Page 1
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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.
WARNING: For use only with a listed gas-fired unvented
decorative room heater. Not to exceed 40,000 Btu/Hr.
Do not build a wood fire.
Carefully review the instructions supplied with the
decorative type unvented room heater for the minimum
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 approved gas logs.
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
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105604-01H2
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.
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
TABLE OF CONTENTS
Safety Information ............................................... 3
Local Codes ........................................................ 4
Unpacking ........................................................... 4
Product Specifications ......................................... 4
Product Features ................................................. 5
Locating Firebox ................................................. 5
Air for Combustion and Ventilation ...................... 6
Installation ........................................................... 8
Replacement Parts ............................................ 15
Technical Service .............................................. 15
Accessories ....................................................... 16
Illustrated Parts Breakdown and Parts List ....... 18
Warranty Information ...........................Back Cover
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105604-01H 3
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
before trying to assemble, operate,
or service this firebox. Improper
use of this firebox can cause seri
ous injury or deatah from burns,
fire, explosion, electrical shock, or
carbon monoxide poisoning.
WARNING: Any change to
this firebox or its controls can
be dangerous.
WARNING: Do not allow fans
to blow directly into the firebox.
Avoid any drafts that alter burner
flame patterns. Ceiling fans can
create drafts that alter burner flame
patterns. Altered burner patterns
can cause sooting.
WARNING: Do not use a blower insert, hood, heat exchanger
insert, or other accessory not ap
proved for use with this heater.
Do not use blower accessory
with Models NLFB32NC and
FB32NCA. Use only the provided
hood or GA6096 polished brass
hood accessory (see Accesso-
ries on page 16).
Due to high temperatures, the
firebox should be located out of
traffic and away from furniture
and draperies.
Do not place clothing or other
flammable material on or near
firebox. Never place any objects
on the firebox or logs.
Carefully supervise young chil
dren when they are in the room
with firebox.
Firebox front and screen become
very hot when running firebox.
Keep children and adults away
from hot surfaces to avoid burns
or clothing ignition. Firebox will
remain hot for a time after shutdown. Allow surfaces to cool
before touching.
You must operate this fireplace
with the provided fireplace
screen (closed) and hood in
place. Make sure these parts are
in place before running firebox.
This firebox has been tested and
approved with and without the
brick liner. If the liner is removed,
the model number reverts to the
NL (non-lined) series.
Keep the firebox area clear and
free from combustible materials,
gasoline, and other flammable
vapors and liquids.
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
• 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.
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105604-01H4
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.
6. Do not run firebox
• where flammable liquids or vapors are used
or stored
• under dusty conditions
7. Do not use this firebox to cook food or burn
paper or other objects.
8. Turn firebox off and let cool before servicing.
Only a qualified service person should service
and repair 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.
11.
Provide adequate clearances around air
openings.
LOCAL CODES
Install and use fireplace with care. Follow all local
codes. In the absence of local codes, use the latest edi
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).
*Available from:
American National Standards Institute, Inc.
1430 Broadway
New York, NY 10018
National Fire Protection Association, Inc.
Batterymarch Park
Quincy, MA 02269
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.
SAFETY INFORMATION
Continued
2. Check carton contents for the following:
• Screen assembly (2)
• Screen support rod (2)
• Hood
• Hardware and parts bag containing the
following:
• Ownerʼs Operation and Installation
Manual
• 2 - Black #10 x 3/8” Phillips screws
• 3 - Zinc #10 x 1/2” shouldered hex
screws
• 2 - Black #10 x 5/8” shouldered hex
screws
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.
PRODUCT
SPECIFICATIONS
Figure 1 - Firebox Front View
351/16"
313/4"
161/4"
11/4"
23/4"
23/4"
63/8"
193/8"
37/8"
63/4"
Built-in Nailing
Flanges
Standoffs (Models
FB32NCA and
NLFB32NC only)
Louvers (Models FB32CA
and NLFB32C only)
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105604-01H 5
121/2"
23/4"
11/2"
93/4"
45/8"
21/2"
6"
323/16"
3311/16"
Figure 2 - Firebox Side View
Gas Line
Access
Standoffs (Models FB32NCA
and NLFB32NC only)
Electrical
Access Hole
Electrical
Access Hole
with Bushing
221/2"
1611/16"
131/4"
*
141/4"
*
315/8"
343/8"
355/8"
191/4"
Figure 3 - Firebox Top View
*Note: 14
1
/
4
" is total firebox cavity depth
including brick liner. 13
1
/
4
" is depth of flat
floor including brick liner.
PRODUCT
SPECIFICATIONS
Continued
PRODUCT FEATURES
OPERATION
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.
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.
LOCATING FIREBOX
Plan where you will install the firebox. This will
save time and money later when you install the firebox. Before installation, consider the following:
1. Where the firebox will be located. Allow for
wall and ceiling clearances (see
Installation
Clearances, page 9).
2. Everything needed to complete installation.
3. These models CANNOT be installed in a
bedroom or bathroom.
4. Proper air for combustion and ventilation (see
page 6).
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105604-01H6
AIR FOR COMBUSTION
AND VENTILATION
WARNING: This firebox shall
not be installed in a confined
space or unusually tight construc
-
tion unless provisions are provid
ed 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 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 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 (6x10
-11
kg per pa-sec-m2) or
less with openings gasketed or sealed
and
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.
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.
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 communicating 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.
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105604-01H 7
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 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 size 20 ft. (length) x 16 ft.
(width) x 8 ft. (ceiling height) = 2560 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: 2560 cu. ft. (volume of space) x 20 =
51,200 (maximum Btu/Hr the space can support)
3. Add the Btu/Hr of all fuel burning appliances
in the space.
Vent-free heater ________
Btu/Hr
Gas water heater* ________
Btu/Hr
Gas furnace ________
Btu/Hr
Vented gas heater ________
Btu/Hr
Gas fireplace logs ________
Btu/Hr
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:
Gas water heater ________
Btu/Hr
Vent-free heater + ________
Btu/Hr
Total = ________
Btu/Hr
AIR FOR COMBUSTION
AND VENTILATION
Continued
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: 51,200 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 8
.
B. Vent room directly to the outdoors. See Ven-
tilation Air From Outdoors
, page 8.
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 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,
ANSI Z223.1/NFPA 54 Section 5.3
or applicable local codes.
40,000
39,000
79,000
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105604-01H8
AIR FOR COMBUSTION
AND VENTILATION
Continued
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 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
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.
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.
Figure 4 - Ventilation Air from Inside
Building
Or
Remove
Door into
Adjoining
Room,
Option
3
Ventilation Grills
Into Adjoining Room,
Option
2
Ventilation
Grills
Into Adjoining
Room,
Option 1
12"
12"
Outlet
Air
Ve
ntilated
Attic
Outlet
A
ir
Inlet
Air
Inlet Air
Ventilated
Crawl Space
To
Crawl
Space
To Attic
Figure 5 - Ventilation Air from Outdoors
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.
INSTALLATION
NOTICE: This heater is intended
for use as supplemental heat.
Use this heater along with your
primary heating system. Do not
install this heater as your primary heat source. If you have a
central heating system, you may
run system’s circulating blower
while using heater. This will help
circulate the heat throughout the
house. In the event of a power
outage, you can use this heater
as your primary heat source.
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
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
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105604-01H 9
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.
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.
Use the dimensions shown for rough openings to
create the easiest installation (see Built-In Firebox
Installation, page 14).
INSTALLATION CLEARANCES
WARNING: Maintain the
minimum clearances. If you can,
provide greater clearances from
floor, ceiling, and adjoining wall.
Carefully follow the instructions below. This will
ensure safe installation.
Minimum Clearances For Side Combustible
Material, Side Wall, and Ceiling
A. Clearances from the side of the fireplace
cabinet to any combustible material and wall
should follow diagram in Figure 6.
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 opening (see Figure 6).
B.
Clearances from the top of the fireplace opening
to the ceiling should not be less than 42 inches.
INSTALLATION
Continued
MINIMUM CLEARANCE TO
COMBUSTIBLE MATERIALS
Top Left and Bottom
Right Sides and Rear
42" 16" 0"
Figure 6 - Minimum Clearance for
Combustible to Wall
*Minimum 16 inches from Side Wall
Example
*
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.
CAUTION: Close screens
before operation of vent-free
gas log heater. Do not allow the
heater to touch or extend beyond
the fireplace screen.
If your installation does not meet the minimum
clearances in Figure 8, you must:
• raise the mantel to an acceptable height,
OR • remove the mantel.
Figure 7 - Minimum Mantel Clearances
for Built-In Installation
For
FB32NCA
and
NLFB32NC
Series
noncirculating,
smooth face
models
For
FB32CA
and
NLFB32C
Series
circulating,
louvered
models only
Supplied
Fire
box Hood
Must Be Used
at All Times
Wire-mesh
Screen
Fire
box
Mantel Shelf
13"
16"
19"
21"
19" 20" 21" 22"
For FB32NCA and NLFB32NC
Series noncirculating
smooth face models
2
1
/2
"
6"
8"
10"
For FB32CA and NLFB32C
Series circulating louvered
models only
Facing material
(above firebox)
may be of
combustible
material, including
decorative mantel
ornaments.
Note: All vertical measurements
are from top of fireplace opening
to bottom of mantel shelf. All
measurements are in inches.
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105604-01H10
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.
Conventional Installation of Blower
Accessory
NOTICE: If a log set is currently
installed in the firebox, disconnect
log set from gas supply and remove
from firebox. Contact a qualified
service person to do this.
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 firebox
bottom from the firebox.
WARNING: If there is a duplex
electrical outlet installed in the
right side of the bottom of the
fireplace base area, 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.
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.
3.
Be certain that all wire terminals are securely attached to terminals on blower motor and that the
screw retaining the green ground wire is tight.
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).
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).
INSTALLATION
Continued
Figure 8 - Removing Screws from
Firebox Bottom
Screws
Screws
Blower
Lower Rear Wall
of Firebox
Wrapper
Floor
Supports
Top
Mounting
Tab
Exhaust
Port
Plastic
Hole Plug
Figure 9 - Mounting Blower to Firebox
Figure 10 - Attaching Speed Control
Speed Control
Control Knob
Lock Nut
Control Shaft
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105604-01H 11
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
into the 1
1
/2" hole in the floor support on
the exit side. Install the second plastic
bushing provided 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.
b. If your firebox installation is recessed
and/or pre-wired, see Built-In Installation
of Blower Accessory
, column 2.
8. Turn on power to duplex outlet if previously
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 objects in blower wheel.
Turn blower on and check for operation.
WARNING: Never touch the
blower wheel while in operation.
10. Peel off the backing paper and stick the supplied wiring diagram decal on the firebox
bottom approximately 12" in front of the
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.
13. Install the log set heater according to the instal
-
lation instructions supplied with the heater.
INSTALLATION
Continued
NOTICE: A qualified electrician
must connect electrical wiring to
duplex outlet for built-in installation. Follow all local codes. In
absence of local codes follow
The National Electrical Code
ANSI/NFPA 70.
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.
2. Clamp electrical cable into firebox through
smallest hole in outer casing using strain relief
provided.
3. Route wires from electrical box through hole
in side of heater and hole in support bracket
(see Figure 12).
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.
5. Replace duplex outlet with screw.
6. Plug blower power cord into duplex outlet.
7. Replace bottom of firebox.
Figure 11 - Installing Plastic Bushing for
Power Cord
Plastic
Bushing
Figure 12 - Routing Blower Accessory
Power Cord for Built-In Installation
Screw
Blower
Power Cord
Support Bracket
Cables From
Electrical Source
Duplex
Outlet
Blower
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.
Note: Periodically check the louvers of the firebox
and remove any dust, dirt, or other obstructions.
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105604-01H12
INSTALLING LOG HEATER IN
FIREBOX
CAUTION: Do not remove the
data plates attached to the heater
base assembly. The data plates
contain important warranty and
safety information.
CAUTION: Do not pick up log
base assembly by burners. This
could damage burners. Only
handle base by grates.
1. Remove four screws holding firebox bottom
in place.
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.
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.
5.
Install and properly test gas log heater. Follow
installation instructions included with the ventfree gas log heater that is being installed.
6. Replace firebox bottom and secure with
screws.
INSTALLATION
Continued
Figure 14 - Cutting Brackets
Figure 13 - Removing Firebox Bottom
Cut to
7 1/4"
Length
Heater Base
Firebox
Bottom
Screws
Mounting
Bracket
Screws
INSTALLING FIREPLACE HOOD
NOTICE: The firebox canopy
(hood) must not be modified or
replaced with a canopy (hood) that
may be provided with the unvented
decorative room heater.
1. Attach three zinc-colored shoulder screws to
back of hood.
2. Insert hood into hood-mounting slots on
firebox.
3. Hold hood in place. Insert two black Phillips
screws through bottom of hood and tighten.
Figure 15 - Installing Fireplace Hood
Hood
Hood
Mounting
Slot
Screw
Shoulder
Screw
Page 13
www.desatech.com
105604-01H 13
Electrical
Outlet
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. Insert other rod into front hole on right side of
firebox and fasten using remaining shoulder
screw.
Figure 16 - Installing Fireplace Screen
(Shown Without Fireplace Hood for
Clarity)
Rod
Front and
Rear Hole
Ring
Screen
Screw
INSTALLATION
Continued
FIREBOX INSTALLATION USING
OPTIONAL ACCESSORY MANTELS
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.
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.
1. Assemble cabinet mantel, hearth base, brass
trim, and trim accessories. Assembly instruc
-
tions are included with each accessory.
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).
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 Connecting to
Gas Supply in your log set ownerʼs manual.
NOTICE: A qualified service person must connect firebox to gas
supply. Follow all local codes.
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).
Make sure to locate access hole so cabinet mantel
will cover it when installed. Note: You can secure
base to floor using wood screws. Countersink
screw heads and putty over.
5. Route flexible gas line through access hole in
hearth base.
6.
Center cabinet mantel on hearth base (see Figure
18). Make sure mantel is flush against wall.
Figure 18 - Installing Cabinet Mantel
Cabinet
Mantel
Figure 17 - Placing Hearth Base
Accessory Against Wall
Hearth
Base
Gas Line
Access
Hole
Rigid Pipe and
Gas Shutoff
Valve
Page 14
www.desatech.com
105604-01H14
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.
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.
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.
12.
Install the trim after final finishing and/or
painting of wall. See instructions included with
mantel accessory for attaching brass trim.
13.
Check all gas connections for leaks. See
Checking Gas Connections in log set ownerʼs
manual.
INSTALLATION
Continued
Figure 19 - Location of Nailing Flanges
Nailing
Flanges
Figure 20 - Inserting Firebox Into
Cabinet Mantel
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 7. Follow
the instructions below to install the firebox in
this manner.
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
34
1
/
4
"(FB32NCA and NLFB32NC), which is
the same as the wall opening in Figure 21.
34
3
/
4
"
17
3
/
4
"
33" (FB32CA and
NLFB32CA)
34
1
/
4
" (FB32NCA and
NLFB32NCA)
Figure 21 - Rough Opening for Installing
in Wall
39
3
/8
"
27
7
/8
"
55
5
/8
"
34
3
/4
"
Figure 22 - Rough Opening for Installing
in Corner
Page 15
www.desatech.com
105604-01H 15
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. 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.
4. If using GA3700 blower accessory (Models
FB32CA and NLFB32C only), see
Installing
Blower Accessory for built-in installation,
page 11.
5. Attach flexible gas line to log set. See
Con-
necting to Gas Supply in log set ownerʼs
manual.
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).
8. Check all gas connections for leaks. See
Checking Gas Connections in log set ownerʼs
manual.
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.
INSTALLATION
Continued
Nailing
Flanges
Nails or
Wood
Screws
Figure 23 - Attaching Firebox to Wall
Studs
Height Front Width
Model # Actual Framing Actual Framing
FB32CA 32
3
/
16
" 33" 34
3
/
8
" 34
3
/
4
"
NLFB32C 32
3
/
16
" 33" 34
3
/
8
" 34
3
/
4
"
FB32NCA 33
11
/
16
34
1
/
4
" 34
3
/
8
" 34
3
/
4
"
NLFB32NC 33
11
/
16
" 34
1
/
4
" 34
3
/
8
" 34
3
/
4
"
Depth
Model # Actual Framing
FB32CA 16
11
/
16
" 17
3
/
4
"
NLFB32C 16
11
/
16
" 17
3
/
4
"
FB32NCA 16
11
/
16
" 17
3
/
4
"
NLFB32NC 16
11
/
16
" 17
3
/
4
"
REPLACEMENT PARTS
Note: Use only original replacement parts. This
will protect your warranty coverage for parts
replaced under warranty.
PARTS UNDER WARRANTY
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.
When calling DESA Heating Products, have
ready
• your name
• your address
• model and serial numbers of your firebox
• how firebox was malfunctioning
• type of gas used (propane/LP or natural gas)
• purchase date
Usually, we will ask you to return the part to the
factory.
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
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.
You can also visit DESA Heating Productsʼ Techni
-
cal Service web site at www.desatech.com.
Page 16
www.desatech.com
105604-01H16
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"
NPT tap.
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.
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, moldings, fluting and medallion.
Dimensions (WxHxD):
56" x 50" x 24
"
CABINET MANTEL
GMC11F Series - Walnut Finished
GMC12U Series - Unfinished
GMC13F Series - Oak Veneer Finished
GM102W Series - Off White
All models. Shown with optional base and laminate hearth and mantel trim accessories. Dimen
-
sions (WxHxD): 56 3/4" x 48" x 22 3/4"
CORNER MANTEL
GMC36F Series - Walnut Finished
GMC37U Series - Unfinished
GM202F Series - Oak Finished
GMC93F Series - Oak Finished with
Columns
All models. Shown with optional laminate mantel
trim accessory.
Dimensions (WxHxD): 60 7/8" x 48 3/4" x 34 5/8"
HARDWOOD CORNER HEARTH
BASE - (Not Shown)
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
or face mantel).Dimensions (WxHxD): 52 1/2" x
6 1/2" x 26"
Page 17
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105604-01H 17
ACCESSORIES
Continued
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).
Dimensions (WxHxD): 58" x 6 1/2" x 28 9/16"
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.
PERIMETER TRIM ACCESSORY
(Not Shown)
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.
BRASS HOOD ACCESSORY - GA6096
(Not Shown)
All models. Decorative polished brass hood enhances the appearance of the firebox.
Page 18
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105604-01H18
ILLUSTRATED PARTS BREAKDOWN
MODELS
FB32NCA AND NLFB32NC
5
14
16
16
16
13
15
17
17
17
16
6
1
7
16
18
10
8
20
12
19
9
4*
2*
3*
2*
16
11
18
Page 19
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105604-01H 19
KEY PART NUMBER
NO. FB32NCA NLFB32NC DESCRIPTION QTY.
1 101872-03 101872-03 Firebox Top 1
2 101889-01 * Firebrick Retainer 3
3 101929-04 * Rear Firebrick 1
4 101932-04 * Side Firebrick 2
5 103207-01 103207-01 Outer Casing 1
6 103208-01 103208-01 Outer Shell Base 1
7 ** ** Firebox Wrapper 1
8 103297-01 103297-01 Assembly Screen 2
9 103217-01CK 103217-01CK Hood 1
10 103773-02 103773-02 Front Assembly 1
11 ** ** Firebox Bottom 1
12 103809-01 103809-01 Screen Rod 2
13 103816-01 103816-01 Firebox Insulation 1
14 101348-01 101348-01 Firebox Support 2
15 101357-03 101357-03 Outer Casing Top 1
16 M11084-26
____
Hex Head Screw, #10-16 49
____
M11084-26 Hex Head Screw, #10-16 46
17 098194-02 098194-02 Stand Off 3
18 098304-01 098304-01 Phillips Pan Head Screw, #10 11
19 099230-01 099230-01 Hex Head Screw 3
20 099230-02 099230-02 Shoulder Screw 2
*Not Included with Model NLFB32NC
** Not available for field replacement.
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.
Page 20
www.desatech.com
105604-01H20
ILLUSTRATED PARTS BREAKDOWN
MODELS
FB32CA AND NLFB32C
5
16
16
15
16
17
22
6
1
16
7
16
14
21
13
18
10
8
20
12
19
9
4*
2*
3*
2*
16
11
18
18
Page 21
www.desatech.com
105604-01H 21
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 PART NUMBER
NO. FB32CA NLFB32C DESCRIPTION QTY.
1 101872-03 101872-03 Firebox Top 1
2 101889-01 * Firebrick Retainer 3
3 101929-04 * Rear Firebrick 1
4 101932-04 * Side Firebrick 2
5 103207-01 103207-01 Outer Casing 1
6 103208-01 103208-01 Outer Shell Base 1
7 ** ** Firebox Wrapper 1
8 103297-01 103297-01 Assembly Screen 2
9 103217-01CK 103217-01CK Hood 1
10 103773-01 103773-01 Front Assembly 1
11 ** ** Firebox Bottom 1
12 103809-01 103809-01 Screen Rod 2
13 M12461-2 M12461-2 Screw, Outlet Mounting 1
14 101348-01 101348-01 Firebox Support 2
15 101357-01 101357-01 Outer Casing Top 1
16 M11084-26
____
Hex Head Screw, #10-16 49
____
M11084-26 Hex Head Screw, #10-16 46
17 103771-01 103771-01 Strain Relief Fitting 1
18 098304-01 098304-01 Phillips Pan Head Screw, #10 13
19 099230-01 099230-01 Hex Head Screw 3
20 099230-02 099230-02 Shoulder Screw 2
21 GA3555 GA3555 Duplex Outlet 1
22 103457-01 103457-01 Button Plug 1
*Not Included with Model NLFB32C
** Not available for field replacement.
Page 22
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105604-01H22
NOTES
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Page 23
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105604-01H 23
NOTES
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Page 24
2701 Industrial Drive
P.O. Box 90004
Bowling Green, KY 42102-9004
www.desatech.com
105604-01
Rev. H
07/04
NOT A UPC
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 EXTENT ALLOWED BY THE LAW OF THE JURISDICTION THAT GOVERNS THE SALE OF
THE PRODUCT; THIS EXPRESS WARRANTY EXCLUDES ANY AND ALL OTHER EXPRESSED WARRAN
TIES AND LIMITS THE DURATION 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 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:
105604 01
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