Desa GAS LOG HEATER User Manual

UNVENTED (VENT-FREE) GAS LOG HEATER

OWNER’S OPERATION AND INSTALLATION MANUAL

For more information, visit www.desatech.com

("A" Models) 18", 24", and 30"

Remote-Ready

(“C” Models) 18", 24", and 30"

Variable Manually-Controlled

Remote-Ready and Variable Manually-Controlled 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 qualified installer, service agency, or the gas supplier.

PILOT OFF HI

(“B” Models) 18", 24", and 30"

Thermostatically-Controlled

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 factorybuilt 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 4 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

Save this manual for future reference.

TABLE OF CONTENTS SAFETY INFORMATION

TABLE OF CONTENTS

SAFETY INFORMATION ............................................................ 2

PRODUCT IDENTIFICATION ..................................................... 3

OPTIONAL REMOTE CONTROL ACCESSORIES .................... 4

LOCAL CODES........................................................................... 4

UNPACKING............................................................................... 4

PRODUCT FEATURES .............................................................. 4

AIR FOR COMBUSTION AND VENTILATION ........................... 4

INSTALLATION ........................................................................... 7

OPERATING HEATER.............................................................. 16

INSPECTING BURNERS.......................................................... 22

CLEANING AND MAINTENANCE ............................................ 23

SAFETY INFORMATION

TROUBLESHOOTING .............................................................. 24

OPTIONAL POSITIONING OF THERMOST AT SENSING BULB ...

SPECIFICATIONS .................................................................... 28

WIRING DIAGRAM ................................................................... 29

SERVICE HINTS....................................................................... 29

TECHNICAL SERVICE ............................................................. 29

REPLACEMENT PARTS .......................................................... 29

ILLUSTRATED PARTS BREAKDOWN AND PARTS LIST ....... 30

ACCESSORIES ........................................................................ 36

OWNER'S REGISTRATION FORM .......................................... 37

WARRANTY INFORMATION...................................... Back Cover

WARNINGS

WARNING: This product contains and/or generates chemicals known to the State of California to cause cancer or birth defects, or other reproductive harm.

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

DANGER: Carbon monoxide 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 heater may not be working properly. Get fresh air at once! Have heater 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 and Propane/LP Gas: Natural and propane/LP gases 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 heater.

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

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.

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 base 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 heater. When using the hand-held remote accessory (Remote-Ready Models Only), 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.

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

For more information, visit www.desatech.com

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

104415-01L

SAFETY INFORMATION

Continued

1. 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.

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 neighbor’s phone.

Follow the gas supplier’s 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 appliance. See Installing Damper Clamp Accessory for Vented Operation, page 10 (RemoteReady and Variable Manually-Controlled 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 paint by a qualified chimney cleaner. Creosote 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 and firebox 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 heater with doors closed, heat buildup inside fireplace will cause glass to burst. Make sure there are no obstructions across openings of fireplace.

8. To prevent the creation of soot, follow the instructions in Clean- ing and Maintenance, page 23.

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 and furniture.

10. This heater needs fresh, outside air ventilation to run properly . This heater has an Oxygen Depletion Sensing (ODS) safety shutoff system. The ODS shuts down the heater if enough fresh air is not available. See Air for Combustion and Ventilation, pages 4 through 6. If heater keeps shutting off, see Trouble- shooting, pages 24 through 26.

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 and to replace any part of the control system and 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 (dime-sized or larger).

SAFETY INFORMATION

PRODUCT IDENTIFICATION

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

16. M ake sure the selector switch is in the OFF position when you are away from home for long periods of time (Remote-Ready Models Only).

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

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

19. T o prevent performance problems, do not use propane/LP fuel tank of less than 100 lb. capacity (propane/LP units only).

20. Provide adequate clearances around air openings.

PRODUCT IDENTIFICATION

Crossover Log

Rear Log

Front Log

Piezo Ignitor

Front Burner

Control Knob

Front Burner

Front Log

Piezo Ignitor

Remote Control (Optional)

Control Knob

Flame Adjustment Knob

Selector Switch (Optional)

Figure 1 - Product Identification

Crossover Log

Rear Burner

Middle Log

Base Assembly

Rear Log

Rear Burner

Middle Log

Base Assembly

104415-01L

For more information, visit www.desatech.com

OPTIONAL REMOTE CONTROL ACCESSORIES LOCAL CODES

UNPACKING PRODUCT FEATURES AIR FOR COMBUSTION AND VENTILATION

Providing Adequate Ventilation

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 36.

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 Z223.1/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

operation is not permitted.

UNPACKING

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

1. Remove logs and heater base assembly from carton. not pick up heater base assembly by burners. This could damage heater. Always handle base assembly by grate.

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.

Note:

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 ventfree 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 (Non-Thermostat 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 ventfree 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: This heater shall not be installed in a 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.

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

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

Exhaust fans, 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 4 through 6 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.

For more information, visit www.desatech.com

104415-01L

AIR FOR COMBUSTION AND VENTILATION

Continued

AIR FOR COMBUSTION AND VENTILATION

Providing Adequate Ventilation (Cont.)

Determining Fresh-Air Flow for Heater Location

Unusually tight construction is defined as construction where:

a. walls and ceilings e xposed to the outside atmosphere

have a continuous water vapor retar der with a rating of one perm (6 x 10 openings gasketed or sealed

-11

kg per pa-sec-m2) or less with

and

b. weather stripping has been added on openable win-

dows 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 f or plumbing, electrical, and gas lines, and at other openings.

If your home meets all of the three criteria above, you must pro vide additional fresh air . See

Air From Outdoors

, page 6

Ventilation

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

tion,

Determining Fresh-Air Flow For Heater Loca-

below.

Confined 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 there are doorless passageways or ventilation grills between them.

DETERMINING FRESH-AIR FLOW FOR HEATER LOCATION

Determining if You Have a Confined or Unconfined Space

Use this work sheet to determine if you have a confined or unconfined space. Space: Includes the room in which you will install heater plus any adjoining

rooms with doorless passageways or ventilation grills 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:

height) = 2560 cu. ft. (volume of space) If additional ventilation to adjoining room is supplied with grills or open-

ings, add the volume of these rooms to the total volume of the space.

Space size 20 ft. (length) x 16 ft. (width) x 8 ft. (ceiling

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:

Btu/Hr the space can support)

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

* Do not include direct-vent gas appliances. Direct-vent draws combustion air from the outdoors and vents to the outdoors.

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

__________________ Btu/Hr (maximum the space can support) __________________ Btu/Hr (actual amount of Btu/Hr used)

Example:

The space in the above example is a confined space because the actual Btu/ Hr used is more than the maximum Btu/Hr the space can support. You must provide additional fresh air. Your options are as follows:

A. Rework worksheet, adding the space of an adjoining room. If the ex-

tra space provides an unconfined space, remove door to adjoining room or add ventilation grills between rooms. See V entilation Air Fr om Inside Building, page 6.

B. Vent room directly to the outdoors. See Ventilation Air From Out-

doors, page 6.

C. Install a lower Btu/Hr heater, if lower Btu/Hr size makes room unconfined. If the actual Btu/Hr used is less than the maximum Btu/Hr the space can support,

the space is an unconfined space. You will need no additional fresh air ventilation.

2560 cu. ft. (volume of space) x 20 = 51,200 (maximum

Vent-free heater _____________ 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

Example:

Gas water heater _____________ Btu/Hr Vent-free heater + _____________ Btu/Hr Total = _____________ Btu/Hr

51,200 Btu/Hr (maximum the space can support) 73,000 Btu/Hr (actual amount of Btu/Hr used)

40,000 33,000 73,000

WARNING: If the area in which the heater 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

104415-01L

For more information, visit www.desatech.com

AIR FOR COMBUSTION AND VENTILATION

Ventilation Air

AIR FOR COMBUSTION AND VENTILATION

Continued

VENTILATION AIR

Ventilation Air From Inside Building

This fresh air would come from an adjoining unconfined space. When ventilating to an adjoining unconfined space, you must provide two permanent openings: one within 12" of the ceiling and one within 12" of the floor on the wall connecting the two spaces (see options 1 and 2, Figure 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.

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:

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

Do not provide openings for inlet or outlet air into

12"

Ventilation

Grills

Into Adjoining

Room,

Option 1

Figure 2 - Ventilation Air from Inside Building

Outlet Air

Remove

Door into

Adjoining

Room, Option

12"

Outlet Air

Ventilation Grills

Into Adjoining Room,

Option 2

Ventilated Attic

To Attic

Inlet Air

Figure 3 - Ventilation Air from Outdoors

For more information, visit www.desatech.com

Crawl Space

Crawl

Space

Ventilated

104415-01L

INSTALLATION

Check Gas Type

Installation and Clearances for Vent-Free Operation

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 heat 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 the event of a power outage, you can use this heater as your primary heat source.

WARNING: A qualified service person must in-

stall 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 (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 qualified chimney cleaner. Creosote 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 and firebox before operating heater.

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

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, oil or kerosene lamps, etc.) in the air exist, may discolor walls or cause odors.

IMPORTANT:

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, pages 4 through 6.

Vent-free heaters add moisture to the air. Although

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 fireplace. Call dealer where you bought fireplace for proper type fireplace.

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", 30"

Side Wall 16"

Ceiling 42"

Floor 5"

WARNING: Never install the heater

• in a bedroom or bathroom unless installed as a vented appliance, see page 10 (Remote-Ready and Variable Manually-Controlled Models Only)

• in a recreational vehicle

• where curtains, furniture, clothing, or other flam-

mable objects are less than 42 inches from the front, top, or sides of the heater

• in high traffic areas

• in windy or drafty areas

For more information, visit www.desatech.com

104415-01L

LOG SIZING REQUIREMENTS

Minimum Firebox Size

Log Front Rear* Size Height Depth Width Width

18" 17" 14" 20" 14" 24" 17" 14" 26" 18" 30" 17" 14" 32" 22"

*Measured at 14" depth

INSTALLATION

Installation and Clearances for Vent-Free Operation (Cont.)

INSTALLATION

Continued

Carefully follow the instructions below. This will ensure safe installation into a 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 combus-

tible material and wall should follow diagram in Figure 4.

Example:

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:

follow firebox manufacturer’s 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.

*Minimum 16 inches from Side Wall

Figure 4 - Minimum Clearance for Combustible to Wall

NOTICE: Manual control heaters may be used as a vented product. If so, you must always run heater with chimney flue damper open. If running heater with damper open, noncombustible material above fireplace opening is not needed. Go to

Clamp Accessory for Vented Operation,

The face of a mantel, bookshelf, etc. is made of

When installing your gas logs into a manufactured firebox,

Example

Installing Damper

page 10.

noncombustible material behind it. Noncombustible 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" and 30" Models Only). See Figure 5 for minimum clearances.

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" and 30" 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 9, for minimum clearances.

IMPORTANT:

If you cannot meet these minimum clearances, you must operate heater with chimney flue damper open. Go to Install- ing Damper Clamp Accessory for Vented Operation, page 10.

Noncombustible Requirements for Material Distance (A) Safe Installation

12" or more Noncombustible material OK. Between 8" and 12" 24" or 30" Models: Install fireplace

hood accessory (GA6050, GA6052, or GA6053 see

18" Model: Noncombustible material OK.

Less than 8" Noncombustible material must be

extended to at least 8". See

8" and 12"

extend material, you must operate heater with flue damper open.

Heat Resistant Material

Accessories

, above. If you cannot

(A)

, page 36).

Between

Minimum Noncombustible Material Clearances

If Not Using Mantel

Note:

If using a mantel proceed to If Using Mantel. If not using a

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

For more information, visit www.desatech.com

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

104415-01L

INSTALLATION

Hearth

5" Min.

Combustible Material

Continued

INSTALLATION

Mantel Clearances

Floor Clearances

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

• 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).

Mantel Shelf

18" 14"

20" 17"

Distances to Underside of Mantel

22" 19"

Underside of Mantel Shelf

24" 20"

Top of Fireplace Opening

All minimum distances are in inches

Log Set

24"/30" Models 18" Model

Minimum NonCombustible Material

10" 8" 6"

(A)

12" 8"

Minimum NonCombustible Material Height

Figure 6 - Minimum Mantel Clearances Without Using Hood

Mantel Shelf

Underside of Mantel Shelf

12" 15" 18"

Min.

Distances to Underside of Mantel

All minimum distances are in inches

Log Sets

18", 24",

20"

& 30" Models

Top of Fireplace Opening

Minimum NonCombustible Material

12" 10" 8" 6"

Hood

Hood (GA6050, GA6052)

(GA6050, GA6052, or GA6053)

104415-01L

Figure 7 - Minimum Mantel Clearances When Using Hood

14" Min.

Figure 8 - Minimum Fireplace Clearances If Installed at Floor Level

For more information, visit www.desatech.com

Combustible Material

Noncombustible

Non-Combustible

Material

Figure 9 - Minimum Fireplace Clearances Above Combustible Flooring

INSTALLATION

Installing Damper Clamp Accessory for Vented Operation Installing Heater Base Assembly

INSTALLATION

Continued

INSTALLING DAMPER CLAMP ACCESSORY FOR VENTED OPERATION

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 re-

quirements 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 36). 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

Chimney Minimum Permanent

Height (ft.) Flue Opening (sq. ins.)

6' to 15' 39 sq. inches

15' to 30' 29 sq. inches

Damper Clamp

Damper

Masonry Fireplace

Figure 10 - Attaching Damper Clamp

Manufactured Fireplace

Damper

INSTALLING HEATER BASE ASSEMBLY

WARNING: You must secure this heater to fireplace floor. If not, heater will move when you adjust controls. Moving heater may cause a gas leak.

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 and controls being damaged. Raise fireplace floor with noncombustible material. Make sure material is secure.

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

IMPORTANT:

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 27.

Installation Items Needed

• hardware package (provided with heater)

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

• sealant (resistant to propane/LP gas, not provided)

• electric drill with 3/16" masonry drill bit

Note:

Install optional GHRCTA Receiver and Hand-Held Remote Control Kit (see Accessories, page 36) before installing gas log heater (Remote-Ready Models Only). See installation instructions included with the kit.

1. Apply pipe joint sealant lightly to male threads of gas fitting

(not provided). For Variable Manually-Controlled and Thermostatically-Controlled Models connect approved flexible gas hose to gas regulator of heater (see Figure 11, page 11). For Remote-Ready models connect approved flexible gas hose to inlet side of gas control (see Figure 12, page 11).

IMPORTANT:

ing flexible gas hose (V ariable Manually-Controlled and Thermostatically-Controlled Models Only).

2. Locate mounting brackets, bolts, and nuts in hardware pack-

age (V ariable Manually-Controlled and Thermostatically-Controlled Models Only). Attach mounting brackets to heater base (see Figure 13, page 11). Attach nuts finger tight.

Make sure the heater burners are level. If heater is

Hold gas regulator with wrench when connect-

For more information, visit www.desatech.com

104415-01L

INSTALLATION

Continued

3. Position heater base assembly in fireplace.

4. For Variable Manually-Controlled and Thermostatically-Controlled Models mark screw locations through holes in mounting brackets (see Figure 13). For Remote-Ready Models mark screw locations through holes in front panel of base (see Figure 14). If installing in a brick-bottom fireplace, mark screw locations in mortar joint of bricks.

5. Remove heater base from fireplace.

6. Remove mounting brackets from heater base (Variable Manually-Controlled and Thermostatically-Controlled Models Only).

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

8. For Variable Manually-Controlled and Thermostatically-Controlled Models attach mounting brackets to fireplace floor using masonry screws provided in hardware package (see Figure 13). Reattach heater base to mounting brackets (see Figure 13). Tighten nuts firmly.

9. For Remote-Ready Models attach base, through holes in front panel of base, to fireplace floor using masonry screws provided in hardware package (see Figure 14).

10. Connect to gas supply. See Connecting To Gas Supply, page 12.

Installing Heater Base Assembly (Cont.)

Mounting Bracket Screw

Mounting Bracket Nut

Figure 13 - Attaching Heater to Fireplace Floor (Variable ManuallyControlled and Thermostatically-Controlled Models Only)

Masonry Screw

INSTALLATION

Masonry Screw

Mounting Bracket

Masonry Screw

Heater Gas Regulator

Flexible Gas Hose (if allowed by local codes)

Figure 11 - Attaching Flexible Gas Hose to Heater Gas Regulator (Variable Manually-Controlled and Thermostatically-Controlled Models Only)

Gas Control

Flexible Gas Hose (if allowed by local codes)

Figure 12 - Attaching Flexible Gas Hose to Heater Gas Regulator (Remote-Ready Models Only)

Figure 14 - Attaching Base to Fireplace Floor (Remote-Ready Models Only)

104415-01L

For more information, visit www.desatech.com

INSTALLATION

Connecting To Gas Supply

INSTALLATION

Continued

CONNECTING TO GAS SUPPLY

WARNING: This appliance requires a 1/2" NPT (National Pipe Thread) inlet connection to the pressure regulator.

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 regulator (not supplied). Install the external regulator between the heater and propane/LP supply.

WARNING: Never connect natural gas fireplace to private (non-utility) gas wells. This gas is commonly known as wellhead gas.

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) (not 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 Accessories, page 36.

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 pressure, heater regulator damage could occur. Install external regulator with the vent pointing down as shown in Figure 15. Pointing the vent down protects it from freezing rain or sleet.

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 Figures 16 or 17 page 13, depending on your model).

IMPORTANT:

location. The equipment shutoff valve is for turning on or shutting off the gas to the appliance.

Check your building codes for any special requirements for locating equipment shutoff valve to fireplaces.

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 Figures 16 or 17 page 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.

CAUTION: Avoid damage to regulator. Hold gas regulator with wrench when connecting it to gas piping and/or fittings (Variable Manually-Controlled and Thermostatically-Controlled Models Only).

CAUTION: Avoid damage to gas control. Hold gas control with wrench when connecting it to gas piping and/or fittings (Remote-Ready Models Only).

Install equipment shutoff valve in an accessible

External Regulator Propane/LP Supply Tank

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

For more information, visit www.desatech.com

Vent Pointing Down

Figure 15 - External Regulator With Vent Pointing Down

104415-01L

+ 28 hidden pages