Desa 102783-01B Quick start guide

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DESA INTERNATIONAL

UNVENTED(VENT-FREE)

PROPANE GAS LOG HEATER

ManuallyControlModelsAlsoDesignedCertifiedasVentedDecorativeAppliance

This appliance may be installed in an aftermarket* manufactured (mobile) home,

where not prohibited by state or local codes.

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

OWNER’S OPERATION AND INSTALLATION MANUAL

WARNING: If the information in this

manual is not followed exactly, a fire or

explosion may result causing property

damage, personal injury, or loss of life.

— Do not store or use gasoline or other

flammable vapors and liquids in the

vicinity of this or any other appliance.

— WHAT TO DO IF YOU SMELL GAS

• Do not try to light any appliance.

• Do not touch any electrical switch;

do not use any phone in your build-

ing.

• Immediately call your gas supplier

fromaneighbor’sphone.Followthe

gas supplier’s instructions.

• If you cannot reach your gas sup-

plier, call the fire department.

— Installation and service must be per-

formedbya qualified installer,service

agency, or the gas supplier.

WARNING:Improperinstallation,adjust-

ment,alteration,service,ormaintenance

can cause injury or property damage.

Referto this manual for correct installa-

tion and operational procedures. For

assistanceoradditionalinformationcon-

sultaqualifiedinstaller,serviceagency,

or the gas supplier.

WARNING:Thisgas logsetisforinstal-

lation in a masonry solid fuel burning

fireplace, a U.L. listed manufactured

solid fuel burning fireplace or an AGA

design certified vent-free firebox listed

for use with these gas log models.

WARNING: This is an unvented gas-

fired heater. It uses air (oxygen) from

the room in which it is installed. Provi-

sionsforadequatecombustionandven-

tilation air must be provided. Refer to

AirforCombustionandVentilation

sec-

tion in this manual.

18" and 24" Variable Manually-Controlled Models

FLAME-MAX™

Standard Split

Combo Design

102783

CONTENTS SECTION PAGE

SAFETY

INFORMATION WARNING ICON G 001 WARNINGS

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.

WARNINGICON G001

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.

Propane Gas: Propane gas is 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.

Safety Information continues on next page

Safety Information................................................................................... 2

Product Identification .............................................................................. 4

Local Codes ............................................................................................. 4

Unpacking................................................................................................ 4

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

Air for Combustion and Ventilation........................................................ 5

Installing .................................................................................................. 9

Check Gas Type ............................................................................... 9

Installation and Clearances (Vent-Free Operation Only)................. 10

Installing Damper Clamp Accessory for Vented Operation ............ 14

Installing Heater Base Assembly ..................................................... 15

Connecting to Gas Supply................................................................ 16

Checking Gas Connections .............................................................. 18

Installing Logs.................................................................................. 20

Operating Heater ..................................................................................... 21

Inspecting Burners................................................................................... 23

Cleaning and Maintenance ...................................................................... 24

Troubleshooting....................................................................................... 24

Technical Service .................................................................................... 28

Specifications .......................................................................................... 28

Service Hints ........................................................................................... 28

Replacement Parts ................................................................................... 29

Accessories .............................................................................................. 29

Illustrated Parts Lists ............................................................................... 30-31

Warranty Information .............................................................................. Back Cover

102783

SAFETY

INFORMATION

Continued

WARNING ICON G 001

WARNINGS

Continued

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

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 supply tank(s) inside any structure. Locate propane supply tank(s)

outdoors.

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

• immediatelycallyourgassupplierfromaneighbor’sphone.Followthegassupplier’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.

5. Never install the heater

• in a recreational vehicle

• wherecurtains,furniture, clothing,orother flammableobjectsareless than36inches

from the front, top, or sides of the heater

• in high traffic areas

• in windy or drafty areas

6. 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

willignite if highlyheated. Inspect chimney fluefor damage. Ifdamaged, operate heater

with flue damper closed.

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.

Alsoiffireplaceopeninghasventsatthebottom,youmustopentheventsbeforeoperating

heater.

8. You must operate this heater with a fireplace screen in place. Make sure fireplace screen

is closed before running heater.

9. This log heater is designed to be smokeless. If logs ever appear to smoke, turn off heater

and call a qualified service person.

Note:

During initial operation, slight smoking could

occur due to log curing and heater burning manufacturing residues.

10. 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.

11. Do not use a blower insert, heat exchanger insert or other accessory not approved for use

with this heater.

12. Thisheaterneeds fresh, outsideair ventilation torun properly. Thisheaterhas an oxygen

depletion sensor (ODS) pilot light safety system. The ODS shuts down the heater if not

enough fresh air is available. See Air for Combustion and Ventilation, pages 5 through 8.

If heater keeps shutting off, see Troubleshooting, pages 24 through 27.

13. Do not run heater

• where flammable liquids or vapors are used or stored

• under dusty conditions

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

15. Never place any objects on the heater.

16. 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 shut-down. Allow surface to cool before touching.

17. Carefully supervise young children when they are in the room with heater.

18. 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.

19. Donot operateheaterif anylog isbroken.Do notoperate heaterifa logis chipped(dime-

sized or larger).

20. Turn heater off and let cool before servicing. Only a qualified service person should

service and repair heater.

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

102783

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, also

known as NFPA 54*.

*Available from: American National Standards Institute, Inc.

1430 Broadway

New York, NY 10018

National Fire Protection Association, Inc.

Batterymarch Park

Quincy, MA 02269

1. Remove logs and heater base assembly from carton.

Note:

Do not pick up

heater base assembly by the burner. 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.

UNPACKING

PRODUCT

IDENTIFICATION

Figure 1 - Flame-Max

™

Standard Split Combo

Control Knob

Back Log

Base Assembly

Piezo Ignitor

Burner

Crossover Log

Front Log

102783

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 realistic, dancing yellow flames. This

heater is designed for vent-free operation with flue damper closed. State and local

codes in some areas prohibit the use of vent-free heaters. You can operate heater as a

vented product by opening flue damper.

Safety Device

This heater has a pilot with an Oxygen Depletion Sensor Shutoff System (ODS).

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

This heater shall not be installed in a confined space unless

provisions are provided for adequate combustion and ventilation

air. Read the following instructions to insure proper fresh air for

this and other fuel-burning appliances in your home.

Today’s homes are built more energy efficient than ever. New materials, increased

insulation, and new construction methods help reduce heat loss in homes. Home

owners weather strip and caulk around windows and doors to keep the cold air out

and the warm air in. During heating months, home owners want their homes as

airtight as possible.

While it is good to make your home energy efficient, your home needs to breathe.

Fresh air must enter your home. All fuel-burning appliances need fresh air for

proper combustion and ventilation.

Exhaust fans, 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.

Continued

102783

PROVIDING ADEQUATE VENTILATION

The following is exerpts from National Fuel Gas Code. NFPA 54/ANSI Z223.1,

Section 5.3, Air for Combustion and Ventilation.

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

1. Unusually Tight Contruction; 2. Unconfined Space; 3. Confined Space.

The information on pages 5 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 outside atmosphere have a continu-

ous water vapor retarder with a rating of one perm or less with open-

ings 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 wallpanels,at penetrationsforplumbing, electrical,and

gas lines, and at other openings.

If your home meets all of the three criteria above, you must provide addi-

tional fresh air. See

Ventilation Air From Outdoors

, page 8

If your home does not meet all of the three criteria above, proceed to page 6.

Unconfined Space

The National Fuel Gas Code, ANSIZ223.1, 1992, Section 5.3 defines uncon-

fined space as having a minimum air volume of 50 cubic feet (127 cubic cm)

for each 1000 Btu/Hr input rating of all appliances in the space (cubic feet

equals length x width x height of space). Include adjoining rooms only if there

are doorless passageways or ventilation grills between the rooms.

Confined Space

The National Fuel Gas Code, ANSIZ223.1, 1992, Section 5.3 defines confined

space as having an air volume of less than 50 cubic feet (127 cubic cm) for each

1000 Btu/Hr input rating of all appliances in the space (cubic feet equals length

x width x height of space). Include adjoining rooms only if there are doorless

passageways or ventilation grills between the rooms.

AIR FOR

COMBUSTION

AND

VENTILATION

Continued

102783

AIR FOR

COMBUSTION

AND

VENTILATION

Continued

DETERMINING 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:

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

2560 cu. ft. (volume of space)

If additional ventilation to adjoining room is supplied with grills or openings, add the

volume of these rooms to the total volume of the space.

2. Divide the space volume by 50 cubic feet to determine the maximum Btu/Hr the space

can support.

____________ (volumeofspace)÷50cu.ft.=(maximumBtu/Hrthespacecansupport)

Example:

2560 cu. ft. (volume of space) ÷50 cu. ft. = 51.2 or 51,200 (maximum

Btu/Hr the space can support)

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

Vent-free heater ___________________ Btu/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 40,000 Btu/Hr

Vent-free heater +31,500 Btu/Hr

Total =71,500 Btu/Hr

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

outdoors and vents to the outdoors.

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

used.

_________________ Btu/Hr (maximum the space can support)

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

Example:

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

71,500 Btu/Hr (actual amount of Btu/Hr used)

The space in the above example is a confined space because the actual Btu/Hr used is more

than the maximum Btu/Hr the space can support. You must provide additional fresh air.

Your options are as follows:

A. Rework worksheet, adding the space of an adjoining room. If the extra space provides

an unconfined space, remove door to 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 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.

Continued

102783

AIR FOR

COMBUSTION

AND

VENTILATION

Continued

WARNING

If the area in which the heater may be operated is smaller than

that defined as an unconfined space, provide adequate combus-

tion and ventilation air by one of the methods described in the

National Fuel Gas Code, ANSI Z223.1, 1992, Section 5.3.

VENTILATION AIR

Ventilation Air From Inside Building

This fresh air would come from an adjoining unconfined space. When ventilating to an

adjoiningunconfinedspace,youmustprovide twopermanent openings:one within12" ofthe

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 NFPA 54/ANSI Z223.1, Section 5.3, Air for Combustion

and Ventilation for required size of ventilation grills or ducts.

WARNING

Rework worksheet, adding the space of the adjoining unconfined

space.

The combined spaces must have enough fresh air to supply all

appliances in both spaces.

Figure 3 - Ventilation Air from Outdoors

Ventilation Air From Outdoors

Provide extra fresh air by using ventilation grills or ducts. You must provide two perma-

nent openings: one within 12" of the ceiling and one within 12" of the floor. Connect these

items directly to the outdoors or spaces open to the outdoors. These spaces include attics

and crawl spaces.

IMPORTANT:

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

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

vent.

Figure 2 - Ventilation Air from Inside Building

Outlet

Air Ventilated

Attic

Outlet

Air

Inlet

Air

Inlet Air Ventilated

Crawl Space

Crawl

Space

To Attic

Remove

Door into

Adjoining

Room,

Option

Ventilation Grills

Into Adjoining Room,

Option 2

Ventilation

Grills

Into Adjoining

Room,

Option 1

12"

102783

INSTALLING NOTICE

Aqualifiedservicepersonmustinstallheater.Followalllocalcodes.

WARNING ICON G 001

WARNING

Before installing in a solid fuel burning fireplace, the chimney flue

andfireboxmustbecleanedofsoot,creosote,ashesandloosepaint

by a qualified chimney cleaner. Creosote will ignite if highly heated.

Inspect chimney flue for damage. If damaged, operate heater with

flue damper closed.

WARNING ICON G 001

WARNING

Sealanyfreshairventsorashclean-outdoorslocatedonfloororwall

of fireplace. If not, drafting may cause pilot outage or sooting. Use a

heat-resistant sealant. Do not seal chimney flue damper.

WARNING ICON G 001

WARNING

Never install the heater

• in a bedroom or bathroom

• in a recreational vehicle

• wherecurtains,furniture,clothing,orotherflammableobjectsare

less than 36 inches from the front, top, or sides of the heater

• in high traffic areas

• in windy or drafty areas

WARNING ICON G 001

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 in the air

(such as tobacco smoke) exist, may discolor walls.

IMPORTANT:

Vent-free heaters add moisture to the air. Although this is benefi-

cial, installing heater in rooms without enough ventilation air may cause mildew to

form from too much moisture. See Air for Combustion and Ventilation, pages 5

through 8.

CHECK GAS TYPE

Use only propane gas. If your gas supply is not propane, do not install heater. Call

dealer where you bought heater for proper type heater.

NOTICE

State or local codes may only allow operation of this appliance in a

vented configuration. Check your state or local codes.

Continued

102783

INSTALLING

Continued

INSTALLATION AND CLEARANCES (Vent-Free Operation Only)

Figure 4 - Minimum Clearance to Wall and Ceiling

WARNING

Maintain the minimum clearances. If you can, provide greater clear-

ances from floor, ceiling, and adjoining wall.

LOG SIZING REQUIREMENTS

Log Minimum Firebox Size

Size Height Depth Front Width Rear Width

18" 17" 14" 20" 18"

24" 17" 14" 26" 22"

MINIMUM FIREPLACE CLEARANCE

TO COMBUSTIBLE MATERIALS

Log Size Side Wall Ceiling Floor

18” and 24" 16" 42" 5"

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

masonry or U.L. listed manufactured fireplace.

Minimum Wall and Ceiling Clearances (see Figure 4)

A. Clearances from the side of the fireplace opening to any combustible wall

should not be less than 16 inches.

B. Clearances from the top of the fireplace opening to the ceiling should not be

less than 42 inches.

42"

16"

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