Desa CGN10TL, CGN10T User Manual

Page 1

VENT-FREE

NATURAL GAS HEATER

OWNER’S OPERATION AND INSTALLATION MANUAL

Model: CGN10T and CGN10TL

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.

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. (I.E. Installation of this product is permitted after the manufactured (mobile) home is sited)

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.

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 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 Ven-

tilation

section in this manual.

Save this manual for future reference.

Page 2

CONTENTS

SECTION PAGE

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

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

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

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

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

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

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

Connecting To Gas Supply............................................................13

Checking Gas Connections............................................................14

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

Inspecting Burner ..........................................................................19

Cleaning And Maintenance ........................................................... 21

Troubleshooting.............................................................................21

Technical Service .......................................................................... 25

Specifications ................................................................................25

Service Hints .................................................................................25

Illustrated Parts Breakdown ..........................................................26

Parts List ........................................................................................ 27

Replacement Parts ......................................................................... 28

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

Accessory ......................................................................................28

Parts Central ..................................................................................29

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

WARNING ICON G 001

W ARNINGS

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, and carbon monoxide poisoning.

WARNING ICON G 001

DANGER

Carbon monoxide poisoning may lead to death!

Carbon Monoxide Poisoning: Early signs of carbon monoxide poisoning

resemble the flu, with headaches, dizziness, and/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 Gas: Natural gas is odorless. An odor-making agent is added to natural gas. The odor helps you detect a natural gas leak. However, the odor added to natural gas can fade. Natural 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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Page 3

SAFETY

W ARNINGS

Continued

INFORMATION

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. 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

3. Heater shall not be installed in a bathroom.

4. 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

5. 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 Air for Combustion and Ventilation, pages 5 through 8.

6. Keep all air openings in front and bottom of heater clear and free of debris. This will insure enough air for proper combustion.

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

8. Do not run heater

• where flammable liquids or vapors are used or stored

• under dusty conditions

9. Never place any objects on the heater.

10.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 shutdown. Allow surface to cool before touching.

11.Carefully supervise young children when they are in same room with heater.

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

13. 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.

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

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

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Page 4

PRODUCT

IDENTIFICATION

Ignitor Button

Control Knob

Grill Guard

Glass Panel

LOCAL CODES

UNPACKING

Front Panel

Figure 1 - Vent-Free Natural Gas Heater

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 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.

Heater Cabinet

PRODUCT

FEATURES

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

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

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Page 5

AIR FOR

WARNING

COMBUSTION

AND

VENTILATION

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.

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 m2)

or less with openings gasketed or sealed

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

and

c. caulking or sealants are applied to areas such as joints around window

and door frames, between sole plates and floors, between wall-ceiling joints, between wall panels, at penetrations for plumbing, electrical, and gas lines, and at other openings.

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

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

Ventilation Air From Outdoors

and

, page 8

(6x10

-11

per pa-sec-

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Confined and Unconfined Spaces

The National Fuel Gas Code defines a confined space as a space whose volume is less than 50 cubic feet per 1000 Btu per hour (4.8 cubic meters 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 1000 Btu per hour (4.8 cubic meters 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.

Continued

Page 6

AIR FOR

COMBUSTION

AND

VENTILATION

Continued

DETERMINING 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:

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 18 ft. (length) x 16 ft. (width) x 8 ft. (ceiling height) =

2304 cu. ft. (volume of space)

2304 cu. ft. (volume of space) ÷ 50 cu. ft. = 46.1 or 46,100 (maximum Btu/Hr the

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 + 10,000 Btu/Hr Total = 50,000 Btu/Hr

46,100 Btu/Hr (maximum the space can support) 50,000 Btu/Hr (actual amount of Btu/Hr used)

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Page 7

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

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

cable local codes.

or appli-

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

W ARNING

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

The combined spaces must have enough fresh air to supply all

Ventilation

Grills

into Adjoining

Room,

Option 1

12"

Ventilation Grills

Into Adjoining Room,

Option 2

Remove Door into Adjoining

Room,

Option 3

12"

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Figure 2 - Ventilation Air from Inside Building

Continued

Page 8

AIR FOR

COMBUSTION

AND

VENTILATION

Continued

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:

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 attic if attic has

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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Page 9

INSTALLING TO

NOTICE

WALL

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

CHECK GAS TYPE

Use only natural gas. If your gas supply is not natural, 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:

• piping (check local codes)

• sealant (resistant to propane/LP gas)

• manual shutoff valve *

• ground joint union

* 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 Accessory, page 28.

• test gauge connection * (see Figure 12, page 14)

• sediment trap

• tee joint

• pipe wrench

LOCATING HEATER

This heater is designed to be mounted on a wall.

W ARNING

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

W ARNING

Never install the heater

• in a 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

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:

stalling 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.

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

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

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Continued

Page 10

INSTALLING TO

36"

FLOOR

CEILING

Minimum

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

6" Minimum From Sides Of Heater

Right Side

Left Side

WALL

Continued

For convenience and efficiency, install heater

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

• in coldest part of room

Figure 4 - Mounting Clearances As Viewed From Front of Heater

THERMOSTAT SENSING BULB

The thermostat sensing bulb is located inside the heater. Do not move this bulb during installation or operation of the heater.

INSTALLING HEATER TO WALL

Marking Screw Locations

1. Determine where you will locate heater.

Maintain minimum clearances shown in Figure 5. If you can, provide greater clearances from floor and joining wall.

2. Mark two mounting screw locations on wall (see Figure 5).

Minimum To

Maintain 6"

Clearance

From Wall

JOINING WALL

W ARNING

WARNING ICON G 001

8 7/8"

7 3/4"

Mounting

Screw

Locations

20 1/4"

Minimum To

Maintain 3"

Clearance

From Floor

FLOOR

Figure 5 - Mounting Screw Locations

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Page 11

ANCHOR

INSTALLING TO

WALL

Installing Two Mounting Screws

Note:

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

package is provided with heater.

Continued

Attaching to wall stud method

For attaching mounting screw to wall stud

1. Drill hole at marked location using 9/64" drill bit.

2. Insert mounting screw into wall stud.

3. Tighten screw until 1/16" space (thickness of penny) is between screwhead and wall.

Attaching to wall anchor method

Follow instructions below to attach mounting screws 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 1/4" deep.

2. Fold wall anchor (see Figure 6).

Figure 6 - Folding Anchor

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

4. For thin walls (1/2" or less), insert red key into wall anchor. Push red key to “pop” open anchor wings (see Figure 7).

IMPORTANT:

Do not hammer key!

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

Thin Walls (1/4" to 1/2" thick)

Figure 7 - Popping Open Anchor Wings For Thin Walls

5. Tighten two screws until 1/16" space (thickness of penny) is between screwheads and wall (see Figure 8).

Thin or Thick Wall (thick wall shown)

1/16" Space

Solid Wall

Figure 8 - Tightening Anchors

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Continued

Page 12

INSTALLING TO

WALL

Continued

Placing Heater On Mounting Screws

1. Locate two keyhole slots on back panel of heater (see Figure 9).

2. Place large openings of slots over screwheads. Slide heater down until screws are in small portion of slots.

Keyhole Slots

Figure 9 - Location Of Keyhole Slots On Back Panel Of Heater

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.

Figure 10 - Removing Front Panel Of Heater

Installing Bottom Mounting Screw

1. Locate bottom mounting hole. This hole is near bottom on back panel of heater (see Figure 11).

2. Mark screw location on wall.

3. Remove heater from wall.

4. If installing bottom mounting screw into hollow or solid wall, install wall anchor. Follow steps 1 through 5 under Attaching To Wall Anchor Method, page 11. If installing bottom mounting screw into wall stud, drill hole at marked location using 9/64" drill bit.

5. Replace heater on wall.

6. Insert bottom anchor screw through back panel into bottom anchor or drilled hole (see Figure 11).

7. Tighten screw 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 13-15).

Figure 11 - Installing Bottom Mounting Screw

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Page 13

CONNECTING

TO GAS

SUPPLY

NOTICE

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

W ARNING

WARNING ICON G 001

Never connect heater to private (non-utility) gas wells. This gas is commonly known as wellhead gas.

IMPORTANT

pressure must be no greater than 14 inches of water. If gas line pressure is higher, heater regulator damage could occur.

Use only new, black iron or steel pipe. Internally-tinned copper tubing may be used in certain areas. Check your local codes. Use pipe 3/8" diameter or greater to allow proper gas volume to heater. If pipe is too small, undue loss of pressure will occur.

Installation must include a manual shutoff valve, ground joint 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 12, page 14).

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.

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

: Check gas line pressure before connecting heater to gas line. Gas line

CAUTION

WARNING ICON G 001

CAUTION

WARNING ICON G 001

103574

Install sediment trap (trap) in supply line as shown in Figure 12, page 14. 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.

Continued

Page 14

CONNECTING

TO GAS

SUPPLY

Continued

IMPORTANT:

and/or fittings.

Ground Joint Union

From

External Gas Meter (4" W.C. to

10.5" W.C.

Pressure)

Hold pressure regulator with wrench when connecting it to gas piping

Pressure Regulator

3/8" NPT Pipe Nipple

Heater Cabinet

Manual Shutoff Valve *

3" Minimum

Tee Joint Reducer

Bushing to 1/8" NPT

1/8" NPT Plug Tap

Tee Joint

Pipe Nipple

Test

Gauge

Connection *

Sediment Trap

CHECKING

GAS

CONNECTIONS

Cap

Figure 12 - Gas Connection

* 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 Accessory, page 28.

W ARNING

WARNING ICON G 001

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

W ARNING

WARNING ICON G 001

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.

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

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

3. Pressurize supply piping system by either using compressed air or opening main gas valve located on or near gas meter.

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Page 15

CONNECTING

TO GAS

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.

SUPPLY

Continued

Test Pressures Equal To or Less Than 1/2 PSIG

1. Close manual shutoff valve (see Figure 13).

2. Pressurize supply piping system by either using compressed air or opening main gas valve located on or near gas meter.

3. Check all joints from gas meter to manual shutoff valve (see Figure 14). 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 13).

2. Open main gas valve located on or near gas meter.

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

4. Check all joints from manual shutoff valve to control valve (see Figure 14). 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 16 through 18). Check the rest of the internal joints for leaks.

7. Turn off heater (see To Turn Off Gas To Appliance, page 18).

8. Replace front panel.

Open

POSITION

Manual Shutoff Valve

Figure 13 - Manual Shutoff Valve

Gas Meter

Figure 14 - Checking Gas Joints

OFF

POSITION

Closed

Control Valve Location

Manual Shutoff Valve

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Page 16

OPERATING

HEATER

FOR YOUR SAFETY READ BEFORE LIGHTING

W ARNING

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

Control Knob

to the OFF position.

Clockwise

PILOT

OFF

Figure 15 - Control Knob In The OFF Position

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Page 17

OPERATING

HEATER

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 16. If you don’t smell gas, go to the next step.

Continued

5. Turn control knob counterclockwise

C-clockwise

to the PILOT position. Press

in control knob for five (5) seconds (see Figure 15, page 16).

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.

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 21 through

24. 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 18.

Ignitor Electrode

Thermocouple

Pilot Burner

103574

Figure 16 - Pilot

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

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

Note:

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

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

8. Turn control knob counterclockwise

C-clockwise

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

CAUTION

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

Continued

Page 18

OPERA TING

TO TURN OFF GAS TO APPLIANCE

HEA TER

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

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 10, page 12).

2. Follow steps 1 through 5 under Lighting Instructions, pages 16 and 17.

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.

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Page 19

INSPECTING

BURNER

Check pilot flame pattern and burner flame pattern often.

PILOT FLAME PATTERN

Figure 17 shows a correct pilot flame pattern. Figure 18 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.

Pilot Burner

Thermocouple

GRH/OV 009GOOD PILOT

Figure 17 - Correct Pilot Flame Pattern

Pilot Burner

Thermocouple

Figure 18 - Incorrect Pilot Flame Pattern

If pilot flame pattern is incorrect, as shown in Figure 18

• turn heater off (see To Turn Off Gas to Appliance, above)

• see Troubleshooting, pages 21 through 24

GRH/OV 008BAD PILOT/LP

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Page 20

INSPECTING

BURNER

Continued

BURNER FLAME PATTERN

Figure 19 shows a correct burner flame pattern. Figure 20 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.

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.

W ARNING

NOTICE

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

1/2 GLASS HEIGHT

CORRECT FLAME PATTERN

AT HIGH POSITION

Figure 19 - Correct Burner Flame Pattern

INCORRECT FLAME PATTERN

AT HIGH POSITION

Figure 20 - Incorrect Burner Flame Pattern

If burner flame pattern is incorrect, as shown in Figure 20

• turn heater off (see To Turn Off Gas to Appliance, page 18)

• see Troubleshooting, pages 21 through 24

Yellow Tipping

1/2 GLASS HEIGHT

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Page 21

CLEANING

AND

MAINTENANCE

Turn off heater and let cool before cleaning.

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 ORIFICE

• 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.

W ARNING

CAUTION

TROUBLE-

SHOOTING

Note:

All troubleshooting

items are listed in order of

operation.

WARNING

Turn off 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 cable pinched or wet

2. Ignitor electrode not connected to ignitor cable

3. Piezo ignitor nut is loose

4. Broken ignitor cable

5. Ignitor electrode broken

6. Bad piezo ignitor

7. Ignitor electrode positioned wrong

REMEDY

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

2. Reconnect ignitor cable

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

4. Replace ignitor cable

5. Replace ignitor

6. Replace piezo ignitor

7. Replace ignitor

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Page 22

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. ODS/pilot is clogged

6. 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. Clean ODS/pilot (see

Cleaning and Maintenance, page 21) or

replace ODS/pilot assembly

6. 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

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 shut-off valve

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

6. A) Contact local natural gas company

B) Clean ODS/pilot (see Cleaning and Maintenance, page 21) or replace ODS/pilot assembly

7. Replace thermocouple

8. Replace control valve

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Page 23

TROUBLE-

SHOOTING

Continued

OBSERVED PROBLEM

Burner does not light after ODS/pilot is lit

POSSIBLE CAUSE

1. Burner orifice is clogged

2. Burner orifice diameter is too small

3. Inlet gas pressure is too low

REMEDY

1. Clean burner orifice (see

Cleaning and Maintenance, page 21) or

replace burner orifice

2. Replace burner orifice

3. Contact local natural gas company

Delayed ignition of burner

Burner backfiring during combustion

Yellow flame during burner combustion

1. Manifold pressure is too low

2. Burner orifice is clogged

1. Burner orifice is clogged or damaged

2. Inlet gas pressure is too low

3. Burner damaged

4. Gas regulator defective

1. Not enough air

2. Inlet gas pressure is too low

3. Gas regulator defective

1. Contact local natural gas company

2. Clean burner orifice (see

Cleaning and Maintenance, page 21) or

replace burner orifice

1. Clean burner orifice (see

Cleaning and Maintenance, page 21) or

replace burner orifice

2. Contact local natural gas company

3. Replace burner

4. Replace gas regulator

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

Cleaning and Maintenance, page 21)

2. Contact local natural gas company

3. Replace gas regulator

103574

Slight smoke or odor during initial operation

Heater produces a whistling noise when burner is lit

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. 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 checked by local natural gas company

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

4. Clean burner (see

Cleaning and Maintenance, page 21) or

replace burner orifice

Continued

Page 24

TROUBLE-

SHOOTING

Continued

W ARNING

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

1. Open window and/or door for ventilation

2. Contact local natural gas company

3. Clean ODS/pilot (see

Cleaning and Maintenance, page 21)

Gas odor even when control knob is in OFF position

Gas odor during combustion

Moisture/condensation noticed on windows

1. Gas leak. See Warn-

ing 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. Not enough combustion/ventilation air

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

2. Replace control valve

1. Take apart gas tubing and remove foreign matter

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

1. Refer to Air for Com-

bustion and Ventilation requirements

(page 5)

103574

Page 25

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

CGN10T and CGN10TL

Btu (Variable) 5,000/10,000 Type Gas Natural Only Ignition Piezo Pressure Regulator Setting 3" W.C. Inlet Gas Pressure (inches of water)

Maximum 10.5" Minimum 4"

Dimensions, Inches (H x W x D)

Heater (Including knobs and grill) 21 1/2 x 13 1/2 x 7 Carton 25 1/4 x 16 3/4 x 7 1/2

Weight (pounds)

Shipping 19

When gas pressure is too low

• pilot will not stay lit

• burner will have delayed ignition

• heater will not produce specified heat

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 natural gas supplier.

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Page 26

ILLUSTRATED PARTS BREAKDOWN

CGN10T

CGN10TL

12-1

12-2

ODS/PILOT

103574

Page 27

PARTS LIST

CGN10T

CGN10TL

This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Replacement Parts on page 28 of this manual.

KEY PART NO. NUMBER DESCRIPTION QTY.

1 098304-01 Screw, #10 x 3/8" 2 2 099467-02 Front Panel Assembly,

Earthtone (CGN10T) 1

099467-05 Front Panel Assembly,

Ivory (CGN10TL) 1 3 099318-04 Grill Guard 1 4 101108-01 Grill Guard Clip 2 5 102018-01AA Bottom Glass Retainer 1 6 098260-03 Glass Panel 1 7 098532-03AA Top Glass Retainer 1 8 M11084-38 Screw, #8 x 3/8" 8 9 098352-03BR Deflector Unit 1 10 098271-03 Ignitor Cable 1 11 098249-01 Nut, M5 2 12 100701-03 ODS/Pilot Assembly 1 12-1 098514-01 Thermocouple 1 12-2 098594-01 Ignitor Electrode 1 13 099386-02 Burner 1 14 099387-11 Pilot Tubing 1 15 098251-03 Injector 1 16 099463-01 Injector Holder 1 17 099415-01 Pressure Regulator 1 18 102863-01 Burner Tubing 1 19 102864-01 Regulator Tubing 1 20 102492-01 5/16" Male Connector 1 21 102493-01 1/4" Male Connector 1 22 098522-07 Thermostat Gas Valve 1 23 102571-01 Cabinet Assembly, Brown (CGN10T) 1

102571-03 Cabinet Assembly, Ivory (CGN10TL) 1 24 102445-01 Piezo Ignitor 1 25 098275-01 3/8" NPT Male Plug 2 26 099553-01 Pilot Shield 1 27 098303-02 Screw, #6 x 5/16" 2

103574

PARTS AVAILABLE - NOT SHOWN

102471-01 Control Position Label 1

100642-02 Assembly, Hardware 1

Page 28

REPLACEMENT

PARTS

Note:

Use only original replacement parts. This will protect your warranty coverage

for parts replaced under warranty.

Parts Under Warranty

Contact authorized dealer from whom you purchased this product. If they cannot supply original replacement part(s), call DESA International’s Technical Service Department at 1-800-323-5190 for referral information.

When contacting your dealer or 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

Contact authorized dealers of this product. If they cannot supply original replacement part(s), either contact your nearest Parts Central (see page 29) or call DESA International’s Parts Department at 1-800-972-7879 for referral information.

When calling DESA International, have ready:

• model number of your heater

• the replacement part number

SERVICE

PUBLICATIONS

ACCESSORY

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.

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

MANUAL SHUTOFF VALVE - GA5010

Manual shutoff valve with 1/8" NPT tap.

103574

Page 29

PARTS

CENTRAL

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

Baltimore Electric

1348 Dixwell Avenue Hamden, CT 06514 1-800-397-7553 203-248-7553 Parts Department

Portable Heater Parts

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

FBD

1349 Adams St. Bowling Green, KY 42103 502-846-1199 1-800-654-8534

Four Flags Power Products

1115 Stateline Road Niles, MI 49120 616-684-2697 Parts Only

Master Parts Distributor

1184 Wilson Ave. NW Grand Rapids , MI 49504 616-791-0505 1-800-446-1446 Fax: 1-616-791-8270 Parts Department

Washer Equipment Co.

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

East Coast Energy Products

707 Broadway W. Long Branch, NJ 07764 908-870-8809 1-800-755-8809 Parts Department

Tarantin Tank Co.

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

Albany Ladder

1586-90 Central Avenue Albany, NY 07728 NY, MA, VT 518-869-5335 1-800-354-7368 (NY, MA, VT) Parts Department

Dayton Hardware

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

Halco Enterprises

208 Carter Drive, Unit 21 West Chester, PA 19382 610-430-7717 1-800-368-0803 Parts Department

LaPorte’s Parts and Service

2444 North 5th Street Hartsville, SC 29550 803-332-0191 Parts Department

Cans Unlimited, Inc.

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

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Page 30

NOTES

_________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________ _________________________________________________________________

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Page 31

NOTES

103574

Page 32

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

COMFORT GLOW VENT-FREE RESIDENTIAL GAS HEATERS

DESA International warrants this product to be free from defects in materials and components for two (2) years from the date of first purchase, provided that the product has been properly installed, operated and maintained in accordance with all applicable instructions. To make a claim under this warranty the Bill of Sale or cancelled check must be presented.

This warranty is extended only to the original retail purchaser. This warranty covers the cost of part(s) required to restore this heater to proper operating condition and an allowance for labor when provided by a DESA Authorized Service Center. Warranty part(s) MUST be obtained through authorized dealers of this product and/or DESA 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 COMPONENTS 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:

TWO (2) YEARS ON ALL

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

103574-01 REV. A 3/97

Desa CGN10TL, CGN10T User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual