Desa CGCFTN Quick start guide

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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.
VENT-FREE COMPACT FIREPLACE
OWNER’S OPERATION AND INSTALLATION MANUAL
HDCFTP, HDCFTN, CGCFTP AND CGCFTN
14,000 to 26,000 Btu/Hr with Thermostat
Shown with Optional
Cabinet Mantel/Hearth
Base Accessory

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2
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 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 6 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 Information ............................................. 4
Product Features ................................................. 5
Unpacking ........................................................... 5
Assembly ............................................................. 5
Air For Combustion and Ventilation ..................... 6
Installation ........................................................... 8
Operating Fireplace ........................................... 19
Inspecting Burner .............................................. 21
Cleaning and Maintenance ................................ 22
Troubleshooting ................................................. 23
Specifications .................................................... 27
Replacement Parts ............................................ 27
Service Hints ..................................................... 27
Technical Service .............................................. 27
Illustrated Parts Breakdown and Parts List ....... 28
Accessories ....................................................... 30
Parts Centrals .................................................... 31
Warranty Information ............................Back Page

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111044-01E 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, op-
erate, or service this fireplace.
Improper use of this fireplace
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 fireplace 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 warnings.
Keep this manual for reference. It is your guide to
safe and proper operation of this fireplace.
WARNING: Any change to
this fireplace 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 fireplace .
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.
Fireplace front and screen be-
comes very hot when running
fireplace. Keep children and
adults away from hot surfaces to
avoid burns or clothing ignition.
Fireplace will remain hot for a
time after shutdown. Allow sur-
faces to cool before touching.
Carefully supervise young chil-
dren when they are in the room
with fireplace.
You must operate this fire-
place with the fireplace screen
in place. Make sure fireplace
screen is closed before running
fireplace.
Keep the appliance area clear
and free from combustible ma-
terials, gasoline, and other flam-
mable vapors and liquids.

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4
SAFETY INFORMATION
Continued
1. This appliance is only for use with the type of
gas indicated on the rating plate. This appliance
is not convertible for use with other gases.
2. Do not place propane/LP supply tank(s) inside
any structure. Locate propane/LP supply tank(s)
outdoors (propane/LP units only).
3. 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
4. This fireplace shall not be installed in a bed-
room or bathroom.
5. Do not use this fireplace as a wood-burning
fireplace. Use only the logs provided with the
fireplace.
6. Do not add extra logs or ornaments such as
pine cones, vermiculite, or rock wool. Using
these added items can cause sooting. Do not
add lava rock around base. Rock and debris
could fall into the control area of fireplace.
7. This fireplace is designed to be smokeless. If
logs ever appear to smoke, turn off fireplace
and call a qualified service person. Note:
During initial operation, slight smoking could
occur due to log curing and fireplace burning
manufacturing residues.
8. To prevent the creation of soot, follow the
instructions in Cleaning and Maintenance,
page 22.
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 or furniture.
10. This fireplace needs fresh air ventilation to run
properly. This fireplace has an Oxygen Deple-
tion Sensing (ODS) safety shutoff system. The
ODS shuts down the fireplace if not enough
fresh air is available. See Air for Combustion
and Ventilation, page 6. If fireplace keeps
shutting off, see Troubleshooting, page 23.
11. Do not run fireplace
• where flammable liquids or vapors are used
or stored.
• under dusty conditions.
12. Do not use this fireplace to cook food or
burn paper or other objects.
13. Never place any objects in the fireplace or on
logs.
14. Do not use fireplace if any part has been under
water. Immediately call a qualified service
technician to inspect the room fireplace and
to replace any part of the control system and
any gas control which has been under water.
15. Turn off and unplug fireplace and let cool be-
fore servicing. Only a qualified service person
should service and repair fireplace.
16. Operating fireplace above elevations of 4,500
feet could cause pilot outage.
17. Do not operate fireplace if any log is broken.
Do not operate fireplace if a log is chipped
(dime-sized or larger).
18. To prevent performance problems, do not use
propane/LP fuel tank of less than 100 lbs.
capacity (propane/LP units only).
19. Provide adequate clearances around air
openings.
LOCAL CODES
Install and use fireplace with care. Follow all local
codes. In the absence of local codes, use the latest
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
PRODUCT INFORMATION
Figure 1 - Vent-Free Gas Compact
Fireplace
Ignitor
Button
Screen
Fireplace
Cabinet
Log Set
Control
Knob

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111044-01E 5
PRODUCT FEATURES
SAFETY PILOT
This fireplace has a pilot with an Oxygen Deple-
tion Sensing (ODS) safety shutoff system. The
ODS/pilot is a required feature for vent-free room
fireplaces. The ODS/pilot shuts off the fireplace if
there is not enough fresh air.
PIEZO IGNITION SYSTEM
This fireplace has a piezo ignitor. This system
requires no matches, batteries, or other sources
to light fireplace.
THERMOSTATIC HEAT CONTROL
This fireplace has a thermostat sensing bulb and a
control valve. The thermostat will automatically
modulate the heat output to maintain a consistent
room temperature. This results in greater fireplace
comfort. This can also result in lower gas bills.
UNPACKING
1. Remove log box and fireplace from carton.
IMPORTANT: The fireplace hood is inside
the cardboard protective end wrap on the left
side of fireplace (as viewed from front). A
decal is on the outside of the cardboard end
wrap stating hood is enclosed (see Figure 2).
2. Remove hood from cardboard protective end
wrap as shown in Figure 2.
3. Remove all protective packaging applied to
fireplace for shipment.
4. Make sure your fireplace includes one hard-
ware packet.
5. Check fireplace for any shipping damage. If
fireplace is damaged, promptly inform dealer
where you bought fireplace.
Figure 2 - Removing Fireplace Hood
IMPORTANT:
THIS PACKAGE CONTAINS A
FIREPLACE HOOD. UNWRAP
CARTON AND REMOVE HOOD
BEFORE DISCARDING
PROTECTIVE PACKAGING.
1
2
Hood
Cardboard
Protective
Fireplace
End Wrap
Hood
Enclosed
Decal
ASSEMBLY
WARNING: Always have
branch support and screen in
place before operating fireplace.
This prevents excessive temper-
atures on fireplace surfaces.
WARNING: Failure to position
the parts in accordance with these
diagrams or failure to use only
parts specifically approved with
this fireplace may result in prop-
erty damage or personal injury.
ASSEMBLING FIREPLACE
Tools Required:
• Phillips screwdriver • slotted screwdriver
• 5/16" hex wrench • scissors
Installing Log
1. Lift screen up and pull out to remove.
2. Cut two plastic straps to remove the log from
the firebox cavity.
3.
An optional blower is available for models
CGCFTP and CGCFTN. See Accessories, page
30. Install optional blower now. Follow instal-
lation instructions provided with blower.
4. Remove log packaging material and discard
packaging. Gently place log set on burner
support (see Figure 3). The log should fit flat
against top of burner support and log locator
tabs fit into the slots under the log. Do not
allow log to contact flame. If flame contacts
log, soot will be created.
5. Reattach screen by placing the notches in the
screen frame over the shoulder screws and
pushing down.
Figure 3 - Assembling Fireplace
Log
Screen
Burner Support
with Log
Locator Tabs
Branch
Support
Shoulder
Screw

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ASSEMBLY
Continued
Assembling Hood
1. Locate four black phillips sheet metal screws
from the hardware packet.
2. Rotate hood as shown in Figure 4. Make sure
hood tabs point toward fireplace.
3. Insert hood tabs between baffle and louvers
(see Figure 4).
4. Gently rotate hood to upright position. Make
sure hood tabs are behind louvers and hood
is resting on firebox top (see Figure 4).
5. Align screw holes on hood with screw holes
on firebox top.
6. Insert screws as shown in Figure 4. Tighten
screws firmly.
Figure 4 - Assembling Hood
Hood Tab
Sheet
Metal
Screws
Louver
Baffle
Firebox
Top
Hood
Hood
Tabs
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.
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 6 through 8 will help
you classify your space and provide adequate
ventilation.
Unusually Tight Construction
The air that leaks around doors and windows
may provide enough fresh air for combustion and
ventilation. However, in buildings of unusually
tight construction, you must provide additional
fresh air.

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111044-01E 7
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 (6 x 10-11 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 8.
If your home does not meet all of the three
criteria above, proceed to Determining
Fresh-Air Flow For Fireplace Location.
Confined and Unconfined Space
The National Fuel Gas Code, ANSI Z223.1/NFPA
54 defines a confined space as a space whose vol-
ume 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 communicating 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 heater plus any adjoining rooms with door-
less passageways or ventilation grills between
the rooms.
AIR FOR COMBUSTION
AND VENTILATION
Continued
1. Determine the volume of the space (length x
width x height).
Length x Width x Height =__________cu. ft.
(volume of space)
Example: Space size 20 ft. (length) x 16 ft.
(width) x 8 ft. (ceiling height) = 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 heater ___________ 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.
Example:
Gas water heater __________ Btu/Hr
Vent-free heater + ________ 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)
56,000 Btu/Hr (actual amount of
Btu/Hr used)
The space in the above example is a confined space
because the actual Btu/Hr used is more than the maxi-
mum 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 unconfined
space, remove door to adjoining room or add
ventilation grills between rooms. See Ventilation
Air From Inside Building, page 8.
B. Vent room directly to the outdoors. See Ventila-
tion Air From Outdoors, page 8.
C. Install a lower Btu/Hr fireplace, if lower Btu/Hr
size makes room unconfined.
30,000
26,000
56,000

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8
AIR FOR COMBUSTION
AND VENTILATION
Continued
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
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 5). You
can also remove door into adjoining room (see
option 3, Figure 5). 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 5 - Ventilation Air from Inside
Building Shown with Optional Mantel
Or
Remove
Door into
Adjoining
Room,
Option 3
Ventilation Grills
Into Adjoining Room,
Option 2
12"
12"
Ventilation
Grills
into Adjoining
Room,
Option 1
Figure 6 - Ventilation Air from Outdoors
Shown with Optional Mantel
Outlet
Air
Ventilated
Attic
Outlet
Air
Inlet
Air
Inlet Air Ventilated
Crawl Space
To
Crawl
Space
To Attic
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.
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 heater. This will help
circulate the heat throughout the
house. In the event of a power
outage, you can use this heater
as your primary heat source.
WARNING: A qualified ser-
vice person must install fire-
place. Follow all local codes.

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111044-01E 9
Note: Your Comfort Glow fireplace is designed to be
used in zero clearance installations. Wall or framing
material can be placed directly against any exterior
surface of your fireplace, except where standoff
spacers are integrally attached. If standoff spacers
are attached to your fireplace, these spacers can be
placed directly against wall or framing materials.
Use the dimensions shown for rough openings to
create the easiest installation (see Built-In Fire-
place Installation, page 10).
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 fireplace. Call dealer where you bought
fireplace for proper type fireplace.
WARNING: This appliance
is equipped for (natural or pro-
pane/LP) gas. Field conversion
is not permitted.
INSTALLATION ITEMS
Before installing fireplace, make sure you have the
items listed below.
• external regulator - propane/LP only (supplied
by installer)
• piping (check local codes)
• sealant (resistant to propane/LP gas)
• equipment shutoff valve *
• test gauge connection *
• ground joint union
• sediment trap
• tee joint
• pipe wrench
* A CSA design-certified equipment shutoff valve
with 1/8" NPT tap is an acceptable alternative to
test gauge connection. Purchase the optional CSA
design-certified equipment shutoff valve from your
dealer. See Accessories, page 30.
Note: If desired, purchase a four-sided brass trim kit
for built-in installations. See Accessories, page 30.
LOCATING FIREPLACE
WARNING: Maintain the
minimum clearances shown
in Figures 7 and 8. If you can,
provide greater clearances from
floor, ceiling, and joining wall.
INSTALLATION
Continued
Figure 8 - Mounting Clearances As
Viewed From Front of Fireplace Shown
with Optional Mantel
Figure 7 - Mounting Clearances As
Viewed From Front of Fireplace Shown
Built In The Wall
6"
Minimum
From
Sides Of
Fireplace
Left
Side
CEILING
36" Minimum
FLOOR
Right
Side
Top Of
Mantel Can
Be Flush
With Wall
Left
Side
CEILING
Right
Side
36"
Minimum
You can recess firebox into the wall. You can
also position fireplace in the optional cabinet or
corner mantels. IMPORTANT: Only use optional
cabinet or corner mantels specified in this manual.
Purchase the optional mantel from your dealer (see
Accessories, page 30).
WARNING: Never install the
fireplace
• in a bedroom or a bathroom
• in a recreational vehicle
• where curtains, furniture, clothing,
or other flammable objects are
less than 36 inches from the front,
top, or sides of the fireplace
• as a fireplace insert
• in high traffic areas
• in windy or drafty areas

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10
CAUTION: This fireplace cre-
ates warm air currents. These
currents move heat to wall sur-
faces next to fireplace. Installing
fireplace next to vinyl or cloth
wall coverings or operating
fireplace where impurities (such
as, but not limited to, tobacco
smoke, aromatic candles, clean-
ing fluids, oil or kerosene lamps,
etc.) in the air exist, may discolor
walls or cause odors.
IMPORTANT: Vent-free fireplaces add moisture
to the air. Although this is beneficial, installing fire-
place in rooms without enough ventilation air may
cause mildew to form from too much moisture. See
Air for Combustion and Ventilation, page 6.
Note: When installing fireplace directly on carpet-
ing, tile or other combustible material, other than
wood flooring, the fireplace shall be installed on a
metal or wood panel extending the full width and
depth of the fireplace.
CAUTION: If you install the
fireplace in a home garage
• fireplace pilot and burner must
be at least 18 inches above
floor.
• locate fireplace where moving
vehicle will not hit it.
For convenience and efficiency, install fireplace
• where there is easy access for operation, inspec-
tion, and service.
• in coldest part of room
An optional blower kit is available from your
dealer. See Accessories, page 30. If planning to use
blower, locate fireplace near an electrical outlet.
BUILT-IN FIREPLACE INSTALLATION
Built-in installation of this fireplace involves
installing fireplace into a framed-in enclosure.
This makes the front of fireplace flush with wall.
An optional brass trim kit accessory is available
(see Accessories, page 30). Brass trim will extend
past sides of fireplace approximately 1/2 inch. This
will cover the rough edges of the wall opening. If
installing a built-in mantel above the fireplace, you
must follow the clearances shown in Figure 12,
page 12. Follow the instructions below to install
the fireplace in this manner. Note: Your Comfort
Glow fireplace is designed to be used in zero clear-
ance installations. Wall or framing material can be
placed directly against any exterior surface on the
rear, sides, or top of your fireplace.
Actual Framing
Height 26" 26 7/8"
Front Width 26 3/4" 26 7/8"
Depth 9 1/2" 10 1/2"
Bottom 3/4" 3/4"
1. Frame in rough opening. Use dimensions
shown in Figure 9 for the rough opening.
If installing in a corner, use dimensions shown
in Figure 10 for the rough opening. The height
is 26 7/8" which is the same as the wall opening
above.
365 /8 "
257
/8
"
513 /4 "
267
/8
"
267/8"
267/8"
3/4" Off
The Floor
Minimum
10 1/2"
Figure 9 - Rough Opening for Installing
in Wall
Figure 10 - Rough Opening for Installing
in Corner
INSTALLATION
Continued

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111044-01E 11
INSTALLATION
Continued
2. If installing GA3450T blower accessory, do
so at this time. Follow instructions included
with blower accessory. Note: If not installing
blower accessory, you may wish to run electri-
cal wiring to your fireplace for future blower
installation (see Accessories, page 30). Use
only approved three-wire electrical wiring.
Note: A qualified installer should make all
electrical connections.
WARNING: If pre-wiring, do
not connect wiring to any electri-
cal source at this time.
Install fireplace electrical outlet
and connect wiring to outlet
before connecting to electrical
source. The fireplace electri-
cal outlet is included with the
GA3450T blower accessory.
Only use the fireplace electrical
outlet supplied with the GA3450T
blower accessory.
3. Install gas piping to fireplace location. This
installation includes an approved flexible gas
line (if allowed by local codes) after the equip-
ment shutoff valve. The flexible gas line must
be the last item installed on the gas piping.
4. If you have not assembled firebox, follow
instructions on page 5.
5. Carefully set fireplace in front of rough opening
with back of fireplace inside wall opening.
6. Attach flexible gas line to fireplace gas regula-
tor. See Connecting to Gas Supply, page 16.
7. Bend four nailing flanges on outer casing with
pliers (see Figure 11).
8. Attach fireplace to wall studs using nails or
wood screws through holes in nailing flange.
9. Check all gas connections for leaks. See
Checking Gas Connections, page 18.
10. If using optional brass trim kit, install the trim
after final finishing and/or painting of wall.
See instructions included with brass trim ac-
cessory for attaching brass trim.
Figure 11 - Attaching Fireplace to Wall
Studs
Nails or Wood
Screws
Nailing
Flanges
IMPORTANT: When finishing your firebox,
combustible materials such as wall board, gypsum
board, sheet rock, drywall, plywood, etc. may be
butted up next to the sides and top of the firebox.
Combustible materials should never overlap the
firebox front facing.
WARNING: Do not allow any
combustible materials to overlap
the firebox front facing.
IMPORTANT: Noncombustible materials such
as brick, tile, etc. may overlap the front facing,
but should never cover any necessary openings
like louvered slots.
WARNING: Do not allow
noncombustible materials to
cover any necessary openings
like louvered slots.
WARNING: Never modify or
cover the louvered slots on the
front of the firebox.
WARNING: Use only non-
combustible mortar or adhe-
sives when overlapping the front
facing with noncombustible
facing material.

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12
MANTEL CLEARANCES FOR BUILT-
IN INSTALLATION
If placing mantel above built-in fireplace, you must
meet minimum clearance between mantel shelf and
top of fireplace opening.
NOTICE: Surface temperatures
of adjacent walls and mantels
become hot during operation.
Walls and mantels above the
firebox 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 clear-
ances shown, you must do one
of the following:
• raise the mantel to an accept-
able height
• remove the mantel
INSTALLATION
Continued
13"
16"
19"
21"
2 1/2"
6"
8"
10"
Note:
All vertical
measurements
are from top of
fireplace
opening to
bottom of
mantel shelf. All
measurements
are in inches.
Figure 12 - Minimum Mantel Clearances
for Built-In Installation
Mantel Shelf
Note: All vertical
measurements are
from top of fireplace
opening to bottom
of mantel shelf. All
measurements are
in inches.
Side of
Firebox
OPTIONAL MANTEL INSTALLATION
Note: Refer to instructions provided with the man-
tel for assembly instructions. Refer to instructions
below for system installation. Refer to instructions
on page 4 for firebox assembly. Blower accessory
should be installed if it is being used (see Installing
Blower Accessory GA3450T, page 13).
1. Unscrew four brass screws that attach top lou-
ver to fireplace. Remove louver from fireplace
and set aside.
2. Place fireplace on wood base.
3. Place mantel around fireplace/base assembly.
4. Assemble brass trim kit. See Assembling Brass
Trim, page 13.
5. Firmly snap brass trim kit on shoulder screws.
Shoulder screws are located on fireplace cabi-
net (see Figure 13).
6.
Align brass trim kit for flush fit around opening.
7.
Use two 3" wood screws provided and attach
fireplace base to wooden base (see Figure 13).
8. Remove brass trim kit and mantel. Be careful
not to damage wall or mantel.
9. Place wood base next to wall at installation
location.
10. Attach wood base to floor with two 1 3/4"
black screws provided (see Figure 14, page
13). If the floor is concrete use anchor method
(see Attaching Wood Base to Solid Floor, page
14, page 13).
11. Install gas line. See Connecting To Gas Sup-
ply, page 16.
12. Check for leaks. See Checking Gas Connec-
tions, page 18.
Shoulder
Screws
Assembled
Brass Trim
Hole for 3"
Wood Screw
for Attaching
Fireplace to
Wooden Base
Hole for 3" Wood Screw for
Attaching Fireplace to Mantel
Figure 13 - Attaching Brass Trim to
Fireplace

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111044-01E 13
INSTALLATION
Continued
Figure 14 - Attaching Wood Base to
Floor
1 3/4" Screw
Wood Base
13. Place mantel around fireplace. Be careful not
to damage wall or mantel.
14. Place brass trim kit on the shoulder screws
located on the side and top of the fireplace.
Firmly snap the brass trim over the shoulder
screws on fireplace (see Figure 13, page 12).
15. Adjust assembly to remove any gaps. Attach
remaining two 3" wood screws from hardware
pack through openings inside of fireplace sides
into the mantel. The openings are located at top
behind the area for the louvers (see Figure 13,
page 12).
16. Reinstall top louvers.
ASSEMBLING BRASS TRIM
(Brass trim shipped with mantel)
1. Remove packaging from three remaining
pieces of brass trim.
2. Locate two adjusting plates with set screws,
and two shims in the hardware packet.
3. Align shim under adjusting plate as shown in
Figure 15.
4. Slide one end of adjusting plate/shim in
slot on mitered edge of top brass trim (see
Figure 15).
5. Slide other end of adjusting plate/shim in
slot on mitered edge of side brass trim (see
Figure 15).
6. While firmly holding edges of brass trim to-
gether, tighten both set screws on the adjusting
plate with slotted screwdriver.
7. Repeat steps 1 through 6 for other corner.
8.
Set brass assembly aside for later installation.
INSTALLING BLOWER ACCESSORY
GA3450T
Removing Upper Louver Assembly
To install the blower accessory, you must first
remove the upper louver assembly.
1. Lift screen off heater.
2. Remove 4 screws from louver assembly (see
Figure 16). Save these screws.
3. Pull louver assembly straight out from the
cabinet. Be careful not to scratch the paint.
Set louver assembly and screws aside.
Side
Brass
Trim
Top Brass
Trim
Mitered
Edge
Shim
Set Screws
Adjusting
Plate
Slot
Slot
Figure 15 - Assembling Brass Trim
Figure 16 - Removing Upper Louver
Assembly
Upper
Louver
Assembly
Screws
Blower Bracket
Mounting Holes

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14
INSTALLATION
Continued
Removing Valve Cover Shield
1. Open bottom louver assembly by swinging
the assembly down (see Figure 17).
2. Using short Phillips screwdriver, remove the
screw under the center of the branch support.
Rotate valve cover shield clockwise and slide
out. IMPORTANT: Do not remove shoulder
screw on the left side of valve cover shield.
Slide the valve cover shield off of the shoulder
screw (see Figure 17).
Note: If you do not have a short Phillips
screwdriver, the screen, log set, and branch
support must be removed so a longer screw-
driver may be used. See Connecting Equip-
ment Shutoff Valve to Heater Control, page
17, steps 1 and 2.
1
2
Remove
Screw
Valve
Cover
Shield
Shoulder
Screw
Figure 17 - Removing Valve Cover Shield
Branch Support
Snap Bushings Bottom Louver Assembly
Installing Blower Assembly
(Models CGCFTP and CGCFTN)
CAUTION: Label all wires
prior to disconnection when
servicing controls. Wiring errors
can cause improper and danger-
ous operation.
CAUTION: Verify proper op-
eration after servicing.
Note: If you are using a mantel with your heater,
use the following instructions. If your heater is
built-in, see For Built-In Installation on page 15.
1. Install snap bushings found in hardware kit
into both holes in rear of valve cover shield.
2.
Make sure the wire harness is firmly connected to
the terminals on the blower bracket assembly.
3. Note the wire locations on back of AUTO/
OFF/ON switch. The terminals on back of
switch are numbered 1, 2, and 3. Carefully
remove red wire from terminal 1 and blue
wire from terminal 3. Black wire can remain
on middle terminal 2 (see Figure 18).
4. Carefully disconnect green and white wires at
their insulated connectors.
5. In top of the heater cabinet, locate the four
mounting holes on the outer casing. Align
these four holes with those on the blower
bracket assembly. Attach blower bracket as-
sembly to the outer casing with 4 #10 screws
provided (see Figure 18).
6. Route the wire harness through the hole in
left side of baffle. Pull wire harness through
lower opening above where the valve shield
was removed. (see Figure 18).
7. Insert the 4 wire harness into one of the round
holes in the rear of the valve cover shield and
through the rectangular hole in the front of
shield (see Figure 18).
8. Reconnect red wire to switch position 3.
Reconnect blue wire to switch position 1.
Reconnect green and white wires.
3
2
1
Figure 18 - Installing Blower Bracket
Assembly
Wire
Harness
Blower Bracket
Assembly
Screw
Power
Cord
Valve Cover
Shield
Box
Cover
Wire
Harness
Switch
Plate
Switch
Baffle
Wiring Routing
Hole in Baffle
Blue
Red

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111044-01E 15
9. Install the switch plate on the valve cover
shield with 2 #10 screws provided (see Figure
19). Reinstall the valve cover shield. Route
power cord out of the cabinet by inserting it
through the bushing on the outer casing (see
Figure 18, page 14). Plug fan kit into 120-Volt
grounded power supply and test operation.
Note: When switch is in the AUTO position,
the fan will start after the heater has run for
a few moments. The fan will continue to run
for several moments after the heater has been
turned off. When switch is in the ON position,
the fan will run until turned to OFF. Reinstall
upper louver assembly and hood if previously
removed, (see Figure 16, page 13). Close
lower louver door.
INSTALLATION
Continued
Figure 19 - Installing Switch Plate to
Valve Cover Shield
Switch
Plate Screw
Valve Cover
Shield
For Built-In Installation
WARNING: A licensed elec-
trician must connect the wiring
harness to electrical supply
following all local codes. Electri-
cian must provide a clamp on the
box cover to secure the wiring.
Wiring should be routed through
the bushing in the hole on the
outer casing of heater.
Follow instructions in Removing Valve Cover
Shield, page 14, then
1. Install a snap bushing found in hardware kit
into one of the holes found on rear of valve
cover shield. The other hole is for a strain
relief clamp (not supplied) to secure incoming
electrical supply.
2. Follow steps 2 through 6 in Installing Blower
Assembly, page 14. Also remove black wire
from middle switch terminal 2.
3. Remove black plastic strain relief and power
cord from switch plate. The power cord supplied
will not be used in built-in installations. Pop in
the plastic snap bushing found in hardware kit
into the hole left by supply cord/strain relief.
4. A licensed electrician must follow the wiring
diagram to connect incoming electrical supply
to fan kit wiring harness (see Figure 20).
5. Plug power cord to the outlet receptacle (not
provided) as shown in Figure 21. Wind the
extra cable in power cord and and tie it up with
the plastic wire strap (see Figure 21). Set the
cable bundle between the burner bracket and
outer casing, away from the burner.
6. Reinstall valve cover shield.
7. Test to make sure the blower is working
properly.
8. Reinstall upper louver assembly and hood if
previously removed, (see Figure 16, page 13).
Close lower louver door.
Figure 20 - Wiring Diagram For Blower
Accessory Built-In Installation
Red
Red
Fan Switch
(Auto/Off/On)
Blue
Blue
Thermostat
Switch
(N.O.)
Green
White
Green
White
On
110/115
V.A.C. Blower
Motor
Black
Off
1
2
3
Auto
3
2
1
Blower Bracket
Assembly
Screw
Wire
Harness
Power
Cord
Valve Cover
Shield
Box
Cover
Wire
Harness
Switch
Plate
Switch
Clamp
Connector
(not included)
Outlet
Receptacle
Blue Red
Plastic Wire
Strap
Figure 21 - Installing Blower Bracket
Assembly

www.desatech.com 111044-01E
16
Extension Cord
Use extension cord if needed. The cord must have
a three-prong, grounding plug and a three-hole
receptacle. Make sure cord is in good shape. It must
be heavy enough to carry the current needed. An un-
dersized cord will cause a drop in line voltage. This
will result in loss of power and overheating. Use a
No. 16 AWG cord for lengths less than 50 feet.
ATTACHING WOOD BASE TO SOLID
FLOOR
For attaching base to solid floors (concrete or
masonry)
Note: Floor anchors and mounting screws are
in hardware package. The hardware package is
provided with fireplace.
1. Drill holes at marked locations using 5/16"
drill bit. For solid floors (concrete or ma-
sonry), drill at least 1" deep.
2. Fold floor anchor as shown in Figure 22.
3. Insert floor anchor (wings first) into hole. Tap
anchor flush to floor.
4. Insert mounting screws through base and into
floor anchors.
5. Tighten screws until base is firmly fastened to
floor.
INSTALLATION
Continued
Figure 22 - Folding Anchor
CONNECTING TO GAS SUPPLY
WARNING: This appliance
requires a 45° male flare fitting
5/8"-18 UNF (Unified National
Fine Thread) inlet connection and
the flexible gas line provided.
WARNING: A qualified service
person must connect fireplace
to gas supply. Follow all local
codes.
CAUTION: Never connect
propane/LP fireplace directly
to the propane/LP supply. This
fireplace requires an external
regulator (not supplied). Install
the external regulator between
the fireplace and propane/LP
supply.
WARNING: Never connect
natural gas fireplace to private
(non-utility) gas wells. This
gas is commonly known as
wellhead gas.
For propane/LP units, 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
inches of water. If you do not reduce incoming gas
pressure, fireplace regulator damage could occur.
Install external regulator with the vent pointing
down as shown in Figure 23. Pointing the vent
down protects it from freezing rain or sleet.
CAUTION: Use only new,
black iron or steel pipe. Inter-
nally-tinned copper tubing may
be used in certain areas. Check
your local codes. Use pipe of
1/2" or greater diameter to allow
proper gas volume to fireplace.
If pipe is too small, undue loss
of volume will occur.
Propane/LP
Supply Tank
Vent Pointing Down
External
Regulator
Figure 23 - External Regulator with Vent
Pointing Down

www.desatech.com
111044-01E 17
Installation must include an equipment shutoff
valve, union, and plugged 1/8" NPT tap. Locate NPT
tap within reach for test gauge hook up. NPT tap
must be upstream from fireplace (see Figure 24).
IMPORTANT: Install an equipment shutoff valve
in an accessible location. The equipment shutoff
valve is for turning on and shutting off the gas to
the appliance.
Check your building codes for any special re-
quirements for locating equipment shutoff valve
to fireplaces.
Apply pipe joint sealant lightly to male NPT
threads. This will prevent excess sealant from
going into pipe. Excess sealant in pipe could result
in clogged fireplace valves.
WARNING: Use pipe joint
sealant that is resistant to liq-
uid petroleum (LP) gas.
We recommend that you install a sediment trap in
supply line as shown in Figure 24. Locate sediment
trap where it is within reach for cleaning. Install in
piping system between fuel supply and fireplace.
Locate sediment trap where trapped matter is not
likely to freeze. A sediment trap traps moisture and
contaminants. This keeps them from going into fire-
place controls. If sediment trap is not installed or is
installed wrong, fireplace may not run properly.
INSTALLATION
Continued
* Purchase the optional CSA design-certified
equipment shutoff valve from your dealer. See
Accessories, page 30.
Figure 24 - Gas Connection
CSA Design-Certified
Equipment Shutoff Valve
With 1/8" NPT Tap*
PROPANE/LP
From External
Regulator (11"
W.C. to 14" W.C.
Pressure)
NATURAL
From Gas Meter
(5" W.C. to 10.5"
W.C. Pressure)
3" Minimum
Pipe Cap Tee
Nipple Joint
Sediment Trap
CONNECTING EQUIPMENT
SHUTOFF VALVE TO HEATER
CONTROL
Installation Items Needed
• Phillips screwdriver
• sealant (resistant to propane/LP gas, not
provided)
1. Remove fireplace screen. Remove two screws
that hold fireplace screen in place for shipping.
These screws are located near top of screen.
Discard screws. Lift fireplace screen up and
pull out to remove.
2. Remove screws that attach branch support
to fireplace (see Figure 25). Carefully lift up
branch support and remove from fireplace (see
Figure 25).
3. Route flexible gas line, included, from fire-
place control to equipment shutoff valve
through side or rear access holes in outer
casing.
NOTICE: Most building codes
do not permit concealed gas
connections. A flexible gas line
is provided to allow accessibility
from the fireplace (see Figure 25).
The flexible gas supply line con-
nection to the equipment shutoff
valve should be accessible.
CAUTION: Avoid damage to
regulator. Hold gas regulator
with wrench when connecting it
to gas piping and/or fittings.
Figure 25 - Removing Log Base
Assembly From Fireplace
Branch
Support
Screen
Screen
Shipping
Screw
Shoulder
Screw
Flexible
Gas Line

www.desatech.com 111044-01E
18
4. Apply pipe joint sealant lightly to male threads
of gas connector attached to flexible gas line/
equipment shutoff valve (see Figure 26).
5. Check all gas connections for leaks. See
Checking Gas Connections.
6. Replace branch support back into fireplace.
Feed flexible gas line into fireplace base area
while replacing branch support. Make sure
the entire flexible gas line is in fireplace base
area. Reattach branch support to fireplace with
screws removed in step 2 on page 17.
INSTALLATION
Continued
Figure 26 - Attaching Flexible Gas Line
to Equipment Shutoff Valve
Flexible Gas Line from
Fireplace Gas Regulator
Provided with Fireplace
To Fireplace
Gas Regulator
Equipment Shutoff
Valve Provided by
Installer
CHECKING GAS CONNECTIONS
WARNING: Test all gas piping
and connections, internal and
external to unit, for leaks after
installing or servicing. Correct
all leaks at once.
WARNING: Never use an
open flame to check for a leak.
Apply a noncorrosive leak detec-
tion fluid to all joints. Bubbles
forming show a leak. Correct all
leaks at once.
CAUTION: Make sure exter-
nal regulator has been installed
between propane/LP supply and
fireplace. See guidelines under
Connecting to Gas Supply,
page 16.
PRESSURE TESTING GAS SUPPLY
PIPING SYSTEM
Test Pressures In Excess Of 1/2 PSIG
(3.5 kPa)
1. Disconnect appliance with its appliance main
gas valve (control valve) and equipment
shutoff valve from gas supply piping system.
Pressures in excess of 1/2 psig will damage
heater regulator.
2. Cap off open end of gas pipe where equipment
shutoff valve was connected.
3. Pressurize supply piping system by either
opening propane/LP supply tank valve for
propane/LP gas or opening main gas valve
located on or near gas meter for natural gas,
or using compressed air.
4. Check all joints of gas supply piping system.
Apply a noncorrosive leak detection fluid to
gas joints. Bubbles forming show a leak.
5. Correct all leaks at once.
6. Reconnect heater and equipment shutoff valve
to gas supply. Check reconnected fittings for
leaks.
Test Pressures Equal To or Less Than
1/2 PSIG (3.5 kPa)
1. Close equipment shutoff valve (see Fig-
ure 27).
2. Pressurize supply piping system by either
opening propane/LP supply tank valve for
propane/LP gas or opening main gas valve
located on or near gas meter for natural gas,
or using compressed air.
3. Check all joints from gas meter for natural
or propane/LP supply to equipment shutoff
valve (see Figures 28 and 29, page 19). Ap-
ply a noncorrosive leak detection fluid to gas
joints. Bubbles forming show a leak.
4. Correct all leaks at once.
Figure 27 - Equipment Shutoff Valve
Open
Closed
Equipment
Shutoff
Valve
PROPANE/LP
To External
Regulator
NATURAL
To Gas Supply

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111044-01E 19
INSTALLATION
Continued
PRESSURE TESTING FIREPLACE GAS
CONNECTIONS
1. Open equipment shutoff valve (see Figure 27,
page 18).
2. Open main gas valve located on or near gas
meter for natural gas or open propane/LP
supply tank valve.
3. Make sure control knob of fireplace is in the
OFF position.
4. Check all joints from equipment shutoff valve
to thermostat gas valve (see Figures 28 and
29). Apply a noncorrosive leak detection fluid
to gas joints. Bubbles forming show a leak.
5. Correct all leaks at once.
6. Light fireplace (see Operating Fireplace).
Check all other internal joints for leaks.
7. Turn off fireplace (see To Turn Off Gas to
Appliance, page 20).
8. Replace front panel.
Figure 28 - Checking Gas Joints Shown
with Optional Mantel (Propane/LP Gas)
Equipment Shutoff Valve
Propane/LP
Supply
Tank
Figure 29 - Checking Gas Joints Shown
with Optional Mantel (Natural Gas)
Gas Meter
Equipment Shutoff Valve
OPERATING FIREPLACE
FOR YOUR SAFETY
READ BEFORE LIGHTING
WARNING: If you do not fol-
low these instructions exactly,
a fire or explosion may result
causing property damage, per-
sonal injury or loss of life.
A. This appliance has a pilot which must be
lighted by hand. When lighting the pilot,
follow these instructions exactly.
B. BEFORE LIGHTING smell all around the
appliance area for gas. Be sure to smell next
to the floor because some gas is heavier than
air and will settle on the floor.
WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electric switch; do not use
any phone in your building.
• Immediately call your gas supplier from
a neighborʼs phone. Follow the gas
supplierʼs instructions.
• If you cannot reach your gas supplier,
call the fire department.
C. Use only your hand to push in or turn the
gas control knob. Never use tools. If the
knob will not push in or turn by hand, donʼt
try to repair it, call a qualified service tech-
nician or gas supplier. Force or attempted
repair may result in a fire or explosion.
D. Do not use this appliance if any part has
been under water. Immediately call a
qualified service technician to inspect the
appliance and to replace any part of the
control system and any gas control which
has been under water.

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20
OPERATING FIREPLACE
Continued
LIGHTING
INSTRUCTIONS
WARNING: You must operate
this fireplace with the fireplace
screen in place. Make sure fire-
place screen is installed before
running fireplace.
NOTICE: During initial operation
of new fireplace, burning logs
will give off a paper-burning
smell. Orange flame will also be
present. Open window to vent
smell. Operate fireplace on HI
position to burn off odor. This
will only last a few hours.
1. STOP! Read the safety information on
page 19.
2. Make sure equipment shutoff valve is fully
open.
3. Turn control knob clockwise to the
OFF position.
4. Wait five (5) minutes to clear out any gas.
Then smell for gas, including near the floor.
If you smell gas, STOP! Follow “B” in the
safety information above. If you donʼt smell
gas, go to the next step.
5. Turn control knob counterclockwise
to the PILOT position. Press
in control knob for five (5) seconds (see
Figure 30).
Note: You may be running this fireplace for
the first time after hooking up to gas sup-
ply. If so, the control knob may need to be
pressed in for 30 seconds or more. This will
allow air to bleed from the gas system.
• If control knob does not pop up when
released, contact a qualified service person
or gas supplier for repairs.
6. With control knob pressed in, push down
and release ignitor button. This will light
pilot. The pilot is attached to the front of
burner. If needed, keep pressing ignitor
button until pilot lights.
Note: If pilot does not stay lit, refer to
Troubleshooting, page 23. Also contact a
qualified service person or gas supplier for
repairs. Until repairs are made, light pilot
with match. To light pilot with match, see
Manual Lighting Procedure, page 21.
7. Keep control knob pressed in for 30 seconds
after lighting pilot. After 30 seconds, release
control knob.
Note: If pilot goes out, repeat steps 3
through 7. This fireplace has a safety in-
terlock system. Wait one (1) minute before
lighting pilot again.
8. Turn control knob counterclockwise
to desired heating level. The main
burner should light. Set control knob to any
heat level between HI and LO.
CAUTION: Do not try to ad-
just heating levels by using the
equipment shutoff valve.
Ignitor
Button
Figure 30 - Control Knob In The OFF
Position
Control
Knob
Thermocouple
Pilot Burner
Figure 31 - Pilot
Ignitor
Electrode
TO TURN OFF GAS
TO APPLIANCE
Shutting Off Fireplace
1. Turn control knob clockwise to the
OFF position.
2. Turn off all electric power to the appliance
if service is to be performed.
Shutting Off Burner Only (pilot stays lit)
Turn control knob clockwise to the
PILOT position.