Monessen Hearth BBV400NV User manual

BBV400NV/BBV400NE SERIES
B-VENT DECORATIVE GAS APPLIANCE
INSTALLATION, OPERATION AND MAINTENANCE MANUAL
READ THIS MANUAL BEFORE INSTALLING OR OPERATING THIS APPLIANCE. THIS INSTALLATION, OPERATION AND MAINTENANCE
MANUAL MUST BE LEFT WITH APPLIANCE FOR FUTURE REFERENCE.
DANGER: FAILURE TO FOLLOW THESE INSTRUCTIONS CAREFULLY AND WITHOUT ERROR, OR FAILURE TO HEED ANY
AND ALL WARNINGS IN THESE INSTRUCTIONS CAN RESULT IN AN EXPLOSION, FIRE OR THE PRODUCTION OF CARBON
MONOXIDE GAS WHICH CAN CAUSE PROPERTY DAMAGE, BODILY INJURY OR DEATH.
DONOT STORE OR USE GASOLINE OR OTHER FLAMMABLE VAPORS AND LIQUIDS IN THE VICINITY OF THIS OR ANY OTHER
APPLIANCE.
WHATTODOIFYOUSMELLGAS
• DONOT TRY TO LIGHT ANY APPLIANCE.
• DONOT TOUCH ANY ELECTRICAL SWITCH; DO NOT USE ANY PHONE IN YOUR BUILDING.
• IMMEDIATELY CALL YOUR GAS SUPPLIER FROM ANEIGHBOR’SPHONE. FOLLOW THE GAS SUPPLIER’S
INSTRUCTIONS.
• IFYOU CANNOT REACH YOUR GAS SUPPLIER, CALL THE FIRE DEPARTMENT.
WARNING: IFTHE INFORMATION IN THIS MANUAL IS NOT FOLLOWED EXACTLY, AFIRE OR EXPLOSION MAY RESULT
CAUSING PROPERTY DAMAGE, PERSONAL INJURY OR LOSS OF LIFE.
INSTALLATION AND SERVICE MUST BE PERFORMED BY AQUALIFIED INSTALLER, SERVICE AGENCY OR THE GAS SUPPLIER.
53D9015. Rev. 1 03/03

2
ImportantInformation.......................................................................................................................2-4
ApplianceSystemComponents..................................................................................5
Clearances........................
...............................................................................................6
InstallationPreparation ...................................................................................................7-8
FireplaceandVentingInstallation..................................................................................................9
VentingRequirements ........................................................................................................10
GasSupplyConnections ...............................................................................................11
ElectricalWiring.....................................................................................................................................11
ElectronicIgnition........................................................................................................12
FireplaceSetup....................................................................................................................................13
OperatingInstructions.....................................................................................................................14-15
MaintenanceInstructions................................................................................................................15-16
OutsideCombustionAirPrecautionsandRecommendations.............................................................17
CombustionAirAssembly.....................................................................................................................18
Troubleshooting.....................................................................................................................................19
RepairPartsList...................................................................................................................................20
CONGRATULATIONS!
You have chosen thefinest B-vent gas fireplace system available. Your fireplace has been designed for
years of decorative viewing enjoyment. Please take time to read this entire manual before installing or
operating your system.
TABLE OF CONTENTS
LISTING AND CODE APPROVALS
U.S. and Canada Certification
The BBV400NV Series Gas Appliance has been tested in accordance with the ANSI Z21.50-
1998/CSAM2.22-M98 Standard for Vented Gas Fireplaces and have been LISTED by OMNI-
Test Laboratories, Inc. for installation and operation as described in these Installation and
Operating Instructions. All components are UL,AGA, CGA, or CSA safety certified.
Local Codes
Check with your local building code agency prior to installing this appliance to ensure
compliance with local codes, including the need for permits and follow-up inspections. This
installation must conform with local codes or, in the absence of local codes, in the USA with
the National Fuel Gas Code, ANSI Z223.1-latest edition.
53D9015. Rev 1 03/03

2
3
"Warning: If not installed, operated and maintained in accordance with the manufacturer’s
instructions, this product could expose you to substances in fuel or from fuel combustion which
can cause death or serious illness and which are known to the state of California to cause cancer,
birthdefects or other reproductive harm. Also, operation, installationand servicing of this product
could expose you to airborne particles of glass wool fibers known to the state of California to
cause cancer through inhalation."
The gas fireplace must be installed and serviced by a qualified installer to conform with local codes. In the
absence of local codes, install to the current National Fuel Gas Code, ANSI Z223.1.
The fireplace and its individual shutoff 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.
The fireplace must be isolated from the gas supply piping system by closing its individual manual shutoff valve
during any pressure testing of the gas supply piping system at test pressures equal to or less than 1/2 psig.
Pressures in excess of 1/2 psig will cause damage to the control valve and may cause damage to the shutoff
valve.
Model BBV400NV (Natural Gas):
Maximum Input: 18,000 BTU Per Hour
Minimum Inlet Gas Supply Pressure: 4.5 inches water column
Maximum Inlet Gas Supply Pressure: 7 inches water column
Manifold Pressure Under Flow Conditions: 3.5 inches water column
Notice: This appliance operates with a yellow, smoky flame. When properly adjusted according
to these instructions, small amounts of carbon (soot) will be deposited on the outlet section of
the air terminal and possibly on surrounding structure. If not properly adjusted and operated
according to these instructions, carbon (soot) will accumulate in larger quantities on the air
terminal and surrounding structure and objects.
Do not attempt to operate the burner at an input rate other than that given by the flame adjustment valve.
Illustrations throughout these instructions reflect typical installations and are for design purposes only. Actual
installation may vary slightly due to individual design preferences. However, minimum and maximum clearances
must be maintained at all times. The illustrations and diagrams in these instructions are not drawn to scale.
Any additions, changes or conversions required in order for the appliance to satisfactorily meet the application
needs must be made by a distributor or dealer using factory specified and approved parts.
This product is manufactured to use natural gas. Anatural gas unit can be converted to use propane, but ONLY
if converted by a qualified service technician and ONLY if the Natural Gas to Propane Gas Conversion Kit is
used.
If any assistance is required during installation, please contact your local dealer or the Customer Service
Department.
For Massachusetts Residences Only:
•This product must be installed by a licensed plumber or gas fitter when installed within the
Commonwealth of Massachusetts. Flexline installation must not exceed 36 inches.
IMPORTANT INFORMATION
53D9015. Rev 1 03/03

5
4
IMPORTANT INFORMATION
This fireplace is a decorative gas appliance.
Do not burn wood or other materials in this fireplace.
Adultsandespeciallyyoungchildren should be alerted to the hazards of high temperatures and should stay away
to avoid burns or clothing ignition.
Supervise young children when they are in the same room as the fireplace.
Due to high temperatures, the fireplace should be located out of traffic and away from furniture and draperies.
Clothing or other flammable material should not be placed on or near the fireplace.
The fireplace glass door must be in place when the appliance is operating.
Any safety screen or guard removed for servicing the appliance must be replaced prior to operating the fireplace.
It is imperative that the control compartments, burners and circulating air passageways of the fireplace and
venting system are kept clean.
The fireplace and its venting system should be inspected before use and at least annually by a qualified service
person.
More frequent cleaning may be required due to excessive lint from carpeting, bedding material, etc.
The fireplace area must be kept clear and free from combustible materials, gasoline and other flammable vapors
andliquids.
This fireplace must not be connected to a chimney flue servicing a separate solid fuel burning appliance.
Under no circumstances should the fireplace be modified.
The fireplace is not intended for use with a thermostat.
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 which has been under water.
Thisappliance must be installed with the draft hood in the same atmospheric pressure zone as the combustion air
inlet to the appliance.
53D9015. Rev 1 03/03

6
5
This gas appliance has been tested and listed for use with the optional components listed on this page. Many
optional components may be purchased separately and installed at a later date. However, installation of a blower
kitwill requireelectrical power. To avoidcostly reconstruction,electricalpower shouldbe connectedtothe appliance
at the time of initial appliance installation for possible addition of these accessories at a later date.
APPLIANCE SYSTEM COMPONENTS
A list of the components that may safely be used with this appliance are listed below.
BBV400NV Standing Pilot, Natural Gas†
BBV400NE Electronic Ignition, Natural Gas†
† Field convertible to propane gas.
GD36PB Polished Brass Glass Door††
GD36B Black Finish Glass Door††
†† Shownbelow.
CK35E LP Conversion Kit for Electronic Ignition Model
CK35L LP Conversion Kit for Standing Pilot Model
RC2 Hand Held Remote Control
GFWS Wall Switch
OAC4 Outside Air Kit
OPTIONAL
ACCESSORIES
MODELS
GLASS DOORS
Must be installed with one of the glass doors shown below.
GD36B
GD36B
GD36PB
GD36PB
RC2
HAND HELD REMOTE 
CONTROL
GFWS
REMOTE WALL SWITCH
OAC4 OUTSIDE
OAC4 OUTSIDE
AIR ASSEMBLY
AIR ASSEMBLY
53D9015. Rev 1 03/03

CLEARANCES TOCOMBUSTIBLE MATERIALS
6
Sides: 1/2 inch Back: 1/2 inch Bottom: 0 inch
Top: 0 to Top of Spacers Front: 24 inches Ceiling: 48 inches
Vent Pipe: As specified by vent manufacturer.
Notice: Spacers are provided on the top of the unit which allow the fireplace to be listed as a "0" clearance
appliance. A ˚" clearance to combustibles must be maintained from the flat surfaces of the sides and back of the
appliance.
When the fireplace is installed directly on carpeting, vinyl tile or other combustible material other than wood
flooring,the fireplaceshall be installedon a metalor woodpanelextending thefullwidth anddepthof theappliance.
Adequatecombustion and ventilation airmustbeprovided. Provide adequate accessibility clearance forservicing
and operating the fireplace. Never obstruct the front opening of the fireplace.
FIGURE 1
GAS LINE
GAS LINE
KNOCKOUT
KNOCKOUT
JUNCTION BOX
JUNCTION BOX
KNOCKOUT
KNOCKOUT
TOP VIEW
TOP VIEW
FRONT VIEW
FRONT VIEW
SIDE VIEW
SIDE VIEW
7 13/16"
15" 15 1/2" MIN.
15 1/2" MIN.
FRAMING DIM.
FRAMING DIM.
4 1/8"
1 7/8"
1 7/8"
33"19 5/8" 36 1/2"
3 1/2"
3 1/2"
6 1/8"
6 1/8"
5 1/2"
5 1/2"
38"
38"
36"
36"
39" MIN.
39" MIN.
FRAMING DIM.
FRAMING DIM.
36 1/2"
MIN.
MIN.
FRAMING
FRAMING
DIM.
DIM.
53D9015. Rev 1 03/03

This gas fireplace and its components are tested and safe when installed in accordance with this installation
manual. Reportyourdealeranypartsdamagedinshipment,particularly the condition of the glass. Do not install
any unit with damaged, incomplete, or substitute parts.
Read all of the instructions before starting the installation. Follow these instructions carefully during the
installation to ensure maximum safety and benefit. Failure to follow these instructions will void the owner’s
warranty and may present a fire hazard.
When planning a fireplace installation, it is necessary to determine:
• Where the unit is to be installed.
• The vent system configuration to be used.
• Gas supply piping requirements.
• Electrical wiring requirements.
•Framing and finishing details.
• Whether optional accessories - devices such as a fan, wall switch, or remote control - are desired.
HIGH ALTITUDE INSTALLATION
For U.S. installation, units are tested and approved for elevations from 0-2000 feet. When installing this unit at an
elevation above 2000 feet, United States codes require a decrease of the input rating by changing the existing
burner orifice to a smaller size. Input should be reduced 4% for each 1000 feet above sea level. Check with the
local gas utility for proper orifice size identification. Consult your local gas company for assistance in determining
the proper orifice for your locality or refer to ANSI Z223.1-the latest edition, Appendix F.
INSTALLATION PREPARATION
7
This appliance has been converted for use at an altitude of
Orifice Size Manifold Pressure
Input(Btu/hr) Fuel Type
Date of Conversion Converted By
53D9015. Rev 1 03/03

APPLIANCE LOCATIONS AND SPACE REQUIREMENTS
This appliance may be installed along a wall, across a corner or use an exterior chase. The BBV400NV Series
may be installed directly on the floor or on a raised platform to enhance its visual impact. Figure 2 illustrates a
variety of ways the appliance may be located in a room.
Due to high temperatures, the appliance should be located out of traffic and away from furniture and draperies.
INSTALLATION PREPARATION
8
FRAMING THE ENCLOSURE
Figure3showsa typicalframing ofthis applianceassumingcombustiblematerialsare used. Allrequired clearances
shown in Figures 1 and 3 to combustibles around the appliance must be adhered to. Any framing at the back and
sides of the appliance must be outside the spacers. Any framing on top of the appliance must be above the top
spacers.
Fireplace framing can be built before or after the fireplace is set in place. Framing should be positioned to
accommodate wall coverings and fireplace facing material.
FIGURE 2
61 3/4"
61 3/4"
35 1/4"
35 1/4"
1/2" MIN. (13 MM)
1/2" MIN. (13 MM)
30 13/16"
30 13/16"
15 1/2"
15 1/2"
1" MIN. (25 MM)
1" MIN. (25 MM)
39"
39"
53D9015. Rev 1 03/03

12"
12"
MAX.
MAX.
3 1/2" MIN. 
3 1/2" MIN. 
NON-COMBUSTIBLE 
NON-COMBUSTIBLE 
MATERIAL
MATERIAL
12" MIN. FROM
12" MIN. FROM
FIREPLACE OPENING 
FIREPLACE OPENING 
TO BOTTOM OF 
TO BOTTOM OF 
COMBUSTIBLE
COMBUSTIBLE
MANTEL
MANTEL
2"MIN.
2"MIN.
STORM COLLAR
STORM COLLAR
FLASHING
FLASHING
APPROVED COWL
APPROVED COWL
6 FT.
6 FT.
MIN.
MIN.
AS SPECIFIED BY VENT
AS SPECIFIED BY VENT
MANUFACTURER.
MANUFACTURER.
"B" VENT CLEARANCE
"B" VENT CLEARANCE
MINIMUM CLEARANCE AS
MINIMUM CLEARANCE AS
MANUFACTURER.
MANUFACTURER.
SPECIFIED BY VENT
SPECIFIED BY VENT
SUPPORT
SUPPORT
LISTED CEILING
LISTED CEILING
GAS VENT
GAS VENT
4" TYPE "B"
4" TYPE "B"
WALL
WALL
1/2" AIR SPACE TO SIDES
1/2" AIR SPACE TO SIDES
AND REAR OF FIREPLACE.
AND REAR OF FIREPLACE.
GAS APPLIANCE
GAS APPLIANCE
FLOOR
FLOOR
FIREPLACE AND VENTING INSTALLATION
9
FIGURE 3
12" MIN. FROM
FIREPLACE OPENING 
TO BOTTOM OF 
COMBUSTIBLE
MANTEL
12"
MAX.
3 1/2" MIN. 
NON-COMBUSTIBLE 
MATERIAL
1 FT.
MIN.
2" MIN.
APPROVED
BY VENT
AS SPECIFIED
COWL
COWL
SUPPORT
WALL
4" TYPE "B" GAS VENT
CHIMNEY
CHIMNEY
MANUFACTURER.
AND REAR OF FIREPLACE.
GAS APPLIANCE
1/2" AIR SPACE TO SIDES
THROUGH WALL
4" TYPE "B" GAS VENT
APPROVED THIMBLE FOR
FLOOR
"0" CLEARANCE TO SPACERS
53D9015. Rev 1 03/03

VENTING REQUIREMENTS
10
Warning: Do not connect this appliance to a chimney flue serving a separate solid fuel burning appliance.
Carbon deposits (Soot) and creosote from solid fuels can clog the vent from the appliance causing
poisonous carbon monoxide to be released into the room in which the appliance is installed.
All vented gas-fired appliances when operating correctly produce small concentrations of carbon monoxide along
with other combustion products. Should something interfere with the operation of the appliance, it is possible for
the appliance to produce deadly quantities of poisonous carbon monoxide. All flue products from this appliance
must be vented to the outside at all times. Never operate an appliance designed to be vented without a correctly
working vent system connected to the appliance.
Warning: Venting of this appliance is one of the most important parts of the installation. Venting systems
must be installed and inspected according to these instructions and local codes or in the absence of local
codes, according to the National Fuel Gas Code Z223.1 - Latest edition, by a licensed or otherwise qualifed
installer.
Your localgascompany should have copiesofthe National Fuel CodeZ223.1orother installation codes applicable
to your area.
Venting requirements and accepted methods vary greatly depending on the particular installation. It is impossible
tothoroughlydefineall possibleinstallation circumstancesinthis manual. Thefollowing instructionsandillustrations
are general guidelines only. All venting material must be instatlled according to local codes, or in the absence of
such codes, according to the National Fuel Gas Code Z223.1.
Warning: An improperly vented gas-fired appliance can lead to death from carbon monoxide posioning.
Venting materials are not provided with this appliance and must be purchased separately.
This appliance must be installed using 4" type “B” vent that has been listed by a nationally recognized testing
agency..
Attach the vent pipe to the appliance using four (4) sheet metal screws.
Vent must maintain minimum rise of ˘ inch per foot of horizontal run.
Venting terminals shall not be recessed into a wall or siding.
53D9015. Rev 1 03/03

GAS SUPPLY CONNECTIONS
11
Bothrigid and flexible gas lines are approved for use with these appliances. Consult you local codes for approved
gas piping practices. Some local codes may require the installation of a manual main shut-off valve and union
external to the appliance. Approved components must be used and the union must be of the ground joint type.
1. Knockouts are on each side of the fireplace outer jacket for convenience in running the gas line to the unit.
2. Choose the gas line routing that results in the shortest length of run and requires the least number of fittings
and joints to avoid excessive pressure drop.
3. Connect the gas line to the inlet side of the gas valve.
NOTE: Compounds used on thread joints of gas piping must be resistant to the actions of liquefied
petroleum gases.
A 1/8 inch (3 mm) N.P.T. plugged tapping, accessible for test gauge connection, should be provided in the
gas supply line leading to the unit’s shutoff valve.
4. After gas piping installation is complete, carefully check all piping connections for gas leaks using a leak
detectingsolution.
Caution: The gas valve can be damaged if subjected to more than ˚ psig during pressure testing
of the gas piping system. The gas valve must be disconnected or isolated from the piping system
during pressure testing.
ELECTRICAL WIRING
NOTE: This appliance must be electrically wired and grounded in accordance with local codes
and/or with the National Electric Code ANSI/NFPA 70 - Latest Edition, and Canadian Electrical
Code C22.1.
1. Model BBV400NV uses a millivolt standing pilot valve system and does not require a 110 volt supply for
operation.
Warning: Do not connect 110 Vac to millivolt valve. This will cause the unit to malfunction and
destroy the valve control system.
53D9015. Rev 1 03/03

ELECTRONIC IGNITION
12
3. Model BBV400NE requires connection to a 110 VAC supply from a remote wall switch to the Junction Box.
Connect the 110 VAC supply to the transformer leads and the receptacle. Insure that the 110 VAC supply is
properly grounded to the unit. Figure 4.
Caution!: Alwaysmakesurethe power is "OFF" before attemptingtoinstall or service any electrical
wiring or components.
FIGURE 4
TAP
TAP
LIMIT SWITCH
LIMIT SWITCH
WALL
WALL
GAS CONTROL/ELECTRONIC IGNITION ROUTING
GAS CONTROL/ELECTRONIC IGNITION ROUTING
PILOT
PILOT
TO BURNER
TO BURNER
GAS LINE-OUT
GAS LINE-OUT
EQUIVALENT.
EQUIVALENT.
WITH SAME OR
WITH SAME OR
DEGREE C. REPLACE
DEGREE C. REPLACE
WIRE TYPE 105
WIRE TYPE 105
SUPPLY
SUPPLY
PILOT GAS
PILOT GAS
GROUND
GROUND
PILOT BURNER
PILOT BURNER
GND
GND
COMMON
COMMON
LINE
LINE
120V. 60 Hz.
120V. 60 Hz.
POWER SUPPLY
POWER SUPPLY
TRANSFORMER
TRANSFORMER
SWITCH
SWITCH
IGNITION WIRE
IGNITION WIRE
TAP
TAP
PRESSURE
PRESSURE
OUTLET
OUTLET
ELECTRONIC CONTROL
ELECTRONIC CONTROL
CONTROL ADJUST. SCREW
CONTROL ADJUST. SCREW
INLET PRESSURE
INLET PRESSURE
IN
IN
GAS CONTROL VALVE
GAS CONTROL VALVE
GAS SUPPLY - IN
GAS SUPPLY - IN
ON
ON
OFF
OFF
MV
MV
PV
PV
PV
PV
MV
MV
SPARK
SPARK
(OPT)
(OPT)
TH-W
TH-W
24V
24V
(GND)
(GND)
24V
24V
(BURNER)
(BURNER)
GND
GND
PV
PV
MV/PV
MV/PV
MV
MV
WARNING
WARNING
PV-1A MAX. MV-1A MAX.
PV-1A MAX. MV-1A MAX.
24V, 60 Hz
24V, 60 Hz
90 SEC. L.O.
90 SEC. L.O.
100% SHUTOFF IP
100% SHUTOFF IP
S8600H
S8600H
device that has been wet - replace it.
device that has been wet - replace it.
it gets wet. Never try to use a
it gets wet. Never try to use a
This device can malfunction if
This device can malfunction if
serious injury or death.
serious injury or death.
Explosion hazard. Can cause
Explosion hazard. Can cause
9
8
7
6
5
4
3
21
53D9015. Rev 1 03/03

FIREPLACE SETUP
13
1. Remove the box containing the log from the firebox and discard the two (2) shipping pads. Carefully remove
the log from the box.
2. PositionlogoverburnerasshowninFigure5. Wearprotective gloves to place glowing ember meterial in front
and on top of burner tube. The ember material should be separated into small (nickel size) pieces and spread
evenly in front of burner. Lava rock may be placed on the hearth around the ember material.
Warning: Improper log placement mayresult in production ofincreased quanities of poisonous
carbon monoxide and soot.
3. Installthe glass door assembly supplied separatelyfrom this package. The glass door isinstalled by inserting
thetoptwo(2)pinsinto the receiving holes above the fireplace opening and then inserting two (2) pins into the
bottom. Use care not to bump or scratch the glass. Glass door assembly model number GD36PB or model
number GD36B must be installed when the fireplace is in use.
FIGURE 5
DO NOT COVER
LARGE PORT HOLES
BURNER TUBE LAVA ROCK
EMBER MATERIAL
53D9015. Rev 1 03/03

GAS VALVE SHOWN IN PILOT POSITION
GAS VALVE SHOWN IN PILOT POSITION
CONTROL 
CONTROL 
KNOB
KNOB
PILOT ADJUSTMENT
PILOT ADJUSTMENT
SCREW
SCREW
SUPPLY
SUPPLY
GAUGE PORT
GAUGE PORT
MANIFOLD
MANIFOLD
GAUGE PORT
GAUGE PORT
HI/LO FLAME
HI/LO FLAME
ADJUSTMENT KNOB
ADJUSTMENT KNOB
O
F
F
P
I
L
O
T
H
I
L
O
TP
TP
TH
TH
TP
TP
TH
TH
O
N
OPERATING INSTRUCTIONS
Warning!: Never operate this unit with the glass removed.
14
MILLIVOLT STANDING PILOT SYSTEM
1. Ifanoptionalwallmountedswitchor appliance mounted On/Off switch was used, switch to the “OFF” position.
2. Turn off all electrical power to the appliance.
3. Open the hinged lower grille. Push in gas control knob slightly and turn clockwise to “OFF”.
4. Wait five (5) minutes to clear out any gas. If you then smell gas do not attempt to light. Follow the instructions
in the warning above. If you do not smell gas proceed to the next step.
5. Depress gas valve control knob partially, and turn counterclockwise to the pilot position. Figure 6.
6. Depress control knob in until it stops and hold
in this position while pushing the red piezo
ignitor button until the pilot lights. The control
knob should be held depressed for a few
seconds. Release the control knob and the
pilot should remain lit.
7. Depress the control knob partially and turn
counterclockwise to the "ON" position.
8. Ifan optional wall switch or appliance mounted
switch was used, switch to "ON". The main
burner should now be "ON".
9. Close the lower grille.
FIGURE 6
A. BEFORE LIGHTING smell all around the appliance area for gas. Be sure to smell
A. BEFORE LIGHTING smell all around the appliance area for gas. Be sure to smell
next 
next 
to the floor because some gas is heavier than air, and will settle on the f
to the floor because some gas is heavier than air, and will settle on the f
loor.
loor.
WHAT TO DO IF YOU SMELL GAS
WHAT TO DO IF YOU SMELL GAS
Do not try to light any appliance.
Do not try to light any appliance.
Do not touch any electrical switch; do not use any phone in your buil
Do not touch any electrical switch; do not use any phone in your buil
ding.
ding.
Immediately call your gas supplier from a neighbor's phone. Follow th
Immediately call your gas supplier from a neighbor's phone. Follow th
e supplier's
e supplier's
instructions. 
instructions. 
If you cannot reach your gas supplier, cal
If you cannot reach your gas supplier, cal
l the fire department.
l the fire department. 
B. Use only your hand to push in or turn knob. Never use tools. If the knob will
B. Use only your hand to push in or turn knob. Never use tools. If the knob will
not push 
not push 
in or turn by hand, don't try to repair it; call a qualified service techni
in or turn by hand, don't try to repair it; call a qualified service techni
cian Forced or
cian Forced or
attempted repair may result in a fire or explosion.
attempted repair may result in a fire or explosion.
C. Do not use this appliance if any part has been under water. Immediately call
C. Do not use this appliance if any part has been under water. Immediately call
a
a
qualified service technician to inspect the appliance and to replace any pa
qualified service technician to inspect the appliance and to replace any pa
rt of the 
rt of the 
control system and any gas control which has been under water.
control system and any gas control which has been under water.
WARNING! 
WARNING! 
IF YOU DO NOT FOLLOW THESE INSTRUCTIONS EXACTLY, A FIRE OR 
IF YOU DO NOT FOLLOW THESE INSTRUCTIONS EXACTLY, A FIRE OR 
EXPLOSION MAY RESULT CAUSING PROPERTY DAMAGE, PERSONAL 
EXPLOSION MAY RESULT CAUSING PROPERTY DAMAGE, PERSONAL 
INJURY OR LOSE IF LIFE.
INJURY OR LOSE IF LIFE.
FOR YOUR SAFTEY READ BEFORE LIGHTING
FOR YOUR SAFTEY READ BEFORE LIGHTING
53D9015. Rev 1 03/03

OPERATING INSTRUCTIONS
15
ELECTRONIC IGNITION SYSTEM
1. STOP! Read the safety information at the beginning of this section.
2. Turn off the electric power to the appliance.
3. This appliance is equipped with an ignition device which automatically lights the pilot. Do NOT try to light the
pilot by hand.
4. Open control access panel.
5. Turn gas control knob clockwise to "OFF". Refer to Figure 7.
MAINTENANCE INSTRUCTIONS
1. Control Compartment - Keep the control compartment clean by brushing and vacuuming at least once a year.
Always turn off the gas valve and all electrical power to the unit before cleaning.
2. Checking Flame Patterns - The burner flame pattern should be checked periodically. The flames should be
steady and not lifting. See Figure 8.
3. Vent System Inspection - The appliance and vent system should be inspected at least annually. A qualified
servicepersonshouldcheckventpipe and all connections for tightness and to make sure there is no blockage
at the termination, no unusual corrosion or other damage.
4. The appliance area must be kept clear and free from combustible materials, gasoline and other flammable
vapors and liquids.
FIGURE 7
6. Wait five (5) minutes toclearoutanygas. Ifyouthensmellgas, STOP! Follow the instructions in the warning
on page 14. If you do not smell gas, go to next step.
7. Turn gas control knob counterclockwise to "ON".
8. Close control access panel.
9. Turn on all electric power to the appliance.
10. If the appliance will not operate, follow the instructions "To Turn Off Gas To Appliance" and call your service
technician or gas supplier.
TO TURN OFF GAS TO APPLIANCE
TO TURN OFF GAS TO APPLIANCE
1. TURN GAS CONTROL KNOB 
1. TURN GAS CONTROL KNOB 
CLOCKWISE TO OFF.
CLOCKWISE TO OFF.
2. TURN OFF ALL ELECTRICAL
2. TURN OFF ALL ELECTRICAL
POWER TO THE UNIT. 
POWER TO THE UNIT. 
3. SHUT OFF MAIN GAS SUPPLY 
3. SHUT OFF MAIN GAS SUPPLY 
VALVE TO THE UNIT.
VALVE TO THE UNIT.
GAS CONTROL 
GAS CONTROL 
KNOB
KNOB
POSITION 
POSITION 
INDICATER
INDICATER
ON
ON
OFF
OFF
53D9015. Rev 1 03/03

RED GLOWING EMBERS
RED GLOWING EMBERS
1. LOOK DOWN BETWWEN THE LOGS TO SEE THE BURNER.
1. LOOK DOWN BETWWEN THE LOGS TO SEE THE BURNER.
THE FLAMES SHOULD BE STABLE ON THE BURNER.
THE FLAMES SHOULD BE STABLE ON THE BURNER.
2. THE FLAMES SHOULD BE BLUE AT THE BURNER AND
2. THE FLAMES SHOULD BE BLUE AT THE BURNER AND
YELLOW AT THE TOP. 
YELLOW AT THE TOP. 
3. INSURE THAT THE PILOT FLAME IS STABLE AND
3. INSURE THAT THE PILOT FLAME IS STABLE AND
CONTACTING THE THERMOPILE.
CONTACTING THE THERMOPILE.
YELLOW TIPPED FLAMES
YELLOW TIPPED FLAMES
LOW MASS
LOW MASS
THERMOCOUPLE
THERMOCOUPLE
THERMOCOUPLE
THERMOCOUPLE
PILOT
PILOT
16
5. Insure that the flow of combustion and ventilation air is not obstructed.
6. 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.
7. This appliance must only be operated with glass door model number GD36PB or model number GD36B
properly installed per the Fireplace Setup instruction section of this manual. If the door is damaged or broken,
it may only be replaced by a complete assembly as supplied by the manufacturer. See the Repair Parts List.
8. Never attempt to replace the glass panel with another piece of glass or use any other substitute materials.
9. Never attempt to operate this appliance with a broken glass door.
10. When removing or replacing the glass door for cleaning or inspection, care must be taken not to abuse the
glass panel by striking, slamming shut, or scratching against other surfaces.
11. Only trim kits and other optional accessories supplied by the manufacturer may be used with this appliance.
Draft relief openings must never be covered or blocked.
12. Cleaning the glass - Wear gloves while handling the glass door assembly. DO NOT REMOVE GLASS DOOR
WHEN HOT. Handle the glass door with care to avoid striking or scratching the glass. Clean the inside and
outside surfaces of the glass panel using a mild detergent and water solution with a soft cloth. Do not use
abrasive cleansers which might scratch the glass surface. Do not attempt to clean the glass when the surface
is hot. The glass door must be properly reinstalled after cleaning. Do not operate this appliance without the
glass door properly in place.
13. Service - Any service to the burner/gas control system or electrical system and its components, must only be
performed by a qualified service technician.
MAINTENANCE INSTRUCTIONS
FIGURE 8
53D9015. Rev 1 03/03

17
OUTSIDE COMBUSTION AIR PRECAUTIONS & RECOMMENDATIONS
NOTE: The use of outside air for combustion is optional unless required by building codes. It is only necessary
to supply outside combustion air to one side of the fireplace. Use the model OAC4 combustion air kit.
1. Extremelylongrunsand numerousturns intheduct leadingfrom thefireplacetothecombustion airassembly
should be avoided. These conditions will increase the resistance to the free flow of air through the duct.
Refer to Figure 9 for methods of installing the outside air for combustion assemblies.
2. The combustion air assembly should be located at an exterior location, which is not likely to be accidentally
blocked in any manner. The assembly should be located above the snow line to prevent blockage by snow
accumulation.
3. Thecombustion air inlet assembly should never bemountedina garage or storage area where combustible
fumes such as gasoline might be drawn into the fireplace.
4. Combustion air can be drawn from the crawl space under a house when an adequate supply of air is
provided by open ventilation.
5. Do not take combustion air from attic space or garage space.
CONCRETE SLAB INSTALLATION 
CONCRETE SLAB INSTALLATION 
(OPTIONAL OUTSIDE AIR RUNS)
(OPTIONAL OUTSIDE AIR RUNS)
INLET GRILLE
INLET GRILLE
IN SOFFIT
IN SOFFIT
(OVERHANG)
(OVERHANG)
8' MAX.
8' MAX.
INSTALLATION ABOVE BASEMENT
OR CRAWL SPACE
TO OUTSIDE WALL
TO OUTSIDE WALL
DUCT EXTENDED
DUCT EXTENDED
TO MISS JOIST
TO MISS JOIST
FIGURE 9
53D9015. Rev 1 03/03

18
FIGURE 10
LONGER LENGTH OF THE TUBE
LONGER LENGTH OF THE TUBE
TO OUTSIDE.
TO OUTSIDE.
INSERT SHORTEST SIDE OF
INSERT SHORTEST SIDE OF
THE TUBE THROUGH THE 
THE TUBE THROUGH THE 
FIREPLACE OUTER WRAP.
FIREPLACE OUTER WRAP.
STEP 1: SECURE OUTSIDE AIR STARTING
STEP 1: SECURE OUTSIDE AIR STARTING
COLLAR TO LEFT SIDE OF FIREPLACE WITH
COLLAR TO LEFT SIDE OF FIREPLACE WITH
FOUR SHEET METAL SCREWS PROVIDED. 
FOUR SHEET METAL SCREWS PROVIDED. 

STEP 2: SECURE OUTSIDE 
STEP 2: SECURE OUTSIDE 
DUCT TO STARTING COLLAR
DUCT TO STARTING COLLAR
WITH DUCT CLAMP OR SCREWS.
WITH DUCT CLAMP OR SCREWS.
SCREWS
SCREWS
6" DIA. HOLE FOR OAC4
6" DIA. HOLE FOR OAC4
NAIL
NAIL
HOLES
HOLES
COMBUSTION AIR ASSEMBLY
MODEL OAC-4 COMBUSTION AIR ASSEMBLY
1. Removethecoverplatefromthe4-inchoutlet opening location on the left outside of the fireplace. DO NOT
remove the cover if the outside air will not be connected.
2. Place the starting collar (4 inch) into the hole on the left side of the fireplace. Fasten it in place with the four
sheet metal screws provided.
3. Cut a 6-inch diameter opening for model OAC-4 in the outside wall covering where the outside vent is to be
located.
4. Select and cut a piece of duct sufficient length to attach to the fireplace and protrude at least three inches
beyond the face of the wall to which the inlet air vent will be attached. The duct may be cut with a standard
pocket knife (use FP-4 U duct for maximum efficiency and safety). Do not use a combustible duct. Always
use UL Listed Class 0 or 1 duct material. If it is necessary to splice the duct, a Model 403 duct connector
should be used to splice duct sections.
5. If the duct is the insulated type, push the insulation back from one end of the duct approximately two
inches.
6. Slip the exposed end of the duct over the starting collar on the fireplace.
7. Using the sheet metal screws or duct clamps, secure the duct to the starting collar and to the outside vent.
8. Nail or screw the outside vent to the surface of the wall.
53D9015. Rev 1 03/03

TROUBLESHOOTING
While the manufacturer has made every reasonable effort to insure that this heater operates properly and
satisfactorily, sometimes problems do arise. The following troubleshooting chart lists several problems with their
probable cause and solution. Any adjustments and/or replacements must be made by a qualified person. Do not
replace any component with a different type. Only use components supplied by the manufacturer of this heater.
Cleanorreplace.
Defective auto. pilot valve.
Clean.
Cleanports.
Realignorreplaceburner.
Cleanintaketo burners.
Improperpilotlocation.
Pilot flame too small.
Repositionpilot.
Checkorifice, increase gas.
Burnerportsclogged. Clean ports.
Lowpressure. Adjustpressureregulator.
Main gas OFF. Open manualvalve.
Defect in gas valve. Replace.
Solution
Cause
Flametoolarge. Pressure regulator set too high.
Defectiveregulatoronheater.
Reset,usingmanometer.
Replace.
Burnerorificetoo large. Replace with correct size.
Noisy pilot.
Burr in orifice. Removeburrorreplace.
Reducepilot gas.
Clogged vent system
Cloggedburnerports.
Misalignedorifice.
Too little primary air. Cleanair intake to burners..
Insufficient primary air.
Blocked venting. Clean.
Defectiveauto.valve.
Replace.
Defectivethermocouple.
Defective switch.
Replace.
Replace.
Repairorreplace.
Defectiveauto.valve.
Poorly functioning vent system
Gassupplyinterrupted.
Defectivethermocoupleorcontrol
If pilot can be relit but main burner and pilot go
off after ignition, have vent system checked and
correctedimmediately.
Attempttorelightpilotand mainburner. Ifunable
torelightpilot,checkthermocoupleand/orcontrol.
Replace.
Mainburnerwon’tturnON.
Mainburnerwon’tturnOFF.
Delayedignition.
Failuretoignite.
Yellow excessive flame.
Noisy flame.
Floatingflame.
Problem
Burnerand pilot flame go
out.
19
53D9015. Rev 1 03/03

20
All repair part orders should be placed through your local dealer. To ensure prompt and accurate service, please
provide the following information when placing a repair part order: Model number of yourAppliance, Part Name,
Part Number, and Quantity of parts needed.
PARTS LIST
Part
Part
077155A
077155A
077154A
077154A
077101A
077101A
073728A
073728A
066308A
066308A
077403A
077403A
073390A
073390A
073391A
073391A
057958A
057958A
057955A
057955A
057956A
057956A
060874A
060874A
053297A
053297A
053298A
053298A
052139A
Description
Description
Glass Door Brass
Glass Door Black
Log Set
Burner
Orifice (Natural #45)
Orfice (LP #55)
Pilot (Standing Piiot Natural)
Pilot (Standing Pilot LP)
Piezo Ignitor
Gas Valve (Standing Pilot Natural)
Gas Valve (Standing Pilot LP)
Pilot (Electronic Ignitor)
Gas Valve (Electronic Ignitor)
Transformer Assembly
Electronic Ignitor Module

53D9015. Rev 1 03/03
Technical Service Department
2813 W. Mall Drive, Unit B.
Florence, Alabama 35630.
Tel. - 1-866-500-5671
www.monessenhearth.com