Desa HD18NRA, HD18PRA, HD24NRA, HD24PRA, HDL18NR Owner's Operation And Installation Manual

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Page 1

UNVENTED (VENT-FREE) GAS LOG HEATER

OWNER’S OPERATION AND INSTALLATION MANUAL

Patent Pending

Also Design Certied As

Vented Decorative Appliances

18" AND 24" REMOTE CONTROL READY MODELS

HD18NRA, HD18PRA, HD24NRA AND HD24PRA

WARNING: If the information in this manual is not

followed exactly, a re or explosion may result causing property damage, personal injury or loss of life.

— Do not store or use gasoline or other ammable

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 re department.

— Installation and service must be performed by a quali-

ed installer, service agency or the gas supplier.

INSTALLER: Leave this manual with the appliance.

CONSUMER: Retain this manual for future reference.

For more information, visit www.desatech.com

Page 2

Safety .................................................................. 2

TABLE OF CONTENTS

Product Identication ........................................... 5

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

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

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

Air For Combustion and Ventilation ..................... 6

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

Operation ........................................................... 18

Inspecting Burners............................................. 22

Cleaning and Maintenance ................................ 22

SAFETY

Specications .................................................... 23

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

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

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

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

Accessories ....................................................... 28

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

Parts .................................................................. 30

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

WARNING: Improper

installation, adjustment,

alteration, service or main-

tenance can cause injury or property damage. Refer

to this manual for correct

installation and operational procedures. For assis-

tance or additional infor-

mation consult a qualied installer, service agency or the gas supplier.

WARNING: This ap-

pliance is for installation only in a solid-fuel burning masonry or UL127 factory-built fireplace or in a listed ventless rebox enclosure. It is design-certied for these installations

in accordance with ANSI

Z21.11.2. Exception: Do not install this appliance in a factory-built replace that

includes instructions stat-

ing it has not been tested or should not be used with unvented gas logs.

WARNING: This is an

unvented gas-red 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 6

of this manual.

This appliance may be in-

stalled in an aftermarket,*

perma n ently locat e d, 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

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123167-01D2

Page 3

SAFETY

Continued

WARNING: This product

con tains an d/or gen erates

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 replace. Improper use of this replace can cause serious injury or death from burns, re, 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

u, with headaches, dizziness or nausea. If you have these signs, the replace may not be working properly. Get fresh air at once! Have replace serviced. Some people are

more affected by carbon monoxide than oth-

ers. These include pregnant women, people with heart or lung disease or anemia, those under the inuence of alcohol and those at

high altitudes. Natural and Propane/LP Gas: Natural and

propane/LP gases are odorless. An odormaking 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

warnings. Keep this manual for reference. It

is your guide to safe and proper operation of

this replace.

WARNING: Any change to

this heater 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 replace. Avoid any drafts that alter burner ame patterns. Ceiling fans can create drafts that alter burner ame patterns. Altered burner patterns can cause sooting.

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

Do not place clothing or other ammable material on or near the appliance. Never place any objects on the heater.

Heater base assembly becomes very hot when running heater. Keep children and adults away from hot surface to avoid burns or clothing ignition. Heater

will remain hot for a time after

shutdown. Allow surface to cool before touching.

Carefully supervise young chil-

dren when they are in the room

with heater.

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

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

123167-01D 3

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Page 4

SAFETY

Continued

1. This appliance is only for use with the type

of gas indicated on the rating plate. This

appliance is not convertible for use with

other gases.

2. Do not place propane/LP supply tank(s) inside any structure. Locate propane/LP supply tank(s) outdoors (propane/LP units only).

3. To prevent performance problems, the use

of a propane/LP tank of less than 100 lbs. capacity is not recommended (propane/ LP units only).

4. 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 sup-

plier’s instructions

• if you cannot reach your gas supplier,

call the re department

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

6. Do not burn solid-fuel in a masonry or

UL127 factory-built replace in which a

vent-free room heater is installed.

7. Before installing in a solid fuel burning replace, the chimney ue and rebox must be cleaned of soot, creosote, ashes and loose paint by a qualied chimney cleaner. Creosote will ignite if highly heated. A dirty chimney ue may create and distribute soot within the house. Inspect chimney ue and rebox for damage. If damaged, repair ue before operating heater.

8. If replace has glass doors, never operate this heater with glass doors closed. If you operate heater with doors closed, heat buildup inside replace will cause glass to

burst. Make sure there are no obstructions

across openings of replace.

9. This log heater is designed to be smoke-

less. If logs ever appear to smoke, turn off heater and call a qualied service person.

Note: During initial operation, slight smoking could occur due to log curing and heater burning manufacturing residues.

10. To prevent the creation of soot, follow the

instructions in Cleaning and Maintenance, page 22.

11. 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.

12. This heater needs fresh, outside air ven-

tilation 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 6. If heater keeps shutting off, see

Troubleshooting, page 24.

13. Do not run heater

• where ammable liquids or vapors are

used or stored

• under dusty conditions

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

15. Do not use heater if any part has been ex-

posed to or under water. Immediately call a qualied 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.

16. Do not operate heater if any log is broken. Do not operate heater if a log is chipped

(dime-sized or larger).

17. Turn heater off and let cool before servic-

ing. Only a qualied service person should

service and repair heater.

18. Operating heater above elevations of

4,500 feet could cause pilot outage.

19. Provide adequate clearances around air openings.

20. Solid fuels shall not be burned in a replace where a decorative appliance is

installed.

21. Installation and the provisions for combustion and ventilation air must conform

with the National Fuel Gas Code, ANSI Z223.1/NFPA 54.

22. When installing as a vented appliance in a

manufactured home or mobile home, the installation must conform with the Manu-

factured Home Construction and Safety Standard, Title 24 CFR, Part 3280.

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PRODUCT IDENTIFICATION

Millivolt Valve Battery Pack

Control Knob

Figure 1 - Yellow Flame Vent-Free Gas Log Heater

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/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

Note: Where listed vented decorative logs are required, thermostat models are not permitted.

UNPACKING

CAUTION: Do not remove the

data plates from the grate assembly. The data plates contain important warranty and safety information.

1. Remove logs and heater base assembly from carton.

Log Set

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-red 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

Commonwealth of Massachusetts.

Note: Do not pick up heater base assem-

bly by burners. This could damage heater. Always handle base assembly by grate.

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

3. Check heater for any shipping damage. If

heater is damaged call DESA Heating, LLC

at 1-866-672-6040 for replacement parts before returning to dealer.

PRODUCT FEATURES

OpERATION

This heater is clean burning. It requires no outside venting. There is no heat loss out a vent or up a chimney. Heat is generated by

realistic, dancing yellow ames. This heater is designed for vent-free operation with ue

damper closed. It has been tested and approved to ANSI Z21.11.2 standard for unvented heaters. State and local codes in some areas prohibit the use of vent-free heaters.

123167-01D 5

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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.

Page 6

AIR FOR COMBUSTION AND VENTILATION

WARNING: This heater shall

not be installed in a room or space unless the required volume of indoor combustion air is provided by the method described in the

National Fuel Gas Code, ANSI Z223.1/NFPA 54, the International Fuel Gas Code, or applicable lo-

cal codes. 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 efcient 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

efcient, 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, replaces, 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, Air for Combustion and Ventilation.

All spaces in homes fall into one of the three

following ventilation classications:

1. Unusually Tight Construction

2. Unconned Space

3. Conned Space The information on pages 6 through 8 will help

you classify your space and provide adequate ventilation.

Unusually Tight Construction

The air that leaks around doors and windows

may provide enough fresh air for combustion

and ventilation. However, in buildings of unusually tight construction, you must provide

additional fresh air.

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Unusually tight construction is dened 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 (6x10 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 oors, 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 Determining Fresh-Air Flow For Heater Location.

Conned Space and Unconned Space

The National Fuel Gas Code ANSI Z223.1/ NFPA 54 denes a conned space as a space

whose volume is less than 50 cubic feet per 1,000 Btu/hr (4.8 m3 per kw) of the aggregate

input rating of all appliances installed in that

space and an unconned space as a space whose volume is not less than 50 cubic feet per 1,000 Btu/hr (4.8 m3 per kw) of the ag-

gregate 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 unconned space.

* Adjoining rooms are communicating only if

there are doorless passageways or ventilation grills between them.

-11

kg per pa-sec-m2) or

DETERMINING FRESH-AIR FLOW FOR FIREpLACE LOCATION

Determining if You Have a Conned or Unconned Space

Use this work sheet to determine if you have a conned or unconned space.

Space: Includes the room in which you will install replace plus any adjoining rooms with doorless passageways or ventilation grills between the rooms.

123167-01D6

Page 7

Remove Door into Adjoining

Room, Option

Ve ntilation Grills

Into Adjoining Room,

Option 2

Ve ntilation

Grills Into

Adjoining

Room,

Option 1

12"

AIR FOR COMBUSTION AND VENTILATION

Continued

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 replace __________ Btu/Hr Gas water heater* __________ Btu/Hr

Gas furnace __________ Btu/Hr Vented gas heater __________ Btu/Hr Gas replace logs __________ Btu/Hr Other gas appliances* + __________ Btu/Hr Total = __________ Btu/Hr * Do not include direct-vent gas appliances.

Direct-vent draws combustion air from the

outdoors and vents to the outdoors.

Example:

Gas water heater __________ Btu/Hr Vent-free replace + __________ Btu/Hr

Total = __________ Btu/Hr

4. Compare the maximum Btu/Hr the space

can support with the actual amount of Btu/

Hr used.

_______

support)

_______ Btu/Hr (actual amount of Btu/Hr

used)

Example: 51,200 Btu/Hr (ma ximum the

71,500 Btu/Hr (actual amount of

The space in the example is a conned 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

unconned space, remove door to adjoining

123167-01D 7

Btu/Hr (maximum the space can

space can support)

Btu/Hr used)

40,000 31,500 71,500

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room or add ventilation grills between rooms.

See Ventilation Air From Inside Building.

B. Vent room directly to the outdoors. See

Ventilation Air From Outdoors, page 8.

C. Install a lower Btu/Hr replace, if lower Btu/

Hr size makes room unconned.

If the actual Btu/Hr used is less than the maxi-

mum Btu/Hr the space can support, the space is an unconned space. You will need no additional

fresh air ventilation.

WARNING: If the area in which

the heater may be operated does not meet the required volume for indoor combustion air, combustion and ventilation air shall be provided by one of the methods described in the National Fuel

Gas Code, ANSI Z223.1/NFPA 54, the International Fuel Gas Code,

or applicable local codes.

VENTILATION AIR

Ventilation Air From Inside Building

This fresh air would come from an adjoining unconned space. When ventilating to an adjoining unconned space, you must provide two permanent openings: one within 12" of the ceiling and one within 12" of the oor 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 Air for Combustion and Ventilation for required size of ventilation

grills or ducts.

Figure 2 - Ventilation Air from Inside Building

Page 8

Outlet Air

V e ntilated Attic

Outlet A

Inlet Air

V e ntilated

Crawl Space

T o

Crawl

Space

T o Attic

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 oor. 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, 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 thermo-

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

Figure 3 - Ventilation Air from Outdoors

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 primary 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 qualied service person must install heater. Follow all local codes.

NOTICE: State or local codes

may only allow operation of this appliance in a vented conguration. Check your state or local codes.

WARNING: Before installing in a solid fuel burning replace, the chimney ue and rebox must be cleaned of soot, creosote, ashes and loose paint by a qualified chimney cleaner. Creosote will ignite if highly heated. A dirty chimney ue may create and distribute soot within the house. Inspect chimney ue and rebox for damage. If damaged, repair ue before operating heater.

WARNING: Seal any fresh air vents or ash clean-out doors

located on oor or wall of replace. If not, drafting may cause pilot outage or sooting. Use a heat-resistant sealant. Do not seal chimney ue damper.

WARNING: Never install the heater

• in a bedroom or bathroom

• in a recreational vehicle

• where curtains, furniture,

clothing or other ammable objects are less than 36" from front or 42" from top of heater. For side clearances see Figure 4, page 9

• in high trafc areas

• in windy or drafty areas

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123167-01D8

Page 9

INSTALLATION

Continued

CAUTION: This heater cre-

ates warm air currents. These

currents move heat to wall sur-

faces 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 uids, oil or kerosene lamps, etc.) in

the air exist, may discolor walls

or cause odors.

IMPORTANT: Vent-free heaters add moisture to

the air. Although this is benecial, installing heater in rooms without enough ventilation air may cause mildew to form from too much moisture. See Air for Combustion and Ventilation, page 6.

CHECK GAS TYpE

Use only 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 either natural gas or propane/LP gas but not both. Gas type is indicated on the rating plate. Field conversion is not permitted.

INSTALLATION AND CLEARANCES

(Vent-Free Operation Only)

Carefully follow the instructions below. This will ensure safe installation into a masonry, UL127-listed manufactured replace or certied vent-free rebox.

MINIMUM CLEARANCES FOR SIDE COMBUSTIBLE MATERIAL, SIDE WALL AND CEILING

A. Clearances from the side of the replace

cabinet to any combustible material and

wall should follow diagram in Figure 4.

Example: The face of a mantel, bookshelf,

etc. is made of combustible material and protrudes 3 1/2" from the wall. This com-

bustible material must be 4" from the side of the replace cabinet (see Figure 4).

Note: When installing your gas logs into

a manufactured rebox, follow rebox

manufacturer’s instructions for minimum clearances to combustible materials.

B. Clearances from the top of the replace

opening to the ceiling should not be less

than 42".

NOTICE: Manual control heaters

may be used as a vented product.

If so, you must always run heater

with chimney ue damper open. If running heater with damper open, noncombustible material above replace opening is not needed. Go to Installing Damper

Clamp Accessory for Vented Operation, page 11.

WARNING: Maintain the

Example

minimum clearances. If you can, provide greater clearances from oor, ceiling and adjoining wall.

MINIMUM FIREpLACE CLEARANCE

TO COMBUSTIBLE MATERIALS

Side Wall 16", Ceiling 42", Front 36"

LOG SIZING REQUIREMENTS

Minimum Firebox Size

Height Depth

17" 13" 28" 20.5"

*Measured at 13" Depth

123167-01D 9

Front

Width

Rear

Width*

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*Minimum 16" from Side Wall

Figure 4 - Minimum Clearance for

Combustible to Wall

Page 10

Minimum Noncombustible Material

Minimum Noncombustible Material Height

Distances to Underside of Mantel

To p of Fireplace Opening

Underside of Mantel Shelf

Mantel Shelf

12"

(A)

18" 20" 22" 24"

All minimum distances are in inches

/2"

10"

INSTALLATION

Heat Resistant Material

(A)

Continued

MINIMUM NONCOMBUSTIBLE MATERIAL CLEARANCES

If Not Using Mantel

Note: If using a mantel, proceed to If Using Mantel. If not using a mantel, follow the information below.

You must have noncombustible material(s) above the replace opening. Noncombustible materials (such as slate, marble, tile, etc.) must be at least 1/2" thick. With sheet metal,

you must have noncombustible material behind it. Noncombustible material must extend

at least 12" up (for all models). See Figure 5

for minimum clearances.

Noncombustible Material Distance (A)

12" or more Noncombustible mate-

Between 8" and 12"

Less than 8" Noncombustible material

Requirements for Safe

Installation

rial OK.

2 4 " M od e l s: I ns t al l

fireplace hood acces-

sory (GA6050, GA6052, GA6053, see Accesso- ries, page 27). 18" Model: Noncombustible material OK.

must be extended to at

least 8". See Between 8" and 12", above. If you

cannot extend material,

you must operate heater

with ue damper open and

damper clamp installed.

If Using Mantel

You must have noncombustible material(s) above the replace opening. Noncombustible materials (such as slate, marble, tile, etc.) must be at least 1/2" thick. With sheet metal, you

must have noncombustible material behind it. Noncombustible material must extend at

least 12" up. See Figures 5 and 6 for minimum

clearances.

MANTEL CLEARANCES

In addition to meeting noncombustible mate-

rial clearances, you must also meet required clearances between replace opening and

mantel shelf. If you do not meet the clearances

listed below, you will need a hood.

Determining Minimum Mantel Clearance

If you meet minimum clearance between mantel shelf and top of replace opening, a

hood is not required (see Figure 6).

NOTICE: Surface temperatures of adjacent walls and mantels become hot during operation. Walls and mantels above the rebox may become hot to the touch. If installed properly, these temperatures meet the requirement of the national product standard.

Follow all minimum clearances

shown in this manual.

Figure 5 - Heat Resistant Material (Slate,

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Marble, Tile, etc.) Above Fireplace

Figure 6 - Minimum Mantel Clearances

Without Using Hood

123167-01D10

Page 11

INSTALLATION

14" Min.

Combustible Material

Noncombustible Material

Hearth

5" Min.

Combustible Material

Continued

NOTICE: If your installation does not meet the minimum clearances shown, you must do one

of the following:

• raise the mantel to an accept-

able height

• remove the mantel

FLOOR CLEARANCES

A. If installing appliance on the oor level,

you must maintain the minimum distance

of 14" to combustibles (see Figure 7).

B. If combustible materials are less than 14"

to the replace, you must install appliance at least 5" above the combustible ooring

(see Figure 8).

Figure 7 - Minimum Fireplace Clearances

If Installed at Floor Level

INSTALLING DAMpER CLAMp ACCESSORY FOR VENTED OpERATION

Note: When used as a vented heater, appliance must be installed only in a solid-fuel burning replace with a working ue and constructed of noncombustible material.

For Massachusetts Residents Only: Installation of this gas log set as a vented appliance in the Commonwealth of Massachusetts requires the damper be permanently removed

or welded in the fully open position. If your heater is a manually-controlled model,

you may use this heater as a vented product. There are three reasons for operating your heater in the vented mode.

1. The replace does not meet the clearance

to combustibles requirements for ventfree operation.

2. State or local codes do not permit ventfree operation.

3. You prefer vented operation.

If reasons number 1 or 2 above apply to you, you must permanently open chimney ue damper. You must install the damper clamp accessory (to order, see Accessories, page

28). This will insure vented operation (see

Figure 9). The damper clamp will keep damper

open. Installation instructions are included

with clamp accessory.

Damper Clamp

Damper

Damper Clamp

Figure 8 - Minimum Fireplace Clearances

Above Combustible Flooring

123167-01D 11

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Damper

Masonry Fireplace

Figure 9 - Attaching Damper Clamp

Manufactured Fireplace

Damper

Page 12

INSTALLATION

Continued

See chart below for minimum permanent ue

opening you must provide. Attach damper

clamp so the minimum permanent ue opening will be maintained at all times.

Area of Various Standard Round Flues

Diameter Area

5" 20 sq. inches 6" 29 sq. inches 7" 39 sq. inches 8" 51 sq. inches

Chimney Height Minimum permanent

Flue Opening

6' to 15' 39 sq. inches

15' to 30' 29 sq. inches

INSTALLING HEATER BASE ASSEMBLY

CAUTION: Do not remove the

data plates attached to the heater base assembly. The data plates contain important warranty and safety information.

WARNING: You must secure

this heater to replace oor. If

not, heater will move when you

adjust controls. Moving heater may cause a gas leak.

WARNING: If installing in a sunken replace, special care is needed. You must raise the replace oor to allow access to heater control panel. This will insure adequate air ow and guard against sooting and controls being damaged. Raise replace oor with noncombustible material. Make sure material is secure.

CAUTION: Do not pick up heater base assembly by the burner. This could damage heater. Only handle base assembly by grates.

IMPORTANT: Make sure heater burners are

level. If heater is not level, heater will not work properly.

Installation Items Needed

• hardware package (provided with heater)

• approved exible gas hose (not provided) (if allowed by local codes)

• sealant (resistant to propane/LP gas, not

provided)

• electric drill with 3/16" drill bit

• athead screwdriver

1. Apply pipe joint sealant lightly to male

threads of tting to be threaded into gas regulator. Connect approved exible gas

hose to gas regulator of heater (see Fig-

ure 11, page 13). IMPORTANT: Hold gas regulator with

wrench when connecting exible gas hose

2. Lo cate masonry screws in hardware

package.

3. Position heater base assembly in re-

place.

4. Place logs in their proper position on heater

base (see Installing Logs, page 17).

5. Center heater base and logs front-to-front

and side-to-side in replace.

6. Carefully remove logs without moving

heater base.

Fitting

Flexible Gas Hose

(if allowed by local codes)

Figure 10 - Attaching Flexible Gas Hose

to Heater Gas Regulator

Heater Gas Regulator

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123167-01D12

Page 13

INSTALLATION

Continued

7. Mark screw locations through holes in

mounting brackets (see Figure 11). If

installing in a brick-bottom replace, mark screw locations in mortar joint of bricks.

8. Remove heater base from replace.

9. Drill holes at marked locations using 3/16"

drill bit.

10. Attach base assembly to replace oor using two masonry screws (in hardware

package) (see Figure 11).

Masonry

Screw

Mounting Bracket

Figure 11 - Attaching Base Assembly to

Fireplace Floor

CONNECTING TO GAS SUppLY

WARNING: This appliance requires a 1/2" NPT (National Pipe Thread) inlet connection to the pressure regulator.

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

CAUTION: Never connect

propane/LP heater directly to the propane/LP supply. Propane/LP heaters require an external regulator (not supplied). Install the external regulator between the heater and propane/LP supply.

WARNING: For natural gas

units, never connect 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 (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

• two (2) D size batteries * A CSA design-certied equipment shutoff

valve with 1/8" NPT tap is an acceptable al-

ternative to test gauge connection. Purchase

the optional CSA design-certied equipment

shutoff valve from your dealer.

For propane/LP gas, installer must supply an external regulator. External regulator will reduce incoming gas pressure. You must reduce incoming gas pressure to between 11" and 14" of water. If you do not reduce incoming gas pressure, heater regulator damage could occur. Install external regulator with vent pointing down as shown in Figure 12. Pointing vent down protects it from freezing

rain or sleet.

Propane/LP Supply Tank

External Regulator

with Vent

Pointing

Down

Figure 12 - External Regulator With Vent

Pointing Down

123167-01D 13

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Page 14

INSTALLATION

Continued

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 13).

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

Check your building codes for any special requirements for locating equipment shutoff

valve to replaces.

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.

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

We recommend that you install sediment trap

in supply line as shown in Figure 13. 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 ttings.

Natural

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

Figure 13 - Gas Connection

* Purchase optional CSA design-certied

equipment shutoff valve from your dealer. ** Minimum inlet pressure for purpose of input

adjustment.

CSA Design-Certied

Equipment Shutoff Valve

With 1/8" NPT Tap*

3" Min.

Tee Cap Pipe Joint Nipple

Sediment Trap

Gas Regulator

Approved Flexible Gas Hose (if

allowed by

local codes)

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 ame to check for a leak. Apply a commercial leak detection solution to all joints. Bubbles forming show a leak. Correct all leaks at once.

CAUTION: For propane/LP units, make sure external regulator has been installed between propane/LP supply and heater. See guidelines under Connect- ing to Gas Supply, page 13.

www.desatech.com

123167-01D14

Page 15

INSTALLATION

Continued

pRESSURE TESTING GAS SUppLY pIpING SYSTEM

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

1. Disconnect appliance with its appliance

main gas valve (control valve) and equipment shutoff valve from gas supply piping. 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 commercial leak detection

solution to all joints. Bubbles forming show

a leak.

5. Correct all leaks at once.

6. Reconnect heater and equipment shutoff valve to gas supply. Check reconnected

ttings for leaks.

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

1. Close equipment shutoff valve (see Figure 14).

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 (natural gas) or propane/LP supply to equipment shutoff valve (see Figure 15 or Figure 16). Apply a commercial leak detection solu-

tion to all joints. Bubbles forming show a

leak.

4. Correct all leaks at once.

Equipment Shutoff Valve

Figure 14 - Equipment Shutoff Valve

Open

Closed

pRESSURE TESTING HEATER GAS CONNECTIONS

1. Open equipment shutoff valve (see Figure 14).

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 gas meter (natural gas) or propane/LP supply to equipment shutoff valve (see Figure 15 or Figure 16). Apply a commercial leak detection solu-

tion to all joints. Bubbles forming show a

leak.

5. Correct all leaks at once.

6. Light heater (see Operation, page 18. Check all other internal joints for leaks.

7. Turn off heater (see To Turn Off Gas to Appliance, page 20.

Propane/LP Supply Tank

Figure 15 - Checking Gas Joints

Equipment Shutoff Valve

Gas Meter

Figure 16 - Checking Gas Joints

Equipment Shutoff Valve

Control Valve Location

(Propane/LP Gas Only)

Control Valve Location

(Natural Gas Only)

123167-01D 15

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Page 16

INSTALLATION

Continued

INSTALLING OpTIONAL REMOTE ACCESSORIES

Installing Remote Receiver

Remote control accessories are available separately (see Accessories, page 28).

1. If unit is already installed in replace, continue with these instructions. If unit has not been installed in replace, go to

step 6 and continue installation of remote accessory.

WARNING: Turn off heater

and let cool before handling any part of heater. Make sure gas is turned off to unit.

2. Carefully remove logs and set aside.

3. Locate mounting screws on sides of heater base assembly and remove screws. Set screws aside for reinstallation.

4. Disconnect gas line from heater base as

shown in Figure 10, page 12.

WARNING: A qualied service person must connect and disconnect gas to heater. Follow all local codes.

5. Remove heater base from replace.

6. Disconnect switch wires from control valve

(see Figure 18).

7. Remove screws and switch plate (see

Figure 17). Save items removed.

8. Inst all remote receiv er into rec eiver bracket using pads and push button clips

provided with receiver (see Figure 17).

Battery Clip

Pad

Remote Receiver

Phillips Screws

Figure 17 - Installing Remote Receiver

Switch

Plate

Push Button

Clips Remote Receiver Bracket

and Bracket

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9. Connect remote wires to control valve as shown in Figure 18.

Note: Make sure excess wire does not

interfere with burner or pilot.

10. If heater was removed from replace before installation of remote accessory, see Installing Heater Base Assembly, page 12, to reinstall heater into replace. Test gas

connections for leaks (see Checking Gas Connections, page 14).

11. If logs were removed from heater to install remote accessory, replace logs (see Installing Logs, page 17).

Switch or remote

Control Valve

Figure 18 - Remote Wiring

Installing Batteries for Remote Receiver

and Hand Held Remote Control

Two 9-volt alkaline batteries (not included) are required to operate this heater with the wireless hand-held remote control set. One

battery must be installed in the receiver and one in the hand-held remote control unit.

Note: Only use alkaline batteries.

Installing 9-Volt Battery in Receiver

1. Locate back of receiver behind receiver bracket mounted on base assembly.

2. Locate the battery clip mounted on the back of the receiver (see Figure 17).

3. Slide a 9-volt battery through the clip.

4. Attach the terminal wires to the battery.

Installing 9-Volt Battery (Not Included) in

Hand-Held Remote Control Unit

1. Remove battery cover on back of remote

control unit (see Figure 19, page 17).

2. Attach terminal wires to the battery. Place

battery into the battery housing.

3. Replace battery cover onto remote control unit.

(not shown)

Battery Holder

123167-01D16

Page 17

INSTALLATION

Continued

Battery Cover

Terminal Wires

9-Volt Battery

Figure 19 - Installing Battery in Hand-Held

MILLIVOLT VALVE BATTERY pACK

Battery Installation

Batteries must be installed before millivolt

valve will operate.

1. Locate battery pack on left side of unit (see Figure 20).

2. Install 2 D-cell batteries (not included)

into battery housing as shown in Figure

20. Pay close attention to positive (+) and negative (-) markings on battery housing.

Battery Pack

Positive

Remote Control Unit

Battery Housing

Remote Control Unit

Left Side of Unit

INSTALLING LOGS

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

CAUTION: After installa-

tion and periodically thereafter, check to ensure that no ame comes in contact with any log. With the heater set to High, check to see if ames contact any log. If so, reposition logs according to the log installation instructions in this manual. Flames contacting logs will create soot.

It is very important to install these logs exactly as instructed. Do not modify logs. Only use

logs supplied with heater.

1. Place rear log (#1) onto base. Holes in bottom of log must seat over pins on base

as shown in Figure 21.

2. Place middle log (#2) onto base. Holes in bottom of log must seat over pins on base

as shown in Figure 21.

Middle Log

Rear Log

D Batteries

Figure 20 - Installing Millivolt Valve

Battery Pack Batteries

Battery Replacement

1. Shut unit off by turning control knob to the OFF position.

2. Make sure unit has been off for at least 5 minutes.

3. Press switch to the OFF position.

4. Replace with new batteries and wait 5 seconds, then press switch to the ON

position.

5. Follow lighting instructions on page 19 to

turn unit back on.

123167-01D 17

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Pin for Hole in Bottom of Log

Burner

Figure 21 - Installing Rear and Middle Logs

Page 18

INSTALLATION

Continued

3. Place front log (#3) onto grate as shown

in Figure 22.

4. Place left top log (#4) as shown in Figure

23. Match square peg on top of rear log

(#1) with square hole on bottom of left top

Front Log

log (#4). Match round peg on top of middle

log (#2) with round hole on bottom of left

top log (#4).

5. Place right top log (#5) as shown in Figure

23. Match square peg on top of rear log

(#1) with square hole on bottom of right

top log (#5). Match round peg on top of

front log (#3) with round hole on bottom

of right top log (#5).

Left Top Log

Round Peg on Middle Log

Right Top Log

Square Peg on Rear Log

Grate

Figure 22 - Installing Front Log

OPERATION

FOR YOUR SAFETY

READ BEFORE LIGHTING

WARNING: If you do not fol-

low these instructions exactly,

a re or explosion may result causing property damage, personal injury or loss of life.

A. This appliance has a pilot which must

be ligh ted by hand. W hen lightin g the pilot, follow these instructions exactly.

B. BEFORE LIGHTING smell all around

the appliance area for gas. Be sure to smell next to the oor because some gas is heavier than air and will settle on the oor.

Round Peg on Front Log

Figure 23 - Installing Left and Right Logs

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 re 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 qualied service technician or gas supplier. Force or attempted repair may result in a re or explosion.

D. Do not use this appliance if any part

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

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123167-01D18

Page 19

OPERATION

PILOT

OFF

Continued

LIGHTING

INSTRUCTIONS

WARNING

• If replace has glass doors, never operate this heater with glass doors closed. If you op-

erate heater with doors closed,

heat buildup inside replace will cause glass to burst. Make sure there are no obstructions across openings of replace.

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

NOTICE: During initial operation of new heater, burning logs will give off a paper-burning smell. Orange ame will also be present. Open damper or window to vent smell. This will only last a few hours.

Note: Home owners generally prefer to operate their heater with chimney damper closed. This will put all of the heat into room. However, there

may be times you will desire full ames of HI heat setting but will nd heat output excessive.

You can open chimney damper (if you have one) fully or partially to release some heat.

WARNING: Damper handle will be hot if heater has been running.

1. STOP! Read the safety information on page 18.

2. Make sure equipment shutoff valve is fully open.

3. Press in and turn control knob clockwise

4. Wait ve (5) minutes to clear out any gas.

123167-01D 19

to the OFF position.

Then smell for gas, including near the oor. If you smell gas, STOP! Follow “B”

in the safety information on page 18. If

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

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5. Press in control knob and turn counter-

clockwise to the PILOT position (see Figure 24). The ignitor will spark once. Keep control knob pressed in for 5

seconds. If control knob does not pop up

when released, contact a qualied service

person or gas supplier for repairs.

Note: You may be running this heater

for the rst 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. Turn control knob clockwise to

OFF position. Press in control knob and

turn counterclockwise to PILOT position. This will light pilot. Pilot is attached to rear of burner. If needed, repeat

this process until pilot lights.

Note: If pilot does not stay lit, contact a

qualied 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 20.

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

release control knob.

Note: If pilot goes out, repeat steps 3

through 7.

• If control knob does not pop out when

released, contact a qualified service

person or gas supplier for repairs.

8. Slightly press and turn control knob counterclockwise to desired heating level. The burner should light. Set control knob to HI or LO.

WARNING: Do not operate heater between PILOT and HIGH positions.

9. To leave pilot lit and shut off burners only, turn control knob clockwise to the

PILOT position.

Control Knob

Figure 24 - Control Knob and Ignitor

Button Location

Page 20

OPERATION

ON OFF REMOTE

PILOT

OFF

Continued

CAUTION: Do not try to ad-

just heating levels by using the equipment shutoff valve.

If Using Optional Remote Control

10. Wait one minute and switch selector switch

to the ON position to light burners (see Figure 26).

Note: AU TO is only functi onal when

us in g HRC1 00 or HRC200 optiona l accessories.

11. Set control knob to HI or LO.

12. To leave pilot lit and shut off burners only

either turn control knob clockwise to the PILOT position or use remote control manual OFF button.

WARNING: Make sure the se-

lector switch is in the OFF position

when you are away from home for

long periods of time. Heater will

come on automatically with selec-

tor switch in the ON position.

Ignitor Electrode

Pilot Burner

Thermocouple

Figure 25 - Pilot

MANUAL LIGHTING

pROCEDURE

1. Follow steps 1 through 5 under Lighting Instructions beginning on page 19.

2. Press 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, page 19.

OpTIONAL HAND-HELD

REMOTE OpERATION

Note: All remote control accessories must be purchased separately (see Accessories, page 28). Follow instructions included with the remote control.

NOTICE: You must light the pilot before using the hand-held remote control unit. See Lighting Instructions on page 19.

After lighting, let pilot ame burn for about

one minute. Turn control knob to HI or LO.

Slide selector switch to REMOTE position

(see Figure 26).

Note: Burner may light if hand-held remote was on when selector switch was last turned off. You can now turn burner on and off with hand-held remote control unit.

IMPORTANT: Do not leave selector switch in

REMOTE or ON position when pilot is not lit. This will drain battery.

ON/OFF SERIES (MODEL HRC100)

Hold control button on hand-held remote until burner turns on. Hold control button again until burner turns off (see Figure 27).

Figure 26 - Setting Selector Switch and

Control Knob for Remote Operation

TO TURN OFF GAS

TO AppLIANCE

1. Turn control knob clockwise to OFF

position.

2. Close equipment shutoff valve (see Figure

14, page 15).

Indicator Light

Figure 27 - On/Off Hand-Held Remote

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Control Button

Control Unit

123167-01D20

Page 21

LOCK

MANU AUTO

ºC/ºF

TEMP

POWER

ROOM TEMP

SET TEMP

AUTO

TO LOCK press both buttons on hand-held

remote control until light stops ashing. Handheld remote control is now locked. If re is on it will be turned off automatically. In locked state, light will not light up when any button

is pressed. TO UNLOCK press both buttons together

on hand-held r emote c on tr ol until light

stops flashing. Hand-held remote is now

unlocked.

THERMOSTAT SERIES (MODEL HRC200)

Hand-held remote can be operated using either manual mode (MANU) or thermostatic mode (AUTO) (see Figure 28). To select Fahr-

enheit/Centigrade mode display, carefully press ˚C/˚F mode button with end of a paper

clip or similar blunt object.

Manual Mode

1. Press POWER and LOCK buttons togeth-

er to turn on hand-held remote control.

2. Press MANU button to turn on replace.

3. Press POWER and LOCK buttons together to turn off replace.

Digital Display Shows

Temperature and Settings

°C/°F Mode Button

Remote Control Unit

Increases or Decreases Room Temperature in AUTO Mode

Locks System to Prevent Accidental Ignition

Turns Burners On or Off

Figure 28 - Thermostat Hand-Held

OPERATION

Continued

Auto (Thermostatic) Mode

1. Press POWER and LOCK buttons togeth-

2. Press AUTO button to select this mode.

3. Set desired room temperature by pressing

4. Press POWER and LOCK buttons to-

Note: Do not leave hand-held remote in AUTO

mode close to replace. Radiant heat from replace will turn off replace. Ideally, place

hand-held remote in center of the room facing

towards replace.

Note: Do not hold hand-held remote for a long time. Body temperature will affect its operation in AUTO mode.

Safety Features

When away from home for an extended period

of time or as a child safety feature to prevent

accidental ignition of replace, receiver ON/ OFF /REMOTE switch should be in OFF

position.

Auto Shutoff Feature

1. If average room temperature reaches a

Turns Hand-Held Remote On or Off and

Allows You

to Choose the Manual Setting

Selects AUTO Mode

2. Receiver continuously receives signals

Key pad Lock Feature

This feature allows the user to lock/unlock the

keypad on the hand-held remote in the MANU or AUTO mode to prevent inadvertent operation (i.e. children operating the hand-held

remote control, etc.). The keypad is locked in either on or off. Press the POWER and LOCK

buttons together to turn the unit on or off.

er to turn on hand-held remote control.

TEMP + or - buttons.

gether to turn off replace

range of 82° F (28° C) to 92° F (33° C), hand-held remote control will perform a safety override and shut replace off. This

feature is not available in MANU mode.

from hand-held remote to control room tem-

perature. If hand-held remote is misplaced,

obstructed or for any reason cannot transmit

to receiver, receiver will shut off replace. This will occur in 8 or more minutes depend-

ing upon location of remote transmitter and strength of batteries.

123167-01D 21

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Page 22

INSPECTING BURNERS

Check pilot ame pattern and burner ame

patterns often.

pILOT FLAME pATTERN

Figure 30 shows a correct pilot ame pattern. Figure 31 shows an incorrect pilot ame pattern. Incorrect pilot ame is not touching thermocouple. This will cause the thermocouple to cool. When thermocouple cools, heater will shut down.

If pilot ame pattern is incorrect, as shown

in Figure 30

• turn heater off (see To Turn Off Gas to

Appliance, page 20

• see Troubleshooting, page 24

Note: Pilot ame on natural gas units will have a slight curve, but ame should be blue and

have no yellow or orange color.

Pilot Burner

Thermocouple

Figure 29 - Correct Pilot Flame Pattern

Thermocouple

Pilot Burner

Figure 30 - Incorrect Pilot Flame Pattern

BURNER pRIMARY AIR HOLES

Air is drawn into burner through holes in tting at entrance to burner. These holes may

become blocked with dust or lint. Periodically

inspect these holes for any blockage and

clean as necessary. Blocked air holes will

create soot.

MAIN BURNER

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

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 qualied service person. Heater may need more frequent cleaning 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.

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ODS/pILOT AND BURNER

Use a vacuum cleaner or small, soft bristled

brush to clean.

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 ame. Keep these holes clear of dust, dirt and lint. 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 qualied service person.

We also recommend that you keep 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. If

using compressed air in a can, please follow directions on can. If you don’t follow directions on can, you could damage pilot assembly.

123167-01D22

Page 23

CLEANING AND MAINTENANCE

Continued

1. Shut off unit, including pilot. Allow 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 31).

3. Blow air through ports/slots and holes in

burner.

4. Check injector holder located at end of 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 primary air holes on injector

holder.

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

and 4.

Clean pilot assembly also. A yellow tip on pilot ame indicates dust and dirt in pilot assembly. There is a small pilot air inlet hole about 2" from where pilot ame comes out of pilot assembly (see Figure 32). With unit off, lightly blow air through air inlet hole. You may blow through a drinking straw if compressed air is

not available.

Injector Holder (May Be Brass or Aluminum Depending on Model)

Burner Tube

Primary Air Inlet Holes (Shape of Holes May Vary by Model)

Figure 31 - Injector Holder On Outlet

Burner Tube

Pilot Assembly

Pilot Air Inlet Hole

Figure 32 - Pilot Inlet Air Hole

LOGS

• If you remove logs for cleaning, refer to Installing Logs, page 17, to properly replace logs.

• Replace log(s) if broken or chipped (dimesized or larger).

BURNER pRIMARY AIR HOLES

Air is drawn into burner through the 8 holes in brass tting at entrance to burner. These holes may become blocked with dust or lint.

Periodically inspect these holes for any blockage and clean as necessary. Blocked air holes

will create soot.

MAIN BURNER

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

VENTING

Once every year a qualied agency or certied chimney sweep should examine and clean the venting system of the replace.

SPECIFICATIONS

HD18PRA, HD24PRA

• Rating (Variable): 20,000/36,000 Btu/Hr

• Type Gas: Propane/LP

• Ignition: Piezo

• Pressure Manifold: 10.0" W.C.

• Inlet Gas Pressure (in. of water): Maximum 14" W.C., Minimum* 11" W.C.

• Shipping Weight: 27 lbs.

* For input adjustment

123167-01D 23

www.desatech.com

HD18NRA, HD24NRA

• Rating (Variable): 23,000/37,000 Btu/Hr

• Type Gas : Natural Gas

• Ignition: Piezo

• Pressure Manifold: 4.5" W.C.

• Inlet Gas Pressure (in. of water):

Maximum 10.5" W.C., Minimum* 5" W.C.

• Shipping Weight: 29 lbs.

* For input adjustment

Page 24

TROUBLESHOOTING

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

Only a qualied 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.

OBSERVED pROBLEM

When control knob is pressed in and turned to PILOT, there is not spark at ODS/pilot

pOSSIBLE CAUSE

1. Ignitor electrode not connected to ignitor cable

2. Ignitor cable pinched or

wet

3. Broken ignitor cable

4. Bad piezo ignitor

5. Ignitor electrode broken

6. Ignitor electrode positioned

wrong

REMEDY

1. Reconnect ignitor cable

2. Free ignitor cable if pinched by a ny meta l or tubing.

Keep ignitor cable dry

3. Replace valve

4. Replace valve

5. Replace valve

6. Replace valve

When control knob is pressed in and turned to PILOT, there is spark at ODS/pilot but no ignition

1. Gas supply turned off or equipmen t 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 in-

stalled

5. Depleted gas supply (propane/LP only)

6. ODS/pilot is clogged

7. Gas regula tor settin g is not correct

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. Co nti nue hol din g d own

control knob. Repeat igniting oper ation until air is removed

5. Contact local propane/LP gas company

6. Clean ODS/pilot (see Clean- ing and Maintenance, page

22) or replace ODS/pilot assembly

7. Replace gas regulator

www.desatech.com

123167-01D24

Page 25

OBSERVED pROBLEM

ODS/pilot lights but flame

goes out when control knob

is released

TROUBLESHOOTING

Continued

pOSSIBLE CAUSE

1. Con t r ol k n ob no t ful l y pressed in

2. Control knob not pressed in long enough

3. Safety interlock system has been triggered

4. Equipment shutoff valve not fully open

5. Pilot flame not touching

thermocouple, which allows thermocouple to cool, causing pilot ame 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

6. Thermocouple connection loose at control valve

7. Thermocouple damaged

8. Control valve damaged

REMEDY

1. Press in control knob fully

2. After ODS/pilot lights, keep

control knob pressed in 30 seconds

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

4. Fully open equipment shutoff valve

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

B) Clean ODS/pilot (see

Cleaning and Maintenance,

page 22) or replace ODS/ pilot assembly

6. Hand tighten until snug,

then tighten 1/4 turn more

7. Replace pilot assembly

8. Replace control valve

Burner does not light after ODS/pilot is lit

Delayed ignition of burner

Burner backring during combustion

123167-01D 25

1. Batteries not secure in battery pack

2. Burner orice clogged

3. Inlet gas pressure is too

low

4. Batteries are low in millivolt

battery pack

1. Manifold pressure is too

low

2. Burner orice clogged

1. Burner orice is clogged or

damaged

2. Damaged burner

3. Gas regulator defective

www.desatech.com

1. Check to see that battery contacts are touching metal spring and metal plate in plastic battery pack

2. Clean burner (see Cleaning

and Maintenance, page 22) or replace burner orice

3. Contact loca l natural or propane/LP gas company

4. Change batteries (see Mil-

livolt Valve Battery Pack,

page 17)

1. Contact loca l natural or propane/LP gas company

2. Clean burner (see Cleaning

and Maintenance, page 22) or replace burner orice

1. Clean burner (see Cleaning and Maintenance, page 22)

or replace burner orice

2. Replace damaged burner

3. Replace gas regulator

Page 26

OBSERVED pROBLEM

Slight smoke or odor during initial operation

TROUBLESHOOTING

Continued

pOSSIBLE CAUSE

1. Not enough air

2. Gas regulator defective

3. Residues from manufacturing processes and logs curing

REMEDY

1. Check burner for dirt and

de b ris . If fo u nd, cl e an

burner (see Cleaning and Maintenance, page 22)

2. Replace gas regulator

3. Problem will stop after a few

hours of operation

Moisture/condensation no-

ticed on windows

Heater produces a whistling noise when burner is lit

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

Remote does not function

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

1. Not enough combustion/ ventilation air

1. Turning control knob to HI

positio n whe n burner is

cold

2. Air in gas line

3. Air passageways on heater

blocked

4. Dirty or partially clogged

burner orice

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

1. Battery not installed. Bat-

tery power is low

2. Log in front of receiver

1. Met al exp a ndi ng whi l e heating or contracting while

cooling

1. Refer to Air for Combustion and Ventilation requirements (page 6)

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 or propane/LP gas company

3. Observe minimum installat i on clea r anc e s (s ee page 9)

4. Clean burner (see Cleaning

and Maintenance, page 22) or replace burner orice

1. Turn heater off when using furniture polish, wax,

carpet cleaners or similar products

1. Replace 9 -volt batteri es in receiver and hand-held remote

2. Move log left or right of clear

view of receiver

1. This is normal with most

heaters. If noise is excessive, contact qualied service person

www.desatech.com

123167-01D26

Page 27

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 re department.

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.

OBSERVED pROBLEM

Heater produces unwanted

odors

Heater shuts off in use (ODS operates)

Gas odor even when control

knob is in OFF position

Gas odor during combustion

pOSSIBLE CAUSE

1. Heater burning vapors from

paint , hair spra y, glue s, cleaners, chemicals, new carpet, etc. (See IMPOR-

TANT statement above)

2. Low fuel supply (propane/

LP only)

3. Gas leak. See Warning

statement above

1. No t eno ug h fresh air i s available

2. Low line pressure

3. O D S / p i l o t i s p a rtially clogged

4. Batteries are low in millivolt

battery pack

1. Gas leak. See Warning

statement above

2. Control valve defective

1. Forei gn matter b etween

control valve and burner

2. Gas leak. See Warning

statement above

REMEDY

1. Open window and venti-

late room. Stop using odor

ca using prod ucts wh ile

heater is running

2. Rell supply tank (propane/

LP only)

3. Locate and correct all leaks (see Checking Gas Con-

nections, page 14)

1. Open window and/or door

for ventilation

2. Contact loca l natural or propane/LP gas company

3. C lean O D S / pilot ( s e e

Cleaning and Maintenance,

page 22)

4. Change batteries (see Mil-

livolt Valve Battery Pack,

page 17)

1. Locate and correct all leaks (see Checking Gas Con- nections, page 14)

2. Replace control valve

1. Take apart gas tubing and remove foreign matter

2. Locate and correct all leaks (see Checking Gas Con- nections, page 14)

123167-01D 27

www.desatech.com

Page 28

TECHNICAL SERVICE

You may have further questions about installation, operation or troubleshooting. If so, contact DESA Heating, LLC at 1-866-672-6040.

When calling please have your model and serial numbers of your heater ready.

You can also visit DESA Heating, LLC’s 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 can’t supply original replacement part(s), call DESA Heating, LLC at 1-866-672-6040.

When calling DESA Heating, LLC, 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

SERVICE HINTS

When Gas pressure Is Too Low

• pilot will not stay lit

• burners will have delayed ignition

• heater will not produce specied heat

• propane/LP gas supply may be low You may feel your gas pressure is too low. If

so, contact your local natural or propane/LP

gas supplier.

Usually, we will ask you to return the 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 page 29) or call DESA Heating, LLC at

1-866-672-6040 for referral information. A list

of authorized dealers can be found by visiting

www.desatech.com.

When calling DESA Heating, LLC, have

ready

• model number of your heater

• the replacement part number

ACCESSORIES

Purc ha se these accessories from you r local dealer. If they can not supply these

accessories, either contact your nearest Parts Central or call DESA Heating, LLC at 1-866-672-6040 for information. You can also write to the address listed on the back page

of this manual.

DAMPER CLAMP - GA6080

For all models. Permanently opens chimney

ue damper for vented operation.

LAVA ROCK - GA6060

For all models. Order when additional rock

is desired.

www.desatech.com

RECEIVER AND HAND-HELD THERMOSTAT REMOTE CONTROL

KIT - HRC200

For all models. Allows replace to be operated

in a manually or thermostatically controlled

mode. You can turn replace on and off without

ever leaving the comfort of your easy chair. A

wall-mount docking station is included.

RECEIVER AND HAND-HELD

REMOTE CONTROL KIT - HRC100

For all models. Allows replace to be turned

on and off by using a hand-held remote control.

A wall-mount docking station is included.

123167-01D28

Page 29

PARTS CENTRAL

These Parts Centrals are privately owned businesses. They have agreed to support our

customer’s needs by providing original replacement parts and accessories.

Those Heater Guys

255 E. Stowell Street Upland, CA 91786

909-928-3011

Tool & Equipment, Co.

5 Manila Ave

Hamden, CT 06514

1-800-397-7553 203-248-7553

Portable Heater Parts

342 N. County Rd. 400 East

Valparaiso, IN 46383

All States 219-462-7441 1-888-619-7060 sales@portableheaterparts.com techservice@portableheaterparts.com

FBD

1349 Adams Street

Bowling Green, KY 42103

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

616-791-0505 1-800-446-1446 Fax: 616-791-8270

www.nbmc.com

Washer Equipment Co.

1715 Main Street

Kansas City, MO 64108 KS, MO, AR

816-842-3911

www.washerparts.com

East Coast Energy Products

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

215-795-0400 800-325-4828

Laporte’s Parts & Service

2444 N. 5th Street

Hartsville, SC 29550

843-332-0191 Parts Department

Cans Unlimited, Inc.

P.O. Box 645

Taylor, SC 29687-0013

All States 803-879-3009 1-800-845-5301 cuisales@aol.com

123167-01D 29

www.desatech.com

Page 30

PARTS

21e

21c

21a

21d

21b

MODELS HD18NRA, HD18PRA, HD24NRA AND HD24PRA

www.desatech.com

123167-01D30

Page 31

PARTS

REMOTE READY MODELS

This list contains replaceable parts used in your heater. When ordering parts, follow the

instructions listed under Replacement Parts on page 28 of this manual.

KEY NO. PART NO. DESCRIpTION QTY.

1 ** Log Base • • • • 1 2 120783-01 Cast Iron Grate • • • • 1 3 120786-01 Yellow Flame Burner • • 1

120786-02 Yellow Flame Burner • • 1

4 120517-03 Remote and Regulator

Bracket

5 120630-05 ODS Pilot, NG • • 1

120630-02 ODS Pilot, LP • • 1

6 098867-20 Gas Regulator, NG • • 1

098867-21 Gas Regulator, LP • • 1

7 122142-01 Manual Valve with Ignitor, NG • • 1

122142-02 Manual Valve with Ignitor, LP • • 1

8 123483-02 Inlet Tube Assembly • • 1

122151-02 Burner Inlet Tube • • 1 9 103284-10 Wire Harness • • • • 1 10 103587-02SA Switch Plate • • • • 1 11 099056-16 Injector • • 1

099056-31 Injector • • 1 12 122190-01DD Remote Sensor Bracket • • • • 1 13 099387-08 Pilot Tube • • • • 1 14 122145-01 Battery Holder • • • • 1 15 098354-01 Control Knob • • • • 1 16 M11084-26 Screw, HWH AB 10-16 x 0.38 • • • • 7 17 098304-01 Screw, PPH AB 10-16 x 0.38 • • • • 2 18 098304-03 Screw, PPH AB 8-18 x 0.38 • • • • 2 19 098249-01 ODS Nut • • • • 2 20 098303-02 Screw, HWH AB 6-20 x 0.31 • • • • 2 21 123189-01 18" Log Set • • 1

123189-02 24" Log Set • • 1 22a 123190-01 Rear Log • • 1

123190-06 Rear Log • • 1 22b 123190-02 Middle Log • • 1

123190-07 Middle Log • • 1 22c 123190-03 Front Log • • 1

123190-08 Front Log • • 1 22d 123190-04 Top Right Log • • 1

123190-09 Top Right Log • • 1 22e 123190-10 Top Left Log • • 1

123190-05 Top Left Log • • 1 23 122568-01 Screw, #12 x 1.25 Hex Head • • • • 4 24 122569-01 Washer • • • • 4 25 099998-01 ON/OFF/AUTO Switch • • • • 1

100563-01 Warning Plate • • • • 1

pARTS AVAILABLE — NOT SHOWN

101055-08 Lighting Instructions Plate • • • • 1

100639-01 Caution Decal • • • • 1

101137-02 Hardware Kit • • • • 1

GA6060 Lava Rock • • • • 1

** Not a eld replaceable part.

123167-01D 31

www.desatech.com

HD24NRA

HD18NRA

HD18PRA

HD24PRA

• • • • 1

Page 32

123167 01

WARRANTY

KEEP THIS WARRANTY

Model (

located on product or identication tag

Serial No. (

located on product or identication tag

Date Purchased __________________________

Keep receipt for warranty verication.

DESA HEATING, LLC LIMITED WARRANTIES

Standard Warranty: DESA Heating, LLC warrants this new product and any parts thereof to be free from defects in material and workmanship for a period of one (1) year from the date of rst purchase from an authorized dealer provided the product has been installed, maintained and operated in accordance with DESA Heating, LLC’s warnings and instructions.

For products purchased for commercial, industrial or rental usage, this warranty is limited to 90 days from the date of rst purchase.

Factory Reconditioned products

Limited Warranty: DESA Heating, LLC warrants factory reconditioned products and any parts thereof

to be free from defects in material and workmanship for 30 days from the date of rst purchase from an authorized dealer provided the product has been installed, maintained and operated in accordance with DESA Heating, LLC’s warnings and instructions.

Terms Common to All Warranties

The following terms apply to all of the above warranties:

Always specify model number and serial number when contacting the manufacturer. To make a claim under this warranty the bill of sale or other proof of purchase must be presented.

This warranty is extended only to the original retail purchaser when purchased from an authorized dealer, and only when installed by a qualied installer in accordance with all local codes and instructions furnished with this product.

This warranty covers the cost of part(s) required to restore this product to proper operating condition and an allowance for labor when provided by a DESA Heating, LLC Authorized Service Center or a provider approved by DESA Heating, LLC. Warranty parts must be obtained through authorized dealers of this product and/or DESA Heating, LLC who will provide original factory replacement parts. Failure to use original factory replacement parts voids this warranty.

Travel, handling, transportation, diagnostic, material, labor and incidental costs associated with warranty repairs, unless expressly covered by this warranty, are not reimbursable under this warranty and are the responsibility of the owner.

Excluded from this warranty are products or parts that fail or become damaged due to misuse, accidents, improper installation, lack of proper maintenance, tampering, or alteration(s).

This is DESA Heating, LLC’s exclusive warranty, and to the full extent allowed by law; this express warranty excludes any and all other warranties, express or implied, written or verbal and limits the duration of any and all implied warranties, including warranties of merchantability and tness for a particular purpose to one (1) year on new products and 30 days on factory reconditioned products from the date of rst purchase. DESA Heating, LLC makes no other warranties regarding this product.

DESA Heating, LLC’s liability is limited to the purchase price of the product, and DESA Heating, LLC shall not be liable for any other damages whatsoever under any circumstances including indirect, incidental, or

consequential damages.

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

This warranty gives you specic legal rights, and you may also have other rights which vary from state to state.

For information about this warranty contact:

New products

) _____________________________

) __________________________

NOT A UPC

DESA Heating, LLC

2701 Industrial Drive

Bowling Green, KY 42101 www.desatech.com

1-866-672-6040

123167-01 Rev D 09/08

Desa HD18NRA, HD18PRA, HD24NRA, HD24PRA, HDL18NR Owner's Operation And Installation Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

SAFETY

PRODUCT IDENTIFICATION

LOCAL CODES

UNPACKING

PRODUCT FEATURES

AIR FOR COMBUSTION AND VENTILATION

INSTALLATION

OPERATION

INSPECTING BURNERS

CLEANING AND MAINTENANCE

SPECIFICATIONS

TROUBLESHOOTING

TECHNICAL SERVICE

REPLACEMENT PARTS

SERVICE HINTS

ACCESSORIES

PARTS CENTRAL

PARTS

WARRANTY