Desa 24" Variably-Controlled Models Quick start guide

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UNVENTED (VENT-FREE) GAS LOG HEATER

OWNER’S OPERATION AND INSTALLATION MANUAL

Biltmore Split Oak, Seasonal Oak and Smoky Mountain Oak Logs

Variable Manually-Controlled Models Also

Design-Certiﬁed As Vented Decorative Appliances

18", 24" AND 30" VARIABLE

MANUALLY-CONTROLLED

MODELS

CRL2718PA/NA

CRL3124PA/NA

CCL3018PA/NA

CCL3924PA/NA

18", 24" AND 30"

THERMOSTATICALLY-CONTROLLED

MODELS

CCL3018PTA/NTA

CCL3924PTA/NTA

CCL3930PTB/NTB

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

lowed exactly, a ﬁre or explosion may result causing

property damage, personal injury or loss of life.

— Do not store or use gasoline or other ﬂammable

vapors and liquids in the vicinity of this or any other

appliance.

— WHAT TO DO IF YOU SMELL GAS

• Do not try to light any appliance.

• Do not touch any electrical switch; do not use any

phone in your building.

•

Immediately call your gas supplier from a neighbor’s

phone. Follow the gas supplier’s instructions.

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

department.

— Installation and service must be performed by a quali-

ﬁed installer, service agency or the gas supplier.

Patent Pending

REMOTE

OFF

www.desatech.com 113097-01C

WARNING: Improper installation, adjustment, altera-

tion, service or maintenance can cause injury or prop-

erty damage. Refer to this manual for correct installation

and operational procedures. For assistance or addi-

tional information consult a qualiﬁed installer, service

agency or the gas supplier.

WARNING: This appliance is for installation only in a

solid-fuel burning masonry or UL127 factory-built ﬁre-

place or in a listed ventless ﬁrebox enclosure. It is de-

sign-certiﬁed 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-ﬁred heater. It uses

air (oxygen) from the room in which it is installed. Provi-

sions for adequate combustion and ventilation air must

be provided. Refer to Air for Combustion and Ventilation

section on page 5 of this manual.

This appliance may be installed in an aftermarket,* per-

manently located, manufactured (mobile) home, where

not prohibited by local codes.

This appliance is only for use with the type of gas indi-

cated on the rating plate. This appliance is not convert-

ible for use with other gases.

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

TABLE OF CONTENTS

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

Local Codes ........................................................ 4

Product Identiﬁcation ........................................... 5

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

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

Air for Combustion and Ventilation ...................... 5

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

Operating Heater ............................................... 19

Inspecting Burners ........................................... 23

Cleaning and Maintenance ................................ 23

Service Hints ..................................................... 24

Technical Service .............................................. 24

Troubleshooting ................................................. 25

Optional Positioning of Thermostat Sensing Bulb

.. 28

Speciﬁcations .................................................... 29

Illustrated Parts Breakdown and Parts List ....... 30

Replacement Parts ............................................ 38

Accessories ....................................................... 38

Parts Central ..................................................... 39

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

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113097-01C 3

SAFETY INFORMATION

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.

IMPORTANT: Read this owner’s

manual carefully and completely

before trying to assemble,

operate or service this heater.

Improper use of this heater can

cause serious injury or death

from burns, fire, explosion,

electrical shock and carbon

monoxide poisoning.

DANGER: Carbon monoxide

poisoning may lead to death!

Carbon Monoxide Poisoning: Early signs of carbon

monoxide poisoning resemble the ﬂu, with head-

aches, dizziness or nausea. If you have these signs,

the heater may not be working properly. Get fresh

air at once! Have heater serviced. Some people

are more affected by carbon monoxide than others.

These include pregnant women, people with heart

or lung disease or anemia, those under the inﬂuence

of alcohol and those at high altitudes.

Natural and Propane/LP Gas: Natural and pro-

pane/LP gases are odorless. An odor-making agent

is added to the gas. The odor helps you detect a gas

leak. However, the odor added to the gas can fade.

Gas may be present even though no odor exists.

Make certain you read and understand all warn-

ings. Keep this manual for reference. It is your

guide to safe and proper operation of this heater.

WARNING: Any change to

this heater or its controls can

be dangerous.

WARNING: Do not allow fans

to blow directly into the ﬁreplace.

Avoid any drafts that alter burner

ﬂame patterns. Ceiling fans can

create drafts that alter burner

ﬂame patterns. Altered burner

patterns can cause sooting.

WARNING: Do not use a blow-

er insert, heat exchanger insert

or other accessory not approved

for use with this heater.

Due to high temperatures, the

appliance should be located out

of trafﬁc and away from furniture

and draperies.

Do not place clothing or other

ﬂammable material on or near

the appliance. Never place any

objects on the heater.

Heater base assembly becomes

very hot when running heater.

Keep children and adults away

from hot surface to avoid burns

or clothing ignition. Heater

will remain hot for a time after

shutdown. Allow surface to cool

before touching.

Carefully supervise young chil-

dren when they are in the room

with heater.

You must operate this heater

with a ﬁreplace screen in place.

Make sure ﬁreplace screen is

closed before running heater.

Keep the appliance area clear

and free from combustible ma-

terials, gasoline and other ﬂam-

mable vapors and liquids.

1. This appliance is only for use with the type

of gas indicated on the rating plate. This ap-

pliance is not convertible for use with other

gases.

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

any structure. Locate propane/LP supply

tank(s) outdoors (propane/LP units only).

3. To prevent performance problems, do not use

propane/LP fuel tank of less than 100 lbs.

capacity (propane/LP units only).

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4. If you smell gas

• shut off gas supply

• do not try to light any appliance

• do not touch any electrical switch; do not

use any phone in your building

• immediately call your gas supplier from

a neighborʼs phone. Follow the gas

supplierʼs instructions

• if you cannot reach your gas supplier, call

the ﬁre department

5. This heater shall not be installed in a bedroom

or bathroom unless installed as a vented appli-

ance (Variable Manually-Controlled Models

Only) (see Installing Damper Clamp Acces-

sory for Vented Operation, page 11).

6. Before installing in a solid fuel burning

ﬁreplace, the chimney ﬂue and ﬁrebox must

be cleaned of soot, creosote, ashes and loose

paint by a qualiﬁed chimney cleaner. Creosote

will ignite if highly heated. A dirty chimney

ﬂue may create and distribute soot within

the house. Inspect chimney ﬂue for damage.

If damaged, repair ﬂue and ﬁrebox before

operating heater.

7. Do not burn solid-fuel in a masonry or UL127

factory-built ﬁreplace in which a vent-free

room heater is installed.

If ﬁreplace has glass doors, never operate this

heater with glass doors closed. If you operate

heater with doors closed, heat buildup inside ﬁre-

place will cause glass to burst. Make sure there are

no obstructions across openings of ﬁreplace.

This log heater is designed to be smokeless. If

logs ever appear to smoke, turn off heater and

call a qualiﬁed service person. Note: During

initial operation, slight smoking could occur

due to log curing and heater burning manufac-

turing residues.

10.

To prevent the creation of soot, follow the instruc-

tions in Cleaning and Maintenance, page 23.

11. Before using furniture polish, wax, carpet

cleaner or similar products, turn heater off. If

heated, the vapors from these products may

create a white powder residue within burner

box or on adjacent walls or furniture.

12. This heater needs fresh, outside air ventilation

to run properly. This heater has an Oxygen De-

pletion Sensing (ODS) safety shutoff system.

The ODS shuts down the heater if not enough

fresh air is available. See Air for Combustion

and Ventilation, page 5. If heater keeps shutting

off, see Troubleshooting, page 25.

13. Do not run heater

• where ﬂammable liquids or vapors are

used or stored

• under dusty conditions

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

paper or other objects.

15. Do not use heater if any part has been exposed

to or under water. Immediately call a qualiﬁed

service technician to inspect the room heater

and to replace any part of the control system and

any gas control which has been under water.

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

not operate heater if a log is chipped (dime-

sized or larger).

17. Turn heater off and let cool before servicing.

Only a qualiﬁed service person should service

and repair heater.

18. Operating heater above elevations of 4,500

feet could cause pilot outage.

19.

Provide adequate clearances around air

openings.

LOCAL CODES

Install and use heater with care. Follow all local

codes. In the absence of local codes, use the lat-

est edition of The National Fuel Gas Code, ANSI

Z223.1/NFPA 54*.

*Available from:

American National Standards Institute, Inc.

1430 Broadway

New York, NY 10018

National Fire Protection Association, Inc.

Batterymarch Park

Quincy, MA 02269

Note: Where listed vented decorative logs are

required, thermostat operation is not permitted.

SAFETY INFORMATION

Continued

State of Massachusetts: The installa-

tion must be made by a licensed plumber

or gas fitter in the Commonwealth of

Massachusetts.

Sellers of unvented propane or natural

gas-ﬁred supplemental room heaters shall

provide to each purchaser a copy of 527

CMR 30 upon sale of the unit.

Vent-free gas products are prohibited for

bedroom and bathroom installation in the

Commonwealth of Massachusetts.

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113097-01C 5

Figure 1 - Vent-Free Gas Log Heater

(Logs May Vary by Model, Seasonal Oak

Single Burner Model Shown)

Base

Grate

Log Set

Control Knob

Burner

Piezo

Ignitor

PRODUCT

IDENTIFICATION

PRODUCT FEATURES

OPERATION

This heater is clean burning. It requires no outside

venting. There is no heat loss out a vent or up a

chimney. Heat is generated by realistic dancing,

yellow ﬂames. This heater is designed for vent-free

operation with ﬂue 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 ﬂue damper

(non-thermostat operation only).

SAFETY PILOT

This heater has a pilot with an Oxygen Deple-

tion Sensing (ODS) safety shutoff system. The

ODS/pilot is a required feature for vent-free room

heaters. The ODS/pilot shuts off the heater if there

is not enough fresh air.

PIEZO IGNITION SYSTEM

This heater has a piezo ignitor. This system re-

quires no matches, batteries or other sources to

light heater.

AIR FOR COMBUSTION

AND VENTILATION

WARNING: This heater shall

not be installed in a conﬁned

space or unusually tight con-

struction unless provisions are

provided for adequate combus-

tion and ventilation air. Read the

following instructions to insure

proper fresh air for this and

other fuel-burning appliances

in your home.

Todayʼs homes are built more energy efﬁcient

than ever. New materials, increased insulation and

new construction methods help reduce heat loss

in homes. Home owners weather strip and caulk

around windows and doors to keep the cold air out

and the warm air in. During heating months, home

owners want their homes as airtight as possible.

While it is good to make your home energy efﬁ-

cient, your home needs to breathe. Fresh air must

enter your home. All fuel-burning appliances need

fresh air for proper combustion and ventilation.

UNPACKING

CAUTION: Do not remove

the data plates from the grate as-

sembly. The data plates contain

important product information.

1. Remove logs and heater base assembly from

carton. Note: Do not pick up heater base as-

sembly 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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Exhaust fans, ﬁreplaces, clothes dryers and fuel

burning appliances draw air from the house to

operate. You must provide adequate fresh air for

these appliances. This will insure proper venting

of vented fuel-burning appliances.

PROVIDING ADEQUATE

VENTILATION

The following are excerpts from National Fuel

Gas Code, ANSI Z223.1/NFPA 54, Section 5.3,

Air for Combustion and Ventilation.

All spaces in homes fall into one of the three fol-

lowing ventilation classiﬁcations:

1. Unusually Tight Construction

2. Unconﬁned Space

3. Conﬁned Space

The information on pages 5 through 7 will help

you classify your space and provide adequate

ventilation.

Unusually Tight Construction

The air that leaks around doors and windows

may provide enough fresh air for combustion and

ventilation. However, in buildings of unusually

tight construction, you must provide additional

fresh air.

Unusually tight construction is deﬁned

as construction where:

a. walls and ceilings exposed to the out-

side atmosphere have a continuous

water vapor retarder with a rating of

one perm (6x10-11 kg per pa-sec-m2) or

less with openings gasketed or sealed

and

b. weather stripping has been added on

openable windows and doors and

c. caulking or sealants are applied to

areas such as joints around window

and door frames, between sole plates

and ﬂoors, between wall-ceiling joints,

between wall panels, at penetrations

for plumbing, electrical and gas lines

and at other openings.

If your home meets all of the three criteria

above, you must provide additional fresh

air. See Ventilation Air From Outdoors,

page 7.

If your home does not meet all of the three

criteria above, proceed to Determining

Fresh-Air Flow for Heater Location.

Conﬁned and Unconﬁned Space

National Fuel Gas Code, ANSI Z223.1/NFPA

54 deﬁnes a conﬁned space as a space whose

volume is less than 50 cubic feet per 1,000 Btu

per hour (4.8 m3 per kw) of the aggregate input

rating of all appliances installed in that space and

an unconﬁned space as a space whose volume is

not less than 50 cubic feet per 1,000 Btu per hour

(4.8 m3 per kw) of the aggregate input rating of

all appliances installed in that space. Rooms com-

municating directly with the space in which the

appliances are installed*, through openings not

furnished with doors, are considered a part of the

unconﬁned space.

* Adjoining rooms are communicating only if

there are doorless passageways or ventilation grills

between them.

DETERMINING FRESH-AIR FLOW

FOR HEATER LOCATION

Determining if You Have a Conﬁned or

Unconﬁned Space

Use this work sheet to determine if you have a

conﬁned or unconﬁned space.

Space: Includes the room in which you will install

ﬁreplace plus any adjoining rooms with doorless pas-

sageways or ventilation grills between the rooms.

1. Determine the volume of the space (length x

width x height).

Length x Width x Height =__________cu. ft.

(volume of space)

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

(width) x 8 ft. (ceiling height) = 2,560 cu. ft.

(volume of space)

If additional ventilation to adjoining room is

supplied with grills or openings, add the volume

of these rooms to the total volume of the space.

2. Multiply the space volume by 20 to determine

the maximum Btu/Hr the space can support.

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

mum Btu/Hr the space can support)

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

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

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

the space.

Vent-free ﬁreplace __________ Btu/Hr

Gas water heater* __________ Btu/Hr

Gas furnace __________ Btu/Hr

Vented gas heater __________ Btu/Hr

Gas ﬁreplace logs __________ Btu/Hr

Other gas appliances* + ________ Btu/Hr

Total = ________ Btu/Hr

* Do not include direct-vent gas appliances. Di-

rect-vent draws combustion air from the outdoors

and vents to the outdoors.

AIR FOR COMBUSTION

AND VENTILATION

Continued

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113097-01C 7

Example:

Gas water heater ____________ Btu/Hr

Vent-free ﬁreplace + ___________ Btu/Hr

Total = ___________ Btu/Hr

4. Compare the maximum Btu/Hr the space can

support with the actual amount of Btu/Hr used.

_________

Btu/Hr (maximum the space can support)

_________

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

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

can support)

79,000 Btu/Hr (actual amount of

Btu/Hr used)

The space in the example is a conﬁned space because

the actual Btu/Hr used is more than the maximum

Btu/Hr the space can support. You must provide ad-

ditional fresh air. Your options are as follows:

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

ing room. If the extra space provides an unconﬁned

space, remove door to adjoining room or add

ventilation grills between rooms. See Ventilation

Air From Inside Building.

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

tion Air From Outdoors.

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

size makes room unconﬁned.

If the actual Btu/Hr used is less than the maximum

Btu/Hr the space can support, the space is an un-

conﬁned space. You will need no additional fresh

air ventilation.

WARNING: If the area in

which the heater may be oper-

ated is smaller than that deﬁned

as an unconﬁned space or if the

building is of unusually tight

construction, provide adequate

combustion and ventilation air

by one of the methods described

in the National Fuel Gas Code,

ANSI Z223.1/NFPA 54 Section 5.3

or applicable local codes.

VENTILATION AIR

Ventilation Air From Inside Building

This fresh air would come from an adjoining un-

conﬁned space. When ventilating to an adjoining

unconﬁned space, you must provide two perma-

nent openings: one within 12" of the ceiling and

one within 12" of the ﬂoor on the wall connecting

the two spaces (see options 1 and 2, Figure 2). You

can also remove door into adjoining room (see

option 3, Figure 2). Follow the National Fuel Gas

Code, ANSI Z223.1/NFPA 54, Section 5.3, Air for

Combustion and Ventilation for required size of

ventilation grills or ducts.

AIR FOR COMBUSTION

AND VENTILATION

Continued

40,000

39,000

79,000

Figure 3 - Ventilation Air from Outdoors

Figure 2 - Ventilation Air from Inside

Building

Outlet

Air

Ventilated

Attic

Outlet

Inlet

Air

Inlet Air Ventilated

Crawl Space

Crawl

Space

To Attic

Remove

Door into

Adjoining

Room,

Option

Ventilation Grills

Into Adjoining Room,

Option 2

Ventilation

Grills

Into Adjoining

Room,

Option 1

12"

Ventilation Air From Outdoors

Provide extra fresh air by using ventilation grills or

ducts. You must provide two permanent openings:

one within 12" of the ceiling and one within 12"

of the ﬂoor. Connect these items directly to the

outdoors or spaces open to the outdoors. These

spaces include attics and crawl spaces. Follow the

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

Section 5.3, Air for Combustion and Ventilation for

required size of ventilation grills or ducts.

IMPORTANT: Do not provide openings for inlet

or outlet air into attic if attic has a thermostat-

controlled power vent. Heated air entering the attic

will activate the power vent.

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INSTALLATION

NOTICE: This heater is intended

for use as supplemental heat.

Use this heater along with your

primary heating system. Do not

install this heater as your pri-

mary heat source. If you have a

central heating system, you may

run system’s circulating blower

while using log heater. This will

help circulate the heat from your

log heater throughout the house.

In the event of a power outage,

you can use this heater as your

primary heat source.

WARNING: A qualiﬁed ser-

vice person must install heater.

Follow all local codes.

NOTICE: State or local codes may

only allow operation of this appli-

ance in a vented conﬁguration.

Check your state or local codes.

WARNING: Before installing

in a solid fuel burning ﬁreplace,

the chimney ﬂue and ﬁrebox

must be cleaned of soot, creo-

sote, ashes and loose paint by

a qualified chimney cleaner.

Creosote will ignite if highly

heated. A dirty chimney ﬂue may

create and distribute soot within

house. Inspect chimney ﬂue and

ﬁrebox for damage. If damaged,

repair ﬂue and ﬁrebox before

operating heater.

WARNING: Seal any fresh

air vents or ash clean-out doors

located on ﬂoor or wall of ﬁre-

place. If not, drafting may cause

pilot outage or sooting. Use a

heat-resistant sealant. Do not

seal chimney ﬂue damper.

WARNING: Never install the

heater

• in a bedroom or bathroom

unless installed as a vented

appliance (Variable Manually-

Controlled Models Only) (see

page 11)

• in a recreational vehicle

• where curtains, furniture,

clothing or other ﬂammable

objects are less than 42 inches

from the front, top or sides of

the heater

• in high trafﬁc areas

• in windy or drafty areas

CAUTION: This heater 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 ﬂu-

ids, 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 beneﬁcial, installing heater

in rooms without enough ventilation air may cause

mildew to form from too much moisture. See Air

for Combustion and Ventilation, page 5.

CHECK GAS TYPE

Use the correct gas type (natural or propane/LP)

for your unit. If your gas supply is not correct, do

not install heater. Call dealer where you bought

heater for proper type heater.

WARNING: This appliance

is equipped for (natural or pro-

pane/LP) gas. Field conversion

is not permitted.

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113097-01C 9

INSTALLATION AND CLEARANCES

(Vent-Free Operation Only)

WARNING: Maintain the

minimum clearances. If you

can, provide greater clearances

from ﬂoor, ceiling and adjoining

wall.

MINIMUM FIREPLACE CLEARANCE

TO COMBUSTIBLE MATERIALS

Log Size Side Wall Ceiling

18", 24", 30" 16" 42"

LOG SIZING REQUIREMENTS

Minimum Firebox

Log Front Rear *

Size Height Depth Width Width

18" 17" 14" 24" 20"

24" 17" 14" 28" 21"

30" 17" 14" 34" 24"

* Measured at 14" depth.

Carefully follow the instructions below. This will

ensure safe installation into a masonry, UL127-

listed manufactured ﬁreplace or certiﬁed vent-free

ﬁrebox.

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 combus-

tible material must be 4" from the side of the

ﬁreplace opening (see Figure 4).

Note: When installing your gas logs into

a manufactured firebox, follow firebox

manufacturerʼs 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 inches.

INSTALLATION

Continued

Figure 4 - Minimum Clearance for

Combustible to Wall

*Minimum 16 inches from Side Wall

Example

NOTICE: Manual control heaters

may be used as a vented product.

If so, you must always run heater

with chimney ﬂue damper open.

If running heater with damper

open, noncombustible material

above ﬁreplace opening is not

needed. Go to Installing Damper

Clamp Accessory for Vented

Operation, page 11.

Minimum Noncombustible Material

Clearances

If Not Using Mantel

Note: If using a mantel, proceed to If Using

Mantel, page 10. If not using a mantel, follow the

information below.

You must have noncombustible material(s) above

the ﬁreplace opening. Noncombustible materials

(such as slate, marble, tile, etc.) must be at least

1/2 inch thick. With sheet metal, you must have

noncombustible material behind it. Noncombus-

tible material must extend at least 8" up (for all

models). If noncombustible material is less than

12", you must install the ﬁreplace hood accessory

(24" and 30" models only). See Figure 5, page 10

for minimum clearances.

IMPORTANT: If you cannot meet these minimum

clearances, you must operate heater with chimney

ﬂue damper open. Go to Installing Damper Clamp

Accessory for Vented Operation, page 11.

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If Using Mantel

You must have noncombustible material(s) above

the ﬁreplace opening. Noncombustible materials

(such as slate, marble, tile, etc.) must be at least

1/2 inch thick. With sheet metal, you must have

noncombustible material behind it. Noncombus-

tible material must extend at least 8" up (for all

models). If noncombustible material is less than

12", you must install the ﬁreplace hood accessory

(24" and 30" models only). Even if noncombus-

tible material is more than 12", you may need the

hood accessory to deﬂect heat away from your

mantel shelf. See Figure 5 and 6 and Figure 7 on

page 11 for minimum clearances.

MANTEL CLEARANCES

In addition to meeting noncombustible material

clearances, you must also meet required clearances

between ﬁreplace opening and mantel shelf. If

you do not meet the clearances in Figure 6 you

will need a hood.

Determining Minimum Mantel Clearance

If you meet minimum clearance between mantel

shelf and top of ﬁreplace opening, a hood is not

required (see Figure 6).

Determining Minimum Mantel Clearance

When Using a Hood

If minimum clearances in Figure 6 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.

NOTICE: Surface temperatures

of adjacent walls and mantels be-

come hot during operation. Walls

and mantels above the ﬁrebox

may become hot to the touch.

If installed properly, these tem-

peratures meet the requirement

of the national product standard.

Follow all minimum clearances

shown in this manual.

INSTALLATION

Continued

Noncombustible Requirements for

Material Safe Installation

Distance (A)

12" or more Noncombustible material

okay.

Between 8" 24", 30" or 36" Models:

and 12" Install ﬁreplace hood

accessory (GA6050,

GA6052 or GA6053 see

Accessories, page 38).

18" Model: Noncombus-

tible material okay.

Less than 8" Noncombustible material

must be extended to at

least 8". See Between 8"

and 12", above. If you

cannot extend material,

you must operate heater

with ﬂue damper open.

IMPORTANT: If you cannot meet these minimum

clearances, you must operate heater with chimney

ﬂue damper open. Go to Installing Damper Clamp

Accessory for Vented Operation, page 11.

Heat Resistant

Material

(A)

Figure 5 - Heat Resistant Material (Slate,

Marble, Tile, etc.) Above Fireplace Figure 6 - Minimum Mantel Clearances

Without Using Hood

Minimum

Noncombustible

Material

Minimum

Noncombustible

Material Height

Distances to

Underside of

Mantel

Top of Fireplace

Opening

Underside

of Mantel

Shelf

Mantel Shelf

12"

(A)

18"

20"

14"

22"

17"

24"

20"

All minimum

distances

are in inches

Log Set

24"/30"

Models

18" Model

1/2

10"

Other manuals for 24" Variably-Controlled Models

This manual suits for next models

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