above the crimped metal.
5. Pull the locking strap tight enough to rmly secure the duct
pipe.
4.7 Complete the Installation
1. Install sheetrock or wall nish material as desired before
attaching the register cover and fan housing cover plate.
2. Position the cut-out portion of the fan housing cover plate over
the fan chute to allow air ow. Align the holes in the fan housing
cover plate to the corresponding holes in the register mounting
plate and fan assembly. Secure with (4) screws provided.
3. Slide the speed control through the mounting bracket. Secure
with the mounting nut.
4. Secure mounting bracket to the junction box with the (2) screws
provided.
5. Center the register cover over the fan housing cover plate to
install. Secure register cover to stud wall with the provided
mounting screws.
6. Attach a cover plate (not provided), then install the control knob
for the speed control.
7. Complete the replace installation by following the instructions
included with the replace.
Figure 4.7
Figure 4.6
4.8 Operating Instructions
1. After complete replace installation and subsequent initial burn
period, turn the replace burner ON by following the lighting
instructions included with the replace.
2. Allow the replace to produce heat for approximately 15
minutes.
3. To operate the heat duct fan, turn the wall-mounted speed
control clockwise until it stops. The fan should turn on and be
operating at its highest speed. Adjust the speed to desired air
ow level by turning the speed control knob counter-clockwise
until it ‘clicks’ o.
4.9 Maintenance
• The duct register must be kept clear and unobstructed. Clean
and vacuum as necessary to remove dust, lint, etc. from fan
which will inhibit air ow.
• Detach the register cover and the fan housing cover plate at
least once a year to remove dust, lint, etc. from the fan. More
frequent cleaning may be necessary.
• The replace must be maintained and serviced as outlined in
the unit installation and operating instructions.

FACING AND FINISHING 19
5.0 FACING AND FINISHING
5.1 Nailing Flange Installation
NOTE: Depending on facing material, tabs can be adjusted forward or
backward up to ½ in (13 mm).
CAUTION: Never permanently remove these assemblies from the
replace—they must be secured regardless of nish material used.
1. Remove (2) nailing anges from the right and left side of the
replace.
2. Align nailing ange with holes on outside corners of replace,
with the stand-o anges on the nailing anges facing away
from the replace.
3. Secure the nailing anges to the replace with screws (provided)
through the slots in nailing anges.
4. Bend perforation on nailing ange until parallel with replace
face. Do not bend toward replace face.
5. Position framing stud against the small stand-o (located on
backside of nailing ange). Secure with nails or screws.
• When installed, the nailing anges provide the minimum 1/2 in
(13 mm) clearance from the sides of the replace to framing.
Figure 5.1, Nailing Flange Installation
BACK VIEW BACK VIEW
STAND-OFF FLANGE
NAILING FLANGE INSTALLED
NAILING FLANGE
AS SHIPPED

20 FACING AND FINISHING
5.2 Mantel and Finishing Requirements
5.2.1 Mantel Projections
WARNING: All minimum clearances to combustible material MUST be
maintained.
NOTE: Mantel projections follow 1” (25mm) up (vertical) from the
replace enclosure oor for every 1” (25mm) deeper (horizontal).
• Combustible mantel projections - Minimum Vertical and
Maximum Horizontal : 37 in (940 mm) is the minimum vertical
clearance from the replace enclosure oor to 4 in (102 mm)
maximum depth of a combustible mantel. Combustible mantels
at the minimum vertical clearance may be 0 in (0 mm) to 4 in
(102 mm). Do not exceed the 4 in (102 mm) depth with the
minimum vertical clearance 37 in (940 mm).
• Non-combustible Mantel Projections - Minimum Vertical and
Maximum Horizontal: A minimum vertical clearance of 6 in (152
mm) above the appliance to a maximum 6 in (152 mm) depth
of a non-combustible mantel. Follow projection 1 in (25 mm) up
for every 1 in (25 mm) deeper.
5.2.2 Finishing Recommendations
NOTE: The surface area above the appliance may be aected by high
temperatures emitted from this appliance. To help avoid or reduce the
possibility of the sheetrock to crack, Hussong Mfg. recommends the
following methods:
• Ensure the non-combustible material and sheetrock is dry and
dust free.
• For taping and mudding seams, we recommend heat resilient
tape, mesh and joint compounds, such as Durabond. Mud must
be cured as per manufacturer’s recommendations.
• For a painted surface, use a high quality acrylic latex primer
and nish coat. Avoid at or light-colored paints to prevent
discoloring.
59¼”
(1505mm)
37”
(940mm)
35”
(889mm)
¾” TRIM
(19mm)
4”
(102mm)
29¼”
(743mm)
1”
(25mm)
COMBUSTIBLE FLOOR
NON-COMBUSTIBLE ZONE
MANTEL PROJECTION:
1” (25mm) UP FOR
EVERY 1” (25mm) DEEPER
NOTE: 37”(940mm) is the minimum vertical clearance from the replace
enclosure oor to the maximum 4“ (102mm) depth of a combustible mantel.
COMBUSTIBLE MATERIAL
Figure 5.2, Combustible Mantel Requirements