Desa S42 Series Quick start guide

For more information, visit www.desatech.com
SAVE THIS BOOK
This book is valuable. In addition to instructing you
on how to install and maintain your appliance, it also
contains information that will enable you to obtain re-
placement parts or accessory items when needed. Keep
it with your other important papers.


ANS Z21.60, Z21.84 or RGA 2-72 standards or for use
with a vent-free gas log heater approved to ANS Z21.11.2
standard. A DESA hood must be installed when using a
vent-free log heater (see Accessories, page 16).
      
     



etc.) should be contacted before installation to deter-
mine the need to obtain a permit.


RESIDENTIAL AND OUTDOOR WOOD BURNING FIREPLACE
OWNER’S OPERATION AND INSTALLATION MANUAL
MODELS (V)S42 SERIES

www.desatech.com 111099-01G2
TABLE OF CONTENTS
Safety Information ............................................... 2
Specications ...................................................... 3
Fireplace Installation............................................ 4
Venting Installation .............................................. 6
Optional Gas Line Installation.............................11
Operation and Maintenance Guidelines ............ 12
Technical Service............................................... 13
Illustrated Parts Breakdown............................... 14
Replacement Parts............................................ 16
Accessories ....................................................... 16
SAFETY INFORMATION


the manufacturer's instructions


use with this insert.

• Do not store or use gasoline

or liquids in the vicinity of this
or any other appliance.
• Due to high temperatures, the
appliance should be located
     
furniture and draperies.
• Do not place clothing or other

the appliance.
• Never leave children unat-


  

only. When processed wood fuel

stir the logs while they are burn-

beenevaluatedfortheapplication
 
warnings and caution markings
on packaging prior to use.

be used as a substitute for a fur-

for supplemental heat only.
-
-
vice or maintenance can cause

of life. Refer to this manual for
assistanceoradditionalinforma-

or local distributor.


Before beginning the installation of the
fireplace, read these instructions through
completely.
• This DESA replace and its components
are safe when installed according to this
installation manual. Unless you use DESA
components, which have been designed
and tested for the replace system, you
may cause a re hazard.
• The DESA warranty will be voided by and
DESA disclaims any responsibility for the
following actions.
a. Modification of the fireplace, com-
ponents, doors, air inlet system and
damper control.
b. Use of any component part not manu-
factured or approved by DESA in
combination with a DESA fireplace
system.
Proper installation is the most important step
in ensuring safe and continuous operation
of the replace. Consult the local building
codes as to the particular requirements
concerned with the installation of all factory
built replaces.

www.desatech.com
111099-01G 3
SPECIFICATIONS
0" TO
BOTTOM
(LEFT SIDE ONLY)
OUTSIDE AIR
TOP SPACERS
BACK AND SIDES
3/4" AIR SPACE
HEARTH EXTENSION
66" X 20"
TO PERPENDICULAR
12"
EACH SIDE
NOT LESS
THAN 12"
1" AIRSPACE
TO COMBUSTIBLE
COMBUSTIBLE
WALL BOARD
0" TO MATERIAL
NO COMBUSTIBLE
MATERIAL ON FACE
SIDEWALL
TERMINATION
SQUARE CHASE-TOP
GAS LINE
KNOCK OUT
AIR KIT
KNOCK OUTS
ROUND TOP TERMINATION
GAS LINE
KNOCK OUTS
ELECTRICAL
OUTLET
LEFT SIDE
RIGHT SIDE
8.125"
12.625"
14.25"
45.25"
41"
48"
42"
24"
8"
39"
16.25"
29.5"
2.5"
10.625"
1"
12"
2.5" 8.125"
6.75"
10.625"
12.25"
48"
0.625"
36"
22.5"

www.desatech.com 111099-01G4
FIREPLACE INSTALLATION

To determine the safest and most efcient
location for the replace, you must take into
consideration the following guidelines:
1. The location must allow for proper clear-
ances (see Figures 1 and 2).
2. Consider a location where the replace
will not be affected by drafts, air condition-
ing ducts, windows or doors.
3. A location that avoids the cutting of
joists or roof rafters will make installation
easier.
4. An outside air kit is available with this
replace (see Optional Outside Air Kit on
page 6).


Back and sides of replace 3/4" minimum*
Floor** 0" minimum
Perpendicular wall to opening 12" minimum
Top spacers 0" minimum
Mantel clearances see Mantels, page 5
Chimney outer pipe surface 1" minimum
* Not required at nailing anges
** See step 2 of Framing
-
quired air spaces with insulation
or other materials.

Residential Installation
The minimum height of the chimney, mea-
sured from the base of the replace to the ue
gas outlet of the termination, is 14.5 feet for
straight ue or a ue with one elbow set. The
maximum distance between elbows is 6 feet.
For systems with two elbow sets, the minimum
height is 22 feet. The maximum height of any
system is 50 feet. This measurement includes
the replace, chimney sections and the height
of the termination assembly at the level of the
ue gas outlet (see Figure 18, page 11).

Outdoor Installation
The minimum height of the chimney, mea-
sured from the base of the replace to the
ue gas outlet of the termination, is 8 feet
(minimum of 4 feet of chimney pipe sections
required for outdoor installation).

1. Frame the opening for the replace using
the dimensions shown in Figures 1 and
2.
2. If the replace is to be installed directly
on carpeting, tile (other than ceramic) or
any combustible material other than wood
ooring, the replace must be installed
upon a metal or wood panel extending
the full width and depth of the replace.
3. Set the replace directly in front of this
opening and slide the unit back until the
nailing anges touch the side framing.
4. Check the level of the replace and shim
with sheet metal if necessary.
5. Before securing replace to prepared fram-
ing, the ember protector (provided) must be
placed between the hearth extension (not
supplied) and under the bottom front edge
of the replace to protect against glowing
embers falling through. If the replace is
to be installed on a raised platform, a Z-
type ember protector (not supplied) must
be fabricated to t your required platform
height. The ember protector should extend
under the replace a minimum of 1 1/2". The
ember protector should be made of galva-
nized sheet metal (28 gauge minimum) to
prevent corrosion.
6. Using screws or nails, secure the replace
to the framing through anges located on
the sides of the replace.
23.50"
43.375"
48.25"
Figure 1 - Framing Dimensions
59.264"
19.466"
27.527"
83.830"
MAINTAIN 3/4"
CLEARANCE AT
SIDES AND BACK
OF FIREPLACE
3/4" CLEARANCE
NOT REQUIRED AT
NAILING FLANGES
Figure 2 - Corner Installation

www.desatech.com
111099-01G 5
DRAIN PAN (DP42)
For outdoor installations, the replace enclo-
sure must allow for adequate drainage and
fresh air ventilation. It is recommended that
a sealed, corrosion resistant catch pan with
provision for drainage be installed under the
replace within the replace enclosure (see
Accessories, page 16).
HEARTH ExTENSION
A hearth extension projecting a minimum of
16" in front of and a minimum of 8" beyond
each side of the replace opening is required
to protect combustible floor construction
in front of the replace. Fabricate a hearth
extension using a material which meets the
following specications: a layer of noncom-
bustible, inorganic material having a thermal
conductivity of K=0.84 BTU IN/FT, HR. F (or
less) at 1" thick. For example, if the material
selected has a K factor of 0.25, such as glass
ber, the following formula would apply:
0.25 x 1.0" = 0.30" thickness required
0.84
Thermal conductivity "K" of materials can be
obtained from the manufacturer or supplier of
the noncombustible material. If the hearth ex-
tension is to be covered, use noncombustible
material such as tile, slate, brick, concrete,
metal, glass, marble, stone, etc. Provide a
means to prevent the hearth extension from
shifting and seal gap between the replace
frame and hearth extension with a noncom-
bustible material (see Figure 3).
FIREPLACE INSTALLATION
Continued
Figure 3 - Hearth Extension
Seal Gap
Fireplace Front
Ember Protector
Fireplace Front
Raised Hearth
Fireplace Front
Elevated
Ember Protector
Ember Protector
Seal Gap
Hearth
Extension

is to be installed only as shown


A mantel may be installed if desired (see
Figure 4). Woodwork such as wood trims,
mantels or any other combustible material
projecting from the front face must not be
placed within 12" of the replace opening.
Combustible materials above 12" and pro-
jecting more than 1 1/2" from the replace
must not be placed less than 15" from the
top opening of the replace (NFPA STD 211,
Sec. 7-3.3.3).
Mantels or any other combustible material
also may come up to the side edge of the
black metal face of the replace just as long
as the projection from the front face fall within
the limit shown in Figure 4.
12 1/4" Ref.
6"
Ref.
15" Min.
12" Min.
11/2" Max.
3" Nom.
33°
Combustible
Material
Safe
Zone for
Projection of
Combustible
Materials
Fireplace Opening
Upper
Section of
Fireplace
Figure 4 - Mantel Clearances to
Combustible Material
FIREBOX
SAFE ZONE
Top View of Fireplace
2" Max.
3.0"
Min. to
Perpendicular
Side Wall
12"
8.0"
33°
Combustible
Material Must
Not Overlap
Front Face

www.desatech.com 111099-01G6
Figure 6 - Lineal Gain

PART NO. DESCRIPTION GAIN
42" Fireplace 44 "
12-8DM
12-8HT Pipe Section 10 5/8
"
18-8DM
18-8HT Pipe Section 16 5/8
"
24-8DM
24-8HT Pipe Section 23 5/8
"
36-8DM
36-8HT Pipe Section 34 5/8
"
48-8DM
48-8HT Pipe Section 46 5/8
"
RT-8DM Round Termination 6 7/8 "
*
RTL-8DM Round Termination 7 3/4 "
*
RTT-8DM Round Termination
with Slip Section
6 7/8 " to
23 1/8"*
RTTL-8DM Round Termination
with Slip Section
8 1/2 " to
21 1/2"*
ET-8DM Square Chase-Top 12 "
*
ETO-8DM Square Chase-Top
with Mesh 12
"
*
ETL-8DM Square Chase-Top
with Slip Section 7" to 15"*
ETLO-8DM
Square Chase-Top
with Mesh & Slip
Section
12 " to
25 1/2" *
* The lineal gain for the terminations is mea-
sured to the ue gas outlet height.
Hemmed
End
8" Stainless
Inner Pipe
12 3/8" Galvanized
Outer Pipe


Each double wall chimney section consists of a
galvanized outer pipe, a stainless steel inner ue
pipe and a wire spacer. The pipe sections must
be assembled independently as the chimney is
installed. When connecting chimney directly to
the replace, the inner ue pipe section must be
installed rst with the lanced side up. The outer
pipe section can then be installed over the ue
pipe section with the hemmed end up. Press
down on each pipe section until the lances se-
curely engage the hem on the replace starter.
The wire will assure the proper spacing between
the inner and outer pipe sections.
VENTING INSTALLATION


The installation of an outside air kit should
be performed during the rough framing of
the replace due to the nature of it's location.
Outside combustion air is accessed through
a vented crawl space (AK4F) or through a
sidewall (AK4).
   
inlet ducts shall not terminate
in attic space.
Figure 5 - Outside Air Kit
Secure to Collars with Metal Tape,
Screws or Straps (Min. of 1/4" x 20"
in size)
Air Inlet
Location
Must Allow
For Bushes
or Snow
Vent Hood
Required for
Wall Installation
Air Inlet
Eyebrow
Vented Crawl Space
(Check Local Codes
Before Installing in a
Vented Crawl Space)

The DESA chimney system consists of 12",
18", 24", 36" and 48" snap-lock, double-wall
pipe segments, planned for maximum adapt-
ability to individual site requirements. Actual
lengths gained after tting overlaps must be
taken into consideration (lineal gain) and are
given in the lineal gain chart (see Figure 6).
Lineal gain is the actual measurable length of a
part after two or more parts are connected. For
Canada, use chimney parts designated "HT".

collar around the chimney at the
      
obstructed.Neveruseblowninsula-


www.desatech.com
111099-01G 7
VENTING INSTALLATION
Continued
Continue to assemble chimney sections as out-
lined, making sure that both the inner and outer
pipe sections are locked together. When install-
ing double wall snap-lock chimney together, it
is important to assure the joint between the
chimney sections is locked. Check by pulling
chimney upward after locking. The chimney
will not come apart if properly locked. It is not
necessary to add screws to keep the chimney
together (exception - see Figure 9, page 8).

1. To achieve desired offset, you may install
combinations of 12", 18", 24", 36" and 48"
length of double wall pipe (see offset chart
and Figure 7).
2. Chimney weight above offset rests on return
elbow. Straps must be securely nailed to
rafters or joists (see Figure 8, details a & b
on page 8).
3. Maximum length of pipe between supports
(return elbow or 12S-8DM) is 6' of angle
run. Maximum of two 6' angle run sections
per chimney system (see Figure 7).
4. All pipe connections between the offset
and return must be secured with two
screws on the outer pipe only (see Figure
9, page 8). Do not penetrate the inner
stainless.
 RISE 
A B 48"  24" 18" 12"
4 3/8"16 3/8" ELBOW SET ONLY
9 3/4"25 1/2" 1
12 3/4"30 3/4" 1
15" 34 3/4" 1
18" 40" 1 1
21 1/4"46 1/4" 1
23 3/4"49 1/4" 1 1
27 3/4"56 3/4" 1
30" 60 3/4" 1 1
33" 66" 1 1
36" 71" 1 1
38 1/4" 75" 2
41 1/4" 80 1/4" 1 1 1
45" 86 3/4" 2
46 3/4" 89 1/2" 1 1 1
51" 97" 1 1
53 1/4" 101" 2 1
56 1/4"106 1/4" 2
59 1/4"111 1/2" 1 1 1
61 3/4"115 1/2" 2 1
64 3/4"120 3/4" 2 1
68 1/4" 127" 1 2
70" 130" 2 1 1
74 1/4"137 1/2" 1 2 1
76 3/4"141 1/2" 1 2 1
79 3/4"146 3/4" 4
OFFSET CHART (22-50 FT. SYSTEM HEIGHT)
Figure 7 - Typical Offset Terminations
Return
Elbow
Offset
Elbow
Return
Elbow
Offset
Elbow
6' Max.
6' Max.
6' Max.
6' Max.
6' Max.
6' Max.
Return
Elbow
Offset
Elbow
Offset
Elbow
Return
Elbow
A B C
Offset
Elbow
Ceiling
Support Pipe
12S-8DM
Return
Elbow

www.desatech.com 111099-01G8
VENTING INSTALLATION
Continued
Figure 9 - Elbow Offset
B
A
Screws

Firestop spacers are required at each point
where the chimney penetrates a oor space.
Their purpose is to establish and maintain
the required clearance between the chimney
and the combustible materials. When the pipe
passes through a framed opening into a living
space above, the restop must be placed onto
the ceiling from below as shown in Figure 10.
They also provide complete separation from
one oor space to another or attic space as
required by most codes. When the double wall
pipe passes through a framed opening into an
attic space, the restop must be placed into an
attic oor as shown in Figure 11.
Figure 10 - Firestop Spacer with Living
Space Above Ceiling
Figure 11 - Firestop Spacer with Attic
Space Above Ceiling
Existing
Ceiling
Frame
Firestop
Spacer
Screws or
Staples
(Min. of 8)
Firestop
Spacer
Screws or Staples
(Min. of 8)

To maintain a 1" clearance to the pipe on a
roof with a pitch, a rectangular opening must
be cut.
1. Determine the center point through which
the pipe will penetrate the roof.
2. Determine the center point of the roof.
Pitch is the distance the roof drops over
a given span, usually 12". A 6/12 pitch
means that the roof drops 6" for each 12"
one measure horizontally down from the
roof rafters.
3. Use the roof opening chart (Figure 12,
page 9) to determine the correct opening
length and ashing required.
4. Remove the shingles around the opening
measured. Cut out this section.
5. Add the next sections of the pipe until the
end penetrates the roof line. Check to see
that the proper clearances are maintained.
Extend chimney by adding sections of
double wall pipe until pipe is minimum of
30" above the highest point of the roof cut-
out. Termination and chimney must extend
a minimum of 36" above the highest point
where it passes through the roof.
Existing
Ceiling
Frame
Figure 8 - Ceiling Support Pipe
12S-8DM
2" Min.
Straps
Straps
Straps
Straps
Detail A
Return Elbow
Detail B
Angle Firestop
See Detail A
See Detail B

www.desatech.com
111099-01G 9
VENTING INSTALLATION
Continued
14 3/8" Min.
(365 mm) 30" Min.
(762 mm)
1" Min.
(25 mm)
1" Min.
(25 mm)
1" Min.
(25 mm)
Opening "A"
Pitch Slope Opening "A"



Flat 0° 15" V6F-8DM
0-6/12 26.6° 16 1/8" V6F-8DM
6/12-
12/12 45.0° 20 3/8" V12F-8DM


Determine the ashing to be used with the roof
opening chart. Slide ashing over pipe until
base is at against roof. Replace as many
shingles as needed to cover exposed area
and ashing base. Secure in position by nail-
ing through shingles (see Figure 13). DO NOT
NAIL THROUGH FLASHING CONE.

When installing the ashing on a metal roof,
it is required that putty tape be used between
the ashing and the roof. The ashing must be
secured to the roof using #8 x 3/4" screws and
then sealed with roof coating to prevent leakage
through the screw holes. A roof coating must
also be applied around the perimeter of the
ashing to provide a proper seal.
Figure 12 - Roof Opening Measurements
Nail Only
Outer
Perimeter
of Flashing
Storm Collar
Flashing
Cone
Underlap Shingles
at Bottom
Overlap
Shingles Top
and Sides Only
Figure 13 - Flashing Installation
Storm Collar Installation (SC1 or SC2)
Place storm collar over pipe and slide down
until it is snug against the open edge of the
ashing (see Figure 14). Use SC1 for all round
terminations and SC2 for all terminations
with slip sections. Apply waterproof caulk
around the perimeter of the collar to provide
a proper seal.
Figure 14 - Storm Collar
Chimney
Pipe
Waterproof
Caulk
Storm
Collar Flashing
Terminations/Spark Arrestor
The replace system must be terminated with
the listed round top or chase terminations. In
any case, refer to the installation instructions
supplied with the termination. The termination
approved for this replace are the RT-8DM and
RTL-8DM that can be used for ashing or chase
and ET-8DM, ETO-8DM, ETL-8DM and ETLO-
8DM for chase style termination only. Figure 15
shows an RTL-8DM round top termination.
-
-
low the installation instructions
provided with the termination
being used.
Attach Bracket
Tabs to
Outer Pipe
(3 Places)
Secure with
Screws
RTL-8D
Level of
Flue Gas
Outlet
Caulk
Collar
Flashing
Underlap
Shingles
Bottom Only
Figure 15 - Termination
Overlap
Shingles Top
and Sides

www.desatech.com 111099-01G10
Terminations with 16" slip pipe sections are
available. The RTT-8DM and RTTL-8DM are
approved for flashing installations. When
needed, these adjustable terminations may be
used in combination with the pipe assembly to
achieve the correct chimney height.
Note: In the rare instance there is a problem
with the side driven rain or wind or the chim-
ney is not drafting properly, an ADS-8DM
(Anti-Draft Shield) can be used with round
terminations.

Instructions for chase installations are
included with the chase style termination
chosen. In a multiple chase installation, be
sure to provide adequate distance between
terminations to prevent smoke spillage from
one termination to another. We suggest that
terminations be separated at least 24", center
to center and stacked at a vertical height dif-
ference of 18" (see Figure 16).
Note: If a decorative shroud is to be installed,
contact the manufacturer for specications.

All ue gas outlet chimney terminations must
extend a minimum of 3 feet in height above the
highest point where it passes through the roof
and must be at least 2 feet above the high-
est point of the roof that is within a horizontal
distance of 10 feet (see Figure 17).
24" Min.
24" Min.
18"
Min.
Typ.
Figure 16 - Multiple Chase Installation
10'
2' Min.
10'
3' Min.
2' Min. 3' Min.
Level of
Flue Gas
Outlet
Figure 17 - 10 Foot Rule

Combustible materials, such as wallboard,
gypsum board, sheet rock, drywall, plywood,
etc. may make direct contact with sides and top
around the replace face. It is important that
combustible materials do not overlap the face
itself. Brick, glass, tile or other noncombustible
materials may overlap the front face provided
they do not obstruct essential openings like
louvered slots or any other opening. When
overlapping with a noncombustible facing
material, use only noncombustible mortar or
adhesive.
VENTING INSTALLATION
Continued

www.desatech.com
111099-01G 11
OPTIONAL GAS LINE
INSTALLATION
Gas line hook up should be done by your
supplier or a qualied service person.
Note: Before you proceed, make sure your
gas supply is turned off.
Use only a 1/2" black iron pipe and appropri-
ate ttings.
1. Remove knockout indentation on refrac-
tory or rebrick wall located above the
refractory hearth floor. The knockout
indentation must be rmly tapped with any
solid object such as a 1/2" dowel until it is
released. Remove fragmented portions of
refractory (see Figure 19).
2. Remove gas line cover plate located on
either side of replace and pull out insu-
lation from gas line conduit sleeve. Save
insulation for reuse. Replace screws.
3. Run a 1/2" black iron gas line into the
fireplace through the rear at gas line
conduit sleeve (if using a raised platform,
add height). Provide sufcient gas line into
replace chamber for tting connection
(see Figure 20, page 12). Note: Secure
incoming gas line to wood framing to
provide rigidity for threaded end.
Figure 19 - Gas Line Knockout
Side
Firebrick
Finished
Side
Refractory
Knockout
Plug
Outside of
Fireplace
Gas Line
Conduit
Insulation
Gas
Conduit
Cover
1/2" Dowel
4. Repack insulation around gas line and into
sleeve opening. Seal any gaps between
gas line and refractory knockout hole with
refractory cement or commercial furnace
cement, Install the gas appliance or cap-off
gas line if desired.
VENTING INSTALLATION
Continued
EFFECTIVE HEIGHT OF
TERMINATION CAP
30E-8DM
EFFECTIVE HEIGHT OF
TERMINATION CAP
EFFECTIVE HEIGHT OF
TERMINATION CAP
MINIMUM
HEIGHT
14.5 FT.
MINIMUM
UP TO 6FT.
HEIGHT
MAXIMUM
14.5 FT.
(WITH TWO ELBOW SETS)
MINIMUM HEIGHT OF 22 FT.
EFFECTIVE HEIGHT OF
MAXIMUM HEIGHT OF 50 FT.
MAXIMUM
UP TO 6 FT.
(ANY SYSTEM)
50 FT.
HEIGHT
MAXIMUM
30E-8DM
TERMINATION CAP
Figure 18 - Typical Residential Installations

www.desatech.com 111099-01G12
OPTIONAL GAS LINE
INSTALLATION
Continued
    
and connections must be tested
for leaks after the installation
is completed. After ensuring
that the gas valve is on, apply
soap and water solution to all

forming show a leak. Correct

    
TESTING AND DO NOT OPER-


-

Note: A DESA hood must be installed when
using an unvented gas log set (see Acces-
sories on page 16).
    -
ate an unvented gas log set in

removed.
If you install a decorative gas appliance
(vented gas log), the decorative gas appliance
must comply with the Standard for Decorative
Gas Appliance for Installation in Solid Fuel
Burning Fireplaces, ANS Z21.60, Z21.84 or
RG 2-72 and shall also be installed in accor-
dance with the National Fuel Gas Code, ANSI
7223NFPA 54 latest edition.
Seal
Opening
with
Refractory
Cement
Outside of
Fireplace
Gas
Line
Conduit
Repack
Insulation
Incoming
1/2" Black
Iron Pipe
Side
Firebrick
Finished
Side
Provide Enough Threaded
End for Fitting Connection
Figure 20 - Gas Line Installation


andincreasingtheriskofspread-

to cook or warm food.
    
has been used for wood burning,

cleaned of soot, creosote and
    
cleaner. Creosote will ignite if
heavily heated.
    
decorative vented gas log, the
damper must be removed or per-
manently locked in the fully open
positionandtheglassdoorsmust
be in the fully open position.
Doors Fully Closed
Fireplace Front
Doors
Fully Opened
Fireplace Front
OPERATION AND0
MAINTENANCE
GUIDELINES

Glass doors are optional with the replace.
When the replace is in operation, doors
must be fully opened or fully closed position
only or a re hazard may be created (see
Figure 21).
Figure 21 - Glass Doors

www.desatech.com
111099-01G 13
Figure 22 - Damper and Air Kit Handle
A replace equipped with glass doors oper-
ates mush differently than a replace with an
open front. A replace with glass doors has a
limited amount of air for combustion. Exces-
sive heat within the replace can result if too
large a re is built or if the combustion air gate
is not completely open.
The following tips should be followed to as-
sure that both the replace and the glass door
retain their beauty and function properly. Both
the ue damper and the glass doors must be
fully opened before starting the re. This will
provide sufcient combustion air and maintain
safe temperatures in the rebox.
IMPORTANT: The glass must be allowed to
warm slowly and evenly. The tempered glass will
withstand a gradual temperature rise to 550° F,
which is more than a normal re will generate.
Such materials as pitch/wax laden logs, very dry
mill end lumber and large amounts of paper or
cardboard boxes can create an excessively hot
re and should not be burned in this replace.
Always keep the re well back from the doors
and never allow ames to contact the glass.
  
equipped with glass doors
should be operated only with
doors fully opened or doors fully
closed. Doors, if left partly open,

   

Cleaning the Glass
Clean the glass with any commercial glass
cleaner or soap and water. Do not use any
abrasive material to clean the glass. Do not
clean the glass with any cool water is the glass
is still hot from the re and smoke.
A gas line or gas log lighter may be installed
for the purpose of installing a vented or vent-
free decorative gas appliance incorporating an
automatic shutoff device and complying with
the Standard for Decorative Gas Appliances for
Installation in Vented Fireplaces, ANSI Z21.60 or
American Gas Association draft requirements for
Gas Fired Log Lighters for Wood Burning Fire-
places, Draft NO. 4 dated August, 1993.
OPERATION AND
MAINTENANCE
GUIDELINES
Continued
If you wish to install an unvented (vent-free)
gas log set, only unvented gas log sets which
have been found to comply with the standard
for unvented room heaters, ANSI Z21.11.2 are
to be installed in this replace.


The damper handle, which opens and closes
the damper blade, is located in the upper front
face of the replace. Pushing the handle into
the left of the keyway slot will free the damper
blade to automatically open. Pushing the
handle in to the right will lock the damper
blade closed (see Figure 22).
The outside air kit handle is located at the left
hand side of the replace (see Figure 22).
Pulling the handle out will free the outside air
door to open. Pushing the handle in will lock
the door closed.

grate with DESA model 111100-01
only.Thisgratehasbeendesigned
-

For further operating guidelines, instructions
and warranty information, please refer to your
homeowner's guide or contact your authorized
dealer.
OPENCLOSE
Damper
Handle
Outside Air
Kit Handle
Keyway
Slot
Handle
Retainer

www.desatech.com 111099-01G14
ILLUSTRATED PARTS BREAKDOWN

S42, S42H, S42R, S42RH, VS42(1), VS42H(1), VS42R AND VS42RH
9
26
16
33
27
16
27
4
32
34
19
12
25
20
30
17
8
1
5
21
2
35
18
11
14
3
13
22
10 6
31
7
37/38
36
28
29
24
23
15

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111099-01G 15

NO. PART NO. DESCRIPTION 
1 107797-01 Insulation Pan 1
2** Fireplace Top 1
3107800-01 Fireplace Surround 1
4 106642-01 Air Rod Retainer 1
5 106643-01 Damper Rod Retainer 1
6** Firebox Bottom 1
7** Firebox Surround 1
8 ** Air Separator 1
9See Below Left Refractory 1
10 See Below Right Refractory 1
11 See Below Rear Refractory 1
12 See Below Bottom Rear Refractory 1
13 See Below Bottom Front Refractory 1
14 106683-01 Firebox Support Leg 4
15 106687-01 Damper Can Collar 1
16 107839-01 Screen Rod 2
17 ** Firebox Top Assembly 1
18 106703-01 Air Kit Door Assembly 1
19 ** Face Weldment 1
20 110892-02 Air Deector 1
21 111327-02 Fireplace Top Insulation 1
PARTS LIST

VS42H(1), VS42R AND VS42RH
This list contains replaceable parts used in your replace. When ordering parts,see Replace-
ment Parts on page 16 of this manual.

NO. PART NO. DESCRIPTION 
22 ** Access Panel 1
23 107854-01 Right Refractory Bracket 1
24 107854-02 Left Refractory Bracket 1
25 111100-01 Grate 1
26 11418 Push-On Nut 2
27 110891-01 Stainless Screen 2
28 16405 Collar Insulation 1
29 20023 Chimney Starter Collar 1
30 20027 Refractory Retainer 2
31 106539-02 Grate Retainer 2
32 111073-01 Door Stop 1
33 111204-01 Pivot Clip 2
34 20090 Spring Clip 2
35 20280 Top Spacer 4
36 21171 Conduit Plate Cover 4
37 21379 Gas Conduit 2
38 21380 Gas Conduit 2

106625-01 Home Owner’s Guide 1
** Not a eld replaceable part

NO. PART NO. DESCRIPTION 
9107812-03 Left Refractory, Textured White Brick • 1
108169-03 Left Refractory, Textured White Herringbone • 1
107812-02 Left Refractory, Textured Red Brick • • 1
108169-02 Left Refractory, Textured Red Herringbone • • 1
107812-01 Left Refractory, Smooth White Brick • 1
108169-01 Left Refractory, Smooth White Herringbone • 1
10 107814-03 Right Refractory, Textured White Brick • 1
108170-03 Right Refractory, Textured White Herringbone • 1
107814-02 Right Refractory, Textured Red Brick • • 1
108170-02 Right Refractory, Textured Red Herringbone • • 1
107814-01 Right Refractory, Smooth White Brick • 1
108170-01 Right Refractory, Smooth White Herringbone • 1
11 107816-03 Rear Refractory, Textured White Brick • 1
108171-03 Rear Refractory, Textured White Herringbone • 1
107816-02 Rear Refractory, Textured Red Brick • • 1
108171-02 Rear Refractory, Textured Red Herringbone • • 1
107816-01 Rear Refractory, Smooth White Brick • 1
108171-01 Rear Refractory, Smooth White Herringbone • 1
12 111091-01 Bottom Rear Refractory, White Brick • • • • 1
111091-02 Bottom Rear Refractory, Red Brick • • • • 1
13 111092-01 Bottom Front Refractory, White Brick • • • • 1
111092-02 Bottom Front Refractory, Red Brick • • • • 1
S42 S42H S42R S42RH VS42(1) VS42H(1)

VS42R VS42RH

www.desatech.com 111099-01G16
24-8DM
48-8DM
36-8DM
18-8DM
12-8DM
EP-42
DOUBLE WALL PIPE
EMBER PROTECTOR STANDARD BRICK LINER HERRINGBONE
BRICK LINER
GRATE
PN 111100-01
36-8HT
48-8HT
12-8HT
24-8HT
18-8HT
ROUND TOP
TERMINATIONS
WITH LOUVERS
RTL-8DM
ROUND TOP
TERMINATIONS
WITH SLIP SECTION
RTTL-8DM
RTT-8DM
ROUND TOP
TERMINATIONS
RTL-8DM
RT-8DM
Rear
Left Side Front Bottom
Bottom
Right Side
AK4
OPTIONAL OUTSIDE AIR KIT
FOR SIDE WALL INSTALLATION
PN 01576
HEARTH
EXTENSION HE-42
30° OFFSET AND RETURN
ANTI-DRAFT SHIELD
(ROUND TOP TERMINATION
ONLY)
30E-8DM
STORM COLLAR
ROOF FLASHING BI-FOLD GLASS DOOR
0 TO 6/12 PITCH - V6F-8DM
6/12 TO 12/12 PITCH - V12F-8DM
ANTIQUE BRASS FINISH GA6053
POLISHED BRASS FINISH GA6052
BLACK PAINTED FINISH GA6050
BDO42 - BLACK FINISH
BDO42B - BRUSHED BRASS FINISH
BDO42P - PLATINUM FINISH
ADJUSTABLE HOOD
REQUIRED WHEN INSTALLING
A VENT-FREE GAS LOG
IN THIS FIREPLACE
FS-8DM
SC1-1
FOR RT-8DM AND RTL-8DM
SC2-1 FOR RTT-8DM
AND RTTL-8DM
FIRESTOP SPACER
SQUARE
CHASE-TOP
TERMINATION
ET-8DM
ETO-8DM
ECONO-TOP
TERMINATION
WITH SLIP
SECTION
ETL-8DM
ETLO-8DM
DRAIN PAN
DP42
OPTIONAL OUTSIDE
AIR KIT FOR
FLOOR INSTALLATION
AK4F
See Parts List on page 15 for part numbers.
TECHNICAL SERVICE
You may have further questions about installation, operation, or troubleshooting. If so, contact
DESA Heating Products’ Technical Service Department at 1-866-672-6040. When calling please
have your model and serial numbers of your heater ready.
You can also visit DESA Heating Products’ technical services web site at www.desatech.com.
REPLACEMENT PARTS
ACCESSORIES

www.desatech.com
111099-01G 17
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www.desatech.com 111099-01G18
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111099-01G 19
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NOTES

2701 South Harbor Blvd
Santa Ana, CA 92704
www.desatech.com
1-688-672-6040
NOT A UPC
111099-01
Rev. F
03/07
111099 01