Desa VFRMV18PA, VFRMV18NA, VFRMV24PA User Manual

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UNVENTED (VENT FREE) GAS LOG HEATER

OWNER’S OPERATION AND INSTALLATION MANUAL

ANSI Z21.11.2a-2003

ANSI Z21.60-2003

APPROVED

VFRMV18NA, VFRMV18PA VFRMV24NA, VFRMV24PA

Vent-free Models Also Design-Certiﬁed

As Vented Decorative Appliances

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 quali-

ﬁed installer, service agency or the gas supplier.

Save this manual for future reference.

For more information, visit www.desatech.com

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

WARNING: This appliance is for installation only in a solid-fuel burning masonry or UL127 factory-built ﬁreplace or in a listed ventless ﬁrebox enclosure. It is design-certiﬁed for these installations in accordance with ANSI Z21.11.2. Exception: Do not install this appliance in a factory-built ﬁreplace that includes instructions stating it has not been tested or should not be used with unvented gas logs.

WARNING: This is an unvented gas-ﬁred heater. It uses air (oxygen) from the room in which it is installed. Provisions for adequate combustion and ventilation air must be provided. Refer to Air for Combustion and Ventilation section on page 6 of this manual.

This appliance may be installed in an aftermarket,* permanently located, manufactured (mobile) home, where not prohibited by local codes.

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

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

TABLE OF CONTENTS

Safety Information ............................................... 3

Product Identiﬁcation ...........................................

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

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

Optional Remote Control Accessories .................

Product Features ................................................. 5

Air For Combustion and Ventilation .....................

Installation ........................................................... 8

Operating Heater ............................................... 16

Inspecting Burners ............................................ 19

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Cleaning and Maintenance ................................ 20

Wiring Diagram .................................................. 21

Troubleshooting .................................................

Speciﬁcations ....................................................

Replacement Parts ............................................ 26

Service Hints ..................................................... 26

Technical Servi

Accessories ....................................................... 26

Illustrated Parts Breakdown and Parts List ....... 28

Warranty Information .........................................

ce .............................................. 26

114745-01B

22 26

SAFETY INFORMATION

IMPORTANT: Read this owner’s manual carefully and completely before trying to assemble, operate or service this log set. Improper use of this log set can cause serious injury or death from burns, fire, explosion, electrical shock and carbon monoxide poisoning.

WARNING: Do not allow fans to blow directly into the ﬁreplace. Avoid any drafts that alter burner ﬂame patterns. Ceiling fans can create drafts that alter burner ﬂame patterns. Altered burner patterns can cause sooting.

WARNING: Do not place log scraps or lava rocks on burner

DANGER: Carbon monoxide

poisoning may lead to death!

Carbon Monoxi de Poisoning : Early signs of

carbon monoxide poisoning resemble the ﬂu, with headaches, dizziness or nausea. If you have these signs, the log set may not be working properly. Get fresh air at once! Have log set serviced. Some people are more affected by carbon monoxide than others. These include pregnant women, people with heart or lung disease or anemia, those under the inﬂuence of alcohol and those at high altitudes.

Natural & Propane/LP Gas: Natural & Propane/LP

gas are odorless. An odor-making agent is added to the gas. The odor helps you detect a gas leak. However, the odor added to the gas can fade. Gas may be present even though no odor exists.

Make certain you read and understand all warnings. Keep this manual for reference. It is your guide to safe and proper operation of this log set.

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

WARNING: Do not use a blower insert, heat exchanger insert or other accessory not approved for use with this appliance.

WARNING: This appliance is equipped with (natural or propane/LP) gas. Field conversion is not permitted.

Due to high temperatures, the appliance should be located out of trafﬁc and away from furniture and draperies.

Do not place clothing or other ﬂammable material on or near the appliance. Never place any objects on the heater.

Heater assembly becomes very hot when running heater. Keep children and adults away from hot surface to avoid burns or clothing ignition. Heater will remain hot for a time after shutdown. Allow surface to cool before touching.

Carefully supervise young children when they are in the room with appliance. When using the hand-held remote accessory, keep selector switch in the OFF position to prevent children from turning on burners with remote.

You must operate this heater with a ﬁreplace screen in place. Make sure ﬁreplace screen is closed before running heater.

114745-01B 3

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SAFETY INFORMATION

Continued

Keep the appliance area clear and free from combustible materials, gasoline and other ﬂam mable vapors and liquids.

Solid fuels shall not be burned in a ﬁreplace in which an unvented room heater installed.

Children and adults should be alerted to the hazard of high temperature and should stay away to avoid burns or clothing ignition.

1. This appliance, as supplied, is only for use with the type of gas indicated on the rating plate. This appliance is not convertible for use with other gases.

2. Do not place propane/LP supply tank(s) in side the structure.Locate propane/LP supply tank(s) outdoors (propane/LP units only).

3. 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

neighborʼs phone. Follow the gas supplierʼs instructions

• if you cannot reach your gas supplier, call

the ﬁre department

4. This heater shall not be installed in a bedroom or bathroom, unless installed as a vented appli ance. See Installing Damper Clamp Accessory for Vented Operation, page 12.

5. Before installing in a solid fuel burning ﬁreplace, the chimney ﬂue and ﬁrebox must be cleaned of soot, creosote, ashes and loose paint by a qualiﬁed chimney cleaner. Creosote will ignite if highly heated. Inspect chimney ﬂue for damage. If dam aged, repair ﬂue before operating appliance.

6. If ﬁreplace has glass doors, never operate with glass doors closed, If you operate heater with doors closed, heat buildup inside ﬁreplace will cause glass to burst. Also if ﬁreplace opening has vents at the bottom, you must open the vents before operating heater.

7. To prevent the creation of soot, follow the instruc tions in Cleaning and Maintenance, page 20.

8. Before using furniture polish, wax, carpet cleaner or similar products, turn heater off. If heated, the vapors from these products may create a white powder residue within the burner box or on adjacent walls and furniture.

9. This heater needs fresh, outside air ventilation to run properly this heater has an Oxygen De pletion Sensing (ODS) safety shutoff system. The ODS shuts down the heater if enough fresh air is not available. See Air Combustion and Ventilation page 6. If the heater keeps shutting off, see Troubleshooting, page 22.

10. Do not run heater

• where ﬂammable liquids or vapors are used

or stored

• under dusty conditions

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

12. Do not use heater if any part has been exposed to or under water. Immediately call a qualiﬁed service technician to inspect the room heater and to replace any part of the control system and any gas control which has been under water.

13. Do not operate heater if any log is broken. Do not operate heater if a log is chipped (dimesize or larger).

14. Turn heater off and let cool before servicing, installing or repairing. Make sure the selector switch is in the OFF position. Only a quali ﬁed service person should install, service or repair heater.

15. Make sure the selector switch is in the OFF position when you are away from home for long periods of time.

16. Remote-ready heaters shall not be connected to any external electrical source.

17. Operating heater above elevations of 4,500

feet may cause pilot outage.

18. To prevent performance problems, do not use propane/LP tank(s) of less than 100 lb. capac ity (propane/LP units only).

19. Prov ide adeq ua te clearan ce s around air openings.

WARNING: Failure to position the parts in accordance with these diagrams or failure to use only parts speciﬁcally approved with this heater may result in property damage or personal injury.

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114745-01B

PRODUCT

IDENTIFICATION

Log Set

Lava Rock

Chassis Assembly

Figure 1 - Product Identiﬁcation

LOCAL CODES

Install and use the heater 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/NFPA 54*

*Available from:

American National Standards Institute, Inc.

1430 Broadway

New York, NY 10018

National Fire Protection Association, Inc.

Battery march park Quincy, MA 02269

Note: Where listed vented decorative logs are required, thermostat operations is not permitted. The installation of appliances designed for manu factured home (U.S. only) or mobile home instal lation must conform with the Standard CAN/CSA Z240 MH, Standard, Title 24 CFR, Part 3280, in the United States or when such a Standard is not applicable, ANSI/NCSBCS A225.1/NFPA 501A Manufactured Home Installations Standard.

State of Massachusetts: The installation must be made by a licensed plumber or gas ﬁtter in the Commonwealth of Massachusetts.

Sel lers of unvented propane or natural gas-ﬁred supplemental room heaters shall provide to each purchaser a copy of 527 CMR 30 upon sale of the unit.

Vent-free gas products are prohibited for bedroom and bathroom installation in the Commonwealth of Massachusetts.

UNPACKING

CAUTION: Do not remove the data plates from the grate assembly. The data plates contain important warranty and safety information.

1. Remo ve log set asse mbly from car ton .

Note: Do not pick up assembly by logs. This could damage the unit. Always handle assembly by grate.

2. Remove all protective packaging applied to log set for shipment.

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

OPTIONAL REMOTE

CONTROL ACCESSORIES

There are four optional remote controls that can be purchased separately:

Wall switch Hand-held ON/OFF remote

Wall thermostat Hand-held thermostat remote

See Accessories, page 26

The wall thermostat or hand-held thermostat may not be used where vented decorative listings is required.

PRODUCT FEATURES

OPERATION

This heater is clean burning. It requires no outside venting. There is no heat loss out a vent or up a chimney. Heat is generated by both realistic ﬂames and glowing coals. This heater is designed for vent-free operation with ﬂue damper closed. It has been tested and approved to ANSI Z21.11.2 standard for unvented heaters. State and local codes in some areas prohibit the use of vent-free heaters. This heater may also be operated as a vented decorative (ANSI Z21.60) product by opening the ﬂue damper.

SAFETY DEVICE

This heater has a pilot with an Oxygen Depletion Sensing (ODS) safety shut off system. The ODS/pilot is a required feature for vent-free room heaters. The ODS/pilot shuts off the heater if there is not enough fresh air.

PIEZO IGNITION SYSTEM

This heater has a piezo ignitor. This system requires no matches, batteries or other sources to light heater.

114745-01B 5

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AIR FOR COMBUSTION

AND VENTILATION

WARNING: This heater shall not be installed in confined space or unusually tight construction unless provisions are provided for adequate combustion and ventilation air. Read the following instructions to insure proper fresh air for this and other fuel-burning appliances in your home.

Todayʼs homes are built more energy efﬁcient than ever. New materials, increased insulation and new construction methods help reduce heat loss in homes. Home owners weather strip and caulk around windows and doors to keep the cold air out and the warm air in. During heating months, home owners want their homes as airtight as possible.

While it is good to make your home energy efﬁ cient, your home needs to breathe. Fresh air must enter your home. All fuel-burning appliances need fresh air for proper combustion and ventilation.

Exhaust fans, ﬁreplaces, clothes dryers and fuel burning appliances draw air from the house to operate. You must provide adequate fresh air for these appliances. This will insure proper venting of vented fuel-burning appliances.

PROVIDING ADEQUATE VENTILATION

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

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

1. Unusually Tight Construction

2. Unconﬁned Space

3. Conﬁned Space

The information on pages 6 through 8 will help you classify your space and provide adequate ventilation.

Unusually Tight Construction

The air that leaks around doors and windows may provide enough fresh air for combustion and 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 out-

side atmosphere have a continuous water vapor retarder with a rating of one perm (6 x 10-11 kg per pa-sec-m2) or less with openings gasketed or sealed and

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 ad ditional fresh air. See Ventilation Air From Outdoors, page 6.

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

Fresh-Air Flow For Appliance Location

Conﬁned and Unconﬁned Space

The National Fuel Gas Code, ANSI Z223.1/NFPA 54 deﬁnes a conﬁned space as a space whose vol

ume is less than 50 cubic feet per 1,000 Btu per hour (4.8 m3 per kw) of the aggregate input rating of all appliances installed in that space and an unconﬁned space as a space whose volume is not less than 50 cubic feet per 1,000 Btu per hour (4.8 m3 per kw) of the aggregate input rating of all appliances installed in that space. Rooms communicating directly with the space in which the appliances are installed*, through openings not furnished with doors, are considered a part of the unconﬁned space.

* Adjoining rooms are communicating only if

there are odorless passageways or ventilation grills

between them.

DETERMINING FRESH-AIR FLOW FOR APPLIANCE 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 appliance plus any adjoining rooms with doorless passageways or ventilation grills between the rooms.

and

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114745-01B

AIR FOR COMBUSTION

AND VENTILATION

Continued

1. Determine the volume of the space (length x width x height).

Length x Width x Height = ________

(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 sup plied with grills or openings, add the volume of these rooms to the total volume of the space.

2. Multiply the space volume by 20 to determine the maximum Btu/Hr the space can support.

_____ _____ __(vo lume of space) x 20 =

(Maximum Btu/Hr the space can support)

Example: 2560 cu. ft. (volume of space) x

20 = 51,200 (maximum Btu/Hr the space can support)

3. Add the Btu/Hr of all fuel burning appliances in the space.

Vent-free appliance

Gas water appliance*

Gas furnace

Vented gas appliance

Gas ﬁreplace logs

Other gas appliances* +

Total =

* Do not include direct-vent gas appliances.

Direct-vent draws combustion air from the outdoors and vents to the outdoors.

Example:

Gas water appliance

Vent-free appliance +

Total =

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)

_________Btu/Hr

40,000

_________Btu/Hr

33,000

_________Btu/Hr

73,000

_________Btu/Hr

cu. ft.

The space in the previous 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 adjoining room or add ventilation grills between rooms. See Ventilation Air From Inside Building.

B. Vent room directly to the outdoors. See Ven

tilation Air From Outdoors,

C. Install a lower Btu/Hr appliance, if lower

Btu/Hr size makes room unconﬁned.

If the actual Btu/Hr used is less than the

maximum Btu/Hr the space can support, the space is an unconﬁned space. You will need no additional fresh air ventilation.

page 8.

WARNING: If the area in which the appliance may be operated is smaller than that deﬁned as an unconﬁned space or if the building is of unusually tight construction, provide adequate combustion and ventilation air by one of the methods described in the National Fuel Gas Code, ANSI Z223.1/NFPA 54 Section 5.3 or applicable local codes.

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 2 on page 8). You can also remove door into adjoining room (see option 3, Figure 2). Follow the National

Fuel Gas Code, ANSI Z223.1/NFPA 54, Section

5.3, Air for Combustion and Ventilation for re-

quired size of ventilation grills or ducts.

114745-01B 7

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AIR FOR COMBUSTION

Outlet Air

Ventilated Attic

Outlet

Inlet Air

ntilated

Crawl Space

To Crawl Space

To Attic

Remove Door into Adjoining

Room, Option

Ventilation Grills

Into Adjoining Room,

Option

ntilation Grills

Into Adjoining

Room,

Option 1

12"

AND VENTILATION

Continued

INSTALLATION

NOTICE: This heater is intended for use as supplemental heat. Use this heater along with your primary heating system. Do not install this heater as your primary heating source. If you have a central heating system, you may run system's circulating blower while using heater. This will help circulate the heat throughout the house. In event of a power outage, you can use this heater as your primary heat source.

Figure 2 - 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. Follow the

National Fuel Gas Code, ANSI Z223.1/NFPA 54, Section 5.3, Air for Combustion and Ventilation for

required size of ventilation grills or ducts. IMPORTANT: Do not provide openings for inlet

or outlet air into attic if attic has a thermostatcontrolled power vent. Heated air entering the attic will activate the power vent.

Figure 3 - Ventilation Air from Outdoors

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WARNING: A qualiﬁed service person must install heater. Follow all local codes.

NOTICE: State or local codes may only allow operation of this appliance in a vented conﬁguration. Check your state or local codes.

WARNING: Make sure the selector switch is in the OFF position before installing heater.

WARNING: Before installing in a solid fuel burning ﬁreplace, the chimney ﬂue and ﬁrebox must be cleaned of soot, creosote, ashes and loose paint by a qualiﬁed chimney cleaner. Creo

sote will ignite if highly heated. A dirty chimney ﬂue may create and distribute soot within the house. Inspect chimney ﬂue for damage. If damaged, repair ﬂue damper before operating appliance.

114745-01B

INSTALLATION

Continued

WARNING: Seal any fresh air vents or ash clean-out doors located on ﬂoor or wall of ﬁreplace. If not, drafting may cause pilot outage or sooting. Use a heat-resistant sealant. Do not seal chimney ﬂue damper.

WARNING: Never install the heater

• in a bedroom or bathroom

unless installed as a vented appliance, see page 12

• in a recreational vehicle

• where curtains, furniture,

clothing or other ﬂammable objects are less than 42 inches from the front, top or sides of heater

• in high trafﬁc areas

• in windy or drafty areas

CAUTION: This heater creates warm air currents. These currents move heat to wall sur faces next to heater. Installing heater next to vinyl or cloth wall coverings or operating heater where impurities (such as, but not limited to, tobacco smoke, aromatic candles, cleaning ﬂuids, oil or kerosene lamps, etc..) in the air exist, may discolor walls or cause odors.

IMPORTANT: Vent-free heaters add moisture to the air. Although this is beneﬁcial, installing heater in rooms without enough ventilation air may cause mildew to form from too much moisture. See Air

for Combustion and Ventilation

CHECK GAS TYPE

Use the correct gas type (natural or propane/LP) for your unit. If your gas supply is not correct, do not install in ﬁreplace. Call dealer where you bought the appliance for proper type of appliance.

, page 6.

WARNING: This appliance is equipped for (natural or propane/LP) gas. Field conversion is not permitted.

INSTALLATION AND CLEARANCES FOR VENT-FREE OPERATION

WARNING: Maintain the minimum clearances. If you can, provide greater clearances from ﬂoor, ceiling and adjoining wall.

MINIMUM FIREPLACE CLEARANCE

TO COMBUSTIBLE MATERIALS

LOG SIZE 18", 24"

SIDE WALL 16"

CEILING 42"

FLOOR 5"

LOG SIZING REQUIREMENTS

MINIMUM FIREBOX SIZE LOG FRONT REAR

SIZE HEIGHT DEPTH WIDTH WIDTH

18" 18" 14" 30" 20.5" 24" 18" 14" 35" 24.5"

*Measured at 14" depth

Allow adequate clearances for accessibility for purposes of servicing and proper operation

Carefully follow the instructions below. This will ensure safe installation into masonry, UL127-listed manufactured ﬁreplace or listed vent-free ﬁrebox.

Minimum Clearances For Side Combustible Material, Side Wall and Ceiling

A. Clearances from the side of the fireplace

cabinet to any combustible material and wall should follow diagram in Figure 4, page 10.

Example: The face of a mantel, bookshelf,

etc.. is made of combustible material must be 4" from the side of the ﬁreplace to the cabinet (see Figure 4, page 10).

B. Clearances from the top of the ﬁreplace open

ing to the ceiling should not be less than 42 inches.

114745-01B 9

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INSTALLATION

Heat Resistant Material

(A)

Continued

Example

*Minimum 16 inches from Side Wall

Figure 4 - Minimum Clearance for

Combustible to Wall

NOTICE: Non thermostat controlled heaters may be used as a vented product. If so, you must always run heater with chimney ﬂue damper open and damper clamp installed. If running heater with damper open, noncombustible material above the ﬁreplace opening is not needed. Go to

Installing Damper Clamp Accessory for Vented Operation,

page 12.

Noncombustible Re q u i r emen t s for Material Distance (A) Safe Installation

12" or more N o n c o m b u s t i b l e material OK.

Between 8" and 12" 24" Models: Install ﬁreplace hood

accessory (GA6050, GA6052, GA6053, see Accessories, page 26).

18" Model: Noncom bustible material OK.

Less than 8" Noncombustible m a t e ri a l m u st be

extended to at least 8". See Between 8" and 12 " , above . If yo u cannot extend material, yo u m u s t op er a t e heater with ﬂue damper o p e n. a nd da m p er clamp installed

Minimum Noncombustible Material Clearances

If Not Using Mantel

Note: If using a mantel proceed to If Using Man- tel. If not using mantel, follow the information

on this page.

You must have noncombustible material(s) above the ﬁreplace opening. Noncombustible materials (such as slate, marble, tile, etc..) Must be at least 1/2 inch thick. With sheet metal, you must have noncombustible material behind it. Noncombus tible material must extend at least 8" up (for all models). If noncombustible material is less than 12", you must install the ﬁreplace hood accessory (24" Models Only). See Figure 5 for minimum clearances.

Figure 5 - Heat Resistant Material (Slate,

Marble, Tile, etc.) Above Fireplace

If Using Mantel

You must have noncombustible material(s) above the ﬁreplace opening. Noncombustible materials (such as slate, marble, tile, etc.) must be at least 1/2 inch thick. With sheet metal, you must have noncombustible

material behind it. Noncombustible material must extend at least 8 inches up (for all models). If noncombustible material is less than 12", you must install the ﬁreplace hood accessory (24" Models Only). Even if noncombustible material is more than 12", you may need the hood accessory to deﬂect heat away from your mantel shelf. See Figure 5 and Figures 6 and 7, page 11, for minimum clearances.

IMPORTANT: If you cannot meet these minimum clearances, you must operate heater with chimney ﬂue damper open. Go to Installing Damper Clamp

Accessory for Vented Operation

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, page 12.

114745-01B

INSTALLATION

Minimum NonCombustible Material

Minimum NonCombustible Material Height

Distances to Underside of Mantel

p of Fireplace

Opening

Underside of Mantel Shelf

12"

(A)

28"

34 1/2"

38 5/8"

42"

All minimum distances are in inches

2 1/2"

10"

Mantel Shelf

Minimum NonCombustible Material

8" Min.

14 1/2"

18 5/8"

22 1/2"

All minimum distances are in inches

26"

2 1/2"

10"

12"

Distances to Underside of Mantel

Hood (GA6050, GA6052 or GA6053)

p of Fireplace

Opening

Underside of Mantel Shelf

14" Min.

Combustible Material

Noncombustible Material

Hearth

5" Min.

Combustible Material

Continued

MANTEL CLEARANCES

In addition to meeting noncombustible material clearances, you must also meet required clearances between ﬁreplace opening and mantel shelf. If you do not meet the clearances listed below, you will need a hood.

Determining Minimum Mantel Clearance

If you meet minimum clearance between mantel shelf and top of ﬁreplace opening, a hood is not required (see Figure 6).

Determining Minimum Mantel Clearance When Using a Hood

If minimum clearances in Figure 6 are not met, you must have a hood. When using a hood there are still certain minimum mantel clearances required. Follow minimum clearances shown in Figure 7 when using hood.

NOTICE: Surface temperatures of adjacent walls and mantels become hot during operation. Walls and mantels above the ﬁrebox may become hot to the touch. If installed properly, these temperatures meet the requirement of the national product standard. Follow all minimum clearances shown in this manual.

NOTICE: If your installation does not meet the minimum clearances shown, you must do one of the following:

• operate the logs only with the

ﬂue damper open and damper clamp installed

• raise the mantel to an ac

ceptable height

• remove the mantel

FLOOR CLEARANCES

A. If installing appliance on the ﬂoor level, you

must maintain the minimum distance of 14" to combustibles (see Figure 8).

B. If combustible materials are less than 14" to

the ﬁreplace, you must install appliance at least 5" above the combustible ﬂooring (see Figure 9).

Figure 6 - Minimum Mantel Clearances

Without Using Hood

Figure 8 - Minimum Fireplace Clearances

If Installed at Floor Level

Figure 7 - Minimum Mantel Clearances

114745-01B 11

When Using Hood

Figure 9 - Minimum Fireplace Clearances

Above Combustible Flooring

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INSTALLATION

Continued

INSTALLING DAMPER CLAMP ACCESSORY FOR VENTED OPERATION

Note: When used as a vented decorative, appliance must be installed only in a solid-fuel burning ﬁreplace with a working ﬂue and constructed of noncombustible material.

If your heater is a non-thermostatically-controlled model, you may use this heater as a vented product. There are three reasons for operating your heater in the vented mode.

1. The ﬁreplace does not meet the clearance to combustibles requirements for vent-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 ﬂue damper. You must install the damper clamp accessory (to order, see Accessories, page 26). This will insure vented operation (see Figure 10). The damper clamp will keep damper open. Installation instructions are included with clamp accessory.

Damper Clamp

Damper

See chart below for minimum permanent ﬂue opening you must provide. Attach damper clamp so the minimum permanent ﬂue opening will be maintained at all times.

Area of Various Standard

Round Flues

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

5" 20 sq. inches

6" 29 sq. inches

7" 39 sq. inches

8" 51 sq. inches

Chimney Minimum Permanent Height (ft.) Flue Opening (sq. ins.)

6' to 15' 39 sq. inches

15' to 30' 29 sq. inches

INSTALLING HEATER ASSEMBLY

WARNING: If installing in a sunken ﬁreplace, special care is needed. You must raise the ﬁreplace ﬂoor to allow access to heater control panel. This will insure adequate air ﬂow and guard against sooting. Raise ﬁreplace ﬂoor with noncombustible material. Make sure material is secure.

Masonry

Fireplace

Manufactured

Fireplace

Figure 10 - Attaching Damper Clamp

www.desatech.com

CAUTION: Do not pick up heater assembly by logs. This could damage unit. Only handle assembly by grates.

IMPORTANT: Make sure the heater burners are level. If heater is not level, heater will not work properly.

Installation Items Needed

• control cover kit (provided with heater)

• approved ﬂexible gas hose and ﬁttings (pro vided with heater) (if allowed by local codes)

• sealant (res is tant to pro pane/LP gas, not provided)

114745-01B

INSTALLATION

Continued

Note: Install optional GHRCTB Receiver and Hand-Held Remote Control Kit (see Accessories page 26) before installing gas log heater. See in stallation instructions included with the kit.

1. App ly pipe joint sealant light ly to male threads of gas ﬁtting (not provided). Connect approved ﬂexible gas hose to inlet side of gas control (see Figure 11).

2. Position heater assembly in ﬁreplace.

3. Connect to gas supply. See Connecting To

Gas Supply

Flexible Gas Hose (if allowed by local codes)

Figure 11 - Attaching Flexible Gas Hose

CONNECTING TO GAS SUPPLY

WARNING: This appliance

Gas Control Valve

to Heater Gas Regulator

Installation Items Needed

Before installing heater, make sure you have the items listed below.

• external regulator (supplied by installer)

• piping (check local codes)

• sealant (resistant to propane/LP gas)

• equipment shutoff valve *

• test gauge connection *

• sediment trap

• tee joint

• pipe wrench

• approved ﬂexible gas line with gas connector (if allowed by local codes) (provided)

* A CSA design-certiﬁed equipment shutoff valve with 1/8" NPT tap is an acceptable alternative to test gauge connection. Purchase the optional CSA design-certiﬁed equipment shutoff valve from your dealer. See

For propane/LP units, the installer must supply an external regulator. The external regulator will reduce incoming gas pressure. You must reduce incoming gas pressure to between 11 and 14 inches of water. If you do not reduce incoming gas pres sure, heater regulator damage could occur. Install external regulator with the vent pointing down as shown in Figure 12. Pointing the vent down protects it from freezing rain or sleet.

Accessories, page 26.

requires a 3/8" NPT (National Pipe Thread) inlet connection to the pressure regulator.

CAUTION: Use only new, black iron or steel pipe. Internally-tinned copper tubing may

WARNING: A qualiﬁed service person must connect heater to gas supply. Follow all local codes.

CAUTION: Never connect propane/LP ﬁreplace directly to the propane/LP supply. This heater requires an external regu lator (not supplied). Install the

be used in certain areas. Check your local codes. Use pipe of 1/2" diameter or greater to allow proper gas volume to heater. If pipe is too small, undue loss of volume will occur.

External Regulator

Propane/LP Supply Tank

external regulator between the heater and propane/LP supply.

Vent

WARNING: Never connect

Pointing Down

natural gas ﬁreplace to private (non-utility) gas wells. This gas is commonly known as wellhead gas.

114745-01B 13

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Figure 12 - External Regulator With Vent

Pointing Down

INSTALLATION

Continued

Installation must include an equipment shutoff valve, union and plugged 1/8" NPT tap. Locate NPT tap within reach for test gauge hook up. NPT tap must be upstream from heater (see Figure 13).

IMPORTANT: Install equipment shutoff valve in an accessible location within 6 feet of the appli ance. The equipment shutoff valve is for turning on or shutting off the gas to the appliance.

Apply pipe joint sealant lightly to male NPT threads. This will prevent excess sealant from going into pipe. Excess sealant in pipe could result in clogged heater valves.

WARNING: Use pipe joint sealant that is resistant to liquid petroleum (LP) gas.

We recommend that you install a sediment trap in supply line as shown in Figure 13, depending on your model. Locate sediment trap where it is within reach for cleaning. Install in piping system between fuel supply and heater. Locate sediment trap where trapped matter is not likely to freeze. A sediment trap traps moisture and contaminants. This keeps them from going into heater controls. If sediment trap is not installed or is installed wrong, heater may not run properly.

Approved Flexible Gas Hose (if allowed by local codes)

CAUTION: Avoid damage to gas control. Hold gas control with wrench when connecting it to gas piping and/or ﬁttings.

CHECKING GAS CONNECTIONS

WARNING: Test all gas piping and connections for leaks after installing or servicing. Correct all leaks at once.

WARNING: Never use an open ﬂame to check for a leak. Apply a noncorrosive leak detection ﬂuid to all joints. Bubbles forming show a leak. Correct all leaks at once.

CAUTION: Make sure external regulator has been installed between propane/LP supply and heater. See guide lines under Connecting to Gas

Supply

, page 13.

To Gas Control Valve

* Purchase the optional CSA design-certiﬁed equipment shutoff valve from your dealer. See Accessories, page 26.

**Minimum inlet pressure for purpose of input adjustment.

CSA Design-Certiﬁed Equipment Shutoff Valve With 1/8" NPT Tap*

3" Minimum

Tee Pipe Cap Joint Nipple

Sediment Trap

Figure 13 - Gas Connection (Remote-Ready Models Only)

www.desatech.com

Propane/LP - From External Regulator (11" W.C.** To 14" W.C. Pressure)

Natural - From Gas Meter (5" W.C.** To 10.5" W.C. Pressure)

114745-01B

INSTALLATION

Continued

PRESSURE TESTING GAS SUPPLY PIPING SYSTEM

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

1. Disconnect appliance with its appliance main gas valve (control valve) and equipment shutoff valve from gas supply piping system. Pressures in excess of 1/2 psig will damage heater regulator.

2. Cap off open end of gas pipe where equipment shutoff valve was connected.

3. Pressurize supply piping system by either opening propane/LP supply tank valve for propane/LP gas or opening main gas valve located on or near gas meter for natural gas or using compressed air.

4. Check all joints of gas supply piping system. Apply noncorrosive leak detection ﬂuid to all joints. Bubbles forming show a leak.

5. Correct all leaks at once.

6. Reconn ect heate r and equi pment shutoff valve to gas supply. Check reconnected ﬁt tings for leaks.

Test Pressures Equal To or Less Than 1/2 PSIG (3.5 kPa)

1. Close equipment shutoff valve (see Figure 14).

2. Pressurize supply piping system by either opening propane/LP supply tank valve for propane/LP gas or opening main gas valve located on or near gas meter for natural gas or using compressed air.

3. Check all joints from gas meter to equipment shutoff valve for natural gas or propane/LP supply to equipment shutoff valve for propane/ LP (see Figure 15 or 16). Apply noncorrosive leak detection ﬂuid to all joints. Bubbles form ing show a leak.

4. Correct all leaks at once.

Equipment Shutoff Valve

Open

Propane/LP Supply Tank

Figure 15 - Checking Gas Joints

(Propane/LP Gas Only)

Gas Meter

Figure 16 - Checking Gas Joints

PRESSURE TESTING HEATER GAS CONNECTIONS

1. Open equipment shutoff valve (see Figure 14).

2. Open main gas valve located on or near gas meter for natural gas or open propane/LP supply tank valve.

3. Make sure control knob of heater is in the OFF position.

4. Check all joints from equipment shutoff valve to gas control (see Figures 15 and 16). Apply noncorrosive leak detection ﬂuid to all joints.

Bubbles forming show a leak.

5. Correct all leaks at once.

6. Light heater (see Operating Heater, page 16). Check all other internal joints for leaks.

7. Turn off heater.

Equipment Shutoff Valve

Control Valve Location

Equipment Shutoff Valve

Control Valve Location

(Natural Gas Only)

Closed

Figure 14 - Equipment Shutoff Valve

114745-01B 15

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OPERATING HEATER

FOR YOUR SAFETY READ

BEFORE LIGHTING

WARNING: If you do not follow these instructions exactly, a ﬁre or explosion may result causing property damage, personal injury or loss of life.

A. This appliance has a pilot which must be

lighted by hand. When lighting the pilot, follow these instructions exactly.

B. BEFORE LIGHTING smell all around the

appliance area for gas. Be sure to smell next to the ﬂoor because some gas is heavier than air and will settle on the ﬂoor.

WHAT TO DO IF YOU SMELL GAS

• 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 neig hbor ʼs phon e. Fo llo w the gas supplierʼs instructions.

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

C. Use only your hand to push in or turn the

gas control knob. Never use tools. If the knob will not push in or turn by hand, donʼt try to repair it, call a qualiﬁed service tech nician or gas supplier. Force or attempted repair may result in a ﬁre or explosion.

D. Do not use this appliance if any part has

been under water. Immediately call a qualiﬁed service technician to inspect the appliance and to replace any part of the control system and any gas control which has been under water.

LIGHTING

INSTRUCTIONS

WARNING

• If ﬁreplace has glass doors, never operate this heater with glass doors closed. If you op erate heater with doors closed, heat buildup inside ﬁreplace will cause glass to burst. Also if ﬁreplace opening has vents at the bottom, you must open the vents before operating heater.

• You must operate this heater with a fireplace screen in place. Make sure fireplace screen is closed before run ning heater.

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

Note: Home owners generally prefer to op-

erate their heater with the chimney damper closed. This will put all the heat into the room. However, there may be times you will desire the full ﬂames of the HI heat setting but will ﬁnd the heat output excessive. You can open the chimney damper (if you have one) fully or partially to release some of the heat.

WARNING: Damper handle will be hot if heater has been running.

1. STOP! Read the safety information, starting in column 1, of this page.

2. Make sure equipment shutoff valve is fully open.

3. Set switch in the OFF position.

4. Press in and turn control knob clockwise

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to the OFF position (see Figure 17,

page 17).

114745-01B

OPERATING HEATER

Continued

WARNING: Burners will come on automatically within one minute when the switch is in the ON position after the pilot is lit.

5. Wait ﬁve (5) minutes to clear out any gas. Then smell for gas, including near the ﬂoor. If you smell gas, STOP! Follow “B” in the safety information, starting in column 1 of this page. If you donʼt smell gas, go to the next step.

6. Press in and turn control knob counter clockwise Press in control knob for ﬁve (5) seconds (see Figure 17).

Note: You may be running this heater for

the ﬁrst time after hooking up to gas supply. If so, the control knob may need to be pressed in for 30 seconds or more. This will allow air to bleed from the gas system.

7. With control knob pressed in, press and release ignitor button. This will light pilot. The pilot is attached to the front burner. If needed, keep pressing ignitor button until pilot lights.

Note: If pilot does not stay lit, contact a

qualiﬁed service person or gas supplier for repairs. Until repairs are made, light pilot with match. To light pilot with match, see

Manual Lighting Procedure

8. Keep control knob pressed in for 30 seconds after lighting pilot. After 30 seconds, release control knob.

• If control knob does not pop out when

released, contact a qualiﬁed service person or gas supplier for repairs.

Note: If pilot goes out, repeat steps 4

through 8, page 16.

Control Knob

Flame Adjustment Knob

Figure 17 - Control Knob and Ignitor

Button Location, Manual Controlled

to the PILOT position.

, page 18.

Piezo Ignitor

Switch in OFF Position

9. Slightly push in and turn control knob coun terclockwise to the ON position.

10. Wait one minute and switch selector switch to the ON position to light burners. Note: AUTO is only funct ional whe n using GWMT1 or GWMS2 optional accessories.

11. Set ﬂame adjustment knob to any level between HI and LO.

CAUTION: Do not try to adjust heating levels by using the equipment shutoff valve.

WARNING: Make sure the selector switch is in the OFF

position when you are away from home for long periods of time. Heater will come on auto matically with selector switch in the ON position.

Pilot Burner

Propane/LP

Ignitor Electrode

Figure 18 - Pilot

Pilot Burner

TO TURN OFF GAS

TO APPLIANCE

Shutting Off Heater

1. Turn control knob clockwise to the OFF position.

2a. Set selector switch in the OFF position. 2b. If Using Optional Hand-Held Remote:

Set selector switch in the OFF position to prevent draining battery.

Shutting Off Burner Only (pilot stays lit)

You may shut off the burners and keep the pilot lit by doing one of the following:

1. Turn control knob clockwise PILOT position.

2. Use remote control manual OFF button.

3. Set selector switch in the OFF position.

Ignitor Electrode

Natural

to the

114745-01B 17

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OPERATING HEATER

REMOTE OFF ON

Continued

MANUAL LIGHTING

PROCEDURE

1. Follow steps 1 through 6 under Lighting Instructions, page 16.

2. Depress control knob and light pilot with match.

3. Keep control knob pressed in for 30 seconds after lighting pilot. After 30 seconds, release control knob. Now follow steps 9 through 11, Lighting Instructions

OPTIONAL HAND-HELD

REMOTE OPERATION

Note: All remote control accessories must be purchased separately (see Accessories, page

26). Follow instructions included with the

remote control.

NOTICE: You must light the pilot before using the hand-held remote control unit. See Instructions on page 16.

After lighting, let pilot ﬂame burn for about one minute. Turn control knob to ON posi tion. Adjust ﬂame adjustment knob anywhere between HI and LO. Slide the selector switch to the REMOTE position (see Figure 19). Note: The burner may light if hand-held remote was on when selector switch was last turned off. You can now turn the burner on and off with the hand-held remote control unit.

IMPORTANT: Do not leave the selector switch in the REMOTE or ON position when the pilot is not lit. This will drain the battery.

Control Knob

Flame Adjustment Knob

Figure 19 - Setting the Selector Switch,

Control Knob and Flame Adjustment

Knob for Remote Operation

Piezo Ignitor

, page 17.

Lighting

Selector Switch in REMOTE Position

ON/OFF SERIES (MODEL GHRCB)

Hold the control button on the hand-held remote until burner turns on. Hold the con trol button again until burner turns off (see Figure 20).

To Lock press both buttons on hand-held remote control until light stops ﬂashing. Handheld remote control is now locked. If the ﬁre is on it will be turned off automatically. In the locked state, the light will not light up when any button is pressed.

To Unlock press both buttons together on handheld remote control until the light stops ﬂashing. The hand-held remote is now unlocked.

Control Button Turns Burners On and Off

Figure 20 - On/Off Hand-Held Remote

Control Unit (GHRCB)

THERMOSTAT SERIES (MODEL GHRCTB)

The hand-held remote can be operated using either the manual mode (MANU) or thermostatic mode (AUTO) (see Figure 21, page 19). To select Fahrenheit/Centigrade mode display, carefully press the ˚C/˚F mode button with the end of a paper clip or similar blunt object.

Manual Mode

1. Press the POWER and LOCK buttons together to turn on the hand-held remote control.

2. Press the MANU button to turn on the ﬁreplace.

3. Press the POWER and LOCK buttons together to turn off the ﬁreplace.

Auto (Thermostatic) Mode

1. Press the POWER and LOCK buttons together to turn on the hand-held remote control.

2. Press AUTO button to select this mode.

3. Set the desired room temperature by press ing the TEMP + or - buttons.

4. Press the POWER and LOCK buttons together to turn off the ﬁreplace.

www.desatech.com

114745-01B

OPERATING HEATER

Continued

Note: Do not leave the hand-held remote in

the AUTO mode close to the ﬁreplace. The radiant heat from the ﬁreplace will turn off the ﬁreplace. Ideally, place the hand-held remote in the center of the room facing towards the ﬁreplace.

Note: Do not hold the hand-held remote for a long time. Body temperature will affect its operation in the AUTO mode.

Safety Features

When away from home for an extended period of time or as a child safety feature to prevent accidental ignition of the ﬁreplace, the receiver ON/OFF/REMOTE switch should be in the OFF position.

Auto Shutoff Feature

1. If the average room temperature exceeds 82 degrees Fahrenheit (28 degrees Centi grade), the hand-held remote control will perform a safety override and shut the ﬁreplace off. This feature is not available in the MANU mode.

2. The receiver continuously receives signals from the hand-held remote to control the room temperature. If the hand-held remote is misplaced, obstructed or for any reason cannot transmit to the receiver, the receiver will shut off the ﬁreplace after 8 minutes.

Key Pad Lock Feature

This feature allows the user to lock/unlock the keypad on the hand-held remote in the MANU or AUTO mode to prevent inadvertent operation (i.e. children operating the hand-held remote control, etc.). The keypad is locked in either on or off. Press the POWER and LOCK buttons together to turn the unit on or off.

INSPECTING BURNERS

Check pilot ﬂame pattern and burner ﬂame patterns often.

PILOT FLAME PATTERN

Figure 22 shows a correct pilot ﬂame pattern. Figure 23 shows an incorrect pilot ﬂame pattern. The incorrect pilot flame is not touching the thermocouple. This will cause the thermocouple to cool. When the thermocouple cools, the heater will shut down.

If pilot ﬂame pattern is incorrect, as shown in

Figure 23

• turn heater off (see To Turn Off Gas to Appli ance, page 17)

• see Troubleshooting

Note: The pilot ﬂame on natural gas units will have a slight curve, but ﬂame should be blue and have no yellow or orange color.

Pilot Burner

, page 22

Digital Display Shows Temperature and Settings

Turns Burners On or Off

Decreases Room Temperature in AUTO Mode

Figure 21 - Thermostat Hand-Held

Remote Control Unit (GHRCTB)

114745-01B 19

Locks System to Prevent Accidental Ignition

Turns HandHeld Remote On or Off and Allows You to Choose the Manual Setting

Selects Auto Setting

Increases Room Temperature in AUTO Mode

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Thermocouple

Figure 22 - Correct Pilot Flame Pattern

(Your pilot may vary from pilots shown)

Pilot Burner

Thermocouple

Figure 23 - Incorrect Pilot Flame Pattern

(Your pilot may vary from pilots shown)

INSPECTING BURNERS

Continued

BURNER FLAME PATTERN

Figure 24 shows correct burner ﬂame pattern.

NOTICE: Do not mistake orange ﬂames with yellow tipping. Dirt or other ﬁne particles are burned by heater, causing brief patches of orange ﬂame.

If burner ﬂame pattern is incorrect, as shown in Figure 25

• turn heater off (see To Turn Off Gas to Appli ance, page 17)

• see Troubleshooting

The ﬂames from the burner travel horizontally through the log set and emerge at the middle and rear of the set against the back logs.

The ﬂames are blue off the burner and as they progress through the log set, change to a light yellow color, yellow decorative ﬂames are visible as the ﬂames exit the log set.

The base of the log set and the underside of the top logs glow red. Natural gas models will burn with more blue ﬂame, while propane gas model will burn with bright yellow ﬂame.

Figure 24 - Correct Burner Flame Pattern

, page 22

Blue and Bright Yellow ﬂames

Darker Orange Flames

CLEANING AND

MAINTENANCE

WARNING: Turn off heater

and let cool before cleaning.

CAUTION: You must keep control areas, burners and circulating air passageways of heater clean. Inspect these areas of heater before each use. Have heater inspected yearly

by a qualiﬁed service person. Heater may need more frequent cleaning due to excessive lint from carpeting, pet hair, bedding material, etc.

WARNING: Failure to keep the primary air openings of the burner clean may result in soot ing and property damage.

BURNER INJECTOR HOLDER AND PILOT AIR INLET HOLE

The primary air inlet openings allow the proper amount of air to mix with the gas. This provides a clean burning ﬂame. Keep these holes clear of dust, dirt, lint and pet hair. Clean these air inlet openings prior to each heating season. Blocked air openings will create soot. We recommend that you clean the unit every three months during operation and have heater inspected yearly by a qualiﬁed service person.

We also recommend that you keep the burner tube and pilot assembly clean and free of dust and dirt. To clean these parts we recommend using compressed air no greater than 30 PSI. Your local computer store, hardware store or home center may carry compressed air in a can. You can use a vacuum cleaner in the blow position. If using com pressed air in a can, please follow the directions on the can. If you don't follow directions on the can, you could damage the pilot assembly.

Figure 25 - Incorrect Burner Flame

Pattern

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114745-01B

CLEANING AND

Thermopile

MAINTENANCE

Continued

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

2. Inspect burner, pilot and primary air inlet opening on injector holder for dust and dirt (see Figure 26).

3. Blow air through the ports/slots and holes in the burner.

4. Check the injector holder located at the end of the burner tube again. Remove any large particles of dust, dirt, lint or pet hair with a soft cloth or vacuum cleaner nozzle.

5. Blow air into the primary air opening on the injector holder.

6. In case any large clumps of dust have now been pushed into the burner repeat steps 3 and 4.

Clean the pilot assembly also. A yellow tip on the pilot ﬂame indicates dust and dirt in the pilot as sembly. There is a small pilot air inlet hole about two inches from where the pilot ﬂame comes out of the pilot assembly (see Figure 27). With the unit off, lightly blow air through the air inlet hole in the same direction as gas ﬂow. You may blow through a drinking straw if compressed air is not available.

Pilot Air Inlet Hole

Pilot Assembly

Propane/LP

Pilot Air Inlet Hole

Pilot Assembly

Natural

Figure 27 - Pilot Inlet Air Hole (Your pilot

may vary from pilots shown)

WIRING DIAGRAM

Ports Slots

Injector Holder

Burner Tube

Primary Air Inlet Opening (At bottom)

Injector

Figure 26 - Injector Holder On Outlet

Burner Tube

114745-01B 21

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TROUBLESHOOTING

WARNING: Turn off and unplug heater and let cool before servicing.

Only a qualiﬁed service person should service and repair heater.

CAUTION: Never use a wire, needle or similar object to clean

ODS/pilot. This can damage ODS/pilot unit.

Note: All troubleshooting items are listed in order of operation.

OBSERVED PROBLEM

When ignitor button is pressed, there is no spark at ODS/pilot

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

POSSIBLE CAUSE

1. Ig nitor elec trode not connected to ignitor cable

2. Ignitor cable pinched or wet

3. Piezo ignitor nut is loose

4. Broken ignitor cable

5. Bad piezo ignitor

6. Ignitor electrode positioned wrong or broken

1. Gas supply turned off or equip ment shutoff valve closed

2. Control knob not in PILOT position

3. Control knob not pressed in while in PILOT position

4. Ai r in gas lines when in stalled

5. Deple ted gas supply (pro pane/LP only)

6. ODS/pilot is clogged

7. Gas regulator setting is not correct

REMEDY

1. Reconnect ignitor cable

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

3. Tighten nut holding piezo ig nitor to base panel of log set. Nut is located behind base panel.

4. Replace ignitor cable

5. Replace piezo ignitor

6. Replace pilot assembly for remote-ready units; Replace ignitor electrode for variable manually controlled units

1. Turn on gas supply or open

equipment shutoff valve

2. Turn control knob to PILOT position

3. Press in control knob while in PILOT position

4. Continue holding down control knob. Repea t igni ti ng operation until air is removed

5. Contact local propane/LP gas company

6. Clean ODS/pilot (see Cleaning and Maintenance, page 20) or replace ODS/pilot assembly

7. Replace gas regulator

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114745-01B

OBSERVED PROBLEM

ODS/pilot lights but ﬂame goes out when control knob is re leased

TROUBLESHOOTING

Continued

POSSIBLE CAUSE

Control knob not fully pressed in

2. Control knob not pressed in

long enough

3. Safety interlock system has been triggered

4. Equipment shutoff valve not fully open

5. Pilot ﬂame not touching thermocouple, which allows ther mocouple to cool, causing pilot ﬂame to go out. This problem could be caused by one or both of the following:

A) Low gas pressure B) Dirty or partially clogged ODS/pilot

6. Th er mo co up le conn ection loose at control valve

7. Thermocouple damaged

8. Control valve damaged

REMEDY

1. Press in control knob fully

2. After ODS/pilot lights, keep con trol knob pressed in 30 seconds

3. Wait one minute for safety in terlock system to reset. Repeat ignition operation

4. Fully open equipment shutoff valve

5. A) Contact local natural or propane/LP gas company

B) Cl e a n OD S / pilot (see

Cleaning and Maintenance, page 20) or replace ODS/pilot assembly

6. Hand tighten until snug, then tighten 1/4 turn more

7. Replace pilot assembly

8. Replace control valve

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

Delayed ignition of burner

Burner backﬁring during com bustion

1. Inlet gas pressure is too low

2. Burner oriﬁce(s) clogged

3. Mislocated crossover tube

4. Burner oriﬁce(s) diameter is too small

5. Remot e se l e c tor in OFF position

6. Wire disconnected from gas control

1. Manifold pressure is too low

2. Burner oriﬁce(s) clogged

3. Mislocated crossover tube

1. Burner oriﬁce is clogged or

damaged

2. Damaged burner

3. Gas regulator defective

1. Contact local natural or pro pane/LP gas company

2. Clean burner(s) (see and Maintenance, page 20) or replace burner oriﬁce(s)

Contact qualiﬁed service person

4. Replace burner oriﬁce(s)

5. Pu t remote select or in ON position

6. See Wiring Diagram, page 21

1. Contact local natural or pro pane/LP gas company

2. Clean burner(s) (see Cleaning and Maintenance, page 20) or replace burner oriﬁce(s)

Contact qualiﬁed service person

1. Clean burner (see Cleaning and Maintenance, page 20) or replace burner oriﬁce

2. Replace damaged burner

3. Replace gas regulator

Cleaning

114745-01B 23

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OBSERVED PROBLEM

Orange ﬂame in burner during burner combustion

TROUBLESHOOTING

Continued

POSSIBLE CAUSE

1. Not enough air

2. Gas regulator defective

REMEDY

1. C h eck burn e r ( s ) f o r dirt and debris. If found, clean burner(s) (see Cleaning and Maintenance, page 20)

2. Replace gas regulator

Slight smoke or odor during initial operation

Heater produces a whistling noise when burners are lit

White powder residue forming within burner box or on adjacent walls or furniture

Moisture/condensation noticed on windows

Heater produces a clicking/tick ing noise just after burners are lit or shut off

1. Residues from manufacturing processes and logs curing

1. Turning control knob to HI position when burners are cold

2. Air in gas line

3. Air passageways on heater blocked

4. Di rty or part ially clog ged burner oriﬁce(s)

1. When heated, vapors from furniture polish, wax, carpet cleaners, etc. turn into white powder residue

1. Not enough combustion/ven tilation air

1. Metal expanding while heat ing or contracting while cool ing

1. Problem will stop after a few hours of operation

1. Turn control knob to LO po sition and let warm up for a minute

2. Operate burners until air is removed from line. Have gas line checked by local natural or propane/LP gas company

3. Obs e rve mi nimu m inst a llation clearances (see pages 9 through 12)

4. Clean burners (see Cleaning and Maintenance, page 20) or replace burner oriﬁce(s)

1. Turn heater off when using furniture polish, wax, carpet cleaners or similar products

1. Refer to Air for Combustion and Ventilation requirements (page 6)

1. This is common with most

heaters. If noise is excessive,

contact qualiﬁed service per son

www.desatech.com

114745-01B

TROUBLESHOOTING

Continued

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. Cleaning supplies, 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 odors will disappear over time.

OBSERVED PROBLEM

He a t e r p r o d uces unw a n t ed odors

Heater shuts off in use (ODS operates)

Gas odor even when control knob is in OFF position

Gas odor during combustion

POSSIBLE CAUSE

1. Heater burning vapors from pa int , hair sp ray, glue s , clean er s, chem icals, new carpet, etc. (See IMPOR TANT statement above)

2. Low fuel supply (propane/ LP only)

3. Gas leak. See Warning

statement at top of page

1. Not enough fresh air is avail able

2. Low line pressure

3. O D S /p i l o t i s pa r t i a ll y clogged

1. Gas leak. See Warning

statement at top of page

2. Control valve or gas control defective

1. Fore ign mat ter bet ween control valve and burner

2. Gas leak. See Warning

statement at top of page

REMEDY

1. Open win do w to vent il ate room. Stop using odor caus ing products while heater is

running

2. Reﬁll supply tank (propane/LP only)

3. Locate and correct all leaks (see Checking Gas Connections, page 14)

1. Open window and/or door for

ventilation

2. Contact local natural or pro pane/LP gas company

3. Clean ODS/pilot (see Cleaning and Maintenance, page 20)

1. Locate and correct all leaks (see Checking Gas Connec tions, page 14)

2. Replace control valve or gas control

1. Take apart gas tub in g and remove foreign matter

2. Locate and correct all leaks (see Checking Gas Connections, page 14)

Log set cycles to pilot, but room temperature drops to a lower than ideal level before log set comes back on

114745-01B 25

1. Hand-held remote control is too close to heater

www.desatech.com

1. Move hand-held remote con trol unit farther away from the heater

SPECIFICATIONS

VFRMV18NA VFRMV24NA VFRMV18PA VFRMV24PA

Btu (Variable) 24,000/36,000 28,000/39,000 26,000/34,000 31,000/39,000

Type Gas Natural Gas Only Natural Gas Only Propane/LP Only Propane/LP Only

Ignition Piezo Piezo Piezo Piezo

Manifold Pressure 3.5" - 1.6"W.C. 3.5" - 1.6"W.C. 10" - 6.3"W.C. 10" - 6.3"W.C.

Inlet Gas Pressure (in. of water) Maximum 10.5" W.C. 10.5" W.C. 14" W.C. 14" W.C. Minimum* 5.0" W.C. 5.0" W.C. 11" W.C. 11" W.C.

* For purpose of input adjustment

Manufactured by: DESA FMI. LLC, 1769 E. Lawrence St. Russellville, AL 35653 Note: This appliance has been designed-certiﬁed by ANS Z21.11.2a-2003 Unvented Room Heaters

and ANS Z21.60-2003.

Decorative Gas Appliances for Installation in Solid Fuel Burning Fireplaces by OMNI Test Laboratories.

REPLACEMENT PARTS

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

PARTS UNDER WARRANTY

Contact authorized dealers of this product. If they canʼt supply original replacement part(s), call DESA Technical Service Department at 1-866-672-6040.

When calling DESA, have ready

• your name

• your address

• model and serial numbers of your heater

• how heater was malfunctioning

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

• purchase date

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

PARTS NOT UNDER WARRANTY

Contact authorized dealers of this product. If they canʼt supply original replacement part(s), call DESA at 1-866-672-6040 for referral information.

When calling DESA, have ready

• model and serial numbers of your heater

• the replacement part number

SERVICE HINTS

When Gas Pressure Is Too Low

• pilot will not stay lit

• burners will have delayed ignition

• heater will not produce speciﬁed heat

• propane/LP gas supply may be low

You may feel your gas pressure is too low. If so, con tact your local propane/LP or natural gas supplier.

TECHNICAL SERVICE

You may have further questions about installation, operation or troubleshooting. If so, contact DESA Technical Service Department at 1-866-672-6040. When calling please have your model and serial numbers of your heater ready.

You can also visit DESA technical services web site at www.desatech.com.

ACCESSORIES

Purchase these heater accessories from your local dealer. If they can not supply these accessories, call DESA at 1-866-672-6040 for referral information. You can also write to the address listed on the back page of this manual.

EQUIPMENT SHUTOFF VALVE GA5010

For all models. Equipment shutoff valve with 1/8" NPT tap. Fits 1/2" NPT pipe.

FIREPLACE HOOD

Black - GA6050 Brass - GA6052 Antique Brass - GA6053

For all models. Helps deﬂect heat away from mantel or wall above ﬁreplace. Fits openings 28"

to 48" wide.

www.desatech.com

114745-01B

ACCESSORIES

Continued

RECEIVER AND HAND-HELD THERMOSTAT REMOTE CONTROL KIT - GHRCTB

For all models. Allows the gas log heater to be operated in a manually or thermostatically controlled mode. You can turn the gas log heater on and off without ever leaving the comfort of your easy chair.

RECEIVER AND HAND-HELD REMOTE CONTROL KIT - GHRCB

For all models. Allows the gas log heater to be turned on and off by using a hand-held remote control.

WALL-MOUNT THERMOSTAT SWITCH - GWMT1 (Not Shown)

For all models. The desired comfort setting can be selected on the wall thermostat and the log heater will automatically cycle from pilot to the heat setting selected.

WALL-MOUNT ON/OFF SWITCH GWMS2 (Not Shown)

For all models. Allows the gas log heater to be turned on and off with a wall switch.

VENT-FREE LOGMATE® FIREBOXES (Not Shown)

Available in 32", 36" and 42" models. Circulating ﬁreboxes feature louvers and an optional blower. Non-circulating, smooth face models are ideal for custom trim applications such as stone or marble.

FB32C (CIRCULATING), FB32NC (NON-CIRCULATING) SERIES (Not Shown)

For all models.

FB36CA, FB42C SERIES (CIRCULATING), FB36NCA, FB42NC SERIES (NON-CIRCULATING) (Not Shown)

For all models.

DAMPER CLAMP - GA6080 (Not Shown)

For all models. Permanently opens chimney ﬂue damper for vented operation.

LAVA ROCK - GA6060 (Not Shown)

For all models. Order when additional rock is desired. (1.8 lb. bag)

CLEANING KIT - GCK (Not Shown)

For all models. Your vent-free gas appliance requires regular cleaning and maintenance to prevent performance problems. This kit gives you the tools and instructions to make it easy to clean all critical areas of your appliance.

INFORMATION VIDEO - 108917-01

For all models. A care and maintenance video is available by calling 1-866-672-6040.

FLOOR MEDIA KIT - FM100

For all models. This kit is used to blend the edge of the burner to the ﬁreplace ﬂoor for a more natural appearance. It includes embers, lava rock and nine ﬁber log pieces.

CONTROL COVER MEDIA KIT CC100

For all models. This kit is used as an addition to or instead of the Floor Media Kit FM100. It includes 6 ﬁber log chunks to be placed on the ﬁreplace ﬂoor in front of the controls for a more natural appearance.

114745-01B 27

www.desatech.com

ILLUSTRATED PARTS BREAKDOWN

VFRMV18NA, VFRMV18PA VFRMV24NA (

Shown), VFRMV24PA

www.desatech.com

114745-01B

This list contains replaceable parts used in your heater. When ordering parts, follow the instructions

PARTS LIST

listed under Replacement Parts on page 26 of this manual.

KEY PART NUMBER

NO. VFRMV18NA VFRMV24NA VFRMV18PA VFRMV24PA DESCRIPTION QTY.

1 114854-01 114790-01 114854-01 114790-01 Grate Assembly 1 2 114860-01 114807-01 114860-01 114807-01 Log Set Assembly 1 3 114858-02 114797-02 114858-01 114797-01 Burner 1 4 114798-01 114798-01 114798-01 114798-01 Burner Support Bracket 1 5 11209 11209 11209 11209 10-24 Hex Nut 1 6 114799-04 114799-03 114799-02 114799-01 Oriﬁce 1 7 114802-01 114802-01 114802-01 114802-01 Oriﬁce Bracket 1 8 111807-01 111807-01 111807-02 111807-02 SIT Millivolt Valve 1 9 114795-01 114795-01 114795-01 114795-01 Valve Mounting Bracket 1 10 103779-01 112376-01 114859-01 114859-01 ODS Pilot Assy 1 11 114805-01 114805-01 114805-01 114805-01 Pilot Bracket 1 12 115027-01 115027-01 115027-01 115027-01 Pilot Shield 1 13 114793-01 114793-01 114793-01 114793-01 Piezo/Switch Bracket 1 14 097159-04 097159-04 097159-04 097159-04 Piezo 1 15 14579 14579 14579 14579 Rocker Switch 1 16 111817-01 111817-01 111817-01 111817-01 Main Gas Line 1 17 114804-01 114804-01 114804-01 114804-01 ODS Pilot Line 1 18 103784-01 103784-01 103784-01 103784-01 ON/PILOT/OFF Knob Extension 1 19 103784-02 103784-02 103784-02 103784-02 HI/LO Knob Extension 1 20 098271-13 098271-13 097271-13 098271-13 Piezo Wire 1 21 111828-01 111828-01 111828-01 111828-01 Compression Sleeve And Nut, 3/16" 1 22 111824-01 111824-01 111824-01 111824-01 Fitting 3/8" NPT Male To 3/8" Comp. 1 23 114801-01 114801-01 114801-01 114801-01 Fitting 1/8" NPT Male To 3/8" Comp. 1 24 111800-01 111800-01 111800-01 111800-01 10-24 x 3/8" Screw 16 25 103284-02 103284-02 103284-02 103284-02 Wire Harness 1 26 114800-01 114800-01 114800-01 114800-01 3/8" Flat Washer 2 27 111816-01 111816-01 111816-01 111816-01 #10-32 x 3/8" Screw 2

100563-01 100563-01 100563-01 100563-01 Warning Plate 1 103877-01 103877-01 103877-01 103877-01 Lighting Instruction Plate 1 100639-01 100639-01 100639-01 100639-01 Caution Decal 1 GA6060 GA6060 GA6060 GA6060 Lava Rock 1

PARTS AVAILABLE NOT SHOWN

114745-01B 29

www.desatech.com

NOTES

_____________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________

www.desatech.com

114745-01B

NOTES

114745-01B 31

www.desatech.com

WARRANTY INFORMATION

114745 01

KEEP THIS WARRANTY

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

LIMITED WARRANTY

VENT-FREE GAS LOG HEATERS

DESA warrants this product to be free from defects in materials and components for four (4) years from the date of ﬁrst purchase, provided that the product has been properly installed, operated and maintained in accordance with all applicable instructions. 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 heater to proper operating condition and an allowance for labor when provided by a DESA Authorized Service Center. Warranty part(s) MUST be obtained through authorized dealers of this product and/or DESA who will provide original factory replacement parts. Failure to use original factory replacement parts voids this war ranty. The heater MUST be installed by a 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 become damaged 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 THE PRODUCT; THIS EXPRESS WARRANTY EXCLUDES ANY AND ALL OTHER EXPRESSED WARRANTIES AND LIMITS THE DURATION OF ANY AND ALL IMPLIED WARRANTIES, INCLUDING WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE TO FOUR (4) YEARS ON ALL COMPONENTS FROM THE DATE OF FIRST PURCHASE; AND DESAʼS LIABILITY IS HEREBY LIMITED TO THE PURCHASE PRICE OF THE PRODUCT AND DESA SHALL NOT BE LIABLE FOR ANY OTHER DAMAGES WHATSOEVER INCLUDING INDIRECT, INCIDENTAL OR CONSE QUENTIAL DAMAGES.

Some states do not allow a limitation on how long an implied warranty lasts or an exclusion or limitation of incidental or consequential damages, 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:

2701 Industrial Drive P.O. Box 90004 Bowling Green, KY 42102-9004 www.desatech.com

NOT A UPC

114745-01 Rev. B 10/04

Desa VFRMV18PA, VFRMV18NA, VFRMV24PA User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

SAFETY INFORMATION

LOCAL CODES

UNPACKING

PRODUCT FEATURES

INSTALLATION

OPERATING HEATER

INSPECTING BURNERS

WIRING DIAGRAM

TROUBLESHOOTING

SPECIFICATIONS

REPLACEMENT PARTS

SERVICE HINTS

TECHNICAL SERVICE

ACCESSORIES

ILLUSTRATED PARTS BREAKDOWN

WARRANTY INFORMATION