Comfort Glow B42LI-M Operation manual

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 standard or for use with a vent-free
gas log heater approved to ANS Z21.11.2 standard. A
DESA Heating, LLC hood must be installed when using
a vent-free log heater (see Accessories, page 18).
      
     
APPLIANCE.


etc.) should be contacted before installation to deter-
mine the need to obtain a permit.


WOOD BURNING FIREPLACE
OWNER’S OPERATION AND
INSTALLATION MANUAL
MODEL B42LI-M


www.desatech.com 115386-01B2
SAFETY


the manufacturer's instructions


use with this insert.

 

or liquids in the vicinity of this
or any other appliance.
 
appliance should be located
     
furniture and draperies.
 

the appliance.
    -




only. When processed wood
      
poke or stir the logs while they

that have been evaluated for

     
caution markings on packaging
prior to use.

be used as a substitute for a fur-

for supplemental heat only.
-
  
service or maintenance can


for assistance or additional in-
   
installer or local distributor.


Before beginning installation of this replace,
read these instructions through completely.
• This DESA Heating, LLC replace and its
components are safe when installed ac-
cording to this installation manual. Unless
you use DESA Heating, LLC components,
which have been designed and tested for
the replace system, you may cause a re
hazard.
• The DESA Heating, LLC warranty will be
voided by and DESA Heating, LLC dis-
claims 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 Heating,
LLC in combination with a DESA Heat-
ing, LLC replace system.
Proper installation is the most important step
in ensuring safe and continuous operation of
replace. Consult the local building codes as
to the particular requirements concerned with
the installation of all factory built replaces.
TABLE OF CONTENTS
Safety .................................................................. 2
Specications ...................................................... 3
Fireplace Installation............................................ 4
Venting Installation .............................................. 7
Optional Gas Line Installation............................ 13
Operation and Maintenance .............................. 14
Technical Service............................................... 15
Parts .................................................................. 16
Replacement Parts ............................................ 18
Accessories ....................................................... 18

www.desatech.com
115386-01B 3
SPECIFICATIONS
0" TO
BOTTOM
OUTSIDE AIR
(LEFT SIDE
ONLY)
TOP SPACERS
3/4" AIR
SPACE
BACK
AND
SIDES
HEARTH
EXTENSION
66" X 20"
12"
EACH SIDE
1" AIRSPACE
TO COMBUSTIBLE
COMBUSTIBLE
WALL BOARD
0" TO
MATERIAL
NO COMBUSTIBLE
MATERIAL ON FACE
GAS LINE
KNOCK OUT
AIR KIT KNOCK OUTS
ROUND TOP TERMINATION
GAS LINE
KNOCK OUTS
LEFT SIDE
RIGHT SIDE
NOT LESS
THAN 14" TO
PERPENDICULAR
SIDEWALL
SQUARE CHASE-TOP
TERMINATION
8.25"
10.375"
13"
37.5"
33"
44"
42"
21.5"
32"
6.5"
38.85"
14.438"
1.375"
25.375"
7"
7"
1"
8.25"
14"
44"
1"
1.75"
0.625"
28.5"
21.125"

www.desatech.com 115386-01B4
FIREPLACE INSTALLATION

To determine safest and most efcient location
for replace, you must take into consideration
the following guidelines:
1. Location must allow for proper clearances
(see Figures 1 and 2).
2. Consider a location where replace will
not be affected by drafts, air conditioning
ducts, windows or doors.
3. A location that avoids 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 7).


Back and sides of replace 3/4" minimum*
Floor** 0" minimum
Perpendicular wall to opening 14" minimum
Top spacers 0" minimum
Mantel clearances see Mantels, page 6
Chimney outer pipe surface 1" minimum
* Not required at nailing anges
** See step 2 of Framing
-
quired air spaces with insulation
or other materials.

Minimum height of chimney, measured from
base of replace to ue gas outlet of termina-
tion, is 11.5 feet for straight ue or a ue with
one elbow set. Maximum distance between
elbows is 2 feet. For systems with two elbow
sets, minimum height is 22 feet. Maximum
height of any system is 50 feet. This measure-
ment includes replace, chimney sections and
height of termination assembly at level of ue
gas outlet (see Figure 18, page 11).

1. Frame opening for replace using dimen-
sions shown in Figures 1 and 2.
2. If replace is to be installed directly on
carpeting, tile (other than ceramic) or any
combustible material other than wood
ooring, replace must be installed upon
a metal or wood panel extending full width
and depth of replace.
3. Set replace directly in front of this open-
ing and slide unit back until nailing anges
touch side framing.
4. Check level of replace and shim with
sheet metal if necessary.
5. Before securing fireplace to prepared
framing, ember protector must be placed
between hearth extension (not included)
and under bottom front edge of replace
to protect against glowing embers falling
through. If replace is to be installed on
a raised platform, a Z-type ember protec-
tor (not included) must be fabricated to
t your required platform height. Ember
protector should extend under replace a
minimum of 1 1/2". Ember protector should
be made of galvanized sheet metal (28
gauge minimum) to prevent corrosion.
6. Using screws or nails, secure replace to
framing through anges located on sides
of replace.
22"
37.625"
44.25"
Figure 1 - Framing Dimensions
52 1/2"
15 7/8"
22 1/2"
72 7/8"
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
115386-01B 5

A hearth extension projecting a minimum of
20" in front of and a minimum of 12" beyond
each side of replace opening is required to
protect combustible oor construction in front
of replace. Fabricate a hearth extension
using a material which meets the following
specications: a layer of noncombustible,
inorganic material having a thermal conductiv-
ity of K=0.84 BTU IN/FT, HR. F (or less) at 1"
thick. For example, if 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 manufacturer or supplier of
noncombustible material. If hearth extension
is to be covered, use noncombustible mate-
rial such as tile, slate, brick, concrete, metal,
glass, marble, stone, etc. Provide a means
to prevent hearth extension from shifting and
seal gap between replace frame and hearth
extension with a noncombustible material
(see Figure 3).

is to be installed only as shown

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
Seal Gap
Fireplace Front
Ember Protector
Fireplace Front
Elevated
Do Not Block Louver
Ember Protector
Seal Gap
Hearth
Extension


NO

www.desatech.com 115386-01B6
FIREPLACE INSTALLATION
Continued
Figure 4 - Mantel Clearances to
Combustible Material
Electrical
Bushing
Electrical
Cover
Plate
Rocker
Switch
Figure 6 - Fan Switch-Electrical Bushing
Electrical
Housing
Wire Nut (3x)
(Not Supplied)
Outer Wrapper
of Fireplace
Electrical Cover
Plate and
Electrical Bushing
Fireplace Chassis
Ground
To Power
Source
Receptacle
(Supplied)
Power Source Wiring
(Not Supplied)
Prewired Receptacle
and Ground

A mantel may be installed if desired (see
Figure 4). Woodwork such as wood trims,
mantels or any other combustible material
projecting from front face must not be placed
within 12" of replace opening (and within 9"
of top louver opening). Combustible materi-
als above 12" and projecting more than 1 1/2"
from replace must not be placed less than
12" from top opening of replace (NFPA STD
211, Sec. 7-3.3.3).
Mantels or any other combustible material
may come up to side edge of black metal face
of replace if projection from front face falls
within limits shown in Figure 5.

Fan or blower kit is optional with this replace
(for circulating models only). Use of blowers or
fans other than those manufactured by DESA
Heating, LLC voids warranty. Fan is operated
by pressing rocker switch (see Figure 6) in
lower right hand corner of fireplace face.
Blower is operated by turning control knob
(not shown).
Fan/blower kit electrical connections are
made through electrical cover plate on side
of replace a shown in Figure 6.
FIREBOX
SAFE ZONE
Figure 5 - Side Mantel Clearance
Top View of Fireplace
Min. 12" from
Perpendicular Side Wall
1"
0.625" Max.
33°
8"
Wiring Instructions
1. Remove electrical cover plate with bush-
ing from replace by removing 2 sheet
metal screws as shown in Figure 6.
2. Slide power source wiring through electri-
cal bushing opening and electrical cover
plate and make all necessary connec-
tions.
3. Slide all wiring connections in electrical
housing as shown in Figure 6.
4. Secure electrical cover plate with screws
previously removed.
Note: Electrical housing and cover plate have
sharp edges. Wear protective gloves.
Sheet
Metal
Screws
12 1/4" Ref.
1 1/2"
Max.
Upper Section
of Circulating
Fireplace
6"
Ref.
9"
Min.
33°
3" Nom. *Note: Drawing
Not To Scale
Safe Zone For
Projection of
Combustible
Materials
Combustible
Material
15"
Min.
12"
Min.
Fireplace Opening
To p of
Louvered
Opening

www.desatech.com
115386-01B 7
Figure 8 - Lineal Gain

  
42" Fireplace 37 1/2"
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
measured to the ue gas outlet height.
Hemmed
End
8" Stainless
Inner Pipe
12 3/8"
Galvanized
Outer Pipe
Figure 7 - 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)
VENTING INSTALLATION


Installation of outside air kit should be per-
formed during rough framing of replace due
to the nature of it's location. Outside combus-
tion air is accessed through a vented crawl
space (AK4F) or through a sidewall (AK4).
See Figure 24 on page 15 for instruction of
operating air kit.
   
inlet ducts shall not terminate
in attic space.
    
      

termination.

DESA Heating, LLC chimney system con-
sists of 12", 18", 24", 36" and 48" snap-lock,
double-wall pipe segments, planned for
maximum adaptability to individual site re-
quirements. Actual lengths gained after tting
overlaps must be taken into consideration
(lineal gain) and are given in lineal gain chart
(see Figure 8).
Lineal gain is actual measurable length of a
part after two or more parts are connected.
    
collar around chimney at top of


chimney enclosure.

www.desatech.com 115386-01B8
VENTING INSTALLATION
Continued
Figure 9 - Typical Offset Installation
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


Each double wall chimney section consists
of a galvanized outer pipe, a stainless steel
inner ue pipe and a wire spacer. Pipe sec-
tions must be assembled independently as
chimney is installed. When connecting chim-
ney directly to replace, inner ue pipe sec-
tion must be installed rst with lanced side
up. Outer pipe section can then be installed
over ue pipe section with hemmed end up.
Press down on each pipe section until lances
securely engage hem on replace starter.
Wire will assure proper spacing between
inner and outer pipe sections.
Note: For Canada, use chimney parts des-
ignated HT.
Opening in collar around

not be obstructed. Never use

enclosure.
Continue to assemble chimney sections as
outlined, making sure that both inner and
outer pipe sections are locked together. When
installing double wall snap-lock chimney to-
gether, it is important to assure joint between
chimney sections is locked. Check by pulling
chimney upward after locking. Chimney will
not come apart if properly locked. It is not
necessary to add screws to keep chimney to-
gether (exception - see Figure 11, page 9).

1. To achieve desired offset, you may install
combinations of 12", 18", 24", 36" and
48" length of double wall pipe (see offset
chart, page 7, and Figure 9).
Note: For systems with 2 elbow sets, mini-
mum height is 22 feet. Maximum height
for any system is 50 feet.
2. Chimney weight above offset rests on
return elbow. Straps must be securely
nailed to rafters or joists (see Figure 10,
details A and B, page 9).
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 9).
4. All pipe connections between offset and
return must be secured with two screws
on outer pipe only (see Figure 11, page
9). Do not penetrate inner stainless.

www.desatech.com
115386-01B 9
Figure 11 - Elbow Offset
B
A
Screws
Figure 10 - Ceiling Support Pipe 12S-8DM
  
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)
2" Min.
Straps Straps
Straps
Straps
Detail A
Return Elbow
Detail B
Angle
Firestop
See Detail A
See Detail B
Ceiling Support
Pipe 12S-8DM
VENTING INSTALLATION
Continued

www.desatech.com 115386-01B10
VENTING INSTALLATION
Continued
Pitch Slope Opening



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
4. Remove shingles around opening mea-
sured. Cut out this section.
5. Add next sections of pipe until end
penetrates roof line. Check to see that
proper clearances are maintained. Extend
chimney by adding sections of double wall
pipe until pipe is minimum of 30" above
highest point of roof cutout. Termination
and chimney must extend a minimum of
36" above highest point where it passes
through roof.
Figure 14 - Roof Opening Measurements


Determine ashing to be used with roof open-
ing 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 nailing through
shingles (see Figure 15, page 11). DO NOT
NAIL THROUGH FLASHING CONE.

When installing ashing on a metal roof, it
is required that putty tape be used between
ashing and roof. Flashing must be secured
to roof using #8 x 3/4" screws and then sealed
with roof coating to prevent leakage through
screw holes. A roof coating must also be ap-
plied around perimeter of ashing to provide
a proper seal.

Firestop spacers are required at each point
where chimney penetrates a floor space.
Their purpose is to establish and maintain
required clearance between chimney and
combustible materials. When pipe passes
through a framed opening into a living space
above, restop must be placed onto ceiling
from below as shown in Figure 12.
They also provide complete separation from
one oor space to another or attic space as
required by most codes. When double wall
pipe passes through a framed opening into
an attic space, restop must be placed into
an attic oor as shown in Figure 13.
Figure 12 - Firestop Spacer with Living
Space Above Ceiling
Figure 13 - Firestop Spacer with Attic
Space Above Ceiling

To maintain a 2" clearance to pipe on a roof with
a pitch, a rectangular opening must be cut.
1. Determine center point where pipe will
penetrate the roof.
2. Determine 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" measure
horizontally down from roof rafters.
3. Use roof opening chart (Figure 14) to
determine correct opening length and
ashing required.
If area above is a living space, install
restop below framed hole.
If area above is an attic or insulated area,
install restop above framed hole.
30"
(76.2 cm)
Minimum Measurements
Opening "A"
16
3
/
8
"
(48.3 cm)
2"
(5.1
cm)
2"
(5.1
cm)
2"
(5.1 cm)

www.desatech.com
115386-01B 11
Nail Only
Outer
Perimeter
of Flashing
Storm Collar
Underlap Shingles
at Bottom
Overlap
Shingles Top
and Sides Only
Figure 15 - Flashing Installation
Figure 16 - Storm Collar
Chimney
Pipe
Waterproof
Caulk
Storm
Collar Flashing
Storm Collar Installation (SC1 or SC2)
Place storm collar over pipe and slide down
until it is snug against open edge of ashing
(see Figure 16). Use SC1 for all round ter-
minations and SC2 for all terminations with
slip sections. Apply waterproof caulk around
perimeter of collar to provide a proper seal.
Terminations/Spark Arrestor
Fireplace system must be terminated with
listed round top or chase terminations. In any
case, refer to installation instructions supplied
with termination. Terminations approved for
this replace are 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 17
shows an RTL-8DM round top termination.
-
-
low the installation instructions
provided with the termination
being used.
Flashing
Cone
VENTING INSTALLATION
Continued
Attach Bracket
Tabs to
Outer Pipe
(3 Places)
Secure with
Screws
RTL-8DM Level of Flue
Gas Outlet
Caulk
Collar
Flashing
Underlap Shingles
Bottom Only
Figure 17 - Termination
Overlap
Shingles Top
and Sides
Terminations with 16" slip pipe sections are
available. RTT-8DM and RTTL-8DM are
approved for flashing installations. When
needed, these adjustable terminations may
be used in combination with pipe assembly
to achieve correct chimney height.
Note: In the rare instance there is a problem
with side driven rain or wind or chimney is
not drafting properly, an ADS-8DM (Anti-Draft
Shield) can be used with round terminations.
Flue Pipe of
RTL-8DM
Inside Inner
Pipe of
Chimney
CHASE INSTALLATIONS
Instructions for chase installations are includ-
ed with 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 difference of 18"
(see Figure 18).
Note: If a decorative shroud is to be installed,
contact manufacturer for specications.
18" MIN. TYP.
24" MIN. 24" MIN.
Figure 18 - Multiple Chase Installation

www.desatech.com 115386-01B12
10'
2' Min.
10'
3' Min.
2' Min. 3' Min.
Level of
Flue Gas
Outlet
Figure 19 - 10 Foot Rule

All ue gas outlet chimney terminations must
extend a minimum of 3 feet in height above
highest point where it passes through roof and
must be at least 2 feet above highest point of
the roof that is within a horizontal distance of
10 feet (see Figure 19).
VENTING INSTALLATION
Continued

Combustible materials, such as wallboard,
gypsum board, sheet rock, drywall, plywood,
etc., may make direct contact with sides and
top around replace face. It is important that
combustible materials do not overlap face
itself. Brick, glass, tile or other noncombustible
materials may overlap front face provided
they do not obstruct essential openings such
as louvered slots. When overlapping with
a noncombustible facing material, use only
noncombustible mortar or adhesive.
30E-8DM
EFFECTIVE HEIGHT
OF TERMINATION CAP
EFFECTIVE HEIGHT
OF TERMINATION CAP
EFFECTIVE HEIGHT
OF TERMINATION CAP
EFFECTIVE HEIGHT
OF TERMINATION CAP
MINIMUM
HEIGHT
14.5 FT.
MINIMUM
UP TO
6FT. MAX.
UP TO
6FT. MAX.
HEIGHT
14.5 FT.
MIN. HEIGHT
OF 22 FT. (WITH
2 ELBOW SETS)
MAX. HEIGHT OF
50 FT.
MAX. HEIGHT
50 FT.
(ANY SYSTEM)
30E-8DM
Figure 20 - Typical Residential Installations

www.desatech.com
115386-01B 13
OPTIONAL GAS LINE INSTALLATION
Figure 21 - Gas Line Knockout
Side
Firebrick
Finished
Side
Refractory
Knockout
Plug
Outside of
Fireplace
Gas Line
Conduit
Insulation
Gas
Conduit
Cover
1/2" Dowel
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 refracto-
ry or rebrick wall located above refractory
hearth oor. 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 21).
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.
3. Run a 1/2" black iron gas line into re-
place through 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 22).
Note: Secure incoming gas line to wood
framing to provide rigidity for threaded
end.
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 gas appliance or cap off
gas line if desired.

connections must be tested for
leaks after installation is com-
pleted. After ensuring that gas
valve is on, apply soap and water
solution to all connections and

leak. Correct all leaks at once.

    


   
   

Note: A DESA Heating, LLC hood must be
installed when using an unvented gas log set
(see Accessories on page 18).

-
place with chimney removed.
If you install a decorative gas appliance (vent-
ed gas log), 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 accordance with
the National Fuel Gas Code, ANSI 7223NFPA
54 latest edition.


and increasing the risk of spread-

cook or warm food.
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 22 - Gas Line Installation

www.desatech.com 115386-01B14
OPTIONAL GAS LINE INSTALLATION
Continued
    
has been used for wood burn-

be cleaned of soot, creosote and
    
cleaner. Creosote will ignite if
heavily heated.
OPERATION AND MAINTENANCE
Figure 23 - Glass Doors

Clean glass with any commercial glass
cleaner or soap and water. Do not use any
abrasive material to clean the glass. Do not
clean glass with any cool water if glass is still
hot from 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 Fireplaces, Draft NO. 4 dated
August, 1993.
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.
   
a decorative vented gas log,
damper must be removed or
permanently locked in fully open
position and glass doors must
be in fully open position.

Glass doors are optional with this replace.
When replace is in operation, doors must be
fully opened or fully closed position only or a
re hazard may be created (see Figure 23).
A replace equipped with glass doors oper-
ates much 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 replace can result if too large
a re is built or if combustion air gate is not
completely open.
The following tips should be used to assure
that both fireplace and glass door retain
their beauty and function properly. Both the
ue damper and glass doors must be fully
opened before starting a re. This will provide
sufcient combustion air and maintain safe
temperatures in rebox.
IMPORTANT: The glass must be allowed
to warm slowly and evenly. 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 re
back from doors and never allow ames to
contact glass.
  
equipped with glass doors
should be operated only with
doors fully opened or doors fully
closed. Doors, if left partly open,

   

Doors Fully Closed
Doors Fully Opened
Fireplace Front
Fireplace Front

www.desatech.com
115386-01B 15
Figure 24 - Damper Handle Location
OPERATION AND MAINTENANCE
Continued

Damper handle, which opens and closes
damper blade, is located inside rebox at
center towards back wall (see Figure 24).
Pushing handle back into keyway slot will
free damper blade to automatically open.
To close, push handle back into keyhole slot
then pull down and forward to lock it in place
(see Figure 25).
-
place grate with DESA Heating,
LLC model 109910-01 only. This
grate has been designed to keep
 

-
tions and warranty information, please re-
fer to your homeowner's guide or contact
your authorized dealer.
Damper
Handle
12
3
12
3
Damper
Weight
To Close Damper To Open Damper
Figure 25 - Damper Rod
TECHNICAL SERVICE
You may have further questions about installa-
tion, operation, or troubleshooting. If so, con-
tact DESA Heating, LLC at 1-866-672-6040.
When calling please have your model and
serial numbers of your heater ready.
You can also visit DESA Heating, LLC’s web
site at www.desatech.com.

www.desatech.com 115386-01B16
PARTS

11
27
30 23
22
24
10
14
25
4
17
3
2
1
5
20
28
12
7
15
9
16
13
8
26
6
29
19
18
21

www.desatech.com
115386-01B 17
PARTS

This list contains replaceable parts used in your replace. When ordering parts, see Replace-
ment Parts on page 18 of this manual.

NO.   
1** Insulation Pan 1
2** Air Separator 1
3** Firebox Top 1
4 108302-01 Air Deector 1
5** Wrapper Top 1
6** Firebox Wrapper 1
7 108304-01 Outer Wrapper/Insulation Assembly 1
8** Firebox Floor 1
9 ** Wrapper Bottom 1
10 108298-02 Front Face Weldment 1
11 see page 18 Left Side Brick Liner 1
12 see page 18 Rear Brick Liner 1
13 see page 18 Right Side Brick Liner 1
14 see page 18 Bottom Brick Liner 1
15 see page 18 Front Bottom Brick Liner 1
16 21198 Blower Access Plate 1
17 20027 Refractory Retainer 2
18 109870-01 Circulation Plate 1
19 21366 Insulation Retainer 1
20 20280 Top Standoff 4
21 20023 Chimney Starter Collar 1
22 20088 Door Stop 1
23 11418 Push On Nut 2
24 20090 Spring Clip 2
25 107001-02 Wood Burning Grate 1
26 106539-02 Grate Retainers 2
27 108424-01 Screen 2
28 ** Side Damper Weldment 1
29 107128-01 Gas Conduit 4
30 108780-01 Screen Rod 2

110037-01 Electrical Duct Assembly 1
** Not a eld replaceable part

www.desatech.com 115386-01B18



ACCESSORIES

 
 
 
 
 









Required when installing a vent-free gas log
in this replace.




BDB42 - Black
BDB42B - Brushed Brass
BDB42P - Platinum
REPLACEMENT PARTS








www.desatech.com
115386-01B 19







SLIP SECTION


INSTALLATION - AK4

INSTALLATION





SLIP SECTION

ACCESSORIES
Continued

DESA Heating, LLC
2701 Industrial Drive
Bowling Green, KY 42101
www.desatech.com
1-866-672-6040
115386-01
Rev. B
12/08
NOT A UPC
115386 01