Desa FB32C User Manual

UNVENTED (VENT -FREE)

™

LogMate II

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).

FIREBOX

OWNER’S

FB32C (shown)

Circulating

OPERATION

AND

INSTALLATION

MANUAL

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.

Save this manual for future reference.

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: The FB32C and FB32NC Fireboxes are to be used only with certain vent-free gas log heaters (see Table 1). Do not burn wood or other materials in these fireboxes.

Louvered and

FB32NC

Noncirculating

Smooth Face

Models

Shown with optional cabinet mantel, hearth base, brass trim, and marble trim accessories.

CONTENTS

SECTION PAGE

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

SAFETY

INFORMATION

W ARNINGS

WARNING ICON G 001

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.

TABLE 1

For use with vent-free gas log heater models:

VANGUARD

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

COMFORT FLAME

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

W ARNINGS

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 specified 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.

Continued

103296

PRODUCT

SPECIFICATIONS

Standoffs (Model FB32NC only)

35 1/16"

2 3/4"

Built-in Nailing

Flanges

Louvers

(Model FB32C only)

19 3/8"

16 1/4"

31 3/4"

2 3/4"

6 3/8"

Figure 1 - Firebox Front View

Standoffs

(Model FB32NC only)

2 3/4"

1 1/2"

33 11/16"

32 3/16"

12 1/2"

9 3/4"

4 5/8"

2 1/2"

Electrical

Access Hole

Figure 2 - Firebox Side View

Electrical Access

Hole with Bushing

Gas Line Access

103296

PRODUCT

SPECIFICATIONS

Continued

22 1/2"

16 1/2"

19 1/4"

31 5/8" 34 3/8" 35 5/8"

Figure 3 - Firebox Side View

LOCAL CODES

UNPACKING

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

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.

103296

PRODUCT

FEATURES

Operation

This firebox is designed to accept all gas log heaters listed in Table 1, page 2. It requires 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

AIR FOR

COMBUSTION

AND

VENTILATION

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).

W ARNING

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.

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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 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

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

Ventilation Air From Outdoors

and

, page 9

and

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

AIR FOR

COMBUSTION

AND

VENTILATION

Continued

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:

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.

Example:

* 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 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.

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)

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

Gas water heater 40,000 Btu/Hr Vent-free firebox with log heater + 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)

W ARNING

If the area in which the firebox and gas log heater may be operated is smaller than that defined as an unconfined space, provide adequate combustion and ventilation air by one of the methods described in the

Section 5.3.

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

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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 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.

W ARNING

Rework worksheet, adding the space of the adjoining unconfined space. appliances in both spaces.

The combined spaces must have enough fresh air to supply all

12"

Ventilation

Grills

Into Adjoining

Room,

Option 1

Remove Door into Adjoining

Room, Option

12"

Ventilation Grills

Into Adjoining Room,

Option 2

Figure 4 - Ventilation Air from Inside Building

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:

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

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

103296

Outlet Air

Inlet Air

Ventilated Attic

Ventilated

Crawl Space

Figure 5 - Ventilation Air from Outdoors

To Attic

Crawl

Space

+ 19 hidden pages