UNVENTED (VENT-FREE) NATURAL GAS LOG … Logs/model_AVFN18MV_manual...UNVENTED (VENT-FREE) NATURAL...

UNVENTED (VENT-FREE)NATURAL GAS LOG HEATER

ALSO DESIGN-CERTIFIED AS A VENTED DECORATIVE APPLIANCEOWNER’S OPERATION AND INSTALLATION MANUAL

Save this manual for future reference.

WARNING: If the information in thismanual is not followed exactly, a fire orexplosion may result causing propertydamage, personal injury, or loss of life.— Do not store or use gasoline or other

flammable vapors and liquids in thevicinity 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. Followthe gas supplier’s instructions.

• If you cannot reach your gas sup-plier, call the fire department.

— Installation and service must be per-formed by a qualified installer, ser-vice agency, or the gas supplier.

WARNING: Improper installation, ad-justment, alteration, service, or main-tenance can cause injury or propertydamage. Refer to this manual for cor-rect installation and operational pro-cedures. For assistance or additionalinformation consult a qualified installer,service agency, or the gas supplier.

VFN18MV,VFN24MVVFN30MV

Variable Manually-Controlled

LO

PILOT

OFF

HI

EMBER MASTER™

WARNING: This is an unvented gas-fired heater. It uses air (oxygen) from the room inwhich it is installed. Provisions for adequate combustion and ventilation air must beprovided. Refer to Air for Combustion and Ventilation section on page 4 of this manual.

WARNING: This appliance is for installa-tion only in a solid-fuel burning masonryor UL127 factory-built fireplace, or in anapproved ventless firebox. It is design-certified for these installations in accor-dance with ANS Z21.11.2. Exceptions:Do not install this appliance in a factory-built fireplace that includes instructionsstating it has not been tested or shouldnot be used with unvented gas logs.

* Aftermarket: Completion of sale, not for purpose of resale, from the manufacturer

This appliance may be installed in an aftermarket*, permanently located, manufac-tured (mobile) home, where not prohibited by local codes.This appliance is only for use with the type of gas indicated on the rating plate. Thisappliance is not convertible for use with other gases.

2 105070

FIREPLACE MANUFACTURERS INCORPORATEDUNVENTED NATURAL GAS LOG HEATER

1. This appliance is only for use with thetype of gas indicated on the rating plate.This appliance is not convertible for usewith other gases.

2. If you smell gas• shut off gas supply• 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 thegas supplier’s instructions

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

3. This heater shall not be installed in abedroom or bathroom, unless installedas a vented appliance (see InstallingDamper Clamp Accessory for VentedOperation, page 10).

SAFETYINFORMATION

DANGER: Carbon monoxidepoisoning may lead to death!

Carbon Monoxide Poisoning: Early signsof carbon monoxide poisoning resemble theflu, with headaches, dizziness, or nausea. Ifyou have these signs, the heater may not beworking properly. Get fresh air at once!Have heater serviced. Some people are moreaffected by carbon monoxide than others. Theseinclude pregnant women, people with heart orlung disease or anemia, those under the influ-ence of alcohol, and those at high altitudes.

Natural Gas: Natural gas is odorless. Anodor-making agent is added to the gas. Theodor helps you detect a gas leak. However,the odor added to the gas can fade. Gas maybe present even though no odor exists.

Make certain you read and understand all warn-ings. Keep this manual for reference. It is yourguide to safe and proper operation of this heater.

WARNINGS

IMPORTANT: Read this owner’smanual carefully and completelybefore trying to assemble, oper-ate, or service this heater. Im-proper use of this heater can causeserious injury or death from burns,fire, explosion, electrical shock,and carbon monoxide poisoning.

4. Before installing in a solid fuel burn-ing fireplace, the chimney flue and fire-box must be cleaned of soot, creosote,ashes, and loose paint by a qualifiedchimney cleaner. Creosote will igniteif highly heated. Inspect chimney fluefor damage. If damaged, operate heaterwith flue damper closed.

5. If fireplace has glass doors, never op-erate this heater with glass doors closed.If you operate heater with doors closed,heat buildup inside fireplace will causeglass to burst. Also if fireplace open-ing has vents at the bottom, you mustopen the vents before operating heater.

6. This log heater is designed to be smoke-less. If logs ever appear to smoke, turnoff heater and call a qualified serviceperson. Note: During initial operation,slight smoking may occur due to logcuring and heater burning manufactur-ing residues.

7. To prevent the creation of soot, followthe instructions in Cleaning and Main-tenance, page 16.

8. Before using furniture polish, wax, car-pet cleaners, or similar products, turnheater off. If heated, the vapors fromthese products may create a white pow-der residue within burner box or onadjacent walls or furniture.

9. This heater needs fresh, outside air ven-tilation to run properly. This heater hasan Oxygen Depletion Sensing (ODS)safety shutoff system. The ODS shutsdown the heater if not enough fresh airis available. See Air for Combustionand Ventilation, pages 4 through 6. Ifheater keeps shutting off, see Trouble-shooting, pages 17 through 19.

10. Do not run heater• where flammable liquids or vapors

are used or stored• under dusty conditions

11. Do not use this heater to cook food orburn paper or other objects.

12. Do not use heater if any part has beenexposed to or under water. Immediatelycall a qualified service technician to in-spect the room heater and to replace anypart of the control system and any gascontrol which has been under water.

WARNING: Any change tothis heater or its controls can bedangerous.

WARNING: Do not allow fansto blow directly into the fireplace.Avoid any drafts that alter burnerflame patterns. Ceiling fans cancreate drafts that alter burnerflame patterns. Altered burnerpatterns can cause sooting.

WARNING: Do not use ablower insert, heat exchangerinsert, or other accessory not ap-proved for use with this heater.

Due to high temperatures, theappliance should be located outof traffic and away from furnitureand draperies.

Do not place clothing or otherflammable material on or nearthe appliance. Never place anyobjects on the heater.

Heater base assembly becomesvery hot when running heater.Keep children and adults awayfrom hot surface to avoid burnsor clothing ignition. Heater willremain hot for a time after shut-down. Allow surface to cool be-fore touching.

Carefully supervise young chil-dren when they are in the roomwith heater.

You must operate this heater witha fireplace screen in place. Makesure fireplace screen is closedbefore running heater.

Keep the appliance area clear andfree from combustible materials,gasoline, and other flammablevapors and liquids.

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OWNERS MANUAL

PRODUCTIDENTIFICATION

Figure 1 - Ember Master

Left Front Log

Control Knob

Rear Log

Base Assembly

FrontBurner

PiezoIgnitor

RearBurner

Crossover Log

BottomMiddle Log

Install and use heater with care. Follow alllocal codes. In the absence of local codes, usethe latest edition of The National Fuel GasCode, ANS Z223.1, also known as NFPA 54*.

*Available from:

American National Standards Institute, Inc.1430 Broadway

New York, NY 10018

National Fire Protection Association, Inc.Batterymarch Park

Quincy, MA 02269

OPERATIONThis heater is clean burning. It requires nooutside venting. There is no heat loss out avent or up a chimney. Heat is generated byboth realistic flames and glowing coals.This heater is designed for vent-free opera-tion with flue damper closed. It has beentested and approved to ANS Z21.11.2 stan-dard for unvented heaters. State and localcodes in some areas prohibit the use of vent-free heaters. This heater may also be oper-ated as a vented decorative (ANS Z21.60)product by opening the flue damper.

SAFETY DEVICEThis heater has a pilot with an OxygenDepletion Sensing (ODS) safety shutoffsystem. The ODS/pilot is a required featurefor vent-free room heaters. The ODS/pilotshuts off the heater if there is not enoughfresh air.

PIEZO IGNITION SYSTEMThis heater has a piezo ignitor. This systemrequires no matches, batteries, or othersources to light heater.

1. Remove logs and heater base assem-bly from carton. Note: Do not pick upheater base assembly by burners. Thiscould damage heater. Always handlebase assembly by grate.

2. Remove all protective packaging ap-plied to logs and heater for shipment.

3. Check all items for any shipping dam-age. If damaged, promptly informdealer where you bought heater.

UNPACKING

PRODUCTFEATURESTop Middle Log

Right Front Log

CAUTION: Do not remove themetal data plates attached to theheater base assembly. The dataplates contain important warrantyinformation.

13. Do not operate heater if any log is bro-ken. Do not operate heater if a log ischipped (dime-sized or larger).

14. Turn heater off and let cool before ser-vicing. Only a qualified service personshould service and repair heater.

15. Operating heater above elevations of4,500 feet may cause pilot outage.

SAFETYINFORMATIONContinued

LOCAL CODES

4 105070


Confined and Unconfined Space

The National Fuel Gas Code, ANS Z223.1defines a confined space as a space whosevolume is less than 50 cubic feet per 1,000Btu per hour (4.8 m3 per kw) of the aggre-gate input rating of all appliances installedin that space and an unconfined space as aspace whose volume is not less than 50cubic feet per 1,000 Btu per hour (4.8 m3 perkw) of the aggregate input rating of allappliances installed in that space. Roomscommunicating directly with the space inwhich the appliances are installed*, throughopenings not furnished with doors, are con-sidered a part of the unconfined space.

This heater shall not be installed in a con-fined space or unusually tight constructionunless provisions are provided for adequatecombustion and ventilation air.

* Adjoining rooms are communicating onlyif there are doorless passageways or ventila-tion grills between them.

AIR FORCOMBUSTION ANDVENTILATION

Today’s homes are built more energy effi-cient than ever. New materials, increasedinsulation, and new construction methodshelp reduce heat loss in homes. Home own-ers weather strip and caulk around windowsand doors to keep the cold air out and thewarm air in. During heating months, homeowners want their homes as airtight aspossible.

While it is good to make your home energyefficient, your home needs to breathe. Freshair must enter your home. All fuel-burningappliances need fresh air for proper com-bustion and ventilation.

Exhaust fans, fireplaces, clothes dryers, andfuel burning appliances draw air from thehouse to operate. You must provide ad-equate fresh air for these appliances. Thiswill insure proper venting of vented fuel-burning appliances.

WARNING: This heater shallnot be installed in a confined spaceor unusually tight constructionunless provisions are providedfor adequate combustion and ven-tilation air. Read the following in-structions to insure proper freshair for this and other fuel-burningappliances in your home.

PROVIDING ADEQUATEVENTILATIONThe following are excerpts from NationalFuel Gas Code, NFPA 54/ANS Z223.1, Sec-tion 5.3, Air for Combustion and Ventilation.

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

1. Unusually Tight Construction

2. Unconfined Space

3. Confined Space

The information on pages 4 through 6 willhelp you classify your space and provideadequate ventilation.

Unusually Tight Construction

The air that leaks around doors and win-dows may provide enough fresh air forcombustion and ventilation. However, inbuildings of unusually tight construction,you must provide additional fresh air.

Unusually tight construction is de-fined as construction where:a. walls and ceilings exposed to the

outside atmosphere have a con-tinuous water vapor retarder witha rating of one perm (6 x 10-11 kgper pa-sec-m2) or less with open-ings gasketed or sealed and

b. weather stripping has beenadded on openable windows anddoors and

c. caulking or sealants are appliedto areas such as joints aroundwindow and door frames, be-tween sole plates and floors, be-tween wall-ceiling joints, be-tween wall panels, at penetra-tions for plumbing, electrical, andgas lines, and at other openings.

If your home meets all of the threecriteria above, you must provide ad-ditional fresh air. See Ventilation AirFrom Outdoors, page 6 .

If your home does not meet all of thethree criteria above, proceed to Deter-mining Fresh-Air Flow For Heater Lo-cation. page 5.

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OWNERS MANUAL

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 betweenthe 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 ofthe 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: 2560 cu. ft. (volume of space) ÷ 50 cu. ft. = 51.2 or 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/HrGas water heater* _____________ Btu/HrGas furnace _____________ Btu/HrVented gas heater _____________ Btu/HrGas fireplace logs _____________ Btu/HrOther gas appliances* + _____________ Btu/HrTotal = _____________ 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: 51,200 Btu/Hr (maximum the space can support)

73,000 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 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 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 noadditional fresh air ventilation.

Continued

AIR FORCOMBUSTION ANDVENTILATIONContinued

Example:Gas water heater 40,000 Btu/Hr

Vent-free heater + 33,000 Btu/Hr

Total = 73,000 Btu/Hr

WARNING: If the area in which the heater may be operated is smaller than that defined as an unconfined spaceor if the building is of unusually tight construction, provide adequate combustion and ventilation air by one ofthe methods described in the National Fuel Gas Code, ANS Z223.1, Section 5.3 or applicable local codes.

6 105070


AIR FORCOMBUSTION ANDVENTILATIONContinued

VENTILATION AIR

Ventilation Air From InsideBuilding

This fresh air would come from an adjoiningunconfined space. When ventilating to anadjoining unconfined space, you must pro-vide two permanent openings: one within12" of the ceiling and one within 12" of thefloor on the wall connecting the two spaces(see options 1 and 2, Figure 2). You can alsoremove door into adjoining room (see op-tion 3, Figure 2). Follow the National FuelGas Code, NFPA 54/ANS Z223.1, Section5.3, Air for Combustion and Ventilation forrequired size of ventilation grills or ducts.

Ventilation Air From Outdoors

Provide extra fresh air by using ventilationgrills or ducts. You must provide two per-manent openings: one within 12" of theceiling and one within 12" of the floor.Connect these items directly to the outdoorsor spaces open to the outdoors. These spacesinclude attics and crawl spaces. Follow theNational Fuel Gas Code, NFPA 54/ANSZ223.1, Section 5.3, Air for Combustion andVentilation for required size of ventilationgrills or ducts.

IMPORTANT: Do not provide openings forinlet or outlet air into attic if attic has athermostat-controlled power vent. Heated airentering the attic will activate the power vent.

Figure 2 - Ventilation Air from Inside Building

OrRemoveDoor intoAdjoining

Room,Option

3

Ventilation Grills Into Adjoining Room,

Option 2

VentilationGrills

Into Adjoining Room,

Option 1

12"

12"

OutletAir

VentilatedAttic

OutletAir

InletAir

Inlet Air Ventilated Crawl Space

To CrawlSpace

To Attic

Figure 3 - Ventilation Air from Outdoors

WARNING: Rework work-sheet, adding the space of theadjoining unconfined space. Thecombined spaces must haveenough fresh air to supply allappliances in both spaces.

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OWNERS MANUAL

MINIMUM FIREPLACECLEARANCE TO COMBUSTIBLE

MATERIALSLog Size 18", 24", 30"Side Wall 16"Ceiling 42"Floor 5"

INSTALLATION ANDCLEARANCES(Vent-Free Operation Only)

WARNING: Maintain the mini-mum clearances. If you can, pro-vide greater clearances fromfloor, ceiling, and adjoining wall.

LOG SIZING REQUIREMENTS

Minimum Firebox SizeLog Front Rear*Size Height Depth Width Width18" 17" 14" 20" 14"24" 17" 14" 26" 18"30" 17" 14" 32" 22"

INSTALLATION

WARNING: A qualified ser-vice person must install heater.Follow all local codes.

WARNING: Before installingin a solid fuel burning fireplace,the chimney flue and firebox mustbe cleaned of soot, creosote,ashes and loose paint by a quali-fied chimney cleaner. Creosotewill ignite if highly heated. A dirtychimney flue may create and dis-tribute soot within the house. In-spect chimney flue for damage. Ifdamaged, operate heater with fluedamper closed.

WARNING: Seal any fresh airvents or ash clean-out doors lo-cated on floor or wall of fireplace.If not, drafting may cause pilotoutage or sooting. Use a heat-resistant sealant. Do not sealchimney flue damper.

WARNING: Never install theheater• in a bedroom or bathroom un-

less installed as a vented ap-pliance, see page 10

• in a recreational vehicle• where curtains, furniture,

clothing, or other flammableobjects are less than 42 inchesfrom the front, top, or sides ofthe heater

• in high traffic areas• in windy or drafty areas

CAUTION: This heater createswarm air currents. These currentsmove heat to wall surfaces next toheater. Installing heater next tovinyl or cloth wall coverings oroperating heater where impurities(such as tobacco smoke, aromaticcandles, cleaning fluids, oil orkerosene lamps, etc.) in the airexist, may discolor walls.

IMPORTANT: Vent-free heaters add mois-ture to the air. Although this is beneficial,installing heater in rooms without enoughventilation air may cause mildew to formfrom too much moisture. See Air for Com-bustion and Ventilation, pages 4 through 6.

CHECK GAS TYPEUse only natural gas. If your gas supply is notnatural, do not install heater. Call dealer whereyou bought heater for proper type heater.

NOTICE: State or local codes mayonly allow operation of this appli-ance in a vented configuration.Check your state or local codes.

Continued

NOTICE: This heater is intendedfor use as supplemental heat. Usethis heater along with your pri-mary heating system. Do not in-stall this heater as your primaryheat source. If you have a centralheating system, you may runsystem’s circulating blower whileusing heater. This will help circu-late the heat throughout thehouse. In the event of a poweroutage, you can use this heateras your primary heat source.

*Measured at 14" depth

Carefully follow the instructions below. Thiswill ensure safe installation into a masonry,UL127-listed manufactured fireplace, orlisted vent-free firebox.

Minimum Clearances For SideCombustible Material, Side Wall,and CeilingA. Clearances from the side of the fire-

place cabinet to any combustible ma-terial and wall should follow the dia-gram in Figure 4.

Example: The face of a mantel, book-shelf, etc. is made of combustible ma-terial and protrudes 3 1/2" from the wall.This combustible material must be 4"from the side of the fireplace opening(see Figure 4).

Note: When installing your gas logsinto a manufactured firebox, followfirebox manufacturer’s instructions forminimum clearances to combustiblematerials.

B. Clearances from the top of the fireplaceopening to the ceiling should not be lessthan 42 inches.

Figure 4 - Minimum Clearance forCombustible to Wall

.5 2

7/16

7/8

13/4

31/2

51/4

7

8 3/4

101/2

121/4

1 4 6 8 10 12 14 16FIREBOX

INCHES

INC

HE

S

*Minimum 16 inches from Side Wall

*

Example

8 105070


Noncombustible Requirements forMaterial Distance (A) Safe Installation

12" or more Noncombustible material OK.

Between 8" and 12" 24" and 30" Models: Install fireplace hood accessory(HDABK or HDABR, see Accessories, page 22).

18" Model: Noncombustible material OK.

Less than 8" Noncombustible material must be extended to atleast 8". See Between 8" and 12", above. If youcannot extend material, you must operate heaterwith flue damper open.

Heat ResistantMaterial

(A)

Figure 5 - Heat Resistant Material (Slate, Marble, Tile, etc.) Above Fireplace

INSTALLATIONContinued

Minimum NonCombustibleMaterial Clearances

If Not Using Mantel

Note: If using a mantel, proceed to If UsingMantel. If not using a mantel, follow theinformation on this page.

You must have noncombustible material(s)above the fireplace opening. Noncombus-tible materials (such as slate, marble, tile,etc.) must be at least 1/2 inch thick. Withsheet metal, you must have noncombustiblematerial behind it. Noncombustible mate-rial must extend at least 8" up (for all mod-els). If noncombustible material is less than12", you must install the fireplace hoodaccessory (24" models only). See Figure 5for minimum clearances.

IMPORTANT: If you cannot meet theseminimum clearances, you must operateheater with chimney flue damper open. Goto Installing Damper Clamp Accessory forVented Operation, page 10.

NOTICE: Manual control heatersmay be used as a vented product.If so, you must always run heaterwith chimney flue damper open.If running heater with damperopen, noncombustible materialabove fireplace opening is notneeded. Go to Installing DamperClamp Accessory for VentedOperation, page 10.

If Using Mantel

You must have noncombustible material(s)above the fireplace opening. Noncombus-tible materials (such as slate, marble, tile,etc.) must be at least 1/2 inch thick. Withsheet metal, you must have noncombustiblematerial behind it. Noncombustible mate-rial must extend at least 8 inches up (for allmodels). If noncombustible material is lessthan 12", you must install the fireplace hoodaccessory (24" models only). Even if non-combustible material is more than 12", youmay need the hood accessory to deflect heataway from your mantel shelf. See Figure 5and Figures 6 and 7, page 9, for minimumclearances.

IMPORTANT: If you cannot meet theseminimum clearances, you must operateheater with chimney flue damper open. Goto Installing Damper Clamp Accessory forVented Operation, page 10.

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OWNERS MANUAL

14"Min.

Combustible Material

Non-Combustible Material

Figure 8 - Minimum Fireplace ClearancesIf Installed at Floor Level

Hearth

5"Min.

Combustible Material

Figure 9 - Minimum Fireplace ClearancesAbove Combustible Flooring

FLOOR CLEARANCESA. If installing appliance on the floor level,

you must maintain the minimum dis-tance of 14" to combustibles (see Fig-ure 8).

B. If combustible materials are less than14" to the fireplace, you must installappliance at least 5" above the combus-tible flooring (see Figure 9).

Figure 7 - Minimum Mantel Clearances When Using Hood

Determining Minimum MantelClearance When Using a Hood

If minimum clearances in Figure 6 are notmet, you must have a hood. When using ahood there are still certain minimum mantelclearances required. Follow minimum clear-ances shown in Figure 7 when using hood.


Figure 6 - Minimum Mantel Clearances Without Using Hood

MANTEL CLEARANCESIn addition to meeting noncombustible mate-rial clearances, you must also meet requiredclearances between fireplace opening andmantel shelf. If you do not meet the clear-ances listed below, you will need a hood.

Determining Minimum MantelClearance

If you meet minimum clearance betweenmantel shelf and top of fireplace opening, ahood is not required (see Figure 6).

Continued

Minimum Non-Combustible Material 8"

Min.12" 15" 18"

All minimum distances arein inches

Log Sets

18" & 24" Models20"

2 1/2"

6"

8"

10"

12"

Distances to Underside ofMantel

Hood(HDABK,HDABR)

Top of FireplaceOpening

Underside ofMantel Shelf

Minimum Non-Combustible Material

Minimum Non-Combustible Material Height

Distances to Underside ofMantel

Top of FireplaceOpening

Underside ofMantel Shelf

12"

8"

(A)

18"

14"

20"

17"

22"

19"

24"

20"

All minimum distances arein inches

Log Set24" Models

18" Model

2 1/2"

6"

8"

10"

Mantel Shelf

NOTICE: If your installation doesnot meet the minimum clearancesshown, you must do one of thefollowing:• operate the logs only with the

flue damper open• raise the mantel to an accept-

able height• remove the mantel

NoncombustibleMaterial

24" and 30" Models

All Models

NOTICE: Surface temperatures ofadjacent walls and mantels be-come hot during operation. Wallsand mantels above the fireboxmay become hot to the touch. Ifinstalled properly, these tempera-tures meet the requirement of thenational product standard. Fol-low all minimum clearancesshown in this manual.

10 105070



INSTALLING HEATER BASEASSEMBLY

WARNING: You must securethis heater to fireplace floor. Ifnot, heater will move when youadjust controls. Moving heatermay cause a gas leak.

WARNING: If installing in asunken fireplace, special careis needed. You must raise thefireplace floor to allow accessto heater control panel. This willinsure adequate air flow andguard against sooting. Raisefireplace floor with noncombus-tible material. Make sure mate-rial is secure.

CAUTION: Do not pick upheater base assembly by burners.This could damage heater. Onlyhandle base assembly by grates.

Installation Items Needed• hardware package (provided with heater)

• approved flexible gas hose (not provided)(if allowed by local codes)

• sealant (resistant to propane/LP gas, notprovided)

• electric drill with 3/16" masonry drill bit

1. Apply pipe joint sealant lightly to malethreads of gas fitting (not provided).Connect approved flexible gas hose togas regulator of heater (see Figure 11,page 11).

IMPORTANT: Hold gas regulator withwrench when connecting flexible gashose.

2. Locate mounting brackets, bolts, andnuts in hardware package. Attachmounting brackets to heater base (seeFigure 12, page 11). Attach nuts fingertight.

3. Position heater base assembly in fire-place.

4. Place logs in their proper position onheater base.

5. Center heater base and logs front-to-back and side-to-side in fireplace.

6. Carefully remove logs without movingheater base.

7. Mark screw locations through holes inmounting brackets. If installing in abrick-bottom fireplace, mark screw lo-cations in mortar joint of bricks.

8. Remove heater base from fireplace.Remove mounting brackets from heaterbase.

9. Drill holes at marked locations using3/16" drill bit.

INSTALLING DAMPERCLAMP ACCESSORY FORVENTED OPERATIONNote: When used as a vented heater, appli-ance must be installed only in a solid-fuelburning fireplace with a working flue andconstructed of noncombustible material.

If your heater is a manually-controlledmodel, you may use this heater as a ventedproduct. There are three reasons for operat-ing your heater in the vented mode.

1. The fireplace does not meet the clear-ance to combustibles requirements forvent-free operation.

2. State or local codes do not permit vent-free operation.

3. You prefer vented operation.

If reasons number 1 or 2 above apply to you,you must permanently open chimney fluedamper. You must install the damper clampaccessory (to order, see Accessories, page22). This will insure vented operation (seeFigure 10). The damper clamp will keepdamper open. Installation instructions areincluded with clamp accessory.

See chart below for minimum permanentflue opening you must provide. Attachdamper clamp so the minimum permanentflue opening will be maintained at all times.

Figure 10 - Attaching Damper Clamp

Damper

Damper Clamp

DamperClamp

Damper

Damper

Manufactured FireplaceMasonry Fireplace

Chimney Minimum PermanentHeight (ft.) Flue Opening (sq. ins.)

6' to 15' 39 sq. inches15' to 30' 29 sq. inches

Area of Various Standard Round Flues

Diameter (ins.) Area (sq. ins.)

5" 20 sq. inches6" 29 sq. inches7" 39 sq. inches8" 51 sq. inches

CAUTION: Do not remove themetal data plates attached to theheater base assembly. The dataplates contain important warrantyinformation.

IMPORTANT: Make sure the heater burn-ers are level. If heater is not level, heater willnot work properly.

11105070

OWNERS MANUAL

10. Attach mounting brackets to fireplacefloor using masonry screws (in hard-ware package).

11. Reattach heater base to mountingbrackets. Tighten nuts firmly.

Heater GasRegulator

Flexible Gas Hose (ifallowed by local codes)

Figure 11 - Attaching Flexible Gas Hoseto Heater Gas Regulator

Figure 12 - Attaching Heater to FireplaceFloor

Continued

MasonryScrew

MountingBracketScrew

MountingBracket Nut Mounting

Bracket


Tee Joint

PipeNipple

Cap

3" MinimumSediment

Trap

GasRegulator

FromGas Meter(5" W.C.* to10.5" W.C.Pressure)

CSA Design-CertifiedEquipment Shutoff ValveWith 1/8" NPT Tap

Approved Flexible GasHose (if allowed by localcodes)

CAUTION: Avoid damage toregulator. Hold gas regulator withwrench when connecting it to gaspiping and/or fittings.

Figure 13 - Gas Connection* Minimum inlet pressure for purpose of input adjustment.

CONNECTING TO GASSUPPLY

WARNING: A qualified ser-vice person must connect heaterto gas supply. Follow all localcodes.

Installation Items Needed

Before installing heater, make sure you havethe items listed below.

• piping (check local codes)• sealant (resistant to propane/LP gas)• equipment shutoff valve *• test gauge connection *• sediment trap• tee joint• pipe wrench

* An CSA design-certified equipment shutoffvalve with 1/8" NPT tap is an acceptablealternative to test gauge connection.

CAUTION: Use only new,black iron or steel pipe. Inter-nally-tinned copper tubing maybe used in certain areas. Checkyour local codes. Use pipe of 1/2"diameter or greater to allowproper gas volume to heater. Ifpipe is too small, undue loss ofpressure will occur.

Installation must include an equipmentshutoff valve, union, and plugged 1/8" NPTtap. Locate NPT tap within reach for testgauge hook up. NPT tap must be upstreamfrom heater (see Figure 13).

CAUTION: Use pipe joint seal-ant that is resistant to liquid pe-troleum (LP) gas.

We recommend that you install a sedimenttrap in supply line as shown in Figure 13.Locate sediment trap where it is withinreach for cleaning. Install in piping systembetween fuel supply and heater. Locate sedi-ment trap where trapped matter is not likelyto freeze. A sediment trap traps moistureand contaminants. This keeps them fromgoing into heater controls. If sediment trapis not installed or is installed wrong, heatermay not run properly.

WARNING: Never connectheater to private (non-utility) gaswells. This gas is commonlyknown as wellhead gas.

IMPORTANT: Install an equipment shutoffvalve in an accessible location. The equip-ment shutoff valve is for turning on andshutting off the gas to the appliance.

Apply pipe joint sealant lightly to malethreads. This will prevent excess sealantfrom going into pipe. Excess sealant in pipecould result in clogged heater valves.

WARNING: This appliance re-quires a 1/2" NPT (National PipeThread) inlet connection to thepressure regulator.

12 105070


WARNING: Never use an openflame to check for a leak. Apply amixture of liquid soap and waterto all joints. Bubbles formingshow a leak. Correct all leaks atonce.

WARNING: Test all gas pip-ing and connections for leaksafter installing or servicing. Cor-rect all leaks at once.

CHECKING GASCONNECTIONS

Pressure Testing Gas SupplyPiping System

Test Pressures In Excess Of 1/2 PSIG(3.5 kPa)

1. Disconnect appliance with its appliancemain gas valve (control valve) and equip-ment shutoff valve from gas supply pip-ing system. Pressures in excess of 1/2psig will damage heater regulator.

2. Cap off open end of gas pipe whereequipment shutoff valve was con-nected.

3. Pressurize supply piping system by ei-ther using compressed air or openingmain gas valve located on or near gasmeter.

4. Check all joints of gas supply pipingsystem. Apply mixture of liquid soapand water to gas joints. Bubbles form-ing show a leak.

5. Correct all leaks at once.

6. Reconnect heater and equipmentshutoff valve to gas supply. Check re-connected fittings for leaks.


Figure 14 - Equipment Shutoff Valve

ONPOSITION

OFFPOSITION

Open

Closed

EquipmentShutoffValve

Figure 15 - Checking Gas Joints

Gas Meter

EquipmentShutoffValve Control Valve

Location

Test Pressures Equal To or Less Than1/2 PSIG (3.5 kPa)

1. Close equipment shutoff valve (see Fig-ure 14).

2. Pressurize supply piping system by ei-ther using compressed air or openingmain gas valve located on or near gasmeter.

3. Check all joints from gas meter toequipment shutoff valve (see Figure15). Apply mixture of liquid soap andwater to gas joints. Bubbles formingshow a leak.


Pressure Testing Heater GasConnections1. Open equipment shutoff valve (see Fig-

ure 14).

2. Open main gas valve located on or neargas meter.

3. Make sure control knob of heater is inthe OFF position.

4. Check all joints from equipment shutoffvalve to control valve (see Figure 15).Apply mixture of liquid soap and wa-ter to gas joints. Bubbles forming showa leak.


6. Light heater (see Operating Heater,pages 14 and 15). Check all other in-ternal joints for leaks.

7. Turn off heater (see To Turn Off Gas toAppliance, page 15.

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OWNERS MANUAL


WARNING: Failure to posi-tion the parts in accordance withthese diagrams or failure to useonly parts specifically approvedwith this heater may result in prop-erty damage or personal injury.

INSTALLING LOGS

Each log is marked with a number. Thesenumbers will help you identify the log wheninstalling. It is very important to installthese logs exactly as instructed. Do notmodify logs. Only use logs supplied withheater.

1. Place front log (#1L and #1R) on topof the grate. Make sure the notches inthe bottom of the logs fit over the grateprongs (see Figure 16). Push back oflogs flush with metal grate bar. Note:18" model only has one front log.

2. Rest bottom middle log (#2) behindmetal posts on front burner. Make surethe grooves in the bottom of the log fitover the grate. Bring the log forwardnext to the metal posts. The pegs onthe log must be on top (see Figure 17).

3. Slide the grooves in the back of the rearlog (#3) against the rear grate prongs.Make sure the peg on the log is on top(see Figure 18).

4. Place the top middle log (#4) on thebottom middle log (#2). Make sue thepegs of the bottom middle log fit se-curely in the holes of the top middlelog (see Figure 19).

5. Place the crossover log (#5) on the backlog and the top middle log. Make surethe peg on the rear log is in the hole inthe bottom of the crossover log. Thecrossover log should fit in the cutoutof the top middle log (see Figure 20).

Front Log (#1L)

Front Log (#1R)

Grate Prongs

Notch

Metal Grate Bar

Figure 16 - Installing Front Logs(#1L and #1R)

Peg

Groove

Grate

Bottom MiddleLog (#2)

Groove

Figure 17 - Installing Bottom MiddleLog (#2)

Metal Post

Figure 18 - Installing Rear Log (#3)

Peg

Rear Log(#3)

Groovein Backof Log

Grate Prong

Figure 19 - Installing Top Middle Log (#4)

Peg

Hole

Top MiddleLog (#4)

Peg

Figure 20 - Installing Crossover Log (#5)

CrossoverLog (#5)

HoleCutout

Peg

14 105070


Figure 22 - Pilot

Thermocouple

Ignitor ElectrodePilot Burner

4. Wait five (5) minutes to clear out anygas. Then smell for gas, includingnear the floor. If you smell gas,STOP! Follow “B” in the safety in-formation, column 1. If you don’tsmell gas, go to the next step.

5. Press in control knob and turn coun-terclockwise Clockwise to the PILOTposition. Keep control knob pressedin for five (5) seconds (see Figure 21).Note: You may be running thisheater for the first time after hook-ing up to gas supply. If so, the con-trol knob may need to be pressed infor 30 seconds. This will allow air tobleed from the gas system.

6. With control knob pressed in, pressand release ignitor button. This willlight pilot. The pilot is attached to thefront burner. If needed, keep press-ing ignitor button until pilot lights.Note: If pilot does not light, contacta qualified service person or gas sup-plier for repairs. Until repairs aremade, light pilot with match. To lightpilot with match, see Manual Light-ing Procedure, page 15.

7. Keep control knob pressed in for 30seconds after lighting pilot. After 30seconds, release control knob.• If control knob does not pop out

when released, contact a qualifiedservice person or gas supplier forrepairs.

Note: If pilot goes out, repeat steps3 through 7.

8. Push in and turn control knob coun-terclockwise to the HIGH position.Both burners should light. Set con-trol knob to desired setting.

FOR YOUR SAFETYREAD BEFORE

LIGHTING

WARNING: If you do not fol-low these instructions exactly, afire or explosion may result caus-ing property damage, personalinjury or loss of life.

A. This appliance has a pilot which mustbe lighted by hand. When lighting thepilot, follow these instructions exactly.

B. BEFORE LIGHTING smell allaround the appliance area for gas. Besure to smell next to the floor becausesome gas is heavier than air and willsettle on the floor.WHAT TO DO IF YOU SMELLGAS• Do not try to light any appliance.• Do not touch any electric switch; do

not use any phone in your building.• Immediately call your gas supplier

from a neighbor’s phone. Followthe gas supplier’s instructions.

• If you cannot reach your gas sup-plier, call the fire department.

C. Use only your hand to push in or turnthe gas control knob. Never use tools.If the knob will not push in or turnby hand, don’t try to repair it, call aqualified service technician or gassupplier. Force or attempted repairmay result in a fire or explosion.

D. Do not use this appliance if any parthas been under water. Immediatelycall a qualified service technician toinspect the appliance and to replaceany part of the control system andany gas control which has been un-der water.

LIGHTINGINSTRUCTIONS

Control KnobIgnitor Button

Figure 21 - Control Knob and IgnitorButton Location

WARNING:• If fireplace has glass doors,

never operate this heater withglass doors closed. If you op-erate heater with doors closed,heat buildup inside fireplacewill cause glass to burst. Alsoif fireplace opening has ventsat the bottom, you must openthe vents before operatingheater.

• You must operate this heaterwith a fireplace screen in place.Make sure fireplace screen isclosed before running heater.

1. STOP! Read the safety informationabove.

2. Make sure equipment shutoff valveis fully open.

3. Press in and turn control knob clock-wise Clockwise to the OFF position.

NOTICE: During initial operationof new heater, burning logs willgive off a paper-burning smell.Orange flame will also be present.Open damper or window to ventsmell. This will only last a few hours.

Note: Home owners generally prefer tooperate their heater with the chimneydamper closed. This will put all the heatinto the room. However, there may betimes you will desire the full flames of theHigh heat setting but will find the heatoutput excessive. You can open the chim-ney damper (if you have one) fully orpartially to release some of the heat.

OPERATINGHEATER

WARNING: Damper handlewill be hot if heater has beenrunning.

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OWNERS MANUAL

TO TURN OFF GASTO APPLIANCE

WARNING: Do not operateheater between locked positions.

CAUTION: Do not try to ad-just heating levels by using theequipment shutoff valve.

The variable control valve can be set toany heat setting and flame height desired,by simply turning the control knob untilthat setting is attained. Even the lowestsetting provides realistic flames and glow-ing embers from two burners. Selectinghigher settings produces greater heatoutput. This results in increased heatingcomfort.

Shutting Off Heater1. Press in and turn control knob clock-

wise Clockwise to the HIGH position.2. Turn the control knob clockwise

Clockwise to the PILOT position.3. Press in control knob and turn clock-

wise Clockwise to the OFF Position.

Shutting Off Burners Only (pilotstays lit)1. Turn the control knob clockwise

Clockwise to the HIGH position.2. Press in and turn control knob clock-

wise Clockwise to the pilot position.

OPERATINGHEATERContinued

VARIABLE CONTROLOPERATION

MANUAL LIGHTINGPROCEDURE

1. Follow steps 1 through 5 under Light-ing Instructions, page 14.

2. Depress control knob and light pilotwith match.

3. Keep control knob pressed in for 30seconds after lighting pilot. After 30seconds, release control knob. Nowfollow step 8 under Lighting Instruc-tions, page 14.

FRONT BURNER FLAMEPATTERNFigure 25 shows correct front burner flamepattern. Figure 26 shows incorrect frontburner flame pattern. The incorrect burnerflame pattern shows yellow tipping at top ofblue flame.

Figure 26 - Incorrect Front Burner FlamePattern

Figure 25 - Correct Front Burner FlamePattern

Yellow Tipping At Topof Blue Flame

WARNING: If yellow tippingoccurs, your heater could pro-duce increased levels of carbonmonoxide. If front burner flamepattern shows yellow tipping, fol-low instructions at bottom of thispage. Yellow flame on rear burneris normal.

NOTICE: Do not mistake orangeflames with yellow tipping. Dirtor other fine particles are burnedby heater, causing brief patchesof orange flame.

INSPECTINGBURNERSCheck pilot flame pattern and burner flamepatterns often.

PILOT FLAME PATTERNFigure 23 shows a correct pilot flame pat-tern. Figure 24 shows an incorrect pilotflame pattern. The incorrect pilot flame isnot touching the thermocouple. This willcause the thermocouple to cool. When thethermocouple cools, the heater will shutdown.

If pilot flame pattern is incorrect, as shownin Figure 24

• turn heater off (see To Turn Off Gas toAppliance, column 1)

• see Troubleshooting, pages 17 through 19

ThermocouplePilot Burner

Figure 23 - Correct Pilot Flame Pattern

Pilot BurnerThermocouple

Figure 24 - Incorrect Pilot Flame Pattern

If front burner flame pattern is incorrect, asshown in Figure 26

• turn heater off (see To Turn Off Gas toAppliance, column 1)

• see Troubleshooting, pages 17 through 19

16 105070


SPECIFICATIONS18" Variable 24" Variable 30" VariableManually- Manually- Manually-Controlled Controlled Controlled

Btu (Variable) 16,000/26,000 20,000/33,000 21,500/36,000

Type Gas Natural Gas Only Natural Gas Only Natural Gas Only

Ignition Piezo Piezo Piezo

Manifold Pressure 3.4" W.C. 3.4" W.C. 3.4" W.C.

Inlet Gas

Pressure (in. of water)Maximum 10.5" 10.5" 10.5"Minimum* 5" 5" 5"

Shipping Weight 26 lbs. 30 lbs. 34 lbs.

* For purpose of input adjustment

CLEANING ANDMAINTENANCE

WARNING: Turn off heaterand let cool before cleaning.

CAUTION: You must keepcontrol areas, burners, and cir-culating air passageways ofheater clean. Inspect these areasof heater before each use. Haveheater inspected yearly by a quali-fied service person. Heater mayneed more frequent cleaning dueto excessive lint from carpeting,bedding material, pet hair, etc.

CLEANING BURNERINJECTOR HOLDER ANDPILOT AIR INLET HOLEThe primary air inlet holes allow the properamount of air to mix with the gas. Thisprovides a clean burning flame. Keep theseholes clear of dust, dirt, lint, and pet hair.Clean these air inlet holes prior to eachheating season. Blocked air holes will cre-ate soot. We recommend that you clean theunit every three months during operationand have heater inspected yearly by a quali-fied service person.

We also recommend that you keep the burnertube and pilot assembly clean and free ofdust and dirt. To clean these parts we recom-mend using compressed air no greater than30 PSI. Your local computer store, hard-ware store, or home center may carry com-pressed air in a can. You can use a vacuumcleaner in the blow position. If using com-pressed air in a can, please follow the direc-tions on the can. If you don't follow direc-tions on the can, you could damage the pilotassembly.

1. Shut off the unit, including the pilot.Allow the unit to cool for at least thirtyminutes.

2. Inspect burner, pilot, and primary airinlet holes on injector holder for dustand dirt (see Figure 27).

3. Blow air through the ports/slots andholes in the burner.

Figure 28 - Pilot Inlet Air Hole

Pilot Assembly

Pilot Air InletHole

4. Check the injector holder located at theend of the burner tube again. Removeany large particles of dust, dirt, lint, orpet hair with a soft cloth or vacuumcleaner nozzle.

5. Blow air into the primary air holes onthe injector holder.

6. In case any large clumps of dust havenow been pushed into the burner repeatsteps 3 and 4.

Clean the pilot assembly also. A yellow tipon the pilot flame indicates dust and dirt inthe pilot assembly. There is a small pilot airinlet hole about two inches from where thepilot flame comes out of the pilot assembly(see Figure 28). With the unit off, lightlyblow air through the air inlet hole. You mayblow through a drinking straw if compressedair is not available.

LOGS• If you remove logs for cleaning, refer to

Installing Logs, page 13, to properly re-place logs.

• Replace log(s) if broken or chipped(dime-sized or larger).

Figure 27 - Injector Holder On OutletBurner Tube

BurnerTube

Injector Holder

Primary Air InletHoles

Ports/Slots

17105070

OWNERS MANUAL

TROUBLESHOOTING

Note: All troubleshooting items are listed inorder of operation.

WARNING: Turn off and un-plug heater and let cool beforeservicing. Only a qualified ser-vice person should service andrepair heater.

CAUTION: Never use a wire,needle, or similar object to cleanODS/pilot. This can damage ODS/pilot unit.

POSSIBLE CAUSE

1. Ignitor electrode not connected to igni-tor cable

2. Ignitor cable pinched or wet

3. Piezo ignitor nut is loose

4. Broken ignitor cable5. Bad piezo ignitor6. Ignitor electrode positioned wrong7. Ignitor electrode broken

1. Gas supply turned off or equipmentshutoff valve closed

2. Control knob not in PILOT position3. Control knob not pressed in while in

PILOT position4. Air in gas lines when installed

5. ODS/pilot is clogged

6. Gas regulator setting is not correct

1. Control knob not fully pressed in2. Control knob not pressed in long enough

3. Safety interlock system has been triggered

4. Equipment shutoff valve not fully open5. Pilot flame not touching thermocouple,

which allows thermocouple to cool,causing pilot flame to go out. This prob-lem could be caused by one or both ofthe following:A) Low gas pressureB) Dirty or partially clogged ODS/pilot

6. Thermocouple connection loose at con-trol valve

7. Thermocouple damaged8. Control valve damaged

REMEDY

1. Reconnect ignitor cable

2. Free ignitor cable if pinched by anymetal or tubing. Keep ignitor cable dry

3. Tighten nut holding piezo ignitor to basepanel of log set. Nut is located behindbase panel

4. Replace ignitor cable5. Replace piezo ignitor6. Replace ignitor7. Replace ignitor

1. Turn on gas supply or open equipmentshutoff valve

2. Turn control knob to PILOT position3. Press in control knob while in PILOT

position4. Continue holding down control knob.

Repeat igniting operation until air isremoved

5. Clean ODS/pilot (see Cleaning andMaintenance, page 16) or replace ODS/pilot assembly

6. Replace gas regulator

1. Press in control knob fully2. After ODS/pilot lights, keep control

knob pressed in 30 seconds3. Wait one minute for safety interlock sys-

tem to reset. Repeat ignition operation4. Fully open equipment shutoff valve5. A) Contact local natural gas company

B) Clean ODS/pilot (see Cleaning andMaintenance, page 16) or replace ODS/pilot assembly

6. Hand tighten until snug, then tighten1/4 turn more

7. Replace thermocouple8. Replace control valve

OBSERVED PROBLEM

When ignitor button is pressed, there is nospark at ODS/pilot

When ignitor button is pressed, there isspark at ODS/pilot but no ignition

ODS/pilot lights but flame goes out whencontrol knob is released

Continued

Note: For additional help, visit DESAInternational’s technical service website at www.desatech.com.

www.desatech.com

18 105070


OBSERVED PROBLEM

One or both burners do not light after ODS/pilot is lit

Delayed ignition of one or both burners

Burner backfiring during combustion

Yellow flame in front burner during burnercombustion

Slight smoke or odor during initial operation

Heater produces a whistling noise whenburners are lit

Moisture/condensation noticed on windows

White powder residue forming within burnerbox or on adjacent walls or furniture

REMEDY

1. Contact local natural gas company2. Clean burner(s) (see Cleaning and

Maintenance, page 16) or replace burnerorifice(s)

3. Contact qualified service person4. Replace burner orifice(s)

1. Contact local natural gas company2. Clean burner(s) (see Cleaning and

Maintenance, page 16) or replace burnerorifice(s)

3. Contact qualified service person

1. Clean burner (see Cleaning and Main-tenance, page 16) or replace burnerorifice

2. Replace damaged burner3. Replace gas regulator

1. Check burner(s) for dirt and debris. Iffound, clean burner(s) (see Cleaning andMaintenance, page 16)

2. Replace gas regulator

1. Problem will stop after a few hours ofoperation

1. Turn control knob to LO position andlet warm up for a minute

2. Operate burners until air is removedfrom line. Have gas line checked by lo-cal natural gas company

3. Observe minimum installation clear-ances (see pages 7 through 9)

4. Clean burners (see Cleaning and Main-tenance, page 16) or replace burnerorifice(s)

1. Refer to Air for Combustion and Venti-lation requirements (page 4)

1. Turn heater off when using furniturepolish, wax, carpet cleaners, or similarproducts

TROUBLESHOOTINGContinued

POSSIBLE CAUSE

1. Inlet gas pressure is too low2. Burner orifice(s) clogged

3. Mislocated crossover tube4. Burner orifice(s) diameter is too small

1. Manifold pressure is too low2. Burner orifice(s) clogged

3. Mislocated crossover tube

1. Burner orifice is clogged or damaged

2. Damaged burner3. Gas regulator defective

1. Not enough air

2. Gas regulator defective

1. Residues from manufacturing processesand logs curing

1. Turning control knob to HI positionwhen burners are cold

2. Air in gas line

3. Air passageways on heater blocked

4. Dirty or partially clogged burnerorifice(s)

1. Not enough combustion/ventilation air

1. When heated, vapors from furniture pol-ish, wax, carpet cleaners, etc. turn intowhite powder residue

www.desatech.com

19105070

OWNERS MANUAL

TROUBLESHOOTINGContinued

WARNING: If you smell gas• Shut off gas supply.• 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.

IMPORTANT: Operating heater where impurities in air exist may create odors. Cleaningsupplies, paint, paint remover, cigarette smoke, cements and glues, new carpet or textiles,etc., create fumes. These fumes may mix with combustion air and create odors. These odorswill disappear over time.

POSSIBLE CAUSE

1. Metal expanding while heating or con-tracting while cooling

1. Heater burning vapors from paint, hairspray, glues, cleaners, chemicals, newcarpet, etc. (See IMPORTANT state-ment above)

2. Gas leak. See Warning statement attop of page

1. Not enough fresh air is available2. Low line pressure3. ODS/pilot is partially clogged


2. Control valve defective

1. Foreign matter between control valveand burner


OBSERVED PROBLEM

Heater produces a clicking/ticking noisejust after burners are lit or shut off

Heater produces unwanted odors

Heater shuts off in use (ODS operates)

Gas odor even when control knob is in OFFposition

Gas odor during combustion

REMEDY

1. This is common with most heaters. Ifnoise is excessive, contact qualified ser-vice person

1. Open window and ventilate room. Stopusing odor causing products while heateris running

2. Locate and correct all leaks (see Check-ing Gas Connections, page 12)

1. Open window and/or door for ventilation2. Contact local natural gas company3. Clean ODS/pilot (see Cleaning and

Maintenance, page 16)


2. Replace control valve

1. Take apart gas tubing and remove for-eign matter


www.desatech.com

20 105070


ILLUSTRATEDPARTSBREAKDOWNVARIABLE MANUALLY-CONTROLLED MODELS

VFN18MVVFN24MVVFN30MV

1719

18

25

24

20

20

26

27

286

7

27

27

24

9

8

10

1112

14

21

22

26-126-2

23

6-1

6-2

13

15 16

4 5

3

2

1R

1L

21105070

OWNERS MANUAL

PARTS LISTVARIABLE MANUALLY-CONTROLLED MODELS

VFN18MVVFN24MVVFN30MV

This list contains replaceable parts used in your heater. When ordering parts, follow theinstructions listed under Replacement Parts on page 22 of this manual.

KEY PART NUMBER FORNO. VFN18MV VFN24MV VFN30MV DESCRIPTION QTY.

1L 105241-01 105241-02 105998-01 Left Front Log (#1L) 11R - 105241-03 105999-01 Right Front Log (#1R) 12 105243-01 105243-02 106000-01 Bottom Middle Log (#2) 13 105245-01 105245-02 106001-01 Rear Log (#3) 14 105249-01 105249-02 106002-01 Top Middle Log (#4) 15 105247-01 105247-02 106003-01 Crossover Log (#5) 16 101330-01 101330-05 101330-06 Front Burner Assembly 1 6-1 101008-01 101008-01 101008-01 Crossover Burner Gasket 1 6-2 101007-01 101007-01 101007-01 Crossover Burner 17 100999-01 100999-05 100999-06 Rear Burner Assembly 18 101331-10 101331-08 101331-09 Base Assembly (Includes Decals) 19 098271-07 098271-06 098271-06 Ignitor Cable 110 102445-01 102445-01 102445-01 Piezo Ignitor 111 098867-09 098867-09 098867-09 Gas Regulator 112 M11084-38 M11084-38 M11084-38 Screw 213 101011-01 101011-02 101011-03 Inlet Tube 114 098354-01 098354-01 098354-01 Control Knob 115 098462-03 098462-03 098462-03 Control Rod 116 098325-01 098325-01 098325-01 Roll Pin 117 098508-01 098508-01 098508-01 Valve Retainer Nut 118 102568-01 102568-01 102568-01 Gas Valve 119 101005-01 101005-01 101005-01 Valve Bracket 120 M11084-26 M11084-26 M11084-26 Screw 421 101004-11 101004-11 101004-04 Rear Burner Injector 122 101004-11 101004-08 101004-08 Front Burner Injector 123 102258-01 102258-01 102258-01 Burner Tube 124 099387-08 099387-08 099387-08 Pilot Tube 125 098276-01 098276-01 098276-01 1/8" Plug 126 103042-01 103042-01 103042-01 O.D.S. Pilot 1 26-1 098594-01 098594-01 098594-01 Ignitor Electrode 1 26-2 098593-01 098593-01 098593-01 Thermocouple 127 098249-01 098249-01 098249-01 Nut 428 101006-01 101006-01 101006-01 Pilot Bracket 1

PARTS AVAILABLE — NOT SHOWN

100563-01 100563-01 100563-01 Warning Plate 1101055-02 101055-02 101055-02 Lighting Instructions Plate 1100565-01 100565-01 100565-01 Warning Plate Fastener 1100639-01 100639-01 100639-01 Caution Decal 1101137-03 101137-03 101137-01 Hardware Kit 1GA6060 GA6060 GA6060 Lava Rock 1

22 105070


Note: Use only original replacement parts.This will protect your warranty coverage forparts replaced under warranty.

PARTS UNDER WARRANTYContact authorized dealers of this product.If they can’t supply original replacementpart(s), call Fireplace ManfuacturersIncorporated’s Technical Service Depart-ment at 1-888-427-8322.

When calling Fireplace Manufacturers In-corporated, have ready

• your name

• your address

• model and serial numbers of your heater

• how heater was malfunctioning

• type of gas used (propane/LP or naturalgas)

• purchase date

Usually, we will ask you to return the defec-tive part to the factory.

PARTS NOT UNDERWARRANTYContact authorized dealers of this product.If they can’t supply original replacementpart(s), call Fireplace ManufacturersIncorporated’s Parts Department at 1-800-888-2050.

When calling Fireplace Manufacturers In-corporated, have ready

• model number of your heater

• the replacement part number

REPLACEMENTPARTS

ACCESSORIESPurchase these heater accessories from yourlocal dealer. If they can not supply theseaccessories, call Fireplace ManufacturersIncorporated’s Parts Department at 1-800-888-2050 for referral information. You canalso write to the address listed on the backpage of this manual.

FIREPLACE HOODBlack - HDABK (Part No. 01244)Brass - HDABR (Part No. 01245)

For all models. Helps deflect heat awayfrom mantel or wall above fireplace. Fitsopenings 28" to 48" wide.

DAMPER CLAMP - 02017(Not Shown)

For manually controlled models. Perma-nently opens chimney flue damper for ventedoperation.

LAVA ROCK - GA6060(Not Shown)

For all models. Order when additional rockis desired. (3 1/2 lb. bag)

TECHNICALSERVICEYou may have further questions about in-stallation, operation, or troubleshooting.

If so, contact Fireplace ManufacturersIncorporated’s Technical Service Depart-ment at 1-888-427-8322.

You can also visit DESA International’stechnical service web site atwww.desatech.com.

When Gas Pressure Is Too Low• pilot will not stay lit

• burners will have delayed ignition

• heater will not produce specified heat

When Gas Quality Is Bad• pilot will not stay lit

• burners will produce flames and soot

• heater will backfire when lit

You may feel your gas pressure is too low orgas quality is bad. If so, contact your localnatural gas supplier.

SERVICE HINTS

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OWNERS MANUAL

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LIMITED WARRANTYVENT-FREE NATURAL GAS LOG HEATERS

DESA International warrants this product to be free from defects in materials and components for one (1) year from the date of firstpurchase, provided that the product has been properly installed, operated and maintained in accordance with all applicableinstructions. 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 heaterto proper operating condition and an allowance for labor when provided by a DESA International's Authorized Service Center.Warranty part(s) MUST be obtained through authorized dealers of this product and/or DESA International who will provide originalfactory replacement parts. Failure to use original factory replacement parts voids this warranty. The heater MUST be installed bya 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 becomedamaged 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 THEPRODUCT; THIS EXPRESS WARRANTY EXCLUDES ANY AND ALL OTHER EXPRESSED WARRANTIES ANDLIMITS THE DURATION OF ANY AND ALL IMPLIED WARRANTIES, INCLUDING WARRANTIES OF MERCHANTA-BILITY AND FITNESS FOR A PARTICULAR PURPOSE TO ONE (1) YEAR ON ALL COMPONENTS FROM THE DATEOF FIRST PURCHASE; AND DESA INTERNATIONAL’S LIABILITY IS HEREBY LIMITED TO THE PURCHASE PRICEOF THE PRODUCT AND DESA INTERNATIONAL SHALL NOT BE LIABLE FOR ANY OTHER DAMAGES WHATSO-EVER 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 consequentialdamages, 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:

KEEP THIS WARRANTY

WARRANTY INFORMATION

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 writtenwarranty. We make no other warranty, expressed or implied.

105070-01Rev. E11/01NOT A UPC

105070 01

2701 Industrial DriveP.O. Box 90004Bowling Green, KY 42102-9004

www.desatech.com

INTERNATIONAL

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