Desa A Owner's Operation And Installation Manual

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BLUE-FLAME VENT-FREE

PROPANE GAS HEATER

OWNER’S OPERATION AND INSTALLATION MANUAL

Heater Sizes: 18,000 BTU/Hr Non-Thermostat,

18,000 BTU/Hr Thermostat, and 28,000 BTU/Hr Thermostat

“A” Model Heaters

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.

Save this manual for future reference.

CONTENTS

SECTION PAGE

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

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

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

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

Product Features ............................................................................ 4

Fresh Air For Combustion and Ventilation ...................................5

Installing To Wall..........................................................................9

Connecting To Gas Supply............................................................14

Checking Gas Connections............................................................15

Operating Heater (Thermostat Models).........................................17

Operating Heater (Non-Thermostat Model) .................................. 20

Inspecting Burner ..........................................................................22

Cleaning And Maintenance ........................................................... 24

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

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

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

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

Service Publications ......................................................................28

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

Parts Centrals.................................................................................29

Accessories ....................................................................................30

Illustrated Parts List.......................................................................31-32

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

SAFETY

INFORMATION

WARNINGS

WARNING ICON G 001

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

WARNING ICON G 001

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 propane gas. The odor helps you detect a propane gas leak. However, the odor added to propane gas can fade. Propane 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

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SAFETY

WARNINGS

Continued

INFORMATION

Continued

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

1. Use only propane gas. Do not convert heater to use different fuel type.

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

• 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.

5. Never install the heater

• in a recreational vehicle

• where curtains, furniture, clothing, or other flammable objects are less than 36 inches from the front, top, or sides of the heater

• as a fireplace insert

• in high traffic areas

• in windy or drafty areas

6. This heater needs fresh, outside air ventilation to run properly. This heater has an oxygen depletion sensor (ODS) pilot light safety system. The ODS shuts down the heater if not enough fresh air is available. See Fresh Air for Combustion and Ventilation, pages 5 through 8.

7. Never run heater in small, closed room. Open door into next room to help ventilate.

8. If heater shuts off, do not relight until you provide fresh, outside air. If heater keeps shutting off, have it serviced.

9. Do not run heater

• where flammable liquids or vapors are used or stored

• under dusty conditions

10.Never place any objects on the heater.

11.Surface of heater 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.

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

13.Make sure grill guard is in place before running heater.

14.Do not use heater if any part has been 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.

15.Turn off and unplug heater and let cool before servicing. Only a qualified service person should service and repair heater.

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

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PRODUCT

IDENTIFICATION

Ignitor Button Control Knob

Grill Guard

Glass Panel

Front Panel

Figure 1 - Vent-Free Propane Gas Heater (28,000 BTU/Hr Model Shown)

Heater Cabinet

LOCAL CODES

UNPACKING

PRODUCT

FEATURES

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 heater from carton.

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

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

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.

Thermostatic Heat Control

(Thermostat Models Only)

Thermostat models have a thermostat sensing bulb and a control valve. This results in the greatest heater comfort. This can also result in lower gas bills.

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FRESH AIR

WARNING

FOR

COMBUSTION

AND

VENTILA TION

This heater must have fresh air for proper operation. If not, poor fuel combustion could result. 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.

PRODUCING ADEQUATE 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 b. weather stripping has been added on openable windows and doors c. caulking or sealants are applied to areas such as joints around window

and door frames, between sole plates and floors, between wall-ceiling

joints, between wall panels, at penetrations for plumbing, electrical, and

gas lines, and at other openings.

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

If your home does not meet all of the three criteria above, continue reading.

Ventilation Air From Outdoors

and

, page 8

and

Unconfined Space

An unconfined space has a minimum air volume of 50 cubic feet 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

A confined space has an air volume of less than 50 cubic feet 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.

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Continued

FRESH AIR

FOR

COMBUSTION

AND

VENTILA TION

Continued

DETERMINING FRESH-AIR FLOW FOR HEATER LOCATION

Determining if You Have a Confined or Unconfined Space

Use this worksheet 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:

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.

____________ (volume of space) ÷ 50 cu. ft. = (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.

Example:

* 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 extra space provides

an unconfined space, remove door to adjoining room or add ventilation grills between

rooms. See Ventilation Air From Inside Building, page 7. 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.

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

2560 cu. ft. (volume of space)

2560 cu. ft. (volume of space) ÷ 50 cu. ft. = 51.2 or 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

Gas water heater 40,000 BTU/Hr Vent-free heater + 18,000 BTU/Hr Total = 58,000 BTU/Hr

51,200 BTU/Hr (maximum the space can support) 58,000 BTU/Hr (actual amount of BTU/Hr used)

You must provide additional ventilation air in a confined space.

WARNING

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FRESH AIR

FOR

COMBUSTION

AND

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).

VENTILA TION

Continued

WARNING

Rework worksheet, adding the space of the adjoining unconfined space. appliances in both spaces.

into Adjoining

The combined spaces must have enough fresh air to supply all

12"

Ventilation Grills

Ventilation

Grills

Room,

Option 1

Remove Door into Adjoining

Room,

Option 3

Into Adjoining Room,

Option 2

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12"

Figure 2 - Ventilation Air from Inside Building

Continued

FRESH AIR

FOR

COMBUSTION

AND

VENTILA TION

Continued

VENTILATION AIR

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 NFPA 54/ANSI Z223.1, Section 5.3, Air for Combustion and Ventilation for required size of ventilation grills or ducts.

IMPORTANT:

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

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

(Continued)

Outlet Air

Inlet Air

Outlet Air

Inlet Air

Figure 3 - Ventilation Air from Outdoors

Ventilated Attic

Ventilated

Crawl Space

To Attic

Crawl

Space

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INSTALLING

TO WALL

NOTICE

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

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.

INSTALLATION ITEMS

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

• external regulator (supplied by installer, see page 14)

• piping (check local codes)

• sealant (resistant to propane gas)

• manual shutoff valve *

* An A.G.A. design-certified manual shutoff valve with 1/8" NPT tap is an acceptable alternative to test gauge connection. Purchase the optional A.G.A. design-certified manual shutoff valve from your dealer. See Accessories, page 30.

• ground joint union

• test gauge connection * (see Figure 14, page 15)

• sediment trap

• tee joint

• pipe wrench

LOCATING HEATER

This heater is designed to be mounted on a wall.

WARNING

Maintain the minimum clearances shown in Figure 4 (page 10). If you can, provide greater clearances from floor, ceiling, and joining wall.

You can locate heater on floor, away from a wall. An optional floor mounting stand is needed. Purchase the floor mounting stand from your dealer. See Accessories, page 30.

WARNING

Never install the heater

• in a bedroom or bathroom

• in a recreational vehicle

• where curtains, furniture, clothing, or other flammable objects are less than 36 inches from the front, top, or sides of the heater

• as a fireplace insert

• in high traffic areas

• in windy or drafty areas

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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:

installing heater in rooms without enough ventilation air may cause mildew to form from too much moisture. See Fresh Air for Combustion and Ventilation, pages 5 through 8.

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

Continued

INSTALLING

Minimum From Sides Of Heater

36"

FLOOR

CEILING

Minimum

Minimum To Top Surface Of Carpeting, Tile Or Other Combustible Material

Left Side

Right Side

TO WALL

Continued

CAUTION

If you install the heater in a home garage

• heater pilot and burner must be at least 18 inches above floor

• locate heater where moving vehicle will not hit it

For convenience and efficiency, install heater

• where there is easy access for operation, inspection, and service

• in coldest part of room

An optional fan kit is available from your dealer. See Accessories, page 30. If planning to use fan, locate heater near an electrical outlet.

Figure 4 - Mounting Clearances As Viewed From Front of Heater

THERMOSTAT SENSING BULB

(Thermostat Models Only)

The thermostat sensing bulb has been placed inside the heater for protection during shipping.

Locating Thermostat Sensing Bulb

1. Remove front panel of heater (see Figure 7, page 11).

2. Locate thermostat sensing bulb just under burner assembly.

IMPORTANT:

Attaching Thermostat Sensing Bulb

1. Remove thermostat sensing bulb from holders inside heater. Route through slot opening in bottom of heater.

2. Place clamp on thermostat sensing bulb as shown in Figure 5. Clamp is provided in hardware package.

3. Snap clamp into upper mounting hole as shown in Figure 5. Mounting hole is located on lower left edge on back of heater. Make sure the thermostat sensing bulb is pointing up.

Attach thermostat sensing bulb to back of heater for proper operation.

Thermostat Sensing Bulb

Clamp

Figure 5 - Attaching Thermostat Sensing Bulb

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INSTALLING

TO WALL

Continued

INSTALLING HEATER TO WALL

Mounting Bracket

The mounting bracket is located on back panel of heater. It has been taped there for shipping. Remove mounting bracket from back panel.

Mounting Bracket

Figure 6 - Bracket Location

Removing Front Panel Of Heater

1. Remove two screws near bottom corners of front panel.

2. Lift straight up on grill guard until it stops. Grill guard will slide up about 1/4".

3. Pull bottom of front panel forward, then down.

4. Remove cardboard packing from grill and glass.

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Figure 7 - Removing Front Panel Of Heater

Methods For Attaching Mounting Bracket To Wall

Only use last hole on each end of mounting bracket to attach bracket to wall. These two holes are 16 inches apart from their centers. Attach mounting bracket to wall in one of two ways.

1. Attaching to wall stud

2. Attaching to wall anchor

Attaching to wall stud This method provides the strongest hold. Insert mounting

screws through mounting bracket and into wall studs.

Attaching to wall anchor This method allows you to attach mounting bracket to

hollow walls (wall areas between studs) or to solid walls (concrete or masonry). Decide which method better suits your needs. Either method will provide a secure

hold for the mounting bracket.

Continued

INSTALLING

TO WALL

Marking Screw Locations

1. Tape mounting bracket to wall where heater will be located. Make sure mounting bracket is level.

Continued

WARNING

Maintain minimum clearances shown in Figure 8. If you can, provide greater clearances from floor and joining wall.

2. Mark screw locations on wall (see Figure 8).

Note:

Only mark last hole on each end of mounting bracket. Insert mounting

screws through these holes only.

3. Remove tape and mounting bracket from wall.

11"

Min.

Only Insert Mounting

Screws Through Last

Hole On Each End

Adjoining Wall

28,000 BTU/Hr Model 18,000 BTU/Hr Models

16"

18 3/4"

Min.

Floor

7 1/4"

Min.

Only Insert Mounting

Screws Through Last

Hole On Each End

Adjoining Wall

16"

Floor

18 3/4"

Min.

Figure 8 - Mounting Bracket Clearances

Attaching Mounting Bracket To Wall

Note:

Wall anchors, mounting screws, and spacers are in hardware package. The

hardware package is provided with heater.

Attaching to wall stud method

For attaching mounting bracket to wall studs

1. Drill holes at marked locations using 9/64" drill bit.

2. Place mounting bracket onto wall. Line up last hole on each end of bracket with holes drilled in wall.

3. Insert mounting screws through bracket and into wall studs.

4. Tighten screws until mounting bracket is firmly fastened to wall studs.

Attaching to wall anchor method

For attaching mounting bracket to hollow walls (wall areas between studs) or solid walls (concrete or masonry)

1. Drill holes at marked locations using 5/16" drill bit. For solid walls (concrete or masonry), drill at least 1" deep.

2. Fold wall anchor as shown in Figure 9.

3. Insert wall anchor (wings first) into hole. Tap anchor flush to wall.

Figure 9 - Folding Anchor

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INSTALLING

TO WALL

Continued

4. For thin walls (1/2" or less), insert red key into wall anchor. Push red key to “pop” open anchor wings.

IMPORTANT:

Do not hammer key!

For thick walls (over 1/2" thick) or solid walls, do not pop open wings.

Figure 10 - Popping Open Anchor Wings For Thin Walls

5. Place mounting bracket onto wall. Line up last hole on each end of bracket with wall anchors.

6. Insert mounting screws through bracket and into wall anchors.

7. Tighten screws until mounting bracket is firmly fastened to wall.

Placing Heater On Mounting Bracket

1. Locate two horizontal slots on back panel of heater.

2. Place heater onto mounting bracket. Slide horizontal slots onto stand-out tabs on mounting bracket.

Horizontal Slots

Stand-Out Tab

Mounting Bracket (attached to wall)

Figure 11 - Mounting Heater Onto Mounting Bracket

Installing Bottom Mounting Screws

1. Locate two bottom mounting holes. These holes are near bottom on back panel of heater (see Figure 12).

2. Mark screw locations on wall.

3. Remove heater from mounting bracket.

4. If installing bottom mounting screws into hollow or solid wall, install wall anchors. Follow steps 1 through 4 under Attaching To Wall Anchor Method, page 12. If installing bottom mounting screw into wall stud, drill holes at marked locations using 9/64" drill bit.

5. Replace heater onto mounting bracket.

6. Place spacers between bottom mounting holes and wall anchor or drilled hole.

7. Hold spacer in place with one hand. With other hand, insert mounting screw through bottom mounting hole and spacer. Place tip of screw in opening of wall anchor or drilled hole.

8. Tighten both screws until heater is firmly secured to wall. Do not over tighten.

Note:

Do not replace front panel at this time. Replace front panel after making

gas connections and checking for leaks (see pages 14-16).

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Figure 12 - Installing Bottom Mounting Screws

CONNECTING

TO GAS

SUPPLY

NOTICE

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

CAUTION

Never connect heater directly to the propane supply. This heater requires an external regulator (not supplied). Install the external regulator between the heater and propane supply.

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 13. Pointing the vent down protects it from freezing rain or sleet.

Propane Supply Tank

External Regulator

Vent Pointing Down

Figure 13 - External Regulator With Vent Pointing Down

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 large enough diameter to allow proper gas volume to heater. If pipe is too small, undue loss of pressure will occur.

Typical Pipe Diameters

18,000 BTU/Hr Models 3/8" or greater 28,000 BTU/Hr Model 1/2" or greater

Installation must include a manual shutoff valve, union, and plugged 1/8" NPT tap. Locate NPT tap within reach for test gauge hook up. NPT tap must be upstream from heater (see Figure 14, page 15).

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

CAUTION

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

Install sediment trap in supply line as shown in Figure 14, page 15. Locate sediment trap where it is within reach for cleaning. 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.

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CONNECTING

TO GAS

SUPPLY

Continued

IMPORTANT:

and/or fittings.

1/2" NPT Pipe Nipple

Hold pressure regulator with wrench when connecting it to gas piping

Pressure Regulator

Heater

Ground Joint Union

Cabinet

CHECKING

GAS

CONNECTIONS

Tee Joint

Test

Gauge

Connection *

Sediment

Trap

Reducer Bushing to 1/8" NPT

1/8" NPT Plug Tap

Tee Joint Pipe

Nipple Cap

3" Minimum

Figure 14 - Gas Connection

Manual Shutoff Valve *

From

Gas Meter

(4" W.C. to

10.5" W.C. Pressure)

WARNING

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

PRESSURE TESTING GAS SUPPLY PIPING SYSTEM

Test Pressures In Excess Of 1/2 PSIG

1. Disconnect heater and its individual manual shutoff valve from gas supply

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

099573

WARNING

Never use an open flame to check for a leak. Apply a mixture of liquid soap and water to all joints. Bubbles forming show a leak. Correct all leaks at once.

CAUTION

Make sure external regulator has been installed between propane supply and heater. See guidelines under

ply

, page 14.

piping system. Pressures in excess of 1/2 psig will damage heater regulator.

Connecting to Gas Sup-

Continued

CHECKING

GAS

CONNECTIONS

Continued

3. Pressurize supply piping system by either using compressed air or opening propane supply tank valve.

4. Check all joints of gas supply piping system. Apply mixture of liquid soap and water to gas joints. Bubbles forming show a leak.

5. Correct all leaks at once.

Test Pressures Equal To or Less Than 1/2 PSIG

1. Close manual shutoff valve (see Figure 15).

2. Pressurize supply piping system by either using compressed air or opening propane supply tank valve.

3. Check all joints from propane supply tank to manual shutoff valve (see Figure

16). Apply mixture of liquid soap and water to gas joints. Bubbles forming show a leak.

4. Correct all leaks at once.

PRESSURE TESTING HEATER GAS CONNECTIONS

1. Open manual shutoff valve (see Figure 15).

2. Open propane supply tank valve.

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

4. Check all joints from manual shutoff valve to thermostat gas valve (thermostat models) or control valve (non-thermostat model) (see Figure 16). Apply mixture of liquid soap and water to gas joints. Bubbles forming show a leak.

5. Correct all leaks at once.

6. Light heater (see Operating Heater, pages 17 through 22). Check all other internal joints for leaks.

7. Turn off heater (see To Turn Off Gas to Appliance, page 19 [thermostat models] or page 22 [non-thermostat model]).

8. Replace front panel.

Open

POSITION

Propane Supply Tank

Manual Shutoff Valve

OFF

POSITION

Closed

Figure 15 - Manual Shutoff Valve

Thermostat Gas Valve or Control Valve Location

Figure 16 - Checking Gas Joints

Manual Shutoff Valve

099573

OPERATING

HEATER

Thermostat Models

FOR YOUR SAFETY READ BEFORE LIGHTING

WARNING

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

A. This appliance has a pilot which must be lighted by hand. When lighting

the pilot, follow these instructions exactly.

B. BEFORE LIGHTING smell all around the appliance area for gas. Be sure

to smell next to the floor because some gas is heavier than air and will settle on the floor.

WHAT TO DO IF YOU SMELL GAS

• Do not try to light any appliance.

• Do not touch any electric switch; do not use any phone in your building.

• Immediately call your gas supplier from a neighbor’s phone. Follow the gas supplier’s instructions.

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

C. Use only your hand to push in or turn the gas control knob. Never use

tools. If the knob will not push in or turn by hand, don’t try to repair it, call a qualified service technician or gas supplier. Force or attempted repair may result in a fire or explosion.

D. Do not use this appliance if any part has been under water. Immediately

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

LIGHTING INSTRUCTIONS

1. STOP! Read the safety information above.

2. Make sure manual shutoff valve is fully open.

3. Turn control knob clockwise

Ignitor Button

IGNITOR

Clockwise

to the OFF position.

PILOT

OFF

Control Knob

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Figure 17 - Control Knob In The OFF Position

Continued

OPERATING

HEATER

Thermostat Models

Continued

4. Wait five (5) minutes to clear out any gas. Then smell for gas, including near the floor. If you smell gas, STOP! Follow “B” in the safety information at the top of page 17. If you don’t smell gas, go to the next step.

5. Turn control knob counterclockwise

C-clockwise

to the PILOT position. Press

in control knob for five (5) seconds (see Figure 17).

Note:

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

• If control knob does not pop up when released, contact a qualified service person or gas supplier for repairs.

6. With control knob pressed in, push down and release ignitor button. This will light pilot. The pilot is attached to the front of burner. The pilot can be seen through the glass panel. If needed, keep pressing ignitor button until pilot lights.

Note:

If pilot does not stay lit, refer to Troubleshooting, pages 24 through

27. Also contact a qualified service person or gas supplier for repairs. Until repairs are made, light pilot with match. To light pilot with match, see Manual Lighting Procedure, page 19.

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

Ignitor Electrode

Thermocouple

Figure 18 - Pilot

Note:

If pilot goes out, repeat steps 3 through 7. This heater has a safety

Pilot Burner

interlock system. Wait one (1) minute before lighting pilot again.

8. Turn control knob counterclockwise

to desired heating level. The

C-clockwise

main burner should light. Set control knob to any heat level between HI and LO.

Do not try to adjust heating levels by using the manual shutoff valve.

CAUTION

099573

OPERATING

TO TURN OFF GAS TO APPLIANCE

HEATER

Thermostat Models

Continued

Shutting Off Heater

1. Turn control knob clockwise

2. Turn off all electric power to the appliance if service is to be performed.

Shutting Off Burner Only (pilot stays lit)

1. Turn control knob clockwise

to the OFF position.

Clockwise

to the PILOT position.

Clockwise

THERMOSTAT CONTROL OPERATION

(Thermostat Models Only)

The thermostatic control used on these models differs from standard thermostats. Standard thermostats simply turn on and off the burner. The thermostat used on this heater senses the room temperature. The thermostat adjusts the amount of gas flow to the burner. This increases or decreases the burner flame height. At times the room may exceed the set temperature. If so, the burner will shut off. The burner will cycle back on when room temperature drops below the set temperature. The control knob can be set to any heat level between HI and LO.

Note:

The thermostat sensing bulb measures the temperature of air near the heater cabinet. This may not always agree with room temperature (depending on housing construction, installation location, room size, open air temperatures, etc.). Frequent use of your heater will let you determine your own comfort levels.

MANUAL LIGHTING PROCEDURE

1. Remove front panel (see Figure 7, page 11).

2. Follow steps 1 through 5 under Lighting Instructions, pages 17 and 18.

3. With control knob pressed in, strike match. Hold match to pilot until pilot

lights.

4. Keep control knob pressed in for 30 seconds after lighting pilot. After 30

seconds, release control knob.

5. Replace front panel.

099573

OPERATING

HEATER

Non-Thermostat

Model

FOR YOUR SAFETY READ BEFORE LIGHTING

WARNING

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

A. This appliance has a pilot which must be lighted by hand. When lighting

the pilot, follow these instructions exactly.

B. BEFORE LIGHTING smell all around the appliance area for gas. Be sure

to smell next to the floor because some gas is heavier than air and will settle on the floor.

WHAT TO DO IF YOU SMELL GAS

• Do not try to light any appliance.

• Do not touch any electric switch; do not use any phone in your building.

• Immediately call your gas supplier from a neighbor’s phone. Follow the gas supplier’s instructions.

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

C. Use only your hand to push in or turn the gas control knob. Never use

tools. If the knob will not push in or turn by hand, don’t try to repair it, call a qualified service technician or gas supplier. Force or attempted repair may result in a fire or explosion.

D. Do not use this appliance if any part has been under water. Immediately

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

LIGHTING INSTRUCTIONS

1. STOP! Read the safety information above.

2. Make sure manual shutoff valve is fully open.

OFF

Clockwise

to the OFF position.

PILOT

Control Knob

HIGH

LOW

3. Turn control knob clockwise

Ignitor Button

IGNITOR

Figure 19 - Control Knob In The OFF Position

099573

OPERATING

HEATER

Non-Thermostat

Model

Continued

4. Wait five (5) minutes to clear out any gas. Then smell for gas, including near the floor. If you smell gas, STOP! Follow “B” in the safety information at the top of page 20. If you don’t smell gas, go to the next step.

5. Press in control knob and turn counterclockwise

to the PILOT

C-clockwise

position. Keep control knob pressed in for five (5) seconds (see Figure 19).

Note:

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

• If control knob does not pop up when released, contact a qualified service person or gas supplier for repairs.

Note:

If pilot does not light, refer to Troubleshooting, pages 24 through 27. Also contact a qualified service person or gas supplier for repairs. Until repairs are made, light pilot with match. To light pilot with match, see Manual Lighting Procedure, page 22.

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

Note:

If pilot goes out, repeat steps 3 through 7.

Ignitor Electrode

Thermocouple

Figure 20 - Pilot

8. Turn control knob counterclockwise

C-clockwise

Pilot Burner

to the LOW position. The main burner should light. Set control knob to any heat level between HIGH and LOW. To turn control knob from LOW to a higher setting, press in the control knob and turn counterclockwise

Note:

Both HIGH and LOW are locked positions. You must press in control

C-clockwise

knob before turning it from these positions.

099573

CAUTION

Do not try to adjust heating levels by using the manual shutoff valve.

Continued

OPERATING

TO TURN OFF GAS TO APPLIANCE

HEATER

Non-Thermostat

Model

Continued

INSPECTING

BURNER

Shutting Off Heater

1. Turn control knob clockwise

2. Press in control knob and turn clockwise

3. Turn off all electric power to the appliance if service is to be performed.

Shutting Off Burner Only (pilot stays lit)

1. Turn control knob clockwise

to the PILOT position.

Clockwise

to the PILOT position.

Clockwise

to the OFF position.

MANUAL LIGHTING PROCEDURE

1. Remove front panel (see Figure 7, page 11).

2. Follow steps 1 through 5 under Lighting Instructions, pages 20 and 21.

3. With control knob pressed in, strike match. Hold match to pilot until pilot lights.

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

5. Replace front panel.

Check pilot flame pattern and burner flame pattern often.

PILOT FLAME PATTERN

Figure 21 shows a correct pilot flame pattern. Figure 22 shows an incorrect pilot flame pattern. The incorrect pilot flame is not touching the thermocouple. This will cause the thermocouple to cool. When the thermocouple cools, the heater will shut down.

Thermocouple

Figure 21 - Correct Pilot Flame Pattern

Thermocouple

Figure 22 - Incorrect Pilot Flame Pattern

Pilot Burner

Continued

099573

INSPECTING

BURNER

Continued

If pilot flame pattern is incorrect, as shown in Figure 22

• turn heater off (see To Turn Off Gas to Appliance, page 19 [thermostat models] or page 22 [non-thermostat model])

• see Troubleshooting, pages 24 through 27

BURNER FLAME PATTERN

Figure 23 shows a correct burner flame pattern. Figure 24 shows an incorrect burner flame pattern. The incorrect burner flame pattern shows yellow tipping of the flame. It also shows the flame higher than 1/2 the glass panel height.

WARNING

If yellow tipping occurs, your heater could produce increased levels of carbon monoxide. If burner flame pattern shows yellow tipping, follow instructions at bottom of this page.

NOTICE

Do not mistake orange flames with yellow tipping. Dirt or other fine particles enter the heater and burn causing brief patches of orange flame.

CORRECT FLAME PATTERN

AT HIGH POSITION

Figure 23 - Correct Burner Flame Pattern

INCORRECT FLAME PATTERN

AT HIGH POSITION

Figure 24 - Incorrect Burner Flame Pattern

If burner flame pattern is incorrect, as shown in Figure 24

• turn heater off (see To Turn Off Gas to Appliance, page 19 [thermostat models] or page 22 [non-thermostat model])

• see Troubleshooting, pages 24 through 27

1/2 GLASS HEIGHT

Yellow Tipping

1/2 GLASS HEIGHT

099573

CLEANING

AND

MAINTENANCE

WARNING

Turn off heater and let cool before cleaning.

CAUTION

You must keep control areas, burner, and circulating air passageways of heater clean. Inspect these areas of heater before each use. Have heater inspected yearly by a qualified service person. Heater may need more frequent cleaning due to excessive lint from carpeting, bedding material, etc.

ODS/PILOT AND BURNER

• Use a vacuum cleaner, pressurized air, or small, soft bristled brush to clean.

CABINET

Air Passageways

• Use a vacuum cleaner or pressurized air to clean.

Exterior

• Use a soft cloth dampened with a mild soap and water mixture. Wipe the cabinet to remove dust.

TROUBLE-

SHOOTING

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

WARNING

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

CAUTION

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

OBSERVED PROBLEM

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

POSSIBLE CAUSE

1. Ignitor electrode positioned wrong

2. Ignitor electrode broken

3. Ignitor electrode not connected to ignitor cable

4. Ignitor cable pinched or wet

5. Piezo ignitor nut is loose

6. Broken ignitor cable

7. Bad piezo ignitor

REMEDY

1. Replace ignitor

2. Replace ignitor

3. Reconnect ignitor cable

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

5. Tighten nut holding piezo ignitor to heater cabinet. Nut is located inside heater cabinet at top

6. Replace ignitor cable

7. Replace piezo ignitor

099573

TROUBLE-

SHOOTING

Continued

OBSERVED PROBLEM

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

POSSIBLE CAUSE

1. Gas supply turned off or manual shutoff valve closed

2. Control knob not in PILOT position

3. Control knob not pressed in while in PILOT position

4. Air in gas lines when installed

5. Depleted gas supply

6. ODS/pilot is clogged

7. Gas regulator setting is not correct

REMEDY

1. Turn on gas supply or open manual shutoff valve

2. Turn control knob to PILOT position

3. Press in control knob while in PILOT position

4. Continue holding down control knob. Repeat igniting operation until air is removed

5. Contact local propane gas company

6. Clean ODS/pilot (see

Cleaning and Maintenance, page 24) or

replace ODS/pilot assembly

7. Replace gas regulator

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

1. Control knob not fully pressed in

2. Control knob not pressed in long enough

3. Safety interlock system has been triggered (thermostat models only)

4. Manual shutoff valve not fully open

5. Thermocouple connection loose at control valve

6. Pilot flame not touching thermocouple, which allows thermocouple to cool, causing pilot flame to go out. This problem could be caused by one or both of the following: A) Low gas pressure B) Dirty or partially clogged ODS/pilot

7. Thermocouple damaged

8. Control valve damaged

1. Press in control knob fully

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

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

4. Fully open manual shutoff valve

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

6. A) Contact local propane gas company

B) Clean ODS/pilot (see

Cleaning and Maintenance, page 24) or

replace ODS/pilot assembly

7. Replace thermocouple

8. Replace control valve

099573

Continued

TROUBLE-

OBSERVED PROBLEM

POSSIBLE CAUSE

REMEDY

SHOOTING

Continued

Burner does not light after ODS/pilot is lit

Delayed ignition of burner

Burner backfiring during combustion

1. Burner orifice is clogged

2. Burner orifice diameter is too small

3. Inlet gas pressure is too low

1. Manifold pressure is too low

2. Burner orifice is clogged

1. Burner orifice is clogged or damaged

2. Burner damaged

3. Gas regulator defective

1. Clean burner (see

Cleaning and Maintenance, page 24) or

replace burner orifice

2. Replace burner orifice

3. Contact local propane gas company

1. Contact local propane gas company

2. Clean burner (see

Cleaning and Maintenance, page 24) or

replace burner orifice

1. Clean burner (see

Cleaning and Maintenance, page 24) or

replace burner orifice

2. Replace burner

3. Replace gas regulator

Yellow flame during burner combustion

Slight smoke or odor during initial operation

Heater produces a whistling noise when burner is lit

1. Not enough air

2. Gas regulator defective

1. Residues from manufacturing processes

1. Turning control knob to HI position when burner is cold

2. Air in gas line

3. Air passageways on heater blocked

4. Dirty or partially clogged burner orifice

1. Check burner for dirt and debris. If found, clean burner (see

Cleaning and Maintenance, page 24)

2. Replace gas regulator

1. Problem will stop after a few hours of operation

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

2. Operate burner until air is removed from line. Have gas line checked by local propane gas company

3. Observe minimum installation clearances (see Figure 4, page 10)

4. Clean burner (see

Cleaning and Maintenance, page 24) or

replace burner orifice

099573

TROUBLE-

SHOOTING

Continued

WARNING

If you smell gas

• Shut off gas supply.

• Do not try to light any appliance.

• Do not touch any electrical switch; do not use any phone in your building.

• Immediately call your gas supplier from a neighbor’s phone. Follow the gas supplier’s instructions.

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

IMPORTANT:

Cleaning supplies, paint, paint remover, cigarette smoke, cements and glues, new carpet or textiles, etc., create fumes. These fumes may mix with combustion air and create odors.

OBSERVED PROBLEM

Heater produces a clicking/ticking noise just after burner is lit or shut off

Heater produces unwanted odors

Heater shuts off in use (ODS operates)

Operating heater where impurities in air exist may create odors.

POSSIBLE CAUSE

1. Metal expanding while heating or contracting while cooling

1. Heater burning vapors from paint, hair spray, glues, etc. (See

TANT

statement above)

2. Low fuel supply

3. Gas leak. See Warn-

ing statement at top of page

1. Not enough fresh air is available

2. Low line pressure

3. ODS/pilot is partially clogged

IMPOR-

REMEDY

1. This is common with most heaters. If noise is excessive, contact qualified service person

1. Ventilate room. Stop using odor causing products while heater is running

2. Refill supply tank

3. Locate and correct all leaks (see Checking Gas Connections, page 15)

1. Open window and/or door for ventilation

2. Contact local propane gas company

3. Clean ODS/pilot (see

Cleaning and Maintenance, page 24)

Gas odor even when control knob is in OFF position

Gas odor during combustion

099573

1. Gas leak. See Warning statement at top of page

2. Control valve defective

1. Foreign matter between control valve and burner

2. Gas leak. See Warn-

ing statement at top of page

1. Locate and correct all leaks (see Checking Gas Connections, page 15)

2. Replace control valve

1. Take apart gas tubing and remove foreign matter

2. Locate and correct all leaks (see Checking Gas Connections, page 15)

TECHNICAL

SERVICE

You may have further questions about installation, operation, or troubleshooting. If so, contact DESA International’s Technical Service Department at 1-800-323-

5190.

SPECIFICATIONS

SERVICE

HINTS

18,000 BTU/Hr 28,000 BTU/Hr Models Model

B.T.U (Variable) 9,000/18,000 14,000/28,000 Type Gas Propane Only Propane Only Ignition Piezo Piezo Pressure Regulator Setting 8" W.C. 8" W.C. Inlet Gas Pressure (in. of water)

Maximum 14" 14" Minimum 11" 11"

Dimensions, Inches (H x W x D)

Heater 23.5 x 18.5 x 8.0 23.5 x 25.9 x 8.0 Carton 25.8 x 21.3 x 10.1 25.8 x 28.7 x 10.1

Weight (pounds)

Heater 22 30 Shipping 27 35

When gas pressure is too low

• pilot will not stay lit

• burner will have delayed ignition

• heater will not produce specified heat

• propane gas supply may be low

SERVICE

PUBLICATIONS

When gas quality is bad

• pilot will not stay lit

• burner will produce flames and soot

• heater will backfire when lit

You may feel your gas pressure is too low or gas quality is bad. If so, contact your local propane gas supplier.

You can purchase a service manual from the address listed on the back page of this manual. Send a check for $5.00 payable to DESA International.

099573

REPLACEMENT

PARTS

Note:

Use only original replacement parts. This will protect your warranty cover-

age for parts replaced under warranty.

Parts Under Warranty

Contact authorized dealers of this product. If they can’t supply original replacement part(s), either contact your nearest Parts Central (see below) or call DESA International’s Technical Service Department at 1-800-323-5190.

When calling DESA International, have ready

• your name

• your address

• model number of your heater

• how heater was malfunctioning

• type of gas used (propane or natural gas)

• purchase date

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

Parts Not Under Warranty

When calling DESA International, have ready

• model number of your heater

• the replacement part number

PARTS

CENTRALS

These Parts Centrals are privately owned businesses. They have agreed to support our customer’s needs by providing original replacement parts and accessories.

Portable Heater Parts

342 N. County Rd. 400 East Valparaiso, IN 46383 All States 219-462-7441 1-800-362-6951

FBD

601 Hope Street Bowling Green, KY 42101 502-796-8406 1-800-654-8534

Master Service Center

1184 Wilson NW Walker, MI 49504 616-791-4760 1-800-446-1446

Washer Equipment Co.

1715 Main Street Kansas City, MO 64108 KS, MO, AR 816-842-3911

East Coast Energy Products

833 Broadway W. Long Branch, NJ 07764 908-870-8809 1-800-755-8809

Tarantin Tank Co.

P.O. Box 6129 Freehold, NJ 07728 908-780-9340 1-800-922-0724

Albany Ladder

1586-90 Central Avenue Albany, NY 12205 NY, MA, VT 518-869-5335 1-800-354-7368

Dayton Hardware

P.O. Box 275 North Dayton Station Dayton, OH 45404 All States 513-258-3721 OH 1-800-762-3426

Halco Enterprises

208 Carter Drive, Unit 21 West Chester, PA 19382 215-696-2670 1-800-368-0803

Cans Unlimited, Inc.

P.O. Box 645 Taylor, SC 29687 All States 803-879-3009 1-800-845-5301

Dealers LP

P.O. Box 341145 Bartlett, TN 38184 AL, TN 901-386-8780

099573

ACCESSORIES

Purchase these heater accessories from your local dealer. If they can not supply these accessories, either contact your nearest Parts Central (see page 29) or call DESA International’s Parts Department at 1-800-972-7879 for information. You can also write to the address listed on the back page of this manual.

FAN KITS - GA2100A & GA3100

For all models. Provides better heat distribution. Makes heater more efficient. Complete installation and operating instructions included.

FLOOR MOUNTING STAND 18,000 BTU/Hr Models - GA4000B

28,000 BTU/Hr Model - GA4010B

For locating heater on the floor, away from a wall. Complete installation and operating instructions included.

MANUAL SHUTOFF VALVE - GA5010

For all models. Manual shutoff valve with 1/8" NPT tap.

099573

ILLUSTRATED

PARTS LIST

Manual Control 18,000 BTU/Hr NonThermostat Model

(Parts list on page 33)

12-1

099573

12-2

12 ODS/Pilot Assembly

(Parts list on page 33)

Shown. See page 31 for

Manual Control Valve.

NOTE: Thermostat Gas Valve

099573

PARTS LIST

PART NUMBER FOR KEY 18,000 BTU/Hr 18,000 BTU/Hr 28,000 BTU/Hr NO. Non-Thermostat Thermostat Thermostat DESCRIPTION QTY.

1 098304-01 098304-01 098304-01 Screw, #10 x 3/8" 2 2 098742-03 098742-03 098742-04 Front Panel (Comfort Glow) 1

— 098742-07 098742-08 Front Panel (Touch’n Glow) 1 3 098197-01 098197-01 098197-02 Grill Guard 1 4 098342-01 098342-01 098342-01 Clip, Grill Guard 2 5 098533-01AA 098533-01AA 098533-02AA Bottom Glass Retainer 1 6 098260-01 098260-01 098260-02 Glass Panel 1 7 098532-01AA 098532-01AA 098532-02AA Top Glass Retainer 1 8 M11084-26 M11084-26 M11084-26 Screw, #10 x 3/8" 4 9 098352-01BR 098352-01BR 098352-02BR Deflector Unit 1 10 098271-02 098271-02 098271-02 Ignitor Cable 1 11 098249-01 098249-01 098249-01 Nut, M5 2 12 098245-03 098245-03 098245-03 ODS/Pilot Assembly 1 12-1 098514-01 098514-01 098514-01 Thermocouple 1 12-2 098515-01 098515-01 098515-01 Ignitor Electrode 1 13 099120-02 099120-02 099126-02 Burner 1 14 098517-01 098517-01 098517-01 3/16" Pilot Tubing 1 15 098251-01 098251-01 098251-03 Injector 1 16 098250-01 098250-01 098250-01 Injector Holder 1 17 098867-06 098867-06 098867-06 Pressure Regulator 1 18 099553-01 099553-01 099553-01 Pilot Shield 1 19 098519-01 098518-01 098518-01 3/8" Outlet (Burner) Tubing 1 20 098298-03 098297-03 098297-03 3/8" Inlet Tubing 1 21 — 098264-02 098264-02 3/8" NPT Male Connector 1 22 — 098276-01 098276-01 1/8" NPT Plug 1 23 — 098277-01 098277-01 3/8" to 1/8" NPT Bushing 1 24 098265-01 098265-01 098265-01 3/8" NPT Male Elbow 1 25 — 098275-01 098275-01 3/8" NPT Plug 1 26 — 098522-01 098522-04 Thermostat Gas Valve 1 26 098246-01 — — Control Valve 1 27 098529-01 098530-01 098531-01 Cabinet 1 28 097159-01 097159-01 097159-01 Piezo Ignitor 1 29 098508-01 — — Valve Retainer Nut 1 30 M11084-26 M11084-26 M11084-26 Screw, #10 x 3/8" 2 31 M11084-38 M11084-38 M11084-38 Screw, #8 x 3/8" 2 32 099066-01 099066-01 099066-01 Mounting Bracket 1 33 098268-02 — — 1/2" NPT Female Elbow 1 34 098354-01 — — Control Knob 1

This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Replacement Parts on page 29 of this manual.

098306-01 098305-01 098305-01 Control Position Label 1

099573

PARTS AVAILABLE — NOT SHOWN

NOTES

099573

NOTES

099573

WARRANTY INFORMATION

KEEP THIS WARRANTY

Model Serial No. Date Purchased

Always specify model and serial numbers when communicating with the factory.

We reserve the right to amend these specifications at any time without notice. The only warranty applicable is our standard written warranty. We make no other warranty, expressed or implied.

LIMITED WARRANTY

BLUE-FLAME VENT-FREE PROPANE GAS HEATERS

DESA International warrants this product to be free from defects in materials and components for one (1) year from the date of first purchase, provided that the product has been properly installed, operated and maintained in accordance with all applicable instructions. To make a claim under this warranty the Bill of Sale or cancelled check must be presented.

This warranty is extended only to the original retail purchaser. This warranty covers the cost of part(s) required to restore this heater to proper operating condition and an allowance for labor when provided by a DESA Authorized Service Center. Warranty part(s) MUST be obtained through authorized dealers of this product and/or DESA International who will provide original factory replacement parts. Failure to use original factory replacement parts voids this warranty. The heater MUST be installed by a qualified installer in accordance with all local codes and instructions furnished with the unit.

This warranty does not apply to parts that are not in original condition because of normal wear and tear, or parts that fail or become damaged as a result of misuse, accidents, lack of proper maintenance or defects caused by improper installation. Travel, diagnostic cost, labor, transportation and any and all such other costs related to repairing a defective heater will be the responsibility of the owner.

TO THE FULL EXTENT ALLOWED BY THE LAW OF THE JURISDICTION THAT GOVERNS THE SALE OF THE PRODUCT; THIS EXPRESS WARRANTY EXCLUDES ANY AND ALL OTHER EXPRESSED WARRANTIES AND LIMITS THE DURATION OF ANY AND ALL IMPLIED WARRANTIES, INCLUDING WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE TO ONE (1) YEAR FROM THE DATE OF FIRST PURCHASE; AND DESA INTERNATIONAL’S LIABILITY IS HEREBY LIMITED TO THE PURCHASE PRICE OF THE PRODUCT AND DESA INTERNATIONAL SHALL NOT BE LIABLE FOR ANY OTHER DAMAGES WHATSOEVER INCLUDING INDIRECT, INCIDENTAL OR CONSEQUENTIAL DAMAGES.

Some states do not allow a limitation on how long an implied warranty lasts or an exclusion or limitation of incidental or consequential damages, so the above limitation on implied warranties, or exclusion or limitation on damages may not apply to you.

This warranty gives you specific legal rights, and you may also have other rights that vary from state to state. For information about this warranty write:

INTERNATIONAL

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

099573-01 REV. F 5/94

Desa A Owner's Operation And Installation Manual

Specifications and Main Features

Frequently Asked Questions

User Manual