Heat & Glo STS-42 Installation and operation manual
INSTALLATION & OPERATING
INSTRUCTIONS
STS-42
OUTDOOR WOODBURNING FIREPLACE
This fireplace must be installed outside. Significant cold air infiltration will result if it is installed inside a structure.
WARNING!
Improper installation, adjustment, alteration, service or maintenance can cause injury or property damage. Refer to this
manual. For assistance or additional information, consult a qualified installer, service agency or the gas supplier.
07/03 35035 Rev D 1
STS-42 INSTALLATION INSTRUCTIONS
TABLE OF CONTENTS
A. Listings and Code Approvals ...................................................................................................................... 3
B. Description of the Fireplace System ............................................................................................................ 3
C. Fireplace System Components ................................................................................................................... 4
D. Pre-Installation Preparation ......................................................................................................................... 8
E. Chimney Requirements ............................................................................................................................. 10
F. Installation of Fireplace ............................................................................................................................. 12
G. Operating Instructions ............................................................................................................................... 21
H. Maintenance Instructions .......................................................................................................................... 25
Index ......................................................................................................................................................... 27
Warranty ................................................................................................................................................... 28
CAUTION:
Do not expose the fireplace to the elements (i.e. rain, etc.) and keep the fireplace dry at all times. Wet insulation will produce an odor when the fireplace is used.
WARNING!
This appliance is tested and listed for use only with the optional accessories listed in these instructions. Use
of optional accessories not specifically tested for this appliance could void the warranty and/or result in a
safety hazard.
Safety Precautions
1. Please read these installation instructions completely before beginning installation procedures. Failure to follow them
could cause a fireplace malfunction resulting in serious injury and/or property damage.
2. Always check your local building codes prior to installation. The installation must comply with all local, regional, state
and national codes and regulations.
3. An adequate supply of replacement combustion air from outside the house must be available to the fire for the
fireplace to operate properly. To achieve this, the use of the optional outside air kit is highly recommended.
In the event the home is unusually tightly sealed, the optional combustion air kit may not provide all the air required to
support combustion. Hearth & Home Technologies is not responsible for any smoking or related problems that may
result from the lack of adequate combustion air. It is the responsibility of the builder/contractor to ensure that adequate
combustion air has been provided for the fireplace.
4. The fireplace must be installed with the Hearth & Home Technologies SL Series Chimney System.
The chimney system must always terminate outside the building. Be sure to follow all chimney specifications given in
these installation instructions.
5. NEVER leave children unattended when there is a fire burning in the fireplace.
6. This fireplace is built for solid fuel only. NEVER use gasoline, gasoline type lantern fuel, kerosene, charcoal light fluid,
or similar liquids in this fireplace. Keep any flammable liquids a safe distance from the fireplace.
7. DO NOT use chimney cleaners or flame colorants in your fireplace.
8. The flue damper must be open at all times when the fireplace is in use.
9. While servicing this fireplace, always shut off any electricity or gas to the fireplace. This will prevent possible electric
shock or burns. Also, make sure the fireplace is completely cooled before servicing.
10. To ensure a safe fireplace system and to prevent the build up of soot and creosote, inspect and clean the fireplace
and chimney prior to use and periodically during the burning season. See Maintenance Instructions in this manual
for cleaning instructions.
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STS-42 INSTALLATION INSTRUCTIONS
A. LISTINGS AND CODE APPROVALS
This fireplace system has been tested and listed in
accordance with UL 127 standards, and has been listed by
Underwriters Laboratories Inc. for installation and operation
in the United States as described in this manual.
This fireplace has been tested and listed for use with the
optional components listed on page 4. These optional
components may be purchased separately and installed at
a later date. However, installation of an outside air kit will
require significant reconstruction, and should be installed
at the time of the initial fireplace installation.
WARNING!
This fireplace and its components are designed to be installed and operated as a system. Any alteration to or
substitution for items in this system, unless allowed by these installation instructions, will void the Underwriters Laboratories listing and may void the product warranty. It may also create a hazardous installation. Read
through these instructions thoroughly before starting your installation and follow them carefully throughout
your project.
Check with your local building code agency prior to installing
this fireplace to ensure compliance with local codes,
including the need for permits and follow-up inspections. If
you need assistance during installation, please contact your
local dealer or the Heat-N-Glo Technical Services
Department, Hearth & Home Technologies Inc., 800 W.
Jefferson, Lake City, MN 55041.
®
Heat-N-Glo
Technologies Inc., a Division of HON Industries.
is a registered trademark of Hearth & Home
B. DESCRIPTION OF THE FIREPLACE SYSTEM
1. The Heat-N-Glo fireplace system consists of the following:
a. Fireplace/Integral Grate/Cooling Air System
b. Refractory
c. Chimney Termination Cap
d. Chimney System
e. Hearth Extension
2. Optional Components Include:
a. Glass Doors
b. Weather Cover
Note: Illustrations used throughout these instructions
reflect typical installations and are for design purposes
only. Actual installation may vary slightly due to individual
design preferences. However, minimum and maximum
clearances must be maintained at all times.
The illustrations and diagrams used throughout these
installations instructions are not drawn to scale.
Figure 1 - Typical Fireplace System
07/03 35035 Rev D 3
C. FIREPLACE SYSTEM COMPONENTS
1. Fireplace Components
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STS-42 INSTALLATION INSTRUCTIONS
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GR21 Integral Grate
Bi-Fold Glass Doors
DM1842
DM1842B
DM1842S
HX4 - Hearth Extension
WC42S - Weather Cover
Fireplace Dimensions
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STS-42 INSTALLATION INSTRUCTIONS
2. Chimney Components
The following pictures show only those chimney components which may be safely used with this fireplace.
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07/03 35035 Rev D 5
Chimney Sections
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6011LS"6"¾4
2111LS"21"¾01
8111LS"81"¾61
6311LS"63"¾43
8411LS"84"¾64
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STS-42 INSTALLATION INSTRUCTIONS
SL11 - Chimney Stabilizer
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SL1130 - Offset/Return
Firestop Spacer
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835SF°0"71
045SF°03"62
CB576
Chimney Bracket
RF570 - Roof Flashing
Flat to 6/12 Pitch
JB577
Joint Band
RF571 - Roof Flashing
6/12 to 12/12 Pitch
AS10
Straight Attic
Insulation Shield
6 35035 Rev D 07/03
STS-42 INSTALLATION INSTRUCTIONS
LDS33 (3 x 3)
LDS46 (4 x 6)
Decorative Shroud
ST1175
Square
Termination Cap
TR11
Round
Termination Cap
CT56
Chase Top
TR11T
Round Telescoping
Termination Cap
CAK5A
Chimney Air Kit
07/03 35035 Rev D 7
STS-42 INSTALLATION INSTRUCTIONS
WARNING!
To prevent contact with sagging or loose insulation, the fireplace must not be installed against vapor barriers
or exposed insulation. Localized overheating could occur and a fire could result.
D. PRE-INSTALLATION PREPARATION
1. Fireplace Locations and Space Requirements
This fireplace is intended for installation on an outdoor patio or in your yard. It must never be installed inside of the
warm air envelope of your structure. Significant cold air infiltration will result if it is installed inside of the structure.
Figure 2 shows two typical installations.
Figures 3 and 4 show two typical installations assuming an outside air kit is being used. Therefore, an allowance must
be made for 90° bends. Less space is required when ducting goes directly outside without forming elbows.
Figure 2 - Fireplace Locations
CLEARANCES!
A minimum 1½ air clearance must be maintained
at the back and sides of the fireplace assembly except at the nailing flange where the clearance is
½.
Chimney sections at any level require a 2 minimum air space clearance between the framing and
chimney section.
These are
rough
framing
dimensions
only.
Note: If the fireplace is a freestanding fireplace, it must
be located a minimum of 10 from a combustible structure.
A minimum height of 6 4 measured from the base of the
fireplace to the bottom of the termination cap is permitted in this installation.
Figure 3 - Installation Along a Wall or an Exterior Chase
Figure 4 - Corner Installation
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STS-42 INSTALLATION INSTRUCTIONS
2. Constructing an Outdoor Enclosure
This fireplace is intended to be installed outside the house. It may be installed against the outside wall of the house
or as a freestanding fireplace on your porch, patio, or in your yard.
When installing the outdoor fireplace against an outside wall, it must be enclosed to prevent impact damage to the
outside of the fireplace. Build the outside enclosure out of standing building materials, being careful to maintain the
minimum air clearances specified in these installation instructions.
When installing this fireplace as a freestanding fireplace on your porch, patio or in your yard, it must be enclosed to
prevent impact damage to the fireplace. However, the enclosure must not be finished on all four sides. The exterior of
the enclosure may be finished in a textured plywood, a wood clapboard siding, brick or a cultured stone. Vinyl siding
is not recommended for use on the front of the fireplace due to the heat the fireplace produces. This can cause the
vinyl siding to deteriorate.
3. Framing the Fireplace
The STS-42 fireplace will fit a framed opening of
49 wide x 423/8 tall. The finished cavity depth must
be no less than 241/8.
Figure 5 shows a typical framing (using 2 x 4
lumber) of the fireplace, assuming combustible
materials are used. All required clearances to
combustibles around the fireplace must be adhered
to. Any framing across the top of the fireplace must
be above the level of the top standoffs.
CLEARANCES!
A minimum 1½ air clearance must be maintained
at the back and sides of
the fireplace assembly
except at the nailing
flange where the clearance is ½.
Chimney sections at any
level require a 2 minimum air space clearance
between the framing and
chimney section.
Do not apply combustible finishing materials over any part of the stainless
face of this fireplace or a structure fire may result. The fireplace front may
only be covered with noncombustible materials such as ceramic tile, brick
or stone. Do not cover or block any cooling air slots. Do not cover any
portion of the opening to the fireplace that would prevent the installation of
an authorized glass door.
Figure 5 - Framing the Fireplace
WARNING!
4. Sidewalls/Surrounds
Adjacent combustible side walls must be located a minimum of 12 from the fireplace opening. See Figure 6. If you
are using a decorative surround constructed of combustible material, it must be located within the shaded area
defined in Figure 6. Short stub walls are also acceptable if they are contained within the shaded area.
Figure 6 - Sidewalls and Surrounds
07/03 35035 Rev D 9
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