Desa Tech CGN20T Electric Heater User Manual

BLUE FLAME VENT-FREE NATURAL GAS HEATER
OWNER’S OPERATION AND INSTALLATION MANUAL
CGN20T
CGN20TL
CGN30T
CGN30TL
®
Heater Sizes: 20,000 Btu/Hr Thermostat and
30,000 Btu/Hr Thermostat 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.
WARNING: This is an
unvented gas-fired heater.
It uses air (oxygen) from
the room in which it is
installed. Provisions for
adequate combustion
must be provided. Refer to
page 5 of this manual
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
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.
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 ......................................................................................... 17
Inspecting Burner ........................................................................................ 20
Cleaning And Maintenance ......................................................................... 22
Troubleshooting ........................................................................................... 22
Technical Service ........................................................................................ 26
Specifications .............................................................................................. 26
Service Hints ............................................................................................... 26
Service Publications .................................................................................... 26
Replacement Parts ....................................................................................... 27
Parts Centrals ............................................................................................... 27
Illustrated Parts List ..................................................................................... 28-29
Accessories .................................................................................................. 30
Warranty Information .................................................................................. Back Cover
SAFETY
INFORMATION
WARNING ICON
G 001
WARNINGS
IMPORTANT: Read this owner’s manual carefully and completely before trying to assemble, operate, or service this heater. Improper use of
this heater can cause serious injury or death from burns, fire, explosion,
electrical shock, and carbon monoxide poisoning.
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, 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
2
103873
SAFETY
INFORMATION
Continued
WARNING ICON
G 001
WARNINGS Continued
WARNING: Any change to this heater or its controls can be dangerous.
1. This appliance is only for use with the type of gas indicated on the rating plate.
This appliance is not convertible for use with other gases.
2. 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. This heater shall not be installed in a bedroom or 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 Fresh Air for Combustion and Ventilation, pages 5 through 8.
6. Keep air openings in front and bottom of heater clear and free of debris. This will
ensure 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 shut-down. Allow surface to cool before touching.
11. Carefully supervise young children when they are in the 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 and unplug 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.
3
103873
Ignitor Button
Control Knob
PRODUCT
IDENTIFICATION
Grill
Guard
Glass
Panel
Front
Panel
Heater
Cabinet
Figure 1 - Vent-Free Natural Gas Heater (30,000 Btu/Hr Model Shown)
LOCAL CODES
Install and use heater with care. Follow all local codes. In the absence of local codes, use
the latest edition of the National Fuel Gas Code ANSI Z223, also known as NFPA 54*.
*Available from:
American National Standards Institute, Inc.
1430 Broadway
New York, NY 10018
National Fire Protection Association, Inc.
Batterymarch Park
Quincy, MA 02269
UNPACKING
PRODUCT
FEATURES
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 have a thermostat sensing bulb and a control valve. This results in
the greatest heater comfort. This can also result in lower gas bills.
4
103873
FRESH AIR
FOR
COMBUSTION
AND
VENTILATION
WARNING ICON
G 001
WARNING
This heater shall not be installed in a confined space unless provisions are provided for adequate combustion and ventilation air.
Read the following instructions to insure proper fresh air for this
and other fuel-burning appliances in your home.
Today’s homes are built more energy efficient than ever. New materials, increased
insulation, and new construction methods help reduce heat loss in homes. Home
owners weather strip and caulk around windows and doors to keep the cold air out
and the warm air in. During heating months, home owners want their homes as
airtight as possible.
While it is good to make your home energy efficient, your home needs to breathe.
Fresh air must enter your home. All fuel-burning appliances need fresh air for proper
combustion and ventilation.
Exhaust fans, fireplaces, clothes dryers, and fuel burning appliances draw air from
the house to operate. You must provide adequate fresh air for these appliances. This
will insure proper venting of vented fuel-burning appliances.
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 7 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 continuous water vapor retarder with a rating of one perm (6x10-11 per pa-secm2) or less with openings gasketed or sealed and
b. weather stripping has been added on openable windows and doors and
c. caulking or sealants are applied to areas such as joints around window and
door frames, between sole plates and floors, between wall-ceiling joints,
between wall panels, at penetrations for plumbing, electrical, and gas lines,
and at other openings.
If your home meets all of the three criteria above, you must provide additional
fresh air. See Ventilation Air From Outdoors, page 8.
If your home does not meet all of the three criteria above, proceed to page 6.
Confined and Unconfined Space
The National Fuel Gas Code (ANSIZ2123.1, 1992 Section 5.3) defines a confined
space as a space whose volume is less than 50 cubic feet** per 1,000 Btu per hour
(4.8 m3 per kw) of the aggregate input rating of all appliances installed in that
space and an unconfined space as a space whose volume is not less than 50 cubic
feet per 1,000 Btu per hour (4.8 m3 per kw) of the aggregate input rating of all
appliances installed in that space. Rooms communicating directly with the space in
which the appliances are installed*, through openings not furnished with doors, are
considered a part of the unconfined space.
* Adjoining rooms are communicating only if there are doorless passageways or
ventilation grills between them.
** Cubic feet equals length x width x height of room.
Continued
103873
5
FRESH AIR
FOR
COMBUSTION
AND
VENTILATION
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: Space size 20 ft. (length) x 16 ft. (width) x 8 ft. (ceiling height) =
2560 cu. ft. (volume of space)
If additional ventilation to adjoining room is supplied with grills or openings, add
the volume of these rooms to the total volume of the space.
2. Divide the space volume by 50 cubic feet to determine the maximum Btu/Hr the
space can support.
___________ (volume of space) ÷ 50 cu. ft. = (Maximum Btu/Hr the space can
support)
Example: 2560 cu. ft. (volume of space) ÷ 50 cu. ft. = 51.2 or 51,200 (maximum
Btu/Hr the space can support)
3. Add the Btu/Hr of all fuel burning appliances in the space.
Vent-free heater
_________________ Btu/Hr
Gas water heater*
_________________ Btu/Hr
Gas furnace
_________________ Btu/Hr
Vented gas heater
_________________ Btu/Hr
Gas fireplace logs
_________________ Btu/Hr
Other gas appliances* + _________________ Btu/Hr
Total
= _________________ Btu/Hr
Gas water heater
40,000
Btu/Hr
Vent-free heater
+
20,000
Btu/Hr
Total
=
60,000
Btu/Hr
* Do not include direct-vent gas appliances. Direct-vent draws combustion air
from the outdoors and vents to the outdoors.
Example:
4. Compare the maximum Btu/Hr the space can support with the actual amount of
Btu/Hr used.
_______________ Btu/Hr (maximum the space can support)
_______________ Btu/Hr (actual amount of Btu/Hr used)
Example:
51,200
60,000
Btu/Hr (maximum the space can support)
Btu/Hr (actual amount of Btu/Hr used)
The space in the above example is a confined space because the actual Btu/Hr used is
more than the maximum Btu/Hr the space can support. You must provide additional
fresh air. Your options are as follows:
A. Rework worksheet, adding the space of an adjoining room. If the extra space
provides an unconfined space, remove door to adjoining room or add ventilation
grills between rooms. See Ventilation Air From Inside Building, page 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.
6
103873
FRESH AIR
FOR
COMBUSTION
AND
VENTILATION
Continued
WARNING ICON
G 001
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 or applicable local codes.
VENTILATION AIR
Ventilation Air From Inside Building
This fresh air would come from an adjoining unconfined space. When ventilating to
an adjoining unconfined space, you must provide two permanent openings: one
within 12" of the ceiling and one within 12" of the floor on the wall connecting the
two spaces (see options 1 and 2, Figure 2). You can also remove door into adjoining
room (see option 3, Figure 2). Follow the National Fuel Gas Code NFPA 54/ANSI
Z223.1, Section 5.3, Air for Combustion and Ventilation for required size of ventilation grills or ducts.
WARNING ICON
G 001
WARNING
Rework worksheet, adding the space of the adjoining unconfined
space. The combined spaces must have enough fresh air to supply all
appliances in both spaces.
12"
Ventilation
Grills
into Adjoining
Room,
Option 1
Ventilation Grills
Into Adjoining Room,
Option 2
Or
Remove
Door into
Adjoining
Room,
Option 3
12"
Figure 2 - Ventilation Air from Inside Building
Continued
103873
7
FRESH 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.
IMPORTANT: Do not provide openings for inlet or outlet air into attic if attic has a
thermostat-controlled power vent. Heated air entering the attic will activate the
power vent.
Outlet
Air
Ventilated
Attic
Outlet
Air
To Attic
To
Crawl
Space
Inlet
Air
Inlet Air
Ventilated
Crawl Space
Figure 3 - Ventilation Air from Outdoors
8
103873
INSTALLING TO
WALL
NOTICE
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 gas, 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
• test gauge connection * (see
Figure 12, page 15)
• sediment trap
• tee joint
• pipe wrench
* 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.
LOCATING HEATER
This heater is designed to be mounted on a wall.
WARNING ICON
G 001
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 ICON
G 001
WARNING
Never install the heater
• in a bedroom or 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
WARNING ICON
G 001
CAUTION
This heater creates warm air currents. These currents move heat to
wall surfaces next to heater. Installing heater next to vinyl or cloth
wall coverings or operating heater where impurities in the air (such
as tobacco smoke) exist, may discolor walls.
IMPORTANT: Vent-free heaters add moisture to the air. Although this is beneficial,
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.
Continued
103873
9
INSTALLING TO
WALL
Continued
WARNING ICON
G 001
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.
CEILING
36"
Minimum
6"
Minimum
From
Sides Of
Heater
Left
Side
Right
Side
FLOOR
3" Minimum To Top Surface
Of Carpeting, Tile Or Other
Combustible Material
Figure 4 - Mounting Clearances As Viewed From Front of Heater
THERMOSTAT SENSING BULB
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: Attach thermostat sensing bulb to back of heater for proper operation.
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.
Thermostat
Sensing Bulb
Clamp
10
Figure 5 - Attaching Thermostat Sensing Bulb
103873
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 downward.
4. Remove cardboard packing from grill and glass.
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 11
103873
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.
7 1/4"
Min.
16"
Only Insert Mounting
Screws Through Last
Hole On Each End
18 3/4"
Min.
Adjoining Wall
Adjoining Wall
11"
Min.
16"
Only Insert Mounting
Screws Through Last
Hole On Each End
Floor
18 3/4"
Min.
Floor
30,000 Btu/Hr Model
20,000 Btu/Hr Models
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.
Figure 9 - Folding Anchor
12
3. Insert wall anchor (wings first) into hole. Tap anchor flush to wall.
103873
INSTALLING TO
WALL
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.
Continued
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). Make gas connections and
check for leaks before replacing front panel (see pages 14-16).
Figure 12 - Installing Bottom Mounting Screws
103873
13
CONNECTING
TO GAS
SUPPLY
NOTICE
A qualified service person must connect heater to gas supply. Follow all local codes.
WARNING ICON
G 001
WARNING
Never connect heater to private (non-utility) gas wells. This gas is
commonly known as well-head gas.
IMPORTANT: Check gas line pressure before connecting heater to gas line. Gas line
pressure must be no greater than 14 inches of water. If gas line pressure is higher, heater
regulator damage could occur.
WARNING ICON
G 001
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 Inlet Pipe Diameters
20,000 Btu/Hr Models
3/8" or greater
30,000 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 13, 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.
WARNING ICON
G 001
CAUTION
Use pipe joint sealant that is resistant to liquid petroleum (LP) gas.
Install sediment trap in supply line as shown in Figure 13, 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.
14
103873
CONNECTING
TO GAS
SUPPLY
IMPORTANT: Hold pressure regulator with wrench when connecting it to gas piping and/
or fittings.
Pressure
Regulator
Continued
3/8" NPT
Pipe Nipple
Ground Joint Union
Tee Joint
Test
Gauge
Connection *
Heater
Cabinet
Manual
Shutoff
Valve *
Reducer
Bushing to
1/8" NPT
Typical Inlet Pipe from
Gas Meter
(4" W.C. to
10.5" W.C. Pressure)
1/8" NPT
Plug Tap
Tee Joint
Sediment
Trap
Pipe
Nipple
3" Minimum
Cap
Figure 13 - 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 Accessories, page 30.
CHECKING
GAS
CONNECTIONS
WARNING ICON
G 001
WARNING
Test all gas piping and connections for leaks after installation or
servicing. Correct all leaks at once.
WARNING ICON
G 001
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.
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.
Continued
103873
15
CHECKING
GAS
CONNECTIONS
Continued
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 14).
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 15). 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.
2.
3.
4.
5.
6.
7.
8.
Open manual shutoff valve (see Figure 14).
Open main gas valve located on or near gas meter.
Make sure control knob of heater is in the OFF position.
Check all joints from manual shutoff valve to thermostat gas valve (see Figure 15).
Apply mixture of liquid soap and water to gas joints. Bubbles forming show a
leak.
Correct all leaks at once.
Light heater (see Operating Heater, pages 17 through 19). Check the rest of the
internal joints for leaks.
Turn off heater (see To Turn Off Gas to Appliance, page 19).
Replace front panel.
ON
POSITION
Open
Manual
Shutoff
Valve
OFF
POSITION
Closed
Figure 14 - Manual Shutoff Valve
Thermostat Gas Valve
Gas Meter
Manual
Shutoff
Valve
Figure 15 - Checking Gas Joints
16
103873
OPERATING
HEATER
FOR YOUR SAFETY READ BEFORE LIGHTING
WARNING ICON
G 001
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
Clockwise
to the OFF position.
Control Knob
LO
Ignitor Button
T
PILO
IH
OFF
IGNITOR
Figure 16 - Control Knob In The OFF Position
Continued
103873
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 17. If you don’t smell gas, go to the next step.
5. Turn control knob counterclockwise
to the PILOT position. Press in
control knob for five (5) seconds (see Figure 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.
• If control knob does not pop up when released, contact a qualified
service person or gas supplier for repairs.
C-clockwise
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 22 through
25. 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
Pilot Burner
Figure 17 - Pilot
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
to desired heating level. The
main burner should light. Set control knob to any heat level between HI and
LO.
C-clockwise
WARNING ICON
G 001
CAUTION
Do not try to adjust heating levels by using the manual shutoff valve.
18
103873
OPERATING
HEATER
TO TURN OFF GAS TO APPLIANCE
Shutting Off Heater
1. Turn control knob clockwise
Clockwise
to the OFF position.
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 Clockwise to the PILOT position.
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 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.
19
103873
INSPECTING
BURNER
Check pilot flame pattern and burner flame pattern often.
PILOT FLAME PATTERN
Figure 18 shows a correct pilot flame pattern. Figure 19 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
Pilot Burner
Figure 18 - Correct Pilot Flame Pattern
Thermocouple
Pilot Burner
Figure 19 - Incorrect Pilot Flame Pattern
If pilot flame pattern is incorrect, as shown in Figure 19.
• turn heater off (see To Turn Off Gas to Appliance, page 19).
• see Troubleshooting, pages 22 through 25.
20
103873
INSPECTING
BURNER
Continued
BURNER FLAME PATTERN
Figure 20 shows a correct burner flame pattern. Figure 21 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 ICON
G 001
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.
1/2 GLASS HEIGHT
CORRECT FLAME PATTERN
AT HIGH POSITION
Figure 20 - Correct Burner Flame Pattern
Yellow
Tipping
1/2 GLASS HEIGHT
INCORRECT FLAME PATTERN
AT HIGH POSITION
Figure 21 - Incorrect Burner Flame Pattern
If burner flame pattern is incorrect, as shown in Figure 21
• turn heater off (see To Turn Off Gas to Appliance, page 19)
• see Troubleshooting, pages 22 through 25
21
103873
CLEANING
AND
MAINTENANCE
WARNING ICON
WARNING
G 001
Turn off heater and let cool before cleaning.
WARNING ICON
G 001
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.
TROUBLESHOOTING
Note: All troubleshooting items are listed in
order of operation.
WARNING ICON
G 001
WARNING
Turn off and unplug heater and let cool before servicing. Only a
qualified service person should service and repair heater.
WARNING ICON
G 001
CAUTION
Never use a wire, needle, or similar object to clean ODS/pilot. This
can damage ODS/pilot unit.
OBSERVED
PROBLEM
POSSIBLE
CAUSE
When ignitor button
is pressed, there is no
spark at ODS/pilot
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
22
103873
TROUBLESHOOTING
Continued
OBSERVED
PROBLEM
POSSIBLE
CAUSE
When ignitor button
is pressed, there is
spark at ODS/pilot
but no ignition
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
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
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 22) or
replace ODS/pilot
assembly
6. Replace gas regulator
1. Press in control knob
fully
2. After ODS/pilot lights,
keep control knob
pressed in 30 seconds
3. Wait one (1) 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 natural
gas company
B) Clean ODS/pilot (see
Cleaning and Maintenance, page 22) or
replace ODS/pilot
assembly
7. Replace thermocouple
8. Replace control valve
Continued
103873
23
TROUBLESHOOTING
Continued
OBSERVED
PROBLEM
POSSIBLE
CAUSE
Burner does not light
after ODS/pilot is lit
1. Burner orifice is
clogged
2. Burner orifice diameter
is too small
3. Inlet gas pressure is
too low
REMEDY
1. Clean burner (see Cleaning and Maintenance,
page 22) or replace burner
orifice
2. Replace burner orifice
3. Contact local natural gas
company
Delayed ignition of
burner
1. Manifold pressure is
too low
2. Burner orifice is
clogged
1. Contact local natural gas
company
2. Clean burner (see Cleaning and Maintenance,
page 22) or replace burner
orifice
Burner backfiring
during combustion
1. Burner orifice is
clogged or damaged
1. Clean burner (see Cleaning and Maintenance,
page 22) or replace burner
orifice
2. Replace burner
3. Replace gas regulator
2. Burner damaged
3. Gas regulator defective
Yellow flame during
burner combustion
2. Gas regulator defective
1. Check burner for dirt and
debris. If found, clean
burner (see Cleaning and
Maintenance, page 22)
2. Replace gas regulator
Slight smoke or odor
during initial operation
1. Residues from manufacturing processes
1. Problem will stop after a
few hours of operation
Heater produces a
whistling noise when
burner is lit
1. Turning control knob
to HI position when
burner is cold
2. Air in gas line
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
natural gas company
3. Observe minimum installation clearances (see Figure
4, page 10)
4. Clean burner (see Cleaning and Maintenance,
page 22) or replace burner
orifice
1. Not enough air
3. Air passageways on
heater blocked
4. Dirty or partially
clogged burner orifice
24
103873
TROUBLESHOOTING
Continued
WARNING ICON
G 001
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: Operating heater where impurities in air exist may create odors. 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
POSSIBLE
CAUSE
Heater produces a
clicking/ticking noise
just after burner is lit
or shut off
1. Metal expanding while
heating or contracting
while cooling
1. This is common with
most heaters. If noise is
excessive, contact qualified service person
Heater produces
unwanted odors
1. Heater burning vapors
from paint, hair spray,
glues, etc. See IMPORTANT statement
above).
2. Gas leak. See Warn-
1. Ventilate room. Stop
using odor causing
products while heater is
running
ing statement at top
of page
Heater shuts off in
use (ODS operates)
1. Not enough fresh air is
available
2. Low line pressure
3. ODS/pilot is partially
clogged
Gas odor even when
control knob is in
OFF position
1. Gas leak. See Warning statement at top
of page
2. Control valve defective
Gas odor during
combustion
1. Foreign matter between control valve
and burner
2. Gas leak. See Warning statement at top
of page
Moisture/condensation noticed on
windows
1. Not enough combustion/ventilation air.
REMEDY
2. Locate and correct all
leaks (see Checking Gas
Csonnections, page 15)
1. Open window and/or door
for ventilation
2. Contact local propane/LP
gas company
3. Clean ODS/pilot (see
Cleaning and Maintenance, page 22)
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)
1. Refer to Air for Combustion and Ventilation
requirements (page 5)
25
103873
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.
CGN20T/CGN20TL
CGN30T/CGN30TL
20,000 Btu/Hr Models 30,000 Btu/Hr Models
SPECIFICATIONS
SERVICE
HINTS
Btu (Variable)
Type Gas
10,000/20,000
Natural Only
15,000/30,000
Natural Only
Ignition
Pressure Regulator Setting
Piezo
3" W.C.
Piezo
3" W.C.
Inlet Gas Pressure (in. of water)
Maximum
10.5"
Minimum
4"
10.5"
4"
Dimensions, Inches (H x W x D)
Heater
23.5 x 18.5 x 8.0
Carton
25.8 x 21.3 x 10.1
23.5 x 25.9 x 8.0
25.8 x 28.7 x 10.1
Weight (pounds)
Heater
Shipping
30
35
22
27
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.
SERVICE
PUBLICATIONS
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.
26
103873
REPLACEMENT
PARTS
Note: Use only original replacement parts. This will protect your warranty coverage
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 for referral information.
When calling DESA International, have ready
• your name
• your address
• model number of your heater
• how heater was malfunctioning
• type of gas used (propane/LP 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 can’t supply original replacement
part(s), either contact your nearest Parts Central (see below) 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
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.
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 East
Valparaiso, IN 46383
All States
219-462-7441
1-800-362-6951
FBD
P.O. Box 1096
1720 Kummer Road
Franklin, KY 42134
502-586-1922
1-800-654-8534
Four Flags Power Products
1115 Stateline Road
Niles, MI 49120
616-684-2697
1-800-268-4983
Master Service Center
1184 Wilson NW
Walker, MI 49504
616-791-4760
1-800-446-1446
103873
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
LA Porte's Parts & Service
2444 N. 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
27
28
103873
1
3
12-2
12-1
2
5
6
7
4
9
10
12 ODS/Pilot Assembly
8
11
12
18
13
14
21
19
15
17
22
CGN20T
CGN20TL
CGN30T
CGN30TL
20
25
26
10
23
16
24
PARTS LIST
KEY
NO.
1
2
3
4
5
6
7
8
9
10
11
12
12-1
12-2
13
14
15
16
17
18
19
20
21
22
23
24
25
26
This list contains replaceable parts used in your heater. When ordering parts, follow
the instructions listed under Replacement Parts on page 27 of this manual.
PART NUMBER FOR
CGN20T/CGN20TL CGN30T/CGN30TL
20,000 Btu/Hr
30,000 Btu/Hr
098304-01
098304-01
098742-03
098742-04
098742-19
098742-20
103476-01
103476-02
101108-01
101108-01
098533-04AA
098533-05AA
098260-09
098260-10
098532-04AA
098532-05AA
M11084-26
M11084-26
098352-01CJ
098352-02CJ
098271-02
098271-02
098249-01
098249-01
099440-05
099440-05
098514-01
098514-01
098515-01
098515-01
103446-01
103447-01
098517-01
098517-01
103845-02
103845-04
099066-01
099066-01
099415-07
099415-07
099553-01
099553-01
103255-01
103255-01
103256-01
103256-01
098522-10
098522-12
098530-03
098531-04
098530-04
098531-05
097159-04
097159-04
M11084-26
M11084-26
M11084-38
M11084-38
NJF-8C
NJF-8C
DESCRIPTION
QTY.
Screw, #10 x 3/8"
2
Front Panel for CGN20T/CGN30T (Champagne)
1
Front Panel for CGN20TL/CGN30TL (Ivory)
1
Grill Guard
1
Removable Speed Clip
2
Bottom Glass Retainer
1
Glass Panel
1
Top Glass Retainer
1
Screw, #10 x 3/8"
4
Deflector Unit
1
Ignitor Cable
1
Nut, M5
2
ODS/Pilot Assembly
1
Thermocouple
1
Ignitor Electrode
1
Burner
1
3/16" Pilot Tubing
1
Injector
1
Mounting Bracket
1
Pressure Regulator
1
Pilot Shield
1
3/8" Outlet (Burner) Tubing
1
3/8" Inlet Tubing
1
Thermostat Gas Valve
1
Cabinet for CGN20T/CGN30T (Woodgrain)
1
Cabinet for CGN20TL/CGN30TL (Ivory)
1
Piezo Ignitor
1
Screw, #10 x 3/8"
2
Screw, #8 x 3/8"
2
Hex Nut
1
PARTS AVAILABLE — NOT SHOWN
098305-01
100642-01
098305-01
100642-01
Control Position Label
Hardware Assembly
1
1
29
103873
ACCESSORIES
Purchase these heater accessories from your local dealer. If they can not supply these
accessories, either contact your nearest Parts Central (see page 27) 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.
FAN KITS - GA3100A and GA3200TA
For all models. Provides better heat distribution. Makes heater more efficient.
Complete installation and operating instructions included.
Manually controlled - GA3100A. Includes
ON/OFF switch.
Thermostatically controlled - GA3200TA.
Includes three settings: ON/OFF/AUTO.
FLOOR MOUNTING STAND
20,000 Btu/Hr Models
CGN20TL - GA4500L - Ivory
CGN20T - GA4500 - Champagne
30,000 Btu/Hr Models
CGN30TL - GA4510L - Ivory
CGN30T - GA4510 - Champagne
For locating heater on the floor, away
from a wall. Complete installation
instructions included.
MANUAL SHUTOFF
VALVE - GA5010
For all models. Manual shutoff valve
with 1/8" NPT tap.
30
103873
NOTES
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___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
103873
31
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 NATURAL 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 TWO (2)
YEARS 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:
2701 Industrial Drive
P.O. Box 90004
Bowling Green, KY 42102-9004
103873-01
REV. A
02/97