Desa L32, VL36ZNR, VL36EN, VL36EP, VL32HP, LZPR, L36, VL36, L42 User Manual
UNVENTED (VENT-FREE) FIREPLACE
OWNER’S OPERATION AND INSTALLATION MANUAL
MANUALLY CONTROLLED
MODELS
NATURAL GAS
(V)L32(HN, LHN)
(V)L36(EN, LEN)
PROPANE/LP GAS
(V)L32(HP, LHP)
(V)L36(EP, LEP)
REMOTE CONTROL READY
MODELS
NATURAL GAS
(V)L36(ZNR, LZNR)
(V)L42(ZNR, LZNR)
PROPANE/LP GAS
(V)L36(ZPR, LZPR)
(V)L42(ZPR, LZPR)
WARNING: If the information in this manual is not followed exactly, a fire or explosion may result causing
property damage, personal injury or loss of life.
— Do not store or use gasoline or other flammable
vapors and liquids in the vicinity of this or any other
appliance.
— WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electrical switch; do not use any
phone in your building.
• Immediately call your gas supplier from a neighbor’s
phone. Follow the gas supplier’s instructions.
• If you cannot reach your gas supplier, call the fire
department.
— Installation and service must be performed by a quali-
fied installer, service agency or the gas supplier.
Save this manual for future reference.
For more information, visit www.desatech.com
WARNING: Improper installation, adjustment, alteration, service or maintenance can cause injury or property damage. Refer to this manual for correct installation
and operational procedures. For assistance or additional information consult a qualified installer, service
agency or the gas supplier.
WARNING: FOR USE ONLY WITH A LISTED DECORATIVE TYPE UNVENTED ROOM HEATER. DO NOT BUILD
A WOOD FIRE.
This appliance may be installed in an aftermarket,* permanently located, manufactured (mobile) home, where
not prohibited by local codes.
This appliance is only for use with the type of gas indicated on the rating plate. This appliance is not convertible for use with other gases.
* Aftermarket: Completion of sale, not for purpose of resale, from the manufacturer
State of Massachusetts: The installation must be made by a licensed plumber or gas fitter in the
Commonwealth of Massachusetts.
Sellers of unvented propane or natural gas-fired supplemental room heaters shall provide to each
purchaser a copy of 527 CMR 30 upon sale of the unit.
Vent-free gas products are prohibited for bedroom and bathroom installation in the Common
wealth of Massachusetts.
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TABLE OF CONTENTS
Safety Information ............................................... 3
Local Codes ........................................................ 4
Product Features ................................................. 4
Illustrated Parts Breakdown and Pars List ........ 36
Warranty Information ............................ Back Page
115254-01A
29
33
34
SAFETY INFORMATION
WARNING: This product contains and/or generates chemicals
known to the state of California
to cause cancer or birth defects
or other reproductive harm.
IMPORTANT: Read this owner’s
manual carefully and completely
be f o r e tr y i n g to assemb l e ,
operate or service this heater.
Improper use of this heater can
cause serious injury or death
from burns, fire, explosion,
electrical shock and carbon
monoxide poisoning.
DANGER: Carbon monoxide
poisoning may lead to death!
Carbon Monoxid e Poiso nin g: Early signs of
carbon monoxide poisoning resemble the flu, with
headaches, dizziness or nausea. If you have these
signs, the heater may not be working properly. Get fresh air at once! Have heater serviced. Some
people are more affected by carbon monoxide than
others. These include pregnant women, people with
heart or lung disease or anemia, those under the
influence of alcohol and those at high altitudes.
Natural and Propane/LP Gas: Natural and pro-
pane/LP gases are odorless. An odor-making agent
is added to the gas. The odor helps you detect a gas
leak. However, the odor added to the gas can fade.
Gas may be present even though no odor exists.
Make certain you read and understand all warnings.
Keep this manual for reference. It is your guide to
safe and proper operation of this heater.
WARNING: Do not allow fans
to blow directly into the fireplace.
Avoid any drafts that alter burner
flame patterns. Ceiling fans can
create drafts that alter burner
flame patterns. Altered burner
patterns can cause sooting.
Due to high temperatures, the
appliance should be located out
of traffic and away from furniture
and draperies.
Do not place clothing or other
flammable material on or near
the appliance. Never place any
objects on the heater.
Fireplace front and screen be
come very hot when running fire
place. Keep children and adults
away from hot surfaces to avoid
burns or clothing ignition. Fireplace will remain hot for a time
after shutdown. Allow surfaces
to cool before touching.
Carefully supervise young children when they are in the room
with fireplace. When using the
optional hand-held remote accessory, keep selector switch
in the OFF position to prevent
children from turning on burners
with remote.
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WARNING: Any change to
this heater or its controls can
be dangerous.
You must operate this fireplace
with the fireplace screen and
hood in place. Make sure fireplace screen and hood are in
WARNING: Do not use a
place before running heater.
blower insert, heat exchanger
insert or other accessory not ap
proved for use with this heater.
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Keep the appliance area clear
and free from combustible materials, gasoline and other flammable vapors and liquids.
115254-01A3
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SAFETY INFORMATION
Continued
1.
This appliance is only for use with the type of
gas indicated on the rating plate. This appliance
is not convertible for use with other gases.
2. Do not place propane/LP supply tank(s) inside any structure. Locate propane/LP supply
tank(s) outdoors (propane/LP units only).
3. If you smell gas
• shut off gas supply
• do not try to light any appliance
• do not touch any electrical switch; do not use
any phone in your building
• immediately call your gas supplier from
a n eighbor ʼs phon e . Follo w the ga s
supplierʼs instructions
• if you cannot reach your gas supplier, call
the fire department
4. This fireplace shall not be installed in a bed
room or bathroom.
5. Do not use this fireplace as a wood-burning
fireplace. Use only the logs provided with
the fireplace.
6. Do not add extra logs or ornaments such as
pine cones, vermiculite or rock wool. Using
these added items can cause sooting. Do not
add lava rock around base. Rock and debris
could fall into the control area of fireplace.
7. To prevent the creation of soot, follow the instruc
tions in Cleaning and Maintenance, page 28.
8. Before using furniture polish, wax, carpet
cleaner or similar products, turn heater off. If
heated, the vapors from these products may
create a white powder residue within burner
box or on adjacent walls or furniture.
9. This fireplace needs fresh air ventilation to run
properly. This fireplace has an Oxygen Deple
tion Sensing (ODS) safety shutoff system. The
ODS shuts down the fireplace if enough fresh
air is not available. See Air for Combustion and Ventilation, page 7. If fireplace keeps
shutting off, see Troubleshooting, page 29.
10. Do not run fireplace
• where flammable liquids or vapors are used
or stored
• under dusty conditions
11. Do not use this fireplace to cook food or burn
paper or other objects.
12. Do not use fireplace if any part has been exposed
to or under water. Immediately call a qualified
service technician to inspect the fireplace and to
replace any part of the control system and any
gas control which has been under water.
4
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13. Do not operate fireplace if any log is broken.
Do not operate fireplace if a log is chipped
(dime-sized or larger).
14. Turn fireplace off and let cool before servicing.
Only a qualified service person should service
and repair fireplace.
15. Operating fireplace above elevations of 4,500
feet could cause pilot outage.
16.
To prevent performance problems in propane/LP
units, do not use propane/LP fuel tanks of less
than 100 lbs. capacity (propane/LP units only).
17.
Provide adequate clear ances around a ir
openings.
LOCAL CODES
Install and use fireplace with care. Follow all local
codes. In the absence of local codes, use the lat
est edition of The National Fuel Gas Code ANSI Z223.1/NFPA 54*.
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*Available from:
American National Standards Institute, Inc.
National Fire Protection Association, Inc.
Note: Where listed vented decorative logs are
required, thermostat operation is not permitted.
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PRODUCT FEATURES
OPERATION
This firebox is designed for use with approved ANSI
Z21.11.2 decorative type unvented room heaters.
(Physical size limitations apply. Refer to minimum
firebox requirements supplied with log heater.) It
requires no outside venting or chimney making in
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stallation easy and inexpensive. When used without
the blower, the firebox requires no electricity making it ideal for emergency backup heat.
BLOWER ACCESSORY
The circulating models will accept a rotary type
fan (model BK) accessory. The blower circulates
heated air from the firebox into the room. Use of
blower is optional.
REFRACTORY BRICK LINER
Your firebox may feature a concrete refractory
brick liner. As with all concrete liners, this liner
may develop slight cracks when exposed to heat.
These cracks will not affect the performance of
the fireplace or vent-free gas logs.
1430 Broadway
New York, NY 10018
Batterymarch Park
Quincy, MA 02269
115254-01A
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251/8"
291/2"
347/16"
363/8"
Standoffs
221/2"
4"
291/2"
163/4"
187/16"
321/4"
361/2"
1415/16"
65/16"
33/8"
6"
815/16"
93/4"
12 1/4"
19 1/2"
16 11/16"
21/4"
19/16"
29/16"
81/8"
2 13/16"
8 5/8"
41/4"
31/2"
Built-In
Side
Nailing
Flanges
Square
Gas Line
Access
Holes
Electrical
Access Hole
5/8"
LOCATING FIREBOX
PLANNING
Plan where you will install the firebox. This will
save time and money later when you install the fire
box. Before installation, consider the following:
1. Where the firebox will be located. Allow for
wall and ceiling clearances (see
Clearances, page 9).
Installation
PRODUCT SPECIFICATIONS
32" MODELS
Left Side
View with
Air Kit
2. Everything needed to complete installation.
3. These models CANNOT be installed in a
bedroom unless the maximum Btu rating
of the installed vent-free log set is less than
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10,000 Btu/hr.
4. Proper air for combustion and ventilation
(page 7).
Outside Air
Kit Location
(Optional)
Firebox Top View
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Front View
Right Side
View
Figure 1 - Firebox Dimensions (32" Models)
115254-01A5
PRODUCT SPECIFICATIONS
Continued
36" AND 42" MODELS
Note: If only one dimension is shown, the dimension is the same for both 36" and 42" models.
Firebox Top View
Left Side
View with
Air Kit
Outside Air
Kit Location
(Optional)
Right
Side
View
6
Front View
Figure 2 - Firebox Dimensions (36" and 42" Models)
www.desatech.com
115254-01A
AIR FOR COMBUSTION
AND VENTILATION
WARNING: This firebox shall
not be installed in a confined
space or unusually tight construction unless provisions are
provided for adequate combustion and ventilation air. Read the
following instructions to insure
proper fresh air for this and
other fuel-burning appliances
in your home.
Todayʼs homes are built more energy efficient
than ever. New materials, increased insulation and
new construction methods help reduce heat loss
in homes. Home owners weather strip and caulk
around windows and doors to keep the cold air out
and the warm air in. During heating months, home
owners want their homes as airtight as possible.
While it is good to make your home energy effi
cient, your home needs to breathe. Fresh air must
enter your home. All fuel-burning appliances need
fresh air for proper combustion and ventilation.
Exhaust fans, fireboxes, clothes dryers and fuel
burning appliances draw air from the house to
operate. You must provide adequate fresh air for
these appliances. This will insure proper venting
of vented fuel-burning appliances.
PROVIDING ADEQUATE
VENTILATION
The following are excerpts from National Fuel Gas
Code, ANSI Z223.1/NFPA 54, Section 5.3, Air for
Combustion and Ventilation.
All spaces in homes fall into one of the three fol
lowing ventilation classifications:
1. Unusually Tight Construction
2. Unconfined Space
3. Confined Space
The information on page 7 through 9 will help
you classify your space and provide adequate
ventilation.
Unusually Tight Construction
The air that leaks around doors and windows
may provide enough fresh air for combustion and
ventilation. However, in buildings of unusually
tight construction, you must provide additional
fresh air.
Unusually tight construction is defined as
construction where:
a. walls and ceilings exposed to the out
side atmosphere have a continuous
water vapor retarder with a rating of
one perm (6 x 10
less with openings gasketed or sealed
and
b. weather stripping has been added on
openable windows and doors
c. caulking or sealants are applied to
areas such as joints around window
and door frames, between sole plates
and floors, between wall-ceiling joints,
between wall panels, at penetrations
for plumbing, electrical and gas lines
and at other openings.
If your home meets all of the three criteria
above, you must provide additional fresh
air. See Ventilation Air From Outdoors
page 9.
If your home does not meet all of the
criteria above, proceed to Determin ing
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Fresh-Air Flow for Firebox Location.
Confined and Unconfined Space
The National Fuel Gas Code, ANSI Z223.1/NFPA
54 defines a confined space as a space whose
volume is less than 50 cubic feet per 1,000 Btu
per hour (4.8 m
rating of all appliances installed in that space and
an unconfined space as a space whose volume is
not less than 50 cubic feet per 1,000 Btu per hour
3
(4.8 m
per kw) of the aggregate input rating of
all appliances installed in that space. Rooms com
municating directly with the space in which the
appliances are installed*, through openings not
furnished with doors, are considered a part of the
unconfined space.
* Adjoining rooms are communicating only if
there are doorless passageways or ventilation grills
between them.
-11
kg per pa-sec-m2) or
3
per kw) of the aggregate input
DETERMINING FRESH-AIR FLOW
FOR HEATER LOCATION
Determining if You Have a Confined or
Unconfined Space
Use this work sheet to determine if you have a
confined or unconfined space.
Space: Includes the room in which you will
install heater plus any adjoining rooms with door
less passageways or ventilation grills between
the rooms.
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and
,
three
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115254-01A7
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Or
Remove
Door into
Adjoining
Room,
Option
3
Ventilation Grills
Into Adjoining Room,
Option
2
Ve
ntilation
Grills
Into
Adjoining
Room,
Option 1
12"
12"
AIR FOR COMBUSTION
AND VENTILATION
Continued
1. Determine the volume of the space (length x
width x height).
Length x Width x Height = ________ cu . ft.
(volume of space)
Example: Space size 22 ft. (length) x 18 ft.
(width) x 8 ft. (ceiling height) = 3168 cu. ft.
(volume of space)
If additional ventilation to adjoining room is
supplied with grills or openings, add the volume
of these rooms to the total volume of the space.
2. Multiply the space volume by 20 to determine
the maximum Btu/Hr the space can support.
_______(volume of space) x 20 = (Maximum
Btu/Hr the space can support)
Example: 3168 cu. ft. (volume of space) x 20 =
63,360 (maximum Btu/Hr the space can support)
3. Add the Btu/Hr of all fuel burning appliances
in the space.
Vent-free heater
Gas water heater*
Gas furnace
Vented gas heater
Gas fireplace logs
Other gas appliances* + ________
Total = ________
* Do not include direct-vent gas appliances.
Direct-vent draws combustion air from the
outdoors and vents to the outdoors.
Example:
Gas water heater
Vent-free heater + ________
Total = ________
4. Compare the maximum Btu/Hr the space can
support with the actual amount of Btu/Hr used.
__________ Btu/Hr (maximum the space
can support)
__________ Btu/Hr (actual amount of
Btu/Hr used)
Example: 63,360 Btu/Hr (maximum
the space can support)
79,000 Btu/Hr (actual amount
of Btu/Hr used)
The space in the above example is a confined
space because the actual Btu/Hr used is more than
the maximum Btu/Hr the space can support. You
must provide additional fresh air. Your options
are as follows:
8
__________ Btu/Hr
__________ Btu/Hr
__________ Btu/Hr
__________ Btu/Hr
__________ Btu/Hr
Btu/Hr
Btu/Hr
40,000
__________ Btu/Hr
39,000
79,000
Btu/Hr
Btu/Hr
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A. Rework worksheet, adding the space of an
adjoining room. If the extra space provides an
unconfined space, remove door to adjoining
room or add ventilation grills between rooms.
See Ventilation Air From Inside Building
B. Vent room directly to the outdoors. See Ven
tilation Air From Outdoors, page 9.
C. Install a lower Btu/Hr heater, if lower Btu/Hr
size makes room unconfined.
If the actual Btu/Hr used is less than the maximum
Btu/Hr the space can support, the space is an un
confined space. You will need no additional fresh
air ventilation.
WARNING: If the area in which
the heater may be operated is
smaller than that defined as an
unconfined space or if the building
is of unusually tight construction,
provide adequate combustion and
ventilation air by one of the methods
described in the National Fuel Gas
Code, ANSI Z223.1/NFPA 54 Section
5.3 or applicable local codes.
VENTILATION AIR
Ventilation Air From Inside Building
This fresh air would come from an adjoining un
confined space. When ventilating to an adjoining
unconfined space, you must provide two perma
nent openings: one within 12" of the ceiling and
one within 12" of the floor on the wall connecting
the two spaces (see options 1 and 2, Figure 4). You
can also remove door into adjoining room (see
option 3, Figure 3). Follow the National Fuel Gas
Code, ANSI Z223.1/NFPA 54, Section 5.3, Air for
Combustion and Ventilation for required size of
ventilation grills or ducts.
Figure 3 - Ventilation Air from Inside
Building
115254-01A
.
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-
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Outlet
Air
Ve
ntilated
Attic
Outlet
A
ir
Inlet
Air
Inlet Air
Ve
ntilated
Crawl Space
To
Crawl
Space
To Attic
AIR FOR COMBUSTION
AND VENTILATION
Continued
Ventilation Air From Outdoors
Provide extra fresh air by using ventilation grills or
ducts. You must provide two permanent openings:
one within 12" of the ceiling and one within 12"
of the floor. Connect these items directly to the
outdoors or spaces open to the outdoors. These
spaces include attics and crawl spaces. Follow the
National Fuel Gas Code, ANSI Z223.1/NFPA 54,
Section 5.3, Air for Combustion and Ventilation for
required size of ventilation grills or ducts.
IMPORTANT: Do not provide openings for inlet
or outlet air into attic if attic has a thermostatcontrolled power vent. Heated air entering the attic
will activate the power vent.
Figure 4 - Ventilation Air from Outdoors
INSTALLATION
WARNING: A qualified service person must install firebox.
Follow all local codes.
WARNING: Never install the
firebox
• in a bedroom or bathroom*
• in a recreational vehicle
• where curtains, furniture,
clothing or other flammable
objects are less than 42 inches
from the front, top or sides of
the firebox
• in high traffic areas
• in windy or drafty areas
* Unless the installed log set is
rated at 10,000 Btu/Hr or less.
115254-01A9
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CAUTION: Log heaters installed in this firebox create warm
air currents. These currents move
heat to wall surfaces next to firebox. Installing firebox next to vinyl
or cloth wall coverings or operating firebox where impurities (such
as, but not limited to, tobacco
smoke, aromatic candles, cleaning fluids, oil or kerosene lamps,
etc.) in the air exist, may discolor
walls or cause odors.
IMPORTANT: Vent-free gas log heaters add moisture to the air. Although this is beneficial, installing
firebox in rooms without enough ventilation air may
cause mildew to form from too much moisture. See
Air for Combustion and Ventilation, page 7.
IMPORTANT: Make sure the firebox is level. If
firebox is not level, log set will not work properly.
Note: Your firebox is designed to be used in zero
clearance installations. Wall or framing material
can be placed against any exterior surface on the
rear, sides, top or bottom of your firebox, except
where standoff spacers are integrally attached. If
standoff spacers are attached to your firebox, these
spacers can be placed directly against wall or fram
ing materials. Use the dimensions shown for rough
opening to create the easiest installation.
Use dimensions shown for rough openings to
create the easiest installation (see Built-In Firebox Installation, page 11).
INSTALLATION CLEARANCES
WARNING: Maintain the
minimum clearances. If you can,
provide greater clearances from
floor, ceiling and adjoining wall.
Carefully follow these instructions. This will
ensure safe installation.
Minimum Wall and Ceiling Clearances (see
Figure 5, page 10)
A. Clearances from the side of the fireplace
cabinet to any combustible material and wall
should follow diagram in Figure 5, page 10.
Example: The face of a mantel, bookshelf,
etc. is made of combustible material and
protrudes 3 1/2" from the wall. This combustible material must be 4" from the side of the
fireplace cabinet (see Figure 5, page 10).
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INSTALLATION
Supplied Firebox
Hood Must Be
Used at All Times
Wire-mesh
Screen
Firebox
Noncombustible
Material May
Project Off this
Surface above
the Firebox Hood
Mantel Shelf
Note: Any portion of the
mantel shelf must NOT
extend beyond this profile.
12"
16"
20"
1
1
/2
"
6
3
/4
"
12"
Note: All vertical
measurements are
from top of fireplace
hood opening to
bottom of mantel shelf.
These minimum
clearances replace any
other recommended
clearances supplied with
your ANSI Z21.11.2
approved gas logs.
Wa
ll board or facing
material (above
firebox) may be of
combustible material,
including decorative
mantel ornaments or
other similar projections off of the facing
material.
Framing
Material
Continued
B. Clearances from the top of the firebox opening to
the ceiling should not be less than 42 inches.
C. When the firebox is installed on carpeting or
other combustible material, other than wood
flooring, the firebox should be installed on a
metal or wood panel extending the full width
and depth of the enclosure.
D. Clearances from the bottom of firebox to the
floor is 0 inches.
These fireboxes can be installed as freestanding
units against a wall with the approved, optional
cabinet mantels (see
built-in unit. The clearances are the same for either
installation method.
CAUTION: Do not install
the firebox directly on carpet
or vinyl.
Accessories, page 35) or as a
Example
NOTICE: Surface temperatures
of adjacent walls and mantels become hot during operation. Walls
and mantels above the firebox
may become hot to the touch.
If installed properly, these temperatures meet the requirement
of the national product standard.
Follow all minimum clearances
shown in this manual.
NOTICE: If your installation does
not meet the minimum clearances
shown, you must do one of the
following:
• raise the mantel to an acceptable height
• remove the mantel
*Minimum 16 inches from Side Wall
Figure 5 - Minimum Clearance for
Combustible to Wall
Mantel Clearances for Built-In Installation
If placing custom mantel above built-in firebox,
you must meet the minimum allowable clearance
between mantel shelf and top of firebox opening
shown in Figure 6. These are the minimum allow
able mantel clearances for a safe installation. Use
larger clearances wherever possible to minimize
the heating of objects and materials placed on
the mantel.
CAUTION: Do not allow
the vent-free gas log heater
to touch or extend beyond the
fireplace screen.
10
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*
Figure 6 - Minimum Mantel Clearances
for Built-In Installation
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BUILT-IN FIREBOX INSTALLATION
Built-in installation of this firebox involves installing firebox into a framed-in enclosure. This makes
the front of firebox flush with wall. Optional brass
trim accessories are available (see Accessories,
page 35). The brass trim will extend past sides of
firebox approximately 1/2 inch. This will cover
the rough edges of the wall opening. If installing
a mantel above the firebox, you must follow the
clearances shown in Figure 6. Follow these instructions to install the firebox in this manner.
115254-01A
INSTALLATION
Depth
(Minimum)
Widt
h
(Inside to Inside)
Height
37"
411/2"
5
2
11
/
32
"
74"
TOP
VIEW
FOR 36"
MODELS
30"
347/8"
42
7
/
16
"
60"
TOP VIEW
FOR 32"
MODELS
43"
485/8"
6
0
13
/
1
6
"
86"
TOP
VIEW
FOR 42"
MODELS
Continued
1. Frame in rough opening. The firebox framing should be constructed of 2 x 4 lumber or
heavier. Use dimensions in Table 1 and rough
opening layout in Figure 7a. Adjust framing so
that firebox flushes with finished wall surface. If
installing in a corner, use dimensions in Figures
7b, 7c and 7d for rough opening.
2. Install gas piping to firebox location (see
Connecting to Gas Supply, page 16.) IM
PORTANT:
(circulating models with louvers only), see
Hard-Wiring Firebox,
3. Carefully set firebox in front of rough open
ing with back of firebox inside wall opening.
IMPORTANT: If installing a perimeter trim kit,
see instructions included with trim accessory. You
must install shoulder screws from trim kit now.
4. Carefully insert firebox into rough opening.
5. Attach firebox to wall studs using nails or
wood screws through holes in nailing flange
(see Figure 8).
6. If using an optional perimeter trim kit, install
the trim after final finishing and/or painting
of wall. See instructions included with trim
accessory for attaching trim.
7. Install and properly test gas log heater. Follow
installation instructions included with the ventfree gas log heater that is being installed.
IMPORTANT:
tible materials such as wall board, gypsum board, sheet
rock, drywall, plywood, etc. may be butted up next to
the sides and top of the firebox. Combustible materials
should never overlap the firebox front facing.
If installing blower accessory
page 15.
When finishing your firebox, combus-
WARNING: Do not allow
noncombustible materials to
cover any necessary openings
like louvered slots.
WARNING: Use only noncombustible mortar or adhesives when overlapping the front
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facing with noncombustible
facing material.
-
Figure 7a
Figure 7b
Figure 7c
WARNING: Do not allow any
combustible materials to overlap
the firebox front facing.
IMPORTANT: Noncombustible materials such as
brick, tile, etc. may overlap the front facing, but
should never cover any necessary openings like
louvered slots.
Table 1
Rough Opening Dimensions for
Built-in Installation
Front Width Depth
Model (Inside to Inside) Height (Min.)
32" 34 7/8" 36 3/4" 16 1/4"
1
36" 41
42" 48
115254-01A11
/2" 40 1/2" 20 3/4"
5
/8" 44 1/2" 22 5/8"
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Figure 7 - Rough Opening for Installing
in Wall
Nails or Wood
Screws
Nailing
Flanges
Figure 8 - Attaching Firebox to Wall Studs
Figure 7d
INSTALLATION
Continued
INSTALLING FIREBOX USING
OPTIONAL ACCESSORY MANTELS
WARNING: A qualified service person must install firebox.
Follow all local codes.
This firebox may be installed using a cabinet
mantel accessory against a wall in your home.
The firebox and cabinet mantel can be installed
directly on the floor. A trim kit is included with
the mantel accessories.
1. Assemble cabinet mantel accessory and the
trim kit. Assembly instructions are included
with each accessory.
2. If using an optional blower accessory (circulat
ing models only), install a properly grounded,
120 volt three-prong electrical outlet at firebox
location if an outlet is not there. If possible,
locate outlet so cabinet mantel will cover it
when installed (see Figure 9).
3. Install gas piping to firebox location. See
Connecting to Gas Supply, page 15. You may
have to cut an access hole in the floor or wall
to run gas line to firebox. Make sure to locate
access hole so cabinet mantel will cover it
when installed (see Figure 9).
4. Place cabinet mantel on floor in desired loca
tion. Make sure mantel is flush against wall.
5. Break off nailing flanges with hammer or pliers
(32" models only, see Figure 10).
6. Install the trim kit furnished with mantel. See instruction sheet included with the mantel now.
7. If installing an optional blower accessory (cir
culating models only), see Installing Optional Blower Accessories, page 13.
8. Carefully insert firebox into cabinet mantel. Be
careful not to scratch firebox, cabinet mantel,
flooring, etc. when installing (see Figure 11).
9. Install and properly test gas log heater. Follow
installation instructions included with the ventfree gas log heater that is being installed.
-
Nailing
Flanges
Figure 10 - Location of Nailing Flanges
(Two on Each Side), 32" Model Shown
(Model May Vary From Illustration)
-
-
Cabinet
Mantel
Gas Line Access Hole
(Either Side of Firebox)
Figure 9 - Installing Cabinet Mantel
12
Gas Piping
Electrical
Outlet
www.desatech.com
Figure 11 - Inserting Firebox Into
Cabinet Mantel (Model May Vary From
Illustration)
115254-01A
INSTALLATION
Continued
INSTALLING OPTIONAL BLOWER
ACCESSORIES
NOTICE: The firebox identification label (including model number, serial number, clearances,
etc.) is located in the right side
screen pocket area on the front
of the firebox. See Figure 25,
page 15.
Lower
Louver
Panel
NOTICE: If a log set is installed
in the firebox, disconnect log
set from gas supply and remove
from firebox. Contact a qualified
service person to do this.
Note: Appearance of firebox may vary depending
on model.
The blower accessory option for use in the ventfree fireboxes is model BK. Model BK is a rotary
squirrel cage type blower with magnetic attach
ment and variable speed control.
The blower is installed by removing the lower face
panel. To remove the lower face panel, pull the left
and right latches toward the center of the appliance
until they are disengaged from their locator holes
(see Figure 12).
Models with louvered front panels can also be
removed by inserting fingertips between slots
and gently pulling out. DO NOT FORCE. The
panels are actually held in place by means of a
retention dimple embossed on the edge of remov
able panels.
WARNING: If there is a duplex
electrical outlet installed in the
right side of the bottom of the
fireplace base area (see Figure
13), be sure that the electrical
power to the outlet is turned off
before proceeding with blower
installation. Failure to do this
may result in serious injury.
1. Attach the power cord to the blower motor by
firmly pushing the two female terminals at the
end of the power cord onto the two spade terminals on the blower motor (see Figure 14).
Figure 12 - Accessing Blower
Compartment (Controls Not Shown
-
Figure 13 - Accessing Duplex Electrical
Outlet Installed in Bottom Right Side of
-
Spade
Terminals
Green
Ground
Wire
Blower
Installed
After
Lower
Panel
Removed
Figure 14 - Blower Model BK
for Clarity)
Duplex Electrical Outlet
Firebox
Magnetic Strips
Exhaust
Port
Screw
Side View
Firebox Bottom
Blower
Location
Air Flow
Direction
Magnets
115254-01A13
www.desatech.com
INSTALLATION
Red
Va
riable
Fan Switch
Fan Switch
(N.O.)
Green
White
On
11
0/115
V.
A.C.
Blower
Motor
Black
Off
1
2
Black
Blue
Continued
2. Attach green ground wire from power cord
to blower housing using screw provided (see
Figure 14, page 13). Tighten screws securely
with a phillips screwdriver.
3. Place the blower against the lower rear wall of
the firebox outer wrapper with the exhaust port
directed upward. Depending on your model,
you may have to carefully route the blower
assembly past the controls and brackets and
position the blower inside the back opening.
The blower will be held in position against the
back wall by the magnets incorporated onto
the blower housing (see Figure 14, page 13).
4. Be certain that all wire terminals are securely at
tached to terminals on blower motor and that the
screw retaining the green ground wire is tight.
5. Mount speed control box by placing plastic con
trol shaft through bottom hole on speed control
bracket. Top screw head on control box will fit
inside top hole on bracket (see Figure 15). Secure
speed control to bracket with lock nut by pushing
and turning lock nut with pliers clockwise until
it is tight against bracket.
6. Place control knob, provided, onto control
shaft (see Figure 15).
7. Check to make sure power cord is completely
clear of blower wheel and there are no foreign
objects in blower wheel. Also, double check
all wire leads and make sure wire routing is
not pinched or in a precarious position. Cor
rect accordingly.
CAUTION: Never touch the
blower wheel while in operation.
8. Turn on power to duplex outlet if previously
turned off per warning on page 13.
9. Plug in blower power cord to duplex outlet
(see Figure 15, page 13).
10. Turn blower on and check for operation. Turn
blower off by turning knob fully counterclock
wise before continuing.
11. Peel off backing paper and stick supplied wiring
diagram decal on firebox bottom approximately
12" in from of blower (see Figure 16).
12. Replace all panels and/or brick bottom panel
if previously removed.
-
-
(BKT Model
Only)
-
-
Speed
Control
Control
Shaft
Locknut
Duplex Outlet
(Located under
firebox floor
against lower
Control Knob
Figure 15 - Attaching Speed Control to
14
Firebox with Panel Louvers
right outside wall)
Blower
Plug-In
Wiring Diagram
Decal 12" in
Front of Blower
Figure 16 - Location of Wiring Diagram
Decal (Model May Vary From Illustration)
www.desatech.com
115254-01A
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