Desa HRB3624 User Manual

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

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

www.desatech.com

119426-01A2

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.

119426-01A 3

www.desatech.com

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

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.

www.desatech.com

119426-01A4

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.

119426-01A 5

www.desatech.com

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.

www.desatech.com

119426-01A6

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

www.desatech.com

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

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-

www.desatech.com

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

119426-01A8

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"

119426-01A 9

www.desatech.com

*Minimum 16" from Side Wall

Figure 4 - Minimum Clearance for

Combustible to Wall

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.

www.desatech.com

119426-01A10

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

www.desatech.com

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

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

www.desatech.com

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

www.desatech.com

119426-01A14

+ 30 hidden pages