Comfortflame MFBOD24NM User manual

WHEN USED AS AN OUTDOOR APPLIANCE
DANGER
CARBON MONOXIDE WARNING
• This appliance can produce
carbon monoxide which has
no odor.
• Using it in an enclosed
space can kill you.
• Never use this appliance in
an enclosed space such as
a camper, tent, car or home.
WARNING: For Outdoor Use Only.
DANGER
IF YOU SMELL GAS:
1. Shut off gas to appliance.
2. Extinguish any open flame.
3. If odor continues, keep away from the appli-
ance and immediately call your gas supplier
or fire department.
WARNING: Do not store gasoline or other flammable vapors and liquids in the vicinity of this or any
other appliance. An LP-cylinder not connected for use shall not be stored in the vicinity of this or any other
appliance.
WARNING: Improper installation, adjustment, alteration, service or maintenance can cause injury or
property damage. Read the installation, operating and maintenance instructions thoroughly before install-
ing or servicing this equipment.
WHEN USED AS INDOOR VENTED APPLIANCE
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redepartment.
— Installation and service must be performed by a qualified installer, service agency or the gas supplier.
Installation and Operation Instructions
Comfort Flame™ Outdoor Burner System
Models
MFBOD24NM MFBOD24PM
MFBOD30NM MFBOD30PM
Report No. F09-168
P/N 900570-00 Rev. NC 12/2015
PFS
®
US
WELCOME HOME TO WARMTH
TM
P900570-00

Comfortflame.US.com 900570-00_NC2
TABLE OF CONTENTS
Safety............................................................................................. 2
Product Identification..................................................................... 4
Local Codes ................................................................................... 4
Requirements for the Commonwealth of Massachusetts ..............4
Optional Remote Control Accessories ........................................... 4
Unpacking...................................................................................... 4
Product Features............................................................................ 4
Installation ..................................................................................... 5
Operation ..................................................................................... 16
Inspecting Burners....................................................................... 17
Cleaning and Maintenance ........................................................... 18
Specifications............................................................................... 19
Wiring Diagram............................................................................ 19
Troubleshooting ........................................................................... 20
Accessories.................................................................................. 25
Parts ............................................................................................ 26
Service Hints................................................................................ 24
Technical Service ......................................................................... 24
Replacement Parts....................................................................... 24
Warranty ...................................................................................... 31
Thank you for your purchase. We appreciate your
business!
Please carefully read and follow all instructions in this manual. Pay
special attention to all warnings and safety information.
Following these safety, care, and operation instructions will help
ensure many years of dependable and enjoyable service from your
appliance.
Please read and understand these instructions before installing
or operating.
SAFETY
WARNING: Improper installation, adjustment,
alteration, service or maintenance can cause injury
or property damage. Refer to this manual for correct
installation and operational procedures. For assis-
tance or additional information consult a qualified
installer, service agency or the gas supplier.
WARNING: This appliance is for installation only
in a solid-fuel burning masonry or UL127 factory-built
fireplace or in a listed outdoor appliance. Do not in-
stall this appliance in an unvented fireplace indoors.
WARNING: Fireplace must be operated only with
doors fully open.
This appliance may be installed in an aftermarket,*
permanently located, manufactured (mobile) home,
where not prohibited by local codes.
* Aftermarket: Completion of sale, not for purpose of resale, from
the manufacturer
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 product contains and/or generates
chemicals known to the state of California to cause
cancer or birth defects or other reproductive harm.
IMPORTANT: Read this owner’s manual carefully
and completely before trying to assemble, operate
or service this appliance. Improper use of this appli-
ance can cause serious injury or death from burns,
fire, explosion, electrical shock and carbon monoxide
poisoning.
DANGER: Carbon monoxide poisoning may lead
to death!
Carbon Monoxide Poisoning: Early signs of carbon monoxide poi-
soning resemble the flu, with headaches, dizziness or nausea. If you
have these signs, the appliance may not be working properly. Get
fresh air at once! Have appliance serviced. Some people are more
affected by carbon monoxide than others. These include pregnant
women, people with heart or lung disease or anemia, those under
the influence of alcohol and those at high altitudes.
Natural and Propane/LP gases are odorless. An odor-making agent is
added to these gases. 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 appliance.
WARNING: Any change to this appliance or its
controls can be dangerous.
Solid fuels shall not be burned in a fireplace where a
decorative appliance is installed.

Comfortflame.US.com900570-00_NC 3
SAFETY Continued
Due to high temperatures, the appliance should be
located out of traffic and away from furniture and
draperies.
Do not place clothing or other flammable material
on or near the appliance. Never place any objects on
the appliance.
Appliance base assembly becomes very hot when
running appliance. Keep children and adults away
from hot surface to avoid burns or clothing ignition.
Appliance will remain hot for a time after shutdown.
Allow surface to cool before touching.
Carefully supervise young children when they are in the
room with appliance. When using the hand-held remote
accessory, keep selector switch in the OFF position to
prevent children from turning on burners with remote.
You must operate this appliance with the fireplace
screen and hood in place. Make sure fireplace screen
and hood are in place before running appliance. The
fireplace screen shall have openings for introduction
of combustion air.
Keep the appliance area clear and free from combus-
tible materials, gasoline and other flammable vapors
and liquids.
1. This appliance is only for use with the type of gas indicated on the
rating plate. This appliance is not convertible for use with other
gases.
2. Do not place propane/LP supply tank(s) inside any structure. Locate
propane/LP supply tank(s) outdoors (propane/LP units only).
3. 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redepartment
4. This appliance shall not be installed in a bedroom or bathroom,
unless installed as a vented appliance. See Installing Damper
Clamp Accessory for Vented Operation, page 7. This gas log
set may not be installed as a vented appliance in a bedroom or
bathroom in the Commonwealth of Massachusetts.
5. 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 appliance.
6. If fireplace has glass doors, never operate this appliance with
glass doors closed. If you operate appliance with doors closed,
heat buildup inside fireplace will cause glass to burst. Make sure
there are no obstructions across openings of fireplace.
7. To prevent the creation of soot, follow the instructions in Cleaning
and Maintenance, page 18.
8. Before using furniture polish, wax, carpet cleaner or similar
products, turn appliance off. If heated, the vapors from these
products may create a white powder residue within burner box
or on adjacent walls and furniture.
9. Do not use this appliance as a wood burning appliance. Use only
the logs provided with the appliance. Do not burn solid fuels in
this appliance.
10.Do not run appliance
•whereammableliquidsorvaporsareusedorstored
•underdustyconditions
11.Do not use this appliance to cook food or burn paper or other
objects.
12.Do not use this appliance if any part has been exposed to or under
water. Immediately call a qualified service technician to inspect
the room appliance and to replace any part of the control system
and any gas control which has been under water.
13.Do not operate appliance if any log is broken.
14.Turn appliance off and let cool before servicing, installing or
repairing. Only a qualified service person should install, service
or repair appliance.
15.This appliances must not be connected to any external electrical
source.
16.Operating appliance above elevations of 4,500 feet may cause
pilot outage.
17.To prevent performance problems, do not use propane/LP fuel
tank of less than 100 lb. capacity (propane/LP units only).
18.Provide adequate clearances around air openings.
19.Do not operate appliance if any log is broken.
If used with MFEB accessory ember burner, this ap-
pliance shall only be installed in a wood burning
appliance.
WARNING: This appliance shall not be installed in a
room or space unless the required volume of indoor
combustion air is proved by the method described in
the National Fuel Gas Code, ANSI Z223.1/NFPA 54,
the International Fuel Gas Code.
Any part removed for servicing the appliance must be
replaced prior to operating the appliance.
When installing as a vented appliance in a manufac-
tured home or mobile home, the installation must
conform with the Manufactured Home Construction
and Safety Standard, Title 24 CFR, Part 3280 or when
standard is not applicable, with Manufacture Home In-
stallations Standard, ANSI/NCSBCS A225.1/NFPZ 501A.

Comfortflame.US.com 900570-00_NC4
PRODUCT IDENTIFICATION
Figure 1 - Product Identification
Control
Knob
Flame Adjustment Knob
MFBOD/Sequoia Model Series
LOCAL CODES
Install and use appliance with care. Follow all local codes. In the
absence of local codes, use the latest edition of The National Fuel
Gas Code, ANSI Z223.1/NFPA 54* or CSA B149.1..
*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
State of Massachusetts: The installation must be made by
a licensed plumber or gas fitter in the Commonwealth of
Massachusetts.
Sellers of unvented propane or natural gas-fired supplemental room
appliances shall provide to each purchaser a copy of 527 CMR 30
upon sale of the unit.
Vent-free gas products are prohibited for bedroom and bathroom
installation in the Commonwealth of Massachusetts.
COMMONWEALTH OF MASSACHUSETTS REQUIREMENTS
These appliances are approved for installation in the US state of
Massachusetts if the following additional requirements are met:
• Install this appliance in accordance with Massachusetts Rules
and Regulations 248 C.M.R. Sections 4.00 through 8.00.
• Installation and repair must be done by a plumber or gas fitter
licensed in the Commonwealth of Massachusetts.
• The flexible gas line connector used shall not exceed 36 inches
(92 centimeters) in length.
• The individual manual shut-off must be a T-handle type valve.
OPTIONAL REMOTE CONTROL ACCESSORIES
There are optional remote controls that can be purchased separately
for Remote-Ready Models Only:
• wallswitch
• hand-heldON/OFFremote
See Accessories, page 25.
UNPACKING
CAUTION: Do not remove the data plates from the
grate assembly. The data plates contain important
warranty and safety information.
1. Remove logs and appliance base assembly from carton(s).
2. Remove all protective packaging applied to logs and appliance
for shipment.
3. Check appliance for any shipping damage. If appliance is damaged,
promptly inform dealer where you bought appliance.
PRODUCT FEATURES
OPERATION
This appliance is dual listed as a vented decorative gas appliance to
ANSI Z21.60 for use indoors in wood burning appliances and as an
outdoor decorative gas appliance to ANSI Z21.97. When operated as
an outdoor decorative gas appliance, it must be installed outdoors in
a site built wood burning fireplace or a UL 127 listed wood burning
fireplace designed for outdoor use or in an unvented outdoor fireplace.
If optional accessory MFEB is used, the fireplace in which the appli-
ance is installed must have a working vent/flue as described within
these instructions.
ELECTRONIC IGNITION SYSTEM
This appliance has an electronic ignitor to light appliance fuel supply.
WARNING: DO NOT INSTALL IN SLEEPING ROOM
OF MOBILE HOMES.

Comfortflame.US.com900570-00_NC 5
INSTALLATION
WARNING: A qualified service person must install
appliance. Follow all local codes.
NOTICE: State or local codes may only allow operation
of this appliance in a vented configuration. Check your
state or local codes.
WARNING: Make sure the selector switch is in the
OFF position before installing appliance.
WARNING: Never install the appliance
•inarecreationalvehicle
• where curtains, furniture, clothing or other flammable
objects are less than 36" from front, 42" from top of
appliance;forsideclearancesseeFigure2,page5
•inhightrafcareas
•inwindyordraftyareas
OUTDOOR ENCLOSURE REQUIREMENTS
This appliance is considered to be installed outdoors if installed with
shelter no more inclusive than:
1. Withwallsonallsides,butwithnooverheadcover;
2. Within a partial enclosure which includes an overhead cover and
no more than two side walls. These side walls may be parallel,
asinabreezewayoratrightanglestoeachside;or
3. Within a partial enclosure which includes an overhead cover
andthreesidewalls;aslongas30%ormoreofthehorizontal
periphery of the enclosure is permanently open.
This appliance must be installed in an approved fireplace. When
installed indoors or either indoors or outdoors with optional ember
burner MFEB, the appliance must be installed in a wood burning
fireplace with the flue damper in the open position. This appliance
may only be installed in a fireplace with no flue when installed in an
approved outdoor fireplace. When installed in an outdoor fireplace
with no flue, optional ember burner MFEB may not be used.
CHECK GAS TYPE
Use the correct type of gas (natural or propane/LP). If your gas supply
is not the correct gas type, do not install appliance. Call dealer where
you bought appliance for proper type appliance.
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.
INSTALLATION AND CLEARANCES
WARNING: Maintain the minimum clearances. If
you can, provide greater clearances from floor, ceiling
and adjoining wall.
MINIMUM FIREPLACE CLEARANCE TO COMBUSTIBLE
MATERIALS
Side Wall 16", Ceiling 42"
Floor 5", Front: 36"
Carefully follow the instructions below. This will ensure safe installa-
tion into a masonry, UL127-listed manufactured appliance or listed
outdoor firebox.
Minimum Clearances For Side Combustible Material,
Side Wall and Ceiling
A. Clearances from the side of the fireplace cabinet to any combus-
tible material and wall should follow diagram in Figure 2.
Example: The face of a mantel, bookshelf, etc. is made of combus-
tible material and protrudes 3½" from the wall. This combustible
material must be 4" from the side of the appliance cabinet (see
Figure 2).
Note: When installing your gas logs into a manufactured firebox,
followreboxmanufacturer’sinstructionsforminimumclearances
to combustible materials.
B. Clearances from the top of the appliance opening to the ceiling
should not be less than 42".
Figure 2 - Minimum Clearance for Combustible to Wall
*Minimum 16" from Side Wall
*
Example
LOG SIZING REQUIREMENTS*
Log
Size
Minimum Firebox Size
Height Depth Front
Width
Rear
Width
MFBOD24NM/PM 29" 15.5" 39" 26.75"
MFBOD30NM/PM 29'' 20'' 47'' 33''
Sequoia24 29'' 15.5'' 39'' 26.75''
Sequoia30 29'' 20'' 47'' 33''
* When optional MFEB (EMBER BURNER KIT) is used with these burner
systems, the minimum firebox sizes are different. See MFEB instructions
for minimum firebox sizes if this accessory is used.

Comfortflame.US.com 900570-00_NC6
INSTALLATION Continued
Minimum Noncombustible Material Clearances
If Not Using Mantel
Note: If using a mantel proceed to If Using Mantel. If not using a
mantel, follow these instructions.
You must have noncombustible material(s) above the 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 behind it. Noncombustible material must extend at least 8"
up (for all models). If noncombustible material is less than 12", you
must install the fireplace hood accessory. See Figure 3 for minimum
clearances.
Heat Resistant
Material
(A)
Figure 3 - Heat Resistant Material (Slate, Marble, Tile, etc.)
Above fireplace
Noncombustible
Material Distance (A)
Requirements for Safe Installation
1 2" or more Noncombustible material OK.
Between 8" and 12" Install fireplace hood accessory (GA6050
see Accessories, page 25).
Less than 8" Noncombustible material must be extend-
ed to at least 8". See Between 8" and 12",
above. If you cannot extend material, you
must operate fireplace with flue damper
open.
If Using Mantel
You must have noncombustible material(s) above the fireplace open-
ing. Noncombustible materials (such as slate, marble, tile, etc.) must
be at least 1/2" thick. With sheet metal, you must have noncombustible
material behind it. Noncombustible material must extend at least 8"
up (for all models). If noncombustible material is less than 12", you
must install the appliance hood accessory. Even if noncombustible
material is more than 12", you may need the hood accessory to deflect
heat away from your mantel shelf. See Figure 3 and Figures 4 and 5,
page 6, for minimum clearances.
IMPORTANT: If you cannot meet these minimum clearances, you must
operate appliance with chimney flue damper open. Go to Installing
Damper Clamp Accessory for Vented Operation, page 7.
MANTEL CLEARANCES
In addition to meeting noncombustible material clearances, you
must also meet required clearances between fireplace opening and
mantel shelf. If you do not meet the clearances 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 4).
Figure 4 - Minimum Mantel Clearances Without Using Hood
Figure 5 - Minimum Mantel Clearances When Using Hood
Minimum Non-
Combustible
Material
Minimum Non-
Combustible
Material Height
Distances to
Underside of
Mantel
Top of Fireplace
Opening
Underside of
Mantel Shelf
12"
(A)
18" 20" 22" 24"
All minimum
distances are
in inches
2
1/2
"
6"
8"
10"
Mantel Shelf
Minimum
Noncombustible
Material 8"
Min.
12" 15" 18" 20"
2
1/2
"
6"
8"
10"
12"
Distances to
Underside of
Mantel
Hood (GA6050)
Top of
Fireplace
Opening
Underside
of Mantel
Shelf
Mantel Shelf
Determining Minimum Mantel Clearance When Using a Hood
If minimum clearances in Figure 4, are not met, you must have a
hood. When using a hood there are still certain minimum mantel
clearances required. Follow minimum clearances shown in Figure
5, when using hood.

Comfortflame.US.com900570-00_NC 7
INSTALLATION Continued
NOTICE: Surface temperatures of adjacent walls and
mantels become hot during operation. Walls and man-
tels above the firebox may become hot to the touch.
If installed properly, these temperatures meet the
requirement of the national product standard. Follow
all minimum clearances shown in this manual.
NOTICE: If yourinstallation doesnot meet the minimum
clearances shown, you must do one of the following:
•operatethelogsonlywiththeuedamperopen
•raisethemanteltoanacceptableheight
•removethemantel
FLOOR CLEARANCES
A. If installing appliance on the floor level, you must maintain the
minimum distance of 14" to combustibles (see Figure 6).
B. If combustible materials are less than 14" to the fireplace, you
must install appliance at least 5" above the combustible flooring
(see Figure 7).
14"
Min.
Combustible
Material
Noncombustible Material
Figure 6 - Minimum Fireplace Clearances If Installed at Floor
Level
Hearth
5"
Min.
Combustible
Material
Figure 7 - Minimum Fireplace Clearances Above Combustible
Flooring
INSTALLINGDAMPERCLAMP ACCESSORYFORVENTED OPERATION
Note: When used as a vented indoor appliance, appliance must be
installed only in a solid-fuel burning fireplace with a working flue and
constructed of noncombustible material.
For Massachusetts Residents Only: Installation of this gas log set
as a vented indoor appliance in the Commonwealth of Massachusetts
requires the damper be permanently removed or welded in the fully
open position.
You must install the damper clamp accessory (to order, see Acces-
sories, page 25). This will insure vented operation (see Figure 8).
The damper clamp will keep damper open. Installation instructions
are included with clamp accessory.
See chart below for minimum permanent flue opening you must pro-
vide. Attach damper clamp so the minimum permanent flue opening
will be maintained at all times.
Area of Various Standard Round Flues
Diameter Minimum Required Area
5" 20 sq. inches
6" 29 sq. inches
7" 39 sq. inches
8" 51 sq. inches
Figure 8 - Attaching Damper Clamp
Damper
Damper
Clamp
Damper
Damper
Clamp
Damper
Manufactured Appliance
Masonry Appliance
Chimney Height Minimum Permanent Flue Opening
6' to 15' 39 sq. inches
15' to 30' 29 sq. inches
WARNING: DO NOT INSTALL IN SLEEPING ROOM OF
MOBILE HOMES.

Comfortflame.US.com 900570-00_NC8
INSTALLING APPLIANCE BASE ASSEMBLY
WARNING: You must secure this appliance to fire-
place floor. If not, appliance will move when you adjust
controls. Moving appliance may cause a gas leak.
WARNING: If installing in a sunken fireplace, special
care is needed. You must raise the appliance floor to
allow access to appliance control panel. This will insure
adequate air flow and guard against sooting and controls
being damaged. Raise fireplace floor with noncombus-
tible material. Make sure material is secure.
Installation Items Needed
• hardwarepackage(providedwithappliance)
• approvedexiblegashoseandttingsprovided(ifallowedby
local codes)
• sealant(resistanttopropane/LPgas,notprovided)
• electricdrillwith3/16”masonrydrillbit
Note: Install optional MRC Series receiver and hand-held remote
control kit (see Accessories, page 25) before installing gas log ap-
pliance. See installation instructions included with the kit.
1. Apply pipe joint sealant lightly to male threads of the 1/2 NPT
side of gas fitting elbow (provided) and connect to inlet side of
gas control. Remove gas fitting from flexible gas hose (provided)
before connecting to elbow (see Figure 9).
2. Position appliance base assembly in fireplace.
3. Mark screw locations through holes in front panel of base (see
Figure 10, page 8). If installing in a brick-bottom fireplace, mark
screw locations in mortar joint of bricks.
4. Remove appliance base from fireplace.
5. Drill holes at marked locations using 3/16" drill bit.
6. Attach base, through holes in back side panels of base, to fireplace
floor using masonry screws provided in hardware package (see
Figure 10, page 8).
7. Connect to gas supply. See Connecting To Gas Supply.
CONNECTING TO GAS SUPPLY
WARNING: This appliance requires a 1/2" NPT
(National Pipe Thread) inlet connection to the pres-
sure regulator.
WARNING: A qualified service person must con-
nect appliance to gas supply. Follow all local codes.
CAUTION: Never connect propane/LP fireplace
directly to the propane/LP supply. This appliance
requires an external regulator (not supplied). Install
the external regulator between the appliance and
propane/LP supply.
WARNING: Never connect natural gas fireplace
to private (non-utility) gas wells. This gas is com-
monly known as wellhead gas.
Installation Items Needed
Before installing appliance, make sure you have the items listed below.
• externalregulator(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
• approvedexiblegaslinewithgasconnector(ifallowedbylocal
codes) (not provided)
* An equipment shutoff valve with 1/8" NPT tap is an acceptable al-
ternative to test gauge connection. Purchase the optional equipment
shutoff valve from your dealer.
For propane/LP units, the installer must supply an external regulator.
Figure 9 - Attaching Flexible Gas Hose to Appliance Gas
Regulator
Gas Control
Flexible Gas Hose
(Provided with MFBOD
Series Models Only)
(Install if allowed by
local codes)
Elbow, 1/2 NPT x
3/8 Flare
Figure 10 - Attaching Base to Fireplace Floor (Model Shown May
Vary from Actual Model)
Masonry Screw
INSTALLATION Continued

Comfortflame.US.com900570-00_NC 9
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 reduce incoming gas pressure, appliance regulator damage
could occur. Install external regulator with the vent pointing down as
shown in Figure 11. Pointing the vent down protects it from freezing
rain or sleet.
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 appliance. If pipe is too small, undue loss
of volume will occur.
Installation must include an equipment shutoff valve, union and
plugged 1/8" NPT tap. Locate NPT tap within reach for test gauge
hook up. NPT tap must be upstream from appliance (see Figure 12).
IMPORTANT: Install equipment shutoff valve in an accessible loca-
tion. 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 appliances.
Apply pipe joint sealant lightly to male NPT threads. This will prevent
excess sealant from going into pipe. Excess sealant in pipe could
result in clogged appliance valves.
WARNING: Use pipe joint sealant that is resistant
to liquid petroleum (LP) gas.
Figure 11 - External Regulator With Vent Pointing Down
Propane/LP
Supply Tank
External
Regulator
with Vent
Pointing
Down
We recommend that you install a sediment trap in supply line as
shown in Figure 12. Locate sediment trap where it is within reach for
cleaning. Install in piping system between fuel supply and appliance.
Locate sediment trap where trapped matter is not likely to freeze. A
sediment trap traps moisture and contaminants. This keeps them
from going into appliance controls. If sediment trap is not installed
or is installed wrong, appliance may not run properly.
CAUTION: Avoid damage to gas control. Hold gas
control with wrench when connecting it to gas piping
and/or fittings.
CHECKING GAS CONNECTIONS
WARNING: Test all gas piping and connections,
internal and external to unit, for leaks after installing
or servicing. Correct all leaks at once.
WARNING: Never use an open flame to check for
a leak. Apply a noncorrosive leak detection fluid to
all joints. Bubbles forming show a leak. Correct all
leaks at once.
CAUTION: Make sure external regulator has been
installed between propane/LP supply and appliance.
SeeguidelinesunderConnectingtoGasSupply,page 8.
* Purchase the optional equipment shutoff valve from your dealer.
**Minimum inlet gas supply pressure for purpose of input adjust-
ment.
Figure 12 - Gas Connection
Pipe Cap Tee
Nipple Joint
Gas Control
3" Minimum
Sediment Trap
Equipment Shutoff Valve
With 1/8" NPT Tap*
Approved Flexible
Gas Hose (if allowed
by local codes)
PROPANE/LP
From External
Regulator
(11" W.C.**
to 14" W.C.
Pressure)
NATURAL
From Gas
Meter
(5" W.C.**
to 10.5"
W.C.
Pressure)
INSTALLATION Continued

Comfortflame.US.com 900570-00_NC10
INSTALLATION Continued
PRESSURE TESTING GAS SUPPLY PIPING SYSTEM
Test Pressures In Excess Of 1/2 PSIG (3.5 kPa)
The appliance and its appliance main gas valve must be disconnected
from the gas supply piping system during any pressure testing of that
system at test pressures in excess of 1/2 psig (3.5 kPa).
1. Disconnect appliance with its appliance main gas valve (control
valve) and equipment shutoff valve from gas supply piping system.
Pressures in excess of 1/2 psig will damage appliance regulator.
2. Cap off open end of gas pipe where equipment shutoff valve was
connected.
3. Pressurize supply piping system by either opening propane/LP
supply tank valve for propane/LP gas or opening main gas valve
located on or near gas meter for natural gas or using compressed
air.
4. Check all joints of gas supply piping system. Apply noncorrosive
leak detection fluid to all joints. Bubbles forming show a leak.
5. Correct all leaks at once.
6. Reconnect appliance 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)
The appliance must be isolated from the gas supply piping system
by closing its equipment shutoff valve during any pressure testing of
the gas supply piping system at test pressures equal to or less than
1/2 psig (3.5 kPa).
1. Close equipment shutoff valve (see Figure 13).
2. Pressurize supply piping system by either opening propane/LP
supply tank valve for propane/LP gas or opening main gas valve
located on or near gas meter for natural gas or using compressed
air.
3. Check all joints from gas meter to equipment shutoff valve for
natural gas or propane/LP supply to equipment shutoff valve for
propane/LP (see Figure 14 or Figure 15). Apply noncorrosive leak
detection fluid to all joints. Bubbles forming show a leak.
4. Correct all leaks at once.
Figure 13 - Equipment Shutoff Valve
Figure 14- Checking Gas Joints (Propane/LP Only)
Control Valve
Location
Propane/LP
Supply Tank Equipment
Shutoff Valve
Open
Closed
Equipment
Shutoff
Valve
Figure 15 - Checking Gas Joints (Natural Gas Only)
Gas Meter
Control Valve
Location
Equipment Shutoff Valve
PRESSURE TESTING APPLIANCE GAS CONNECTIONS
1. Open equipment shutoff valve (see Figure 13).
2. Open main gas valve located on or near gas meter for natural gas
or open propane/LP supply tank valve.
3. Make sure control knob of appliance is in the OFF position.
4. Check all joints from gas meter to equipment shutoff valve for
natural gas or propane/LP supply to equipment shutoff valve for
propane/LP (see Figure 14, or Figure 15). Apply noncorrosive leak
detection fluid to all joints. Bubbles forming show a leak.
5. Correct all leaks at once.
6. Light appliance (see Operation, page 16). Check all other internal
joints for leaks.
7. Turn off appliance (see To Turn Off Gas to Appliance, page 16 for
Remote Ready models).
INSTALLING SWITCH
The AUTO/OFF/ON switch for this log set is installed into the small
single log accompanying this log set. This switch needs to be used
only if remote or wall switch is not being used.
Connect the wires to the valve from the switch assembly as shown
in Figure 16, page 11.

Comfortflame.US.com900570-00_NC 11
INSTALLATION Continued
Figure 16 - Connecting Wires
Control Valve
To AUTO
Terminal
on Switch
To OFF Terminal
on Switch
INSTALLING OPTIONAL REMOTE ACCESSORIES
Installing Remote Receiver
Remote control accessories are available separately (see Accessories,
page 25). Read instructions shipped with remote control along with
instructions below before attempting installation.
1. If unit is already installed in appliance, continue with these instruc-
tions. If unit has not been installed in appliance, go to step 6 and
continue installation of remote accessory.
WARNING: Turn off appliance and let cool before
handling any part of appliance. Make sure gas is
turned of to unit.
2. Carefully remove logs and set aside.
3. Locate mounting screws on sides of appliance base assembly
and remove screws. Set screws aside for reinstallation.
4. Disconnect gas line from appliance base as shown in Figure 9,
page 8.
WARNING: A qualified service person mustconnect
anddisconnectgas to appliance.Followalllocalcodes.
5. Remove appliance base from fireplace.
6. If installed, disconnect AUTO/OFF/ON switch wire from control
valve at TPTH and TH locations (see Figure 17).
7. Connect wires from hardware pack (with remote receiver bracket)
to control valve at the TPTH and TH locations as shown in Figure 17.
Connect other ends of these wires to remote receiver wires.
Note: Make sure excess wire does not interfere with burner or
pilot.
8. If appliance was removed from fireplace before installation of
remote accessory, see Installing Appliance Base Assembly on page
8 to reinstall appliance into fireplace . Test gas connection for leaks
(see Checking Gas Connections, page 9).
9. If logs were removed from appliance for install remote accessory,
replace logs (see Installing Logs, and Lava Rock).
10. Place remote receiver on fireplace floor next to control valve. Make
sure the remote receiver and wires are not on or touching either
gas burner on the log set.
Installing Batteries for Remote Receiver and Hand Held Remote
Control
Follow instructions accompanying remote control accessory to install
batteries.
Note: Only use alkaline batteries.
Figure 17- Disconnecting Switch from Control Valve
Switch
Control
Valve
INSTALLING LOGS AND LAVA ROCK
WARNING: Failure to position the parts in ac-
cordance with these diagrams or failure to use
only parts specificallyapproved withthis appliance
may result in property damage or personal injury.
CAUTION: After installation and periodically
thereafter, check to ensure that no flame comes
in contact with any log. With appliance set to
Hi, check to see if flames contact any log. If so,
reposition logs according to log installation in-
structions in this manual. Flames contacting logs
will create soot.
LOG PLACEMENT
It is very important to install these logs exactly as instructed. Do not
modify logs. Only use logs supplied with appliance.
Note: Each log includes an identifying number cast in the log. Look
at each log when placing them on the burner system to be certain
it is correct.
Note: For additional information, go to Comfortflame.US.com and click
on the technical Support tab for access to log placement videos.
1. Find the right front log (Sequoia24 inch models: D-061 or Se-
quoia30 inch models: D-019). See Figures 18, 18A, 18B, and
18C, page 12 for reference. The log has a rectangular shape on
the bottom that fits against the lip on the black metal base, the
square grate, and the round tube burner. Slide the log in place
as shown in Figures.

Comfortflame.US.com 900570-00_NC12
2. Find the back left log (Sequoia24 inch models: D-060 or Sequoia30
inch models: D-018). See Figures 19, 19A, and 19B. Figure 19A
shows how the log must fit against the end of the burner. Figure
19B shows how the notch in log fits against the vertical portion of
the burner tube. Place this log on the base assembly by inserting
it from the left side as shown in Figure 19. You will need to twist
the log slightly to get it to fit against the burners properly. It will
rest even with the back edge of the pan.
Figure 18 - Installing Right Front Log
Figure 18A - Installing Right Front Log, Top View
Burner
Tube
Grate Finger
Round Tube
Burner
Grate Finger
Right Front Log
(D-061, D-019)
Figure 19A - Installing Back Left Log
Figure 18B - Installing Right Front Log, Top View
Figure 18C - Installing Right Front Log, Side View
Burner Tube Square Grate
Burner Tube
Log Notch
Figure 19 - Installing Back Left Log
Back Left Log
(D-060, D-018) Flat Part of Log
Log Notch Burner Tube
INSTALLATION Continued

Comfortflame.US.com900570-00_NC 13
Figure 19B - Installing Back Left Log (D-018) Rear View
Vertical Portion of Burner Tube
Figure 20 - Installing Front Left Log
Front Left Log
(D-059, D-017)
Grate Fingers
3. Find the front left log (Sequoia24 inch models: D-059 or Sequoia30
inch models: D-017). See Figures 20, 20A, and 20B. The log has
a rectangular stand off on the bottom that fits against the lip on
the black metal base as shown in figure 20A, page 13. The bottom
of this log has a slot that fits over the second bar on the grate
as shown in Figure 20B. Place the log on the base assembly as
shown in figures.
4. Find the charred log (D-020). See Figures 21, 21A, and 21B. The
log has a slot in the bottom that fits over the square grate and
rests against the burner tube as shown in Figure 21. Place this
log on the base as shown in figures.
Figure 20A - Installing Front Left Log Side View
Figure 20B - Installing Front Left Log
Grate Finger Log Slot
Charred Log
Log Notch
Right Front Log
Figure 21 - Installing Charred Log
Figure 21A - Installing Charred Log Top View
INSTALLATION Continued

Comfortflame.US.com 900570-00_NC14
Figure 21B - Installing Charred Log Top Side View
Figure 22 - Installing Middle Split Log (D-021)
Middle Split Log
(D-063, D-021)
Square Peg
Square Grate Log Notch
5. Find the middle split log (Sequoia24 inch models: D-063 or Se-
quoia30 inch models: D-021). See Figures 22 and 22A. The split
side of the log faces forward. The log has a notch that fits around
the burner tube on the right side. The left side of the burner tube
fits into the notch on the back side of this log. The log is placed
properly when it sits parallel to the tube burner and the square
peg is pointing up. See figures for reference.
Figure 22A - Installing Middle Split Log Rear Top Side View
Log NotchBurner Tube
INSTALLATION Continued
6. Find the right split crossover log (D-022) The bottom of the log
has a rectangular stand off that fits in the slots on the right side
of the front right log and the middle split log. Place this log as
shown in Figure 23.
Figure 24 - Installing Front Top Log
Front Top Log
(D-024) Rectangular Peg
Right Split
Crossover
Log (D-022)
Middle Split Log
Figure 23 - Installing Right Split Crossover Log
Right Split Crossover
Log (D-022)
Right Front Log
Square Peg
7. Find the front top log (D-024). See Figure 24. The left end of this
log has a square hole that fits over a square peg that is on the
top of the middle split log. The right end of this log rests behind
the knot on the top of the front right log.
8. Find the back top log (Sequoia24 inch models: D-062 or Se-
quoia30 inch models: D-023). See Figures 25, and 25A. The left
end of this log has a round hole that fits over the round peg that
is on the top of the back left log. The right end of this log has a
rectangular hole that fits over the rectangular peg on the top of
the right crossover log.

Comfortflame.US.com900570-00_NC 15
INSTALLATION Continued
Figure 25 - Installing Back Top Log and Final Assembly
Figure 25A - Installing Back Top Log, Top View
Right Split
Crossover
Log (D-022)
Back Top Log
(D-062, D-023)
LAVA ROCK PLACEMENT
Place lava rock around the base of the burner assembly on the
fireplace floor to simulate an ash bed. Do not place lava rock or any
other material on the burner.

Comfortflame.US.com 900570-00_NC16
Note: If pilot goes out, repeat steps 4 through 8.
9. Slightly push in and turn control knob counterclockwise to
the ON position.
10.Wait one minute and move switch to the ON position to light
burner.
Note: AUTO is only functional when using optional remote control
accessory.
11. Set flame adjustment knob to any level between HI and LO
TO TURN OFF GAS
TO APPLIANCE
1. Turn control knob clockwise to the OFF position.
2a. Set 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 Figure 13, page 10).
MANUAL LIGHTING
PROCEDURE
1. Follow steps 1 through 6 under Lighting Instructions.
2. Press 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 steps 9
through 11, under Lighting Instructions.
OPTIONAL HAND-HELD
REMOTE OPERATION
Note: All remote control accessories must be purchased separately
(see Accessories, page 25). Follow instructions included with the
remote control.
NOTICE: You must light the pilot before using the hand-
held remote control unit. See Lighting Instructions.
After lighting, let pilot flame burn for about one minute. Turn control
knob to ON position. Adjust flame adjustment knob anywhere between
HI and LO. Slide the selector switch to the REMOTE position (see
Figure 26).
Note: The burner may light if hand-held remote was on when selector
switch was last turned off. You can now turn burner on and off with
hand-held remote control unit.
IMPORTANT: Do not leave selector switch in the REMOTE or ON
position when pilot is not lit. This will drain the battery.
Figure 26 - Control Knob, Ignitor Button and Remote Selector
Switch
Selector
Switch
Control
Knob in OFF
Position
Flame
Adjustment
Knob
Ignitor
OPERATION
FOR YOUR SAFETY
READ BEFORE LIGHTING
WARNING: If you do not follow these instructions
exactly, a fire or explosion may result causing property
damage, personal injury or loss of life.
A. This appliance has a pilot which must be lighted with a piezo
ignitor. When lightning 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redepartment.
C. Use only your hand to push in or turn gas control knob. Never
use tools. If the knob will not push in or turn by hand, do not
try to repair it, call a qualified technician. Force or attempted
repair may result in a fire.
D. Do not use this appliance if any part has been under water. Imme-
diately 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
INSTRUCTIONS
1. STOP! Read the safety information, above.
2. Make sure switch is in the OFF position.
3. Be sure gas line shut-off valve is OPEN.
4. Press in and turn control knob clockwise to the OFF
position (see Figure 26).
Note: Knob cannot be turned from PILOT to OFF unless knob is
pushed in slightly. DO NOT FORCE.
5. Wait five (5) minutes to clear out any gas. If you then smell gas,
STOP! Follow "B" in the safety information in column 1. If you
don't smell gas, go on the next step.
6. Press in and turn control knob counterclockwise to the
PILOT position. Press in control knob for five (5) seconds (see
Figure 26).
7. With control knob pressed in, press and release ignitor button.
This will light pilot. 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.
8. Keep control knob pressed in for 30 seconds after lighting pilot.
After 30 seconds, release control knob.
•Ifcontrolknobdoesnotpopoutwhenreleased,turnoffgas
supply and contact a qualified service person or gas supplier
for repairs.

Comfortflame.US.com900570-00_NC 17
INSPECTING BURNERS
BURNER FLAME PATTERN
Figure 28 shows correct burner flame pattern.
NOTICE: Do not mistake orange flames with yellow
tipping. Dirt or other fine particles are burned by ap-
pliance, causing brief patches of orange flame.
If burner flame pattern is incorrect, as shown in Figure 29.
• turnapplianceoff(seeTo Turn Off Gas to Appliance, page 16)
• seeTroubleshooting, page 20
Figure 27 - Pilot Assembly
Thermocouple
Thermopile
1/8"
Pilot Burner
Piezo
Ignitor
3/8" to 1/2"
Figure 28 - Correct Burner Flame Pattern
Yellow Flames with
Orange Streaks
Figure 29 - Incorrect Burner Flame Pattern
Dark Orange
Flames
Check pilot flame pattern and burner flame patterns often.
PILOT ASSEMBLY
The pilot assembly is factory preset for the proper flame height.
Alterations may have occurred during shipping and handling. Call a
qualified service person to readjust the pilot if necessary.
The height of the thermopile must be 3/8" to 1/2" above the pilot
flame as shown in Figure 27. The thermocouple must be at a height
of about 1/8" above the pilot flame. The flame from the pilot burner
must extend beyond both the thermocouple and thermopile.
If your pilot assembly does not meet these requirements:
• turnapplianceoff(seeTo Turn Off Gas to Appliance, page 16)
• seeTroubleshooting, page 20

Comfortflame.US.com 900570-00_NC18
CLEANING AND MAINTENANCE
WARNING: Turn off appliance and let cool before
cleaning.
CAUTION: You must keep control areas, burners
and circulating air passageways of appliance clean.
Inspect these areas of appliance before each use.
Have appliance inspected yearly by a qualified service
person.
WARNING: Failure to keep the primary air
opening(s) of the burner(s) clean may result in sooting
and property damage.
BURNER INJECTOR HOLDER AND PILOT AIR INLET HOLE
The primary air inlet holes allow the proper amount of air to mix with
the gas. This provides a clean burning flame. Keep these holes clear
of dust, dirt, lint and pet hair. Clean these air inlet holes prior to each
heating season. Blocked air holes will create soot. We recommend
that you clean the unit every three months during operation and have
appliance inspected yearly by a qualified service person.
We also recommend that you keep the burner tube and pilot assembly
clean and free of dust and dirt. To clean these parts we recommend
using compressed air no greater than 30 PSI. Your local computer
store, hardware store or home center may carry compressed air in a
can. If using compressed air in a can, please follow the directions on
thecan.Ifyoudon’tfollowdirectionsonthecan,youcoulddamage
the pilot assembly.
1. Shut off unit, including pilot. Allow unit to cool for at least thirty
minutes.
2. Inspect burner, pilot and primary air inlet holes on injector holder
for dust and dirt (see Figure 30).
3. Blow air through the ports/slots and holes in the burner.
4. Check injector holder located at end of burner tube again. Remove
any large particles of dust, dirt, lint or pet hair with a soft cloth or
vacuum cleaner nozzle.
5. Blow air into the primary air holes on the injector holder.
6. In case any large clumps of dust have now been pushed into the
burner repeat steps 3 and 4.
Clean pilot assembly also. Additional cleaning may be needed for
proper pilot operation based on use/lack of use. A yellow tip on the
pilot flame may indicate dust and dirt in the pilot assembly. There is
a small pilot air inlet hole about from where the pilot flame comes
out of pilot assembly (see Figure 31). With unit off, lightly blow air
through air inlet hole. You may blow through a drinking straw if
compressed air is not available.
LOGS
• Ifyouremovelogsforcleaning,refertoInstalling Logs and Lava
Rock, page 11, to properly replace logs.
• Replacelog(s)ifbrokenorchipped(dime-sizedorlarger).
MAIN BURNER
Periodically inspect all burner flame holes with appliance running. All
slotted burner flame holes should be open with flame present. 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, turn off appliance and let cool. Remove blockage, blocked
burner flame holes will create soot.
WARNING: The injector holders (air shutters) are
not adjustable. Do not move injector holders from
their original positions.
At least once a year, the vent system for the fireplace
in which this appliance is installed shall be inspected,
cleaned, and repaired as necessary by a qualified
service person.
Figure 30 - Injector Holder On Outlet Burner Tube
Burner Tube
Injector Holder
Primary Air
Inlet Holes
Figure 31 - Pilot Inlet Air Hole
(Your pilot may vary from pilot shown)
Thermocouple
Thermopile
1/8"
Pilot Burner
Piezo
Ignitor
3/8" to 1/2"

Comfortflame.US.com900570-00_NC 19
SPECIFICATIONS
MFBOD24PM and MFBOD30PM
• Rating(Variable):29,000/40,000Btu/Hr
• TypeGas:Propane/LP
• Ignition:Electronic
• ManifoldPressure:7.9"W.C.
• InletGasPressure(in.ofwater):
Max - 14" W.C., Min* - 11" W.C.
*For purpose of input adjustment
MFBOD24NM and MFBOD30NM
• Rating(Variable):29,000/40,000Btu/Hr
• TypeGas:Natural
• Ignition:Electronic
• ManifoldPressure:3.4"W.C.
• InletGasPressure(in.ofwater):
Max - 10.5" W.C., Min* - 5" W.C.
*For purpose of input adjustment
To Thermopile
To AUTO Terminal on
Switch
To OFF Terminal on
Switch
WIRING DIAGRAM (REMOTE READY MODELS)

Comfortflame.US.com 900570-00_NC20
TROUBLESHOOTING
WARNING: Turn off appliance and let cool before servicing. Only a qualified service person should service
and repair appliance.
Note: All troubleshooting items are listed in order of operation.
POSSIBLE CAUSE
1. Ignitor electrode not connected to ignitor
cable
2. Ignitor cable pinched or wet
3. Broken ignitor cable
4. Bad ignitor
5. Ignitor electrode positioned wrong
6. Ignitor electrode broken
7. Battery not installed, battery power low or
battery not installed correctly (electronic
ignition models only)
1. Gas supply turned off or equipment 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 (propane/LP only)
6. ODS/pilot is clogged
7. Gas regulator setting is not correct
REMEDY
1. Reconnect ignitor cable
2. Free ignitor cable if pinched by any metal
or tubing. Keep ignitor cable dry
3. Replace ignitor cable
4. Replace ignitor
5. Replace pilot assembly
6. Replace pilot assembly
7. Install new alkaline battery in electronic
ignitor. Verify battery is installed cor-
rectly
1. Turn on gas supply or open equipment
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 Main-
tenance, page 18) or replace ODS/pilot
assembly
7. Replace gas regulator
OBSERVED PROBLEM
When ignitor button is pressed, there is no
spark at ODS/pilot
When ignitor button is pressed, there is
spark at ODS/pilot but no ignition