Hearth and Home Technologies Indoor Fireplace ST42A User Manual

Owner’s Manual  
Installation and Operation  
Model:  
ST42A  
See-Through  
Woodburning Fireplace  
CAUTION  
DO NOT DISCARD THIS MANUAL  
Read, understand  
and follow these  
instructions for safe  
installation and  
operation.  
Leave this manual with  
Important operating  
party responsible for  
use and operation.  
and maintenance  
instructions included.  
WARNING  
WARNING  
HOT! DO NOT TOUCH.  
If the information in these instruc-  
tions is not followed exactly, a  
fire may result causing property  
damage, personal injury, or death.  
SEVERE BURNS MAY RESULT.  
CLOTHING IGNITION MAY RESULT.  
Glass and other surfaces are hot  
during operation and cool down.  
• Do not store or use gasoline or other flam-  
mable vapors and liquids in the vicinity of  
this or any other appliance.  
• Do not overfire. Overfiring will void your  
warranty.  
Keep children away.  
CAREFULLY SUPERVISE children in same room  
as fireplace.  
Alert children and adults to hazards of high  
temperatures.  
Keep clothing, furniture, draperies and other  
combustibles away.  
• Comply with all minimum clearances to  
combustibles as specified. Failure to  
comply may cause house fire.  
WARNING  
Installation and service of this fireplace should  
be performed by qualified personnel. Hearth  
& Home Technologies suggests NFI certified  
or factory-trained professionals, or technicians  
supervised by an NFI certified  
Fire Risk  
For use with solid wood fuel or decorative  
gas appliance only.  
Do not install unvented gas logs.  
professional.  
Heatilator • ST42A • 35038 Rev G • 02/05  
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1
Table of Contents  
1
2
Listing and Code Approvals  
8
Finishing  
A. Appliance Certification. . . . . . . . . . . . . . . . . . . . . . . . . 4  
A. Hearth Extension. . . . . . . . . . . . . . . . . . . . . . . . . . . . 24  
B. Finishing Material . . . . . . . . . . . . . . . . . . . . . . . . . . . 25  
C. Mantel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25  
D. Sidewalls/Surrounds . . . . . . . . . . . . . . . . . . . . . . . . . 25  
E. Glass Doors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25  
Getting Started  
A. Design and Installation Considerations. . . . . . . . . . . . 5  
B. Negative Pressure. . . . . . . . . . . . . . . . . . . . . . . . . . . . 5  
C. Typical Fireplace System . . . . . . . . . . . . . . . . . . . . . . 7  
D. Tools and Supplies Needed. . . . . . . . . . . . . . . . . . . . . 8  
E. Inspect Fireplace and Components. . . . . . . . . . . . . . . 8  
9
Operating Instructions  
A. General Information. . . . . . . . . . . . . . . . . . . . . . . . . . 26  
B. Outside Air. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27  
C. Clear Space Near the Fireplace . . . . . . . . . . . . . . . . 27  
D. Flue Damper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27  
E. Firescreen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27  
F. Glass Doors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27  
G. Grate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28  
H. Wood Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28  
I. Starting a Fire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29  
3
Framing and Clearances  
A. Selecting Fireplace Location . . . . . . . . . . . . . . . . . . . . 9  
B. Clearances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10  
C. Sidewalls/Surrounds . . . . . . . . . . . . . . . . . . . . . . . . . 11  
D. Frame the Fireplace . . . . . . . . . . . . . . . . . . . . . . . . . 11  
E. Construct the Chase . . . . . . . . . . . . . . . . . . . . . . . . . 12  
F. Chimney Requirements. . . . . . . . . . . . . . . . . . . . . . . 12  
4
5
Installation of Fireplace  
A. Install the Outside Air Kit . . . . . . . . . . . . . . . . . . . . . . 13  
B. Secure the Fireplace . . . . . . . . . . . . . . . . . . . . . . . . . 14  
10 Troubleshooting  
A. Understanding Vent Problems. . . . . . . . . . . . . . . . . . 30  
B. Diagnostics and Problem Solving . . . . . . . . . . . . . . . 31  
Chimney Assembly  
11 Maintenance and Servicing the Fireplace  
A. Disposal of Ashes . . . . . . . . . . . . . . . . . . . . . . . . . . . 33  
B. Chimney Inspection/Cleaning . . . . . . . . . . . . . . . . . . 33  
C. Firebox Refractory. . . . . . . . . . . . . . . . . . . . . . . . . . . 33  
D. Maintenance Task List. . . . . . . . . . . . . . . . . . . . . . . . 34  
E. Chimney Fire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34  
A. Chimney Requirements. . . . . . . . . . . . . . . . . . . . . . . 16  
B. Using Offsets/Returns . . . . . . . . . . . . . . . . . . . . . . . . 17  
C. Assemble the Chimney Sections. . . . . . . . . . . . . . . . 18  
D. Install the Firestop Spacers. . . . . . . . . . . . . . . . . . . . 18  
E. Install the Attic Insulation Shield . . . . . . . . . . . . . . . . 19  
F. Double-check the Chimney Assembly. . . . . . . . . . . . 19  
G. Secure the Chimney . . . . . . . . . . . . . . . . . . . . . . . . . 19  
12 Reference Materials  
A. Fireplace Dimensions . . . . . . . . . . . . . . . . . . . . . . . . 35  
B. Fireplace Components . . . . . . . . . . . . . . . . . . . . . . . 36  
C. Chimney Components. . . . . . . . . . . . . . . . . . . . . . . . 37  
Woodburning Termination Cap . . . . . . . . . . . . . . . . . 40  
D. Service Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41  
E. Limited Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43  
F. Contact Information. . . . . . . . . . . . . . . . . . . . . . . . . . 44  
6
7
Complete the Enclosure  
A. Chimney Termination. . . . . . . . . . . . . . . . . . . . . . . . . 20  
B. Chase Top . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21  
C. Install the Termination Cap . . . . . . . . . . . . . . . . . . . . 22  
Accessories  
A. Gas Log/Lighter Provisions . . . . . . . . . . . . . . . . . . . . 23  
Note: An arrow () found in the text signifies change in content.  
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3
Listing and Code Approvals  
1
A. Appliance Certification  
WARNING  
This fireplace system has been tested and listed in accor-  
dance with UL 127 standards by Underwriters Laboratories  
Inc. for installation and operation in the United States and  
Canada.  
Improper installation, adjustment, alteration, service  
or maintenance can cause injury or property damage.  
Refer to the owner’s information manual provided with  
this fireplace. For assistance or additional information  
consult a qualified installer, service agency or your  
dealer.  
This fireplace has been tested and listed for use with the op-  
tional components specified in this manual. These optional  
components may be purchased separately and installed at  
a later date. Installation of an outside air kit will require sig-  
nificant reconstruction and is best if installed at the time of  
fireplace installation.  
Not intended for use as a primary heat source.  
Heatilator is a registered trademark of Hearth & Home Tech-  
nologies Inc.  
This fireplace is tested and approved as a decorative fire-  
place. It should not be factored as a primary heat source  
in residential heating calculations.  
WARNING  
Fire Risk  
Do not install or operate damaged fireplace.  
Do not modify fireplace.  
Installation other than as instructed by Hearth & Home  
Technologies Inc. is strictly prohibited.  
Do not operate the fireplace without fully assembling  
all components.  
Do not overfire.  
Do not install an unvented gas log set. This fireplace  
has not been tested for use with unvented gas log  
sets.  
Installation and/or use of any component part not  
approved by Hearth & Home Technologies.  
Hearth & Home Technologies disclaims any responsibility  
for, and the warranty and agency listing will be voided by  
the above actions.  
4
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Getting Started  
2
A. Design and Installation Considerations  
CAUTION  
WARNING  
Asphyxiation Risk  
Negative pressure can cause spillage of  
combustion fumes and soot. Fire needs to draft  
properly for safe operation.  
Check building codes prior to installation.  
Installation MUST comply with local, regional,  
state and national codes and regulations.  
Consult insurance carrier, local building inspector,  
fire officials or authorities having jurisdiction about  
restrictions, installation inspection and permits.  
B. Negative Pressure  
Negative pressure results from the imbalance of air avail-  
able for the fireplace to operate properly. Causes for this  
imbalance include:  
When planning a fireplace installation, it is necessary to de-  
termine the following information before installing:  
Where the fireplace is to be installed. See Sections  
3 and 4.  
Exhaust fans (kitchen, bath, etc.).  
Range hoods.  
Combustion air requirements for furnaces, water heaters  
and other combustion appliances.  
Clothes dryers.  
The vent system configuration to be used. See Sections  
5 and 6.  
Gas supply piping. See Section 7.  
Framing and finishing details. See Sections 3 and 8.  
Whether optional accessories are desired. See  
Section 12.  
Location of return-air vents to furnace or air  
conditioning.  
Imbalances of the HVAC air handling system.  
Upper level air leaks: recessed lighting, attic hatch  
opening, duct leaks.  
Draft is the pressure difference needed to vent fireplaces  
successfully. Considerations for successful draft include:  
To minimize the effects of negative air pressure, the follow-  
ing must be considered:  
Preventing negative pressure  
Location of fireplace and chimney  
Install the outside air kit. Install the intake on the side of  
the house towards prevailing winds during the heating  
season.  
Ensure adequate outdoor air is supplied for combustion  
appliances and exhaust equipment.  
Ensure furnace and air conditioning return vents are not  
located in the immediate vicinity of the fireplace.  
Avoid installing the fireplace near doors, walkways or small  
isolated spaces.  
Recessed lighting should be a “sealed can” design; attic  
hatches weather stripped or sealed; attic mounted duct  
work and air handler joints and seams taped or sealed.  
Basement installations should be avoided due to stack  
effect. Stack effect creates negative pressure in lower  
levels. Hearth & Home Technologies recommends the  
use of direct vent fireplaces in basements.  
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5
Location of the fireplace and chimney will affect performance.  
As shown in Figure 2.1 the chimney should:  
Be installed through the warm airspace enclosed by the  
building envelope. This helps to produce more draft,  
especially during lighting and die-down of the fire.  
Penetrate the highest part of the roof. This minimizes the  
effects of wind turbulence.  
Be located away from trees, adjacent structures, uneven  
roof lines and other obstructions.  
Offsets can restrict draft so their use should be minimized.  
Consider the fireplace location relative to floor and ceiling  
and attic joists.  
Recommended  
Location  
Recommended  
Location  
Marginal  
Location  
Location  
Not  
Recommended  
Location  
Not  
Recommended  
Windward  
Outside Air Intake  
Leeward  
Multi-level Roofs  
Figure 2.1 Recommended Chimney Locations  
6
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C. Typical Fireplace System  
The Heatilator fireplace system consists of the following:  
Fireplace/integral grate/refractory/outside air system  
Chimney termination cap  
Chimney system  
Hearth extension  
Optional components include:  
Glass doors  
Chimney air kit  
Fan kit (circulating fireplaces only)  
Junction box (circulating fireplaces only)  
Additional lateral  
Termination cap  
Storm Collar  
support for chimney  
above roof (or enclosed  
in chase) if needed  
Non-combustible  
roof flashing maintains  
minimum clearance  
around chimney  
Chimney penetrates roof  
preferably without affecting  
roof rafters  
Support straps  
on rafter supports  
chimney (not shown)  
Offset/Return (with hanger straps)  
Attic insulation shield may  
be used here to keep insulation  
away from chimney  
Firestop spacer  
on floor of attic  
Chimney system  
Framing headed off  
in ceiling joists  
Combustible  
framing/header  
on top of  
Enclosed space above  
and around fireplace  
V-shaped  
standoffs  
(spacers)  
Mantel and surround  
Decorative facing  
and trim  
Hearth extension  
Outside  
combustion air  
Factory-built fireplace  
Protective metal  
hearth strip(s)  
Figure 2.2 Typical Fireplace System  
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7
D. Tools and Supplies Needed  
E. Inspect Fireplace and Components  
Before beginning the installation be sure the following tools  
WARNING  
and building supplies are available:  
Reciprocating saw  
Pliers  
Hammer  
Framing material  
High temp caulking material  
Gloves  
Fire Risk  
Explosion Risk  
Inspect fireplace and components for  
damage. Damaged parts may impair safe  
operation.  
Phillips screwdriver  
Framing square  
Flat blade screwdriver Electric drill and bits  
Do NOT install damaged components.  
Do NOT install incomplete components.  
Do NOT install substitute components  
Plumb line  
Level  
Safety glasses  
Tape measure  
Report damaged parts to dealer.  
1/2-3/4 in. length, #6 or #8 self-drilling screws  
Misc. screws and nails  
Carefully remove the fireplace and components from the  
packaging.  
The vent system components and doors are shipped in  
separate packages.  
Report to your dealer any parts damaged in shipment.  
Read all the instructions before starting the installation.  
Follow these instructions carefully during the  
installation to ensure maximum safety and benefit.  
CAUTION  
Keep fireplace dry.  
Mold or rust may cause odors.  
8
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Framing and Clearances  
WARNING  
3
Note:  
Illustrations and photos reflect typical installations  
Fire Risk  
and are FOR DESIGN PURPOSES ONLY.  
Provide adequate clearances.  
Illustrations/diagrams are not drawn to scale.  
Actual installation/appearance may vary due to  
individual design preference.  
Around air openings  
To combustibles  
For service access.  
Hearth & Home Technologies reserves the right to  
alter its products.  
Locate fireplace away from traffic areas.  
Locating the fireplace in a basement, near frequently opened  
doors, central heat outlets or returns, or other locations of  
considerable air movement can affect the performance and  
cause intermittent smoke spillage from the front of the fire-  
place. Consideration should be given to these factors before  
deciding on a location. See Sections 2 and 10.  
A. Selecting Fireplace Location  
Several options are available to you when choosing a loca-  
tion for your fireplace. This fireplace may be used as a room  
divider, installed along a wall, across a corner or used in an  
exterior chase. See Figure 3.1.  
66 in.  
Note: 1/2 in. (13 mm) min. dis-  
tance from fireplace to  
combustible materials.  
(1676 mm)  
42 in.  
(1067 mm)  
(hearth  
extension)  
20 in. (508 mm)  
Note: In addition to these fram-  
ing dimensions, also  
reference the following  
sections:  
Clearances (Sec-  
tion 3.B.)  
Mantel Projections  
(Section 8.C.)  
12 in. (305 mm)  
min. to  
Fireplace Dimensions  
(Section 12.A.)  
perpendicular  
wall.  
64 in.  
(1626 mm)  
Figure 3.1 Fireplace Locations  
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9
B. Clearances  
WARNING  
Fire Risk  
Comply with all minimum clearances to  
combustibles as specified.  
Failure to comply may cause fire.  
Storm Collar  
Roof Flashing  
2 in. (51 mm) min.  
2 in. min.  
(51 mm)  
Attic  
Insulation  
Shield  
(attic)  
Firestop Spacer  
(ceiling)  
2 in. (51 mm) min.  
Firestop Spacer  
2 in. (51 mm) min.  
Offset/Return with  
hanger straps  
(ceiling)  
2 in. (51 mm) min.  
2 in. (51 mm) min.  
Must have 2 in. (51 mm)  
minimum clearance  
to header  
0 in. to level  
of standoffs  
0 in.  
to floor  
1/2 in. (13 mm) to side of appliance  
Figure 3.2 Clearances to Combustible Materials  
10  
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C. Sidewalls/Surrounds  
Adjacent combustible side walls must be located a minimum of 12 in. (305 mm) from the fireplace opening. See Figure 3.3.  
If you are using a decorative surround constructed of combustible material, it must be located within the shaded area de-  
fined in Figure 3.3. Short stub walls are also acceptable if they are contained within the shaded area.  
4 in.  
(102 mm)  
Flush  
Front  
14-3/8 in.  
(365 mm)  
Brick  
Front  
42 in.  
9-3/4 in.  
(1067 mm)  
(opening)  
(248 mm)  
50 deg.  
37 deg.  
48 in.  
(1219 mm)  
(framing)  
12 in.  
(305 mm)  
12 in.  
(305 mm)  
Figure 3.3 Sidewalls and Surrounds  
D. Frame the Fireplace  
Figure 3.4 shows a typical framing (using 2 x 4 lumber) of the fireplace, assuming combustible materials are used. All re-  
quired clearances to combustibles around the fireplace must be adhered to. See Figure 3.2. Any framing across the top of  
the fireplace must be above the level of the top standoffs.  
You must maintain  
2 in. (51 mm) min. air space  
clearance from the  
chimney to the  
enclosure.  
12 in. (305 mm) max.  
Note: Fireplace  
Header cannot be  
positioned until after  
the fireplace assembly  
is in place.  
48 in.  
(1219 mm)  
27 in.  
(686 mm)  
39-1/8 in. (994 mm)  
Figure 3.4 Framing the Fireplace  
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11  
Gas line holes and other openings should be caulked with  
high temperature caulk or stuffed with unfaced fiberglass in-  
sulation. If the fireplace is being installed on a cement slab,  
we recommend that in cold climates, a sheet of plywood or  
other raised platform be placed underneath to prevent con-  
ducting cold up into the room.  
E. Construct the Chase  
A chase is a vertical boxlike structure built to enclose the  
fireplace and/or its vent system. Vertical chimneys that run  
on the outside of a building may be, but are not required to  
be, installed inside a chase.  
Construction of the chase may vary with the type of build-  
ing. These instructions are not substitutes for the require-  
ments of local building codes. Local building codes MUST  
be checked.  
Two examples of chase applications are shown in Fig-  
ure 3.6.  
1. Chimney offset through exterior wall and enclosed in  
chase.  
2. Chase constructed on roof.  
Chases should be constructed in the manner of all outside  
walls of the home to prevent cold air drafting problems. The  
chase should not break the outside building envelope in any  
manner.  
Building codes require false ceiling and firestop spacers at  
each floor of the chase or every 10 ft (3.05 m) of clear space  
to control spread of fire.  
Walls, ceiling, base plate and cantilever floor at the first level  
of the chase should be insulated. See Figure 3.5. Vapor and  
air infiltration barriers should be installed in the chase as per  
regional codes for the rest of the home. Additionally, Hearth  
& Home Technologies recommends that the inside surfaces  
be sheet rocked and taped for maximum air tightness.  
Round Termination Cap  
Metal Chase Top  
2
1
Figure 3.6 Chase Constructions  
Firestop  
Spacer  
F. Chimney Requirements  
When planning your fireplace location, the chimney con-  
struction and necessary clearances must be considered.  
The fireplace system and chimney components have been  
tested to provide flexibility in construction. Vertical distances  
are measured from the base of the fireplace as shown in  
Figure 5.2.  
False Ceiling  
ft meters  
a. Minimum overall straight height  
b. Minimum height with offset/return  
c. Maximum height  
14.0  
16.5  
90.0  
10.0  
4.27  
4.93  
27.43  
3.05  
Attic  
Insulation  
Tabs  
Shield  
d. Maximum chimney length between an offset and  
return  
Firestop  
Spacer  
e. Maximum distance between chimney stabilizers  
f. Double offset/return minimum height  
35.0  
22.0  
10.67  
6.71  
Insulation  
Insulation  
False Ceiling  
Chimney  
g. Maximum unsupported chimney length between the 6.0  
offset and return  
1.83  
False Ceiling  
h. Maximum unsupported chimney height above the  
fi r e p la c e  
35.0  
10.67  
1.83  
Figure 3.5 Chase Assembly  
i. Maximum unsupported chimney above roof  
6.0  
12  
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Installation of Fireplace  
4
WARNING  
CAUTION  
Fire Risk  
Sharp Edges  
Asphyxiation Risk  
Wear protective gloves and safety glasses  
during installation.  
Do not draw outside combustion air from:  
Wall, floor or ceiling cavity.  
Enclosed space such as an attic or  
garage.  
Close proximity to exhaust vents or  
chimneys.  
A. Install the Outside Air Kit  
The outside air kit is supplied as an optional feature with this  
fireplace and its use is highly recommended to minimize the  
effects of negative pressure within the structure. We recom-  
mend you utilize the shortest duct run to optimize the perfor-  
mance of the outside air kit. The outside air kit inlet should  
be positioned at least 4 ft (1.22 m) above the ground level, in  
a manner that will not allow snow, leaves, etc. to block the in-  
let. See Figure 4.1 for proper placement of outside air inlet.  
Fumes or odor may result.  
CAUTION  
Risk of Smoke Spillage  
Outside air inlet must be located to prevent blockage  
from:  
• Leaves  
• Snow/ice  
• Other debris  
The outside air kit is installed on either side of the fireplace.  
See Figure 4.2 for handle location/operation.  
Blockage may cause combustion air starvation.  
NO  
NO  
Outlet blocked by  
snow, leaves, etc.  
Garage or  
NO  
Attic space  
combustible  
liquids storage  
NO  
Outlet placed  
higher than 3 ft  
below the  
termination cap  
YES  
Clear area  
outside  
Factory-built  
fireplace  
house or in  
ventilated  
crawl space  
Use only duct materials specified  
by manufacturer (preferably with  
short run or mainly straight duct,  
except small dip for cold air trap  
which will help prevent flow of cold air.)  
Figure 4.1 Outside Combustion Air Placement  
(Push slider to open.)  
Figure 4.2 Locating the Outside Air Control  
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13  
B. Secure the Fireplace  
• Position the Fireplace  
This fireplace may be placed on either a combustible or  
noncombustible continuous flat surface. Follow the in-  
structions for framing in Section 3.D. Slide the fireplace  
into position. Be sure to provide the minimum air clear-  
ance at the sides and back of the fireplace assembly.  
See Section 3.B.  
WARNING  
Fire Risk!  
Prevent contact with sagging, loose  
insulation.  
Do NOT install against vapor barriers or  
exposed insulation.  
1 in. (25 mm) overlap  
Metal strips are placed 2 in. (51 mm) under the  
front of the fireplace and must extend beyond the  
front and sides of fireplace by 2 in. (51 mm).  
• Place the Protective Metal Hearth Strips  
WARNING  
Figure 4.3 Position the Protective Metal Hearth Strips  
Fire Risk!  
Metal hearth strips MUST be installed.  
Top piece must overlap  
bottom piece  
Sparks or embers may ignite flooring.  
Included with your fireplace you will find four metal  
hearth strips measuring approximately 28 in. x 4 in.  
(711 mm x 102 mm). These strips are used to provide  
added protection where the fireplace and the hearth ex-  
tensions meet.  
Raised Platform  
2 in.  
(51 mm)  
1 in. (25 mm) min.  
overlap  
Floor  
Slide each metal strip 2 in. (51 mm) under the front  
edge of the fireplace. The individual pieces must over-  
lap each other by 1 in. (25 mm) minimum in the middle  
of the fireplace to provide continuous coverage of the  
floor. See Figure 4.3. These metal strips should extend  
from the front and sides of the fireplace opening by 2 in.  
(51 mm).  
2 in.  
(51 mm)  
Figure 4.4 Protect the Front of an Elevated Platform  
Note: When elevating the fireplace above the hearth exten-  
sion the front of the elevated platform must be protected with  
a protective metal hearth strip as shown in Figure 4.4.  
• Level the Fireplace  
Level the fireplace side-to-side and front-to-back. Shim  
with noncombustible material, such as sheet metal, as  
necessary. Secure the fireplace (using the nailing flang-  
es located on either side of the fireplace) to the vertical  
framing.  
Important: To ensure proper fit of the glass doors, check  
the fireplace openings for square. Measure diagonal dis-  
tances of each opening to make sure they are equal. If they  
are not, continue to shim the fireplace until those diagonals  
are equal.  
14  
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Chimney Assembly  
5
Termination Cap  
Chimney must extend  
beyond combustible  
roof structure  
Additional  
support for  
tall chimneys  
Maintain minimum  
height of chimney  
above roof  
Storm Collar  
Install roof flashing  
according to minimum  
requirements  
Maintain minimum  
clearances to  
combustibles as  
specified  
Offsets/returns  
may not exceed  
30° from vertical  
Support straps for offsets/  
returns must be secured  
to adequate framing  
Lock chimney  
sections together  
firmly to resist  
movement  
Firestop spacers  
are required where  
chimney passes  
through ceiling or  
floor  
Figure 5.1 Typical Chimney System - Guidelines for Chimney System Installation  
NOTE:  
Chimney performance may vary.  
Trees, buildings, roof lines and wind conditions affect  
performance.  
Chimney height may need adjustment if smoking or  
overdraft occurs.  
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15  
A. Chimney Requirements  
To determine the chimney components needed to complete  
your particular installation, follow the steps below:  
Vertical distances are measured from the base of the fire-  
place as shown in Figure 5.2.  
Determine the total vertical height of the fireplace  
installation. This dimension is measured from the base of  
the fireplace assembly to the point where the smoke exits  
the termination cap.  
ft meters  
a. Minimum overall straight height  
b. Minimum height with offset/return  
c. Maximum height  
14.0  
16.5  
90.0  
10.0  
4.27  
4.93  
27.43  
3.05  
Subtract the effective height of the fireplace assembly from  
the overall height of the fireplace installation (measured  
from the base of the fireplace to the bottom of the  
termination cap).  
d. Maximum chimney length between an offset and  
return  
e. Maximum distance between chimney stabilizers  
f. Double offset/return minimum height  
35.0  
22.0  
10.67  
6.71  
Refer to Table 5.1 to determine what components must  
be selected to complete the fireplace installation.  
Determine the number of firestop spacers, stabilizers,  
roof flashing, etc. required to complete the fireplace  
installation.  
g. Maximum unsupported chimney length between the 6.0  
offset and return  
1.83  
h. Maximum unsupported chimney height above the  
fi r e p la c e  
35.0  
10.67  
1.83  
i. Maximum unsupported chimney above roof  
6.0  
i
WARNING  
Fire Risk  
Must maintain 2 in. (51 mm) air clearance  
to insulation and other combustible  
materials.  
d & g  
Table 5.1  
h
HEIGHT OF CHIMNEY COMPONENTS  
Chimney Stabilizer  
in.  
mm  
firestop  
SL11  
4-3/4  
121  
Firestop Spacers  
58-7/8 in.  
FS538  
0
0
0
0
(1495 mm)  
a,b,c,f  
Effective  
Height  
FS540  
Offsets/Returns  
SL1130  
14-1/2  
368  
Roof Flashing  
Figure 5.2 Chimney Requirements  
RF570  
0
0
0
0
RF571  
Chimney Sections*  
SL1106  
4-3/4  
10-3/4  
16-3/4  
34-3/4  
46-3/4  
121  
273  
425  
883  
1187  
CAUTION  
SL1112  
SL1118  
Do NOT connect this fireplace to a chimney flue  
servicing another appliance.  
Do NOT connect to any air distribution duct or  
system.  
SL1136  
SL1148  
* Dimensions reflect effective height  
16  
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B. Using Offsets/Returns  
To bypass any overhead obstructions, the chimney may be  
offset using a 30-deg (SL1130) offset/return.  
Measure how far the chimney needs to be shifted to enable  
it to avoid the overhead obstacle. See Figure 5.3. Use  
dimension “A” to determine chimney section required to  
achieve the needed shift.  
After determining the offset dimension, refer to Table 5.2  
and find the “A” dimension closest to but not less than the  
distance of shift needed for your installation.  
The “B” dimension that coincides with the “A” dimension  
represents the required vertical clearance that is needed  
to complete the offset and return.  
Read across the chart and find the number of chimney  
sections required and the model number of those particular  
chimney parts.  
Whenever the chimney penetrates a floor/ceiling, a firestop  
spacer must be installed.  
An offset and return may be attached together or a chimney  
section(s) may be used between an offset and return.  
Perform the following steps to determine the correct chim-  
ney component combination for your particular installation:  
WARNING  
Fire Risk  
Draft will be restricted if offset/returns  
greater than 30° are used.  
The effective height of the fireplace assembly is measured  
from the base of the fireplace to the top of the starter collar.  
See Dimensions in Section 12.  
Table 5.2  
A
B
A
in.  
mm  
in.  
mm  
368  
SL1106 SL1112 SL1118 SL1136 SL1148  
3-7/8  
6-1/4  
9-1/4  
12-1/4  
14-5/8  
17-5/8  
21-1/4  
23-5/8  
27-1/4  
29-5/8  
32-5/8  
35-5/8  
38  
98  
159  
235  
311  
14-1/2  
18-5/8  
23-3/4  
29  
-
1
-
-
-
-
-
-
-
-
-
473  
578  
1
-
-
-
-
B
737  
-
1
-
-
-
371  
448  
540  
600  
692  
752  
829  
905  
965  
1041  
1133  
1194  
33  
838  
-
2
1
-
-
-
38-1/4  
44-5/8  
48-3/4  
55-3/4  
59  
972  
-
1
-
-
-
1133  
1238  
1416  
1499  
1632  
1765  
1870  
-
1
1
-
-
1-1/4 in. (32 mm)  
OVERLAP  
1
-
-
-
-
-
-
1
1
1
1
1
1
1
1
2
Figure 5.3 Chimney Offset/Return  
1
-
-
-
-
64-1/4  
69-1/2  
73-5/8  
1
-
-
-
Example: Your “A” dimension from Figure 5.3  
is 14-1/2 in. (368 mm). Using Table 5.2 the  
dimension closest to, but not less than 14-1/2  
in. (368 mm) is 14-5/8 in. (371 mm) using a 30°  
offset/return. It is then determined from the table  
that you would need 33 in. (838 mm) (Dimension  
“B”) between the offset and return. The chimney  
components that best fit your application are two  
SL1112s.  
-
1
-
-
-
2
1
-
-
41  
78-3/4 2000  
-
1
-
-
44-5/8  
47  
85  
2159  
2264  
2426  
-
1
1
-
89-1/8  
95-1/2  
1
-
-
-
50-5/8 1286  
-
-
Proper assembly of air cooled chimney parts results in an overlap of chimney joints  
of 1-1/4 in. (32 mm). Effective length is built into this table.  
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17  
C. Assemble the Chimney Sections  
Note: The firestop spacer MUST be nailed to the bottom  
of the ceiling joists EXCEPT when the space above is  
uninsulated and the attic insulation shield is not being used  
(see Figure 5.5). When the attic insulation shield is used  
the spacer may be above or below the joist of an insulated  
ceiling.  
Attach either a straight chimney section or an offset to the  
top of the fireplace (depending on your installation require-  
ment). Chimney sections are locked together by pushing  
downward until the top section meets the stop bead on the  
lower section.  
The inner flue is placed to the inside of the flue section below  
it. The outer casing is placed outside the outer casing of the  
chimney section below it. See Figure 5.4.  
ROOM ABOVE (non-insulated ceiling)  
B
A
Spacer from  
bottom  
ATTIC ABOVE (insulated ceiling)  
When attic insulation  
Spacer from  
shield not used  
top  
Figure 5.4 Assembling Chimney Sections  
Note: Inner flue and outer liner sections cannot be disas-  
sembled once locked together. Plan ahead to ensure the  
proper installation height is achieved with the selected  
chimney components.  
Note: Use same dimensional lumber for framing  
spacer and joists.  
A
B
Catalog #  
FS538  
in.  
17  
17  
mm  
432  
432  
in.  
17  
26  
mm  
432  
660  
WARNING  
Fire Risk  
FS540  
Do NOT install substitute or damaged  
chimney components.  
MUST use chimney system described in  
this manual.  
NO OTHER chimney components may  
be used.  
Figure 5.5 Installing the Firestop Spacer  
Substitute or damaged chimney components  
may impair safe operation.  
Note: You must provide support for the pipe during con-  
struction and check to be sure inadvertent loading has not  
dislodged the chimney section from the fireplace or at any  
chimney joint.  
D. Install the Firestop Spacers  
Mark and cut an opening in the ceiling for the spacer being  
used. See Figure 5.5.  
Frame the opening with the same size lumber used in the  
ceiling joists.  
CAUTION  
Firestop spacers must be used at ceiling/floor.  
Chase construction requires firestops at each floor or  
every 10 ft (3.05 m) of clear space.  
Install the firestop spacer.  
Use same dimensional lumber as joists.  
Firestop slows spread of fire and reduces cold air  
infiltration.  
18  
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E. Install the Attic Insulation Shield  
An insulation shield must be installed when there is a pos-  
sibility of insulation coming into contact with the factory built  
chimney system.  
Tabs  
17 in.  
(423 mm)  
24 in.  
Attic  
Bend the tabs at the top of the attic insulation shield inward.  
This will help keep the chimney section centered in the  
shield.  
(610 mm)  
Insulation  
Shield  
Insulation  
Firestop Spacer  
Position the shield over the vertical chimney section where  
it penetrates a firestop spacer.  
Slide the shield down until it rests on the firestop spacer.  
The firestop spacer will support the insulation shield. See  
Figures 5.6 and 5.7.  
13 in.  
(330 mm)  
Chimney  
Figure 5.6 Install Attic Insulation Shield Above the Ceiling  
WARNING  
Fire Risk  
DO NOT pack insulation or other  
combustibles: betweenrestops;between  
chimney and attic insulation shield.  
ALWAYS maintain specified clearances  
around chimney and firestop systems.  
Install firestops as specified.  
Tabs  
17 in.  
Attic  
(423 mm)  
Insulation  
Shield  
Insulation  
24 in.  
(610 mm)  
Failure to keep insulation or other material  
away from chimney pipe may cause fire.  
F. Double-check the Chimney Assembly  
13 in.  
(330 mm)  
Continue assembling the chimney sections up through the  
firestop spacers as needed. While doing so, be aware of  
the height and unsupported chimney length limitations given  
under Section 5.A. Chimney Requirements.  
Firestop Spacer  
Chimney  
Figure 5.7 Install Attic Insulation Shield Below the Ceiling  
Check each section by pulling up slightly from the top to en-  
sure proper engagement before installing the succeeding  
sections. If they have been connected correctly, they will not  
disengage when tested.  
G. Secure the Chimney  
When offsets and returns are joined to straight pipe sections,  
they must be locked into position with the screws provided*  
(outer only), using the predrilled holes. To prevent gravity  
from pulling the chimney sections apart, the returns and the  
chimney stabilizers have hanger straps for securing these  
parts to joists or rafters. See Figure 5.8.  
FIRESTOP  
STRAPS  
JOINT  
BAND  
*
or equivalent #6 or #8 sheet metal screw no longer than  
3/4 in. (19 mm).  
(OPTIONAL)  
OPTIONAL  
ADDITIONAL  
SUPPORT  
WARNING  
Fire Risk  
Secure offsets with screws.  
Secure returns with strapping.  
Figure 5.8 Secure the Chimney  
Keep chimney sections from separating or  
twisting.  
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19  
Complete the Enclosure  
6
A. Chimney Termination  
Chimney Termination Requirements (See Figures 6.1 and 6.2)  
Must have a cap approved and listed for this fireplace system  
Must not be located where it will become plugged by snow or other material  
Must terminate at least 3 ft (914 mm) above the roof and at least 2 ft (610 mm) above any portion of the roof within 10 ft  
(3.05 m).  
Must be located away from trees or other structures  
Slanted Roofs  
Gas, Wood or Fuel  
Oil Termination  
20 in.  
(508 mm)  
Chimney must extend 2 ft (.6 m)  
Chimney must  
extend 3 ft (.9 m)  
above the roof  
(minimum) to  
Perpendicular  
Wall  
above any portion of the roof  
18 in.  
within 10 ft (3 m) of the chimney  
(457 mm)  
(gas only)  
A
Gas  
Termination  
Flat Roofs  
Chimney must extend 2 ft (.6 m)  
above any portion of the roof  
within 10 ft (3 m) of the chimney  
Chimney must  
extend 3 ft (.9 m)  
above the roof  
Gas Termination Wood & Fuel Oil Termination  
6 in. (152 mm) 20 in. (508 mm)  
A
Figure 6.1 Termination Requirements  
Figure 6.2 Multiple Chimneys  
Mark the Exit Point of the Roof  
Locate the point where the chimney will exit the roof by plumbing down to the  
center of the chimney. Drive a nail up through the roof to mark the center. See  
Figure 6.3.  
Cut Out the Hole in the Roof  
Measuretoeithersideofthenailandmarkthe17 in.x17in.(432 mm x 432 mm)  
or 17 in. x 26 in. (432 mm x 660 mm) opening required. This is measured on  
the horizontal; actual length may be larger depending on the pitch of the roof.  
Cut out and frame the opening. See Chapter 25 of the Uniform Building  
Code for roof framing details.  
WARNING  
Fire Risk  
Must maintain 2 in. (51 mm) air clearance  
to insulation and other combustible  
materials.  
Assemble the Chimney Sections Through the Roof  
Continue to add chimney sections through the roof opening, maintaining at  
least a 2 in. (51 mm) air space to combustible materials.  
Install the Roof Flashing  
If a roof flashing is to be used, install the roof flashing appropriate to the  
roof pitch and install a round termination cap and storm collar following the  
instructions shipped with the cap.  
Figure 6.3 Ceiling/Attic Construction  
20  
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Install the Chimney Air Kit (required in Canada):  
When installing the chimney air kit, follow the instructions  
provided with this accessory.  
B. Chase Top  
A metal chase top is required to seal the top of the chase  
around the chimney pipe. The top should include a turn-  
down and drip edge to prevent water from seeping into the  
chase. Provide a 1/8 in. (3 mm) gap around the flue pipe  
and slope the top downward away from the penetration. See  
Figure 6.4.  
All seams must be caulked to prevent leaks.  
A chase installation must use a chase top. Chase tops  
are available from your Heatilator dealer or may be field  
constructed.  
Attach the chase top to the top of the chase.  
Termination Cap  
2 in. (51 mm) Collar  
on Chase Top  
Caulk  
Storm Collar  
Slope Downward  
Turn-down  
Drip Edge  
Chase  
(Chimney)  
.018 (26 ga) min.  
Galvanized  
Chase Top  
Figure 6.4 Chase Top Construction  
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21  
C. Install the Termination Cap  
Note: To protect against the effect of corrosion on those  
parts exposed to the weather, the termination cap can be  
painted with a rust-resistant paint.  
Install the chimney sections up through the chase  
enclosure. When using a TR11 Round Termination Cap,  
the uppermost top section of pipe must extend 6 in.  
(152 mm) above the top of the flashing collar to allow  
installation of the storm collar and termination cap. See  
Figure 6.5.  
WARNING  
Fire Risk  
For installations utilizing a TR11T Round Telescoping  
Termination Cap, the uppermost chimney section must  
be below the top of the chase top, but not more than  
14 -1/2 in. (368 mm) below the top of the chase top.  
Minimum overlap of chimney and termination cap must  
be 1-1/2 in. (38 mm). See Figure 6.6.  
The minimum overlap of cap to pipe  
MUST be met or chimney may separate  
from cap.  
Separation allows sparks, heat and embers  
to escape.  
For installations utilizing an ST1175 Square Termination  
Cap the last chimney section must not be more than  
4-1/2 in. (114 mm) below the chase top. See Figure 6.7.  
For installations utilizing an TCT1175 Terra Cotta Cap the  
last chimney section must be between 7 in. (178 mm) below  
the chase top and 2 in. (51 mm) above. See Figure 6.8.  
For chase installations you can use a TR11 Round  
Termination Cap, a TR11T Round Telescoping Termination  
Cap, an ST1175 or a TCT1175 Terra Cotta Termination  
Cap.  
Install the termination cap following the instructions  
provided with it.  
Flashing Collar  
Cap Standoff  
2 in. (51 mm) min.  
4-1/2 in.  
(114 mm)  
max.  
1-1/2 in.  
(38 mm) min.  
overlap  
Top of Pipe  
Figure 6.7 Installing an ST1175 Square Termination Cap  
The last section of pipe  
must stop between the  
Minimum 1-1/2 in. (38 mm) overlap of cap over pipe  
distances given below.  
1-1/2 in. (38 mm)  
Storm Collar  
2 in. (51 mm) min.  
min. overlap  
2 in. (51 mm) above top  
of the chase.  
{
6 in. (152mm) min.  
7 in. (178 mm) below top  
Flashing Collar  
2 in. (51 mm) min. collar  
of the chase.  
Top of Pipe  
Figure 6.8 Installing a TCT1175 Terra Cotta Cap  
Figure 6.5 Installing a TR11 Round Termination Cap  
Storm Collar  
Flashing Collar  
Top of Pipe  
2 in. (51 mm) min.  
14-1/2 in. (368mm) max.  
1-1/2 in. (38 mm) min.  
overlap  
Figure 6.6 Installing a TR11T Round Telescoping Termination Cap  
22  
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Accessories  
7
A. Gas Log/Lighter Provisions  
A certified gas log lighter or decorative gas log set can be  
installed in this fireplace.  
WARNING  
Asphyxiation Risk  
Maximum input is 100,000 BTU/hr.  
Damper must be locked open when gas logs  
installed.  
Decorative gas appliance must be certified to ANSI Z21.60  
“Standard for Decorative Gas Appliances for Installation  
in Vented Fireplaces”.  
Gas fire generates fumes.  
Must be installed in accordance with the National Fuel  
Gas Code, ANSI Z223.1-1980.  
WARNING  
A log set must incorporate a gas shutoff.  
Log set requires the damper to be locked fully open.  
Fire Risk  
For use with solid wood fuel or decorative  
gas appliance only.  
DO NOT install unvented gas logs.  
Knockouts are provided on both sides of the fireplace and in  
refractories for 1/2 in. (13 mm) iron pipe.  
We recommend you seal refractory around pipe with  
fireplace mortar or cement.  
Repack insulation from the knockout around the pipe.  
Maintain 1-1/2 in. (38 mm) air space around the pipe for  
4 in. (102 mm) beyond the fireplace.  
WARNING  
Fire Risk  
Explosion Risk  
See Figure 7.1.  
Inspect appliance and components for  
damage. Damaged parts may impair safe  
operation.  
Outer Shell  
Do NOT install damaged components.  
Do NOT install incomplete components.  
Do NOT install substitute components  
of Fireplace  
Firebox  
Maintain air clearance  
to combustibles.  
Report damaged parts to dealer.  
Refractory  
Combustible  
Materials  
Seal with  
fireplace mortar  
or cement  
1-1/2 in.  
(38 mm)  
air space  
Gas Line  
Gas Line  
Combustible materials  
may be located at zero  
clearance to gas line  
beyond 4 in. (102 mm)  
from fireplace side.  
Repack  
Insulation  
Knockout  
4 in.  
(102 mm)  
Figure 7.1 Gas Line Installation  
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23  
Finishing  
8
A. Hearth Extension  
A hearth extension must be installed with all fireplaces to  
protect the combustible floor in front of the fireplace from  
both radiant heat and sparks. See Figures 8.1-8.3.  
High temperature  
(300°F min.) continuous,  
non-combustible sealant  
HX3 or HX4  
Hearth Ext  
Tile, stone or other  
or equivilent  
non-combustible material  
Protective  
Metal Hearth  
Strip  
insulation  
(see Table below)  
2 in. (51 mm)  
required  
Floor constructed of wood or  
other combustible material  
1 in. (25 mm) overlap  
Figure 8.1 Hearth Extension Construction  
Metal strips are placed 2 in. (51 mm) under the  
front of the fireplace and must extend beyond the  
front and sides of fireplace by 2 in. (51 mm).  
WARNING  
Figure 8.2 Positioning the Protective Metal Hearth Strips  
Fire Risk  
Metal hearth strips MUST be installed.  
WARNING  
Sparks or embers may ignite flooring.  
Fire Risk  
This fireplace has been tested and approved for use with a  
hearth extension insulated to a minimum R value of 1.16.  
Hearth extensions must be installed  
exactly as specified.  
To substitute materials for the factory-available hearth ex-  
tensions, see Figure 8.3 and calculate insulation alternatives  
as per Table 8.1 and the following formulas:  
High temperatures or hot embers may ignite  
concealed combustibles.  
Thermal conductivity per inch thickness = k  
k = (BTU)(inch) / (foot2)(hour)(°F)  
Required thickness = Rk  
Thermal resistance per inch thickness = r  
r = (foot2)(hour)(°F) / (BTU)(inch)  
Required thickness = R / rB.  
Table 8.1  
B
A
C
Hearth Extension Insulation Alternatives, R Value = 1.16  
Minimum  
thickness  
required  
k per inch  
thick  
r per inch  
thick  
Material  
Model #  
A
66  
B
20  
C
12  
Hearth & Home HX3, HX4  
USG Micore 300™  
USG Durock™ Cement Board  
Cement Mortar  
0.43  
0.46  
1.92  
5.0  
2.33  
2.18  
0.52  
0.20  
0.20  
0.08  
1/2 in.  
1/2 in.  
in.  
HX4  
mm 1676  
508  
305  
2-1/4 in.  
5-7/8 in.  
5-7/8 in.  
14-5/8 in.  
Common Brick  
5.0  
Figure 8.3 Hearth Extension Dimensions  
Ceramic Tile  
12.50  
Armstrong™ Privacy Guard Plus  
Marble  
.046  
2.18  
1/2 in.  
14.3-20.0  
0.07-0.05  
16-5/8 in. - 23-3/8 in.  
24  
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B. Finishing Material  
WARNING  
Combustible Material  
Material which is made of or surfaced with wood,  
compressed paper, plant fibers, plastics, or any material  
capable of igniting and burning, whether flame proofed or  
not, plastered or not plastered.  
Fire Risk  
Do NOT obstruct air inlet or outlet grilles.  
Do NOT modify grilles.  
Modifying or covering grilles could cause  
temperature rise and fire hazard.  
Finishing materials must not interfere with:  
Non-Combustible Material  
Material which will not ignite and burn. Such materials are  
those consisting entirely of steel, iron, brick, tile, concrete,  
slate, glass or plasters, or any combination thereof.  
Non-Combustible Sealant Material  
Air flow through grilles or louvers  
Operation of louvers or doors  
Access for service  
Sealants which will not ignite and burn: Rutland, Inc.  
Fireplace Mortar #63 (or equivalent).  
After completing the framing and applying the facing material  
(drywall) over the framing, a bead of non-combustible seal-  
ant must be used to close off any gaps at the top and sides  
between the fireplace and facing to prevent cold air leaks.  
Large gaps can be bridged with fiberglass rope gasket.  
D. Sidewalls/Surrounds  
Adjacent combustible side walls must be located a minimum  
of 12 in. (305 mm) from the fireplace opening. If you are us-  
ing a decorative surround constructed of combustible ma-  
terial, it must be located within the shaded area defined in  
Figure 8.5. Short stub walls are also acceptable if they are  
contained within the shaded area.  
Only non-combustible materials may be used to cover the  
metal fireplace fronts.  
E. Glass Doors  
This fireplace has been tested and listed for use with doors  
as specified in Section 12.B. Fireplace Components. Please  
refer to the manual packed with each set of doors for instal-  
lation instructions.  
WARNING  
Fire Risk  
Use only non-combustible material below  
standoffs.  
Material such as cement board is  
acceptable.  
WARNING  
Fire Risk  
C. Mantel  
Finish all edges and fronts to clearances and  
specifications.  
A combustible mantel may be positioned no lower than  
12 in. (305 mm) above the top of the fireplace openings. The  
combustible mantel may have a maximum depth of 12 in.  
(305 mm). Combustible trim pieces that project no more than  
1 in. (25 mm) from the faces of the fireplace can be placed  
no closer than 6 in. (152 mm) from the top of the fireplace  
openings. See Figure 8.4. Combustible trim must not cover  
the metal surfaces of the fireplace. This mantel clearance is  
in accordance with Section 7-3.3.3 of ANSI/NFPA211.  
Metal fireplace front may be covered with  
non-combustible material only.  
Do NOT overlap combustible materials onto  
fireplace fronts.  
Install combustible materials up to specified  
clearances on top, front and side edges.  
Seal joints between the finished wall and  
fireplace top and sides using only a 300° F  
minimum sealant.  
12 in.  
(305 mm)  
max.  
4 in.  
(102 mm)  
Flush  
Front  
14-3/8 in.  
(365 mm)  
Brick  
Front  
42 in.  
9-3/4 in.  
(1067 mm)  
(opening)  
(248 mm)  
50 deg.  
12 in.  
(305 mm)  
min.  
37 deg.  
48 in.  
(1219 mm)  
(framing)  
Gas  
Knockout  
12 in.  
(305 mm)  
12 in.  
(305 mm)  
Figure 8.5 Sidewalls/Surrounds  
Figure 8.4 Mantel Specifications  
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25  
Operating Instructions  
9
WARNING  
WARNING  
HOT! DO NOT TOUCH.  
SEVERE BURNS MAY RESULT.  
CLOTHING IGNITION MAY RESULT.  
Fire Risk  
Do not operate fireplace before  
reading and understanding operating  
instructions.  
Glass and other surfaces are hot during  
operation and cool down.  
Failure to operate fireplace properly may  
cause fire.  
Keep children away.  
CAREFULLY SUPERVISE children in same room as  
fireplace.  
Alert children and adults to hazards of high  
temperatures.  
Do NOT operate with protective barriers removed.  
Keep clothing, furniture, draperies and other  
combustibles away.  
A. General Information  
Fireplaces, as well as other woodburning appliances, have  
been used safely for many years. It has been our experience  
that most problems are caused by improper installation and  
operation of the fireplace. Make certain that installation and  
operation of the fireplace system is in accordance with these  
instructions.  
WARNING  
It is extremely important that the fire be supervised when-  
ever the fireplace is in use. It is also recommended that an  
annual inspection be performed on the fireplace system to  
determine if the flue system needs to be cleaned, or as in  
the case of any appliance, if minor repairs are required to  
maintain the system in top operating condition.  
Fire Risk  
For use with solid wood fuel or decorative gas  
appliance only.  
Do not install unvented gas logs.  
Air Kit Handle Location  
(just above stone)  
open  
CLOSE  
Damper  
Handle  
Figure 9.1 General Operating Parts  
26  
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B. Outside Air  
E. Firescreen  
A source of air (oxygen) is required in order for combustion A firescreen is always provided to control sparks. It must  
to take place. Whatever air is consumed by the fire must be be closed whenever the fireplace is in use. Glass doors or  
replaced through cracks around windows, under doors, etc. firescreens must not be used to hold burning material in-  
Most newly constructed houses or existing homes fitted with side the fireplace. Only those glass doors specifically tested  
tightly sealed doors and windows are relatively air tight. In and listed for use with the specific fireplace model should be  
this case, an outside air source must be made available to used. Screens should be closed when the glass doors are  
feed combustion air from outside the home.  
closed.  
An outside air control handle allows you control of the out-  
side air inlet if your fireplace is equipped with this option.  
Use of outside air for combustion is highly recommended to  
conserve heated air within the structure and to provide make  
up air to keep the fireplace venting properly.  
WARNING  
Fire Risk  
Close firescreen when burning fireplace.  
Do not use firescreen or glass doors to  
hold burning material in fireplace.  
This fireplace will operate correctly only if adequate ventila-  
tion is provided to allow proper draft to the fireplace sys-  
tem.  
Firescreen controls sparks.  
Glass may break or burning material may  
roll out.  
See Figure 9.1 for location and operation.  
CAUTION  
F. Glass Doors  
Outside air control handles are HOT. Adjust before lighting  
fire.  
Most efficient fireplace operation using glass doors is with  
the doors open. When the doors are open the screen must  
be closed. Only Hearth & Home Technologies glass doors  
may be used. See Figure 9.2 for proper glass door opera-  
tion.  
C. Clear Space Near the Fireplace  
Combustible materials must not be stored on the hearth ex-  
tension. Room furnishings such as drapes, curtains, chairs  
or other combustibles must be at least 4 ft (1.22 m) from the  
open fronts of the fireplace.  
FULLY OPEN  
CORRECT  
PARTLY OPEN  
INCORRECT  
D. Flue Damper  
The flue damper must be in full open position, and is oper-  
ated by moving the handle up toward the top of the fireplace.  
Before lighting the fire, verify this by looking up from the in-  
side of the fireplace. Always operate this fireplace with the  
damper fully open. Please note: Down drafts, obstructions,  
damaged or poor (wet) fuels can cause smoke spillage.  
FULLY CLOSED  
CORRECT  
PARTLY CLOSED  
INCORRECT  
See Figure 9.1 for location and operation.  
WARNING  
Asphyxiation Risk  
Fire Risk  
Figure 9.2 Proper Operating Positions of Bi-fold Doors  
Open damper to operate fireplace.  
Closed damper will over-fire fireplace and  
prevent venting of combustion gases.  
WARNING  
Fire Risk  
Smoke Risk  
Doors must be fully opened or fully closed  
when operating fireplace.  
Partially opened doors may draw flame, smoke  
or heat from fireplace.  
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27  
Seasoning  
G. Grate  
Seasoned firewood is nothing more than wood that is  
The factory installed integral grate must be used to hold the  
logs from falling out of an open fireplace and to allow air to  
pass between the burning logs. It is important to keep the fire  
off the hearth and to allow the ashes to collect beneath the  
fire, thereby forming a layer of additional heat protection.  
cut to size, split and air dried to a moisture content of  
around 20%. The time it takes to season wood varies  
from around nine months for soft woods to as long as  
eighteen months for hardwoods. The key to seasoning  
wood is to be sure it has been split, exposing the wet  
interior and increasing the surface area of each piece. A  
tree that was cut down a year ago and not split is likely  
to have almost as high a moisture content now as it did  
when it was cut.  
WARNING  
Fire Risk  
Use only factory installed integral grate.  
The following guideline will ensure properly seasoned  
wood:  
May cause overfire.  
Stack the wood to allow air to circulate freely around  
and through the woodpile.  
Elevate the woodpile off the ground to allow air  
circulation underneath.  
The smaller the pieces, the faster the drying process.  
Any piece over 6 in. (152 mm) in diameter should be  
split.  
Cover the top of the woodpile for protection from  
rain and snow. Avoid covering the sides and ends  
completely. Doing so may trap moisture from the  
ground and impede air circulation.  
H. Wood Fuel  
Firewood  
Your fireplace performance depends on the quality of the  
firewood you use. All seasoned wood, regardless of spe-  
cies, contains about 8,000 BTU’s per pound, and hard-  
woods have a greater density than soft woods. A piece  
of hardwood will contain about 60% more BTU’s than  
an equal size piece of soft wood. Firewood is commonly  
sold by the cord (128 cu. ft.). A cord of seasoned oak  
(hardwood) would contain about 60% more potential en-  
ergy than a cord of seasoned pine (soft wood).  
The problems with burning wet, unseasoned wood are  
twofold: First, you will receive less heat output from wet  
wood because it requires energy in the form of heat to  
evaporate the water trapped inside. This is wasted ener-  
gy that should be used for heating your home. Secondly,  
this moisture evaporates in the form of steam which has  
a cooling effect in your fireplace and chimney system.  
When combined with tar and other organic vapors from  
burning wood it will form creosote which condenses in  
the relatively cool fireplace and chimney.  
Examples of soft wood trees are Douglas fir, pine, spruce,  
and cedar, poplar, aspen and alder. Soft woods require  
less time to dry, burn faster and are easier to ignite than  
hardwoods.  
Examples of hardwood trees are oak, maple, apple, and  
birch. Hardwoods require more time to season, burn  
slower and are usually harder to ignite than soft woods.  
The best wood fuel is a combination of soft wood and  
hardwood. Start the fire with soft wood; the fire will give  
off quick heat to bring the fireplace up to operating tem-  
perature, and then the hardwood can be added for slow,  
even heat and longer burn time.  
WARNING  
Fire Risk  
Do NOT burn wet or green wood.  
Store wood in dry location.  
Stack wood so both ends are exposed to  
air.  
Moisture  
Regardless of which species of wood you burn, the single  
most important factor that effects the way your fireplace  
operates is the amount of moisture in the wood. The ma-  
jority of the problems fireplace owners experience are  
caused by trying to burn wet, unseasoned wood.  
Wet, unseasoned wood can cause  
accumulation of creosote.  
Freshly cut wood can be as much water as it is wood,  
having a moisture content of around 50%. Imagine a  
wooden bucket that weighs about eight pounds. Fill it  
with a gallon of water, put it in the fireplace and try to burn  
it. This sounds ridiculous but that is exactly what you are  
doing if you burn unseasoned wood.  
WARNING  
Fire Risk  
Do NOT store wood:  
Closer than required clearances to  
combustibles to fireplace.  
Within space required for loading or ash  
removal.  
28  
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I. Starting a Fire  
CAUTION  
Odors and vapors released during initial  
operation.  
Curing of high temperature paint.  
Open windows for air circulation.  
Odors may be irritating to sensitive individuals.  
Check the flue damper to be certain it is in the full open po-  
sition. Place crumpled or twisted paper under the fireplace  
grate. Loosely arrange kindling or small pieces of wood to  
form a layer above the paper.  
The fires must be built on the fireplace grate, without danger  
of the burning fuel falling out of the fireplace opening.  
Light the paper and add small pieces of wood until a hot bed  
of embers has been established.  
After establishing the fire bed, and the small firewood is burn-  
ing briskly, add a minimum of three average sized pieces of  
split firewood, place the wood in such a manner to allow  
combustion air and flames between them.  
WARNING  
Fire Risk  
Keep combustible materials, gasoline and  
other flammable vapors and liquids clear of  
fireplace.  
Note: When first lighting your fireplace, it may be neces-  
sary to pre-warm the flue to establish a draft. This is done  
by holding a rolled up piece of burning newspaper under  
the flue damper for a few moments. This will help reduce  
smoke spillage during start-up.  
Do NOT store flammable materials close  
to the fireplace.  
Do NOT use gasoline, lantern fuel,  
kerosene, charcoal lighter fluid or similar  
liquids to start or “freshen up” a fire in this  
fireplace.  
Note: The first three or four fires should be of moderate  
size to allow the oils and binders to be burned from the  
fireplace and the refractory and paint to cure. You may  
notice an industrial odor the first few fires. This is consid-  
ered normal.  
Keep all such liquids well away from the  
fireplace while it is in use.  
Combustible materials may ignite.  
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29  
Troubleshooting  
10  
This fireplace will operate correctly only if adequate ventila- flue, or some condition is in effect to draw smoke from the  
tion is provided to allow proper draft to the fireplace system. fireplace into the house. Understanding and differentiating  
Hearth & Home Technologies assumes no responsibility for the conditions which can cause each of these kinds of spill-  
the improper performance of the fireplace system caused age problems is essential to their solution.  
by inadequate draft due to environmental conditions, down  
drafts, tight sealing construction of the structure, or mechan-  
ical exhausting devices which will create a negative air pres-  
sure within the structure where the fireplace is located.  
Flue Leakage  
Check for improperly connected flue joints or a damaged  
flue joint in the chimney system. Such leakage would  
reduce draft (air would be drawn in through the leaks rather  
than through the fireplace). The result might be difficult  
start-up and smoky fires that might spill if other adverse  
draft conditions accompany this problem.  
Flue Blockage  
A. Understanding Vent Problems  
If smoke spillage occurs from a fireplace opening when the  
door is open and the proper chimney height, flue size, and  
configuration requirements for the installation have been  
met, there is either a leakage in the flue, a blockage in the  
The damper should be open.  
Overhanging  
tree?  
Bird's nest  
or leaves in  
termination  
cap?  
Structural  
changes in  
chimney area?  
Another appliance in  
home also exhausting  
air (furnace, fan,  
dryer, etc.)?  
can lights?  
Unsealed  
Overhead fan  
operating?  
Creosote buildup  
in flue?  
Air register from  
furnace near  
fireplace?  
Damper closed?  
Doors opening  
and closing?  
Window closed  
for start-up?  
Outside air  
closed?  
Figure 10.1 Factory-built Fireplaces: Troubleshooting  
30  
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B. Diagnostics and Problem Solving  
I can’t get a good fire going. What am I doing wrong?  
Diagnostic Questions  
Is the damper open?  
Possible Causes of Condition  
• No draft  
Solutions  
Open damper.  
Is there enough paper/starter? • Insufficient heat to ignite kindling  
Use more paper/starter.  
Use more dry kindling.  
Is there enough kindling?  
Is the kindling dry?  
• Insufficient heat to ignite fuel  
Is there enough or too much  
wood? Is it too large? Is it dry  
enough?  
• Insufficient heat to establish draft  
• Insufficient air passage  
Use small split wood that is well seasoned (split, covered on top at  
least 6 months, preferably a year).  
• Insufficient surface area  
• Ignition temperature high due to moisture  
Are there adequate air spaces • Insufficient combustion air and exposed  
Arrange kindling and wood for air movement.  
between fuel pieces?  
surface area  
Is the chimney pre-warmed?  
• Exposed, cold chimney down drafting  
Use lighted rolled newspaper at throat or flue opening to start  
upward movement.  
Is there smoke in the house?  
• Damper closed  
Check damper; have chimney checked if it worked previously;  
pre-warm chimney, shut off exhaust devices, open window slightly.  
• Obstruction in chimney  
• Downdraft from chimney temperature or  
from negative house pressure  
Does the kindling, wood not  
ignite?  
• Condition, amount, arrangement of kindling Use more, drier, well-spaced kindling and fuel.  
and fuel  
Does the kindling ignite, but the • Amount of kindling  
Use more kindling; use smaller, dry wood.  
fuel doesn’t?  
• Condition of fuel  
Does the fuel ignite, but not  
burn well?  
• Condition of fuel  
• Draft problem  
Use well-seasoned wood and sufficient amount; turn exhaust fans  
off; open window slightly. Perform Simplified House Pressure Test.  
I don’t get enough/any heat from the fireplace. What can I do about it?  
Diagnostic Questions  
How much wood is used for  
fire?  
Possible Causes of Condition  
• Insufficient fuel  
Solutions  
Make larger fires.  
How well seasoned is the  
wood?  
• Condition of fuel  
Burn seasoned wood: covered on top, split and stacked for 9  
months to 2 years.  
Do you have a blower (where  
possible)?  
• Yes: Turning blower on too early or setting  
too high, cooling firebox  
No: Need for all heat boosts possible  
Yes: Wait until fire established and leave on lower speed.  
No: Add blower if available.  
How much heat output do you • Unrealistic expectations  
expect?  
Explanation of decorative nature of fireplace; suggestion of  
approved fireplace insert.  
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31  
The fireplace burns the wood too fast. What can I do?  
Diagnostic Questions  
Do you have glass doors?  
Possible Causes of Condition  
• Need to slow air intake  
Solutions  
Add glass doors.  
What is the condition of the  
wood?  
• Extremely dry wood  
Mix in less seasoned wood after fire established.  
I smell smoke in the house during operation. What’s causing that?  
Diagnostic Questions  
Does the fire start and burn  
well?  
Possible Causes of Condition  
Solutions  
No:  
• Damper not fully open  
• Chimney obstruction  
Open damper; check and clean chimney if needed; use adequate  
kindling and fuel; open glass doors or open window, check for  
need for balanced air make-up.  
• Not enough kindling and/or fuel to establish  
draft  
• Inadequate combustion air  
Yes:  
• Fire too close to front  
• Competition with exhaust devices  
Build fire farther back. Do not use exhaust fans during startup  
and/or check for need for balanced air make-up system.  
I smell smoke in the house after we’ve had a fire in the fireplace. What is the cause/what can we do?  
Diagnostic Questions  
Is the damper closed?  
Possible Causes of Condition  
• No: Downdraft or negative pressure  
Solutions  
Close the damper at end of burn.  
Yes: Negative pressure from exhaust fans  
and/or house stack effect.  
Check for need for glass doors. Check for need for balanced air  
make-up system or raising chimney.  
Is the chimney clean?  
• No: Creosote odor  
Have chimney cleaned.  
Yes: Damper closed too early  
Wait until fire completely out before closing damper.  
32  
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Maintenance and Servicing the Fireplace  
11  
A. Disposal of Ashes  
B. Chimney Inspection/Cleaning  
Ashes should be placed in a metal container with a tight-fit- Inspect the chimney internally for obstructions and construc-  
ting lid. The closed container of ashes should be placed on tion damage. Flue pipe joints and seams must be continu-  
a noncombustible floor or on the ground, well away from all ous and mechanically tight.  
combustible materials, pending final disposal. If the ashes  
The chimney should be inspected once every two months  
are disposed of by burial in soil or otherwise locally dis-  
during the heating season.  
persed, they should be retained in the closed container until  
all embers have thoroughly cooled.  
If creosote has accumulated, it should be removed to reduce  
the risk of a chimney fire.  
Refer to Figure 11.1 to remove/reinstall termination caps.  
WARNING  
Fire Risk  
C. Firebox Refractory  
Check firebox refractory for excessive cracks or gaps. If  
cracks exceed 1/4 in. (6 mm) in width the refractory should  
be replaced. See Section 12 for replacement information.  
Disposal of ashes  
Ashes should be placed in metal container with tight  
fitting lid.  
Do not place metal container on combustible  
surface.  
WARNING  
Fire Risk  
Ashes should be retained in closed container until all  
embers have thoroughly cooled.  
Inspect fireplace refractory annually.  
Crumbling, deteriorated refractory can allow  
overheating of surrounding materials.  
WARNING  
Fire Risk  
Prevent creosote buildup  
Note: As you use the fireplace, expansion and contraction  
will cause minor cracking of the refractory. This is normal,  
unavoidable, and will not affect the performance of the  
fireplace. If the cracks become large enough that the metal  
behind the refractory is exposed or large pieces fall out, the  
panels should be replaced.  
Inspect chimney once every two months during heating  
season.  
Remove creosote to reduce risk of chimney fire.  
Ignited creosote is extremely HOT.  
Remove 2 screws from  
Remove 4 screws  
and lift top pan off.  
the front and back and  
lift the top off.  
Remove screws,  
lift top cover.  
Top Cover  
Cap  
Cap  
Chimney  
Slip  
Section  
TR11/TR11T  
Round Termination Cap  
TCT1175  
Terra Cotta  
ST1175  
Square Termination Cap  
Termination Cap  
Figure 11.1 Chimney & Termination Cap Cleaning  
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33  
CAUTION  
WARNING  
Handle glass assembly with care.  
Asphyxiation Risk  
When cleaning glass door:  
Fire Risk  
Avoid striking, scratching or slamming  
glass.  
Annual inspection by qualified technician  
recommended.  
Check:  
Do NOT use abrasive cleaners.  
Use a hard water deposit glass cleaner on  
white film.  
Condition of doors, surrounds and fronts  
Condition of glass and glass assembly  
Obstructions of combustion and ventilation  
air  
Do NOT clean glass when it is hot.  
Gas connections and fittings (if present)  
Obstructions of termination cap  
Refractory panels  
WARNING  
Fire Risk  
Do not use chimney cleaners or flame  
colorants in your fireplace.  
Will corrode chimney.  
Clean:  
Glass  
Air passageways, grilles  
D. Maintenance Task List  
Inspect  
Maintenance Tasks  
Screens  
1. Assess condition of screen and replace as necessary. Screens are required.  
2. Verify maintenance of proper clearance to combustible household objects.  
1. Inspect glass panels for cracks. Replace if this condition is present.  
2. Confirm there is no damage to glass or glass frame. Replace as necessary.  
3. Clean glass using a non-abrasive cleaner such as Brasso©.  
Glass Doors  
Circulation Compartment 1. Remove any foreign objects.  
2. Verify unobstructed air circulation.  
Firebox  
1. Inspect condition of refractory. Replace if crumbly, deteriorated, or if cracks exceed 1/4 in. (6 mm).  
Chimney  
1. Inspect for blockage or obstruction such as bird nests, leaves, etc.  
2. Confirm that termination cap remains clear and unobstructed by plants, etc.  
3. Verify that termination cap clearance to subsequent construction (building additions) has been maintained.  
4. Inspect for corrosion or separation.  
5. Verify weather stripping, sealing and flashing remain intact.  
6. Inspect for creosote and remove as needed. (See Sections 10 and 11)  
Grate  
1. If grate burns out, it should be replaced only with the grate specified on the rating plate and in the  
replacement parts list for this fireplace.  
E. Chimney Fire  
In the event of a chimney fire:  
Replace components of the chimney and fireplace as  
specified by the professionals.  
Ensure all joints are properly engaged and the chimney  
is properly secured.  
Have the chimney and adjacent structure inspected by  
qualified professionals. Hearth & Home Technologies  
recommends that NFI or CSIA certified professionals, or  
technicians under the direction of certified professionals,  
conduct a minimum of an NFPA 211 Level 2 inspection of  
the chimney.  
A chimney fire can permanently damage your chimney sys-  
tem. Failure to replace damaged components and make  
proper repairs creates risk of fire.  
34  
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Reference Materials  
12  
A. Fireplace Dimensions  
47 in.  
(1194 mm)  
14 in.  
(356 mm)  
28 in.  
(711 mm)  
23-1/2 in.  
(597 mm)  
13 in.  
[330 mm]  
dia.  
58-7/8 in.  
(1496 mm)  
(effective height)  
39-1/8 in.  
(994 mm)  
38-3/8 in.  
(975 mm)  
39-1/8 in.  
Outside  
Air  
39-1/8 in.  
(994 mm)  
(995 mm)  
Gas  
23 in.  
Gas  
Knockout  
Knockout  
(585 mm)  
8-3/8 in.  
(213 mm)  
8-3/8 in.  
(213 mm)  
42 in.  
(1067 mm)  
14 in.  
(356 mm)  
7-1/2 in.  
(192 mm)  
14 in.  
(356 mm)  
11-3/4 in.  
(298 mm)  
8-5/8 in.  
(219 mm)  
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35  
B. Fireplace Components  
Model #  
ST42A  
Description  
Fireplace with integral grate, outside air kit and hearth protection strips  
Glass Doors - Bi-fold, clear-view - Black  
Glass Doors - Bi-fold, clear-view - Polished Brass  
Glass Doors - Bi-fold, clear-view - Stainless Steel  
Glass Doors - Tinted - Black  
DM1242  
DM1242B  
DM1242S  
DP1242  
DP1242B  
DP1242S  
AK17  
Glass Doors - Tinted - Polished Brass  
Glass Doors - Tinted - Stainless Steel  
Outside Air Kit (included with fireplace)  
Hearth Extension  
HX4  
GR11  
Integral Grate (included with fireplace)  
GR11  
Integral Grate  
Bi-fold Glass Doors  
Perception Glass Doors  
66 in.  
(1676 mm)  
(SIDE OF FIREPLACE)  
20 in.  
(508 mm)  
1/2 in.  
(13 mm)  
HX4 - Hearth Extension  
AK17 - Outside Air Kit  
36  
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C. Chimney Components  
The following pictures show only those chimney components which may be safely used with this fireplace.  
ID4 - Insulated Duct  
Catalog # Description  
CAK5A  
Chimney Air Kit  
4 in. (102 mm)  
ID4  
Insulated Duct/Outside Air  
42 in.  
UD4  
Uninsulated Duct/Outside Air  
Chimney Section - 6 in. (152 mm) long  
Chimney Section - 12 in. (305 mm) long  
Chimney Section - 18 in. (457 mm) long  
Chimney Section - 36 in. (914 mm) long  
Chimney Section - 48 in. (1219 mm) long  
Chimney Stabilizer  
(1067 mm)  
SL1106  
SL1112  
SL1118  
SL1136  
SL1148  
SL11  
UD4 - Uninsulated Duct  
4 in. (102 mm)  
42 in.  
(1067 mm)  
SL1130  
FS538  
FS540  
AS10  
Chimney Offset/Return - 30 deg  
Firestop - Straight  
Firestop - 30 deg  
SL1100 Straight Attic Insulation Shield, 24 in. (610 mm)  
Chimney Joint Band  
A
JB577  
CB576  
RF570  
RF571  
TR11  
Chimney Bracket  
13 in.  
11 in.  
(279 mm)  
(330 mm)  
Roof Flashing - Flat to 6/12 Pitch  
Roof Flashing - 6/12 to 12/12 Pitch  
Round Termination Cap  
B
TR11T  
TCT1175  
ST1175  
CT56  
Round Telescoping Termination Cap  
Terra Cotta Termination Cap  
Square Termination Cap  
Chimney Sections  
A
B
Chase Top  
Catalog #  
in  
6
mm  
152  
305  
457  
914  
in  
mm  
121  
LDS33  
LDS46  
Decorative Shroud - 3 ft x 3 ft (.91 m x .91 m)  
Decorative Shroud - 4 ft x 6 ft (1.22 m x 1.83 m)  
SL1106  
SL1112  
SL1118  
SL1136  
SL1148  
4-3/4  
12  
18  
36  
48  
10-3/4  
16-3/4  
34-3/4  
46-3/4  
273  
425  
Field Constructed Shrouds (See “Woodburning  
Termination Cap”)  
883  
1187  
1219  
A = Actual Length  
B = Effective Length (length of  
chimney part after it has  
been snapped to another)  
14 in.  
(356 mm)  
14 in.  
(356 mm)  
20-3/4 in.  
Inside  
Diameter  
11 in.  
5-1/4 in.  
(133 mm)  
4 in. (102 mm)  
13 in.  
(330 mm)  
Outside  
Diameter  
13 in.  
CAK5A - Chimney Air Kit  
SL11 - Chimney Stabilizer  
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37  
A
Inside  
Diameter  
11 in.  
(279 mm)  
B
17 in. (432 mm)  
21 in.  
(533 mm)  
Outside  
Diameter  
13 in.  
(330 mm)  
Firestop Spacer  
Catalog #  
FS538  
A
0-deg.  
B
SL1130 - Offset/Return  
17 in.  
26 in.  
432 mm  
660 mm  
FS540  
30-deg.  
14-1/2 in.  
(368 mm)  
24 in.  
(610 mm)  
15-1/4 in.  
(387 mm)  
25-1/4 in.  
(641 mm)  
29 in.  
(737 mm)  
AS10 - Straight Attic Insulation Shield  
RF570 - Roof Flashing  
13 in.  
(330 mm)  
15-1/4 in.  
(387 mm)  
2 in.  
(51 mm)  
28 in.  
(711 mm)  
39-7/8 in.  
(1013 mm)  
JB577 - Chimney Joint Band  
RF571 - Roof Flashing  
13 in.  
(330 mm)  
CB576 - Chimney Joint Band  
38  
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72 in.  
(1829 mm)  
36 in.  
(914 mm)  
15-3/4 in.  
(400 mm)  
13-3/8 in.  
(340 mm)  
TR11 - Round Termination Cap  
2 in.  
(51 mm)  
CT56 - Chase Top  
32-3/8 in.  
(822 mm)  
C
D
34-3/8 in.  
(873 mm)  
B
A
A
B
C
D
Catalog # in.  
mm  
914  
in.  
36  
72  
mm  
in.  
mm  
in.  
11  
11  
mm  
279  
279  
TR11T - Round Telescoping Termination Cap  
LDS33  
36  
914 8-1/2 216  
1829 8-1/2 216  
LDS46  
48  
1219  
14-3/4 in.  
(375 mm)  
Decorative Shroud  
LDS33/LDS46  
23 in.  
23 in.  
(584 mm)  
(584 mm)  
ST1175 - Square Termination Cap  
20 in.  
(508 mm)  
17 in.  
(432 mm)  
9-3/8 in.  
(238 mm)  
9-1/4 in.  
(235 mm)  
TCT1175 - Terra Cotta Cap  
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39  
Woodburning Termination Cap  
TR342 / 344 TV  
T R 3 4 2 / 3 4 4  
TR442 / 444  
TS345 / 445  
TR11 / 11T TV  
Shroud  
TR11 / 11T  
TR442 / 444 TV  
(with TR-TVK installed)  
(Top Vent)  
(with TR-TVK installed)  
OPEN TOP with solid sides and 3 in. opening at the bottom.  
32 X 32 with  
Radiation  
Shield  
Minimum Base Dimensions  
(Inches)  
28 X 28 with  
23 X 23  
20 x 20  
26 X 26  
23 X 23  
26 x 26  
23 x 23  
Radiation Shield  
Minimum Top Dimensions  
(Inches)  
25 X 25  
29 X 29  
MAILBOX STYLE with open ends and 3 inch opening at the bottom of the sides.  
34 X 34 with  
28 X 30 with  
Minimum Base Dimensions  
(Inches)  
26.5 X 28 with  
N/A  
N/A  
28 X 30  
27 1/2  
Radiation  
Shield  
Radiation Shield or  
34 X 34  
Radiation Shield  
Minimum Height (Inches)  
28 1/4  
28 1/4  
27 1/2  
ROOFED STYLE with 12 X 22 (264 sq. in.) opening on each side and 3 in. space between the  
radiation shield and chase top.  
34 X 34 with  
Minimum Base Dimensions  
(Inches)  
27 X 27 with  
27 X 27 with  
34 X 34 with  
N/A  
N/A  
Radiation  
Shield  
Radiation Shield Radiation Shield  
Radiation Shield  
Minimum Height (Inches)  
23  
23  
23  
23  
Minimum Height is measured from the bottom of the termination cap:  
Minimum height is established with the bottom of the termination cap 7 in. above the chase top. Minimum height must increase  
accordingly for any height above 7 in.  
40  
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D. Service Parts  
Service Parts  
Exploded Parts Diagram  
ST42A  
ST42  
Beginning Manufacturing Date: N/A  
Ending Manufacturing Date: Active  
2
9
6
1
3
10  
8
7
11  
4
5
(SIDE OF FIREPLACE)  
12  
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41  
Service Parts  
Service Parts List  
ST42A  
ST42  
Beginning Manufacturing Date: N/A  
Ending Manufacturing Date: Active  
#
Description of Part  
Ashlip  
Damper Blade  
Damper Control  
Damper Rod  
Door Support  
Face, Lower Front  
Face, Upper Front  
Firescreen Assembly  
HTL Logo Screen Handle  
Firescreen Ring  
Firescreen Rod  
Grate Assembly  
Hairpin Clip  
ST42A  
16674B  
22891A  
16663A  
13230A  
16697D  
12848D  
16687E  
12413  
4021-150  
11857B  
11755A  
GR11  
Qty.  
2
1
1
1
2
2
2
4
4
28  
4
1
4
1
1
2
11  
5
4
3
6
7
8
101025  
16673A  
16696C  
31190  
Hearth Refractory  
Installation Manual  
Nailing Flange  
12  
Outside Air Kit  
AK17  
1
Paint, Exterior Touch-up  
Refractory Bracket  
Refractory, Corner  
Refractory, Side  
Smokeshelf  
Smokeshield  
Standoff, Top  
Starter Section  
Strip Protector  
71479  
1
4
4
2
1
2
4
1
23959A  
16948A  
16672  
16676B  
16829F  
13433  
10  
9
1
2
22072B  
19972B  
4
42  
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E. Limited Warranty  
HEATILATOR WOODBURNING FIREPLACE  
Limited Warranty  
As part of its  
20-YEAR BUYER PROTECTION PROGRAM  
AS PART OF ITS 20YEAR BUYER PROTECTION PROGRAM (“PROGRAM”), HEARTH & HOME TECHNOLOGIES  
INC. (“HHT”) is pleased to offer a Limited Warranty and a Replacement Parts Advantage covering specific components of your Heatilator®  
woodburning fireplace system ( the “Fireplace”), installed in the United States of America or Canada. Dealers and employees of HHT have no  
authority to make any warranty or authorize any remedies in addition to or inconsistent with the terms of this Program.  
Limited Warranty  
HHT warrants the following components of your Heatilator woodburning fireplace to be free from original defects in material and workmanship  
during the applicable periods described: five years for the firebox assembly, chimney system and roof termination; two years for refractory firebox  
liners; and one year for the grate, wire mesh screens, fan system, outside air system, and glass doors. All limited warranty periods run from the  
date of initial installation of your Fireplace (the “Installation Date”). The Limited Warranty is subject to the conditions, exclusions and limitations of  
liability listed below.  
Replacement Parts Advantage  
Under HHT’s Replacement Parts Advantage, for a period of twenty years from your Installation Date of your Fireplace, if available, HHT will provide  
you with repair or replacement parts for defective components which are no longer under their applicable Limited Warranty, at 50% of the then  
current retail list price for such components. HHT shall have no responsibility for freight and labor charges related to such parts.  
Conditions, Exclusions, & Limitations of Liability  
A. Both the Limited Warranty and Replacement Parts Advantage supplied by HHT apply only while the Fireplace is in its location of original  
installation. HHT’s obligation under this warranty does not extend to damages resulting from (1) installation, operation or maintenance of  
the Fireplace not in accordance with the Installation Instructions, Operating Instructions, and the Listing Agent Identification Label furnished  
with the Appliance; (2) installation which does not comply with local building codes; (3) shipping, improper handling, improper operation,  
abuse, misuse, accident or unworkmanlike repairs; (4) environmental conditions, inadequate ventilation or drafting caused by tight sealing  
construction of the structure, air handling devices such as exhaust fans or forced air furnaces, or other causes; (5) use of fuels other than  
those specified in the Operating Instructions; (6) installation or use of components not supplied with the Fireplace or any other components  
not expressly authorized and approved by HHT; and/or (7) modification of the Fireplace not expressly authorized and approved by HHT in  
writing. This warranty is limited to only the component parts manufactured or supplied by HHT.  
B. During the first year of the Limited Warranty, HHT will, at its sole option, repair or replace any covered defective component and will provide  
replacement parts at no charge. And will pay reasonable labor and freight costs. During the second through the fifth years of the Limited  
Warranty (if applicable), HHT will provide replacement parts free of charge for any covered defective component, but will not pay for freight  
or labor costs related to the shipment of the parts or the actual repair or replacement. After the fifth anniversary of the Installation date,  
HHT’s sole obligation and your exclusive remedy is set forth in HHT’s Replacement Parts Advantage described above. In no event shall  
HHT be liable for any incidental or consequential damages caused by defects in your Fireplace.  
C. EXCEPT TO THE EXTENT PROVIDED BY LAW, HHT MAKES NO EXPRESS WARRANTIES OTHER THAN THE WARRANTY  
SPECIFIED HEREIN. THE DURATION OF ANY IMPLIED WARRANTY IS LIMITED TO DURATION OF THE WARRANTY SPECIFIED  
ABOVE.  
D. Some states do not allow exclusions or limitations of incidental or consequential damages, so those limitations may not apply to you. This  
warranty gives you specific rights; you may also have other rights which vary from state to state.  
How to Obtain Service  
1. To obtain service under this warranty you must:  
2. Send written notice of the claimed condition to Heatilator Technical Service Department, Hearth & Home Technologies, 1915 W. Saunders  
Street, Mt.. Pleasant, Iowa 52641-1563. You may also register your claim online at www.heatilator.com.  
3. Provide proof of purchase, model number, serial number, and manufacturing date code to HHT.  
4. Provide HHT reasonable opportunity to investigate the claim, including reasonable opportunity to inspect the Appliance prior to any repair or  
replacement work and before the Appliance or any component of the Appliance has been removed from the place of original installation.  
5. Obtain HHT’s consent to any warranty work before the work is done.  
ADDITIONAL INFORMATION: If you would like information on current HEATILATOR products or want to locate a dealer in your area, call  
1-800-927-6841.  
©2003 Heatilator is a Registered Trademark of Hearth & Home Technologies Inc.  
Heatilator • ST42A • 35038 Rev G • 02/05  
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43  
F. Contact Information  
Hearth & Home Technologies Inc.  
1915 W. Saunders Street  
Mt. Pleasant, Iowa 52641  
Please contact your Heatilator dealer with any questions or concerns. For  
the number of your nearest Heatilator dealer, please call 1-800-927-6841.  
– NOTES –  
CAUTION  
DO NOT DISCARD THIS MANUAL  
Read, understand  
and follow these  
instructions for safe  
installation and  
operation.  
Leave this manual with  
party responsible for  
use and operation.  
Important operating  
and maintenance  
instructions included.  
This product may be covered by one or more of the following patents: (United States) 4593510, 4686807, 4766876,  
4793322, 4811534, 5000162, 5016609, 5076254, 5113843, 5191877, 5218953, 5263471, 5328356, 5341794, 5347983,  
5429495, 5452708, 5542407, 5601073, 5613487, 5647340, 5688568, 5762062, 5775408, 5890485, 5931661, 5941237,  
5947112, 5996575, 6006743, 6019099, 6048195, 6053165, 6145502, 6170481, 6237588, 6296474, 6374822, 6413079,  
6439226, 6484712, 6543698, 6550687, 6601579, 6672860, 6688302B2, 6715724B2, 6729551, 6736133, 6748940,  
6748942, D320652, D445174, D462436; (Canada) 1297749, 2195264, 2225408; or other U.S. and foreign patents  
pending.  
44  
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