Comfort Glow CRL2718NA, CRL3124PA, CRL3124NA, CCL3018NA, CCL3924NA Owner's Operation And Installation Manual

UNVENTED (VENT-FREE) GAS LOG HEATER

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OWNER’S OPERATION AND INSTALLATION MANUAL

Patent Pending

18", 24" AND 30" VARIABLE

MANUALLY-CONTROLLED

MODELS
CRL2718PA/NA
CRL3124PA/NA
CCL3018PA/NA

THERMOSTATICALLY-CONTROLLED

18", 24" AND 30"

MODELS
CCL3018PTA/NTA
CCL3924PTA/NTA
CCL3930PTB/NTB

CCL3924PA/NA

Biltmore Split Oak, Seasonal Oak and Smoky Mountain Oak Logs

Variable Manually-Controlled 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

CONTENTS

Safety Informa ion ............................................... 2

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

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

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

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

Air for Combustion and Ventila ion ...................... 5

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

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

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

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

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

SAFETY INFORMATION

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

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

Optional Positioning of Thermostat

Sensing Bulb ............................................... 28

Specications .................................................... 29

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

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

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

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

Warranty Information ............................ Back Page

WARNING: Improper in­stallation, adjustment, al-

teration, service or main­tenance can cause in-

jury or property damage.

Refer to this manual for
correct installation and

operational procedures.

For assistance or addi­tional information con-

sult 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
replace 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 5

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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113097-01H2

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.

IMPORTANT: Read this owner’s
manual carefully and completely
be f o r e trying to a s s e mble,
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 u, with head­aches, 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 inuence
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 warn­ings. 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 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.

WARNING: Do not use a blow­er 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 trafc and away from furniture
and draperies.

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

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

will remain hot for a time after

shutdown. Allow surface to cool
before touching.

Carefully supervise young chil-

dren when they are in the room

with heater.

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

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

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

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

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

113097-01H 3

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SAFETY INFORMATION

Continued

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 neighb or’ s phone. Fo ll ow the gas
supplier’s instructions

• if you cannot reach your gas supplier, call
the re department

5. This heater shall not be installed in a bedroom
or bathroom unless installed as a vented appli­ance (Variable Manually-Controlled Models
Only) (see Installing Damper Clamp Acces-
sory for Vented Operation, page 11). This
gas log set may not be installed as a vented

appliance in a bedroom or bathroom in the

Commonwealth of Massachusetts.

6. 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.

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

8.

If replace has glass doors, never operate this
heater with glass doors closed. If you operate
heater with doors closed, heat buildup inside re­place will cause glass to burst. Make sure there are
no obstructions across openings of replace.

9.

This log heater is designed to be smokeless. If
logs ever appear to smoke, turn off heater and
call a qualied service person. Note: During
initial operation, slight smoking could occur
due to log curing and heater burning manufac­turing residues.

10.

To prevent the creation of soot, follow the instruc­tions in Cleaning and Maintenance, page 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 De­pletion Sensing (ODS) safety shutoff system.
The ODS shuts down the heater if not enough
fresh air is available. See Air for Combustion
and Ventilation, page 5. If heater keeps shutting
off, see Troubleshooting, page 25.

13. Do not run heater

• where ammable liquids or vapors are
used or stored

• under dusty conditions

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

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

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

17. Turn heater off and let cool before servicing.
Only a qualied service person should service
and repair heater.

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

19.

Provide adequate clear ances around a ir
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.

National Fire Protection Association, Inc.

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

State of Massachusetts: The installa-

tion 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.

1430 Broadway

New York, NY 10018

Batterymarch Park

Quincy, MA 02269

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113097-01H4

PRODUCT

IDENTIFICATION

Log Set

Burner

Piezo
Ignitor

Control Knob

Base
Grate

Figure 1 - Vent-Free Gas Log Heater

(Logs May Vary by Model, Seasonal Oak

Single Burner Model Shown)

UNPACKING

CAUTION: Do not remove

the data plates from the grate as­sembly. The data plates contain
important product 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.

PRODUCT FEATURES

OpERATION

This heater is clean burning. It requires no outside
venting. There is no heat loss out a vent or up a
chimney. Heat is generated by realistic dancing,
yellow ames. This heater is designed for vent-free
operation with ue damper closed. It has been
tested and approved to ANSI Z21.11.2 standard
for unvented heaters. State and local codes in some
areas prohibit the use of vent-free heaters. This
heater may also be operated as a vented decorative
(ANSI Z21.60) product by opening the ue damper
(non-thermostat operation only).

SAFETY pILOT

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

pIEzO IGNITION SYSTEM

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

AIR FOR COMBUSTION

AND VENTILATION

WARNING: This heater shall

not be installed in a 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.

113097-01H 5

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AIR FOR COMBUSTION

AND VENTILATION

Continued

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 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 dened

as construction where:

a. walls and ceilings exposed to the out-

side atmosphere have a continuous
water vapor retarder with a rating of
one perm (6x10
less with openings gasketed or sealed

and

b. weather stripping has been added on

openable windows and doors and

c. caulking or sealants are applied to

areas such as joints around window
and door frames, between sole plates
and oors, between wall-ceiling joints,
between wall panels, at penetrations
for plumbing, electrical and gas lines
and at other openings.

If your home meets all of the three criteria

above, you must provide additional fresh
air. See Ventilation Air From Outdoors,
page 7.

If your home does not meet all of the three

criteria above, proceed to Determining
Fresh-Air Flow for Heater Location.

-11

kg per pa-sec-m2) or

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Conned and Unconned Space

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.

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.

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) = 2,560 cu. ft.
(volume of space)

If additional ventilation to adjoining room is

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

2. Multiply the space volume by 20 to determine
the maximum Btu/Hr the space can support.

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

mum Btu/Hr the space can support)

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

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

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

Vent-free replace __________ Btu/Hr

Gas water heater* __________ Btu/Hr

Gas furnace __________ Btu/Hr

Vented gas heater __________ Btu/Hr

Gas replace logs __________ Btu/Hr

Other gas appliances* + ________ Btu/Hr

Total = ________ Btu/Hr

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

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

113097-01H6

AIR FOR COMBUSTION

Outlet
Air

Ventilated
Attic

Outlet
A

ir

Inlet
Air

Inlet Air

Ventilated

Crawl Space

To

Crawl

Space

To Attic

Or

Remove
Door into
Adjoining

Room,
Option

3

Ventilation Grills

Into Adjoining Room,

Option 2

Ventilation

Grills

Into Adjoining

Room,

Option 1

12"

12"

AND VENTILATION

Continued

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

can support)

79,000 Btu/Hr (actual amount of

Btu/Hr used)

The space in the example is a conned space because
the actual Btu/Hr used is more than the maximum
Btu/Hr the space can support. You must provide ad­ditional fresh air. Your options are as follows:

A. Rework worksheet, adding the space of an 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.

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.

40,000

39,000

79,000

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

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.

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

113097-01H 7

Figure 3 - Ventilation Air from Outdoors

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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 pri­mary 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: Never install the

heater

• in a bedroom or bathroom

unless installed as a vented

appliance (Variable Manually­Controlled Models Only) (see
page 11)

• in a recreational vehicle

• where curtains, furniture,

clothing 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

WARNING: A qualied ser­vice person must install heater.
Follow all local codes.

NOTICE: State or local codes may

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

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

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

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

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 5.

CHECK GAS TYpE

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

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

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113097-01H8

INSTALLATION

Continued

INSTALLATION AND CLEARANCES

(Vent-Free Operation Only)

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 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, UL127­listed manufactured replace or certied vent-free
rebox.

Minimum Clearances For Side

Combustible Material, Side Wall and
Ceiling

A. Clearances from the side of the 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 opening (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 replace open-

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

Example

*

*Minimum 16" from Side Wall

Figure 4 - Minimum Clearance for

Combustible to Wall

NOTICE: Manual control heaters

may be used as a vented product.

If so, you must always run heater

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

Clamp Accessory for Vented
Operation, page 11.

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 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, page 10 for
minimum clearances.

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 11.

113097-01H 9

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INSTALLATION

Heat Resistant
Material

(A)

Minimum
Noncombustible
Material

Minimum
Noncombustible
Material Height

Distances to
Underside of
Mantel

Top of Fireplace
Opening

Underside
of Mantel
Shelf

Mantel Shelf

12"

8"

(A)

18"8"20"

14"

22"

17"

24"

20"

All minimum
distances
are in inches

Log Set

24"/30"
Models

18" Model

2

1

/2

"

6"

8"

10"

Continued

If Using Mantel

You must have noncombustible material(s) above
the replace opening. Noncombustible materials
(such as slate, marble, tile, etc.) must be at least
1/2" thick. With sheet metal, you must have non­combustible material behind it. Noncombustible
material must extend at least 8" up (for all models).
If noncombustible material is less than 12", you
must install the replace hood accessory (24" and
30" models only). Even if noncombustible material
is more than 12", you may need the hood acces­sory to deect heat away from your mantel shelf.
See Figure 5 and 6 and Figure 7 on page 11 for
minimum clearances.

Noncombustible Requirements for

Material Safe Installation

Distance (A)

12" or more Noncombust ble material
okay.

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

and 12" Install replace 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 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 in Figure 6 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).

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

Follow all minimum clearances

shown in this manual.

Figure 5 - Heat Resistant Material (Slate,

Marble, Tile, etc.) Above Fireplace

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 11.

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Figure 6 - Minimum Mantel Clearances

Without Using Hood

113097-01H10

Minimum
Noncombustible
Material

8"
Min.

12" 15" 18"

All minimum
distances are
in inches

Log Set

20"

2

1

/2

"

6"

8"

10"

12"

Distances to
Underside of
Mantel

Hood

Top of
Fireplace
Opening

Underside
of Mantel
Shelf

Mantel Shelf

14"
Min.

Combustible
Material

Noncombustible
Material

Hearth

5"
Min.

Combustible
Material

INSTALLATION

Continued

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

All
Models

(GA6050,
GA6052 and
GA6053)

Figure 7 - Minimum Mantel Clearances

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

113097-01H

When Using Hood

if Installed at Floor Level

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Figure 9 - Minimum Fireplace Clearances

Above Combustible Flooring

INSTALLING DAMpER CLAMp
ACCESSORY FOR VENTED
OpERATION

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

For Massachusetts Residents Only: Instal-

lation of this gas log set as a vented appliance in
the Commonwealth of Massachusetts requires the
damper be permanently removed or welded in the
fully open position.

If your heater is a manually-controlled model, you
may use this heater as a vented product. There
are three reasons for operating your heater in the
vented mode.

1. The replace does not meet the clearance to com­bustibles requirements for 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 38). This will insure vented
operation (see Figure 10). The damper clamp will
keep damper open. Installation instructions are
included with clamp accessory.

Damper
Clamp

Damper

Masonry

Fireplace

Figure 10 - Attaching Damper Clamp

Damper

Damper
Clamp

Damper

Manufactured

Fireplace

11

INSTALLATION

Continued

See chart below for minimum permanent ue
opening you must provide. Attach damper clamp
so the minimum permanent ue opening will be
maintained at all times.

Chimney Minimum permanent

Height Flue Opening

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

Area of Various Standard

Round Flues

Diameter Area

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

INSTALLING HEATER BASE
ASSEMBLY

CAUTION: Do not remove the

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

WARNING: You must secure

this heater to replace oor. If

not, heater will move when you

adjust controls. Moving heater
may cause a gas leak.

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

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

IMPORTANT: Make sure 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 28.

Installation Items Needed

• hardware package (provided with heater)

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

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

• electric drill with 3/16" drill bit

• athead screwdriver

1. Apply pipe joint sealant lightly to male threads

of the tting to be threaded into gas regulator.
Connect approved exible gas hose to gas
regulator of heater (see Figure 11).

IMPORTANT: Hold gas regula to r with

wrench when connecting exible gas hose.

2. Locate masonry screws in hardware package.

3. Position heater base assembly in replace.

4. Place logs in their proper position on heater base,

see Installing Logs on page 16.

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

side-to-side in replace.

6. Carefully remove logs without moving heater

base.

Flex ble Gas Hose
(if allowed by local codes)

Heater Gas
Regulator

Fitting

Figure 11 - Attaching Flexible Gas Hose

to Heater Gas Regulator

2

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113097-01H1