Comfort Glow S39PT, S39NT Owner's Operation And Installation Manual

Page 1

Save this manual for future reference.

For more information, visit www.desatech.com

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 quali-

ﬁed installer, service agency or the gas supplier.

S39PT AND S39NT

20,000 TO 39,000 BTU/HR THERMOSTATICALLY- CONTROLLED

VENT-FREE FREESTANDING PEDESTAL STOVE SYSTEM

OWNER’S OPERATION AND INSTALLATION MANUAL

Page 2

www.desatech.com

111417-01B

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 Ventilation section on page 5 of this manual.

This appliance may be installed in an aftermarket,* permanently located, manufactured (mobile) home, where not prohibited by local codes.

This appliance is only for use with the type of gas indicated on the rating plate. This appliance is not convertible for use with other gases.

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

State of Massachusetts: The installation must be made by a licensed plumber or gas ﬁtter in the Commonwealth of Massachusetts.

Sellers of unvented propane or natural gas-ﬁred supplemental room heaters shall provide to each purchaser a copy of 527 CMR 30 upon sale of the unit.

Vent-free gas products are prohibited for bedroom and bathroom installation in the Common

wealth of Massachusetts.

TABLE OF CONTENTS

Safety Information ............................................... 3

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

Local Codes ........................................................ 5

Unpacking ........................................................... 5

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

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

Installation ........................................................... 8

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

Inspecting Burners ........................................... 18

Cleaning and Maintenance ................................ 19

Speciﬁcations ....................................................

Service Hints ..................................................... 20

Technical Service .............................................. 20

Replacement Parts ............................................ 20

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

Parts Centrals .................................................... 25

Illustrated Parts Breakdown and Parts List ....... 26

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

Warranty Information ...........................

Back Cover

Page 3

www.desatech.com

111417-01B 3

SAFETY INFORMATION

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

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

DANGER: Carbon monoxide poisoning may lead to death!

Carbon Monoxide Poisoning: Early signs of carbon

monoxide poisoning resemble the ﬂu, with head

aches, dizziness or nausea. If you have these signs, the heater may not be working properly. Get fresh air at once! Have heater serviced. Some people are more affected by carbon monoxide than others. These include pregnant women, people with heart or lung disease or anemia, those under the inﬂuence of alcohol and those at high altitudes.

Natural and Propane/LP Gas: Natural and pro-

pane/LP gases are odorless. An odor-making agent is added to these gases. The odor helps you detect a gas leak. However, the odor added to the gas can fade. Gas may be present even though no odor exists.

Make certain you read and understand all warn

ings. Keep this manual for reference. It is your guide to safe and proper operation of this heater.

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

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

WARNING: Do not allow fans to blow directly into the heater. Avoid any drafts that alter burner ﬂame patterns. Ceiling fans can create drafts that alter burner ﬂame patterns. Altered burner patterns can cause sooting.

Due to high temperatures, the appliance should be located out of trafﬁc and away from furniture and draperies.

Do not place clothing or other ﬂammable material on or near the appliance. Never place any objects on the stove.

Heater becomes very hot when running stove. Keep children and adults away from hot surface to avoid burns or clothing ignition. Stove will remain hot for a time after shutdown. Al

low surfaces to cool before touching.

Carefully supervise young chil

dren when they are in the room with stove.

You must operate this heater with a heater screen in place. Make sure heater screen is in place before running heater.

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

Page 4

www.desatech.com

111417-01B

1. This appliance is only for use with the type of gas indicated on the rating plate. This ap

pliance is not convertible for use with other gases.

2. Do not place propane/LP supply tank(s) in

side any structure. Locate propane/LP supply tank(s) outdoors (propane/LP only).

3. If you smell gas

• shut off gas supply

• do not try to light any appliance

• do not touch any electrical switch; do not

use any phone in your building

• immediately call your gas supplier from

a neighborʼs phone. Follow the gas supplierʼs instructions

• if you cannot reach your gas supplier, call

the ﬁre department

4. This heater shall not be installed in a bedroom or bathroom.

5. Do not use this heater as a wood-burning heater. Use only the logs provided with the heater.

6. Do not add extra logs or ornaments such as pine cones, vermiculite or rock wool. Using these added items can cause sooting. Do not add lava rock around base. Rock and debris could fall into the control area of heater. After servicing, always replace screen before operating heater.

7. You must operate this heater with the heater screen in place. Make sure heater screen is in place before running heater.

8. To prevent the creation of soot, follow the instructions in Cleaning and Maintenance, page 19.

9. Before using furniture polish, wax, carpet cleaner or similar products, turn heater off. If heated, the vapors from these products may create a white powder residue within burner box or on adjacent walls or furniture.

10. This heater needs fresh air ventilation to run properly. This heater has an Oxygen Depletion Sensing (ODS) safety shutoff system. The ODS shuts down the heater if not enough fresh air is available. See Air for Combustion and Ventilation, page 5. If heater keeps shutting off, see Troubleshooting,

page 21.

SAFETY INFORMATION

Continued

11. Do not run heater

• where ﬂammable liquids or vapors are used or stored.

• under dusty conditions.

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

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

16. Do not operate heater if any log is broken. Do not operate heater if a log is chipped (dimesized or larger).

17. To prevent performance problems, do not use propane/LP fuel tank of less than 100 lbs. capacity (propane/LP only).

18. Provide adequate clearances around air openings.

PRODUCT

IDENTIFICATION

Figure 1 - Vent-Free Gas Pedestal Stove

Heater Controls (Inside Door)

Screen

Logs

Stove Cabinet

Page 5

www.desatech.com

111417-01B 5

LOCAL CODES

Install and use heater with care. Follow all local codes. In the absence of local codes, use the lat

est edition of The National Fuel Gas Code ANSI

Z223.1/NFPA 54

*Available from:

American National Standards Institute, Inc.

1430 Broadway

New York, NY 10018

National Fire Protection Association, Inc.

Batterymarch Park

Quincy, MA 02269

This heater is designed for vent-free operation. State and local codes in some areas prohibit the use of vent-free heaters.

UNPACKING

1. Remove top inner pack.

2. Tilt carton so that stove is upright.

3. Remove protective side packaging.

4. Slide stove out of carton.

5. Remove protective plastic wrap.

6. Remove screen by lifting and then pulling forward.

7. Remove log set by cutting plastic ties.

8. Carefully unwrap log.

9. Check for any shipping damage. If stove or log is damaged, promptly inform dealer where you bought stove.

PRODUCT FEATURES

SAFETY PILOT

This heater has a pilot with an Oxygen Depletion Sensing (ODS) safety shutoff system. The ODS/pilot is a required feature for vent-free room heaters. The ODS/pilot shuts off the heater if there is not enough fresh air.

PIEZO IGNITION SYSTEM

This heater has a piezo ignitor. This system requires no matches, batteries or other sources to light heater.

AIR FOR COMBUSTION

AND VENTILATION

WARNING: This heater shall not be installed in a conﬁned space or unusually tight con

struction unless provisions are provided for adequate combus

tion and ventilation air. Read the following instructions to insure proper fresh air for this and other fuel-burning appliances in your home.

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

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

Exhaust fans, ﬁreplaces, clothes dryers and fuel burning appliances draw air from the house to operate. You must provide adequate fresh air for these appliances. This will insure proper venting of vented fuel-burning appliances.

PROVIDING ADEQUATE VENTILATION

The following are excerpts from National Fuel Gas Code, ANSI Z223.1/NFPA 54, Section 5.3, Air for Combustion and Ventilation.

All spaces in homes fall into one of the three fol

lowing ventilation classiﬁcations:

1. Unusually Tight Construction

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.

Page 6

www.desatech.com

111417-01B

Unusually tight construction is deﬁned as construction where:

a. walls and ceilings exposed to the out

side atmosphere have a continuous water vapor retarder with a rating of one perm (6 x 10

-11

kg per pa-sec-m2) 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 7.

If your home does not meet all of the three criteria above, proceed to Determining Fresh-Air Flow For Heater Location.

Conﬁned and Unconﬁned Space

The National Fuel Gas Code, ANSI Z223.1/NFPA 54 deﬁnes a conﬁned space as a space whose

volume is less than 50 cubic feet per 1,000 Btu per hour (4.8 m

per kw) of the aggregate input rating of all appliances installed in that space and an unconﬁned space as a space whose volume is not less than 50 cubic feet per 1,000 Btu per hour (4.8 m3 per kw) of the aggregate input rating of all appliances installed in that space. Rooms communicating directly with the space in which the appliances are installed*, through openings not furnished with doors, are considered a part of the unconﬁned space.

* Adjoining rooms are communicating only if there are doorless passageways or ventilation grills between them.

DETERMINING FRESH-AIR FLOW FOR HEATER LOCATION

Determining if You Have a Conﬁned or Unconﬁned Space

Use this work sheet to determine if you have a conﬁned or unconﬁned space.

Space: Includes the room in which you will install

heater plus any adjoining rooms with doorless passageways or ventilation grills between the rooms.

1. Determine the volume of the space (length x width x height).

Length x Width x Height =__________cu. ft.

(volume of space)

Example: Space size 20 ft. (length) x 16 ft.

(width) x 8 ft. (ceiling height) = 2,560 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. Multiply the space volume by 20 to determine the maximum Btu/Hr the space can support.

__________ (volume of space) x 20 = (Maxi-

mum Btu/Hr the space can support)

Example: 2,560 cu. ft. (volume of space) x 20 =

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

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

Vent-free ﬁreplace

__________ 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

* Do not include direct-vent gas appliances. Di

rect-vent draws combustion air from the outdoors and vents to the outdoors.

Example:

Gas water heater

__________ Btu/Hr

Vent-free ﬁreplace +

__________ Btu/Hr

Total =

__________ Btu/Hr

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

_________

Btu/Hr (maximum the space can support)

_________

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

Example: 51,200 Btu/Hr (maximum the space

can support)

69,000 Btu/Hr (actual amount of

Btu/Hr used)

The space in the 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 ad

ditional fresh air. Your options are as follows:

A. Rework worksheet, adding the space of an adjoin

ing 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 Ventila

tion Air From Outdoors, page 7.

C. Install a lower Btu/Hr ﬁreplace, if lower Btu/Hr

size makes room unconﬁned.

30,000

39,000

69,000

AIR FOR COMBUSTION

AND VENTILATION

Continued

Page 7

www.desatech.com

111417-01B 7

AIR FOR COMBUSTION

AND VENTILATION

Continued

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.

WARNING: If the area in which the heater may be operated is smaller than that deﬁned as an unconﬁned space or if the building is of unusually tight construction, provide adequate combustion and ventilation air by one of the methods described in the National Fuel Gas Code, ANSI Z223.1/NFPA 54 Section 5.3 or applicable local codes.

VENTILATION AIR

Ventilation Air From Inside Building

This fresh air would come from an adjoining un

conﬁned space. When ventilating to an adjoining unconﬁned space, you must provide two permanent openings: one within 12" of the ceiling and one within 12" of the ﬂoor on the wall connecting the two spaces (see options 1 and 2, Figure 2). You can also remove door into adjoining room (see option 3, Figure 2). Follow the National Fuel Gas

Code, ANSI Z223.1/NFPA 54, Section 5.3, Air for Combustion and Ventilation for required size of

ventilation grills or ducts.

Figure 2 - Ventilation Air from Inside

Building

Remove

Door into

Adjoining

Room, Option

Ventilation Grills

Into Adjoining Room,

Option

ntilation

Grills

Into Adjoining

Room,

Option 1

12"

Outlet Air

ntilated

Attic

Outlet

Inlet Air

Ventilated

Crawl Space

Crawl

Space

To Attic

Figure 3 - Ventilation Air from Outdoors

Ventilation Air From Outdoors

Provide extra fresh air by using ventilation grills or ducts. You must provide two permanent openings: one within 12" of the ceiling and one within 12" of the ﬂoor. Connect these items directly to the outdoors or spaces open to the outdoors. These spaces include attics and crawl spaces. Follow the

National Fuel Gas Code, ANSI Z223.1/NFPA 54, Section 5.3, Air for Combustion and Ventilation for

required size of ventilation grills or ducts. IMPORTANT: Do not provide openings for inlet

or outlet air into attic if attic has a thermostatcontrolled power vent. Heated air entering the attic will activate the power vent.

Page 8

www.desatech.com

111417-01B

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 Air

for Combustion and Ventilation

, page 5.

CHECK GAS TYPE

Use the correct gas type (natural or propane/LP) for your unit. If your gas supply is not correct, do not install heater. Call dealer where you bought heater for proper type heater.

WARNING: This appliance is equipped for (natural or propane/LP) gas. Field conversion is not permitted.

CLEARANCES TO COMBUSTIBLES

(Vent-Free Operation Only)

WARNING: Maintain the minimum clearances. If you can, provide greater clearances from ﬂoor, ceiling and adjoining side and back walls.

Carefully follow the instructions below. This stove is a freestanding unit designed to set directly on the ﬂoor. IMPORTANT: You must maintain minimum wall and ceiling clearances during installation. The minimum clearances are shown in Figure 4, page 9. Measure from outermost point of stove top.

Minimum Wall and Ceiling Clearances (see Figure 4, page 9)

A. Clearances from outermost point of stove top

to any combustible side wall should not be less than 12 inches.

B. Clearances from outermost point of stove top

to any combustible back wall should not be less than 6 inches (Includes corner installations).

C. Clearances from the stove top to the ceiling

should not be less than 48 inches.

INSTALLATION

NOTICE: This heater is intended for use as supplemental heat. Use this heater along with your primary heating system. Do not install this heater as your pri

mary heat source. If you have a central heating system, you may run system’s circulating blower while using heater. This will help circulate the heat throughout the house. In the event of a power outage, you can use this heater as your primary heat source.

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

WARNING: Never install the heater

• in a bedroom or bathroom

• in a recreational vehicle

• where curtains, furniture, cloth

ing or other ﬂammable objects are less than 42 inches from the front, top or sides of the heater

• 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 (such as, but not limited to, tobacco smoke, aromatic candles, cleaning ﬂu

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

Page 9

www.desatech.com

111417-01B 9

Minimum

48"

Minimum

Ceiling

Floor

Back Wall

12"

Minimum

12"

Minimum

48"

Minimum

Ceiling

Side Wa

INSTALLATION

Continued

Corner

Minimum

Back Wall

Side Wall

12 "

Minimum

12 "

Minimum

6 "

Minimum

Figure 4 - Minimum Clearance to Walls

and Ceiling

Front View

Top View

Front of Stove Unit

Side View

Top View

Front of Stove Unit

CONNECTING TO GAS SUPPLY

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

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

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

Installation Items Needed

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

• external regulator - propane/LP only (supplied by installer)

• piping (check local codes)

• sealant (resistant to propane/LP gas)

• equipment shutoff valve *

• test gauge connection *

• sediment trap

• tee joint

• pipe wrench

* A CSA design-certiﬁed equipment shutoff valve with 1/8" NPT tap is an acceptable alternative to test gauge connection. Purchase the optional CSA design-certiﬁed equipment shutoff valve from your dealer. See

Accessories, page 30.

Page 10

www.desatech.com

111417-01B

For propane/LP units, the installer must supply an external regulator. The external regulator will reduce incoming gas pressure. You must reduce incoming gas pressure to between 11 and 14 inches of water. If you do not reduce incoming gas pres

sure, heater regulator damage could occur. Install external regulator with the vent pointing down as shown in Figure 6. Pointing the vent down protects it from freezing rain or sleet.

CAUTION: Use only new, black iron or steel pipe. Internally-tinned copper tubing may be used in certain areas. Check your local codes. Use pipe of 1/2" diameter or greater to allow proper gas volume to heater. If pipe is too small, undue loss of volume will occur.

Installation must include an equipment shutoff valve, union and plugged 1/8" NPT tap. Locate NPT tap within reach for test gauge hook up. NPT tap must be upstream from heater (see Figure 7).

IMPORTANT: Install equipment shutoff valve in an accessible location. The equipment shutoff valve is for turning on or shutting off the gas to the appliance.

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

INSTALLATION

Continued

Figure 6 - External Regulator With Vent

Pointing Down

Propane/LP Supply Tank

External Regulator

Vent Pointing Down

Figure 5 - Gas Regulator Location and

Gas Line Access Into Stove Cabinet

Minimum

48"

Minimum

Ceiling

Back Wall

Front of Stove Unit

Gas Regulator Inlet Connection

Back View

Side View

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

We recommend that you install a sediment trap in supply line as shown in Figure 7. Locate sediment trap where it is within reach for cleaning. Install in piping system between fuel supply and heater. Locate sediment trap where trapped matter is not likely to freeze. A sediment trap traps moisture and contaminants. This keeps them from going into heater controls. If sediment trap is not installed or is installed wrong, heater may not run properly.

CAUTION: Avoid damage to regulator. Hold gas regulator with wrench when connecting it to gas piping and/or ﬁttings.

Tee Pipe Cap Joint Nipple

3" Min.

Sediment Trap

Gas Regulator of Heater

Natural Gas

From Gas Meter (5" W.C.** to 10.5" W.C. Pressure) Propane/LP From External Regulator (11" W.C.** to 14" W.C. Pressure)

CSA DesignCertiﬁed Equipment Shutoff Valve With 1/8" NPT Tap*

Approved Flexible Gas Hose (if allowed by local codes)

Figure 7 - Gas Connection

* Purchase the optional CSA design-certiﬁed

equipment shutoff valve from your dealer. See Accessories, page 30.

** Minimum inlet pressure for purpose of input

adjustment.

Page 11

www.desatech.com

111417-01B 11

CHECKING GAS CONNECTIONS

WARNING: Test all gas piping and connections, internal and external to unit, for leaks after installing or servicing. Correct all leaks at once.

WARNING: Never use an open ﬂame to check for a leak. Apply a noncorrosive leak detec

tion ﬂuid to all joints. Bubbles forming show a leak. Correct all leaks at once.

CAUTION: Make sure external regulator has been installed between propane/LP supply and heater. See guidelines under Con- necting to Gas Supply, page 9.

PRESSURE TESTING GAS SUPPLY PIPING SYSTEM

Test Pressures In Excess Of 1/2 PSIG (3.5 kPa)

Disconnect heater with its appliance main gas valve (control valve) and equipment 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 equipment shutoff valve was connected.

3. Pressurize supply piping system by either opening propane/LP supply tank valve for propane/LP gas or opening main gas valve located on or near gas meter for natural gas or using compressed air.

4. Check all joints of gas supply piping system. Apply a noncorrosive leak detection ﬂuid to all joints. Bubbles forming show a leak.

5. Correct all leaks at once.

Reconnect heater and equipment shutoff valve to gas supply. Check reconnected ﬁttings for leaks.

Test Pressures Equal To or Less Than 1/2 PSIG (3.5 kPa)

1. Close equipment shutoff valve (see Figure 8).

2. Pressurize supply piping system by either opening propane/LP supply tank valve for propane/LP gas or opening main gas valve located on or near gas meter for natural gas or using compressed air.

3. Check all joints from gas meter to equipment shutoff valve (see Figures 9 or 10). Apply a noncorrosive leak detection ﬂuid to all joints. Bubbles forming show a leak.

4. Correct all leaks at once.

PRESSURE TESTING HEATER GAS CONNECTIONS

1. Open equipment shutoff valve (see Figure 8).

2. Open main gas valve located on or near gas meter for natural gas or open propane/LP supply tank valve.

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

4. Check all joints from equipment shutoff valve to control valve (see Figures 9 or 10). Apply a noncorrosive leak detection ﬂuid to all joints. Bubbles forming show a leak.

5. Correct all leaks at once.

6. Light heater (see Operating Heater, page 16). Check all other internal joints for leaks.

7. Turn off heater (see To Turn Off Gas to Appli

ance, page 17).

Open

Closed

Equipment Shutoff Valve

Figure 8- Equipment Shutoff Valve

Control Valve Location

Propane/LP Supply Tank

Equipment Shutoff Valve

Gas Meter

Equipment Shutoff Valve

Figure 9 - Checking Gas Joints for

Propane/LP Gas

Figure 10 - Checking Gas Joints for

Natural Gas

Control Valve Location

INSTALLATION

Continued

Page 12

www.desatech.com

111417-01B

INSTALLING LOGS

WARNING: Failure to position the parts in accordance with these diagrams or failure to use only parts speciﬁcally approved with this heater may result in property damage or personal injury.

CAUTION: After installation and periodically thereafter, check to ensure that no ﬂame comes in contact with any log. With the heater set to HI, check to see if ﬂames contact any log. If so, reposition logs according to the log installation instructions in this manual. Flames contact

ing logs will create soot.

It is very important to install the logs exactly as instructed. Do not modify logs. Only use logs supplied with heater.

Place one-piece log set on grate to ﬁt as illustrated in Figure 11. Make sure log sits ﬂat on ﬁrebox ﬂoor (see Figure 11).

IMPORTANT: Make sure log does not cover any burner ports (see Figure 12).

INSTALLATION

Continued

Figure 11 - Installing One-Piece Log Set

One Piece Log Set

Firebox Floor

Figure 12 - Installing One-Piece Log set

(Top View)

One Piece Log Set

Burner Ports

INSTALLING OPTIONAL BLOWER ACCESSORY GA3750

Tools required: Phillips screwdriver

NOTICE: Shut off gas heater during the following blower installation.

1. Remove 2 screws from rear tabs on top trim. Pull trim forward to remove (see Figure 13).

2. Remove top panel of stove by removing three screws from under top lip on each side of stove (see Figure 13).

3. Facing front of stove, carefully slide top panel forward until it is completely removed from stove (see Figure 14).

Figure 13 - Removing Stove Top Panel

Top Trim

Top Panel

Screws

Figure 14 - Installing Bushing

Bushing

Page 13

www.desatech.com

111417-01B 13

INSTALLATION

Continued

9. Working from the rear of the stove, place entire power cord, including speed control housing, in lower control compartment.

10. Route ends of 3-wire power cord up from the lower control compartment through the plastic bushing, then up to the upper cavity of stove (see Figure 17).

11. Attach the terminal ends of the white and black power cord wires to the terminals on the blower motor (see Figure 14, page 12). Push ﬁrmly.

12. Attach the terminal end of the green power cord wire to the front tab of the blower housing using screw provided (see Figure 14, page 12).

13. Using the four screws previously removed, mount blower assembly to stove by reattach

ing blower brackets to rear panel (see Figure

16). Tighten screws securely.

14.

Install plastic control knob onto output shaft of speed control housing (see Figure 17). Place speed control housing just inside control compartment door in front of stove (see Figure 18, page 14).

4. Install one plastic bushing provided in blower kit into the 1

/2" hole in the left rear of ﬁrebox ﬂoor. Access hole through the rectangular opening in the rear panel (see Figure 15).

5. Disconnect power cord wires from blower motor (if connected) (see Figure 15).

6. Disconnect green ground wire from blower housing (if connected) by removing screw holding wire terminal (see Figure 15).

7. Remove the two blower mounting brackets from the rear panel by removing two screws each (see Figure 16).

8. Attach the two mounting brackets to blower housing using four screws pro vided in blower kit (2 for each bracket) (see Figure

16). Tighten screws securely. Place blower assembly temporarily on top of ﬁrebox.

Figure 16 - Removing Blower Brackets

from Stove and Attaching to Blower

Blower

Blower Bracket

Firebox Top

Screws

Black Powercord Wire

Figure 15 - Removing Wires from Blower

Screw

Green Ground Wire

White Powercord Wire

Power Cord

Speed Control Housing

Control Knob

Figure 17 - Routing Power Cord

Wiring Diagram Decal

101584-05

120 Vac. 60 Hz. . 78 Amps

WARNING: Never attempt to service heater while it is plugged in, operating or hot. Burns and electrical shock could result. Only a qualiﬁed service person should service or repair heater.

If any of the original wire as supplied with the appliance must be replaced, it must be replaced with 105°C wire or itʼs equivalent.

WARNING: Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation. Verify proper operation after servicing.

Variable

Fan Switch

White

Black

Green

0/115

A.C.

Blower

Motor

Black

Off

DESA Heating Products, Bowling Green, KY

Page 14

www.desatech.com

111417-01B

INSTALLATION

Continued

15. Using two screws provided in blower kit, mount blower speed control housing to mount

ing tab in left side of lower control compart

ment (see Figure 18).

16. Check to make sure that the power cord is completely clear of blower wheel and there are no foreign objects in blower wheel.

17. Carefully replace stove top panel. Align holes and replace six screws removed in step 2, page

12. Slide top trim onto top panel. Attach with 2 screws removed in step 1, page 12.

18. Peel off the backing paper and stick the sup

plied wiring diagram decal on the stove ﬂoor as shown in Figure 17, page 13.

19. Plug power cord into a convenient 3-prong grounded wall receptacle near the stove.

20. Using speed control knob, turn blower on and check for operation.

21. All remaining parts from blower kit may be discarded.

WARNING: ELECTRICAL GROUNDING INSTRUCTIONS This appliance is equipped with a three-prong (grounding) plug for your protection against shock hazard and should be plugged directly into a properly grounded three-prong receptacle.

Figure 18 - Installing Blower Control

Housing

Blower Speed Control Housing

INSTALLING OPTIONAL BLOWER ACCESSORY GA3650TA

Tools required: Phillips screwdriver

NOTICE: Shut off gas heater during the following blower installation.

1. Remove 2 screws from rear tabs on top trim. Pull trim forward to remove (see Figure 13, page 12).

2. Remove three screws from under top lip on each side of stove to remove top panel (see Figure 13, page 12).

3. Facing front of stove, carefully slide top panel forward until it is completely removed from stove (see Figure 13, page 12).

6. Install one plastic bushing provided in blower kit into the 1

/2" hole in the left rear of ﬁrebox

ﬂoor. Access hole through the rectangular open

ing in the rear panel (see Figure 14, page 12).

4. Disconnect power cord wires from blower mo

tor (if connected) (see Figure 15, page 13).

5. Disconnect green ground wire from blower housing (if connected) by removing screw hold

ing wire terminal (see Figure 15, page 13).

7. Remove the two blower mounting brackets from the rear panel by removing two screws each (see Figure 16, page 13).

8. Attach the two mounting brackets to blower housing using four screws provided in blower kit (2 for each bracket) (see Figure 16, page

13). Tighten screws securely. Place blower assembly temporarily on top of ﬁrebox.

9. If screen is installed, carefully lift slightly and pull forward to remove.

10. If logs are installed, carefully remove and set aside.

11. Remove three screws and cover plate from center of ﬁrebox back panel. Keep screws but discard cover plate (see Figure 19).

Figure 19 - Removing Cover Plate

Cover Plate

Firebox Back Panel

Screws

Page 15

www.desatech.com

111417-01B 15

INSTALLATION

Continued

12. Locate thermostatic switch/cover plate assembly and wire harness supplied with blower. Attach wire harness terminals to terminals on thermostatic switch. Push ﬁrmly. Make sure the bottom hole of cover is on the opposite side from the wire harness (see Figure 20).

13. Feed terminal ends of wire harness into the hole in ﬁrebox back panel from front of ﬁre

box. Pull the ends of the harness to the top of ﬁrebox near blower (see Figure 21).

14. Align holes in the switch/cover assembly with holes in ﬁrebox back panel. Using 3 screws from step 11, attach assembly to ﬁrebox back panel. Tighten screws ﬁrmly (see Figure 21).

15. Working from the rear of the stove, place entire power cord, including speed control housing, in lower control compartment (see Figure 22).

16. Route ends of 3-wire power cord up from the lower control compartment through the plastic bushing, then up to the upper cavity of stove (see Figure 22).

17. Connect white wire from speed control to either terminal on blower motor (see Figure

22). Push ﬁrmly.

18. Connect the black wire from speed control to blue wire on switch/cover assembly (see Figure 22).

19. Connect red wire from switch/cover assembly to remaining terminal on blower motor (see Figure 22). Push ﬁrmly.

20. Attach green wire from speed control to front tab of blower housing using screw provided (see Figure 22). Tighten securely.

21. Using the four screws previously removed, mount blower assembly to stove by reattach

ing blower brackets to rear panel (see Figure 16, page 13). Tighten screws securely.

Figure 20 - Attaching Wire Harness to

Thermostatic Switch and Cover Assembly

Thermostatic Switch Mounted to Cover

Wire Harness

Bottom Hole

Figure 21 - Assembling Thermostatic

Switch and Cover to Firebox Back Panel

Thermostatic Switch Mounted to Cover

Wire Harness

Hole in Firebox Back Panel

Screws

Wire Harness

Power Cord

Speed Control Housing

Control Knob

Figure 22 - Connecting Switch, Blower

and Speed Control Wires

Wiring Diagram Decal

Blower

Red Switch Wire

Green Ground Wire

Ground Wire Screw

White Speed Control Wire

Black Speed Control Wire

Red

riable

Fan Switch

(N.O.)

Green White

0/115

A.C.

Blower

Motor

Black

Off

Black

Blue

120 Vac. 60 Hz. 90 Amps

WARNING: Never attempt to service heater while it is plugged

in, operating or hot. Burns and electrical shock could result. Only a qualiﬁed service person should service or repair heater.

WARNING: Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation. Verify proper operation after servicing.

If any of the original wire as supplied with the appliance must be replaced, it must be replaced with 105°C wire or itʼs equivalent.

Blue Switch Wire

DESA Heating Products, Bowling Green, KY

Page 16

www.desatech.com

111417-01B

INSTALLATION

Continued

22. Install plastic control knob onto output shaft of speed control housing (see Figure 22, page

15). Place speed control housing just inside control compartment door in front of stove (see Figure 18, page 14).

23. Using two screws provided in blower kit, mount blower speed control housing to mount

ing tab in left side of lower control compart

ment (see Figure 18, page 14 ).

24. Check to make sure that the power cord is completely clear of blower wheel and there are no foreign objects in blower wheel.

25. Carefully replace stove top panel. Align holes and replace six screws removed in step 2, page

14. Slide top trim over tip panel. Attach with 2 screws removed in step 1, page 14.

26. Peel off the backing paper and stick the sup

plied wiring diagram decal on the stove ﬂoor as shown in Figure 22, page 15.

27. Plug power cord into a convenient 3-prong grounded wall receptacle near the stove.

28. Using speed control knob, turn blower on and check for operation.

29. Install logs (see

Installing Logs, page 12).

30. Install screen assembly by aligning keyhole slots in screen assembly and shoulder screws on stove. Push back and down to secure.

31. All remaining parts from blower kit may be discarded.

Note: If any of the original wire, as supplied with the appliance, must be replaced, it must be replaced with 105°C wire or itʼs equivalent.

OPERATING HEATER

FOR YOUR SAFETY

READ BEFORE LIGHTING

WARNING: If you do not follow these instructions exactly, a ﬁre or explosion may result causing property damage, per

sonal 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 neighborʼs phone. Follow the gas supplierʼs 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, donʼt try to repair it, call a qualiﬁed service tech

nician 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

NOTICE: During initial operation of new heater, burning logs will give off a paper-burning smell. Orange ﬂame will also be pres

ent. Open a window to vent smell. This will only last a few hours.

1. STOP! Read the safety information above.

Make sure equipment shutoff valve is fully open.

3. Turn control knob clockwise to the OFF position.

Page 17

www.desatech.com

111417-01B 17

Figure 23 - Control Knob and Ignitor

Button Location

Control Knob

Ignitor Button

OPERATING HEATER

Continued

Figure 24 - Pilot

Thermocouple

Pilot Burner

TO TURN OFF GAS

TO APPLIANCE

Shutting Off Heater

Turn control knob clockwise to the OFF position.

Shutting Off Burners Only (pilot stays lit)

Turn control knob clockwise to the PILOT position.

THERMOSTAT CONTROL

OPERATION

The thermostat control knob can be set to any comfort level between HI and LO. The thermostat will gradually modulate the heat output and ﬂame height from higher to lower settings or pilot, in order to maintain the comfort level you select. The ideal comfort setting will vary by household depending upon the amount of space to be heated, the output of the central heating system, etc.

Note: Selecting the HI setting with the control knob will cause the burners to remain fully on, without modulating down in most cases.

MANUAL LIGHTING

PROCEDURE

1. Follow steps 1 through 5 under Lighting Instructions, starting on page 16.

2. Depress control knob and light pilot with match.

3. Keep control knob pressed in for 30 seconds after lighting pilot. After 30 seconds, release control knob. Now follow step 8 under Lighting Instructions, column 1.

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, column 2, page 16. If you donʼt 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 23).

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 or more. This will allow air to bleed from the gas system.

6. With control knob pressed in, press and release ignitor button. This will light pilot. The pilot is attached to the front burner. If needed, keep pressing ignitor button until pilot lights.

Note: If pilot does not stay lit, 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.

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

• If control knob does not pop out 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 for system to reset before lighting pilot again.

8. Turn control knob counterclockwise to desired heating level. The burners should light. Set control knob to any heat level between HI and LO.

CAUTION: Do not try to adjust heating levels by using the equipment shutoff valve.

Page 18

www.desatech.com

111417-01B

OPERATING HEATER

Continued

OPERATING OPTIONAL

BLOWER ACCESSORY

Light your gas appliance with the blower off. Turn the blower on to deliver heated air at the top louvers. The blower features a variable control which allows you to select the speed you desire.

If Using the GA3650TA Blower Accessory:

In the ON position, the blower will start when the thermostat senses a sufﬁcient increase in ﬁrebox temperature (approximately 10 to 20 minutes depending on heat setting). Note: Your gas stove and thermostat blower will not turn on and off at the same time. The stove may run for several minutes before the blower turns on. After the heater modulates to the pilot position, the blower will continue to run. The blower will shut off after the ﬁrebox temperature decreases.

Note: It is safe to operate stove with blower turned off. However, the blower helps distribute heated air from the stove.

Note: Periodically check the louvers of the ﬁrebox and remove any dust, dirt or other obstructions.

INSPECTING BURNERS

Check pilot ﬂame pattern and burner ﬂame patterns often.

PILOT FLAME PATTERN

Figure 25 shows a correct pilot ﬂame pattern. Figure 26 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.

If pilot ﬂame pattern is incorrect, as shown in Figure 26

• turn heater off (see To Turn Off Gas to Appli

ance, page 17)

• see Troubleshooting

, page 21

Note: The pilot ﬂame on natural gas units will have a slight curve, but ﬂame should be blue and have no yellow or orange color.

Figure 25 - Correct Pilot Flame Pattern

(Propane/LP Shown)

Figure 26 - Incorrect Pilot Flame Pattern

(Propane/LP Shown)

Thermocouple

Pilot Burner

Thermocouple

Figure 27 - Correct Flame Pattern with

Control Knob Set to High Flame.

Figure 28 - Incorrect Flame Pattern with

Control Knob Set to High Flame

Approx. 3-6" Above Top of Logs

More Than 8" Above Top of Logs

BURNER FLAME PATTERN

Figure 27 shows a correct burner ﬂame pattern. Figure 27 shows an incorrect burner ﬂame pattern. If burner ﬂame pattern is incorrect,

• turn heater off (see To Turn Off Gas to Appli

ance, page 17)

• see Troubleshooting

, page 21

Page 19

www.desatech.com

111417-01B 19

CLEANING AND

MAINTENANCE

WARNING: Turn off heater and let cool before cleaning.

CAUTION: You must keep control areas, burner and circulating air passageways of heater clean. Inspect these areas of heater before each use. Have heater inspected yearly by a qualiﬁed service person. Heater may need more frequent clean

ing due to excessive lint from carpeting, bedding material, pet hair, etc.

WARNING: Failure to keep the primary air opening(s) of the burner(s) clean may result in sooting and property damage.

BURNER INJECTOR HOLDER AND PILOT AIR INLET HOLE

The primary air inlet holes allow the proper amount of air to mix with the gas. This provides a clean burning ﬂame. Keep these holes clear of dust, dirt, lint and pet hair. Clean these air inlet holes prior to each heating season. Blocked air holes will create soot. We recommend that you clean the unit every three months during operation and have heater inspected yearly by a qualiﬁed service person.

We also recommend that you keep the burner tube and pilot assembly clean and free of dust and dirt. To clean these parts we recommend using compressed air no greater than 30 PSI. Your local computer store, hardware store or home center may carry compressed air in a can. You can use a vacuum cleaner in the blow position. If using com

pressed air in a can, please follow the directions on the can. If you don't follow directions on the can, you could damage the pilot assembly.

1. Shut off the unit, including the pilot. Allow

the unit to cool for at least thirty minutes.

2. Inspect burner, pilot and primary air inlet

holes on injector holder for dust and dirt (see Figure 29).

Figure 29 - Injector Holder On Outlet

Burner Tube

Injector Holder

Primary Air Inlet Holes

Figure 30 - Pilot Inlet Air Hole

Burner Tube

Pilot Assembly

Pilot Air Inlet Hole

Ports/ Slots

3. Blow air through the ports/slots and holes in the burner.

4. Check the injector holder located at the end of the burner tube again. Remove any large particles of dust, dirt, lint or pet hair with a soft cloth or vacuum cleaner nozzle.

5. Blow air into the primary air holes on the injector holder.

6. In case any large clumps of dust have now been pushed into the burner repeat steps 3 and 4.

Clean the pilot assembly also. A yellow tip on the pilot ﬂame indicates dust and dirt in the pilot as

sembly. There is a small pilot air inlet hole about two inches from where the pilot ﬂame comes out of the pilot assembly (see Figure 30). With the unit off, lightly blow air through the air inlet hole. You may blow through a drinking straw if compressed air is not available.

Page 20

www.desatech.com

111417-01B

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.

LOGS

• If you remove logs for cleaning, refer to Installing Logs, page 12, to properly replace logs.

• Replace log(s) if broken or chipped (dime-sized or larger).

MAIN BURNER

Periodically inspect all burner ﬂame holes with the heater running. All slotted burner ﬂame holes should be open with yellow ﬂame present. All round burner ﬂame holes should be open with a small blue ﬂame present. Some burner ﬂame holes may become blocked by debris or rust, with no ﬂame present. If so, turn off heater and let cool. Remove blockage. Blocked burner ﬂame holes will create soot.

SPECIFICATIONS

S39PT S39NT

Btu (Variable)

20,000/39,000 20,000/39,000

Type Gas Propane/LP Only Natural Only

Ignition Piezo Piezo

Manifold Pressure 8" W.C. 3.5" W.C.

Inlet Gas Pressure (in. of water) * Maximum 14" 10.5" Minimum 11" 5"

Dimensions, Inches (H x W x D) Stove

31 x 32 x 19 1/4 31 x 32 x 19 1/

Carton

24 x 31 1/2 x 35 1/4 24 x 31 1/2 x 35 1/

Weight, pounds Stove 78 lbs. 78 lbs. Shipping 95 lbs. 95 lbs.

* For purposes of input adjustment

CLEANING AND

MAINTENANCE

Continued

SERVICE HINTS

When Gas Pressure Is Too Low

• pilot will not stay lit

• burners will have delayed ignition

• heater will not produce speciﬁed heat

• propane/LP gas supply may be low

You may feel your gas pressure is too low. If so, con

tact your local propane/LP or natural gas supplier.

TECHNICAL SERVICE

You may have further questions about installation, operation or troubleshooting. If so, contact DESA Heating Productsʼ Technical Service Department at 1-866-672-6040. When calling please have your model and serial numbers of your heater ready.

You can also visit DESA Heating Productsʼ techni

cal services web site at www.desatech.com.

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 canʼt supply original replacement part(s), call DESA Heating Productsʼ Technical Service Department at 1-866-672-6040 for referral in

formation.

When calling DESA Heating Products, have ready

• your name

• your address

• model and serial numbers 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 part to the factory.

PARTS NOT UNDER WARRANTY

Contact authorized dealers of this product or Parts Central (see page 24). If they canʼt supply original

replacement part(s), call DESA Heating Products at 1-866-672-6040 for referral information.

When calling DESA Heating Products, have ready

• model number of your heater

• the replacement part number

Page 21

www.desatech.com

111417-01B 21

TROUBLESHOOTING

WARNING: Turn off and unplug heater and let cool before servicing.

Only a qualiﬁed service person should service and repair heater.

CAUTION: Never use a wire, needle or similar object to clean

ODS/pilot. This can damage ODS/pilot unit.

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

POSSIBLE CAUSE

1. Ignitor electrode not connected to ignitor cable

2. Ignitor cable pinched or wet

3. Piezo ignitor nut is loose

4. Broken ignitor cable

5. Bad piezo ignitor

6. Ignitor electrode broken

7. Ignitor electrode positioned wrong

1. Gas supply turned off or equip

ment shutoff valve closed

2. Control knob not in PILOT position

3. Control knob not pressed in while in PILOT position

4. Air in gas lines when installed

5. Depleted gas supply (pro

pane/LP only)

6. ODS/pilot is clogged

7. Gas regulator setting is not correct

OBSERVED PROBLEM

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

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

REMEDY

1. Reconnect ignitor cable

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

Tighten nut holding piezo ignitor to base panel of log set. Nut is located behind base panel

4. Replace ignitor cable

5. Replace piezo ignitor

6. Replace pilot assembly

7. Replace pilot assembly

1. Turn on gas supply or open equipment 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 op

eration until air is removed

5. Contact local propane/LP gas company

6. Clean ODS/pilot (see Cleaning and Maintenance, page 19) or replace ODS/pilot assembly

7. Replace gas control

Page 22

www.desatech.com

111417-01B

TROUBLESHOOTING

Continued

OBSERVED PROBLEM

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

Burner does not light after ODS/ pilot is lit

Delayed ignition burner

Burner backﬁring during com

bustion

Slight smoke or odor during initial operation

REMEDY

1. Press in control knob fully

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

3. Fully open equipment shutoff valve

4. A) Contact local natural or propane/LP gas company

B) Cl ean ODS/p i lot (see

Cleaning and Maintenance

, page 19) or replace ODS/pilot assembly

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

6. Replace pilot assembly

7. Replace control valve

1. Clean burner (see Cleaning and Maintenance, page 19) or replace burner oriﬁce

2. Contact local natural or pro

pane/LP gas company

3. Reconnect leads (see wiring diagram)

4. Replace battery in transmitter and receiver

1. Contact local natural or pro

pane/LP gas company

2. Clean burner (see Cleaning and Maintenance, page 19) or replace burner oriﬁce

1. Clean burner (see Cleaning and Maintenance, page 19) or replace burner oriﬁce

2. Replace damaged burner

3. Replace gas control

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

nance, page 19)

2. Replace gas control

3. Problem will stop after a few hours of operation

POSSIBLE CAUSE

Control knob not fully pressed in

2. Control knob not pressed in long enough

3. Equipment shutoff valve not fully open

4. Pilo t flam e not touchi ng thermocouple, which allows thermocouple to cool, caus

ing 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

5. Thermocouple connection loose at control valve

6. Thermocouple damaged

7. Control valve damaged

1. Burner oriﬁce clogged

2. Inlet gas pressure is too low

3. Thermopile leads disconnect

ed or improperly connected

4. Burners will not come on in remote position

1. Manifold pressure is too low

2. Burner oriﬁce clogged

1. Burner oriﬁce is clogged or damaged

2. Damaged burner

3. Gas regulator defective

1. Not enough air

2. Gas regulator defective

3. Residues from manufacturing processes and logs curing

Page 23

www.desatech.com

111417-01B 23

OBSERVED PROBLEM

Moisture/condensation noticed on windows

Heater produces a whistling noise when burner is lit

Dark residue on logs or inside of stove

White powder residue forming within burner box or on adjacent walls or furniture

Heater produces a clicking/tick

ing noise just after burner is lit or shut off

POSSIBLE CAUSE

1. Not enough combustion/ventilation air

1. Tu rning cont rol 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. Improper log placement

2. Drafts or other air currents affecting ﬂame pattern

3. Air holes at burner inlet blocked

4. Burner ﬂame holes blocked

1. When heated, vapors from furniture polish, wax, carpet cleaners, etc. may turn into white powder residue

1. Metal expanding while heat

ing or contra cti ng whil e cooling

REMEDY

1. Refer to Air for Combustion and Ventilation requirements

(page 5)

1. Turn cont rol 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 or propane/LP gas company

3. Observe minimum installation clearances (see page 8)

4. Clean burner (see Cleaning and Maintenance, page 19) or replace burner oriﬁce

1. Properly locate logs (see In

stalling Logs, page 12)

2. Eliminate source of drafts around heater

3. Clean out air holes at burner inlet. Periodically repeat as needed

4. Remove blockage

1. Turn heater off when using furniture polish, wax, carpet cleaners or similar products

1. This is common with most heat

ers. If noise is excessive, contact qualiﬁed service person

TROUBLESHOOTING

Continued

Page 24

www.desatech.com

111417-01B

TROUBLESHOOTING

Continued

WARNING: If you smell gas

• Shut off gas supply.

• Do not try to light any appliance.

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

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

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

IMPORTANT: 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. These odors will disappear over time.

POSSIBLE CAUSE

1. Heater burning vapors from paint, hair spray, glues, clean

ers, chemicals, new carpet, etc. (See IMPORTANT state

ment above)

2. Gas leak. See Warning

statement at top of page

1. Not enough fresh air is avail

able

2. Low line pressure

3. O DS /pi l ot i s pa r tia l ly clogged

1. Gas leak. See Warning

statement at top of page

2. Control valve defective

1. Foreign matter between con

trol valve and burner

2. Gas leak. See Warning

statement at top of page

1. Excessive line or manifold pressure

2. Dirty primary air holes

REMEDY

1. Open window and ventilate room. Stop using odor caus

ing products while heater is running

2. Locate and correct all leaks (see Checking Gas Connec

tions, page 11)

1. Open window and/or door for ventilation

2. Contact local natural or pro

pane/LP gas company

3. Clean ODS/pilot (see Cleaning and Maintenance, page 19)

1. Locate and correct all leaks (see Checking Gas Connec

tions, page 11)

2. Replace control valve

1. Take apart gas tubing and remove foreign matter

2. Locate and correct all leaks (see Checking Gas Connec- tions, page 11)

1. Check manifold pressure and correct as needed

2. Clean burner air holes (see Cleaning and Maintenance, page 19)

OBSERVED PROBLEM

He ater pr oduces unwante d odors

Heater shuts off in use (ODS operates)

Gas odor even when control knob is in OFF position

Gas odor during combustion

Burner ﬂame is excessively large and is very near or touches the top of ﬁrebox

Page 25

www.desatech.com

111417-01B 25

PARTS CENTRALS

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

Tools & Equipment Co.

5 Manila Ave Hamden, CT 06514-0322 1-800-397-7553 203-248-7553

Portable Heater Parts

342 N. County Rd. 400 East Valparaiso, IN 46383-9704 219-462-7441 1-888-619-7060 www.portableheaterparts.com sales@portableheaterparts.com techservice@portableheaterparts.com

FBD

1349 Adams Street Bowling Green, KY 42103-3414 270-846-1199 1-800-654-8534 Fax: 1-800-846-0090 franktalk@aol.com

Master Parts Dist.

1251 Mound Ave. NW Grand Rapids, MI 49504-2672 616-791-0505 1-800-446-1446 www.nbmc.com

Washer Equipment Co.

1715 Main Street Kansas City, MO 64108-2195 KS, MO, AR 816-842-3911 www.washerparts.com

East Coast Energy

10 East Route 36 W. Long Branch, NJ 07764 732-870-8809 1-800-755-8809 www.njplaza.com/ecep

21st Century

2950 Fretz Valley Road Perkasie, PA 18944-4034 215-795-0400 800-325-4828

Laporte’s Parts & Service

2444 N. 5th Street Hartsville, SC 29550-7704 843-332-0191 Parts Department

Cans Unlimited

P.O. Box 645 Taylor, SC 29687-0013 803-879-3009 1-800-845-5301 cuisales@aol.com

Page 26

www.desatech.com

111417-01B

ILLUSTRATED PARTS BREAKDOWN

MODELS S39PT AND S39NT (SHOWN)

Page 27

www.desatech.com

111417-01B 27

PARTS LIST

This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Replacement Parts on page 20 of this manual.

KEY PART NUMBER NO. S39PT S39NT DESCRIPTION QTY.

1 107433-01 107433-01 Log Set 1 2 104286-01 104285-01 ODS Pilot 1 3 098249-01 098249-01 ODS Nut 2 4 107090-03 107090-03 Burner Outlet Tube 1 5 107089-01 107089-01 Inlet Tube 1 6 111124-01 111124-01 Burner Retainer Spring 1 7 099056-17 099056-16 Burner Oriﬁce Injector 1 8 101329-19 101329-20 Gas Control Valve 1 9 102772-01 102772-01 Burner 1 10 099387-09 099387-09 Pilot Tube 1 11 098271-10 098271-10 Ignitor Cable 1 12 101381-01 101381-01 Piezo Ignitor and Cover 1 13

____

105990-01 Pilot Shield 1

14 098867-10 098867-09 Regulator 1

Page 28

www.desatech.com

111417-01B

ILLUSTRATED PARTS BREAKDOWN

STOVE BODY FOR MODELS S39PT AND S39NT

Page 29

www.desatech.com

111417-01B 29

KEY NO. PART NO. DESCRIPTION QTY.

1 107085-01CK Top Panel, Stove 1 2 ** Pedestal Stove Assembly 1 3 107076-01CK Stove Base 1 4 ** Stove Back Panel 1 5 107082-01CK Top Trim 1 6 105657-01 Blower Bracket 2 7 107363-01CK Door 1 8 ** Firebox Back Panel 1 9 ** Firebox Floor 1 10 ** Firebox Top 1 11 107365-01CK Screen Assembly 1 12 101382-01 Valve Bracket 1 13 107092-01 Brass Trim, Bottom 1 14 107093-01 Brass Trim, Firebox 1 15 106754-01 Knob 1 16 101386-02 Door Hinge 2 17 099230-02 Shoulder Screw 4 18 107079-01CJ Heat Deﬂector 1 19 102455-12 Louver, Small 2 20 102455-13 Louver, Large 1 21 ** Support, End Louver 2 22 ** Support, Center Louver 2 23 101514-01 Blower Sensor Cover 1 24 103158-01 Magnet Catch 1 25 107083-01 Magnet Bracket 1 26 098304-03 Louver Screw 12

PARTS AVAILABLE — NOT SHOWN

101054-01 Lighting Instructions Plate 1 100563-01 Warning Plate 1 104108-06 Touch-Up Paint Kit 1

** Part not available for ﬁeld replacement.

PARTS LIST

STOVE BODY FOR MODELS S39PT AND S39NT

This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Replacement Parts on page 20 of this manual.

Page 30

www.desatech.com

111417-01B

ACCESSORIES

Purchase these heater accessories from your local dealer or Parts Central (see page 21). If they can- not supply these accessories call DESA Heating Productsʼ Sales Department at 1-866-672-6040 for referral information. You can also write to the address listed on the back page of this manual.

EQUIPMENT SHUTOFF VALVE GA5010

For all models. Equipment shutoff valve with 1/8" NPT tap. Fits 1/2" NPT pipe.

MANUALLY-CONTROLLED BLOWER KIT - GA3750

Provides better heat distribution. Features variable speed control knob.

THERMOSTATICALLY-CONTROLLED BLOWER KIT - GA3650TA

(Not Shown)

Provides better heat distribution. Features variable speed control knob.

CLEANING KIT - CCK

(Not Shown)

Your vent-free gas appliance requires regular cleaning and maintenance to prevent performance problems. This kit gives you the tools and instructions to make it easy to clean all critical areas of your appliance.

INFORMATION VIDEO - 108917-01

(Not Shown)

For all models. A care and maintenance video is available by calling 1-866-672-6040. You may also email your request to

productsupport@desaint.com.

Page 31

www.desatech.com

111417-01B 31

______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________

NOTES

Page 32

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

NOT A UPC

WARRANTY INFORMATION

KEEP THIS WARRANTY

Model

Serial No.

Date Purchased

111417-01 Rev. B 10/04

LIMITED WARRANTY

VENT-FREE GAS PEDESTAL STOVE

DESA Heating Products 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 Heating Products Authorized Service Center. Warranty part(s) MUST be obtained through authorized dealers of this product and/or DESA Heating Products 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, INCLUD

ING WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE TO TWO (2) YEARS ON ALL COMPONENTS FROM THE DATE OF FIRST PURCHASE; AND DESA HEATING PRODUCTSʼ LIABILITY IS HEREBY LIMITED TO THE PURCHASE PRICE OF THE PRODUCT AND DESA HEATING PRODUCTS 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:

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.

111417 01

Comfort Glow S39PT, S39NT Owner's Operation And Installation Manual

Specifications and Main Features

Frequently Asked Questions

User Manual