Desa Comfort Glow CGG3630P Quick start guide

UNVENTED (VENT-FREE)
PROPANE/LP GAS LOG HEATER
(Variably Controlled Models Also Designed Certified as Vented Decorative Appliance)
This appliance may be installed in an aftermarket* manufactured (mobile) home, where
not prohibited by state or local codes.
* Aftermarket: Completion of sale, not for purpose of resale, from the manufacturer
OWNER'S OPERATION AND INSTALLATION MANUAL
CGG2618P, CGG3324P(T), and CGG3630P
Thermostat and Variably-Controlled Models
WARNING: If the information in this
manual is not followed exactly, a fire or
explosion may result causing property
damage, personal injury, or loss of life.
mDo 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 build-
ing.
•Immediately call your gas supplier
from a neighbor's phone. Follow the
gas supplier's instructions.
•If you cannot reach your gas sup-
plier, call the fire department.
-- Installation and service must be per-
formed by a qualified installer, service
agency, or the gas supplier.
WARNING: Improper installation, adjust-
ment, alteration, service, or maintenance
can cause injury or property damage.
Refer to this manual for correct installa-
tion and operational procedures. For
assistance or additional information con-
sulta qualified installer, service agency,
or the gas supplier.
WARNING: This gas log set is for instal-
lation in a masonry solid fuel burning
fireplace, a U.L. listed manufactured
solid fuel burning fireplace or an AGA
design certified vent-free firebox listed
for use with these gas log models (in-
cluding CGFB32NC and CGFB32C).
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 ven
tilation air must be provided. Refer to
Air for Combustion and Ventilation sec-
tion in this manual.
Save this manual for future reference.

UNVENTED (VENT-FREE) GAS LOG HEATER
SAFETY
INFORMATION
WARNINGS
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 ordeath 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 headaches, dizziness, ornausea. 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.
Propane/LP Gas: Propane/LP gas is odor-
less. 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.
A
aIWARNING: Any change to this
heater or its controls can be dan-
gerous.
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.
3. If you smell gas
• shut off gas supply
•do not try to light any appliance
•do not touch any electrical switch; do
not use any phone in your
building
• immediately call your gas supplier
from a neighbor's phone. Follow the
gas supplier's instructions
• if you cannot reach your gas supplier,
call the fire department
4. This heater shall not be installed in a
bedroom or bathroom (except in vented
installation, see page 10).
5. Never install the heater
• 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 heater
• in nigh traffic areas
• in windy or drafty areas
6. Before installing in a solid fuel burning
fireplace, the chinmey flue and firebox
must be cleaned of soot, creosote, ashes
and loose paint by a qualified chimney
cleaner. Creosote will ignite if highly
heated. Inspect chimney flue for
damage. If damaged, operate heater
with flue damper closed.
7. If fireplace has glass doors, never
operate this heater with glass doors
closed. If you operate heater with doors
closed, heat buildup inside fireplace
will cause glass to burst. Also if
fireplace opening has vents at the
bottom, you must open the vents before
operating heater.
8. You must operate this heater with a
fireplace screen in place. Make sure
fireplace screen is closed before
running heater.
9. 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 manufacturing residues.
10. 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.
11. Do not use a blower insert, heat
exchanger insert or other accessory not
12. approved for use with this heater.
This heater needs fresh, outside air
ventilation to mn properly. This heater
has an oxygen depletion sensor (ODS)
pilot light safety system. The ODS
shuts down the heater if not enough
fresh air is available. See Air for
Combustion atul Ventilation, pages 4
through 6. If heater keeps shutting off,
see Troubleshooting, pages 19 through
21.
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
bum paper or other objects.
15. Never place any objects on the heater.
16. Heater base assembly becomes very hot
when running heater. Keep children and
adults away from hot surface to avoid
bums or clothing ignition. Heater will
remain hot for a time after shutdown.
Allow surface to cool before touching.
17. Carefully supervise young children
when they are in the room with heater.
18. 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.
19. Do not operate heater if any log is
broken. Do not operate heater if a log
is chipped (dime-sized or larger).
20. Turn heater off and let cool before
servicing. Only a qualified service
person should service and repair heater.
21. Operating heater above elevations of
4,500 feet could cause pilot outage.
22. To prevent performance problems, do
not use propane tank of less than
100 lbs. capacity.

"OWNER'S MANUAL
PRODUCT
IDENTIFICATION
Bottom Mid
Log (#2)
Front
Burner
Piezo
Ignitor
Front Log (#3)
Control Knob
Top Log (#4) Rear Log (#1)
Rear
Burner
'_ Base Assembly
PRODUCT
FEATURES
Operation
This heater is clean burning. It requires no
outside venting. There is no heat loss out a
vent or up a chimney. Heat is generated by
both realistic flames and glowing coals.
This heater is designed for vent-free opera-
tion with flue damperelosed. State and local
codes in some areas prohibit the use of vent-
free heaters. You can operate heater as a
vented product by opening flue damper.
Safety Pilot
This heater has a pilot with an Oxygen
Depletion Sensor Shutoff System (ODS).
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.
Figure 1-Vent-Ft_e Gas Log Heater
LOCAL CODES
Install and use heater with care. Follow all
local codes. In the absence of local codes,
use the latest edition of The National Fuel
Gas Code ANSI Z223, also known as 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.
UNPACKING
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.
t_ 3

UNVENTED (VENT-FREE) GAS LOG HEATER
SPECIFICATIONS
Model CGG3324PT CGG2618P CGG3324P CGG3630P
Btu (Variable) 20,000133,000 16,000/26,000 20,000/33,000 21,500/36,000
Type Gas Propane/LP Only Propane/LP Only Propane/LP Only Propane/LP Only
Ignition Piezo Piezo Piezo Piezo
Manifold Pressure 7.9" W.C. 7.9" W.C. 7.9" W.C. 7.9" W.C.
Inlet Gas Pressure (in. of water)
Maximum 14" 14" 14" 14"
Minimum* 11" 11" 11" 11"
* For purpose of input adjustment
Shipping Weight 38 lbs. 36 lbs. 38 lbs. 40 lbs.
AIR FOR
COMBUSTION AND
VENTILATION
_[_ WARNING: This heater shall
not be installed in a confined
space unless provisions are pro-
vided for adequate combustion
and ventilation air. Read the fol-
lowing instructions to insure
proper fresh air for this and other
fuel-burning appliances in your
home.
Today's homes are built more energy effi-
cient than ever. New materials, increased
insulation, and new construction methods
help reduce heat loss in homes. Home own-
ers 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 pos-
sible.
While itis good to make your home energy
efficient, your home needs to breathe.Fresh
air must enter your home. All fuel-burning
appliances need fresh air for proper com-
bustion and ventilation.
Exhaust fans, fu:eplaces, clothes dryers, and
fuel burning appliances draw air from the
house to operate. You must provide ad-
equate 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. NFPA 54/ANSI Z223.1,
Section 5.3, Air for Combustion and Venti-
lation.
All spaces inhomes fall into one of the three
following ventilation classifications: 1.Un-
usually Tight Contruction; 2. Unconfined
Space; 3. Confined Space.
The information on pages 4 through 6 will
help you classify your space and provide
adequate ventilation.
Unusually Tight Construction
The air that leaks around doors and win-
dows may provide enough fresh air for com-
bustion and ventilation. However, in build-
ings 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
outside atmosphere have a
continuous water vapor retarder
with a rating of one perm (6x10""
per pa-sec-m 2) or less with
openings gnsketed or sealed and
b.weather stripping has been added
on openable windows and doors
and
e. caulking or sealants are applied to
areas such as joints around
window and door frames, between
sole plates and floors, between
wall-ceillng joints, between wall
panels, at penetrations for
plumbing, electrical, and gas fines,
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 6.
If your home does not meet all of the three
criteria above, proceed to page 5.
Confined and Unconfined Space
The National Fuel Gas Code (ANSIZ223.1,
1992 Section 5.3) defines a confined space
as a space whose volume is less than 50
cubic feet per 1,000 Btu per hour (4.8 m3per
kw) of the aggregate input rating of all
appliances installed in that space and an
unconfining space as a space whose volume
is not less than 50 cubic feet per 1,000 Btu
per hour (4.8 m3per kw) of the aggregate
input rating of all appliances installed in that
space. Rooms communicating directly with
the space in which the appliances are in-
stalled*, 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 ventila-
tion grills between them.
_WARNING: Ifthearea inwhich
the heater may be operated is
smaller than that defined as an
unconfined space, provide ad-
equate combustion and ventila-
tion air by one of the methods
described in the National Fuel
Gas Code, ANSI Z223.1, 1992,
Section 5.3.
41o3425

OWNER'S MANUAL
AIR FOR
COMBUSTION AND
VENTILATION
Continued
DETERMINING AIR FLOW FOR HEATER LOCATION
Determining if You Have a Confined or Unconfined Space
Use this worksheet to determine if you have a confined or unconfined space.
Space: Includes the room in which you wilt install heater 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 20ft. (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. Divide the space volume by 50 cubic feet to determine the maximum Btu/Hr the space can support.
(volume of space) + 50 cu. ft. =(Maximum Btu/Hr the space can support)
Example: 2560 cu. ft. (volume of space) + 50 cu. ft. = 51.2 or 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
Example: Gas water heater 40,000 Btu/Hr
Vent-free heater +33,000 Btu/Hr
Total =73,000 Btu/Hr
* Do not include direct-vent gas appliances. Direct-vent draws combustion air from the outdoors and vents to the outdoors.
4. Compare the maximum Btu/I-Ir 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)
73,000 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 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 adjoining 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 6.
B. Vent room directly to the outdoors. See Ventilation Air From Outdoors, page 6.
C. Install a lower Btu/Hr heater, 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 unconfined space. You will need no
additional fresh air ventilation.
lo.._ 5

UNVENTED (VENT-FREE) GAS LOG HEATER
AIR FOR
COMBUSTION AND
VENTILATION
Continued
VENTILATION AIR
Ventilation Air From Inside
Building
This fresh air would come from an adjoining
unconfined space. When ventilating to an
adjoining unconfined space, you must pro-
vide two permanent openings: one within
12" of the ceiling and one within 12" of the
floor on the wall connecting the two spaces
(see options 1and 2, Figure 2). You can also
remove door into adjoining room (see op-
tion 3, Figure 2). Follow the National Fuel
Gas Code NFPA 54/ANSI Z223.1, Section
5.3, Air for Combustion and Ventilation for
required size of ventilation grills or ducts.
_kWARNING:Rework work-
sheet, adding the space of the
adjoining unconfined space. The
combined spaces must have
enough fresh air to supply all
appliances in both spaces.
Ventilation Air From Outdoors
Provide extra fresh air by using ventilation
grills or ducts. You must provide two per-
manent 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.
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 activa_: the power
vent.
Ventilation
Grills
Into Adjoining Or
Room, Remove
Option 1 Door into
Adjoining
Room,
Option C
3
12"
Ventilation Grills
Into Adjoining Room,
Option 2
Figure 2 -Ventilation Air from Inside Building
Outlet
Air
InletAir
Inlet
Air
I 1
Ventilated
Crawl Space
To Attic
To
Crawl
Space
Figure 3 - Ventilation Air from Outdoors
61o3425

OWNER'S MANUAL
INSTALLING
NOTICE: A qualified service per-
son 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 previously-used wood-burn-
ing fireplace, clean chimney flue
and firebox. Make sure flue is
free of any creosote. Creosote
will ignite if highly heated. In-
spect chimney flue for damage. If
damaged, operate heaterwith flue
damper closed.
A
J& WARNING: Seal any fresh air
vents or ash clean-out doors lo-
cated on floor or wall of fireplace.
If not, drafting may cause pilot
outage or sooting. Use a heat-
resistant sealant. Do not seal
chimney flue damper.
A
all WARNING: Never install the
heater
in a bedroom or bathroom
(except in vented application,
see page 10)
• 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 heater
in high traffic areas
•in windy or drafty areas
CAUTION: This heater cre-
ates warm air currents. These cur-
rents move heat to wall surfaces
next to heater. Installing heater
next to vinyl or cloth wall cover-
ings or operating heater where
impurities in the air (such as to-
bacco smoke) exist, may discolor
walls.
IMPORTANT."Vent-free heaters add mois-
ture 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 Com-
bustion and Ventilation, pages 4 through 6.
CHECK GAS TYPE
Use only prupane/LP gas. If your gas supply
is not propane/LP, do not install heater. Call
dealer where you bought heater for proper
type heater.
INSTALLATION AND
CLEARANCES (Vent-Free
Operation Only)
_WARNING: Maintain the mini-
mum clearances. If you can, pro-
vide greater clearances from
floor, ceiling, and adjoining wall.
MINIMUM FIREPLACE CLEARANCE
TO COMBUSTIBLE MATERIALS
Loq Size Side Wall
18", 24", 30" 16" Ceilinq
42
LOG SIZING REQUIREMENTS
Log Minimum Firebox Size
!Size Height Depth Front Width
!18" 17" 14" 20"
24" 17" 14" 26"
30" 17" 14" 32"
_o3,r_ 7

UNVENTED (VENT-FREE) GAS LOG HEATER
INSTALLING
Continued
Carefully follow the instructions below. This
will ensure safe installation into a masonry
or U.L. listed manufactured fireplace.
Minimum Wall and Ceiling
Clearances (see Figure 4)
A. Clearances from the side of the
fireplace opening to any combustible
wall should not be less than 16 inches.
B. Clearances from the top of the fireplace
opening to the ceiling should not be less
than 42 inches.
NOTICE: Manual control heaters
may be used as a vented product.
Ifso, you must always run heater
with chimney flue damper open.
If running heater with damper
open, non-combustible material
above fireplace opening is not
needed. Go to Installing Damper
Clamp Accessory for Vented
Operation, page 10.
Minimum Non Combustible
Material Clearances
If Not Using Mantel
Note: If using a mantel, go to page 9. If not
using a mantel, follow the information on
this page.
You must have non combustible material(s)
above the fireplace opening. Non combus-
tible materials (such as slate, marble, tile,
etc.) must be at least 1/2 inch thick. With
sheet metal, you must have non combustible
material behind it. Non combustible mate-
rial must extend at least 8" up (for all mod-
els). If non combustible material is less than
12", you must install the fireplace hood
accessory (24" and 30" models only). See
chart below and Figure 5 for minimum
clearances.
IMPORTANT: If you cannot meet these mini-
mum clearances, you must operate heater
with chimney flue damper open. Go to In-
stalling Damper Clamp Accessory for
Vented Operation, page 10.
Non-Combustible
Material Distance (A)
12" or more
Between 8" and 12"
Less than 8"
Requirements for
Safe Installation
Non combustible material OK.
24" or 30" Models: Install fireplace hood accessory
(GA6050 or GA6052, see Acsessodes, page 38).
18" Model: Non combustible matedal OK. No hood
accessory needed.
Non combustible matedal 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.
/
16"
_-2"
I" II
j L
II
Heat Resistant
Material
_1_ mm
/
/
/(A)
/
/
/
/'r
Figure 4 -Minimum Clearance to Wall and Ceiling Figure 5- Heat Resistant Material(Slate, Marble, Tile,etc.)Above
Fireplace
81o3425

OWNER'S MANUAL
INSTALLING
Continued
Minimum Non Combustible
Material Clearances
If Using Mantel
You must have non combustible material(s)
above the fireplace opening. Non combus-
tible materials (such as slate, marble, tile,
etc.) must be at least 1/2 inch thick. With
sheet metal, you amst have non combustible
material behind it. Non combustible mate-
rial must extend at least 8 inches up (for all
models). If non combustible material is less
than 12", you must install the fireplace hood
accessory (24" and 30" models only). Even
if non combustible material is more than
12", you may need the hood accessory to
deflect heat away from your mantel shelf.
See chart below and Figures 6 and 7for
minimum clearances.
IMPORTANT:If you cannot meet these mini-
mum clearances, you must operate heater
with chimney flue damper open. Go to In-
stalling Damper Clamp Accessory for
Vented Operation, page 10.
Mantel Clearances
In addition to meeting non-combustible
mateFlal clearances, you must also meet
required clearances between fireplace open-
ing and mantel shelf. If you do not meet the
clearances listed below, you will need a
hood.
Determining Minimum Mantel Clearance
If you meet minimum clearance between
mantel shelf and top of 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 clear-
ances shown in Figure 7 when using hood.
If your installation does not meet the mini-
mumclearances shown in Figure7, you must:
•operate the logs only with the flue
damper open, OR
• raise the mantel to an acceptable
height, OR
• remove the mantel.
Non Combustible
Material Distance (A)
12"or more
Between8"and 12"
Less than 8"
Requirements for
Safe installation
Non combustible material OK.
24" or 30" Models: Install fireplace hood accessory
(GA6050 or GA6052, see Accessories, page 38).
18" Model: Non combustible material OK. No hood
accessory needed.
Non combustible 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.
Mantel Shelf
10'
Minimum Non-
Combustible
Material 12" 20" 241,_" 27112 .
18112 M
Minimum Non- Distances to
Combusiible Underside of
//_ Matedal Height Mantel
Figure 6 -Minimum Mantel Clearances Without Using Hood
Underside of
Mantel Shelf
All minimum
distar_ces are
in inches
Log Set
30" <_ 24'/30" Models
_0*-<_18"Model
• Top of Fireplace
JOpening
Mantel Shelf
Minimum Non-
Combustible
Material _" 112" 15" 18"
_lin.
r
Hood Distances to
(GA6050, GA6052) Underside of
Mantel
Underside of
Mantel Shelf
All minimum
d_stancesare
in inches
Log Sets
_0"_18", 24",
& 30" Models
Top of Fireplace
-'/ Opening
Figure 7- Minimum Mantel Clearances When Using Hood
I034Z5 9

UNVENTED (VENT-FREE) GAS LOG HEATER
INSTALLING
Continued
Floor Clearances
A. ff installing appliance on the floor level,
you must maintain the minimum
distance of 14" to combustibles (see
Figure 8).
B. If combustible materials are less than
14" from the fireplace, you must install
appliance at least 5" above the
combustible flooring (see Figure 9).
]
/_ Combustible
14n. '_/aterial
_\ Non-Combustible
Material
Figure 8 -Minimum Fireplace Clearances If Installed at Floor Level
INSTALLING DAMPER
CLAMP ACCESSORY FOR
VENTED OPERATION
Note: When used as a vented beater, appli-
ance must be installed only in asolid-fuel
burning fueplace with a working flue and
constructed of non combustible material.
ffyour heater is amanually 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 fireplace 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.
Ifreasons number 1or2above apply to you,
you must permanently open chimney flue
damper. You must install the damper clamp
accessory (to order, see Accessories, page
25). This will insure vented operation (see
Figure 10). The damper clamp will keep
damper open. Installation instructions are
included with clamp accessory.
See chart below for minimum permanent
flue opening you must provide. Attach
damper clamp so the minimum permanent
flue opening will be maintained at all times.
Heath
Min.
Figure 9 - Minimum Fireplace Clearances Above Combustible Flooring
Chimney Minimum Permanent
Height (ft.) Flue Opening (sq. ins.)
6' to 15' 39 sq. inches
15' to 30' 29 sq.inches
Area of Various Standard Round Flues
Diameter (ins.) Area (sq. ins.)
5" 20 sq. inches
6" 29 sq. inches
7" 39 sq. inches
8" 51 sq. inches
Damper /
Clamp Damper
Damper
Damper...
Clamp _--x.-'_
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\\\
\\\
_Damper
Masonry Fireplace Manufactured Fireplace
Figure 10 -Attaching Damper Clamp
10 103425

OWNER'S MANUAL
INSTALLING
Continued
INSTALLING HEATER BASE
ASSEMBLY
WARNING: You must secure
this heater to fireplace floor, if
not, heater will move when you
adjust controls. Moving heater
may cause a gas leak.
_lb WARNING: If installing in a
sunken fireplace, special care is
needed. You must raise the fire-
place floor to allow access to
heater control panel. This will in-
sure adequate air flow and guard
against sooting. Raise fireplace
floor with non-combustible ma-
terial. Make sure material is se-
cure.
_CAUTION: Do not pick up
heater base assembly by burn-
ers. 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 bonds in thermostat bulb wire. Keep
thermostat bulb in mounting bracket.
Installation Items Needed
•hardware package (provided with heater)
•approved flexible gas hose (not provided)
(if allowed by local codes)
•sealant (resistant to LP gas, not provided)
• electric drill with 3/16" masonry drill bit
1. Apply pipe joint sealant lightly to male
threads of gas connector and install into
regulator. Connect approved flexible
gas hose to gas regulator of heater (see
Figure 11).
IMPORTANT: Hold gas regulator with
wrench when connecting fittings.
2. Position heater base assembly in
fireplace.
exeasoo euroaS :
allowed by localcodes)
Figure 11 -Attaching Flexible Gas Hose to Heater Gas Regulator
Masonry
Screw\
Figure 12 -Attaching Heater to Fireplace Floor
3. Mark screw locations through holes in
front of base. If installing in a brick-
bottom fireplace, mark screw locations
in mortar joint of bricks.
4. Remove heater base from fireplace.
5. Drill holes at marked locations using
3/16" drill bit. Drill at a 45 °angle.
6. Attach base to fireplace floor using
masonry screws in hardware
package (see Figure 12).
7. Connect to gas supply. See Connecting
To Gas Supply below.
CONNECTING TO GAS
SUPPLY
NOTICE: A qualified service per-
son must connect heater to gas
supply. Follow all local codes.
CAUTION: Never connect
heater directly to the propane/LP
supply. This heater requires an
external regulator (not supplied).
Install the external regulator be-
tween the heater and propane/LP
supply.
Installation Items Needed
Before installing heater, make sure you have
the items listed below.
• external regulator (supplied by
installer, see page 12)
• piping (check local codes)
• sealam (resistant to propane/LP gas)
• manual shutoff valve *
• test gauge connection *
• sediment trap
• tee joint
• pipe wrench
• An A.G.A. design-certified manual shutoff
valve with 1/8" NPT tap is an acceptable
alternative to test gauge connection. Pur-
chase the optional A.G.A. design-certified
manual shutoff valve from your dealer. See
Accessories, page 25. Continued
103425 11

UNVENTED (VENT-FREE) GAS LOG HEATER
INSTALLING
Continued
The installer must supply an external regu-
lator. The external regulator will reduce
incoming gas pressure. You must reduce
incoming gas pressure to between 11 and 14
inches of water, ffyou do not reduce incom-
ing gas pressure, heater regulator damage
could occur. Install external regulator with
the vent pointing down as shown in Figure
13. Pointing the vent down protects it from
freezing rain or sleet.
_IL WARNING: Never connect
heater to private (non-utility) gas
wells. This gas is commonly
known as wellhead gas.
_k 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 of1/2"
diameter or greater to allow
proper gas volume to heater. If
pipe is too small, undue loss of
pressure will occur.
Installation must include a manual shutoff
valve, union, and plugged 118" NPT tap.
Locate NPT tap within reach for test gauge
hook up. NPT tap must be upstream from
heater (see Figure 14).
Apply pipe joint sealant lighdy to male
threads. This will prevent excess sealant
from going into pipe. Excess sealant in pipe
could result in clogged heater valves.
_k CAUTION: Use pipe joint seal-
ant that is resistant to liquid pe-
troleum (LP) gas.
Install sediment trap in supply line as shown
in Figure 14. Locate sediment trap where it
is within reach for cleaning. Locate sedi-
ment trap where trapped matter is not likely
to freeze. A sediment trap traps moisture
and contaminants. This keeps them from
going into heater controls. If sediment trap
is not installed or is installed wrong, heater
may not run properly.
Propane/LP
SupplyTank
External
Regulator
Figure 13 -External Regulator With Vent Pointing Down
From External
Regulator
(11" W.C.** to
14" W.C. Pressure)
A.G.A. Design-Certified
Manual Shutoff Valve With
1/8" NPT Tap*
Approved Flexible Gas Hose
(if allowed by tocal codes)
iee Joint
Pipe -
Nipple
Cap
Sediment
Trap
Figure 14 -Gas Connection
3" Minimum Gas
Regulator
_CAUTION: Avoid damage to
regulator. Hold gas regulator wRh
wrench when conneeting it to gas
piping and/or fittings.
*Purchasethe optional A.G.A. design-cer-
tiffed manual shutoffvalve fromyourdealer.
See Accessories, page 25.
** Minimum inlet pressure for purpose of
input adjustment.
12 t0342s

OWNER'S MANUAL
INSTALLING
Continued
CHECKING GAS
CONNECTIONS
_1= WARNING: Test all gas pip-
ing and connections for leaks
after installing or servicing. Cor-
rect all leaks at once.
_kWARNING: Never useanopen
flame to check for a leak. Apply a
mixture of liquid soap and water
to all joints. Bubbles forming
show a leak. Correct all leaks at
once.
_k CAUTION: Make sure exter-
nal regulator has been installed
between propane/LP supply and
heater. See guidelines under Con-
necting to Gas Supply, page 15.
3. Check all joints from propane/LP
supply tank to manual shutoff valve
(see Figure 16).Apply mixture of liquid
soap and water to gas joints. Bubbles
forming show a leak.
4. Correct all leaks at once.
Pressure Testing Heater Gas
Connections
1. Open manual shutoff valve (see Figure
15).
2. Open propane/LP supply tank valve.
3. Make sure control knob of heater is in
the OFF position.
4. Check all joints from manual shutoff
valve to thermostat gas valve
(thermostat-controlled models) or
5.
6.
7.
control valve (variably-controlled
models) (see Figure 16)Apply mixture
of liquid soap and water to gas joints.
Bubbles forming show a leak.
Correct all leaks at once.
Light heater (see Operating Heater,
pages 14 through 16 [Thermostat-
Controlled Models] or pages 16
through 17 [Variable Manually-
Controlled Models]). Check all other
internal joints for leaks.
Turn off heater (see To Turn Off Gas to
Appliance, page 16 [Thermostat-
Controlled Models] or page 17
[Variable Manually-Controlled
Models]).
Pressure Testing Gas Supply
Piping System
Test Pressures In Excess Of 1/2 PSlG
1. Disconnect heater and its individual
manual 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
manual shutoff valve was connected.
3. Pressurize supply piping system by
either using compressed air or
opening propane/LP supply tank valve.
4. Check all joints of gas supply piping
system. Apply mixture of liquid soap
and water to gas joints. Bubbles
forming show a leak.
5. Correct all leaks at once.
6. Re-connect heater and manual shutoff
valve to gas supply. Check re-
connected fittings for leaks.
/_ Open
sMatu_flvalve_---_-/ /Jk____&___i:
_r_? Closed
Figure 15 - Manual Shutoff Valve
Propane/LP
Supply Tank
Manual
Shutoff
IValve
I
Thermostat Gas Valve or
Control Valve Location
Test Pressures Equal To or
Less Than 1/2 PSIG
1. Close manual shutoff valve (see Figure
15).
2. Pressurize supply piping system by
either using compressed air or opening
propane/LP supply tank valve.
Figure 16 -Checking Gas Joints
103_5 13

UNVENTED (VENT-FREE) GAS LOG HEATER
INSTALLING
Continued
INSTALLING LOGS
WARNING: Failure to position
the parts inaccordance with these
diagrams or failure to use only
parts specifically approved with
this heater may result in property
damage or personal injury.
Each log is marked with a number. These
numbers will help you identify the log when
installing. It is very important to install
these logs exactly as instructed. Do not
modify logs. Only use logs supplied with
heater.
1. Slide rear log (#1) into place behind
rear burner. Make sure flat areas at
bottom of log are behind front burner
(see Figure 16).
2. Slide bottom mid log (#2) into place in
behind front burner. Make sure tabs at
bottom of log are behind rear burner
(see Figure 16).
3. Place front log (#3) into place in front
of bottom mid log (#2) (see Figure 16).
Make sure notches on bottom rest on
4.
grate prongs.
Finally place top log (#4) over bottom
mid log (#2) by matching the notches
under log (#4) with the raised blocks
of log (#2) (see Figure 19).
Rear Log (#1)
Rgure 16 -Installing Rear Log
Bottom Mid Log (#2)
/
Figure 17- Installing Bottom Mid Log
Front Log (#3)
Figure 18 -Installing Front Log
Figure 19 -Installing TopLog
OPERATING
HEATER
Thermostat-Controlled
Models
FOR YOUR SAFETY I
READ BEFORE
LIGHTING
_lh WARNING: If you do not fol-
low these instructions exactly, a
fire or explosion may result caus-
ing property damage, personal
injury or loss of life.
A. This appliance has a pilot which must
be lightedbyhand. 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.
C.
D.
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 neighbor's phone. Follow
the gas suppHer's instructions.
•If you cannot reach your gas
supplier, call the fire department.
Use only your hand to push in or turn
the gas control knob. Never use tools.
If the knob will not push in or turn
by hand, don't try to repair it, call a
qualified service technician or gas
supplier. Force or attempted repair
may result in a fire or explosion.
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.
14 to,._€_

OWNER'S MANUAL
OPERATING
HEATER
Thermostat-Controlled
Models
Continued
l LIGHTINGINSTRUCTIONS l
4,
_lb WARNING:
• If fireplace has glass doors,
never operate this heater with
glass doors closed. If you op-
erate heater with doors closed,
heat buildup inside fireplace
will cause glass to burst. Also
if fireplace opening has vents
at the bottom, you must open
the vents before operating
heater.
•You must operate this heater
with afireplace screen in place.
Make sure fireplace screen is
closed before running heater.
5.
6.
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 on page 16. If you don't
smell gas, go to the next step.
Turn control knob counterclockwise
to the PILOT position.
Press in control knob for five (5)
seconds (see pages 16 and 17).
If control knob does not pop out
when released, contact a qualified
service person or gas supplier for
repairs.
Note: You may be running this
heater for the first time after hook-
ing up to gas supply. If so, the
control knob may need to be
pressed in for 30 seconds or less.
This will allow air to bleed from
the gas system.
With control knob pressed in, press
and release ignitor button. This will
light pilot. The pilot is attached to the
front burner. If needed, keep
pressing ignitor button until pilot
lights.
Note: If pilot does not stay lit,
contact a 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 16.
7. Keep control knob pressed in for 30
seconds after lighting piloL After 30
seconds, release control knob.
Note:Ifpilot goes out, repeat steps
3 through 7. This heater has a
safety interlock system. Wait one
(1) minute for system to reset be-
fore lighting pilot again.
8. Turn control knob counterclockwise
to desired heating level. The
burners should light. Set control
knob to any heat level between HI
and LO.
ACAUTION: Do not try to adjust
heating levels by using the
manual shutoff valve.
NOTICE: During initial operation
of new heater, burning logs will
give off a paper-burning smell.
Orange flame will also be present.
Open damper or window to vent
smell. This will only last a few
hours.
Note: Homeowners generally prefer to
operate their heater with the chimney
damper closed. This will put all the heat
into the room. However there may be
times you will desire the full flames of the
Hi heat setting but will find the heat
output excessive. You can open the chim-
ney damper (if you have one) fully or
partially to release some of the heat.
WARNING: Damper handle will be hot
if heater has been running.
1. STOP! Read the safety information
above.
2. Make sure manual shutoff valve is
fullyopen.
3. Turn control knob clockwise
tOthe OFF position.
IgnitorButton
\
Figure 21 -Control Knob and Ignitor Button Location
litorElectrode
Rgure 22 -Pilot
Control Knob
m34_ 15

UNVENTED (VENT-FREE) GAS LOG HEATER
OPERATING
HEATER
Thermostat-Controlled
Models
Continued
OPERATING
HEATER
Variable Manually-Controlled
Models
I TOTURNOFFGASI I FORYOUR I
TO APPLIANCE SAFETY READ
Shutting Off Heater BEFORE LIGHTING
1. Turn control knob clockwise
/F"" A to the OFF position.
Shutting Off Burners Only (pilot
stays lit)
1. Turn control knob clockwise
to the PILOT position.
I THERMOSTAT
CONTROL OPERATIONI
(Thermostat-Controlled
Models Only)
The thermostat control knob can be set to
any comfort level between Hi and Lo.
The thermostat will gradually modulate
the heat output and flame height from
higher to lower settings, or pilot, in order
to maintain the comfort level you select.
The ideal comfort setting will vary by
household depending upon the amount
of space to be heated, the output of the
central heating system, etc.
Note." Selecting the Hi setting with the
control knob will cause the burner to
remain fully on, without modulating down
in most cases.
MANUAL LIGHTING
PROCEDURE 1
1. Follow steps 1 through 5 under
Lighting Instructions, pages 20 and
21.
2. Depress control knob and light pilot
with match.
3. Keep control knob pressed in for 30
seconds after lighting pilot. After 30
•seconds, release control knob. Now
follow step 8, page 21.
_1= WARNING: If you do not fol-
low these instructions exactly, a
fire or explosion may result caus-
ing property damage, personal
injury or loss of life.
A. This appliance has a pilot which
must be lighted by hand. When
lighting the pilot, follow these
instructions exactly.
B. BEFORE LIGHTING smell all
around the appliance area for gas.
Be sure to smell next to the floor
because some gas is heavier than air
and will settle on the floor.
C.
V.
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 neighbor's phone. Follow
the gas supplier's instructions.
•If you cannot reach your gas
supplier, call the fire department.
Use only your hand to push in or turn
the gas control knob. Never use tools.
If the knob will not push in or turn
by hand, don't try to repair it, call a
qualified service technician or gas
supplier. Force or attempted repair
may result in a fire or explosion.
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.
LIGHTING
WARNING:
•If fireplace has glass doors,
never operate this heater with
glass doors closed. If you op-
erate heater with doors closed,
heat buildup inside fireplace
will cause glass to burst. Also
if fireplace opening has vents
at the bottom, you must open
the vents before operating
heater.
•You must operate this heater
with afireplace screen in place.
Make sure fireplace screen is
closed before running heater.
NOTICE: During initial operation
of new heater, burning logs will
give off a paper-burning smell.
Orange flame will also bepresent.
Open damper or window to vent
smell. This will only last a few
hours.
Note: Homeowners generally prefer to
operate their heater with the chimney
damper closed. This will put all the heat
into the room. However there may be
times you will desire the full flames of the
High heat setting but will find the heat
output excessive. You can open the chim-
ney damper (if you have one) fully or
partially to release some of the heat.
WARNING: Damper handle will be hot
if heater has been running.
1. STOP! Read the safety information
above.
2. Make sure manual shutoff valve is
fully open.
3. Press in and turn control knob
clockwise _to the OFF
position.
16 _034_

OWNER'S MANUAL
OPERATING
HEATER
Variable Manually-Controlled
Models
Continued
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 don't smell
gas, go to the next step.
5. Press in control knob and turn
counterclockwise _to the
PILOT position. Keep control knob
pressed in for five (5) seconds (see
Figure 23).
• If control knob does not pop out
when released, contact a qualified
service person or gas supplier for
repairs.
Note: You may be running this heater
for the first time after hooking up to
gas supply. If so, the control knob
may need to be pressed in for 30
seconds. This will allow air to bleed
from the gas system.
6. With control knob pressed in, press
and release ignitor button. This will
light pilot. The pilot is attached tothe
front burner. If needed, keep
pressing ignitor button until pilot
lights.
Note: If pilot does not light, 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 below.
7. Keep control knob pressed in for 30
seconds after lighting pilot. After 30
seconds, release control knob.
8.
Note: If pilot goes out, repeat steps 3
through 7.
Push in and turn control knob
counterclockwise _to the
HIGH position. Both burners should
light. Set control knob to desired
setting.
Ignitor Button Control Knob
Figure 23 -Control Knob and Ignitor Button Location
Ignitor Electrode
Figure 24 - Pilot
IVARIABLE CONTROLII 2
OPERATION • 3
The variable control valve can be set to
any heat setting and flame height desired
between high and low by simply turning
the control knob until that setting is at-
tained. Even the lowest setting provides
realistic flames and glowing embers from
two burners. Selecting higher settings pro-
duces greater heat output. This results in
increased heating comfort.
"_WARNING: Do not operate
heater between pilot and high. _-
_k CAUTION: Do nottrytoadjust
heating levels by using the
manual shutoff valve.
Turn the control knob clockwise
to the PILOT position.
Press in control knob and turn
clockwise _to the OFF
Position.
Shutting Off Burners Only (pilot stays
lit)
1. Turn the control knob clockwise
to the HIGH position.
2. Press in and turn control knob
clockwise _to the pilot
_ition.
MANUAL LIGHTINGPROCEDURE 1
1. Follow steps 1 through 5 under
Lighting Instructions, page 15.
2. Depress control knob and light pilot
with match.
ITO TURN OFF GASll ,
TO APPLIANCE
Shutting Off Heater
1. Press in and turn control knob
clockwise _to the HIGH
position.
Keep control knob pressed in for 30
seconds after lighting pilot. After 30
seconds, release control knob. Now
follow step 8, page 15.
1034_ 17

UNVENTED (VENT-FREE) GAS LOG HEATER
INSPECTING
BURNERS
Check pilot flame pattern and burner flame
patterns often.
PILOT FLAME PATTERN
Figure 25 shows a correct pilot flame pat-
tern. Figure 26 shows an incorrect pilot
flame pattern. The incorrect pilot flame is
not touching the thermocouple. This will
cause the thermocouple to cool. When the
thermocouple cools, the heater will shut
down.
Thermocouple Pilot Burner
FRONT BURNER FLAME
PATTERN
Figure 27 shows correct front burner flame
pattern. Figure 28 shows incorrect front
burner flame pattern. The incorrect burner
flame pattern shows yellow tipping at top of
blue flame.
_1= WARNING: If yellow tipping
occurs, your heater could pro-
duce increased levels of carbon
monoxide. If front burner flame
pattern shows yellow tipping, fol-
low instructions at bottom of this
page. Yellow flame on rear burner
is normal.
CLEANING AND
MAINTENANCE
WARNING: Turn off heater
and let cool before cleaning.
_k CAUTION: You must keep
control areas, burners, and cir-
culating air passageways of
heater clean. Inspect these areas
of heater before each use. Have
heater inspected yearly bya quali-
fled service person. Heater may
need more frequent cleaning due
to excessive lint from carpeting,
bedding material, etc.
Figure 25 - Correct Pilot Flame Pattern
Thermocouple Pilot Burner
NOTICE: Do not mistake orange
flames with yellow tipping. Dirt
or other fine particles are burned
by heater, causing brief patches
of orange flame.
ff front burner flame pattern is incorrect, as
shown in Figure 28
• turn heater off (see To Turn OffGas
toAppliance [Thermostat-Controlled
Models] page 16 or [Variable
Manually-Controlled Models] page
17)
• see Troubleshooting, pages 19
through 21
ODS/PILOT AND BURNERS
•Use a vacuum cleaner or small, soft
bristled brush to clean.
LOGS
•If you remove logs for cleaning, refer
to Installing Logs, page 19, to
properly replace logs.
• Replace log(s) if broken or chipped
(dime-sized or larger).
Ftgure 26 -Incorrect Pilot Flame Pattern
If pilot flame pattern is incorrect, as shown
in Figure 26
• turn heater off(see To Turn OffGas
toAppliance [Thermostat-Controlled
Models] page 16 or [Variable
Manually-Controlled Models]
above)
•see Troubleshooting, pages 19
through 21
CORRECTFLAMEPA'I-rERNATHIGH POSITION
Figure 27 - Correct Front Burner Flame Pattern
Yellow
3qpping At
Top of
Blue
Flame
INCORRECTFLAMEPATTERNAT HIGH POSITION
Figure 28 _Incorrect Front Burner Flame Pattern
18 103425

OWNER'S MANUAL
TROUBLE-
SHOOTING
Note: All Troubleshooting items are listed
in order of operation.
OBSERVED PROBLEM
_IL WARNING: Turn off and unplug heater and iet cool before servicing.
Only a qualified service person should service and repair heater.
_1_ CAUTION: Never use a wire, needle, or similar object to clean ODS/
pilot. This can damage ODS/pilot unit.
POSSIBLE CAUSE REMEDY
• When ignitor button is pressed, there is no
spark at ODS/pilot
l.
2.
3.
Ignitor electrode not connected to ignitor
cable
Ignitor cable pinched or wet
Piezo ignitor nut is loose
4. Broken ignitor cable
5. Bad piezo ignitor
6. Ignitor electrode broken
7. Ignitor electrode positioned wrong
1. Reconnect ignitor cable
2. Free ignitor cable if pinched by any
metal or tubing. Keep ignitor cable dry
3. Tighten nut holding piezo ignitor to base
panel of log set. Nut is located behind
base panel.
4. Replace ignitor cable
5. Replace piezo ignitor
6. Replace piezo ignitor
7. Replace piezo ignitor
When ignitor button is pressed, there is
spark at ODS/pilot but no ignition 1. Gas supply turned off or manual shutoff
valve closed
2. Control knob not in PILOT position
3. Control knob not pressed in while in
PILOT position
4. Air in gas lines when installed
5. Depleted gas supply
6. ODS/pilot is clogged
7. Gas regulator setting is not correct
1. Turn on gas supply or open manual
shutoff valve
2. Turn control knob to PILOT position
3. Press in control knob while in PILOT
position
4. Continue holding down control knob.
Repeat igniting operation until air is
removed
5. Contact local propane/LP gas company
6. Clean ODS/pilot (see Cleaning and
Maintenance, page 18) or replace ODS/
pilot assembly
7. Replace gas regulator
ODS/pilot lights but flame goes out when
control knob is released 1. Control knob not fully pressed in
2. Control knob not pressed in long enough
3. Safety interlock system has been
triggered (thermostat models only)
4. Manual shutoff valve not fully open
5. Pilot flame not touching thermocouple,
which allows thermoconple to cool,
causing pilot flame to go out. This
problem could be caused by one or both
of the following:
A) Low gas pressure
B) Dirty or partially clogged ODS/
pilot
6. Thermocouple connection loose at
control valve
7. Thermocouple damaged
8. Control valve damaged
1. Press in control knob fully
2. After ODS/pilot lights, keep control
knob pressed in 30 seconds
3. Wait one minute for safety interlock
system to reset. Repeat ignition
operation
4, Fally open manual shut-off valve
5. A) Contact local propane/LP gas
company
B) Clean ODS/pilot (see Cleaning and
Maintenance, page 18) or replace ODS/
pilot assembly
6. Hand tighten until snug, then tighten 1/
4 turn more
7. Replace thermocouple
g. Replace control valve
_19

UNVENTED (VENT-FREE) GAS LOG HEATER
TROUBLE-
SHOOTING
Continued
OBSERVED PROBLEM POSSIBLE CAUSE REMEDY
One or both burners do not light after ODS/
pilot is lit 1. Burner orifice(s) clogged
2. Inlet gas pressure is too low
3. Mistocated crossover tube
4. Burner orifice(s) diameter is too small
1. Clean burner(s) (see Cleaning and
Maintenance, page 18) or replace
burner orifice(s)
2. Contact local propane/LP gas company
3. Contact qualified service person
4. Replace burner orifice(s)
Delayed ignition of one or both burners 1. Manifold pressure is too low 1. Contact local propane/LP gas company
2. Burner orifice(s)clogged 2. Clean burner(s) (see Cleaning and
Maintenance, page 18) or replace
burner orifice(s)
3. Mislocated crossover tube 3. Contact qualified service person
Burner backfiring during combustion 1. Burner orifice is clogged or damaged 1. Clean burner (see Cleaning and
Maintenance, page 18) or replace
burner orifice
2. Damaged burne_" 2. Replace damaged burner
3. Gas regulator defective 3. Replace gas regulator
Yellow flame in front burner during burner 1. Not enough air 1. Check burner(s) for dirt and debris. If
combustion found, clean burner(s) (see Cleaning
and Maintenance, page 18)
2. Gas regulator defective 2. Replace gas regulator
Slight smoke or odor during initial opera- 1. Residues from manufacturing processes 1. Problem will stop after a few hours of
tion and logs curing operation
Moisture/condensationnoticedonwindows 1. Not enough combustion/ventilation air 1. Refer to Air for Combustion and
Ventilation requirements (page 4)
Heater produces a whistling noise when 1. Turning control knob to HI position 1. Turn control knob to LO position and
burners are lit when burners are cold let warm up for a minute
2. Air in gas line 2. Operate burners until air is removed
3. Air passageways on heater blocked 3.
4. Dirty or partially clogged burner 4.
orifice(s)
from line. Have gas line checked by
local propane/LP gas company
Observe minimum installation
clearances (see pages 8-10)
Clean burners (see Cleaning and
Maintenance, page 18) or replace
burner orifice(s)