Superior FVFM27NR User manual

INSTALLER: Leave this manual with the appliance.
CONSUMER: Retain this manual for future reference.
This appliance may be installed in an aftermarket permanently located, manufactured (mobile) home,
where not prohibited by local codes. This appliance is only for use with the type of gas indicated on the
rating plate. This appliance is not convertible for use with other gases.
WARNING: This appliance is for installation only in a solid-fuel burning masonry or UL127 factory-built
fireplace or in a listed ventless firebox enclosure. It is design-certified for these installations in accordance
with ANSI Z21.11.2. Exception: DO NOT install this appliance in a factory-built fireplace that includes
instructions stating it has not been tested or should not be used with unvented gas logs.
This is an unvented gas-fired heater. It uses air (oxygen) from the room in which it is installed. Provisions
for adequate combustion and ventilation air must be provided. Refer to Air for Combustion and Ventilation
section on Page 6 of this manual.
Installation and Operation Instructions
Unvented (Vent-Free) Gas Log Heater
Models
PFS
®
US
Report No. F10-087
FVFM27NR FVFM27PR
P/N 126848-01 REV. B 05/2017
P126848-01
WARNING:
FIRE OR EXPLOSION HAZARD
Failure to follow safety warnings exactly could result in serious injury, death, or property damage.
- 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.
• Leave the building immediately.
• 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 qualified installer, service agency or the gas supplier.

SuperiorFireplaces.us.com 126848-01B2
TABLE OF CONTENTS
Safety .................................................................. 2
Product Identification........................................... 5
Local Codes......................................................... 5
Unpacking............................................................ 5
Product Features................................................. 6
Air for Combustion and Ventilation...................... 6
Installation ........................................................... 9
Operation........................................................... 17
Inspecting Burners ............................................ 20
Cleaning and Maintenance................................ 21
Wiring Diagram.................................................. 22
Specifications .................................................... 22
Replacement Parts............................................ 22
Service Hints ..................................................... 22
Technical Services............................................. 22
Troubleshooting................................................. 23
Parts.................................................................. 27
Accessories....................................................... 29
Warranty............................................................ 31
SAFETY
WARNING: FIRE, EXPLOSION, AND ASPHYXIATION HAZARD
Improperadjustment,alteration,service,maintenance,orinstallationofthis
heater or its controls can cause death or serious injury.
Read and follow instructions and precautions in User’s Information Manual
provided with this heater.
WARNING:Thisapplianceisfor
installationonlyinasolid-fuelburn-
ing masonry or UL127 factory-built
fireplace or in a listed ventless fire-
boxenclosure.Itisdesign-certified
fortheseinstallationsinaccordance
with ANSI Z21.11.2. Exception:
DO NOT install this appliance in a
factory-built fireplace that includes
instructions stating it has not been
tested or should not be used with
unvented gas logs.
WARNING: This is an unvented
gas-firedheater.Itusesair(oxygen)
fromtheroominwhichitisinstalled.
Provisionsforadequatecombustion
andventilationairmustbeprovided.
Refer to Air for Combustion and
Ventilation section on Page 6 of
this manual.
Thisappliancemaybeinstalledinan
aftermarket,* permanently located,
manufactured(mobile)home,where
not prohibited by local codes.
This appliance is only for use with
the type of gas indicated on the
rating plate. This appliance is not
convertibleforusewithothergases.
* Aftermarket: Completion of sale, not for
purpose of resale, from the manufacturer
WARNING:Thisproductcontains
and/or generates chemicals known
to the state of California to cause
cancer or birth defects or other re-
productive harm.
DANGER: Carbon monoxide
poisoning may lead to death!
WARNING:Vent-freeproductsare
prohibitedforbedroomandbathroom
installation in the Commonwealth of
Massachusetts.

SuperiorFireplaces.us.com
126848-01B 3
SAFETY
Continued
IMPORTANT: Read this owner’s
manual carefully and completely
beforetryingtoassemble,operateor
service this fireplace. Improper use
of this fireplace can cause serious
injury or death from burns, fire, ex-
plosion,electricalshockandcarbon
monoxide poisoning.
WARNING: Any change to this
heater or its controls can be dan-
gerous.
WARNING: Do not use a blower
insert,heatexchangerinsertorother
accessorynotapprovedforusewith
this heater.
Carbon Monoxide Poisoning: Early signs
of carbon monoxide poisoning resemble the
flu, with headaches, dizziness, or nausea.
If you have these signs, the heater may not
be working properly. Get fresh air at once!
Have heater serviced. Some people are
more affected by carbon monoxide than oth-
ers. 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 propane/LP gases are fuel gases. Fuel
gases are odorless. An odor-making agent
are added to fuel gases. The odor helps you
detect a fuel gas leak. However, the odor
added to fuel gas can fade. Fuel 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.
Due to high temperatures, the ap-
pliance should be located out of
traffic and away from furniture and
draperies.
Do not place clothing or other flam-
mable material on or near the appli-
ance. Never place any objects on
the heater.
Heaterbaseassemblybecomesvery
hot when running heater. Children
and adults should be alerted to the
hazard of high surface temperature
and should stay away to avoid
burns or clothing ignition. Heater
will remain hot for a time after shut-
down. Allow surface to cool before
touching.
Young children should be carefully
supervisedwhentheyareinthesame
room with the appliance. When us-
ingthehand-heldremoteaccessory,
keepselectorswitchintheOFFposi-
tiontopreventchildrenfromturning
on burners with remote.
You must operate this heater with
the fireplace screen and hood in
place. Make sure fireplace screen
andhoodareinplacebeforerunning
heater. The fireplace screen shall
have openings for introduction of
combustion air.
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.Alteredburnerpatternscan
cause sooting.
WARNING: Do not place log
scraps or volcanic stone on burner.
Keep the appliance area clear and
free from combustible materials,
gasolineandotherflammablevapors
and liquids.
Solid-fuels shall not be burned in a
fireplaceinwhichanunventedroom
heater is installed.

SuperiorFireplaces.us.com 126848-01B4
SAFETY
Continued
2. Do not place propane/LP supply tank(s)
inside any structure. Locate propane/LP
supply tank(s) outdoors (propane/LP units
only).
3. To prevent performance problems, the use
of a propane/LP tank of less than 100 lbs.
capacity is not recommended (propane/LP
units only).
4. If you smell gas
• shut off gas supply
• do not try to light any appliance
• do not touch any electrical switch; do not
use any phone in your building
• immediately call your gas supplier from a
neighbor’sphone.Follow the gas supplier’s
instructions
• if you cannot reach your gas supplier, call
the fire department
5. This heater shall not be installed in a bed-
room or bathroom unless installed as a
vented appliance (see Installing Damper
Clamp Accessory for Vented Operation,
Page 12).
6. WARNING: Before installing in a solid
fuel burning fireplace, the chimney flue
and firebox must be cleaned of soot,
creosote, ashes and loose paint by a
qualified chimney cleaner. Creosote will
ignite if highly heated. A dirty chimney flue
may create and distribute soot within the
house. Inspect chimney flue for damage.
If damaged, repair flue and firebox before
operating heater.
7. Do not burn solid-fuel in a fireplace in which
a vent-free room heater is installed.
8. If fireplace has glass doors, never operate
this heater with glass doors closed. Any
glass doors shall be fully opened when the
appliance is in operation. If you operate
heaterwithdoors closed, heatbuildup inside
Installation and repair should be done
by a qualified service person. The ap-
pliance should be inspected before use
and at least annually by a professional
service person. More frequent cleaning
may be required due to excessive lint
from carpeting, bedding material, etc. It
is imperative that control compartments,
burners, and circulating air passageways
of the appliance be kept clean.
fireplacewillcauseglass to burst.Make sure
thereareno obstructions acrossopenings of
fireplace.
9. Thislog heater isdesigned to besmokeless.
If logs ever appear to smoke, turn off heater
and call a qualified service person. NOTE:
Duringinitial operation, slight smoking could
occur due to log curing and heater burning
manufacturing residues.
10. To prevent the creation of soot, follow the
instructions in Cleaning and Maintenance,
Page 21.
11. Before using furniture polish, wax, carpet
cleaner, or similarproducts, turn heateroff.If
heated,the vapors from these productsmay
create a white powder residue within burner
box or on adjacent walls or furniture.
12. This heater needs fresh, outside air ven-
tilation to run properly. This heater has an
oxygen depletion sensing (ODS) pilot light
safety system. The ODS shuts down the
heater if not enough fresh air is available.
See Air for Combustion and Ventilation,
Page 6. If heater keeps shutting off, see
Troubleshooting, Page 23.
13. Do not run heater
• whereflammableliquids or vaporsareused
or stored
• under dusty conditions
14. Do not use this heater to cook food or burn
paper or other objects.
15. Do not use this room heater if any part has
been under water. Immediately call a quali-
fied service technician to inspect the room
heater and to replace any part of the control
system and any gas control which has been
under water.
16. Do not operate heater if any log is broken.
Do not operate heater if a log is chipped
(dime-sized or larger).
17. Turn heater off and let cool before servic-
ing, installing, or repairing. Make sure the
selector switch is in the OFF position. Only
a qualified service person should install,
service, or repair heater.
18. Make sure the selector switch is in the OFF
position when you are away from home for
long periods of time.
19. This heater must not be connected to any
external electrical source.
20. Operating heater above elevations of 4,500
feet could cause pilot outage.
21. Provide adequate clearances around air
openings.
1. WARNING: This appliance isonly for
use with the type of gas indicated on
the rating plate.This appliance is not
convertible for use with other gases.

SuperiorFireplaces.us.com
126848-01B 5
Figure 1 - Product Identification
PRODUCT IDENTIFICATION
22. Solid fuels shall not be burned in a fireplace
inwhichan unvented room heaterordecora-
tive appliance is installed.
23. When installing as a vented appliance in a
manufactured home or mobile home, the
installation must conform with the Manu-
factured Home Construction and Safety
Standard, Title 24 CFR, Part 3280 or when
standard is not applicable, with Manufac-
tured Home Installations Standard, ANSI/
NCSBCS A225.1/NFPZ 501A.
Control Knob
Piezo
Igniter
Log Set
Base Assembly
Optional
Remote
Control
Flame Adjustment Knob
Optional Selector Switch
Left
Side
Right
Side
Front
LOCAL CODES NOTE:Donot pick up appliance base as-
semblybyburners. Thiscould damagethe
appliance.Always handle base assembly
by grate.
2. Remove all protective packaging applied
to logs and appliance for shipment.
3. Check appliance for any shipping dam-
age. If appliance is damaged, promptly
inform dealer where you purchased the
appliance.
Install and use appliance with care. Follow all
localcodes.Intheabsenceof localcodes, use
the latest edition of The National Fuel Gas
Code, ANSI Z223.1/NFPA 54*.
*Available from:
American National Standards Institute, Inc.
25 West 43rd Street, 4th floor
New York, NY 10036
National Fire Protection Association, Inc.
1 Batterymarch Park
Quincy, MA 02169-7471
UNPACKING
1. Remove logs and heater base assembly
from carton.
CAUTION:Donotremovethe
data plates from the grate as-
sembly. The data plates contain
important warranty and safety
information.
COMMONWEALTH OF MASSACHUSETTS REQUIREMENTS
These appliances are approved for installation in the US state of Massachusetts if the fol-
lowing additional requirements are met:
• Un-vented Room Heaters shall be installed in accordance with 527 CMR 30.
• Installation and repair must be done by a plumber or gas fitter licensed in the Common-
wealth of Massachusetts.
• Theflexible gas line connector usedshallnot exceed 36 inches (92 centimeters)inlength.
• The individual manual shut-off must be a T-handle type valve.
• Unvented appliances may NOT be installed in bedrooms or bathrooms.
• A working smoke detector must be installed in the area where vent-free appliances are
installed.
Seller of unvented propane or natural gas-fired supplemental room heaters shall provide
to each purchaser a copy of 527 CMR 30 upon sale of the unit.

SuperiorFireplaces.us.com 126848-01B6
PRODUCT FEATURES
OPERATION
Thisheateriscleanburning.Itrequiresnooutside
venting. There is no heat loss out a vent or up
a chimney. Heat is generated by realistic, danc-
ing yellow flames. This heater is designed for
vent-free operation with flue damper closed. It
has been tested and approved toANSI Z21.11.2
standard for unvented heaters. State and local
codesinsomeareas prohibitthe useof vent-free
heaters. This heater may also be operated as
a vented decorative product (ANSI Z21.60) by
opening flue damper (non-thermostat operation
only).
APPLICATION
Thesemultisidedlogsaredesigned tobe equally
beautiful when viewed from any angle. They are
designed specifically for use in see-through,
peninsula, and island fireboxes with multiple
openings. You may also install this log heater in
a standard firebox.
SAFETY PILOT
Thisheaterhas a pilot with an Oxygen Depletion
Sensing(ODS)safety shutoff system.The ODS/
pilotis a requiredfeaturefor vent-free roomheat-
ers. The ODS/pilot shuts off the heater if there is
not enough fresh air.
PIEZO IGNITION SYSTEM
This heater has a piezo igniter. This system
requires no matches, batteries, or other sources
to light heater.
AIR FOR COMBUSTION AND VENTILATION
Today’s homes are built more energy efficient
than ever. New materials, increased insulation
andnew constructionmethods helpreduce heat
lossin homes.Homeowners apply weatherstrip
and caulk around windows and doors to keep
thecold air outand the warm airin. During heat-
ing months, homeowners want their homes as
airtight as possible.
While it is good to make your home energy
efficient, your home needs to breathe. Fresh
air must enter your home. All fuel-burning ap-
pliances need fresh air for proper combustion
and ventilation.
Exhaust fans, some fireplaces, clothes dryers
and some fuel-burning appliances draw air from
thehousetooperate.Youmustprovideadequate
fresh air for these appliances. This will ensure
properventingofvented fuel-burningappliances.
PROVIDING ADEQUATE VENTILATION
The following are excerpts from National Fuel
Gas Code,ANSI Z223.1/NFPA54, Air for Com-
bustion and Ventilation.
All spaces in homes fall into one of the three
WARNING: This heater shall not be
installed in a room or space unless the
required volume of indoor combustion
air is provided by the method described
in the National Fuel Gas Code, ANSI
Z223.1/NFPA 54, the International Fuel
Gas Code, or applicable local codes.
Read the following instructions to en-
sure proper fresh air for this and other
fuel-burning appliances in your home.
following ventilation classifications:
1. Unusually Tight Construction
2. Unconfined Space
3. Confined Space
The information on Pages 6-8 will help you clas-
sifyyour space andprovide adequateventilation.
Unusually Tight Construction
The air that leaks around doors and windows
mayprovide enough freshair forcombustionand
ventilation. However, in buildings of unusually
tight construction, you must provide additional
fresh air.
Unusually tight construction is defined as
construction where:
a. walls and ceilings exposed to the outside
atmosphere have a continuous water
vapor retarder with a rating of one perm
(6 x 10
-11
kg per pa-sec-m
2
) 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, elec-
trical and gas lines and at other openings.
If your home meets all three criteria above,
you must provide additional fresh air. See
Ventilation Air From Outdoors, Page 8.
If your home does not meet all three criteria
above, proceed to Determining Fresh-Air
Flow For Heater Location, below.
Confined and Unconfined Space
The National Fuel Gas Code, ANSI Z223.1/
NFPA54 allows two methods for determining
whether the space in which the heater is being

SuperiorFireplaces.us.com
126848-01B 7
AIR FOR COMBUSTION AND VENTILATION
Continued
installedis confinedorunconfined space.The
standardmethod defines aconfinedspace as
a space whose volume is less than 50 cubic
feetper 1,000Btu/hr(4.8 m3per kw)of the ag-
gregateinputrating 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/hr (4.8 m3per kw) of
the aggregate input rating of all appliances
installedin thatspace. Roomscommunicating
directlywith thespacein whichthe appliances
areinstalled*, through openings notfurnished
with doors, are considered a part of the un-
confined space.
Where the air infiltration rate of a structure is
known,the KnownAirInfiltration Rate Method
may be used. Follow The National Fuel Gas
Code, ANSI Z223.1/NFPA 54 to use this
method to determine if the space is confined
or unconfined.
* Adjoining rooms are communicating only if
thereare doorlesspassageways orventilation
grills between them.
DETERMINING FRESH-AIR FLOW
FOR HEATER LOCATION
Determining if You Have a Confined or
Unconfined Space Using the Standard
Method
Use this work sheet to determine if you have
a confined or unconfined space.
Space: Includestheroom in whichyouwillinstall
fireplace plus any adjoining rooms with door-
less passageways or ventilation grills between
the rooms.
1. Determine the volume of the space (length
x width x height).
Lengthx 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 fireplace __________Btu/Hr
Gas water heater* __________Btu/Hr
Gas furnace __________Btu/Hr
Vented gas heater __________Btu/Hr
Gas fireplace logs __________Btu/Hr
Other gas appliances* + _________Btu/Hr
Total = _________Btu/Hr
* Do not include direct-vent gas appliances.
Direct-vent draws combustion air from the
outdoors and vents to the outdoors.
Example:
Gas water heater __________Btu/Hr
Vent-free fireplace + _________Btu/Hr
Total = _________Btu/Hr
4.
Compare the maximum Btu/Hr the space can
support with the actual amount of Btu/Hr used.
_______ Btu/Hr (maximum can support)
_______ Btu/Hr (actual amount 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 sup-
port. 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
anunconfinedspace,remove door toadjoin-
ing room or add ventilation grills between
rooms. See Ventilation Air From Inside
Building, Page 8.
B. Vent room directly to the outdoors. See
Ventilation Air From Outdoors, Page 8.
C. Install a lower Btu/Hr fireplace, if lower Btu/
Hr size makes room unconfined.
If the actual Btu/Hr used is less than the maxi-
mum Btu/Hr the space can support, the space is
anunconfinedspace.You will needno additional
fresh air ventilation.
40,000
33,000
73,000

SuperiorFireplaces.us.com 126848-01B8
Outlet
Air
Ventilated
Attic
Outlet
A
ir
Inlet
Air
Inlet Air Ventilated
Crawl Space
To
Crawl
Space
To Attic
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
adjoiningunconfinedspace,you mustprovide
twopermanent openings:one within12" ofthe
ceiling and one within 12" of the floor on the
wall connecting the two spaces (see options
1and2, Figure 2).Youcanalsoremovedoor
into adjoining room (see option 3, Figure 2).
Follow the National Fuel Gas Code, ANSI
Z223.1/NFPA 54, Air for Combustion and
Ventilation for required size of ventilation
grills or ducts.
Figure 2 - Ventilation Air from Inside
Building
Or
Remove
Door into
Adjoining
Room,
Option
3
Ventilation Grills
Into Adjoining Room,
Option 2
Ventilation
Grills Into
Adjoining
Room,
Option 1
12"
12"
Ventilation Air From Outdoors
Provide extra fresh air by using ventilation
grills or ducts. You must provide two perma-
nent openings: one within 12" of the ceiling
andonewithin12" 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, 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.
Figure 3 - Ventilation Air from Outdoors
WARNING:Iftheareainwhich
theheatermaybeoperateddoes
notmeettherequiredvolumefor
indoorcombustionair,combus-
tion and ventilation air shall be
provided by one of the methods
described in the National Fuel
Gas Code, ANSI Z223.1/NFPA
54, the International Fuel Gas
Code,orapplicablelocalcodes.

SuperiorFireplaces.us.com
126848-01B 9
INSTALLATION
NOTICE:Thisapplianceisintended
for supplemental heating. Use this
heater along with your primary
heating system. Do not install this
heaterasyourprimaryheatsource.
Ifyouhaveacentralheatingsystem,
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 service
person must install heater. Follow
all local codes.
NOTICE: State or local codes may
onlyallowoperationofthisappliance
inaventedconfiguration.Checkyour
state or local codes.
WARNING: Before installing in a
solidfuelburningfireplace,thechim-
neyflueandfireboxmustbecleaned
of soot, creosote, ashes and loose
paintbyaqualifiedchimneycleaner.
Creosote will ignite if highly heated.
Adirty chimney flue may create and
distribute soot within the house.
Inspect chimney and firebox flue
for damage. If damaged, repair flue
and firebox before operating heater.
WARNING:Anyoutsideairducts
and/or ash dumps in the fireplace
shallbe permanentlyclosedattime
of appliance installation.
WARNING: Seal any fresh air
ventsorashclean-outdoorslocated
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.
WARNING: Never install the
heater
• in a bedroom or bathroom
unless installed as a vented
appliance, see Page 12
• in a recreational vehicle
• wherecurtains, furniture,cloth-
ing, or other flammable objects
are less than 42" from the front,
top, or sides of the heater
• in high traffic areas
• in windy or drafty areas
CAUTION: This heater creates
warm air currents. These currents
move heat to wall surfaces next to
heater.Installingheaternexttovinyl
orclothwallcoveringsoroperating
heater where impurities (such as,
but not limited to, tobacco smoke,
aromatic candles, cleaning fluids,
oil or kerosene lamps, etc.) in the
air exist, may discolor walls or
cause odors.
IMPORTANT:Vent-freeheaters addmoisture
totheair.Although this is beneficial, installing
heater in rooms without enough ventilation
air may cause mildew to form from too much
moisture.See Air forCombustion and Ventila-
tion,Page 6.
CHECK GAS TYPE
Use only the correct type of gas (natural or
propane/LP). If your gas supply is not the
correct gas type, do not install heater. Call
dealer where you bought heater for proper
type heater.
WARNING: This appliance is
equipped for either natural gas or
propane/LP gas but not both. Gas
type is indicated on the rating plate.
Field conversion is not permitted.

SuperiorFireplaces.us.com 126848-01B10
LOG SIZING REQUIREMENTS
Log
Size Minimum Firebox
Height Depth Width
27" 17" 19" 32"
Carefully follow the instructions below. This
will ensure safe installation into a masonry,
UL127-listedmanufactured fireplace,orlisted
vent-free firebox.
Minimum Clearances For Side
Combustible Material, Side Wall, and
Ceiling
A. Clearances from side of fireplace cabinet
to any combustible material and wall
should follow diagram in Figure 4.
Example:Thefaceof amantel,bookshelf,
etc. is made of combustible material and
protrudes 3-1/2" from the wall. This com-
bustiblematerialmustbe4" from the side
of the fireplace cabinet (see Figure 4).
NOTE: When installing your gas logs into
a manufactured firebox, follow firebox
manufacturer’s instructions for minimum
clearances to combustible materials.
B. Clearances from top of fireplace opening
to ceiling should not be less than 42".
INSTALLATION
Continued
Figure 4 - Minimum Clearance for
Combustible to Wall
*Minimum 16" from Side Wall
*
Example
Figure 5 - Heat Resistant Material (Slate,
Marble, Tile, etc.) Above Fireplace
MINIMUM NONCOMBUSTIBLE
MATERIAL CLEARANCES
If Not Using Mantel
NOTE: If using a mantel, proceed to If Using
Mantel, Page 11 If not using a mantel, follow
the information below.
Noncombustible
Material Distance
(A)
Requirements for Safe
Installation
12" or more Noncombustible mate-
rial OK.
Between 8" and
12" Install fireplace hood ac-
cessory (GA6050 - see
Accessories, Page 29).
Less than 8" Noncombustible material
must be extended to at
least 8". See Between
8" and 12", above. If you
cannot extend material,
you must operate heater
with flue damper open.
WARNING: Maintainthe minimum
clearances. Ifyou can, providegreater
clearances from floor, ceiling and
adjoining wall.
MINIMUM FIREPLACE CLEARANCE
TO COMBUSTIBLE MATERIALS
Side Wall 16", Ceiling 42", Front 36"
INSTALLATION AND CLEARANCES
(Vent-Free Operation Only) NOTICE:Manualcontrolheaters
maybeusedasaventedproduct.
Ifso,youmustalwaysrunheater
withchimneyfluedamperopen.
If running heater with damper
open, noncombustible material
above fireplace opening is not
needed.GotoInstallingDamper
Clamp Accessory for Vented
Operation, Page 12.
Maintain adequate clearances for accessibility for purposes
of servicing and proper operation.

SuperiorFireplaces.us.com
126848-01B 11
You must have noncombustible material(s)
above both fireplace openings. Noncombus-
tiblematerials (suchas slate,marble,tile, etc.)
must be at least 1/2" thick. With sheet metal,
you must have noncombustible material be-
hindit.Noncombustible material must extend
at least 8" up. If noncombustible material is
less than 12", you must install the fireplace
hood accessory. See Figure 5, Page 10 for
minimum clearances.
IMPORTANT:If you cannot meet these
minimum clearances, you must operate
heater with chimney flue damper open. Go
to Installing Damper Clamp Accessory for
Vented Operation, Page 12.
If Using Mantel
You must have noncombustible material(s)
abovethe fireplace opening. Noncombustible
materials (such as slate, marble, tile, etc.)
must be at least 1/2" thick. With sheet metal,
you must have noncombustible material be-
hindit.Noncombustible material must extend
at least 8" up. If noncombustible material is
less than 12", you must install the fireplace
hood accessory. Even if noncombustible
material is more than 12", you may need the
hood accessory to deflect heat away from
yourmantel shelf. SeeFigure 5, Page 10 and
Figures 6 and 7, for minimum clearances.
Figure 6 - Minimum Mantel Clearances
Without Using Hood
Minimum
Noncombustible
Material
Minimum
Noncombustible
Material Height
Distances to
Underside of
Mantel
Top of
Fireplac
e
Opening
Underside
of Mantel
Shelf
Mantel Shelf
12"
(A)
18" 20" 22" 24"
All
minimum
distances
are in
inches
2
1
/ 2 "
6"
8"
10"
Figure 7 - Minimum Mantel Clearances
When Using Hood
Minimum
Noncombustible
Material
8"
Min.
12" 15" 18" 20"
2½"
6"
8"
10"
12"
Distances to
Underside of
Mantel
Hood
(GA6050)
Top of
Fireplace
Opening
Undersid
e
of Mantel
Shelf
Mantel Shelf
INSTALLATION
Continued
MANTEL CLEARANCES
In addition to meeting noncombustible mate-
rial clearances, you must also meet required
clearances between fireplace openings and
mantel shelf on each side of the fireplace. 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.
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.
Minimum clearance requirements include any projections such
as shelves, window sills, mantels, etc. above the appliance.

SuperiorFireplaces.us.com 126848-01B12
Hearth
5"
Min.
Combustible
Material
INSTALLATION
Continued
Figure 9 - Minimum Fireplace Clearances
Above Combustible Flooring
INSTALLING DAMPER CLAMP
ACCESSORY FOR VENTED
OPERATION
NOTE: When used as a vented heater, ap-
pliance must be installed only in a solid-fuel
burningfireplacewitha working flue and con-
structed of noncombustible material.
If your heater is a manually controlled model,
you may use this heater as a vented product.
There are three reasons for operating your
heater in the vented mode:
1. Thefireplacedoesnot meettheclearance
to combustibles requirements for vent-
free operation
2. State or local codes do not permit vent-
free operation
3. You prefer vented operation
If reasons number 1 or 2 above apply to you,
you must permanently open chimney flue
damper. You must install the damper clamp
accessory (to order, see Accessories, Page
30). This will ensure 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 open-
ing will be maintained at all times.
Area of Various Standard Round Flues
Diameter Area
5" 20 sq. inches
6" 29 sq. inches
7" 39 sq. inches
8" 51 sq. inches
Chimney Height Minimum Permanent
Flue Opening
6' to 15' 39 sq. inches
15' to 30' 29 sq. inches
Figure 10 - Attaching Damper Clamp
Damper Clamp
Damper
Clamp Damper
Damper
Masonry Fireplace Manufactured
Fireplace
14"
Min.
Combustible
Material
Noncombustible Material
FLOOR CLEARANCES
A. If 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" to the fireplace, you must install ap-
pliance at least 5" above the top surface
of combustible flooring including tile and
carpet (see Figure 9).
Figure 8 - Minimum Fireplace Clearances
If Installed at Floor Level
Notice: If your installation does
not meet the minimum clear-
ances shown, you must do one
of the following:
• operate the logs only with
the flue damper open
• raise the mantel to an ac-
ceptable height
• remove the mantel

SuperiorFireplaces.us.com
126848-01B 13
IMPORTANT:Make sure the heater burner
is level. If heater is not level, heater will not
work properly.
Installation Items Needed
• hardware package (provided with heater)
• approved flexible gas hose (not provided)
(if allowed by local codes)
• sealant (resistant to propane/LP gas, not
provided)
• electric drill with 3/16" drill bit (metal or
masonry as applicable)
• flathead screwdriver
1. Apply pipe joint sealant lightly to male
threads of the fitting to be threaded into
gas control. Connect approved flexible
INSTALLATION
Continued
gas hose to gas control fitting in heater
(see Figure 11). IMPORTANT:Hold gas
fitting with wrench when connecting flex-
ible gas hose.
2. Locate two masonry screws in hardware
package.
3. Place heater base in fireplace.
4. Placelogsintheirproperpositiononheater
base. See Installing Logs, Page 16.
5. Centerheaterbase and logs front to back
and side to side in fireplace.
6. Carefully remove logs without moving
heater base.
7. Mark screw locations through one hole
on each side of mounting bracket (see
Figure 12). If installing in a brick bottom
fireplace, mark screw locations in mortar
joint of bricks.
8. Remove heater base from fireplace. If
installing optional control accessories,
do so at this time. Follow all directions
provided with accessory.
9. Drillholesat marked locationsusing 3/16"
drill bit.
10. Attach base assembly to fireplace floor
using two masonry screws (in hardware
package).
Figure 11 - Attaching Flexible Gas Hose
to Heater
Figure 12 - Attaching Base Assembly to
Fireplace Floor
Fitting
Flexible Gas
Hose (if allowed
by local codes)
Masonry
Screw
Mounting
Flanges
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.
CAUTION: Do not pick up heater
base assembly by burners. This could
damage heater. Only handle base
assembly by grates.
INSTALLING HEATER BASE
ASSEMBLY
WARNING: If installing in a sunken
fireplace, special care is needed. You
must raise the fireplace floor to allow
access to heater control panel. This
will ensure adequate air flow and guard
against sooting and controls being
damaged. Raise fireplace floor with
noncombustible material. Make sure
material is secure.
CAUTION: Do not remove the
data plates attached to the heater
base assembly. The data plates con-
tain important warranty and safety
information.

SuperiorFireplaces.us.com 126848-01B14
CAUTION: Use only new, black
iron or steel pipe. Internally-tinned
copper tubing may be used in certain
areas. Check your local codes. Use
pipe of 1/2" diameter or greater to
allow proper gas volume to heater.
If pipe is too small, undue loss of
volume will occur.
Installationmust includeanequipment shutoff
valve, union, and plugged 1/8" NPT tap. Lo-
cateNPTtapwithin reach for test gauge hook
up. NPT tap must be upstream from heater
(see Figure 14, Page 15).
IMPORTANT:Install equipment shutoffvalve
in an accessible location. The equipment
shutoff valve is for turning on or shutting off
the gas to the appliance.
Check your building codes for any special
requirements for locating equipment shutoff
valve to fireplaces.
Apply pipe joint sealant lightly to male NPT
threads.Thiswill prevent excess sealantfrom
going into pipe. Excess sealant in pipe could
result in clogged heater valves.
INSTALLATION
Continued
Figure 13 - External Regulator With Vent
Pointing Down (propane/LP gas only)
Propane/LP
Supply Tank External
Regulator
with Vent
Pointing
Down
Installation Items Needed
Before installing heater, make sure you have
the items listed below.
• external regulator (for propane/LP units
only, supplied by installer)
• piping (check local codes)
• sealant (resistant to propane/LP gas)
• equipment shutoff valve
• test gauge connection
• sediment trap
• tee joint
• pipe wrench
For propane/LP units, the installer must
supply an external regulator. The external
regulator will reduce incoming gas pressure.
You must reduce incoming gas pressure to
between 11" and 14" of water. If you do not
reduceincoming gas pressure,heaterregula-
tordamagecould occur.Install external regu-
lator with the vent pointing down as shown in
Figure 13. Pointing the vent down protects it
from freezing rain or sleet.
WARNING: A qualified service
person must connect heater to gas
supply. Follow all local codes.
WARNING: Never connect pro-
pane/LP heater directly to the pro-
pane/LP supply. This heater requires
an external regulator (not supplied).
Install the external regulator between
the heater and propane/LP supply.
WARNING: Never connect natural
gas heater to private (non-utility) gas
wells. This gas is commonly known
as wellhead gas.
WARNING: Use pipe joint sealant
that is resistant to liquid petroleum
(LP) gas.
CONNECTING TO GAS SUPPLY
Werecommend thatyouinstallsediment trap
insupply lineas shownin Figure 14, Page 15.
Locate sediment trap where it is within reach
for cleaning. Install in piping system between
fuel supply and heater. Locate sediment trap
where trapped matter is not likely to freeze.

SuperiorFireplaces.us.com
126848-01B 15
**Minimum inlet pressure forpurpose of input
adjustment.
Figure 14 - Gas Connection
Gas Control
3" Minimum
Approved Flexible Gas Hose
(if allowed by local codes)
Pipe Tee
Nipple Cap Joint
Sediment Trap
Natural Gas
From Gas Meter
(5" W.C.** to 10.5" W.C.
Pressure)
Propane/LP Gas
From External Regulator
(11" W.C.** to 14" W.C.
Pressure)
CHECKING GAS CONNECTIONS
INSTALLATION
Continued
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 equip-
mentshutoff valvefromgas supply piping
system. Pressures in excess of 1/2 psig
(3.5 kPa) will damage heater regulator.
2. Capoffopen endofgaspipewhere equip-
ment shutoff valve was connected.
3. Pressurizesupply piping system byeither
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 sys-
tem.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 15).
2. Pressurizesupply piping system byeither
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.
Figure 15 - Equipment Shutoff Valve
Open
Closed
Equipment
Shutoff
Valve
CAUTION: Avoid damage to con-
trol. Hold fitting with wrench when
connecting it to gas piping and/or
fittings.
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 detection fluid to
all joints. Bubbles forming show a
leak. Correct all leaks at once.
CAUTION: For propane/LP gas,
make sureexternal regulator hasbeen
installed between propane/LP supply
and heater. See guidelines under
Connecting to Gas Supply, Page 14.
A sediment trap traps moisture and contami-
nants.Thiskeeps them fromgoinginto heater
controls. If sediment trap is not installed or is
installed wrong, heater may not run properly.

SuperiorFireplaces.us.com 126848-01B16
INSTALLATION
Continued
Figure 18 - Installing Front (#1) and Rear
(#2) Logs
3. Check all joints from gas meter to equip-
ment shutoff valve for natural gas or
propane/LP supply to equipment shutoff
valve for propane/LP (see Figure 16 or
17). Apply a noncorrosive leak detection
fluid to gas joints. Bubbles forming show
a leak.
4. Correct all leaks at once.
PRESSURE TESTING HEATER GAS
CONNECTIONS
1. Openequipment shutoffvalve(seeFigure
15, Page 15).
2. Open main gas valve located on or near
gas meter for natural gas or open pro-
pane/LP supply tank valve.
3. Make sure control knob of heater is in the
OFF position.
4. Check all joints from equipment shutoff
valve to control valve (see Figure 16 or
17). Apply a noncorrosive leak detection
fluid to gas joints. Bubbles forming show
a leak.
5. Correct all leaks at once.
O
F
F
P
I
L
O
T
O
N
H
I
L
O
Rear
Log (#2)
Burner
Chassis
Grate
Burner
Port
Front
Log
(#1)
Figure 17 - Checking Gas Joints for
Propane/LP Gas
Figure 16 - Checking Gas Joints for
Natural Gas
Gas Meter
Equipment Shutoff Valve
Control Valve
Location
Control Valve
Location
Propane/
LP Supply
Tank Equipment Shutoff Valve
WARNING: Failure to posi-
tion the parts in accordance
with these diagrams or failure
to use only parts specifically
approved with this heater may
result in property damage or
personal injury.
CAUTION: After installa-
tion and periodically thereafter,
check to ensure that no flame
comes in contact with any log.
WiththeheatersettoHigh,check
toseeifflamescontactanylog.If
so,repositionlogsaccordingto
the log installation instructions
in this manual. Flames contact-
ing logs will create soot.
6. Light heater (see Operation, Pages 17).
Check all other internal joints for leaks.
7. Turn off heater (see To Turn Off Gas to
Appliance, Page 19).
INSTALLING LOGS
It is very important to install the logs exactly
as instructed. Do not modify logs. Only use
logs supplied with heater.
1. Place front log (#1) and rear log (#2) on
grate to fit as shown in Figure 18.
2. Place center insert log (#3) as shown in
Figure 19, Page 17.

SuperiorFireplaces.us.com
126848-01B 17
Figure 21 - Installing Log set (Top View)
Logs
Burner Ports
Figure 19 - Installing Center Insert Log (#3)
O
F
F
P
I
L
O
T
O
N
H
I
L
O
Center
Insert Log
(#3)
3. Place top left log (#4) and top right log
(#5) as shown in Figure 20.
4. Makesureopenareas of logs line up with
burner ports (see Figure 21). Logs will fit
securely on chassis.
IMPORTANT: Make sure log does not
cover any burner ports.
5. Place volcanic stone around base of
heater if desired.
Figure 20 - Installing Top Left (#4) and Top
Right Log (#5)
O
F
F
P
I
L
O
T
O
N
H
I
L
O
Top Left
Log (#4)
Top Right
Log (#5)
OPERATION
INSTALLATION
Continued
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 neighbor’s phone. Follow the
gas supplier’s 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, don’t try to repair it, call a quali-
fied service technician 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.

SuperiorFireplaces.us.com 126848-01B18
4. Press in and turn control knob clockwise
to the OFF position.
5. 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, Page 17. If you
don’t smell gas, go to the next step.
6. Press in and turn control knob counter-
clockwise to the PILOT position.
Press in control knob for five (5) seconds
(see Figure 22).
NOTE: You may be running this heater 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.
7. With control knob pressed in, press and
release igniter button. This will light pilot.
The pilot is attached to the front burner. If
needed,keeppressing igniter button until
pilot lights.
NOTE: If pilot does not stay lit, contact a
qualifiedserviceperson orgas supplierfor
repairs. Until repairs are made, light pilot
with match. To light pilot with match, see
Manual Lighting Procedure, Page 19.
8. Keep control knob pressed in for 30 sec-
ondsafter lighting pilot.After 30 seconds,
release control knob.
• If control knob does not pop out when
released, contact a qualified service
person or gas supplier for repairs.
NOTE: If pilot goes out, repeat steps 4
through 8.
9. Slightly push in and turn control knob
counterclockwise totheONposition.
10. Wait one minute and switch selector
switch to the ON position to light burner.
NOTE: AUTO is only functional when
using GWMT1, or GWMS2 optional ac-
cessories.
Figure 22 - Control Knob and Igniter
Button Location (Shown as Supplied, No
Control Options)
Flame Adjustment Knob
O
F
F
P
I
L
O
T
L
O
I
H
AUTO
OFF
ON
O
N
Control Knob
Igniter Button Selector
Switch
OPERATION
Continued
LIGHTING
INSTRUCTIONS
WARNING:
• If fireplace has glass doors,
never operate this heater with
glass doors closed. If you op-
erateheaterwithdoorsclosed,
heat buildup inside fireplace
willcauseglasstoburst.Make
suretherearenoobstructions
across openings of fireplace.
• You must operate this heater
with a fireplace screen in
place. Make sure fireplace
screen is closed before run-
ning heater.
NOTICE:Duringinitialoperation
of new heater, burning logs will
give off a paper-burning smell.
Opendamperor windowtovent
smell. This will only last a few
hours.
NOTE: Homeowners generally prefer to op-
erate their heater with the chimney damper
closed.Thiswill 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 chimney 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,
Page 17.
2. Makesureequipment shutoffvalve isfully
open.
3. Set switch in OFF position.
WARNING:Burnerwillcome
on automatically within one
minutewhentheselectorswitch
is in the ON position after the
pilot is lit.

SuperiorFireplaces.us.com
126848-01B 19
Figure 24 - Propane/LP Gas Pilot
Figure 23 - Natural Gas Pilot
Pilot Burner Igniter
Electrode
Pilot Burner Igniter
Electrode
TO TURN OFF GAS
TO APPLIANCE
Shutting Off Heater
1. Turn control knob clockwise to the
OFF position.
2a. Set selector switch in the OFF position.
2b. If Using Optional Hand-Held Remote:
Set selector switch in the OFF position to
prevent draining battery.
3. Close equipment shutoff valve (see Fig-
ure 15, Page 15).
11. Set flame adjustment knob to any level
between HI and LO.
12. To leave pilot lit and shut off burners only,
turn control knob clockwise to
the PILOT position, use remote control
manual OFF button, then set selector
switch in the OFF position.
CAUTION: Do not try to ad-
just heating levels by using the
equipment shutoff valve.
WARNING: Make sure the
selector switch is in the OFF
positionwhenyouareawayfrom
home for long periods of time.
Heater will come on automati-
cally with selector switch in the
ON position.
OPERATION
Continued
Figure 25 - Setting the Selector Switch,
Control Knob, and Flame Adjustment
Knob for Hand-Held Remote Operation
Selector Switch in Remote Position
(Optional Hand-Held Remote Control)
ON
OFF
REMOTE
O
F
F
P
I
L
O
T
L
O
I
H
O
N
Control Knob
in On Position
Flame
Adjustment Knob
Piezo
Igniter
MANUAL LIGHTING
PROCEDURE
1. Follow steps 1 through 6 under Lighting
Instructions,Page 18.
2. Press control knob and light pilot with
match.
3. Keep control knob pressed in for 30 sec-
ondsafter lighting pilot.After 30 seconds,
release control knob. Now follow steps 9
through 11 under Lighting Instructions,
Page 18.
OPTIONAL HAND-HELD
REMOTE OPERATION
All remote control accessories must be pur-
chased separately (see Accessories, Page
29). Follow instructions included with the
remote control.
NOTICE:Youmustlightthepilot
before using the hand-held re-
mote control unit. See Lighting
Instructions on Page 18.
After lighting, let pilot flame burn for about
one minute. Turn control knob to ON posi-
tion.Adjust flame adjustment knob anywhere
between HI and LO. Slide the selector switch
to the REMOTE position (see Figure 25).
NOTE: The burner may light if hand-held
remote was on when selector switch was last
turned off. You can now turn the burner on
andoff with thehand-heldremote control unit.
IMPORTANT:Donotleavetheselectorswitch
intheREMOTEorONpositionwhen the pilot
is not lit. This will drain the battery.

SuperiorFireplaces.us.com 126848-01B20
INSPECTING BURNERS
Figure 28 - Correct Pilot Flame Pattern
(Propane/LP Pilot Shown)
Pilot Burner
Thermocouple
Pilot Burner
Figure 29 - Incorrect Pilot Flame Pattern
(Propane/LP Pilot Shown)
If burner flame pattern is incorrect as shown
in Figure 31
• turn heater off (see To Turn Off Gas to Ap-
pliance, Page 19)
• see Troubleshooting, Page 23
Figure 30 - Correct Flame Pattern
Figure 31 - Incorrect Flame Pattern
Check pilot flame pattern and burner flame
patterns often.
PILOT FLAME PATTERN
Figure 28 showsa correct pilot flamepattern.
Figure 29 shows an incorrect pilot flame pat-
tern. The incorrect pilot flame is not touching
the thermocouple. When the thermocouple
cools, the heater will shut down.
If pilot flame pattern is incorrect, as shown
in Figure 29
• turn heater off (see To Turn Off Gas to Ap-
pliance, Page 19)
• see Troubleshooting, Page 23
NOTE:The pilotflameonnatural gasunits will
have a slight curve, but flame should be blue
and have no yellow or orange color.
BURNER PRIMARY AIR HOLES
Air is drawn into the burner through the holes
in the fitting at the burner entrance. These
holes may become blocked with dust or lint.
Periodicallyinspect these holesforany block-
age and clean if needed. Blocked air holes
will create soot.
MAIN BURNER
Periodicallyinspect allburner flameholes with
the heater running. All slotted burner flame
holes should be open with yellow flame pres-
ent. All round burner flame holes should be
open with a small blue flame present. Some
burner flame holes may become blocked by
debris or rust, with no flame present. If so,
turnoffheater andletcool. Removeblockage,
blocked burner flame holes will create soot.
BURNER FLAME PATTERN
Figure 30, shows a correct burner flame pat-
tern. Figure 31, shows an incorrect burner
flame pattern.
Bright yellow burner
flame; flame will be
blue next to burner
Dark orange
burner flame