Desa HRB3624 User Manual

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Page 1

UNVENTED (VENT-FREE) GAS LOG HEATER

OWNER’S OPERATION AND INSTALLATION MANUAL

Remote-Ready Models VUL18/24/30(N,P)R, HRB3930/3924(N,P)R

and CRB2618/3624/3630(N,P)R

Thermostatically-Controlled Models VUL18/24/30(N,P)T and

HRB3624(N,P)T

Remote-Ready Models Also Design-Certied As

Vented Decorative Appliances

WARNING: If the information in this manual is not fol-

lowed 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

TAbLE OF CONTENTS

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

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

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

Optional Remote Control Accessories ................. 5

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

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

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

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

Operating Heater ............................................... 20

Inspecting Burners............................................. 25

Cleaning and Maintenance ................................ 26

SAFETy INFORMATION

Wiring Diagram .................................................. 27

Troubleshooting ................................................. 28

Optional Positioning of Thermostat

Sensing Bulb ................................................. 32

Specications .................................................... 33

Illustrated Parts Breakdown and Parts List........ 34

Service Hints ..................................................... 42

Technical Service............................................... 42

Replacement Parts ............................................ 42

Accessories ....................................................... 42

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

WARNING: Improper installation, adjustment, al-

teration, 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 appliance

is for installation only in a

solid-fuel burning masonry or UL127 factory-built replace 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 fireplace that includes instructions stating 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,*

per man ent ly loc ate 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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SAFETy INFORMATION

Continued

WARNING: This product con-

tains and/or generates chemicals

known to the state of California

to cause cancer or birth defects or other reproductive harm.

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.

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

others. 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 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 warnings. Keep this manual for reference. It is your guide to safe and proper operation of this replace.

gases are odorless. An

WARNING: Any change to

this heater or its controls can

be dangerous.

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. When using the hand-

held remote accessory (Remote-

Ready Models Only), keep selector switch in the OFF position to prevent children from turning on burners with remote.

You must operate this heater with the replace screen and hood in place. Make sure replace screen and hood are in place before running heater.

WARNING: Do not use a

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

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

Page 4

SAFETy INFORMATION

Continued

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. 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

4. This heater shall not be installed in a bedroom or bathroom, unless installed as a vented appliance. See Installing Damper Clamp Accessory for Vented Operation, page 12 (Remote-Ready Models Only).

5. 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 for damage. If damaged, repair ue and rebox before operating heater.

6. Do not burn solid-fuel in a masonry or UL127 factory-built replace in which a vent-free room heater is installed.

7. 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.

8. To prevent the creation of soot, follow the instructions in Cleaning and Maintenance, page 26.

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 and furniture.

10. This heater needs fresh, outside air ventilation to run properly. This heater has an Oxygen Depletion Sensing (ODS) safety shutoff system. The ODS shuts down the heater if enough fresh air is not available. See Air for Combustion and Ventilation, page 6. If heater keeps shutting off, see Troubleshooting, page 28.

11. Do not run heater

• where ammable 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 exposed 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.

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

15. Turn heater off and let cool before servicing, installing or repairing. Make sure the selector switch is in the OFF position (Remote-Ready Models Only). Only a qualied service person should install, service or repair heater.

16. Make sure the selector switch is in the OFF position when you are away from home for long periods of time (Remote-Ready Models Only).

17. Remote-ready heaters must not be connected to any external electrical source.

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

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

20. Prov ide adeq ua te clearan ce s around air openings.

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. Note: Do not pick up heater base assembly 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 all items for any shipping damage. If damaged, promptly inform dealer where you bought heater.

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PRODUCT

IDENTIFICATION

Model CRB and HRB Series Logs

State of Massachusetts: The installation must be made by a licensed plumber or gas fitt er in the Common we alth of Massachusetts.

Sel lers 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.

Ignitor

Control Knob

Model VUL Series Logs

Ignitor

Control

Remote Control (Optional)

Knob

Figure 1 - Product Identication

Flame Adjustment Knob

Base Assembly

Rear Burner

Base Assembly

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.

National Fire Protection Association, Inc.

1430 Broadway

New York, NY 10018

Batterymarch Park

Quincy, MA 02269

OPTIONAL REMOTE

CONTROL ACCESSORIES

There are four optional remote controls that can be purchased separately for Remote-Ready

Models Only:

• wall switch • hand-held ON/OFF remote

• wall thermostat • hand-held thermostat remote

See Accessories, page 42.

The wall thermostat or hand-held thermostat may not be used where vented decorative listing is required.

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 both realistic ames and glowing coals. This heater is designed for ventfree 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. This heater may also be operated as a vented decorative (ANSI Z21.60) product by opening the ue damper (Non-Thermostat Models Only).

SAFETY DEVICE

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.

ELECTRONIC IGNITION SYSTEM

This heater has an electronic ignitor to light heater fuel supply.

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Page 6

AIR FOR COMbUSTION

AND VENTILATION

WARNING: This heater shall

not be installed in a conned space or unusually tight construction unless provisions are provided for adequate combustion and ventilation air. Read the following instructions to insure proper fresh air for this and other fuel-burning appliances in your home.

Today’s homes are built more energy 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, Section 5.3, 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.

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 (6 x 10 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, below.

Conned 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 per hour (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 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 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 HEATER 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.

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Page 7

Remove Door into Adjoining

Room, Option

Ventilation Grills

Into Adjoining Room,

Option 2

Ventilation

Grills Into Adjoining

Room,

Option 1

12"

AIR FOR COMbUSTION

AND VENTILATION

Continued

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

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

Length x Width x Height =__________cu. ft.

(volume of space)

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

(width) x 8 ft. (ceiling height) = 2560 cu. ft. (volume of space)

If additional ventilation to adjoining room is

supplied with grills or openings, add the volume of these rooms to the total volume of the space.

2. 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: 2560 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. Di-

rect-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.

__________ Btu/Hr (maximum the space can support)

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

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

73,000 Btu/Hr (actual amount of

The space in the above 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:

119426-01A 7

can support)

Btu/Hr used)

40,000

33,000

73,000

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A. Rework worksheet, adding the space of an adjoin-

ing room. If the extra space provides an unconned space, remove door to adjoining room or add ventilation grills between rooms. See Ventilation

Air From Inside Building.

B. Vent room directly to the outdoors. See Ventila-

tion 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 maximum 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 is smaller than that dened as an unconned 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 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, Section 5.3, Air for Combustion and Ventilation for required size of

ventilation grills or ducts.

Figure 2 - Ventilation Air from Inside Building

Page 8

AIR FOR COMbUSTION

Outlet Air

Ventilated Attic

Outlet

Inlet Air

Ventilated

Crawl Space

Crawl

Space

To Attic

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, 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.

NOTICE: State or local codes

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

WARNING: Make sure the

selector switch is in the OFF

position before installing heater (Remote-Ready Models Only).

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 and rebox ue for damage. If damaged, repair ue and rebox before operating heater.

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.

vice person must install heater. Follow all local codes.

WARNING: A qualied ser-

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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

unless installed as a vented appliance, see page 12 (Remote-Ready Models Only)

• in a recreational vehicle

•

where curtains, furniture, cloth-

ing or other ammable objects

are less than 42" from the front,

top or sides of the heater

• in high trafc areas

• in windy or drafty areas

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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 the correct type of gas (natural or propane/LP). If your gas supply is not the correct gas type, 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.

INSTALLATION AND CLEARANCES FOR VENT-FREE OPERATION

LOG SIZING REQUIREMENTS

Minimum Firebox Size Log Front Rear*

Size Height Depth Width Width

18" 17" 14" 20" 14" 24" 17" 14" 26" 18" 30" 17" 14" 32" 22"

*Measured at 14" depth

Carefully follow the instructions below. This will ensure safe installation into a masonry, UL127listed manufactured replace or listed vent-free rebox.

Minimum Clearances For Side

Combustible Material, Side Wall and Ceiling

A. Clearances from the side of the fireplace

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

Note: When installing your gas logs into

a man uf actur ed fireb ox , foll ow fir ebox manufacturer’s instructions for minimum clearances to combustible materials.

B. Clearances from the top of the fireplace

opening to the ceiling should not be less than 42".

Example

WARNING: Maintain the

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

MINIMUM FIREPLACE CLEARANCE TO

COMBUSTIBLE MATERIALS

Log Size 18", 24", 30" Side Wall 16" Ceiling 42" Floor 5"

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*Minimum 16" from Side Wall

Figure 4 - Minimum Clearance for

Combustible to Wall

Page 10

Heat Resistant Material

(A)

INSTALLATION

Continued

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 12.

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 on this page.

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 8" up (for all models). If noncombustible material is less than 12", you must install the replace hood accessory (24" and 30" Models Only). See Figure 5 for minimum clearances.

If Using Mantel

IMPORTANT: If you cannot meet these minimum clearances, you must operate heater with chimney ue damper open. Go to Installing Damper Clamp Accessory for Vented Operation, page 12.

Noncombustible Material Requirements for

Distance (A) Safe Installation

2" or more Noncombustible mate-

Between 8" and 12"

18" Model: Noncombus-

Less than 8"

Figure 5 - Heat Resistant Material (Slate,

Marble, Tile, etc.) Above Fireplace

rial OK. 24" or 30" Models:

Install fireplace hood ac ces sor y (GA 605 0, GA6052 or GA6053 see Accessories, page 42).

tible material OK. Noncombustible mate-

rial 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.

MANTEL CLEARANCES

In addition to meeting noncombustible material 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, page 11).

Determining Minimum Mantel Clearance When Using a Hood

If minimum clearances in Figure 6, page 11, are not met, you must have a hood. When using a hood there are still certain minimum mantel clearances required. Follow minimum clearances shown in Figure 7, page 11, when using hood.

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Page 11

INSTALLATION

14" Min.

Combustible Material

Noncombustible Material

Minimum NonCombustible Material

Minimum NonCombustible Material Height

Distances to Underside of Mantel

Top of Fireplace Opening

Underside of Mantel Shelf

12"

(A)

18"

14"

20"

17"

22"

19"

24"

20"

All minimum distances are in inches

Log Set

24"/30"/36" Models 18" Model

10"

Mantel Shelf

Minimum Noncombustible Material

8" Min.

12" 15" 18"

All minimum distances are in inches

Log Sets

18", 24", & 30" Models

20"

10"

12"

Distances to Underside of Mantel

Hood (GA6050, GA6052, or GA6053)

Top of Fireplace Opening

Underside of Mantel Shelf

Mantel Shelf

Hearth

5" Min.

Combustible Material

Continued

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.

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

of the following:

• operate the logs only with the ue damper open

• raise the mantel to an acceptable height

• remove the mantel

Figure 7 - Minimum Mantel Clearances

When Using Hood

FLOOR CLEARANCES

A. If installing appliance on the oor level, you

must maintain the minimum distance of 14" to combustibles (see Figure 8).

B. If combustible materials are less than 14" to

the replace, you must install appliance at least 5" above the combustible ooring (see Figure 9).

Figure 8 - Minimum Fireplace Clearances

If Installed at Floor Level

Figure 6 - Minimum Mantel Clearances

119426-01A 11

Without Using Hood

Figure 9 - Minimum Fireplace Clearances

Above Combustible Flooring

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Page 12

INSTALLATION

Continued

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.

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 vent-free operation.

2. State or local codes do not permit vent-free 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 42). This will insure vented operation (see Figure 10). The damper clamp will keep damper open. Installation instructions are included with clamp accessory.

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 Are

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

Damper Clamp

Damper

Damper Clamp

Damper

Masonry Fireplace

Figure 10 - Attaching Damper Clamp

Manufactured Fireplace

Damper

INSTALLING HEATER BASE ASSEMBLY

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.

Chimney Minimum Permanent

Height Flue Opening

6' to 15' 39 sq. inches 15' to 30' 29 sq. inches

www.desatech.com

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

119426-01A12

Page 13

INSTALLATION

Continued

IMPORTANT: Make sure the heater burners are level. If heater is not level, heater will not work properly. For thermostat models, avoid damage to thermostat bulb. Avoid nicks or sharp bends in thermostat bulb wire. Keep thermostat bulb in mounting bracket until ready to mount base to oor. See Optional Positioning Of Thermostat Sensing Bulb, page 32.

Installation Items Needed

• hardware package (provided with heater)

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

• sealant (resistant to propane/LP gas, not provided)

• electric drill with 3/16” masonry drill bit

Note: Install optional GHRCTB Receiver and Hand-Held Remote Control Kit (see Accessories, page 42) before installing gas log heater (RemoteReady Models Only). See installation instructions included with the kit.

1. Apply pipe joint sealant lightly to male threads

of gas tting (not provided). For Thermostatically-Controlled Models connect approved exible gas hose to gas regulator of heater (see Figure 11). For Remote-Ready models connect approved exible gas hose to inlet side of gas control (see Figure 12). IMPOR- TANT: Hold gas regulator with wrench when connecting exible gas hose (Thermostatically-Controlled Models Only).

2. Position heater base assembly in replace.

3. Mark screw locations through holes in front

panel of base (see Figure 13). If installing in a brick-bottom replace, mark screw locations in mortar joint of bricks.

4. Remove heater base from replace.

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

drill bit.

Attach base, through holes in front panel of base, to replace oor using masonry screws provided in hardware package (see Figure 13).

7. Connect to gas supply. See Connecting To Gas

Supply, page 14.

Heater Gas Regulator

Flexible Gas Hose (if allowed by local codes)

Figure 11 - Attaching Flexible Gas Hose to

Heater Gas Regulator (Thermostatically-

Controlled Models Only)

Gas Control

Flexible Gas Hose (if allowed by local codes)

Figure 12 - Attaching Flexible Gas Hose

to Heater Gas Regulator

(Remote-Ready Models Only)

Masonry Screw

Figure 13 - Attaching Base to Fireplace

Floor (Remote-Ready Models Only)

119426-01A 13

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Page 14

INSTALLATION

Continued

CONNECTING TO GAS SUPPLY

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

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" of water. If you do not reduce incoming gas pressure, heater regulator damage could occur. Install external regulator with the vent pointing down as shown in Figure 14. Pointing the vent down protects it from freezing rain or sleet.

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

CAUTION: Never connect

propane/LP replace 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 replace 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

• approved exible gas line with gas connector (if allowed by local codes) (not provided)

* A CSA design-certied equipment shutoff valve with 1/8" NPT tap is an acceptable alternative to test gauge connection. Purchase the optional CSA design-certied equipment shutoff valve from your dealer. See Accessories, page 42.

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.

Propane/LP Supply Tank

Figure 14 - External Regulator With Vent

Pointing Down

External Regulator

Vent Pointing Down

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119426-01A14

Page 15

INSTALLATION

Continued

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 Figures 15 or 16, depending on your model).

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.

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.

CSA Design-Certied

PROPANE/LP

From External Regulator (11" W.C.** to 14" W.C. Pressure)

NATURAL

From Gas Meter (5" W.C.** to 10.5" W.C. Pressure)

Tee Cap Pipe Joint Nipple

Figure 15 - Gas Connection

(Thermostatically-Controlled Models Only)

Equipment Shutoff Valve With 1/8" NPT Tap*

Approved Flexible Gas Hose (if allowed by local codes)

3" Minimum

Gas Regulator

Sediment Trap

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 Figures 15 or 16, depending on your model. 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

(Thermostatically-Controlled

Models Only).

CAUTION: Avoid damage to gas control. Hold gas control with wrench when connecting it to gas piping and/or ttings (Remote-Ready Models Only).

CSA Design-Certied

Equipment Shutoff Valve With 1/8" NPT Tap*

Approved Flexible Gas Hose (if allowed by local codes)

3" Minimum

Pipe Cap Tee

Gas Control

Figure 16 - Gas Connection (Remote-

* Purchase the optional CSA design-certied

equipment shutoff valve from your dealer. See Accessories, page 42.

**Minimum inlet pressure for purpose of input

adjustment.

Nipple Joint

Sediment Trap

Ready Models Only)

PROPANE/LP

From External

Regulator

(11" W.C.**

to 14" W.C.

Pressure)

NATURAL

From Gas

Meter

(5" W.C.**

to 10.5"

W.C.

Pressure)

119426-01A 15

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Page 16

INSTALLATION

Continued

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 noncorrosive leak detection uid to all joints. Bubbles forming show a leak. Correct all leaks at once.

CAUTION: Make sure exter-

nal regulator has been installed between propane/LP supply and heater. See guidelines un-

der Connecting to Gas Supply,

page 14.

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 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 noncorrosive leak detection uid 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)

Close equipment shutoff valve (see Figure 17).

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 for natural gas or propane/LP supply to equipment shutoff valve for propane/LP (see Figure 18 or 19, page 17). Apply noncorrosive leak detection uid to all joints. Bubbles forming show a leak.

4. Correct all leaks at once.

PRESSURE TESTING HEATER GAS CONNECTIONS

Open equipment shutoff valve (see Figure 17).

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 thermostat gas valve (Thermostat-Controlled Models) or to gas control (RemoteReady Models) (see Figure 18 or 19, page

17). Apply noncorrosive leak detection uid to all joints. Bubbles forming show a leak.

5. Correct all leaks at once.

6. Light heater (see Operating Heater, page 20 or 22, depending on your model). Check all other internal joints for leaks.

Turn off heater (see To Turn Off Gas to Appli- ance, page 21 for Thermostat-Controlled models or page 23 for Remote-Ready Models).

Equipment Shutoff Valve

Figure 17 - Equipment Shutoff Valve

Open

Closed

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119426-01A16

Page 17

INSTALLATION

Continued

Propane/LP Supply Tank

Figure 18 - Checking Gas Joints

(Propane/LP Only)

Gas Meter

Figure 19 - Checking Gas Joints (Natural

INSTALLING OPTIONAL REMOTE ACCESSORIES

Installing Remote Receiver

Remote control accessories are available separately (see Accessories, page 42).

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.

Equipment Shutoff Valve

Thermostat Gas Valve or Control Valve Location

Equipment Shutoff Valve

Thermostat Gas Valve or Control Valve Location

Gas Only)

4. Disconnect gas line from heater base as shown in Figure 11 or 12, page 13.

WARNING: A qualied ser-

vice person must connect and disconnect gas to heater. Follow all local codes.

5. Remove heater base from replace.

6. Install receiver bracket to base with phillips screws provided in hardware kit as shown in Figure 20.

7. Disconnect jumper wire from control valve at TPTH and TH locations (see Figure 21).

8. Install remote receiver into receiver bracket using pads and push button clips provided with receiver (see Figure 22).

Phillips Screws

Remote Receiver Bracket

Figure 20 - Installing Remote Receiver

Control Valve

Figure 21 - Disconnecting Jumper Wire

Bracket

Jumper Wire

From Control Valve

9-Volt Battery

Battery Clip

WARNING: Turn off heater

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

Pad

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.

119426-01A 17

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Push Button Clips

Figure 22 - Installing Remote Receiver

Bracket

Terminal Wires

Page 18

INSTALLATION

Continued

9. Connect wires to control valve at the TPTH and TH locations as shown in Figure 23. 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 Install-

ing Heater Base Assembly on page 12 to rein-

stall heater into replace. Test gas connection for leaks (see Checking Gas Connections, page 16).

11. If logs were removed from heater for install remote accessory, replace logs (see Installing Logs, column 2).

White Wire From Receiver

Red Wire From

Control Valve

Figure 23 - Connecting Wires

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 recei ver behind receiver bracket mounted on base assembly.

2. Locate the battery clip mounted on the back of the receiver (see Figure 22, page 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.

2. Attach terminal wires to the battery. Place battery into the battery housing.

3. Replace battery cover onto remote control unit.

Receiver

Battery Cover

Terminal Wires

9-Volt Battery

Figure 24 - Installing Battery in Hand-Held

Remote Control Unit

Battery Housing

Remote Control Unit

INSTALLING LOGS

WARNING: Failure to posi-

tion 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.

Each log is marked with a number. These numbers will help you identify the log when installing. It is very important to install these logs exactly as instructed. Do not modify logs. Only use logs supplied with heater.

VUL Model Logs Only

1. Place bottom log in center of the base assembly as shown in Figure 25, page 19.

2. Rest rear log in back corner sections of base assembly as shown in Figure 25, page 19. Make sure log is completely vertical and not leaning in toward burner where the ame will touch the log.

3. Position front right log against right side of grate prongs (see Figure 25, page 19).

4. Position front left log against left side of grate prongs (see Figure 25, page 19).

5. Place middle right log over front right and bottom logs as shown in Figure 26, page 19. Be sure hole in middle right log seats over pin in bottom log.

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119426-01A18

Page 19

INSTALLATION

Continued

Place middle left log over front left and bottom logs as show in Figure 26. Be sure hole in middle left log seats over pin in front left log.

Front Left Log

Rear Log

CRB and HRB Model Logs Only

1. Place bottom log in center of the base assembly as shown in Figure 27.

2. Rest rear log in back corner sections of base assembly as shown in Figure 27. Make sure log is completely vertical and not leaning in toward burner where the ame will touch the log.

3. Position front log as shown in Figure 27, making sure the grooves in the bottom of the log t over the grate prongs.

Front Log

Bottom Log

Grate Prongs

Base Assembly

Figure 25 - Installing VUL Model Log Sets

Note: Your appliance may vary from model shown but log placement will be the same.

Middle Left Log

Pin on Front Left Log

Bottom Log

Front Right Log

Middle Right Log

Bottom Log

Base Assembly

Figure 27 - Installing CRB and HRB Model

Log Sets

Note: Your appliance may vary from model shown but log placement will be the same.

Figure 26 - Installing VUL Model Log Sets

119426-01A 19

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Page 20

OPERATING HEATER

THERMOSTAT-CONTROLLED

MODELS

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

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 oor because some gas is heavier than air and will settle on the oor.

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 neig h bor ’s phon e. Fo llo w 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.

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 the chimney damper closed. This will put all the heat into the room.

However, there may be times you will desire the full ames of the HI heat setting but will nd the heat output excessive. You can open the chimney damper (if you have one) fully or

partially to release some of the heat.

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

1. STOP! Read the safety information column 1.

2. Make sure equipment shutoff valve is fully

open.

3. Turn control knob clockwise to the OFF position.

4. Wait ve (5) minutes to clear out any gas. Then smell for gas, including near the oor.

If you smell gas, STOP! Follow “B” in the safety information, column 1. If you don’t smell gas, go to the next step.

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119426-01A20

Page 21

OPERATING HEATER

Continued

5. Turn control knob counterclockwise

to the PILOT position. Press in control

knob for ve (5) seconds (see Figure 28).

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. 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

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.

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 qualied 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 ad-

just heating levels by using the equipment shutoff valve.

Ignitor Electrode

Thermocouple

Figure 29 - Pilot

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 ame 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 burner to remain fully on, without modulating down in most cases.

MANUAL LIGHTING

PROCEDURE

1. Follow steps 1 through 5 under Lighting

Instructions, page 20 .

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.

Ignitor Button

Figure 28 - Control Knob and Ignitor

Button Location

119426-01A 21

Control Knob

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Page 22

OPERATING HEATER

Continued

LIGHTING

INSTRUCTIONS

REMOTE-READy MODELS

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

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 oor because some gas is heavier than air and will settle on the oor.

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 neig h bor ’s phon e. Fo llo w 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.

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.

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

However, there may be times you will desire the full ames of the HI heat setting but will nd the heat output excessive. You can open the chimney damper (if you have one) fully or

partially to release some of the heat.

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

STOP! Read the safety information column 1.

2. Make sure equipment shutoff valve is fully open.

3. Set selector switch in the OFF position.

4. Press in and turn control knob clockwise

to the OFF position (see Figure 30,

page 23).

WARNING: Burners will come on automatically within one minute when the selector switch is in the

ON position after the pilot is lit.

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119426-01A22

Page 23

OPERATING HEATER

ON OFF REMOTE

Continued

5. Wait ve (5) minutes to clear out any gas. Then smell for gas, including near the oor.

If you smell gas, STOP! Follow “B” in the safety information, column 1, page 22. If you don’t smell gas, go to the next step.

6. Press in and turn control knob counterclockwise to the PILOT position.

Press in control knob for ve (5) seconds (see Figure 30).

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 less. This will allow air to bleed from the gas system.

7. 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

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 24.

8. 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 qualied service person

or gas supplier for repairs.

Note: If pilot goes out, repeat steps 4

through 8, page 22 and above.

9. Slightly push in and turn control knob counterclockwise to the ON position.

10.

Wait one minute and switch selector switch to the ON position to light burners. Note: AUTO is only functional when using GWMT1 or GWMS2 optional accessories.

11. Set ame adjustment knob to any level

between HI and LO.

Control Knob

Ignitor Button

Figure 30 - Control Knob and Ignitor

Flame Adjustment Knob

Selector Switch in OFF Position

Button Location

CAUTION: Do not try to ad-

just heating levels by using the equipment shutoff valve.

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.

Pilot Burner

Figure 31 - Pilot (Propane/LP)

Pilot Burner

Figure 32 - Pilot (Natural)

TO TURN OFF GAS

TO APPLIANCE

Shutting Off Heater

1. Turn control knob clockwise to the OFF position.

2a. Set selector switch in the OFF position. 2b. If Using Optional Hand-Held Remote:

Set selector switch in the OFF position to

prevent draining battery.

Shutting Off Burners Only (pilot stays lit)

You may shut off the burners and keep the pilot lit by doing one of the following:

1. Turn control knob clockwise to the PILOT position.

2. Use remote control manual OFF button.

3. Set selector switch in the OFF position.

Ignitor Electrode

119426-01A 23

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Page 24

OPERATING HEATER

ON OFF REMOTE

LOCK

MANU AUTO

ºC/ºF

TEMP

POWER

ROOM TEMP

SET TEMP

AUTO

Continued

MANUAL LIGHTING

PROCEDURE

1. Follow steps 1 through 6 under Lighting Instructions, pages 22 and 23.

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 steps 9 through 11, Lighting Instructions, page 23.

OPTIONAL HAND-HELD

REMOTE OPERATION

Note: All remote control accessories must be purchased separately (see Accessories, page

42). 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 22.

After lighting, let pilot ame burn for about

one minute. Turn control knob to ON posi-

tion. Adjust ame adjustment knob anywhere

between HI and LO. Slide the selector switch to the REMOTE position (see Figure 33). Note: The burner may light if hand-held remote was on when selector switch was last turned off. You can now turn the burner on and off with the hand-held remote control unit.

IMPORTANT: Do not leave the selector switch

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

Control Knob in On Position

Selector Toggle Switch (Optional Hand-Held Remote Control)

Figure 33 - Setting the Selector switch,

Control Knob and Flame Adjustment

Knob for Remote Operation

ON/OFF SERIES (MODEL HRC100)

Hold the control button on the hand-held remote until burner turns on. Hold the control button

again until burner turns off (see Figure 34).

Flame Adjustment Knob

TO LOCK press both buttons on hand-held

remote control until light stops ashing. Handheld remote control is now locked. If the re is

on it will be turned off automatically. In the locked state, the light will not light up when any button is pressed.

TO UNLOCK press both buttons together on hand-held remote control until the light

stops ashing. The hand-held remote is now

unlocked.

Indicator Light

Figure 34 - On/Off Hand-Held Remote

THERMOSTAT SERIES (MODEL HRC200)

The hand-held remote can be operated using

either the manual mode (MANU) or thermostatic mode (AUTO) (see Figure 35). To select

Fahrenheit/Centigrade mode display, carefully

press the ˚C/˚F mode button with the end of a paper clip or similar blunt object.

Locks System to Prevent Accidental Ignition

Turns Burners On or Off

Increases or Decreases Room Temperature in AUTO Mode

Figure 35 - Thermostat Hand-Held

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Control Button

Control Unit

Digital Display Shows Temperature and Settings

Turns Hand-Held Remote On or Off and Allows You to Choose the Manual Setting

Selects AUTO Mode

°C/°F Mode Button

Remote Control Unit

119426-01A24

Page 25

OPERATING HEATER

Continued

Manual Mode

Press the POWER and LOCK buttons together to turn on the hand-held remote control.

2. Press the MANU button to turn on the

replace.

3. Press the POWER and LOCK buttons

together to turn off the replace.

Auto (Thermostatic) Mode

Press the POWER and LOCK buttons together to turn on the hand-held remote control.

2. Press AUTO button to select this mode.

3. Set the desired room temperature by pressing the TEMP + or - buttons.

4. Press the POWER and LOCK buttons

together to turn off the replace

Note: Do not leave the hand-held remote in the AUTO mode close to the replace. The radiant heat from the replace will turn off the replace.

Ideally, place the hand-held remote in the center

of the room facing towards the replace.

Note: Do not hold the hand-held remote for a long time. Body temperature will affect its operation in the 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 the replace, the receiver

ON/OFF/REMOTE switch should be in the OFF position.

Auto Shutoff Feature

1. If the average room temperature exceeds 82 degrees Fahrenheit (28 degrees Centigrade), the hand-held remote control will perform a safety override and shut the replace off. This feature is not available

in the MANU mode.

2. The receiver continuously receives signals

from the hand-held remote to control the room temperature. If the hand-held remote is misplaced, obstructed or for any reason

cannot transmit to the receiver, the receiver will shut off the replace after 8 minutes.

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.

INSPECTING bURNERS

Check pilot ame pattern and burner ame patterns often.

PILOT FLAME PATTERN

Figure 36 shows a correct pilot ame pattern. Figure 37 shows an incorrect pilot ame 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 ame pattern is incorrect, as shown in Figure 37

• turn heater off (see To Turn Off Gas to Appli- ance, page 21 [Thermostatically-Controlled Models] or page 23 [Remote-Ready Models])

• see Troubleshooting, page 28

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

Thermocouple

Figure 36 - Correct Pilot Flame Pattern

(Your pilot may vary from pilots shown)

Thermocouple

Figure 37 - Incorrect Pilot Flame Pattern

(Your pilot may vary from pilots shown)

Pilot Burner

Thermocouple

Pilot Burner

Thermocouple

119426-01A 25

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Page 26

INSPECTING bURNERS

Continued

FRONT BURNER FLAME PATTERN

Figure 38 shows correct front burner ame pattern. Figure 39 shows incorrect front burner ame pattern. The incorrect burner ame pattern shows yellow tipping at top of blue ame.

WARNING: If yellow tipping

occurs, your heater could produce increased levels of carbon monoxide. If front burner ame pattern shows yellow tipping, follow instructions at bottom of this page. Yellow ame on rear burner is normal.

NOTICE: Do not mistake orange ames with yellow tipping. Dirt or other ne particles are burned by heater, causing brief patches of orange ame.

If front burner ame pattern is incorrect, as shown in Figure 39

• turn heater off (see To Turn Off Gas to Appli- ance, page 21 [Thermostat-Controlled Models] or page 23 [Remote-Ready Models])

• see Troubleshooting, page 28

Figure 38 - Correct Front Burner Flame

Pattern

Yellow Tipping At Top of Blue Flame

Figure 39 - Incorrect Front Burner Flame

Pattern

CLEANING AND

MAINTENANCE

WARNING: Turn off heater

and let cool before cleaning.

CAUTION: You must keep control areas, burn ers 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, pet hair, bedding material, 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 ame. 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 qualied 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 compressed 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 40, page 27).

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

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119426-01A26

Page 27

CLEANING AND

Thermopile

MAINTENANCE

Continued

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 ame indicates dust and dirt in the pilot assembly. There is a small pilot air inlet hole about 2" from where the pilot ame comes out of the pilot assembly (see Figure 41). 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.

Injector Holder

Ports/Slots

Burner Tube

Primary Air Inlet Holes

Figure 40 - Injector Holder On Outlet

Burner Tube

LOGS

• If you remove logs for cleaning, refer to Installing Logs, page 18, to properly replace logs.

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

MAIN BURNER

Periodically inspect all burner ame holes with the 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.

WIRING DIAGRAM

(Remote-Ready Models Only)

Pilot Air Inlet Hole

Pilot Assembly

Figure 41 - Pilot Inlet Air Hole (Your pilot

may vary from pilot shown)

119426-01A 27

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Page 28

TROUbLESHOOTING

WARNING: Turn off 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 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

POSSIBLE CAUSE

1. Ignit or ele ct rode not con -

nected to ignitor cable

2. Ignitor cable pinched or wet

3. Broken ignitor cable

4. Bad ignitor

5. Ignitor electrode positioned wrong

6. Ignitor electrode broken

7. Battery not installed, battery po wer low or ba tte ry no t installed correctly (electronic ignition models only)

1. Gas supply turned off or equipment shutoff valve closed

2. Control knob not in PILOT

position

3. Control knob not pressed in while in PILOT position

Air in gas lines when installed

5. De pleted gas supp ly (propane/LP only)

6. ODS/pilot is clogged

7. Gas regulator setting is not

correct

REMEDY

1. Reconnect ignitor cable

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

ignitor cable dry

3. Replace ignitor cable

4. Replace ignitor

5. Replace pilot assembly

6. Replace pilot assembly

7. Install new alkaline battery in electronic ignitor. Verify

battery is installed correctly

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 operation until air is removed

5. Contact local propane/LP gas

company

6. Clean ODS/pilot (see Cleaning and Maintenance, page 26) or

replace ODS/pilot assembly

7. Replace gas regulator

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119426-01A28

Page 29

OBSERVED PROBLEM

ODS /pilot ligh ts but fl ame goes out when control knob is

released

TROUbLESHOOTING

Continued

POSSIBLE CAUSE

1. Control knob not fully pressed

2. Control knob not pressed in long enough

3. Safety interlock system has

been triggered

4. Equipment shutoff valve not fully open

5. Pilot ame not touching thermocouple, which allows thermoc ouple to cool, causing pilot flame to go out. This problem could be caused by one or both of the following:

A) Low gas pressure B) Dirty or partially clogged

ODS/pilot

6. The rmoco upl e conne ction 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 / pilo t (s e e

Cleaning and Maintenance, page 26) or replace ODS/pilot

assembly

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

7. Replace pilot assembly

8. Replace control valve

One or both burners do not light after ODS/pilot is lit

Delayed ignition of one or both burners

Burner backring during combustion

Yellow ame in front burner during burner combustion

119426-01A 29

1. Inlet gas pressure is too low

2. Burner orice(s) clogged

3. Mislocated crossover tube

Remote selector in OFF position (Remote-Ready models only)

Wire disconnected from gas control

(Remote-Ready models only)

1. Manifold pressure is too low

2. Burner orice(s) clogged

3. Mislocated crossover tube

1. Burner orice is clogged or

damaged

2. Damaged burner

3. Gas regulator defective

1. Not enough air

2. Gas regulator defective

www.desatech.com

1. Contact local natural or propane/LP gas company

2. Clean burner(s) (see Cleaning and Maintenance, page 26) or replace burner orice(s)

Contact qualied service person

4. Put remote selector in ON

position

See Wiring Diagram, page 27

1. Contact local natural or propane/LP gas company

2. Clean burner(s) (see Cleaning and Maintenance, page 26) or replace burner orice(s)

Contact qualied service person

1. Clean burner (see Cleaning and Maintenance, page 26) or replace burner orice

2. Replace damaged burner

3. Replace gas regulator

1. C heck b u r ner(s) f o r di r t and debris. If found, clean burner(s) (see Cleaning and Maintenance, page 26)

2. Replace gas regulator

Page 30

OBSERVED PROBLEM

Slight smoke or odor during

initial operation

TROUbLESHOOTING

Continued

POSSIBLE CAUSE

1. Residues from manufacturing processes and logs curing

REMEDY

1. Problem will stop after a few hours of operation

Heater produces a whistling noise when burners are lit

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

Moisture/condensation noticed on windows

Remote does not function (Remote-Ready Models Only)

Heater produces a clicking/ticking noise just after burners are lit or shut off

1. Turning control knob to HI position when burn er s are

cold

2. Air in gas line

3. Air passageways on heater blocked

4. Dirty or par tiall y clog ge d burner orice(s)

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

1. Not enough combustion/ven-

tilation air

1. Battery is not installed. Battery power is low

1. Metal expanding while heating or contracting while cooling

1. Tu rn con trol knob to LO position and let warm up for a minute

2. Operate burners until air is removed from line. Have gas line checked by local natural or propane/LP gas company

3. Observe minimum installation clearances (see pages 9 through 11)

4. Clean burners (see Cleaning and Maintenance, page 26) or replace burner orice(s)

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

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

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

1. This is normal with most heaters. If noise is excessive, contact qualied service person

www.desatech.com

119426-01A30

Page 31

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.

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.

OBSERVED PROBLEM

Heat er pr odu ce s u nwant ed

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 spray, glues, cleaners, chemicals, new carpet, etc. (See IM- PORTANT statement above)

2. Low fuel supply (propane/LP only)

3. Gas le ak. Se e War n i ng

statement at top of page

1. Not enough fresh air is available

2. Low line pressure

ODS/pilot is partially clogged

1. Gas le ak. Se e War n i ng

statement at top of page

2. Control valve or gas control defective

1. Foreign matter between control valve and burner

2. Gas le ak. Se e War n i ng

statement at top of page

REMEDY

1. Op en window to ven ti late room. Stop using odor causing products while heater is running

2. Rell supply tank (propane/LP only)

3. Locate and correct all leaks (see Checking Gas Connec- tions, page 16)

1. Open window and/or door for ventilation

2. Contact local natural or propane/LP gas company

3. Clean ODS/pilot (see Cleaning and Maintenance, page 26)

1. Locate and correct all leaks (see Checking Gas Connec- tions, page 16)

2. Replace control valve or gas

control

1. Take apart gas tubing and remove foreign matter

2. Locate and correct all leaks (see Checking Gas Connec- tions, page 16)

Log set cycles to pilot, but room temperature drops to a lower than ideal level before log set comes back on

119426-01A 31

1. Thermostat sensing bulb needs to be repositioned (Thermostat-Controlled Models Only)

2. Hand-held remote control is too close to heater (RemoteReady Models Only)

www.desatech.com

1. Reposition thermostat sensing bulb (see Optional Positioning of Thermostat Sensing Bulb, page 32)

2. Move hand-held remote control unit farther away from the

heater

Page 32

OPTIONAL POSITIONING

OF THERMOSTAT

SENSING bULb

(Thermostat-Controlled Models Only)

FOR MASONRY AND FACTORYBUILT METAL FIREPLACE

If your log set cycles to pilot, but the room temperature drops to a lower than ideal comfort level before the log set comes back on, you may want to reposition the thermostat sensing bulb.

The thermostat sensing bulb is located on the gas valve assembly. This location allows the thermostat to keep the room temperature at an ideal comfort level for most replace applications. For positioning the thermostat sensing bulb elsewhere, an adhesive-backed mounting clip is available (see Figure 42).

Tools needed: 5/16" hex driver or socket

1. Locate the gas valve assembly and thermostat sensing bulb (see Figure 43).

2. With 5/16” hex driver or socket, loosen the thermostat screw. Carefully slide the thermostat sensing bulb out of the retaining clamp (see Figure 44).

Note: Do not remove the screw. Make sure

you tighten the screw after removing the thermostat sensing bulb.

IMPORTANT: Do not force or bend the

thermostat sensing bulb or capillary.

The thermostat sensing bulb may be located to the lower right front side of replace. Determine location of sensing bulb, but do not mount sensing bulb until step 4. If you have a masonry replace, see Figure 45 for location.

If you have a factory-built metal replace, see

Figure 46 for location.

If your replace has glass doors, position

sensing bulb directly behind door gap on right bottom side (see Figure 47).

Capillary

(Unit Will Differ From Illustration)

Thermostat Sensing Bulb

Screw

Figure 44 - Removing Thermostat

Thermostat Sensing Bulb

Adhesive-backed Mounting Clip

Figure 45 - Locating Thermostat Sensing

Bulb on Masonry Fireplace

Retaining Clamp

Sensing Bulb

Figure 42 - Adhesive-backed Mounting

Clip

(Unit Will Differ From Illustration)

Gas Valve Assembly

Thermostat Sensing Bulb

Figure 43 - Location of Gas Valve

Assembly and Thermostat Sensing Bulb

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Thermostat Sensing Bulb

Adhesive-backed Mounting Clip

Figure 46 - Locating Thermostat Sensing

Bulb on Factory-built Metal Fireplace

Thermostat Sensing Bulb

Adhesivebacked Mounting Clip

Glass Doors

Figure 47 - Installing Thermostat Sensing

Bulb Behind Glass Doors

119426-01A32

Page 33

OPTIONAL POSITIONING OF THERMOSTAT SENSING bULb

Continued

4. The mounting clip must be a minimum of 3" from bottom of replace to prevent crimping of capillary. Once you have decided on a location, clean the area thoroughly. Remove the paper backing from the adhesive on back of mounting clip. Press the clip into the new location so that the thermostat sensing bulb will be positioned vertically with the capillary at the bottom (see Figure 48). Slide the thermostat sensing bulb into the clip.

IMPORTANT: Do not crimp capillary.

Thermostat Sensing Bulb

Capillary

Figure 48 - Positioning the Thermostat

Sensing Bulb in the Vertical Position

with the Capillary at the Bottom

Adhesivebacked Mounting Clip

Do Not Crimp Capillary

SPECIFICATIONS

THERMOSTAT MODELS

VUL18PT

• Rating (Variable): 19,000/30,000 Btu/Hr

• Type Gas: Propane/LP

• Ignition: Electronic

• Manifold Pressure: 7.9" W.C.

• Inlet Gas Pressure (in. of water):

Max - 14" W.C., Min* - 11" W.C.

VUL18NT

• Rating (Variable): 19,000/28,000 Btu/Hr

• Type Gas: Natural

• Ignition: Electronic

• Manifold Pressure: 3.4" W.C.

• Inlet Gas Pressure (in. of water):

Max - 10.5" W.C., Min* - 5" W.C.

VUL24PT/VUL30PT/HRB3624PT

• Rating (Variable): 25,000/36,000 Btu/Hr

• Type Gas: Propane/LP

• Ignition: Electronic

• Manifold Pressure: 7.9" W.C.

• Inlet Gas Pressure (in. of water):

Max - 14" W.C., Min* - 11" W.C.

VUL24NT/VUL30NT/HRB3624NT

• Rating (Variable): 25,000/36,000 Btu/Hr

• Type Gas: Natural

• Ignition: Electronic

• Manifold Pressure: 3.4" W.C.

• Inlet Gas Pressure (in. of water):

Max - 10.5" W.C., Min* - 5" W.C. *For purpose of input adjustment

REMOTE-READY MODELS

VUL18PR/CRB2618NR

• Rating (Variable): 19,000/30,000 Btu/Hr

• Type Gas: Propane/LP

• Ignition: Electronic

• Manifold Pressure: 7.9" W.C.

• Inlet Gas Pressure (in. of water): Max - 14" W.C., Min* - 11" W.C.

VUL18NR/CRB2618NR

• Rating (Variable): 19,000/28,000 Btu/Hr

• Type Gas: Natural

• Ignition: Electronic

• Manifold Pressure: 3.4" W.C.

• Inlet Gas Pressure (in. of water): Max - 10.5" W.C., Min* - 5" W.C.

VUL24PR/VUL30PR/CRB3624PR/ CRB3630PR/HRB3924PR/ HRB3930PR

• Rating (Variable): 25,000/36,000 Btu/Hr

• Type Gas: Propane/LP

• Ignition: Electronic

• Manifold Pressure: 7.9" W.C.

• Inlet Gas Pressure (in. of water): Max - 14" W.C., Min* - 11" W.C.

VUL24NR/VUL30NR/CRB3624NR/ CRB3630NR/HRB3924NR/ HRB3930NR

• Rating (Variable): 25,000/36,000 Btu/Hr

• Type Gas: Natural

• Ignition: Electronic

• Manifold Pressure: 3.4" W.C.

• Inlet Gas Pressure (in. of water): Max - 10.5" W.C., Min* - 5" W.C.

*For purpose of input adjustment

119426-01A 33

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Page 34

ILLUSTRATED PARTS bREAkDOWN AND PARTS LIST

LOG MODELS VUL18NT, VUL18PT, VUL24NT, VUL24PT, VUL30NT, VUL30PT, VUL18NR, VUL18PR, VUL24NR, VUL24PR, VUL30NR AND VUL30PR

This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Replacement Parts on page 42 of this manual.

PART NUMBER

KEY

NO.

VUL18NT VUL18PT VUL18NR VUL18PR

VUL24NT VUL24PT VUL24NR VUL24PR

VUL30NT VUL30PT VUL30NR VUL30PR

DESCRIPTION QTY

1 113621-01 113621-07 113621-13 Front Right Log (#1) 1 2 113621-02 113621-08 113621-14 Front Left Log (#1) 1 3 113621-03 113621-09 113621-15 Middle Right Log (#2) 1 4 113621-04 113621-10 113621-16 Middle Left Log (#2) 1 5 113621-05 113621-11 113621-11 Bottom Log (#3 - Remote) 1

113621-05 113621-19 113621-19 Bottom Log (#3 - T-stat)

6 113621-06 113621-12 113621-18 Rear Log (#3) 1

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119426-01A34

Page 35

ILLUSTRATED PARTS bREAkDOWN AND PARTS LIST

LOG MODELS CRB2618NR, CRB2618PR, CRB3624NR, CRB3624PR, CRB3630NR, CRB3630PR, HRB3624NT, HRB3624PT, HRB3624NR AND HRB3624PR

This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Replacement Parts on page 42 of this manual.

PART NUMBER

HRB3624NT HRB3624PT HRB3924NR

KEY

NO.

CRB2618NR CRB2618PR

HRB3924PR CRB3624NR CRB3624PR

CRB3630NR CRB3630PR

DESCRIPTION QTY

1 113620-01 113620-04 113620-07 Top Log (#1) 1 2 113620-02 113620-05 113620-05 Bottom Log (#2) 1 3 113620-03 113620-06 113620-09 Back Log (#3) 1

119426-01A 35

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Page 36

ILLUSTRATED PARTS bREAkDOWN

THERMOSTAT-CONTROLLED MODELS VUL18NT, VUL18PT, VUL24NT, VUL24PT, VUL30NT, VUL30PT, HRB3624NT AND HRB3624PT

www.desatech.com

119426-01A36

Page 37

PARTS LIST

THERMOSTAT-CONTROLLED MODELS

This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Replacement Parts on page 42 of this manual.

KEY NO. PART NO. DESCRIPTION QTY.

1 ** Ramp Burner Base • • • • • • 1 2 111435-01 Electronic Ignitor • • • • • • 1 3 112465-01 Ramp Front Burner • • 1

112465-02 Ramp Front Burner • • • • 1

4 113242-01 Ramp Back Burner Kit • • 1

113242-02 Ramp Back Burner Kit • • • • 1

5 107485-01 O.D.S. Pilot, Natural Gas • • • 1

107486-01 O.D.S. Pilot, Propane/LP Gas • • • 1

6 112713-01 Pilot Bracket, Natural Gas • • • 1

112713-02 Pilot Bracket, Propane/LP Gas • • • 1 7 098249-01 Nut, ODS • • • • • • 2 8 M11084-26 Screw • • • • • • 10 9 112782-01 Air Deactor Bracket • • 1

112782-02 Air Deactor Bracket • • • • 1 10 M11084-38 Screw • • • • • • 2 11 101004-11 Rear Burner Injector, Natural • 1

101004-10 Rear Burner Injector, Propane/LP • 1

101004-04 Rear Burner Injector, Natural • • 1

101004-02 Rear Burner Injector, Propane/LP • 1

101004-15 • 1 12 101004-11 Front Burner Injector, Natural • 1

101004-10 Front Burner Injector, Propane/LP • 1

101004-22 Front Burner Injector, Natural • • 1

101004-06 Front Burner Injector, Propane/LP • • 1 13 112708-02 Thermostat Burner Tube • • • • • • 1 14 099211-01 Screw • • • • • • 2 15 098544-01 Thermobulb Clip • • • • • • 1 16 099387-09 Pilot Tube • • 1

099387-14 Pilot Tube • • • • 1 17 101053-01 Adapter • • • • • • 1 18 101329-21 Thermostat Gas Valve (NG) • 1

101329-30 Thermostat Gas Valve (LP) • 1

101329-31 Thermostat Gas Valve (NG) • • 1

101329-26 Thermostat Gas Valve (LP) • • 1 19 100000-01 Cotter Pin • • • • • • 1 20 102013-01 Control Rod • • • • • • 1 21 098354-01 Control Knob • • • • • • 1 22 112714-01 Thermostat Valve Bracket • • • • • • 1 23 098271-12 Ignitor Cable • • • • • • 1 24 098867-09 Gas Regulator, Natural Gas • • • 1

098867-10 Gas Regulator, Propane/LP • • • 25 112712-01 Inlet Tube • • • • • • 1

PARTS AVAILABLE NOT SHOWN

100563-01 Warning Plate • • • • • • 1

101054-01 Lighting Instruction Plate • • • • • • 1

101137-02 Hardware Kit • • • • • • 1

GA6060 Lava Rock • • • • • • 1

102030-01 Auxiliary Thermostat Mtg. Clip • • • • • • 1

** Not a eld replaceable part.

VUL18NT

VUL18PT

VUL24/30NT

VUL24/30PT

HRB3624NT

HRB3624PT

119426-01A 37

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ILLUSTRATED PARTS bREAkDOWN

REMOTE-READY VARIABLE CONTROL MODELS VUL18NR, VUL18PR, VUL24NR, VUL24PR, VUL30NR, VUL30PR

www.desatech.com

119426-01A38

Page 39

PARTS LIST

REMOTE-READY VARIABLE CONTROL MODELS

This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Replacement Parts on page 42 of this manual.

KEY NO. PART NO. DESCRIPTION QTY.

1 ** Ramp Burner Base • • • • 1 2 111435-01 Electronic Ignitor • • • • 1 3 112465-01 Ramp Front Burner • • 1

112465-02 Ramp Front Burner • • 1

4 113242-01 Ramp Back Burner Kit • • 1

113242-02 Ramp Back Burner Kit • • 1

5 103779-01 O.D.S. Pilot, Natural Gas • • 1

103778-01 O.D.S. Pilot, Propane/LP Gas • • 1

6 112713-01 Pilot Bracket, Natural Gas • • 1

112713-03 Pilot Bracket, Propane/LP Gas • • 1 7 098249-01 Nut, ODS • • • • 2 8 M11084-26 Screw • • • • 8 9 112782-03 Air Deactor Bracket • • 1

112782-02 Air Deactor Bracket • • 1 10 101480-12 Jumper Wire • • • • 1 11 101004-11 Rear Burner Injector, Natural • 1

101004-10 Rear Burner Injector, Propane/LP • 1

101004-04 Rear Burner Injector, Natural • 1

101004-02 Rear Burner Injector, Propane/LP • 1 12 101004-11 Front Burner Injector, Natural • 1

101004-10 Front Burner Injector, Propane/LP • 1

101004-08 Front Burner Injector, Natural • 1

101004-06 Front Burner Injector, Propane/LP • 1 13 112708-01 Remote Burner Tube • • • • 1 14 M12461-26 Screw • • • • 5 15 099918-02 Pilot Regulator, Natural Gas • • 1 16 099387-12 Pilot Tube, Natural Gas • • 1

099387-09 Pilot Tube, Propane/LP • • 1 17 098264-02 Male Fitting • • • • 1 18 101329-21 Gas Control Valve (NG) • • 1

101329-30 Gas Control Valve (LP) • • 1 19 103784-01 Control Knob Extension • • • • 1 20 103784-02 Flame Adjustment Knob Extension • • • • 1 21 111173-01 Remote Valve Bracket • • • • 1 22 112715-01 Remote Knob Heat Shield • • • • 1 23 098271-12 Ignitor Cable • • • • 1 24 100609-01 Pilot Tube, Natural Gas • 1

099387-14 Pilot Tube, Natural Gas • 1

PARTS AVAILABLE NOT SHOWN

112717-01 Remote Sensor Bracket • • • • 1

100563-01 Warning Plate • • • • 1

103877-01 Lighting Instruction Plate • • • • 1

100639-02 Caution Decal • • • • 1

101137-02 Hardware Kit • • • • 1

GA6060 Lava Rock • • • • 1

** Not a eld replaceable part.

VUL18NR

VUL18PR

VUL24/30NR

VUL24P/30PR

119426-01A 39

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Page 40

ILLUSTRATED PARTS bREAkDOWN

REMOTE-READY VARIABLE CONTROL MODELS CRB2618NR, CRB2618PR, CRB3624NR, CRB3624PR, CRB3630NR, CRB3630PR, HRB3624NR AND HRB3624PR

www.desatech.com

119426-01A40

Page 41

PARTS LIST

REMOTE-READY VARIABLE CONTROL MODELS

This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Replacement Parts on page 42 of this manual.

KEY NO. PART NO. DESCRIPTION QTY.

HRB3924NR/

CRB2618NR

CRB2618PR

CRB3624/30NR

HRB3924PR/

CRB3924/30PR

1 ** Ramp Burner Assembly • • • • 1 2 111435-01 Electronic Ignitor • • • • 1 3 112465-01 Ramp Front Burner • • 1

112465-02 Ramp Front Burner • • 1

4 113242-01 Ramp Back Burner Kit • • 1

113242-02 Ramp Back Burner Kit • • 1

5 103779-01 O.D.S. Pilot, Natural Gas • • 1

103778-01 O.D.S. Pilot, Propane/LP Gas • • 1

6 112713-01 Pilot Bracket, Natural Gas • • 1

112713-03 Pilot Bracket, Propane/LP Gas • • 1 7 098249-01 Nut, ODS • • • • 2 8 M11084-26 Screw • • • • 8 9 112782-01 Air Deactor Bracket • • 1

112782-02 Air Deactor Bracket • • 1 10 101480-12 Jumper Wire • • • • 1 11 101004-11 Rear Burner Injector, Natural • 1

101004-10 Rear Burner Injector, Propane/LP • 1

101004-04 Rear Burner Injector, Natural • 1

101004-02 Rear Burner Injector, Propane/LP • 1 12 101004-11 Front Burner Injector, Natural • 1

101004-10 Front Burner Injector, Propane/LP • 1

101004-08 Front Burner Injector, Natural • 1

099387-09 Pilot Tube, Propane/LP • • 1 17 098264-02 Male Fitting • • • • 1 18 103781-01 Gas Control Valve (NG) • • 1

103781-02 Gas Control Valve (LP) • • 1 19 103784-01 Control Knob Extension • • • • 1 20 103784-02 Flame Adjustment Knob Extension • • • • 1 21 111173-01 Remote Valve Bracket • • • • 1 22 112715-01 Remote Knob Heat Shield • • • • 1 23 098271-12 Ignitor Cable • • • • 1 24 100609-01 Pilot Tube, Natural Gas • 1

099387-14 Pilot Tube, Natural Gas • 1

112717-01 Remote Sensor Bracket • • • • 1

PARTS AVAILABLE NOT SHOWN

100563-01 Warning Plate • • • • 1

103877-01 Lighting Instruction Plate • • • • 1

100639-02 Caution Decal • • • • 1

101137-02 Hardware Kit • • • • 1

GA6060 Lava Rock • • • • 1

111910-01 Thermostat Remote Kit • • • • 1

** Not a eld replaceable part.

119426-01A 41

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Page 42

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 propane/LP or natural gas supplier.

TECHNICAL SERVICE

You may have further questions about installation, operation or troubleshooting. If so, contact DESA Heating Products’ 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 Products’ technical 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 can’t supply original replacement part(s), call DESA Heating Products’ Technical Service Department at 1-866-672-6040.

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. If they can’t 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

ACCESSORIES

Purchase these heater accessories from your local dealer. If they can not supply these accessories, call DESA Heating Products 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.

FIREPLACE HOOD

Black - GA6050 Brass - GA6052 Antique Brass - GA6053

For all models. Helps deect heat away from mantel or wall above replace. Fits openings 28" to 48" wide.

www.desatech.com

119426-01A42

Page 43

ACCESSORIES

Continued

RECEIVER AND HAND-HELD THERMOSTAT REMOTE CONTROL KIT - HRC200

For all Remote-Ready Models. Allows the replace to be operated in a manually or thermostatically controlled mode. You can turn the 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 Remote-Ready Models. Allows the replace to be turned on and off by using a hand-held remote control. A wall-mount docking station is included.

WALL-MOUNT THERMOSTAT SWITCH - GWMT1

(Not Shown)

For all Remote-Ready Models. The desired comfort setting can be selected on the wall thermostat and the log heater will automatically cycle from pilot to the heat setting selected.

WALL-MOUNT ON/OFF SWITCH GWMS2

(Not Shown)

For all Remote-Ready Models. Allows the gas log heater to be turned on and off with a wall switch.

VENT-FREE LOGMATE® FIREBOXES

(Not Shown)

Available in 32", 36" and 42" models. Circulating reboxes feature louvers and an optional blower. Non-circulating, smooth face models are ideal for custom trim applications such as stone or marble.

FB32C (CIRCULATING), FB32NC (NON-CIRCULATING) SERIES FIREBOXES

(Not Shown)

For 18" and 24" log models.

FB36CA, FB42C SERIES CIRCULATING), FB36NCA, FB42NC SERIES FIREBOXES (NON-CIRCULATING)

(Not Shown)

For all log models.

DAMPER CLAMP - GA6080

(Not Shown)

For Remote-Ready Models. Permanently opens chimney ue damper for vented operation.

LAVA ROCK - GA6060

(Not Shown)

For all models. Order when additional rock is desired. (1.8 lb. bag)

CLEANING KIT - GCK

(Not Shown)

For all models. 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

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.

FIRE CRACKLE - CF6-A

(Not Shown)

For all models. Creates the sound of a real burning re.

119426-01A 43

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Page 44

WARRANTy INFORMATION

119426 01

kEEP THIS WARRANTy

Model

Serial No.

Date Purchased

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

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

LIMITED WARRANTy

VENT-FREE GAS LOG HEATERS

DESA Heating Products warrants this product to be free from defects in materials and components for four (4) years from the date of rst 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 qualied installer in accordance with all local codes and instructions furnished with the unit.

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

TO THE FULL EXTENT ALLOWED BY THE LAW OF THE JURISDICTION THAT GOVERNS THE SALE OF THE PRODUCT; THIS EXPRESS WARRANTY EXCLUDES ANY AND ALL OTHER EXPRESSED WARRANTIES AND LIMITS THE DURATION OF ANY AND ALL IMPLIED WARRANTIES, INCLUDING WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE TO FOUR (4) YEARS ON ALL COMPONENTS FROM THE DATE OF FIRST PURCHASE; AND DESA HEATING PRODUCTS’ 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 specic legal rights and you may also have other rights that vary from state to state. For information about this warranty write:

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

NOT A UPC

119426-01 Rev. A 05/06

Desa HRB3624 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

SAFETy INFORMATION

LOCAL CODES

PRODUCT FEATURES

INSTALLATION

OPERATING HEATER

INSPECTING bURNERS

WIRING DIAGRAM

TROUbLESHOOTING

SPECIFICATIONS

ILLUSTRATED PARTS bREAkDOWN AND PARTS LIST

SERVICE HINTS

TECHNICAL SERVICE

REPLACEMENT PARTS

ACCESSORIES

WARRANTy INFORMATION