Desa FBPS User Manual

®

UNVENTED (VENT-FREE)

LogMate® UNIVERSAL FIREBOX

OWNER’S OPERATION AND INSTALLATION MANUAL

®

Model FBPS

36" Peninsula Heat-Circulating Firebox

WARNING: If the information in this manual is not
followed exactly, a fire or explosion may result
causing property damage, personal injury, or loss
of life.

— Do not store or use gasoline or other flammable
vapors and liquids in the vicinity of this or any other
appliance.

— WHAT TO DO IF YOU SMELL GAS

• Do not try to light any appliance.

• Do not touch any electrical switch; do not use any
phone in your building.

• Immediately call your gas supplier from a
neighbor’s phone. Follow the gas supplier’s in­structions.

• If you cannot reach your gas supplier, call the fire
department.

— Installation and service must be performed by a
qualified installer, service agency, or the gas supplier.

WARNING: Improper installa­tion, adjustment, alteration,
service, or maintenance can
cause injury or property dam­age. Refer to this manual for
correct installation and opera­tional procedures. For assis­tance or additional informa­tion consult a qualified in­staller, service agency, or the
gas supplier.

WARNING: For use only with
decorative type unvented room
heaters. Do not build a wood fire.

This firebox has been tested and
approved by I.A.S. under their
REQ. 2-97 for use with any ANS
Z21.11.2 approved gas logs.

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).

Save this manual for future reference.

®

UNVENTED (VENT-FREE) LOGMATE® FIREBOX

SAFETY
INFORMA TION

WARNINGS

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 death from burns,
fire, explosion, electrical shock, or
carbon monoxide poisoning.

CAUTION: Carefully review
the instructions supplied with the
decorative type unvented room
heater for the minimum firebox
size requirement. Do not install
the appliance in this firebox un­less this firebox meets the mini­mum dimensions required for the
installation.

WARNING: Any change to
this firebox or its controls can be
dangerous.

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 36 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.

5. Y ou must operate this fireplace with the
provided fireplace screens, hoods, and
brick liners in place. Make sure these
parts are in place and screens are closed
before running firebox. The supplied
hoods may not be replaced with hoods
which may be provided with a log heater .

6. 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.

7. Do not use a blower insert, heat ex­changer insert or other accessory not
approved for use with this firebox. Use
only the provided hoods, or appropri­ate polished brass hood accessories. See
Accessories on page 15.

8. V ent-free gas log heaters installed in this
firebox require fresh air ventilation to
run properly. See Air for Combustion
and Ventilation, pages 4 through 6.

9. Do not run firebox

• where flammable liquids or vapors

are used or stored

• under dusty conditions

10. Do not use this firebox to cook food or
burn paper or other objects.

11. Never place any objects in the firebox
or on logs.

12. Firebox fronts and screens becomes
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. Allo w surfaces to cool
before touching.

13. Carefully supervise young children
when they are in the room with firebox.

14. Turn firebox off and let cool before
servicing. Only a qualified service per­son should service and repair firebox.

15. Operating vent-free logs above eleva­tions of 4,500 feet could cause pilot
outage.

16. 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.

LOCAL CODES

Install and use firebox with care. Follow all
local codes. In the absence of local codes, use
the latest edition of The National Fuel Gas
Code ANS Z223.1, also known as NFPA 54*.
Firebox must be electrically grounded in
accordance with the National Electrical Code,
ANS/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. Remove all protective packaging from
inside firebox. Carefully lift the fire­box off the bottom corrugated tray.

2. Carton should contain 3 deflective
hoods and hardware packet in addition
to firebox assembly. If items are miss­ing, inform dealer where you bought
firebox.

3. Check all items for any shipping dam­age. If damaged, promptly inform
dealer where you bought firebox.

NOTICE: The firebox identifica­tion label (including model num­ber, serial number, clearances,
etc.) is located directly above the
brick liner and under the heat
shield. See Figure 20, page 14.

2

105163

OWNER’S MANUAL

PRODUCT
FEATURES

OPERATION

This firebox is designed for use with ap­proved ANS Z21.11.2 decorative type
unvented multisided room heaters. (Physi­cal size limitations apply. Refer to mini­mum firebox requirements supplied with
log heater.) The maximum size log this
firebox will accept is: width of 32", depth of
19", and height of 17".

This firebox requires no outside venting or
chimney making installation easy and inex­pensive. When used without the blower, the
firebox requires no electricity making it
ideal for emergency backup heat.

BLOWER ACCESSORY

The FBPS firebox will accept the GA3500A
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.

BRICK LINER

PRODUCT
SPECIFICATIONS

1 1/4"

1/2"

24"

5/8"

3

/4"

1

4"

36 1/4"

(Edge of
Brick Liner)

3" TYP.

18 1/2"

4 1/2"

4 3/4"33 3/4"

4"

5

3

/8"

4"

19 1/2"

40"

This firebox features a concrete brick liner.
As with all concrete liners, this liner may
develop slight cracks when exposed to heat.
These cracks will not affect the perfor­mance of the firebox or vent-free gas logs.

1

9

/8"

36 1/2"

42 1/2"

Figure 1 - Peninsula (Three-Sided) Firebox

1 1/2"

105163

3

®

UNVENTED (VENT-FREE) LOGMATE® FIREBOX

LOCATING
FIREBOX

Planning

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 7).

2. Everything needed to complete instal­lation.

3. These models CANNOT be installed
in a bedroom or bathroom.

4. Proper air for combustion and ventila­tion.

5. Consider a location where heat output
would not be affected by drafts, air con­dition ducts, windows or doors.

6. A location that minimizes modifica­tions on existing framing will make
installation easier.

Projected installations can extend
any distance into the room. A projection
may be ideal as a partition between two
otherwise common areas when added to
an existing, finished wall (see Figure 2).
Optional GT109U firebox top is avail­able (see Accessories, page 15).

Internal wall installation provides
a discreet viewing option between two
adjacent rooms or within an added wall
to subdivide an oversize room.

Figure 2 - Projected Installation

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.

Today’s 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
efficient, 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 fuel­burning appliances.

PROVIDING ADEQUATE
VENTILATION

The following are excerpts from National
Fuel Gas Code. NFPA 54/ANS Z223.1, Sec­tion 5.3, Air for Combustion and Ventilation.

All spaces in homes fall into one of the three
following ventilation classifications:

1. Unusually Tight Construction

2. Unconfined Space

3. Confined Space
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 win­dows may provide enough fresh air for
combustion and ventilation. However, in
buildings of unusually tight construction,
you must provide additional fresh air.

4

Unusually tight construction is de­fined as construction where:

a. walls and ceilings exposed to the

outside atmosphere have a con­tinuous water vapor retarder with
a rating of one perm (6 x 10
per pa-sec-m2) or less with open­ings gasketed or sealed

b. weather stripping has been

added on openable windows and
doors

c. caulking or sealants are applied

to areas such as joints around
window and door frames, be­tween sole plates and floors, be­tween wall-ceiling joints, be­tween wall panels, at penetra­tions for plumbing, electrical, and
gas lines, and at other openings.

If your home meets all of the three
criteria above, you must provide ad­ditional fresh air. See

From Outdoors

If your home does not meet all of the
three criteria above, proceed to

and

Ventilation Air

, page 6.

-11

and

Deter-

kg

mining Fresh-Air Flow for Firebox
Location,

page 5.

Confined and Unconfined Space

The National Fuel Gas Code (ANS Z223.1,
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
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.

This heater shall not be installed in a con­fined space or unusually tight construction
unless provisions are provided for adequate
combustion and ventilation air.

* Adjoining rooms are communicating only
if there are doorless passageways or ventila­tion grills between them.

105163

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:

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:

3. Add the Btu/Hr of all fuel burning appliances in the space.
Gas water heater* _______________ Btu/Hr
Gas furnace _______________ Btu/Hr
Vented gas heater _______________ Btu/Hr
Gas firebox 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.

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:

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 work sheet, adding the space of an adjoining room. If the extra space provides an unconfined space, remove door to adjoin-

ing 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 gas log 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.

Space size 22 ft. (length) x 18 ft. (width) x 8 ft. (ceiling height) = 3168 cu. ft. (volume of space)

3168 cu. ft. (volume of space) ÷ 50 cu. ft. = 63.3 or 63,300 (maximum Btu/Hr the space can support)

Example:

Gas water heater 40,000 Btu/Hr
Gas firebox logs + 39,000 Btu/Hr

Total = 79,000 Btu/Hr

63,300 Btu/Hr (maximum the space can support)
79,000 Btu/Hr (actual amount of Btu/Hr used)

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
applicable local codes.

105163

National Fuel Gas Code, ANS Z223.1, 1992, Section 5.3

Continued

5

or

®

UNVENTED (VENT-FREE) LOGMATE® FIREBOX

AIR FOR
COMBUSTION AND
VENTILATION

Continued

VENTILATION AIR

Ventilation Air From Inside
Building

This fresh air would come from an adjoining
unconfined 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 option 1, Figure 3). You can also re­move door into adjoining room (see option
2, Figure 3). Follow the National Fuel Gas

Code NFPA 54/ANS Z223.1, Section 5.3,
Air for Combustion and Ventilation for re-

quired size of ventilation grills or ducts.

WARNING: Rework work­sheet, adding the space of the
adjoining unconfined space. The
combined spaces must have
enough fresh air to supply all
appliances in both spaces.

Ventilation

Grills

Into Adjoining

Room,

Option 1

Figure 3 - Ventilation Air from Inside Building

Or

Remove
Door into
Adjoining

Room,
Option

2

Outlet
Air

Ventilated
Attic

4"

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.

IMPORTANT:

inlet or outlet air into attic if attic has a
thermostat-controlled power vent. Heated air
entering the attic will activate the power vent.

Do not provide openings for

Outlet
Air

Inlet
Air

Inlet Air

Figure 4 - Ventilation Air from Outdoors

Crawl Space

To Attic

To

Crawl

Space

Ventilated

6

105163