®
UNVENTED (VENT-FREE)
32" LogMate® UNIVERSAL
FIREBOX
OWNER’S OPERATION AND INSTALLATION MANUAL
FB32CA (shown)
and NLFB32C
Circulating
Louvered;
FB32NCA and
Shown with optional
NLFB32NC
Noncirculating
Smooth Face
Models
cabinet mantel, hearth
base, brass trim, and
marble trim
accessories.
WARNING: Improper installation,
adjustment, alteration, service, or
maintenance can cause injury or
property damage. Refer to this
manualforcorrectinstallationand
operational procedures. For as-
sistanceoradditionalinformation
consult a qualified installer, ser-
vice agency, or the gas supplier.
WARNING: If the information in this manual is not
followed exactly, a fire or explosion may result caus-
ing 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.
WARNING:Foruseonlywithdeco-
rative type unvented room heat-
ers. Do not build a wood fire.
• 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.
This firebox has been tested and
approvedbyI.A.S.undertheirREQ.
2-97 for use with any ANS Z21.11.2
approved gas logs.
— Installation and service must be performed by a
qualifiedinstaller,serviceagency,orthegassupplier.
This firebox may be installed in an aftermarket* manufactured (mobile) home, where not prohibited
by state or local codes.
* Aftermarket: Completion of sale, not for purpose of resale, from the manufacturer (i.e. Installation of this product is
permitted after the manufactured (mobile) home is sited).
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OWNER’S MANUAL
PRODUCT
SPECIFICATIONS
Standoffs (Models FB32NCA
and NLFB32NC only)
35 1/16"
3 7
/8"
2 3
/4"
1 1
/4"
Built-in
19 3
/8"
Nailing
Flanges
16 1
/4"
31 3
/4"
2 3
/
4
"
"
6 3
/4"
6 3
/
8
Louvers
(Models FB32CA and NLFB32C only)
Figure 1 - Firebox Front View
Standoffs
(Models FB32NCA and NLFB32NC only)
2 3/4
"
1 1/2
"
22 1
/2"
6"
16 11/16"
13 1
/4"
*
14 1
/4"
*
19 1
/4"
33 11/16"
32 3/16"
12 1/2
"
31 5
34 3
35 5
/
/
/
8
8
8
"
9 3/4
"
"
"
4 5/8
"
*Note: 14 1/4" is total firebox cavity depth including brick liner.
13 1/4" is depth of flat floor including brick liner.
2 1/2
"
Figure 3 - Firebox Top View
Electrical
Access Hole Hole with Bushing
Electrical Access
Gas Line Access
Figure 2 - Firebox Side View
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®
UNVENTED 32" LogMate® FIREBOX
buildings of unusually tight construction,
you must provide additional fresh air.
PRODUCT
FEATURES
AIR FOR
COMBUSTION AND
VENTILATION
Unusually tight construction is de-
fined as construction where:
OPERATION
a. walls and ceilings exposed to the
outside atmosphere have a con-
tinuous water vapor retarder with
a rating of one perm (6x10-11 kg
per pa-sec-m2) or less with open-
ings gasketed or sealed and
This firebox is designed for use with ap-
proved ANS Z21.1.2 decorative type
unvented room heaters. (Physical size limi-
tations apply. Refer to minimum firebox
requirements supplied with log heater.) It
requiresnooutsideventingorchimneymak-
inginstallationeasyandinexpensive.When
used without the blower (models FB32CA
and NLFB32C only), the firebox requires
no electricity making it ideal for emergency
backup heat.
WARNING: This firebox shall
notbeinstalledinaconfinedspace
or unusually tight construction
unless provisions are provided
foradequatecombustionandven-
tilation air. Read the following in-
structions to insure proper fresh
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, be-
tween sole plates and floors, be-
tween wall-ceiling joints, be-
tween wall panels, at penetra-
tions for plumbing, electrical, and
gas lines, and at other openings.
Today’s homes are built more energy effi-
cient than ever. New materials, increased
insulation, and new construction methods
helpreduceheatlossinhomes.Homeowners
weather strip and caulk around windows and
doorstokeepthecoldairoutandthewarmair
in. During heating months, home owners
want their homes as airtight as possible.
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.
If your home meets all of the three
criteria above, you must provide ad-
ditional fresh air. See Ventilation Air
From Outdoors, page 6.
While it is good to make your home energy
efficient, your home needs to breathe. Fresh
air must enter your home. All fuel-burning
appliances need fresh air for proper com-
bustion and ventilation.
LOCATING
FIREBOX
If your home does not meet all of the
three criteria above, proceed to Deter-
mining Fresh-Air Flow For Firebox
Location, page 5.
Exhaust fans, fireboxes, clothes dryers, and
fuel burning appliances draw air from the
house to operate. You must provide ad-
equate fresh air for these appliances. This
will insure proper venting of vented fuel-
burning appliances.
PLANNING
Plan where you will install the firebox. This
will save time and money later when you
install the firebox. Before installation, con-
sider the following:
Confined Space and Unconfined
Space
TheNationalFuelGasCode(ANSZ2123.1,
1992 Section 5.3) 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
1. Where the firebox will be located. Al-
low for wall and ceiling clearances (see
Installation Clearances, page 7).
PROVIDING ADEQUATE
VENTILATION
The following are excerpts from National
Fuel Gas Code. NFPA 54/ANS Z223.1, Sec-
2. Everything needed to complete instal-
lation.
tion5.3, AirforCombustionandVentilation. is not less than 50 cubic feet per 1,000 Btu
3. These models CANNOT be installed in
a bedroom or bathroom.
per hour (4.8 m3 per kw) of the aggregate
All spaces in homes fall into one of the three
inputratingofallappliancesinstalledinthat
following ventilation classifications:
4. Proper air for combustion and ventila-
tion (see below).
space. Rooms communicating directly with
1. Unusually Tight Construction
the space in which the appliances are in-
2. Unconfined Space
3. Confined Space
stalled*, through openings not furnished
with doors, are considered a part of the
unconfined space.
This firebox shall not be installed in a con-
fined space or unusually tight construction
unless provisions are provided for adequate
combustion and ventilation air.
The information on pages 4 through 6 will
help you classify your space and provide
adequate ventilation.
Unusually Tight Construction
The air that leaks around doors and win- * Adjoining rooms are communicating only
dows may provide enough fresh air for
combustion and ventilation. However, in tion grills between them.
iftherearedoorlesspassagewaysorventila-
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OWNER’S MANUAL
AIR FOR
COMBUSTION
AND VENTILATION
Continued
DETERMINING FRESH-AIR FLOW FOR FIREBOX 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 firebox plus any adjoining rooms with doorless passageways or ventilation grills
between the rooms.
1. Determine the volume of the space (length x width x height).
Length x Width x Height = _________ cu. ft. (volume of space)
Example: Space size22 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. Divide the space volume by 50 cubic feet to determine the maximum Btu/Hr the space can support.
__________ (volume of space) ÷ 50 cu. ft. = (Maximum Btu/Hr the space can support)
Example: 3168 cu. ft. (volume of space) ÷ 50 cu. ft. = 63.3 or 63,300 (maximum Btu/Hr the space can support)
3. Add the Btu/Hr of all fuel burning appliances in the space.
Gas water heater*
Gas furnace
_____________________ Btu/Hr
_____________________ Btu/Hr
_____________________ Btu/Hr
_____________________ Btu/Hr
Example:
Gas water heater
40,000
Btu/Hr
Vented gas heater
Gas firebox logs
Vent-free firebox
with log heater
+
=
39,000
79,000
Btu/Hr
Btu/Hr
Total
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.
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: 63,300 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:
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, page 6.
B. Vent room directly to the outdoors. See Ventilation Air from Outdoors, page 6.
C. Install a lower Btu/Hr firebox, 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 unconfined space. You will need no
additional fresh air ventilation.
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 by one of the methods described in the National Fuel Gas Code, ANS Z223.1, 1992, Section 5.3 or
applicable local codes.
Continued
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®
UNVENTED 32" LogMate® FIREBOX
AIR FOR
COMBUSTION AND
12"
VENTILATION
Continued
Ventilation
Ventilation Grills
Into Adjoining Room,
Option 2
Grills
Into Adjoining
Room,
VENTILATION AIR
Or
Ventilation Air From Inside
Building
Remove
Door into
Adjoining
Room,
Option
3
Option 1
Thisfreshairwouldcomefromanadjoining
unconfined space. When ventilating to an
adjoining unconfined space, you must pro-
vide two permanent 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 op-
tion 3, Figure 4). Follow the National Fuel
Gas Code NFPA 54/ANS Z223.1, Section
5.3, Air for Combustion and Ventilation for
required size of ventilation grills or ducts.
12"
WARNING: Rework work-
sheet, adding the space of the
Figure 4 - Ventilation Air from Inside Building
adjoining unconfined space. The
combined spaces must have
enough fresh air to supply all
appliances in both spaces.
Ventilated
Attic
Outlet
Air
Ventilation Air From Outdoors
Provide extra fresh air by using ventilation
grills or ducts. You must provide two per-
manent openings: one within 12" of the
ceiling and one within 12" of the floor.
Connect these items directly to the outdoors
orspacesopentotheoutdoors.Thesespaces
include attics and crawl spaces.
Outlet
Air
To Attic
To
Crawl
Space
IMPORTANT: Do not provide openings for
inlet or outlet air into attic if attic has a
thermostat-controlledpowervent.Heatedair
enteringtheatticwillactivatethepowervent.
Inlet
Air
Ventilated
Crawl Space
Inlet Air
Figure 5 - Ventilation Air from Outdoors
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OWNER’S MANUAL
Note:YourVanguardfireboxisdesignedto
Mantel Clearances for
Conventional Installation
INSTALLATION
be used in zero clearance installations. Wall
or framing material can be placed directly
against any exterior surface on the rear,
sides, or top of your firebox, except where
standoff spacers are integrally attached. If
standoff spacers are attached to your fire-
box, these spacers can be placed directly
against wall or framing materials.
NOTICE: This heater is intended
foruseassupplementalheat.Use
this heater along with your pri-
mary heating system. Do not in-
stall this heater as your primary
heat source. If you have a central
heating system, you may run
system’scirculatingblowerwhile
using heater. This will help circu-
late the heat throughout the
house. In the event of a power
outage, you can use this heater
as your primary heat source.
Note: Clearances are
the same if using
optional cabinet mantel
or built-in installation.
42"
MINIMUM
CLEARANCE
Use the dimensions shown for rough open-
ingstocreatetheeasiestinstallation(seeBuilt-
In Firebox Installation, pages 11 and 12).
16"
Face or
Cabinet
Mantel
INSTALLATION
CLEARANCES
12"
Corner
Mantel
Floor - 0"
WARNING:Maintainthemini-
mum clearances. If you can, pro-
vide greater clearances from
floor, ceiling, and adjoining wall.
NOTICE: A qualified service per-
son must install firebox. Follow
all local codes.
Figure6-MinimumClearancetoWalland
Ceiling
Mantel Clearances for Built-In
Installation
Carefullyfollowtheinstructionsbelow.This
will ensure safe installation.
WARNING: Never install the
firebox
If placing custom mantel above built-in
firebox, youmustmeettheminimumallow-
ableclearancebetweenmantelshelfandtop
of firebox opening shown in Figure 7 on
page 8. These are the minimum allowable
mantel clearances for a safe installation.
Use larger clearances wherever possible to
minimize the heating of objects and materi-
als placed on the mantel.
• 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
Minimum Wall and Ceiling
Clearances (see Figure 6)
A. Clearances from the side of the firebox
opening to any combustible wall should
not be less than 16 inches for a cabinet
mantel or 12 inches for a corner instal-
lation.
• in high traffic areas
• in windy or drafty areas
B. Clearances from the top of the firebox
opening to the ceiling should not be less
than 42 inches.
CAUTION: Do not allow the
vent-free gas log heater to touch
or extend beyond the fireplace
screen.
CAUTION: Log heaters in-
stalledinthisfireboxcreatewarm
aircurrents.Thesecurrentsmove
heat to wall surfaces next to fire-
box. Installing firebox next to vi-
nyl or cloth wall coverings or
operating firebox where impuri-
ties(suchastobaccosmoke,aro-
matic candles, cleaning fluids,
oil or kerosene lamps, etc.) in the
air exist, may discolor walls.
C. When the firebox is installed directly
on carpeting or other combustible ma-
terial, other than wood flooring, the
firebox should be installed on a metal
or wood panel extending the full width
and depth of the enclosure.
If your installation does not meet the mini-
mum clearances in Figure 7, page 8, you
must:
• raise the mantel to an acceptable height,
OR
• remove the mantel.
IMPORTANT: Vent-free gas log heaters
add moisture to the air. Although this is
beneficial, installingfireboxinroomswith-
out enough ventilation air may cause mil-
dew to form from too much moisture. See
AirforCombustionandVentilation,pages4
through 6.
IMPORTANT: Make sure the firebox is
level. If firebox is not level, log set will not
work properly.
Continued
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®
UNVENTED 32" LogMate® FIREBOX
2. Place the blower against lower rear wall
INSTALLATION
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.
Continued
Note:
All vertical measurements
are from top of fireplace
opening to bottom of mantel
shelf. All measurements
are in inches.
Mantel Shelf
10"
3. Be certain that all wire terminals are
securely attached to terminals on
blower motor and that the screw retain-
ing the green ground wire is tight.
8"
6"
Facing material (above
firebox) may be of
2 1/2"
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 plas-
tic plug and discard.
combustible material,
including decorative
mantel ornaments.
For FB32NCA and NLFB32NC
Series noncirculating
smooth face models
18.5" 20" 21" 22"
13" 16" 19" 21"
For FB32CA and NLFB32C
Series circulating louvered
models only
Firebox
5. Place speed control against inner wall
of front panel, pushing the plastic con-
trol shaft forward through the opening
(see Figure 10, page 9).
Wire-mesh
Screen
6. While supporting speed control, secure
control shaft with lock nut by pushing
and turning lock nut with pliers clock-
wise until it is tight against front panel.
Place control knob provided on shaft
(see Figure 10, page 9).
Supplied
Firebox Hood
Must Be Used
at All Times
Lower
Rear Wall
of Firebox
Wrapper
Figure 7 - Minimum Mantel Clearances for Built-In Installation
INSTALLING BLOWER
ACCESSORY
(Model FB32CA only)
WARNING: If there is a duplex
Blower
electricaloutletinstalledintheright
side of the bottom of the fireplace
base area, be sure that the electri-
calpowertotheoutletisturnedoff
before proceeding with blower in-
stallation. Failure to do this may
result in serious injury.
You may install blower accessory GA3700
with conventional installation (page 10) or
with built-in installation (page 11 and 12)
with models FB32CA and NLFB32C only.
Screws
Floor
Supports
Conventional Installation of
Blower Accessory
Plastic
Hole Plug
NOTICE: If a log set is currently
installed in the firebox, discon-
nect log set from gas supply and
remove from firebox. Contact a
qualifiedservicepersontodothis.
Exhaust
Port
Screws
1. Remove the firebox bottom:
a. Remove the 4 screws that secure the
bottom of the firebox (see Figure 8).
b. Carefully raise and remove the fire-
box bottom from the firebox.
Top
Mounting
Tab
Figure8-RemovingScrewsfromFirebox
Bottom
Figure 9 - Mounting Blower to Firebox
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OWNER’S MANUAL
Operating the Blower
Control
Shaft
Speed
Control
INSTALLATION
Light your gas appliance with the blower
off. After about 15 minutes, turn the blower
on to deliver heated air at the top louvers.
Theblowerfeaturesavariablecontrolwhich
allows you to select the speed you desire.
Continued
Lock Nut
7. Plug in blower power cord.
a. If your firebox is installed as a free-
standing unit, determine whether the
power cord will exit the left side or the
right side of the firebox. Install 1 plas-
tic bushing provided into the 1 1/2" hole
in the floor support on the exit side.
Install the second plastic bushing pro-
vided into the 1 1/2" 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.
Control Knob
Figure 10 - Attaching Speed Control
Note: Periodically check the louvers of the
firebox and remove any dust, dirt, or other
obstructions.
INSTALLING LOG HEATER IN
FIREBOX
Plastic
Bushing
CAUTION: Do not remove the
metal data plates attached to the
heater base assembly. The data
platescontainimportantwarranty
information.
Figure 11 - Installing Plastic Bushing for
Power Cord
b. If your firebox installation is re-
cessed and/or pre-wired, see Built-
In Installation of Blower Accessory,
column 2.
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.
CAUTION: Do not pick up log
base assembly by burners. This
could damage burners. Only
handle base by grates.
8. Turn on power to duplex outlet if previ-
ously turned off per the warning in step 1.
9. Check to make sure that the power cord
is completely clear of the blower wheel
and that there are no other foreign ob-
jects in blower wheel. Turn blower on
and check for operation.
1. Remove four screws holding firebox
bottom in place.
2. Clamp electrical cable into firebox
through smallest hole in outer casing
using strain relief provided.
2. Lift and remove firebox bottom (see
Figure 13, page 10).
3. Route wires from electrical box through
hole in side of heater and hole in sup-
port bracket (see Figure 12).
3. If installing GA3700 Blower Accessory
(Models FB32CA and NLFB32C only),
see Installing Blower Accessory, page 8.
WARNING: Never touch the
blower wheel while in operation.
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.
4. Route flexible gas line from manual
shutoff valve into firebox through side.
10. Peel off the backing paper and stick the
supplied wiring diagram decal on the fire-
box bottom approximately 12" in front
of the blower.
NOTICE:Mostbuildingcodesdo
not permit concealed gas con-
nections. A flexible gas line is
recommended to allow accessi-
bility from the firebox. The flex-
ible gas supply line connection
to the manual shutoff valve
should be accessible.
5. Replace duplex outlet with screw.
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.)
6. Plug blower power cord into duplex
outlet.
7. Replace bottom of firebox.
Cables From
Electrical
Source
Support
12. Reattach firebox bottom using 4 screws
removed in step 1.
Bracket
Blower
Note: Discard the remaining hardware
items.
5. Install and properly test gas log heater.
Follow installation instructions in-
cluded with the vent-free gas log heater
that is being installed.
13. Install the log set heater according to
the installation instructions supplied
with the heater.
6. Replace firebox bottom and secure with
screws.
Duplex
Outlet
NOTICE: A qualified electrician
must connect electrical wiring to
duplex outlet for built-in installa-
tion. Follow all local codes. In
absenceoflocalcodesfollowThe
National Electrical Code ANS/
NFPA 70.
Screw
Blower Power Cord
Figure 12 - Routing Blower Accessory
Power Cord for Built-In Installation
Continued
105604
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®
UNVENTED 32" LogMate® FIREBOX
floor or using corner mantel, an optional
G3005 Slim Base kit may be installed.
INSTALLING FIREPLACE
SCREEN
1. Insert each rod through nine rings lo-
cated at top of screen.
INSTALLATION
Continued
1. Assemble cabinet mantel, hearth base,
brass trim, and trim accessories. As-
sembly instructions are included with
each accessory.
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.
2. If using an optional GA3700 blower
(FB32CA and NLFB32C 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 cabi-
net mantel will cover it when installed
(see Figure 18).
3. Insert other rod into front hole on right
side of firebox and fasten using remain-
ing shoulder screw.
Rear Hole
Front
Hole
Screw
Figure 13 - Removing Firebox Bottom
3. Install gas piping to firebox location.
This installation 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 Con-
necting to Gas Supply in your log set
owner’s manual.
Screws
Heater Base
Mounting
Rod
Ring
Cut to
7 1/4"
Bracket
Length
NOTICE: A qualified service per-
son must connect firebox to gas
supply. Follow all local codes.
Firebox
Bottom
Screen
Electrical
Gas Line
Access
Hole
Figure 16 - Installing Fireplace Screen
(Shown Without Fireplace Hood for
Clarity)
Outlet
Figure 14 - Cutting Brackets
Flexible
Gas Line
Hearth
Base
INSTALLING FIREPLACE
HOOD
1. Attach three zinc-colored shoulder
screws to back of hood.
FIREBOX INSTALLATION
USING OPTIONAL
ACCESSORY MANTELS
This firebox may be installed using the cor-
nerorcabinetmantelwithhearthbaseacces-
soriesagainstawallinyourhome. Youmust
use a GA6090 brass trim kit included with
the mantel accessories (see Accessories,
pages 12 and 13). Follow the instructions
below to install the firebox in this manner.
2. Insert hood into hood-mounting slots
on firebox.
Figure17-PlacingHearthBaseAccessory
Against Wall
3. Hold hood in place. Insert two black
Phillips screws through bottom of hood
and tighten.
Cabinet
Mantel
Hood
Note: The instructions below show installa-
tion using GM100F/GM101U/GM102W/
GM106F/GM107U series cabinet mantels
andtheG3000F/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.
Ifmountingfireboxandcabinetmanteltothe
Hood
Mounting Slot
Shoulder
Screw
Screw
Figure 15 - Installing Fireplace Hood
Figure 18 - Installing Cabinet Mantel
105604
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OWNER’S MANUAL
11. Carefully insert firebox into cabinet 2. Install gas piping to firebox location. This
INSTALLATION
mantel. Be careful not to scratch or
damage hearth base, cabinet mantel, or
any laminate trim on hearth base. Re-
move protective material from top of
hearth base and from front of firebox
(if any).
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 piping. See Connecting to Gas
Supply in log set owner’s manual.
Continued
4. Place hearth base accessory against wall
at installation location. Cut an access
hole in hearth top to run flexible gas
line to firebox (see Figure 17, page 10).
Make sure to locate access hole so cabi-
net mantel will cover it when installed.
Note: You can secure base to floor us-
ing wood screws. Countersink screw
heads and putty over.
12. Install the trim after final finishing and/ 3. Carefully set firebox in front of rough
or painting of wall. See instructions
included with mantel accessory for at-
taching brass trim.
opening with back of firebox inside wall
opening. IMPORTANT: If installing
Brass Trim Kit GA6090, see instruc-
tions included with brass trim accessory.
You must install shoulder screws now.
13. Check all gas connections for leaks. See
Checking Gas Connections in log set
owner's manual.
5. Route flexible gas line through access
hole in hearth base.
4. If using GA3700 blower accessory
(Models FB32CA and NLFB32C
only), see Installing Blower Accessory
for built-in installation, page 8.
6. Center cabinet mantel on hearth base
(see Figure 18, page 10). Make sure
mantel is flush against wall.
5. Attach flexible gas line to log set. See
Connecting to Gas Supply in log set
owner’s manual.
7. Break off nailing flanges (see Figure 19)
with hammer or pliers.
IMPORTANT: When installing Brass
Trim Kit, see instructions included with
mantel accessory.
6. Carefully insert firebox into rough
opening.
8. Place cardboard or other protective
material on top of hearth base. Care-
fully set firebox on protective material,
with back of firebox inside mantel
opening.
9. Attach flexible gas line to log set. See
Connecting to Gas Supply in your log
set owner’s manual.
17 3/4"
Figure 20 - Inserting Firebox Into Cabinet
Mantel
33" (FB32CA and
NLFB32CA)
34 1/4" (FB32NCA and
NLFB32NCA)
10. If installing GA3700 blower (FB32CA
and NLFB32C models only), route
blower electrical cord through bushing
included with blower accessory in right
side firebox support and bushing in side
access opening of firebox. Plug elec-
trical cord into electrical outlet. See
Installing Blower Accessory, page 8.
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. If installing a mantel above the firebox,
but you must follow the clearances shown in
Figure 7, page 8. Follow the instructions
below to install the firebox in this manner.
34 3/4"
Figure 21 - Rough Opening for Installing
in Wall
1. Frame in rough opening. Use dimen-
sions shown in Figure 21 for the rough
opening
39 3/8"
27 7/8"
If installing in a corner, use dimensions
shown in Figure 22 for the rough open-
ing. The height is 33" (FB32CA and
NLFB32C) or 34 1/4" (FB32NCA and
NLFB32NC), which is the same as the
wall opening in Figure 21.
34 3/4"
55 5/8"
Nailing
Flanges
Figure 22 - Rough Opening for Installing
in Corner
Figure 19 - Location of Nailing Flanges
Continued
105604
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®
UNVENTED 32" LogMate® FIREBOX
INSTALLATION
Height
Front Width
Depth
Continued
Model #
Actual Framing Actual Framing Actual Framing
32 3/16" 33"
32 3/16" 33"
33 11/16" 34 1/4"
34 3/8" 34 3/4" 16 11/16" 17 3/4"
34 3/8" 34 3/4" 16 11/16" 17 3/4"
7. Attach firebox to wall studs using nails
or wood screws through holes in nail-
ing flange (see Figure 23).
FB32CA
NLFB32C
FB32NCA
34 3/8" 34 3/4"
34 3/8" 34 3/4"
16 11/16" 17 3/4"
16 11/16" 17 3/4"
8. Check all gas connections for leaks. See
Checking Gas Connections in log set
owner’s manual.
NLFB32NC 33 11/16" 34 1/4"
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.
REPLACEMENT
PARTS
Note: Use only original replacement parts.
Thiswillprotectyourwarrantycoveragefor
parts replaced under warranty.
ACCESSORIES
Purchasethesefireboxaccessoriesfromyour
local dealer. If they can not supply these
accessories,callDESAInternational’sSales
Department at 1-800-432-2382 for infor-
mation. You can also write to the address
listed on the back page of this manual.
Nails or Wood
Screws
PARTS UNDER WARRANTY
Contact authorized dealers of this product.
If they can’t supply original replacement
part(s), call DESA International’s Techni-
cal Service Department at
1-800-DESA LOG (1-800-337-2564).
When calling DESA International, have
ready
• your name
• your address
• model and serial numbers of your firebox
• how firebox was malfunctioning
• type of gas used (propane or natural gas)
• purchase date
CABINET MANTEL
GM100F Series - Walnut
Finished
GM101U Series - Unfinished
GM106F Series - Oak Veneer
Finished
GM107U Series - Oak Veneer
Unfinished
GM102W Series - Off White
Usually, we will ask you to return the defec-
tive part to the factory.
Nailing
Flanges
PARTS NOT UNDER
WARRANTY
Figure 23 - Attaching Firebox to Wall
Studs
Contact authorized dealers of this product.
If they can’t supply original replacement
part(s), call DESA International’s Parts
Department at 1-800-972-7879 for referral
information.
TECHNICAL
SERVICE
You may have further questions about in-
stallation, operation, or troubleshooting.
Shown with optional base and laminate
hearth and mantel trim accessories.
Dimensions (WxHxD): 56 3/4" x 48" x 22 3/4
"
When calling DESA International, have
ready
If so, contact DESA International’s Techni-
calServiceDepartmentat1-800-DESALOG
(1-800-337-2564).
• model number of your firebox
• the replacement part number
You can also visit DESA International’s
Technical Service web site at
105604
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OWNER’S MANUAL
ACCESSORIES
Continued
HARDWOOD HEARTH BASE
G3000F Series - Walnut
Finished
Mantel Trim
G3001U Series - Unfinished
G3006F Series - Oak Veneer
Finished
G3007U Series - Oak Veneer
Unfinished
Hearth Base Trim
CORNER MANTEL
GM200F Series - Walnut
Finished
GM201U Series - Unfinished
GM3004W Series - Off White
Shown with optional laminate mantel trim
accessory.
Thehearthbasecreatesahandsomeriserfor
the firebox (cannot be used with corner
mantel or face mantel). Dimensions
(WxHxD): 58" x 6 1/2" x 28 9/16"
7
3
Dimensions (WxHxD): 60 /8" x 48 /4" x
34 5/8"
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
BRASS HOOD ACCESSORY -
GA6096 (Not Shown)
Decorative polished brass hood enhances
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
customize your firebox. Dimensions
(WxHxD): 41 7/8" x 5/8" x 10"
the appearance of the firebox.
BRASS TRIM ACCESSORY -
GA6090 (Not Shown)
Included with all mantel accessories. Op-
tional with built-in installation. Provides a
finished appearance covering rough and/or
unfinished mantel edges.
G3003B - Black Onyx Marble
Laminate Hearth Base Trim
Mantel trim for cabinet or corner mantel.
Hearthbasetrimforhardwoodhearthbases.
BLOWER ACCESSORY -
GA3700
MANUAL SHUTOFF VALVE -
GA5010
Use with Models FB32CA and NLFB32C
only.Thevariablespeedblowerallowsyouto
selectthedesiredspeed.Theblowercirculates
heated air from the fireplace into the room.
Manual shutoff valve with 1/8" NPT tap.
105604
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®
UNVENTED 32" LogMate® FIREBOX
ILLUSTRATED
17
17
PARTS
13
BREAKDOWN
15
17
FB32NCA
NLFB32NC
16
5
1
2*
7
16
16
16
4*
18
3*
18
11
2*
16
16
9
14
18
12
16
10
19
6
20
8
*Not Included with Model NLFB32NC
105604
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OWNER’S MANUAL
This list contains replaceable parts used in your firebox. When ordering parts, follow the instructions
listed under Replacement Parts on page 12 of this manual.
PARTS LIST
FB32NCA
NLFB32NC
KEY
PART NUMBER
NO. FB32NCA
NLFB32NC
DESCRIPTION
QTY.
1
2
3
4
5
6
7
8
101872-03
101889-01
101929-02
101932-02
103207-01
103208-01
103245-01
103297-01
103217-01CK
103773-02CK
103250-01
103809-01
103816-01
101348-01
101357-03
M11084-26
101872-03
*
Firebox Top
Firebrick Retainer
Rear Firebrick
Side Firebrick
Outer Casing
1
3
1
2
1
1
1
2
1
1
1
2
1
2
1
*
*
103207-01
103208-01
101838-02
103297-01
103217-01CK
103773-02CK
103250-01
103809-01
103816-01
101348-01
101357-03
Outer Shell Base
Firebox Wrapper
Assembly Screen
Hood
Front Assembly
Firebox Bottom
Screen Rod
Firebox Insulation
Firebox Support
Outer Casing Top
Hex Head Screw, #10-16
Hex Head Screw, #10-16
Stand Off
Phillips Pan Head Screw, #10
Hex Head Screw
Shoulder Screw
9
10
11
12
13
14
15
16
49
46
3
13
3
M11084-26
098194-02
098304-01
099230-01
099230-02
17
18
19
20
098194-02
098304-01
099230-01
099230-02
2
*Not Included with Model NLFB32NC
105604
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®
UNVENTED 32" LogMate® FIREBOX
ILLUSTRATED
PARTS
BREAKDOWN
15
FB32CA
16
NLFB32C
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
*Not Included with Model NLFB32C
105604
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OWNER’S MANUAL
This list contains replaceable parts used in your firebox. When ordering parts, follow the instructions
listed under Replacement Parts on page 12 of this manual.
PARTS LIST
FB32CA
NLFB32C
KEY
PART NUMBER
NO. FB32CA
NLFB32C
DESCRIPTION
QTY.
1
2
3
4
5
6
7
8
101872-03
101889-01
101929-02
101932-02
103207-01
103208-01
103245-01
103297-01
103217-01CK
103773-01CK
103250-01
103809-01
M12461-2
101872-03
*
Firebox Top
Firebrick Retainer
Rear Firebrick
Side Firebrick
Outer Casing
1
3
1
2
1
1
1
2
1
1
1
2
1
2
1
49
46
1
13
3
2
1
1
*
*
103207-01
103208-01
101838-02
103297-01
103217-01CK
103773-01CK
103250-01
103809-01
M12461-2
101348-01
101357-01
Outer Shell Base
Firebox Wrapper
Assembly Screen
Hood
Front Assembly
Firebox Bottom
Screen Rod
Screw, Outlet Mounting
Firebox Support
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
Duplex Outlet
9
10
11
12
13
14
15
16
101348-01
101357-01
M11084-26
M11084-26
103771-01
098304-01
099230-01
099230-02
103769-01
103457-01
17
18
19
20
21
22
103771-01
098304-01
099230-01
099230-02
103769-01
103457-01
Button Plug
*Not Included with Model NLFB32C
105604
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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 International 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
toproperoperatingconditionandanallowanceforlaborwhenprovidedbyaDESAAuthorizedServiceCenter. Warrantypart(s)MUST
be obtained through authorized dealers of this product and/or DESA International who will provide original factory replacement parts.
Failure to use original factory replacement parts voids this warranty. The heater MUST be installed by a qualified installer inaccordance
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.
TOTHEFULLEXTENTALLOWEDBYTHELAWOFTHEJURISDICTIONTHATGOVERNSTHESALEOFTHEPRODUCT;
THIS EXPRESS WARRANTY EXCLUDES ANY AND ALL OTHER EXPRESSED WARRANTIES AND LIMITS THE DURA-
TION OF ANY AND ALL IMPLIED WARRANTIES, INCLUDING WARRANTIES OF MERCHANTABILITY AND FITNESS
FOR A PARTICULAR PURPOSE TO FOUR (4) YEARS ON ALL COMPONENTS FROM THE DATE OF FIRST PURCHASE;
AND DESA INTERNATIONAL’S LIABILITY IS HEREBY LIMITED TO THE PURCHASE PRICE OF THE PRODUCT AND
DESA INTERNATIONAL 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:
INTERNATIONAL
2701 Industrial Drive
P.O. Box 90004
Bowling Green, KY 42102-9004
105604 01
105604-01
Rev. C
09/00
NOT A UPC
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