Vanguard Heating NLFB32NC, FB32CA, FB32NCA, NLFB32C User Manual
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 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.
Save this manual for future reference.
For more information, visit www.desatech.com
WARNING: Improper installation, adjustment, alteration, service, or maintenance can cause injury or property damage. Refer to this manual for correct installation
and operational procedures. For assistance or additional information consult a qualified installer, service
agency, or the gas supplier.
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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105604-01H2
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 serious 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.
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.
-
WARNING: Do not use a blower insert, hood, heat exchanger
insert, or other accessory not approved 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.
105604-01H 3
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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.
SAFETY INFORMATION
351/16"
313/4"
161/4"
11/4"
23/4"
23/4"
63/8"
193/8"
37/8"
63/4"
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.
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.
Provide adequate clearances around air
11.
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.
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
Built-in Nailing
Flanges
-
Louvers (Models FB32CA
and NLFB32C only)
Figure 1 - Firebox Front View
-
Standoffs (Models
FB32NCA and
NLFB32NC only)
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105604-01H4
121/2"
23/4"
11/2"
93/4"
45/8"
21/2"
6"
323/16"
3311/16"
221/2"
1611/16"
131/4"
*
141/4"
*
315/8"
343/8"
355/8"
191/4"
PRODUCT
SPECIFICATIONS
Continued
Standoffs (Models FB32NCA
and NLFB32NC only)
Electrical
Access Hole
Figure 2 - Firebox Side View
Electrical
Access Hole
with Bushing
Gas Line
Access
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
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).
Installation
1
*Note: 14
including brick liner. 13
floor including brick liner.
105604-01H 5
4
/
" is total firebox cavity depth
1
4
/
" is depth of flat
Figure 3 - Firebox Top View
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AIR FOR COMBUSTION
AND VENTILATION
WARNING: This firebox shall
not be installed in a confined
space or unusually tight construction unless provisions are provided for adequate combustion and
ventilation air. Read the following
instructions to insure proper fresh
air for this and other fuel-burning
appliances in your home.
Todayʼs homes are built more energy efficient
than ever. New materials, increased insulation, and
new construction methods help reduce heat loss in
homes. Home owners weather strip and caulk around
windows and doors to keep the cold air out and the
warm air in. During heating months, home owners
want their homes as airtight as possible.
While it is good to make your home energy effi
cient, your home needs to breathe. Fresh air must
enter your home. All fuel-burning appliances need
fresh air for proper combustion and ventilation.
Exhaust fans, fireboxes, clothes dryers, and fuel
burning appliances draw air from the house to
operate. You must provide adequate fresh air for
these appliances. This will insure proper venting
of vented fuel-burning appliances.
PROVIDING ADEQUATE
VENTILATION
The following are excerpts from National Fuel
Gas Code ANSI Z223.1/NFPA 54, Section 5.3, Air
for Combustion and Ventilation.
All spaces in homes fall into one of the three fol
lowing ventilation classifications:
1. Unusually Tight Construction
2. Unconfined Space
3. Confined Space
The information on 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
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 Determining 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.
-
-11
kg per pa-sec-m2) or
-
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105604-01H6
AIR FOR COMBUSTION
AND VENTILATION
Continued
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 ________
Gas water heater* ________
Gas furnace ________
Vented gas heater ________
Gas fireplace logs ________
Other gas appliances* + ________
Total = ________
* Do not include direct-vent gas appliances.
Direct-vent draws combustion air from the
outdoors and vents to the outdoors.
Example:
Gas water heater ________
Vent-free heater + ________
Total = ________
40,000
39,000
79,000
Btu/Hr
Btu/Hr
Btu/Hr
Btu/Hr
Btu/Hr
Btu/Hr
Btu/Hr
Btu/Hr
Btu/Hr
Btu/Hr
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 ,2 00 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.
Rew ork worksh eet, adding the space of an
adjoining room. If the extra space provides an
unconfined space, remove door to adjoining
room or add ventilation grills between rooms. See
Ventilation Air From Inside Building
B. Vent room directly to the outdoors. See Ven-
tilation Air From Outdoors
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.
, page 8.
, page 8
.
WARNING: If the area in
which the firebox and gas log
heater may be operat ed 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.
105604-01H 7
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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
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.
Figure 4 - Ventilation Air from Inside
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 5 - Ventilation Air from Outdoors
Building
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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
105604-01H8
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