Desa FB32C Quick start guide

Shown with optional

cabinet mantel, hearth

base, brass trim, and

marble trim accessories.

Save this manual for future reference.

WARNING:Iftheinformationinthismanualisnotfollowed

exactly, a fire or explosion may result causing property

damage, personal injury, or loss of life.

— Donotstoreorusegasolineorotherflammablevapors

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.

• Immediatelycallyourgassupplierfromaneighbor’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 quali-

fied installer, service agency, or the gas supplier.

WARNING: Improper installa-

tion, adjustment, alteration, ser-

vice, or maintenance can cause

injury or property damage. Re-

fer to this manual for correct

installation and operational pro-

cedures.For assistance oraddi-

tionalinformationconsultaquali-

fied installer, service agency, or

the gas supplier.

WARNING: The FB32C and

FB32NCFireboxesaretobeused

only with certain vent-free gas

log heaters (see Table 1). Do not

burn wood or other materials in

these fireboxes.

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).

UNVENTED (VENT-FREE)

LogMate II™FIREBOX

FB32C (shown)

Circulating

Louvered and

FB32NC

Noncirculating

Smooth Face

Models

OWNER’S

OPERATION

AND

INSTALLATION

MANUAL

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103296

CONTENTS SECTION PAGE

SAFETY

INFORMATION

WARNINGICON G001

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, and carbon monoxide poisoning.

Safety Information..........................................................................................................2

Product Specifications ....................................................................................................4

Local Codes ....................................................................................................................5

Unpacking.......................................................................................................................5

Product Features .............................................................................................................6

Locating Firebox ............................................................................................................6

Air for Combustion and Ventilation...............................................................................6

Installing .......................................................................................................................10

Installation Clearances ..........................................................................................10

Installing Blower Accessory .................................................................................12

Installing Log Heater in Firebox ...........................................................................13

Installing Fireplace Hood ......................................................................................14

Installing Fireplace Screen ....................................................................................14

Firebox Installation Using Optional Accessory Mantels ......................................15

Built-In Firebox Installation ..................................................................................17

Technical Service .........................................................................................................19

Replacement Parts ........................................................................................................19

Accessories ...................................................................................................................20

Illustrated Parts Lists .............................................................................................. 22-25

Warranty Information ....................................................................................Back Cover

For use with vent-free gas log heater models:

VANGUARD®COMFORT FLAME®

TABLE 1

VL18N/P

VL18NT(A)/PT(A)

VL18NV/PV

VL24N/P

VL24NT(A)/PT(A)

VL24NV/PV

VS24NV(A,B)

VS24PV(A,B)

VS18NR/PR

VS18NV(B)/PV(B)

VS24NR/PR

VYS18N/P

VYS24N/P

VYD18N/P

VYD24N/P

VYBD18N/P

VYBD24N/P

VS24NTA

VS24PTA

VS18NTA

VS18PTA

VLH26N

VLH22P

VLH39N

VLH31P

CF18N

CF18P

CF18NT(A)

CF18PT(A)

CF24N

CF24P

CF24NT(A)

CF24PT(A)

CFS24NV(A,B)

CFS24PV(A,B)

CFS18NV(B)

CFS18PV(B)

CFYS18N

CFYS18P

CFYS24N

CFYS24P

CFLH26N

CFLH22P

CFLH39N

CFLH31P

103296

SAFETY

INFORMATION

Continued

WARNING ICON G 001

WARNINGS

Continued

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 the logs speci-

fied in Table 1, page 2.

4. Do not add extra logs or ornaments such as pine cones, vermiculite, or rock

wool. Using these added items can cause sooting.

5. You must operate this fireplace with the fireplace screen, hood, and brick liner

in place. Make sure these parts are in place before running firebox.

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 heater. Do not use blower accessory with Model

FB32NC.

8. Vent-free gas log heaters installed in these fireboxes require fresh air ventilation

to run properly. See Air for Combustion and Ventilation, pages 6 through 9.

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 front and screen 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 shut-down. Allow 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 firebox above elevations of 4,500 feet could cause pilot outage.

103296

35 1/16"

31 3/4"

16 1/4"

2 3/4"

6 3/8"

19 3/8"

12 1/2"

2 3/4"

1 1/2"

9 3/4"

4 5/8"

2 1/2"

32 3/16"

33 11/16"

PRODUCT

SPECIFICATIONS

Figure 1 - Firebox Front View

Figure 2 - Firebox Side View

Standoffs

(Model FB32NC only)

Electrical

Access Hole Electrical Access

Hole with Bushing Gas Line Access

Built-in

Nailing

Flanges

Standoffs (Model FB32NC only)

Louvers

(Model FB32C only)

103296

LOCAL CODES Install and use fireplace with care. Follow all local codes. In the absence of local

codes, use the latest edition of The National Fuel Gas Code ANSI Z223.1, also

known as 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. Cut banding along lower edge of carton. Unfold bottom flaps and lift upper

carton off of firebox. Pull carton away and discard.

2. Check carton contents for the following:

Screen assembly

Screen support rod

Hood

Hardware and parts bag containing the following:

Owners Operation and Installation Manual

Flexible gas connector

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 firebox.

3. Check all items for any shipping damage. If damaged, promptly inform dealer

where you bought firebox.

22 1/2"

16 1/2"

31 5/8"

34 3/8"

35 5/8"

19 1/4"

PRODUCT

SPECIFICATIONS

Continued

Figure 3 - Firebox Side View

103296

WARNING ICON G 001

WARNING

This firebox shall not be installed in a confined space 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, fireboxs, 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.

PRODUCT

FEATURES

Operation

ThisfireboxisdesignedtoacceptallgaslogheaterslistedinTable1,page2.Itrequires

no outside venting or chimney making installation easy and inexpensive. When used

without the blower (model FB32C only), the firebox requires no electricity making it

ideal for emergency back-up heat.

Blower Accessory

The FB32C 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.

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 10).

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 below).

AIR FOR

COMBUSTION

AND

VENTILATION

103296

AIR FOR

COMBUSTION

AND

VENTILATION

Continued

PROVIDING ADEQUATE VENTILATION

The following is exerpts from National Fuel Gas Code. NFPA 54/ANSI 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 Contruction; 2. Unconfined Space; 3. Confined Space.

The information on pages 6 through 9 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.

Unusually tight construction is defined as construction where:

a. walls and ceilings exposed to the outside atmosphere have a continu-

ous water vapor retarder with a rating of one perm or less with open-

ings 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 addi-

tional fresh air. See

Ventilation Air From Outdoors

, page 9

If your home does not meet all of the three criteria above, proceed to page 8.

Unconfined Space

The National Fuel Gas Code, ANSIZ223.1, 1992, Section 5.3 defines unconfined

space as having a minimum air volume of 50 cubic feet (127 cubic cm) for each

1000 Btu/Hr input rating of all appliances in the space (cubic feet equals length

x width x height of space). Include adjoining rooms only if there are doorless

passageways or ventilation grills between the rooms.

Confined Space

The National Fuel Gas Code, ANSIZ223.1, 1992, Section 5.3 defines confined

space as having an air volume of less than 50 cubic feet (127 cubic cm) for each

1000 Btu/Hr input rating of all appliances in the space (cubic feet equals length

x width x height of space). Include adjoining rooms only if there are doorless

passageways or ventilation grills between the rooms.

Continued

103296

DETERMINING 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 size 22 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.

____________ (volumeofspace)÷50cu.ft.=(MaximumBtu/Hrthespacecansupport)

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.

Vent-free firebox ___________________ Btu/Hr

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

Example:

Gas water heater 40,000 Btu/Hr

Vent-free firebox with log heater +39,000 Btu/Hr

Total =79,000 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 work sheet, adding the space of an adjoining room. If the extra space pro-

vides an unconfined space, remove door to adjoining room or add ventilation grills

between rooms. See Ventilation Air from Inside Building, page 9.

B. Vent room directly to the outdoors. See Ventilation Air from Outdoors, page 9.

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 ICON G 001

WARNING

If the area in which the firebox and gas log heater may be oper-

ated is smaller than that defined as an unconfined space, provide

adequate combustion and ventilation air by one of the methods

described in the

National Fuel Gas Code, ANSI Z223.1, 1992,

Section 5.3.

AIR FOR

COMBUSTION

AND

VENTILATION

Continued

103296

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

adjoiningunconfinedspace,youmustprovidetwopermanentopenings:onewithin12"ofthe

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 NFPA 54/ANSI Z223.1, Section 5.3, Air for Combustion

and Ventilation for required size of ventilation grills or ducts.

WARNING ICON G 001

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.

Figure 5 - Ventilation Air from Outdoors

Ventilation Air From Outdoors

Provide extra fresh air by using ventilation grills or ducts. You must provide two perma-

nent 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:

Do not provide openings for inlet or outlet air into attic if attic has a

thermostat-controlled power vent. Heated air entering the attic will activate the power

vent.

Figure 4 - Ventilation Air from Inside Building

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Remove

Door into

Adjoining

Room,

Option

Ventilation Grills

Into Adjoining Room,

Option 2

Ventilation

Grills

Into Adjoining

Room,

Option 1

12"

Outlet

Air Ventilated

Attic

Outlet

Air

Inlet

Air

Inlet Air Ventilated

Crawl Space

Crawl

Space

To Attic

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103296

INSTALLATION CLEARANCES

WARNING ICON G 001

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 Wall and Ceiling Clearances (see Figure 6, page 11)

A. Clearancesfromthesideofthefireboxopeningtoanycombustiblewallshouldnot

be less than 16 inches for a cabinet mantel or 12 inches for a corner installation.

B. Clearances from the top of the firebox opening to the ceiling should not be less

than 42 inches.

INSTALLING NOTICE

A qualified service person must install firebox. Follow all local

codes.

WARNING ICON G 001

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 36 inches from the front, top, or sides

of the firebox

• in high traffic areas

• in windy or drafty areas

WARNING ICON G 001

CAUTION

Log heaters installed in this firebox create warm air currents.

These currents move heat to wall surfaces next to firebox. Install-

ing firebox next to vinyl or cloth wall coverings or operating

firebox where impurities in the air (such as tobacco smoke) exist,

may discolor walls.

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,

pages 6 through 9.

IMPORTANT:

Make sure the firebox is level. If firebox is not level, log set will not

work properly.

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