®
UNVENTED (VENT-FREE) 32” LogMate® UNIVERSAL FireBOX
OWNER’S MANUAL
Shown with optional cabinet
mantel, hearth base, brass trim,
and marble trim accessories.
FB32CA (SHOWN) AND NLFB32C CIRCULATING
LOUVERED;
FB32NCA AND NLFB32NC NONCIRCULATING SMOOTH
FACE MODELS
WARNING: If the information in this manual is not fol-
lowed exactly, a fire or explosion may result causing
property damage, personal injury, or loss of life.
WARNING:Foruseonlywithalistedgas-firedunvented
decorative room heater. Not to exceed 40,000 Btu/Hr.
Do not build a wood fire.
Carefully review the instructions supplied with the
decorativetypeunventedroomheaterfortheminimum
fireplace size requirement.
Do not install an appliance in this firebox unless this
firebox meets the minimum dimensions required for
the installation.
This firebox has been tested and approved by CSA
under ANSI Z21.91 for use with any ANSI Z21.11.2 ap-
proved gas logs.
Save this manual for future reference.
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SAFETY INFORMATION
Do not place clothing or other
flammable material on or near
firebox.Neverplaceanyobjects
on the firebox or logs.
WARNING:Thisproductcon-
tainsand/orgenerateschemicals
knowntotheStateofCaliforniato
cause cancer or birth defects, or
other reproductive harm.
Carefully supervise young chil-
dren when they are in the room
with firebox.
IMPORTANT: Read this owner’s
manual carefully and completely
beforetryingtoassemble,operate,
or service this firebox. Improper
useofthisfireboxcancauseseri-
ous injury or deatah from burns,
fire,explosion,electricalshock,or
carbon monoxide poisoning.
Fireboxfrontandscreenbecome
very hot when running firebox.
Keep children and adults away
fromhotsurfacestoavoidburns
or clothing ignition. Firebox will
remain hot for a time after shut-
down. Allow surfaces to cool
before touching.
WARNING: Any change to
this firebox or its controls can
be dangerous.
You must operate this fireplace
with the provided fireplace
screen (closed) and hood in
place.Makesurethesepartsare
in place before running firebox.
Thisfireboxhasbeentestedand
approved with and without the
brickliner.Ifthelinerisremoved,
the model number reverts to the
NL (non-lined) series.
WARNING: Do not allow fans
to blow directly into the firebox.
Avoid any drafts that alter burner
flame patterns. Ceiling fans can
createdraftsthatalterburnerflame
patterns. Altered burner patterns
can cause sooting.
Keep the firebox area clear and
freefromcombustiblematerials,
gasoline, and other flammable
vapors and liquids.
WARNING:Donotuseablow-
er insert, hood, heat exchanger
insert,orotheraccessorynotap-
proved for use with this heater.
Do not use blower accessory
with Models NLFB32NC and
FB32NCA.Useonlytheprovided
hood or GA6096 polished brass
hood accessory (see Accesso-
ries on page 16).
1. This firebox shall not be installed in a bedroom
or bathroom.
2. Never install the firebox
•
•
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
•
•
Due to high temperatures, the
firebox should be located out of
traffic and away from furniture
and draperies.
in windy or drafty areas
3. Do not use this firebox as a wood-burning
fireplace. Use only decorative unvented room
heaters (log sets).
4. Do not add extra logs or ornaments such as pine
cones, vermiculite, or rock wool. Using these
added items can cause sooting.
105604-01H
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2. Check carton contents for the following:
SAFETY INFORMATION
•
•
•
•
Screen assembly (2)
Screen support rod (2)
Hood
Continued
5. Vent-free gas log heaters installed in these
fireboxes require fresh air ventilation to run
properly. See Air for Combustion and Ventila-
tion, page 6.
Hardware and parts bag containing the
following:
•
Ownerʼs Operation and Installation
Manual
6. Do not run firebox
•
where flammable liquids or vapors are used
or stored
under dusty conditions
•
•
2 - Black #10 x 3/8” Phillips screws
3 - Zinc #10 x 1/2” shouldered hex
screws
•
7. Do not use this firebox to cook food or burn
paper or other objects.
•
2 - Black #10 x 5/8” shouldered hex
screws
8. Turn firebox off and let cool before servicing.
Only a qualified service person should service
and repair firebox.
If any items are missing, inform dealer where
you bought the firebox.
3. Check all items for any shipping damage. If
damaged, promptly inform dealer where you
bought firebox.
9. Operating vent-free log sets in a firebox
above elevations of 4,500 feet could cause
pilot outage.
10. Do not use the firebox if it has been under
water due to the shock hazard that could
result with the blower accessary (if installed)
in place.
PRODUCT
SPECIFICATIONS
Standoffs (Models
Built-in Nailing
FB32NCA and
11. Provide adequate clearances around air
openings.
Flanges
NLFB32NC only)
351/16
"
LOCAL CODES
37/8"
Install and use fireplace with care. Follow all local
codes. Intheabsenceoflocalcodes, usethelatestedi-
tion of The National Fuel Gas Code ANSI Z223.1/
NFPA 54*. Firebox must be electrically grounded
in accordance with the National Electrical Code,
ANSI/NFPA70 (latest edition).
23/4"
11/4"
193/8"
161/4"
*Available from:
313/4"
American National Standards Institute, Inc.
1430 Broadway
New York, NY 10018
National Fire Protection Association, Inc.
23/4"
63/8"
63/4
"
Batterymarch Park
Quincy, MA 02269
Louvers (Models FB32CA
and NLFB32C only)
UNPACKING
1. With utility knife, cut the carton all the way
around above the staples on the bottom tray.
Lift the carton off the firebox. Remove pack-
ing. Note: The hood is located in the packing
on the right hand side of the heater front. Lift
the heater off the bottom tray.
Figure 1 - Firebox Front View
4
105604-01H
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PRODUCT
PRODUCT FEATURES
OPERATION
SPECIFICATIONS
Continued
This firebox is designed for use with approved
ANSI Z21.1.2 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 installation easy and inexpensive. When
used without the blower (models FB32CA and
NLFB32C only), the firebox requires no electricity
making it ideal for emergency backup heat.
Standoffs (Models FB32NCA
and NLFB32NC only)
23/4"
11/2"
6"
BLOWER ACCESSORY
The FB32CA and NLFB32C firebox will accept
the GA3700 accessory. The variable blower allows
you to select the fan speed you desire. The blower
circulates heated air from the firebox into the room.
Use of blower is optional.
3311
"
16
/
323/16
"
121/2"
93/4"
LOCATING FIREBOX
45/8"
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:
21/2
1. Where the firebox will be located. Allow for
wall and ceiling clearances (see Installation
Clearances, page 9).
Electrical
Access Hole
Electrical
Access Hole
with Bushing
Gas Line
Access
2. Everything needed to complete installation.
Figure 2 - Firebox Side View
3. These models CANNOT be installed in a
bedroom or bathroom.
221/2"
4. Proper air for combustion and ventilation (see
page 6).
1611
191/4"
/
16
"
131/4" 141/4"
*
*
315/8"
343/8"
355/8"
1
4
*Note: 14 / " is total firebox cavity depth
1
4
including brick liner. 13 / " is depth of flat
floor including brick liner.
Figure 3 - Firebox Top View
105604-01H
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Unusually tight construction is defined as
construction where:
AIR FOR COMBUSTION
AND VENTILATION
a. walls and ceilings exposed to the out-
side atmosphere have a continuous
water vapor retarder with a rating of
one perm (6x10-11 kg per pa-sec-m2) or
less with openings gasketed or sealed
and
WARNING: This firebox shall
not be installed in a confined
spaceorunusuallytightconstruc-
tionunlessprovisionsareprovid-
ed for adequate combustion and
ventilation air. Read the following
instructionstoinsureproperfresh
air for this and other fuel-burning
appliances in your home.
b. weather stripping has been added on
openable windows and doors and
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.
Todayʼs homes are built more energy efficient
than ever. New materials, increased insulation, and
new construction methods help reduce heat loss in
homes.Homeownersweatherstripandcaulkaround
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.
If your home meets all of the three criteria
above, you must provide additional fresh
air. See Ventilation Air From Outdoors,
page 8.
If your home does not meet all of the
three criteria above, proceed to Determin-
ing Fresh-Air Flow For Firebox Location,
page 7.
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.
Confined Space 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 m3 per kw) of the aggregate input
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
(4.8 m3 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.
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
* Adjoining rooms are communicating only if
there are doorless passageways or ventilation grills
between them.
3. Confined Space
The information on pages 6 through 8 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 ventila-
tion. However, in buildings of unusually tight con-
struction, you must provide additional fresh air.
6
105604-01H
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4. Compare the maximum Btu/Hr the space can
support with the actual amount of Btu/Hr used.
AIR FOR COMBUSTION
AND VENTILATION
_______Btu/Hr (maximum the space
can support)
Continued
DETERMINING FRESH-AIR FLOW
FOR HEATER LOCATION
________Btu/Hr (actual amount of
Btu/Hr used)
Determining if You Have a Confined or
Unconfined Space
Use this work sheet to determine if you have a
Example: 51,200 Btu/Hr (maximum the
space can support)
79,000 Btu/Hr (actual amount of
Btu/Hr used)
confined or unconfined space.
Space: Includes the room in which you will install
heater plus any adjoining rooms with doorless
passageways or ventilation grills between the
rooms.
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:
1. Determine the volume of the space (length x
width x height).
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
Length x Width x Height =__________ cu. ft.
(volume of space)
Example: Space size 20 ft. (length) x 16 ft.
(width) x 8 ft. (ceiling height) = 2560 cu. ft.
(volume of space)
Ventilation Air From Inside Building, page 8
.
B. Vent room directly to the outdoors. See Ven-
tilation Air From Outdoors, page 8.
Ifadditionalventilationtoadjoiningroomissup-
plied with grills or openings, add the volume of
these rooms to the total volume of the space.
C. Install a lower Btu/Hr heater, if lower Btu/Hr size
makes room unconfined.
2. Multiply the space volume by 20 to determine
the maximum Btu/Hr the space can support.
If the actual Btu/Hr used is less than the maxi-
mum Btu/Hr the space can support, the space is
an unconfined space. You will need no additional
fresh air ventilation.
____________ (volume of space) x 20 =
(Maximum Btu/Hr the space can support)
Example: 2560 cu. ft. (volume of space) x 20 =
51,200 (maximum Btu/Hr the space can support)
WARNING: If the area in
which the firebox and gas log
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
byoneofthemethodsdescribed
in the National Fuel Gas Code,
ANSIZ223.1/NFPA54Section5.3
or applicable local codes.
3. Add the Btu/Hr of all fuel burning appliances
in the space.
Vent-free heater
Gas water heater*
Gas furnace
________ Btu/Hr
________ Btu/Hr
________ Btu/Hr
________ Btu/Hr
________ Btu/Hr
Vented gas heater
Gas fireplace logs
Other gas appliances* + ________ Btu/Hr
Total = ________ Btu/Hr
* Do not include direct-vent gas appliances.
Direct-vent draws combustion air from the
outdoors and vents to the outdoors.
Example:
40,000
________ Btu/Hr
39,000
Gas water heater
Vent-free heater
Total
+ ________ Btu/Hr
79,000
= ________ Btu/Hr
105604-01H
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IMPORTANT: Do not provide openings for inlet
or outlet air into attic if attic has a thermostat-
controlled power vent. Heated air entering the attic
will activate the power vent.
AIR FOR COMBUSTION
AND VENTILATION
Continued
VENTILATION AIR
INSTALLATION
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 4). 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.
NOTICE:Thisheaterisintended
for use as supplemental heat.
Use this heater along with your
primary heating system. Do not
install this heater as your pri-
mary heat source. If you have a
centralheatingsystem,youmay
run system’s circulating blower
whileusingheater.Thiswillhelp
circulatetheheatthroughoutthe
house. In the event of a power
outage, you can use this heater
as your primary heat source.
12"
Ventilation
Ventilation Grills
Into Adjoining Room,
Option 2
Grills
Into Adjoining
Room,
Or
Remove
Door into
Adjoining
Room,
Option
3
Option 1
WARNING: A qualified ser-
vicepersonmustinstallfirebox.
Follow all local codes.
12"
WARNING: Never install the
firebox
Figure 4 - Ventilation Air from Inside
Building
• in a bedroom or bathroom
• in a recreational vehicle
• where curtains, furniture,
clothing, or other flammable
objectsarelessthan42inches
from the front, top, or sides of
the firebox
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.
• in high traffic areas
• in windy or drafty areas
WARNING: Never install the
firebox
Ventilated
Outlet
Attic
Air
• in a bedroom or bathroom
• in a recreational vehicle
• where curtains, furniture,
clothing, or other flammable
objectsarelessthan42inches
from the front, top, or sides of
the firebox
Outlet
Air
To Attic
To
Crawl
Space
Inlet
Air
Ventilated
Inlet Air
Crawl Space
• in high traffic areas
Figure 5 - Ventilation Air from Outdoors
• in windy or drafty areas
8
105604-01H
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INSTALLATION
Continued
Example
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 6.
*
IMPORTANT: Make sure the firebox is level.
If firebox is not level, log set will not work
properly.
*Minimum 16 inches from Side Wall
Figure 6 - Minimum Clearance for
Combustible to Wall
Note: Your Vanguard firebox is designed to be
used in zero clearance installations. Wall or fram-
ing material can be placed directly against any
exterior surface on the rear, sides, or top of your
firebox, except where standoff spacers are inte-
grally attached. If standoff spacers are attached to
your firebox, these spacers can be placed directly
against wall or framing materials.
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 8. These are the minimum allowable
mantel clearances for a safe installation. Use larger
clearances wherever possible to minimize the heating
of objects and materials placed on the mantel.
Use the dimensions shown for rough openings to
create the easiest installation (see Built-In Firebox
Installation, page 14).
INSTALLATION CLEARANCES
CAUTION: Close screens
before operation of vent-free
gas log heater. Do not allow the
heatertotouchorextendbeyond
the fireplace screen.
WARNING: Maintain the
minimum clearances. If you can,
provide greater clearances from
floor, ceiling, and adjoining wall.
If your installation does not meet the minimum
clearances in Figure 8, you must:
Carefully follow the instructions below. This will
ensure safe installation.
•
raise the mantel to an acceptable height,
Minimum Clearances For Side Combustible
Material, Side Wall, and Ceiling
OR • remove the mantel.
Note: All vertical measurements
are from top of fireplace opening
to bottom of mantel shelf. All
measurementsare in inches.
A. Clearances from the side of the fireplace
cabinet to any combustible material and wall
should follow diagram in Figure 6.
For
FB32NCA
and
NLFB32NC
Series
noncirculating,
smooth face
models
Mantel Shelf
Facing material
Example: The face of a mantel, bookshelf,
etc. is made of combustible material and
10"
8"
(ab
o
v
e
fi
rebox)
may be of
1
2
protrudes 3 / " from the wall. This combus-
6"
2 1/2"
combustible
tible material must be 4" from the side of the
fireplace opening (see Figure 6).
material, including
decorative mantel
ornaments.
B. Clearances from the top of the fireplace opening
to the ceiling should not be less than 42 inches.
19" 20" 21" 22"
13" 16" 19" 21"
For
FB32CA
and
NLFB32C
Series
circulating,
louvered
models only
Firebox
MINIMUM CLEARANCE TO
COMBUSTIBLE MATERIALS
Wire-mesh
Screen
Top
Left and
Right Sides and Rear
16" 0"
Bottom
Supplied
Firebox Hood
Must Be Used
at All Times
42"
Figure 7 - Minimum Mantel Clearances
for Built-In Installation
105604-01H
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3. 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.
INSTALLATION
Continued
INSTALLING BLOWER ACCESSORY
(Model FB32CA only)
You may install blower accessory GA3700 with
conventional installation (below) or with built-in
installation (page 11) with models FB32CA and
NLFB32C only.
4. Locate the plastic hole plug installed in the
3/8" diameter opening in the lower right
side of the firebox front panel (see Figure 9).
Remove the plastic plug and discard.
5. Place speed control against inner wall of front
panel, pushing the plastic control shaft for-
ward through the opening (see Figure 10).
Conventional Installation of Blower
Accessory
6. While supporting speed control, secure control
shaft with lock nut by pushing and turning
lock nut with pliers clockwise until it is tight
against front panel. Place control knob pro-
vided on shaft (see Figure 10).
NOTICE: If a log set is currently
installedinthefirebox,disconnect
logsetfromgassupplyandremove
from firebox. Contact a qualified
service person to do this.
Lower Rear Wall
of Firebox
Wrapper
1. Remove the firebox bottom:
a. Remove the 4 screws that secure the bottom
of the firebox (see Figure 8).
Blower
b. Carefully raise and remove the firebox
bottom from the firebox.
WARNING:Ifthereisaduplex
electrical outlet installed in the
right side of the bottom of the
fireplace base area, be sure that
theelectricalpowertotheoutletis
turnedoffbeforeproceedingwith
blower installation. Failure to do
this may result in serious injury.
Screws
Floor
Supports
Exhaust
Port
Plastic
Hole Plug
Top
Mounting
Tab
2. Place the blower against lower rear wall of
firebox wrapper with the exhaust port directed
upward. Align the holes in top mounting tabs
of blower with holes in wall of wrapper (see
Figure 9). Using 2 screws provided, mount
blower and tighten screws securely.
Figure 9 - Mounting Blower to Firebox
Speed Control
Control Shaft
Lock Nut
Screws
Control Knob
Figure 10 - Attaching Speed Control
Figure 8 - Removing Screws from
Firebox Bottom
10
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INSTALLATION
NOTICE: A qualified electrician
mustconnectelectricalwiringto
duplex outlet for built-in instal-
lation. Follow all local codes. In
absence of local codes follow
The National Electrical Code
ANSI/NFPA 70.
Continued
7. Plug in blower power cord.
a. If your firebox is installed as a freestanding
unit, determine whether the power cord
will exit the left side or the right side of the
firebox. Install 1 plastic bushing provided
1
2
into the 1 / " hole in the floor support on
the exit side. Install the second plastic
Built-In Installation of Blower Accessory
1. Before replacing bottom of firebox, remove
screw holding duplex outlet to the support
bracket in the bottom of firebox. Remove
duplex outlet.
1
2
bushing provided into the 1 / " hole in the
outer casing through which the power cord
will exit (see Figure 11). Route power cord
through both plastic bushings and plug the
power cord into a 3-prong grounded wall
receptacle near the firebox.
2. Clamp electrical cable into firebox through
smallest hole in outer casing using strain relief
provided.
b. If your firebox installation is recessed
and/or pre-wired, see Built-In Installation
of Blower Accessory, column 2.
3. Route wires from electrical box through hole
in side of heater and hole in support bracket
(see Figure 12).
8. Turn on power to duplex outlet if previously
turned off per the warning in step 1.
4. Connect wires from the electrical box to
duplex outlet. Match wire colors to those
indicated on duplex outlet. Be sure to connect
ground wire.
9. Check to make sure that the power cord is com-
pletely clear of the blower wheel and that there
are no other foreign objects in blower wheel.
Turn blower on and check for operation.
5. Replace duplex outlet with screw.
6. Plug blower power cord into duplex outlet.
7. Replace bottom of firebox.
WARNING: Never touch the
blower wheel while in operation.
Cables From
10. Peel off the backing paper and stick the sup-
plied wiring diagram decal on the firebox
bottom approximately 12" in front of the
blower.
Electrical Source
Support Bracket
Blower
11. Replace bottom of firebox. Note: Make sure
the back of the firebox bottom slides under
the rear of the firebrick (lift the firebrick up if
necessary.)
12. Reattach firebox bottom using 4 screws re-
moved in step 1. Note: Discard the remaining
hardware items.
Duplex
Outlet
13. Install the log set heater according to the instal-
lation instructions supplied with the heater.
Screw
Blower
Power Cord
Figure 12 - Routing Blower Accessory
Power Cord for Built-In Installation
Plastic
Bushing
Operating the Blower
Light your gas appliance with the blower off.After
about 15 minutes, turn the blower on to deliver
heated air at the top louvers. The blower features
a variable control which allows you to select the
speed you desire.
Figure 11 - Installing Plastic Bushing for
Power Cord
Note: Periodically check the louvers of the firebox
and remove any dust, dirt, or other obstructions.
105604-01H
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Heater Base
INSTALLATION
Continued
Screws
INSTALLING LOG HEATER IN
FIREBOX
Mounting
Bracket
CAUTION:Donotremovethe
dataplatesattachedtotheheater
base assembly. The data plates
contain important warranty and
safety information.
Cut to
7 1/4"
Length
Firebox
Bottom
CAUTION:Donotpickuplog
base assembly by burners. This
could damage burners. Only
handle base by grates.
Figure 14 - Cutting Brackets
INSTALLING FIREPLACE HOOD
1. Remove four screws holding firebox bottom
in place.
NOTICE: The firebox canopy
(hood) must not be modified or
replacedwithacanopy(hood)that
maybeprovidedwiththeunvented
decorative room heater.
2. Lift and remove firebox bottom (see Figure 13).
3. If installing GA3700 Blower Accessory
(Models FB32CA and NLFB32C only), see
Installing Blower Accessory, page 10.
4. Route flexible gas line from manual shutoff
valve into firebox through side.
1. Attach three zinc-colored shoulder screws to
back of hood.
2. Insert hood into hood-mounting slots on
firebox.
NOTICE: Most building codes
do not permit concealed gas
connections. A flexible gas line
is recommended to allow ac-
cessibility from the firebox. The
flexible gas supply line connec-
tion to the manual shutoff valve
should be accessible.
3. Hold hood in place. Insert two black Phillips
screws through bottom of hood and tighten.
Hood
Hood
Mounting
Slot
5. Install and properly test gas log heater. Follow
installation instructions included with the vent-
free gas log heater that is being installed.
Shoulder
Screw
6. Replace firebox bottom and secure with
screws.
Screw
Figure 15 - Installing Fireplace Hood
Screws
Figure 13 - Removing Firebox Bottom
12
105604-01H
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INSTALLATION
2. If using an optional GA3700 blower (FB32CA
and NLFB32C models only), install a properly
grounded, 120 volt three-prong electrical out-
let at firebox location if an outlet is not there.
If possible, locate outlet so cabinet mantel will
cover it when installed (see Figure 18).
Continued
INSTALLING FIREPLACE SCREEN
1. Insert each rod through nine rings located at
top of screen.
2. Insert first rod into rear hole in left side of
firebox. Fasten rod to rear hole near center of
firebox using black shoulder screw.
3. Install gas piping to firebox location. This instal-
lation includes an approved flexible gas line (if
allowed by local codes) and a manual shutoff
valve. The flexible gas line must be the last item
installed on the gas piping. See Connecting to
Gas Supply in your log set ownerʼs manual.
3. Insert other rod into front hole on right side of
firebox and fasten using remaining shoulder
screw.
Front and
Rear Hole
NOTICE:Aqualifiedserviceper-
sonmustconnectfireboxtogas
supply. Follow all local codes.
Screw
Rod
4. Place hearth base accessory against wall at instal-
lation location. Cut an access hole in hearth top
to run flexible gas line to firebox (see Figure 17).
Make sure to locate accesshole socabinet mantel
willcoveritwheninstalled. Note:You can secure
base to floor using wood screws. Countersink
screw heads and putty over.
Ring
Screen
5. Route flexible gas line through access hole in
hearth base.
Figure 16 - Installing Fireplace Screen
(Shown Without Fireplace Hood for
Clarity)
6. Center cabinet mantel on hearth base (see Figure
18). Make sure mantel is flush against wall.
Electrical
Outlet
Rigid Pipe and
Gas Shutoff
Valve
FIREBOX INSTALLATION USING
OPTIONAL ACCESSORY MANTELS
Gas Line
Access
Hole
Hearth
Base
This firebox may be installed using the corner or
cabinet mantel with hearth base accessories against
a wall in your home.You must use a GA6090 brass
trim kit included with the mantel accessories (see
Accessories, page 12). Follow the instructions
below to install the firebox in this manner.
Figure 17 - Placing Hearth Base
Accessory Against Wall
Note: The instructions below show installation
using GM100F/GM101U/GM102W/GM106F/
GM107U series cabinet mantels and the G3000F/
G3001U/G3004W/G3006F/G3007U series hearth
base accessories. The hearth base accessory shown
is optional for this installation. You can install
firebox and cabinet mantel directly on the floor.
The corner mantel cannot be installed with the
G3000F/G3001U/G3004W/G3006F/G3007U
series hearth base. You must install corner and
face mantels directly on the floor. If mounting
firebox and cabinet mantel to the floor or using
corner mantel, an optional G3005 Slim Base kit
may be installed.
Cabinet
Mantel
1. Assemble cabinet mantel, hearth base, brass
trim, and trim accessories. Assembly instruc-
tions are included with each accessory.
Figure 18 - Installing Cabinet Mantel
105604-01H
13
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INSTALLATION
Continued
7. Break off nailing flanges (see Figure 19) with
hammer or pliers.
IMPORTANT: When installing Brass Trim
Kit, see instructions included with mantel
accessory.
8. Place cardboard or other protective material
on top of hearth base. Carefully set firebox
on protective material, with back of firebox
inside mantel opening.
9. Attach flexible gas line to log set. See Con-
necting to Gas Supply in your log set ownerʼs
manual.
Figure 20 - Inserting Firebox Into
Cabinet Mantel
10. If installing GA3700 blower (FB32CA and
NLFB32C models only), route blower electri-
cal cord through bushing included with blower
accessory in right side firebox support and
bushing in side access opening of firebox.
Plug electrical cord into electrical outlet. See
Installing Blower Accessory, page 10.
BUILT-IN FIREBOX INSTALLATION
Built-in installation of this firebox involves install-
ing firebox into a framed-in enclosure. This makes
the front of firebox flush with wall. If installing
a mantel above the firebox, but you must follow
the clearances shown in Figure 7, page 7. Follow
the instructions below to install the firebox in
this manner.
11. Carefully insert firebox into cabinet mantel. Be
careful not to scratch or damage hearth base,
cabinet mantel, or any laminate trim on hearth
base. Remove protective material from top of
hearth base and from front of firebox (if any).
See Figure 20.
1. Frame in rough opening. Use dimensions
shown in Figure 21 for the rough opening. If
installing in a corner, use dimensions shown
in Figure 22 for the rough opening. The
height is 33" (FB32CA and NLFB32C) or
1
12. Install the trim after final finishing and/or
painting of wall. See instructions included with
mantel accessory for attaching brass trim.
4
34 / "(FB32NCAand NLFB32NC), which is
the same as the wall opening in Figure 21.
13. Check all gas connections for leaks. See
Checking Gas Connections in log set ownerʼs
manual.
17 3
/4"
33" (FB32CA and
NLFB32CA)
34 1
/4
"
(FB32NCA and
NLFB32NCA)
Nailing
Flanges
34 3
/4"
Figure 21 - Rough Opening for Installing
in Wall
3
39
/8
"
7
27
/8
"
3
34
55
/
4
"
Figure 19 - Location of Nailing Flanges
5
/
8
"
Figure 22 - Rough Opening for Installing
in Corner
14
105604-01H
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INSTALLATION
Height
Front Width
Continued
Model #
FB32CA
Actual Framing Actual Framing
3
3
3
16
8
4
32 / "
33"
33"
34 / " 34 / "
2. Install gas piping to firebox location. This
installation includes an approved flexible
gas line (if allowed by local codes) after the
manual shutoff valve. The flexible gas line
must be the last item installed on the gas pip-
ing. See Connecting to Gas Supply in log set
ownerʼs manual.
3
3
3
16
8
4
NLFB32C 32 / "
34 / " 34 / "
3
FB32NCA 33 /
341/4"
343/8" 34 / "
11
16
4
11
1
3
3
16
4
8
4
NLFB32NC 33 / " 34 / "
34 / " 34 / "
Depth
Model #
FB32CA
NLFB32C
Actual Framing
1611/16" 17 / "
1611/16" 17 / "
3
4
3. Carefully set firebox in front of rough open-
ing with back of firebox inside wall opening.
IMPORTANT: If installing Brass Trim Kit
GA6090, see instructions included with brass
trim accessory. You must install shoulder
screws now.
3
4
11
3
16
4
FB32NCA 16 / " 17 / "
11
3
16
4
NLFB32NC 16 / " 17 / "
REPLACEMENT PARTS
4. If using GA3700 blower accessory (Models
FB32CA and NLFB32C only), see Installing
Blower Accessory for built-in installation,
page 11.
Note: Use only original replacement parts. This
will protect your warranty coverage for parts
replaced under warranty.
PARTS UNDER WARRANTY
5. Attach flexible gas line to log set. See Con-
necting to Gas Supply in log set ownerʼs
manual.
Contact authorized dealers of this product. If
they canʼt supply original replacement part(s),
call DESA Heating Productsʼ Technical Service
Department at 1-866-672-6040.
6. Carefully insert firebox into rough opening.
7. Attach firebox to wall studs using nails or
wood screws through holes in nailing flange
(see Figure 23).
When calling DESA Heating Products, have
ready
•
•
•
•
•
•
your name
8. Check all gas connections for leaks. See
Checking Gas Connections in log set ownerʼs
manual.
your address
model and serial numbers of your firebox
how firebox was malfunctioning
type of gas used (propane/LP or natural gas)
purchase date
9. If using optional GA6090 brass trim kit, install
the trim after final finishing and/or painting of
wall. See instructions included with brass trim
accessory for attaching brass trim.
Usually, we will ask you to return the part to the
factory.
Nails or
Wood
Screws
PARTS NOT UNDER WARRANTY
Contact authorized dealers of this product. If they
canʼt supply original replacement part(s), call
DESA Heating Products at 1-866-672-6040 for
referral information.
When calling DESA Heating Products, have
ready
•
•
model number of your firebox
the replacement part number
TECHNICAL SERVICE
Nailing
Flanges
You may have further questions about installation,
operation, or troubleshooting. If so, contact DESA
Heating Productsʼ Technical Service Department
at 1-866-672-6040. When calling please have your
model and serial numbers of your heater ready.
Figure 23 - Attaching Firebox to Wall
Studs
You can also visit DESAHeating ProductsʼTechni-
105604-01H
15
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ACCESSORIES
Purchase these firebox accessories from your local dealer. If they can not supply these accessories, call
DESA Heating Productsʼ Sales Department at 1-866-672-6040 for information. You can also write to
the address listed on the back page of this manual.
EQUIPMENT SHUTOFF VALVE
GA5010
All models. Equipment shutoff valve with 1/8"
CABINET MANTEL
NPT tap.
GMC11F Series - Walnut Finished
GMC12U Series - Unfinished
GMC13F Series - Oak Veneer Finished
GM102W Series - Off White
All models. Shown with optional base and lami-
nate hearth and mantel trim accessories. Dimen-
3
3
4
sions (WxHxD): 56 /4" x 48" x 22 / "
BLOWER ACCESSORY - GA3700
Use with Models FB32CA and NLFB32C only.
The variable speed blower allows you to select
the desired speed. The blower circulates heated
air from the fireplace into the room.
CORNER MANTEL
GMC36F Series - Walnut Finished
GMC37U Series - Unfinished
GM202F Series - Oak Finished
GMC93F Series - Oak Finished with
Columns
CABINET MANTEL AND FULL
HEARTH BASE
GMC90F Series - Oak Finished
GMC91U Series - Unfinished Birch
GMC92F Series - Cherry Finished Birch
For all models. Mantel features columns, mold-
ings, fluting and medallion. Dimensions(WxHxD):
All models. Shown with optional laminate mantel
trim accessory.
7
3
5
8
Dimensions (WxHxD): 60 / " x 48 / " x 34 / "
4
8
HARDWOOD CORNER HEARTH
BASE - (Not Shown)
56" x 50" x 24
"
G3000F Series - Walnut Finished
G3009U Series - Unfinished
G3010F Series - Oak Finished
The corner hearth base creates a handsome riser
for the firebox (cannot be used with cabinet mantel
1
2
or face mantel).Dimensions (WxHxD): 52 / " x
1
2
6 / " x 26"
16
105604-01H
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PERIMETER TRIM ACCESSORY
(Not Shown)
ACCESSORIES
Continued
PT32 - Black
PT32B - Brushed Brass
PT32PB - Polished Brass
PT32P - Platinum
Polished brass trim included with all mantel
accessories. Optional with built-in installation.
Provides a finished appearance covering rough
and/or unfinished mantel edges.
HARDWOOD CABINET HEARTH
BASE
GC3333F Series - Walnut Finished
GC3334U Series - Unfinished
GC3335F Series - Oak Veneer Finished
GM3004W Series - Off White
The cabinet hearth base creates a handsome riser
for the firebox (cannot be used with corner mantel
or face mantel).
BRASS HOOD ACCESSORY - GA6096
(Not Shown)
All models. Decorative polished brass hood en-
hances the appearance of the firebox.
1
9
2 16
Dimensions (WxHxD): 58" x 6 / " x 28 / "
SLIM HEARTH BASE
(Not Shown)
G3005J - Jade Marble Laminate
G3005S - Sandstone Marble Laminate
G3005B - Black Onyx Marble Laminate
The slim hearth base allows you to further cus-
tomize your firebox. Dimensions (WxHxD): 41
7
8
/ " x 5/8" x 10"
LAMINATE TRIM FOR HEARTH OR
MANTEL
G3002J - Jade Marble Laminate Mantel
Trim
G3003J - Jade Marble Laminate Hearth
Base Trim
G3002S - Sandstone Marble Laminate
Mantel Trim
G3003S - Sandstone Marble Laminate
Hearth Base Trim
G3002B - Black Onyx Marble Laminate
Trim
G3003B - Black Onyx Marble Laminate
Hearth Base Trim
Mantel trim for cabinet or corner mantel. Hearth
base trim for hardwood hearth bases.
105604-01H
17
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ILLUSTRATED PARTS BREAKDOWN
MODELS
FB32NCA AND NLFB32NC
17
17
13
15
16
17
5
1
2*
7
16
16
4*
3*
18
11
16
2*
16
9
14
18
12
16
10
19
6
20
8
18
105604-01H
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PARTS LIST
This list contains replaceable parts used in your firebox. When ordering parts, follow the instructions
listed under Replacement Parts on page 15 of this manual.
KEY
NO.
PART NUMBER
FB32NCA
NLFB32NC
DESCRIPTION
QTY.
1
101872-03
101889-01
101929-04
101932-04
103207-01
103208-01
**
101872-03
Firebox Top
1
3
2
*
Firebrick Retainer
Rear Firebrick
Side Firebrick
3
*
1
4
*
2
5
103207-01
103208-01
**
Outer Casing
1
6
Outer Shell Base
Firebox Wrapper
Assembly Screen
1
7
1
8
103297-01
103297-01
2
9
103217-01CK 103217-01CK Hood
1
10
11
12
13
14
15
16
103773-02
**
103773-02
**
Front Assembly
1
Firebox Bottom
1
103809-01
103816-01
101348-01
101357-03
103809-01
103816-01
101348-01
Screen Rod
2
Firebox Insulation
Firebox Support
1
2
101357-03
____
Outer Casing Top
Hex Head Screw, #10-16
Hex Head Screw, #10-16
Stand Off
1
M11084-26
____
49
46
3
M11084-26
098194-02
098304-01
099230-01
099230-02
17
18
19
20
098194-02
098304-01
099230-01
099230-02
Phillips Pan Head Screw, #10
Hex Head Screw
Shoulder Screw
11
3
2
*Not Included with Model NLFB32NC
** Not available for field replacement.
105604-01H
19
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ILLUSTRATED PARTS BREAKDOWN
MODELS
FB32CA AND NLFB32C
15
16
5
1
2*
7
16
16
4*
18
3*
2*
18
11
17
16
16
9
18
12
14
19
10
16
20
13
6
8
22
21
20
105604-01H
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PARTS LIST
This list contains replaceable parts used in your firebox. When ordering parts, follow the instructions
listed under Replacement Parts on page 15 of this manual.
KEY
NO.
PART NUMBER
FB32CA
NLFB32C
DESCRIPTION
QTY.
1
101872-03
101889-01
101929-04
101932-04
103207-01
103208-01
**
101872-03
Firebox Top
1
3
2
*
Firebrick Retainer
Rear Firebrick
Side Firebrick
3
*
1
4
*
2
5
103207-01
103208-01
**
Outer Casing
1
6
Outer Shell Base
Firebox Wrapper
Assembly Screen
1
7
1
8
103297-01
103297-01
2
9
103217-01CK 103217-01CK Hood
1
10
11
12
13
14
15
16
103773-01
**
103773-01
**
Front Assembly
1
Firebox Bottom
1
103809-01
M12461-2
101348-01
101357-01
103809-01
M12461-2
101348-01
Screen Rod
2
Screw, Outlet Mounting
Firebox Support
1
2
101357-01
____
Outer Casing Top
Hex Head Screw, #10-16
Hex Head Screw, #10-16
Strain Relief Fitting
Phillips Pan Head Screw, #10
Hex Head Screw
Shoulder Screw
1
M11084-26
____
49
46
1
M11084-26
103771-01
098304-01
099230-01
099230-02
GA3555
17
18
19
20
21
22
103771-01
098304-01
099230-01
099230-02
GA3555
13
3
2
Duplex Outlet
1
103457-01
103457-01
Button Plug
1
*Not Included with Model NLFB32C
** Not available for field replacement.
105604-01H
21
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NOTES
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22
105604-01H
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NOTES
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105604-01H
23
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WARRANTY INFORMATION
KEEP THIS WARRANTY
Model
Serial No.
Date Purchased
Always specify model and serial numbers when communicating with the factory.
We reserve the right to amend these specifications at any time without notice. The only warranty applicable is our
standard written warranty. We make no other warranty, expressed or implied.
LIMITED WARRANTY
VENT-FREE FIREBOX
DESA warrants this product to be free from defects in materials and components for four (4) years from the date
of first purchase, provided that the product has been properly installed, operated and maintained in accordance
with all applicable instructions. To make a claim under this warranty the Bill of Sale or cancelled check must
be presented.
This warranty is extended only to the original retail purchaser. This warranty covers the cost of part(s) required to
restore this heater to proper operating condition and an allowance for labor when provided by a DESA Authorized
Service Center. Warranty part(s) MUST be obtained through authorized dealers of this product and/or DESA who
will provide original factory replacement parts. Failure to use original factory replacement parts voids this war-
ranty. The heater MUST be installed by a qualified installer in accordance with all local codes and instructions
furnished with the unit.
This warranty does not apply to parts that are not in original condition because of normal wear and tear, or parts
that fail or become damaged as a result of misuse, accidents, lack of proper maintenance or defects caused by
improper installation. Travel, diagnostic cost, labor, transportation and any and all such other costs related to
repairing a defective heater will be the responsibility of the owner.
TO THE FULL EXTENTALLOWED BYTHE LAW OF THE JURISDICTION THAT GOVERNS THE SALE OF
THE PRODUCT; THIS EXPRESS WARRANTYEXCLUDESANYANDALLOTHER EXPRESSED WARRAN-
TIESAND LIMITSTHE DURATION OFANYANDALLIMPLIEDWARRANTIES, INCLUDINGWARRANTIES
OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE TO FOUR (4) YEARS ON ALL
COMPONENTS FROM THE DATE OF FIRST PURCHASE; AND DESAʼS LIABILITY IS HEREBY LIMITED
TO THE PURCHASE PRICE OF THE PRODUCT AND DESA SHALL NOT BE LIABLE FOR ANY OTHER
DAMAGES WHATSOEVER INCLUDING INDIRECT, INCIDENTAL OR CONSEQUENTIAL DAMAGES.
Some states do not allow a limitation on how long an implied warranty lasts or an exclusion or limitation of
incidental or consequential damages, so the above limitation on implied warranties, or exclusion or limitation on
damages may not apply to you.
This warranty gives you specific legal rights, and you may also have other rights that vary from state to state.
For information about this warranty write:
2701 Industrial Drive
P.O. Box 90004
Bowling Green, KY 42102-9004
105604-01
Rev. H
07/04
105604 01
NOT A UPC
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