Desa VRL24PR, VRL24NR, VRL24NT, VRL30NT, VRL30NR User Manual

UNVENTED (VENT-FREE) GAS LOG HEATER OWNER’S OPERATION AND INSTALLATION MANUAL

24" AND 30" REMOTE-READY MODELS:

VRL24NR, VRL24PR, VRL30NR, VRL30PR, CSG3924NR, CSG3924PR, CTB3924NR, CTB3924PR, CSG3930NR, CSG3930PR

24" AND 30" THERMOSTAT MODELS:

VRL24NT, VRL24PT, VRL30NT, VRL30PT, CSG3924NT, CSG3924PT,

CTB3924NT, CTB3924PT

Remote-Ready 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.

•Donottouchanyelectricalswitch;donotuseany phone in your building.

•Immediatelycallyourgassupplierfromaneighbor’s phone. Follow the gas supplier’s instructions.

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

—Installationandservicemustbeperformedbyaqualified 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 propertydamage.Refertothismanualforcorrectinstallation 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 de- sign-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 beprovided.RefertoAirforCombustionandVentilation 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	Cleaning and Maintenance................................	26
Product Identification...........................................	5	Troubleshooting.................................................	28
Optional Remote Control Accessories.................	5	Optional Positioning of Thermostat Sensing Bulb..	32
Local Codes ........................................................	5	Wiring Diagram..................................................	33
Unpacking ...........................................................	6	Specifications ....................................................	34
Product Features.................................................	6	Illustrated Parts Breakdown ..............................	35
Air For Combustion and Ventilation.....................	6	Replacement Parts............................................	40
Installation ...........................................................	8	Technical Service ..............................................	40
Operating Heater...............................................	20	Service Hints .....................................................	40
Inspecting Burners ............................................	25	Accessories.......................................................	41

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SAFETY INFORMATION

WARNING:Thisproductcontainsand/orgenerateschemicals known to the State of California to cause cancer or birth defects or other reproductive harm.

IMPORTANT: Read this owner’s manualcarefullyandcompletely before trying to assemble, operate or service this fireplace.

Improper use of this fireplace can cause serious injury or death from burns, fire, explosion,electricalshockandcarbon monoxide poisoning.

DANGER:Carbonmonoxide poisoning may lead to death!

Carbon Monoxide Poisoning: Early signs of carbon monoxide poisoning resemble the flu, with headaches, dizziness or nausea. If you have these signs, the fireplace may not be working properly. Get fresh air at once! Have fireplace serviced. Somepeoplearemoreaffectedbycarbonmonoxide thanothers.Theseincludepregnantwomen,people withheartorlungdiseaseoranemia,thoseunderthe influence of alcohol and those at high altitudes.

NaturalandPropane/LPGas:Naturalandpropane/ LP gases are odorless. An odor-making agent is addedtothesegases.Theodorhelpsyoudetectagas leak. However, the odor added to the gas can fade. Gas may be present even though no odor exists.

Makecertainyoureadandunderstandallwarnings. Keep this manual for reference. It is your guide to safe and proper operation of this fireplace.

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

WARNING: Do not use a blower insert, heat exchanger insertorotheraccessorynotapproved for use with this heater.

WARNING: This appliance is forinstallationonlyinasolid-fuel burning fireplace or approved ventless firebox enclosure.

WARNING:Donotallowfans toblowdirectlyintothefireplace. Avoidanydraftsthatalterburner flame patterns. Ceiling fans can create drafts that alter burner

flame patterns. Altered burner patterns can cause sooting.

Due to high temperatures, the applianceshouldbelocatedout oftrafficandawayfromfurniture and draperies.

Do not place clothing or other

flammable material on or near the appliance. Never place any objects on the heater.

Heaterbaseassemblybecomes 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.Allowsurfacetocool before touching.

Carefully supervise young children when they are in the room withheater.Whenusingthehandheld 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.

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SAFETY INFORMATION

Continued

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

1.This appliance is only for use with the type of gasindicatedontheratingplate.Thisappliance is not convertible for use with other gases.

2.Do not place propane/LP supply tank(s) inside any 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 orbathroomunlessinstalledas aventedappliance.SeeInstalling Damper ClampAccessory for Vented Operation, page13(Remote-Ready Models only).

5.Before installing in a solid fuel burning fireplace, the chimney flue and firebox must be cleaned of soot, creosote, ashes and loose paintbyaqualifiedchimneycleaner.Creosote will ignite if highly heated. A dirty chimney flue may create and distribute soot within the house. Inspect chimney flue and firebox for damage. If damaged, repair flue before operating heater.

6.Do not burn solid-fuel in a masonry or UL127 factory-built fireplace in which a vent-free room heater is installed.

7.If fireplace has glass doors, never operate this heater with glass doors closed. If you operate heaterwithdoorsclosed,heatbuildupinsidefireplacewillcauseglasstoburst.Makesurethereare no obstructions across openings of fireplace.

8.To prevent the creation of soot, follow the instructions in Cleaning and Maintenance, page 26.

9.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 burner box or on adjacent walls or furniture.

10.This heater needs fresh, outside air ventilation torunproperly.ThisheaterhasanOxygenDepletion Sensing (ODS) safety shutoff system. The ODS shuts down the heater if not enough fresh air is available. See Air for Combustion andVentilation,page6.Ifheaterkeepsshutting off, see Troubleshooting, page 28.

11.Do not run heater

•where flammable liquids or vapors are used or stored

•under dusty conditions

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

13.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 andtoreplaceanypartofthecontrolsystemand any gas control which has been under water.

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

15.Turn heater off and let cool before servicing, installing or repairing. Make sure the selector switch is in the OFF position (Remote-Ready ModelsOnly).Onlyaqualifiedserviceperson should install, service or repair heater.

16.Make sure the selector switch is in the OFF positionwhenyouareawayfromhomeforlong periods of time (Remote-Ready Models Only).

17.Remote-ready heaters do not need to be connected to any external electrical source.

18.Operating heater above elevations of 4,500 feet could cause pilot outage.

19.To prevent performance problems with propane/LP models, do not use propane/LP fuel tank of less than 100 lb. capacity.

20.Provide adequate clearances around air openings.

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PRODUCT

IDENTIFICATION

Log Set (Varies

According to Model)

Grate

	Piezo	Burner
	Ignitor
		Control
		Knob

	Front and Rear		Base
	Burner Control Knob		Assembly
	Thermostat Models
Selector Switch
(Optional)		Pilot
Grate		Assembly	Rear
			Burner

Piezo

Ignitor

ON/OFF/

PILOT

Knob

Front

Burner

Middle

Burner

Base

Assembly

	Remote Control	Front and Rear
		Burner Control
	(Optional)
		Knob
	Remote-Ready Models
	Figure 1 - Product Identification

OPTIONAL REMOTE CONTROL ACCESSORIES

There are four optional remote controls that can be purchased separately for Remote-Ready Models Only:

• wall switch

• hand-held ON/OFF remote

• wall thermostat • hand-held thermostat remote See Accessories, page 41.

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

LOCAL CODES

Install and use 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/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

Note: Where listed vented decorative logs are required, thermostat models are not permitted.

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

Sellers 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.

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UNPACKING

CAUTION:Donotremovethe data plates from the grate assembly. The data plates contain important warranty and safety information.

1.Remove logs and heater base assembly from carton. Note: Do not pick up heater base assembly by burners.This could damage heater. Always handle base assembly by the sides of assembly.

2.Remove all protective packaging applied to logs and heater for shipment.

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

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.Heatisgeneratedbybothrealisticflames andglowingcoals.Thisheaterisdesignedforventfree operation with flue damper closed. It has been testedandapprovedtoANSIZ21.11.2standardfor 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 (ANSIZ21.60)productbyopeningthefluedamper (Remote-Ready Models Only).

SAFETY DEVICE

This heater has a pilot with an Oxygen Depletion Sensing (ODS) safety shutoff 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.

AIR FOR COMBUSTION AND VENTILATION

WARNING:Thisheatershall not be installed in a confined space or unusually tight constructionunlessprovisionsare providedforadequatecombustionandventilationair.Readthe followinginstructionstoinsure 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 efficient, your home needs to breathe. Fresh air must enter your home.All fuel-burning appliances need fresh air for proper combustion and ventilation.

Exhaust fans, 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 following 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.

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AIR FOR COMBUSTION

AND VENTILATION

Continued

Unusually tight construction is defined as construction where:

a.walls and ceilings exposed to the outside atmosphere have a continuous water vapor retarder with a rating of one perm (6x10-11 kg per pa-sec-m2) or less with openings gasketed or sealed and

b.weather stripping has been added on openable windows and doors and

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

If your home meets all of the three criteria above,youmustprovideadditionalfreshair. See Ventilation Air From Outdoors, page 8.

If your home does not meet all of the three criteria above, proceed to Determining Fresh-Air Flow For Heater Location.

Confined Space and Unconfined Space

The National Fuel Gas Code ANSI Z223.1/NFPA 54 defines a confined space as a space whose volume is less than 50 cubic feet per 1,000 Btu per hour (4.8 m3 per kw) of the aggregate input rating of all appliances installed in that space and an unconfined space as a space whose volume is not less than 50 cubic feet per 1,000 Btu per hour (4.8 m3 per kw) of the aggregate input rating of all appliances installed in that space. Rooms communicating directly with the space in which the appliances are installed*, through openings not furnished with doors, are considered a part of the unconfined space.

* Adjoining rooms are communicating only if therearedoorlesspassagewaysorventilationgrills between them.

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

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

Length x Width x Height =__________cu. ft. (volume of space)

Example: Space size 20 ft. (length) x 16 ft. (width) x 8 ft. (ceiling height) = 2,560 cu. ft. (volume of space)

If additional ventilation to adjoining room is supplied with grills or openings, add the volume of these rooms to the total volume of the space.

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

__________ (volume of space) x 20 = (Maximum Btu/Hr the space can support)

Example: 2,560 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 fireplace	__________ Btu/Hr
Gas water heater*	__________ Btu/Hr
Gas furnace	__________ Btu/Hr
Vented gas heater	__________ Btu/Hr
Gas fireplace logs	__________ Btu/Hr
Other gas appliances*	+__________ Btu/Hr
Total	=__________ Btu/Hr

* Do not include direct-vent gas appliances. Di- rect-ventdrawscombustionairfromtheoutdoors and vents to the outdoors.

Example:

Gas water heater		40,000
		__________ Btu/Hr
Vent-free fireplace	+	31,500	Btu/Hr
Total	=	71,500	Btu/Hr

4.Compare the maximum Btu/Hr the space can support with the actual amount of Btu/Hr used.

_________Btu/Hr(maximumthespacecansupport)

_________ Btu/Hr (actual amount of Btu/Hr used)

Example: 51,200 Btu/Hr (maximum the space can support)

79,000 Btu/Hr (actual amount of Btu/Hr used)

The space in the 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.Reworkworksheet,addingthespaceofanadjoiningroom.Iftheextraspaceprovidesanunconfined space, remove door to adjoining room or add ventilation grills between rooms. See Ventilation Air From Inside Building, page 8.

B.Vent room directly to the outdoors. See Ventilation Air From Outdoors, page 8.

C.Install a lower Btu/Hr fireplace, if lower Btu/Hr size makes room unconfined.

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AIR FOR COMBUSTION

AND VENTILATION

Continued

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

WARNING: If the area in which the heater may be operatedissmallerthanthatdefined as an unconfined space or if the building is of unusually tight construction, provide adequate combustion and ventilation air byoneofthemethodsdescribed in the National Fuel Gas Code, ANSIZ223.1/NFPA54Section5.3 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).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 required size of ventilation grills or ducts.

			12"
	Ventilation		Ventilation Grills
	Grills
	Into Adjoining	Or	Into Adjoining Room,
	Room,		Option 2
		Remove
	Option 1
		Door into
		Adjoining
		Room,
		Option
		3
			12"

Figure 2 - Ventilation Air from Inside Building

Ventilation Air From Outdoors

Provideextrafreshairbyusingventilationgrillsor 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 thermostatcontrolledpowervent.Heatedairenteringtheattic will activate the power vent.

	Outlet	Ventilated
		Attic
	Air
Outlet
Air		To Attic
		To
		Crawl
Inlet		Space
Air
	Inlet Air	Ventilated
		Crawl Space

Figure 3 - Ventilation Air from Outdoors

INSTALLATION

NOTICE:Thisheaterisintended for use as supplemental heat. Use this heater along with your primary heating system. Do not install this heater as your primary heat source. If you have a centralheatingsystem,youmay run system’s circulating blower whileusingheater.Thiswillhelp circulatetheheatthroughoutthe house. In the event of a power outage, you can use this heater as your primary heat source.

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INSTALLATION

Continued

WARNING: Installation and repair should be done by a quali-

fiedserviceperson.Theappliance shouldbeinspectedbeforeuseand at least annually by a professional service person. More frequent cleaning may be required due to excessivelintfromcarpeting,bedding material, etc. It is imperative thatcontrolcompartments,burners andcirculatingairpassagewaysof the appliance be kept clean.

NOTICE:Stateorlocalcodesmay onlyallowoperationofthisappliance in a vented configuration.

Check your state or local codes

(Remote-Ready Models Only).

WARNING: Make sure the selector switch is in the OFF positionbeforeinstallingheater (Remote-Ready Models Only).

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 qualifiedchimneycleaner.Creosotewilligniteifhighlyheated.A dirtychimneyfluemaycreateand distributesootwithinthehouse.

Inspectchimneyflueandfirebox for damage. If damaged, repair flue before operating heater.

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 13 (Re- mote-Ready Models Only)

•in a recreational vehicle

•where curtains, furniture, clothing or other flammable objectsarelessthan42inches from the front, top or sides of the firebox opening

•in high traffic areas

•in windy or drafty areas

CAUTION: This heater creates warm air currents. These currents move heat to wall surfaces 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,oilorkerosenelamps,etc.)in the air exist, may discolor walls or cause odors.

IMPORTANT: Vent-free heaters add moisture to theair.Althoughthisisbeneficial,installingheater inroomswithoutenoughventilationairmaycause mildew to form from too much moisture. See Air for Combustion and Ventilation, page 6.

CHECK GAS TYPE

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

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

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INSTALLATION

Continued

INSTALLATION AND CLEARANCES

(Vent-Free Operation Only)

WARNING: Maintain the minimumclearances.Ifyoucan, provide greater clearances from floor, ceiling and adjoining wall.

LOG SIZING REQUIREMENTS

	Minimum Firebox Size
Log			Front	Rear
Size	Height	Depth	Width	Width*
24"	17"	14"	28"	20 1/4"
30"	17"	14"	34"	22 3/8"

*Measured at 14" Depth

Carefully follow the instructions below. This will ensure safe installation into a masonry, UL127listed manufactured fireplace or certified 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.

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

Note: When installing your gas logs into a manufactured firebox, follow firebox manufacturerʼs instructions for minimum clearances to combustible materials.

B.Clearances from the top of the fireplace opening to the ceiling should not be less than 42 inches.

Example

*

*Minimum 16 inches from Side Wall

Figure 4 - Minimum Clearance for Combustible to Wall

NOTICE:Manualcontrolheaters maybeusedasaventedproduct.

Ifso,youmustalwaysrunheater with chimney flue damper open.

If running heater with damper open, noncombustible material above fireplace opening is not needed. Go to Installing Damper Clamp Accessory for Vented Operation, page 13.

Minimum Noncombustible Material Clearances

If Not Using Mantel

Note: If using a mantel, proceed to If Using Mantel below. If not using a mantel, follow the information below.

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" up. If noncombustiblematerialislessthan12",youmust install the fireplace hood accessory. See Figure 5, page 11, for minimum clearances.

IMPORTANT:Ifyoucannotmeettheseminimum clearances, you must operate heater with chimney flue damper open. Go to Installing Damper Clamp Accessory for Vented Operation, page 13.

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 noncombustiblematerialbehindit.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"modelonly).Evenifnoncombustiblematerial ismorethan12",youmayneedthehoodaccessory to deflect heat away from your mantel shelf. See Figures 5 and 6, page 11 and Figure 7 page 12, for minimum clearances.

IMPORTANT:Ifyoucannotmeettheseminimum clearances, you must operate heater with chimney flue damper open. Go to Installing Damper Clamp Accessory for Vented Operation, page 13.

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INSTALLATION

Continued

Noncombustible	Requirements for
Material Distance (A)	Safe Installation
12" or more	Noncombustible material okay.
Between 8"	Install fireplace hood and 12"
	accessory (GA6050, GA6052 or
	GA6053, see Accessories, page 41).
Less than 8"	Noncombustible material must be
	extended to at least 8". See
	Between 8" and 12", above. If you
	cannot extend material, you must
	operate heater with flue damper open.

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

MANTEL CLEARANCES

In addition to meeting noncombustible material clearances,youmustalsomeetrequiredclearances 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).

	10"	Mantel Shelf
		Underside of
	8"
		Mantel Shelf
	6"
	2 1/2"

All minimum distances are in inches

Minimum Non-		(A)
Combustible								Log Set
Material
	12"		18"	20"	22"	24"		All Models

Top of Fireplace

Opening

Minimum Non-	Distances to
Combustible	Underside of
Material Height	Mantel

Figure 6 - Minimum Mantel Clearances Without Using Hood

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INSTALLATION

Continued

Determining Minimum Mantel Clearance when Using a Hood

If minimum clearances in Figure 6 (page 11) are notmet,youmusthaveahood.Whenusingahood there are still certain minimum mantel clearances required. Follow minimum clearances shown in Figure 7 when using a hood.

NOTICE: Surface temperatures ofadjacentwallsandmantelsbecomehotduringoperation.Walls and mantels above the firebox may become hot to the touch. If installed properly, these temperatures meet the requirement ofthenationalproductstandard.

Follow all minimum clearances shown in this manual.

NOTICE:Ifyourinstallationdoes not meet the minimum clearances shown, you must do one of the following:

•operate the logs only with the

flue damper open

•raise the mantel to an acceptable 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).

	12"	Mantel Shelf			Underside
	10"				of Mantel
	8"				Shelf
	6"
	2 1/2"				All minimum
Minimum					distances are
					in inches
Noncombustible
Material	8"	12"	15"	18"	20"
	Min.
					Top of
					Fireplace
	Hood	Distances to			Opening
	(GA6050,	Underside of
	GA6052 or	Mantel
	GA6053)

Figure 7 - Minimum Mantel Clearances When Using Hood

	Combustible
14"	Material	Hearth	Combustible
Min.
			Material
		5"
		Min.
Noncombustible Material
Figure 8 - Minimum Fireplace Clearances		Figure 9 - Minimum Fireplace Clearances
If Installed at Floor Level		Above Combustible Flooring

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INSTALLATION

Continued

INSTALLING DAMPER CLAMP

ACCESSORY FOR VENTED OPERATION (Remote-Ready Models Only)

Note: When used as a vented heater, 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 manually-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 41). This will insure vented operation (see Figure 10). The damper clamp will keep damper open. Installation instructions are included with clamp accessory.

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

Damper
Damper
Clamp
Damper	Damper

Masonry Fireplace	Manufactured
	Fireplace
Figure 10 - Attaching Damper Clamp
INSTALLING HEATER BASE
ASSEMBLY
CAUTION:Donotremovethe
dataplatesattachedtotheheater
base assembly. The data plates
contain important warranty and
safety information.
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 in-
sureadequateairflowandguard
against sooting and controls be-
ingdamaged.Raisefireplacefloor
with noncombustible material.
Make sure material is secure.

Chimney	Minimum Permanent
Height (ft.)	Flue Opening (sq. ins.)
6' to 15'	39 sq. inches
15' to 30'	29 sq. inches

CAUTION: Do not pick up heater base assembly by the burner. This could damage heater. Only handle base assembly by grates.

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INSTALLATION

Continued

IMPORTANT: Make sure the heater burners are level. If heater is not level, heater will not work properly. For thermostat models, avoid damage to thermostat bulb. Avoid nicks or sharp bends in thermostat bulb wire. Keep thermostat bulb in mounting bracket until ready to mount base to floor. See Optional Positioning Of Thermostat Sensing Bulb, page 32.

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, not provided)

•electric drill with 3/16" drill bit

•flathead screwdriver

1.Connect fitting to base as shown in Figure 11. Connect approved flexible gas hose to fitting in base (see Figure 11).

IMPORTANT: Hold gas fitting with wrench when connecting flexible gas hose.

2.Locate two masonry screws in hardware package.

3.Place heater base in fireplace.

4.Place logs in their proper position on heater base (see Installing Logs, page 18).

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

6.Carefully remove logs without moving heater base.

7.Markscrewlocationsthroughoneholeoneach side of the mounting bracket (see Figure 12). If installing in a brick-bottom fireplace, mark screw locations in mortar joint of bricks.

8.Removeheaterbasefromfireplace.Ifinstalling optional control accessories, do so at this time. Follow all directions provided with accessory.

9.Drill holes at marked locations using 3/16" drill bit.

10.Attach base assembly to fireplace floor using two masonry screws (in hardware package).

Flexible Gas Hose

(if allowed by local Fitting codes)

Figure 11 - Attaching Flexible Gas Hose

to Heater

Mounting

Flange

Masonry Screw

Figure 12 - Attaching Base Assembly to Fireplace Floor (30" Model Shown)

CONNECTING TO GAS SUPPLY

WARNING: This appliance requires a 1/2" NPT (National

PipeThread)inletconnectionto the pressure regulator.

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

CAUTION: Never connect propane/LPheaterdirectlytothe propane/LPsupply.Propane/LP heatersrequireanexternalregulator (not supplied). Install the external regulator between the heater and propane/LP supply.

WARNING: For natural gas units, never connect heater to private (non-utility) gas wells.

This gas is commonly known as wellhead gas.

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