LG B-VENT GAS GC3 User Manual
INSTALLATION AND OPERATION MANUAL
™
B-Vent Gas
Fireplace Insert
Retain These Instructions For Future Reference
P/N 775,225M Rev. A, 06/2007
A French manual is available upon request. Order P/N 775,225CF.
Ce manuel d’installation est disponible en francais, simplement
en faire la demande. Numéro de la pièce 775,225CF.
In the Commonwealth of Massachusetts:
• Installation must be performed by a licensed plumber or gas tter
• See Table of Contents for location of additional Commonwealth of
Massachusetts requirements
WARNINGS
Report No. 050-S-07b-5
• Hot! Do not touch! The glass and surfaces of this appliance will be hot during operation and will
retain heat for a while after shutting off the appliance. Severe burns may result.
• Carefully supervise children in the same room as appliance.
Firestar™ (GC3)
• Suitable for installation into masonry or factory built fireplaces. These appliances 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 unless a certified kit is used.
• Lennox™ gas-burning appliances are designed for use as a supplemental heater. They are not intended for
continuous use as a primary heat source.
WARNING: If the information in this manual is not
followed exactly, a fire or explosion may result
causing property damage, personal injury or loss
of life.
FOR YOUR SAFETY
Do not store or use gasoline or other flammable
vapors or liquids in the vicinity of this or any other
appliance.
WHAT TO DO IF YOU SMELL GAS:
• DO NOT light any appliance.
• DO NOT touch any electrical switches.
• DO NOT use any phone in your building.
• Immediately call your gas supplier from a
neighbor’s phone. Follow your gas supplier's
instructions.
• If your gas supplier cannot be reached, call
the fire department.
Installation and service must be performed by a qualified installer, service agency or the gas supplier.
AVERTISSEMENT: Assurez-vous de bien suivre les instructions données dans cette notice pour réduire au minimum
le risque d’incendie ou d’explosion ou pour éviter tout
dommage matériel, toute blessure ou la mort.
POUR VOTRE SÉCURITÉ: Ne pas entreposer ni utiliser d'essence
ni d'autres vapeurs ou liquides inflammables à proximité de
cet appareil ou de tout autre appareil.
POUR VOTRE SÉCURITÉ: Que faire si vous sentez une odeur
de gaz:
• Ne pas tenter d'allumer d'appareil.
• Ne touchez à aucun interrupteur.
• Ne pas vous servir des téléphones se trouvant dans le bâti
ment
• Appelez immédiatement votre fournisseur de gaz depuis un
voisin. Suivez les instructions du fournisseur.
• Si vous ne pouvez rejoindre le fournisseur de gaz, appelez
le service des incendies.
L'installation et l'entretien doivent être assurés par un
installateur ou un service d'entretien qualifié ou par le
fournisseur de gaz.
-
Table of Contents
Cautions & safety ..................................................................................... 3
orifiCe size / altitude adjustment .................................................................... 4
fireplaCe requirements ................................................................................ 4
Codes & approvals..................................................................................... 4
requirements for the Commonwealth of massaChusetts ........................................ 4
pre-installation ......................................................................................5-7
features ............................................................................................ 5
paCkaging list ..................................................................................... 5
ratings ............................................................................................. 5
insert & fireplaCe dimensions .................................................................... 6
ClearanCes to Combustibles ....................................................................... 7
insert leveling ..................................................................................... 7
installation ......................................................................................... 8-12
venting installation ............................................................................... 8
flue Collar ConneCtion ........................................................................... 8
zero ClearanCe fireplaCe installation ............................................................ 9
briCk liner installation ........................................................................... 9
log installation .................................................................................... 9
surround panels installation ....................................................................10
lower front filler panel ........................................................................11
gas line installation .............................................................................11
gas pressure requirements ......................................................................11
gas supply line sizing ............................................................................11
lp & natural gas supplies ......................................................................12
air shutter adjustment ..........................................................................12
operating instruCtions ............................................................................13-16
pre-lighting CheCklist ...........................................................................13
lighting instruCtions .............................................................................13
flame Color & behavior ..........................................................................14
replaCing burner orifiCes........................................................................14
paint Curing ......................................................................................15
quiet operation ...................................................................................15
blower ............................................................................................15
“on-off” switCh and thermostat ...............................................................15
pilot adjustment .................................................................................15
millivolt Control system ........................................................................16
maintenanCe & serviCing..........................................................................17-19
maintenanCe CheCklist ............................................................................17
glass maintenanCe ................................................................................17
glass door removal..............................................................................17
glass door Cleaning and repair .................................................................18
blower wiring diagram ..........................................................................18
blower removal ..................................................................................18
eleCtriCal requirements ..........................................................................18
fuel Conversion & Cassette installation ........................................................19
troubleshooting .......................................................................................20
replaCement parts ....................................................................................21
insert labels ......................................................................................22-23
produCt referenCe information .......................................................................24
2
Cautions & safety
FOR YOUR SAFETY do not install or operate your Fire-
star™ gas insert without first reading & understanding
this manual. Any installation or operation of the appliance deviating from that which is stated in this manual
WILL void the warranty & may be hazardous.
INSTALLATION & REPAIR SHOULD ONLY BE DONE BY
A QUALIFIED SERVICE TECHNICIAN. DO NOT ATTEMPT
TO SERVICE THE APPLIANCE YOURSELF.
The insert should be inspected & cleaned before use
& at least annually by a qualified service technician.
More frequent cleaning may be required due to excessive lint from bedding material, carpeting, etc.
It is imperative that control compartments, burners, &
circulating air passageways of the room heater be kept
clean.
Adequate clearances around the combustion chamber
and accessibility clearances for servicing & proper
operation must be maintained.
Turn off the gas before servicing this appliance. It is
recommended that a qualified service technician perform an appliance check-up at the beginning of each
heating season.
All installations must conform with all local, state, &
national codes. In the absence of local codes, the installation must conform with National Fuel Gas Code ANSI
Z223.1-latest edition, also known as NFPA 54. Refer
to the National Fuel Gas Code & local zoning & code
authorities for details on installation requirements.
Your Firestar gas insert must be vented to the outside
in accordance with the latest edition of the National
Fuel Gas Code.
This gas insert MUST be vented directly to the outside
& MUST NEVER be attached to a chimney serving a
separate solid fuel burning appliance. Each gas appliance MUST USE a separate vent system. Common vent
systems are PROHIBITED.
This appliance uses room air for combustion. It is im-
perative that provisions for adequate combustion and
ventilation air be made. This appliance is NOT designed
to and will not operate in a negative pressure. Contact
your dealer if you suspect such a situation exists.
Mobile home installations must conform with the Mobile
Home Construction and Safety Standard, Title 24 CFR,
Part 3280, or, when such a standard is not applicable,
the Standard for Mobile Home Installations, ANSI A225.1
- latest edition.
The appliance, when installed, must be electrically
grounded in accordance with local codes or in the
absence of local codes, with the National Electrical
Code, ANSI/NFPA 70 - latest edition.
Your Lennox™ gas insert must be equipped for the
proper fuel type & altitude at which it will be operated.
Any operation outside the parameters outlined in this
manual may result in a hazardous condition & will void
the warranty. Please carefully read the sections pertaining to these subjects and/or be sure your appliance is
properly equipped.
Do not use this insert if any part has been under water.
Immediately call a qualified service technician to inspect
the appliance & to replace any part of the control system
& any gas control which has been under water.
Due to high temperatures, the insert should be located
out of traffic areas & away from furniture & draperies.
Children & adults should be alerted to the hazards of
high surface temperature & should stay away to avoid
burns or clothing ignition. Young children should be
carefully supervised when they are in the same room as
the Lennox gas insert. Clothing or any other flammable
material should not be placed on or near the insert.
Never use solid fuels such as wood, paper, cardboard,
coal, or any flammable liquids, etc., in this appliance.
Any grill, panel, or glass removed for service MUST be
replaced prior to operating the insert. Do not operate
appliance with the glass front removed, cracked or
broken. Replacement of the glass should be done by a
qualified service technician.
DO NOT USE abrasive cleaner on the glass door assem-
bly. DO NOT ATTEMPT to clean the glass door when it
is hot.
Gold & nickel plated surfaces must be cleaned with
glass cleaner & a clean soft cloth before firing the first
time or fingerprints will remain permanently. NEVER use
brass polish to clean gold or nickel, this will remove
the plating!!!
When opening the lower door on the face while the
insert is burning, pull at the far left or far right vent
openings, because the door is hot during operation.
Lennox Hearth Products, its employees, or any of its
representatives assume no responsibility for any damages caused by an inoperable, inadequate, or unsafe
condition as a result of any improper operation, service
or installation procedures, whether direct or indirect.
INSTALLER: THESE INSTRUCTIONS ARE TO REMAIN
WITH THE HOME OWNER!
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
3
Orifice Size/Altitude Adjustment
For altitudes above 2,000 feet, the orifice should be de-rated
by 4% for every 1,000 feet to maintain the proper ratio of
gas to air. Improper orifice sizing may result in damage
and unsafe conditions. Changing the orifice should only be
done by a qualified service technician. Contact your Lennox
Hearth Products dealer for proper orifice sizes (see Page 21
and 24 for more information).
The installer must mechanically attach the marking supplied
with the gas fireplace insert to the inside of the firebox of the
fireplace into which the gas fireplace insert is installed.
IMPORTANT: When installing these appliances into a factory built fireplace or heat-form, the air flow within and
around the fireplace shall not be altered by the installation
of the insert (i.e. DO NOT BLOCK louvers or cooling air
inlet or outlet ports, circulating air chambers in a steel
fireplace liner or metal heat circulator).
The Firestar™ Insert
• Must conform with all local, state, and national installation
codes. In the absence of local codes, the installation must
conform with National Fuel Gas Code ANSI Z223.1 - latest
edition, also known as NFPA 54. Refer to the National
Fuel Gas Code and local zoning and code authorities for
details on installation requirements.
• Must conform with the Manufactured Home Construc
tion and Safety Standard, Title 24 CFR, Part 3280, or
when such a standard is not applicable, the Standard for
Manufactured Home Installations, ANSI A225.1 - latest
edition for manufactured (mobile) home installations.
• Must be vented directly to the outside in accordance with
the latest edition of the National Fuel Gas Code and must
never be attached to a chimney serving a separate solid
fuel burning appliance.
• Uses room air for combustion. It is imperative that provi
sions for adequate combustion and ventilation air be made.
This appliance is NOT designed to and will not operate in
a negative pressure. Contact your dealer if you suspect
such a situation exists.
• Has been certified for use with either natural gas or pro
pane.
• Is not for use with solid fuels.
• Is approved for sitting rooms and/or bedrooms.
WARNING
THIS FIREPLACE HAS BEEN ALTERED TO
ACCOMMODATE A FIREPLACE INSERT AND
SHOULD BE INSPECTED BY A QUALIFIED
PERSON PRIOR TO RE-USE AS A
CONVENTIONAL FIREPLACE.
-
Codes & Approvals
CertifiCation
Gas appliances must be tested and certified by a nationally recognized testing and certification laboratory to ANSI
(American National Standard Institute) gas appliance safety
standards.
This insert has been tested and certified by OMNI -Test
Laboratories to ANSI Z21.88-2005 Standard for Vented
Gas Fireplace Heaters and UL 307B Gas Burning Heating
Appliances for Manufactured (Mobile) Homes.
-
It has met all necessary ANSI Standards and is fully certified
for installation in any community. If there are any questions
or if you need further substantiation either write to or call
your Lennox Hearth Products dealer. If you have further
questions, please contact Lennox Hearth Products.
Fireplace Requirements
These heaters are designed to be installed into an existing
masonry fireplace (built to UBC 37 standards) or factory
built solid fuel, wood burning fireplace (listed to UL 127
standards) only. All exhaust gases must be vented outside
the structure. Combustion air is drawn from outside the
structure. When installing in a factory built fireplace, the
fireplace grate must be removed and the damper must be
removed or secured open.
If the factory-built fireplace has no gas access hole(s) pro
vided, an access hole of 1-1/2 inches (38 mm) or less may
be drilled through the lower sides or bottom of the firebox
in a proper workmanship like manner. This access hole must
be plugged with a non-combustible insulation after the gas
supply line has been installed.
4
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
new york City, new york (mea)
Installation of these fireplaces are approved for installation in New York City in the US state of New York (MEA#:
138-07-E).
Commonwealth of massaChusetts requirements
Installation of these fireplaces are approved for installation
in the US state of Massachusetts if the following additional
requirements are met -
• 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.
Pre-Installation
paCkaging list
features
Installation Options
Residential - Vented Vertical Only
Manufactured (Mobile) Home
Natural Gas Or Propane (LP)
Bedrooms
Optional Wall-mounted Or Remote Thermostat
Electrical
The fan motor requires 120 Volts AC for operation. The
fireplace is not dependent on the fan or an outside electrical
supply to operate.
Millivolt Valve
This insert is operated with a millivolt valve and therefore
burns even during a power outage.
Fuel
This insert comes from the factory equipped to burn natural
gas at a specified elevation. The insert can be converted
to burn LP (liquid propane) by installing a conversion kit.
Only Lennox Hearth Products conversion kits can be used
to convert from NG to LP or LP to NG. Contact your Lennox
Hearth Products dealer for details.
To install a Firestar insert, an insert body, and surround
(flange) kit are required.
Insert Body Packaging List
1 Insert Body with Burner Cassette and trivet
1 Set of Refractory Brick Panels - 3 pieces (H5866)
1 Log Set (H5860)
1 Lower front 2” filler panel
1 Fasteners: 6 slotted 1/4" truss screws
4 speed nuts
6 spring clips
4-3/8” x 3” leveling bolts
2 socket head screws
1 Installation and Operation Manual
Surround Kits - One Required
29 X 41” Black Trim (75072)
29 X 48” Black Trim (75073)
33 X 41” Black Trim (75074)
33 X 48” Black Trim (75075)
Surround Kit Contents
1 Top Surround
2 Side Surrounds
3 Black Trim Pieces
2 Elbowed Trim Fasteners
RATINGS Firestar™ (GC3)
NATURAL GAS LP GAS
MAX/MIN INPUT BTUH 0-2,000 FT (0-610 M)
MANIFOLD PRESSURE (IN. WC)
MIN./MAX. INLET PRESSURE (IN. WC)
MAXIMUM HEAT OUTPUT BTUS/ HOUR “STEADY STATE” 31,200 31,200
ORIFICE (DMS) 0-2,000 FT (0-610 M)
u Unit factory equipped for 0-2000 FT/0-610 M
u
u
39,000/27,500 39,000/22,600
1.7 - 3.5 3.5 - 10.0
5.0 - 10.5 10.5 - 13.0
#37 #52
5
A
B
C
D
23-3/4”
11-3/8”
9-7/8”
4”
20-3/8”
19 ”
7-3/8”
13-3/4”
24-3/4”
10-1/2”
20 ”
*2 ”
41 ”
26-3/4”
26-1/4”
13-3/4”
7-3/8”
2-1/8”
9-7/8”
11-3/8”
insert dimensions
See Figures 1, 2 and 3 showing insert dimensions and minimum fireplace firebox dimensions to aid you in determining
proper fit into existing fireplace.
* Equipped from the factory with a 2” filler. Contact your
dealer for additional information.
Figure 1
Figure 2
Width of insert behind Surround Panels 26-3/4”
Rear height 18-7/8”
Insert depth into fireplace 13-5/8”
Flue center line from back of surround with
standard draft hood
Flue collar diameter (OD) 3-15/16”
6
Insert Dimensions
11-3/8”
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
minimum fireplaCe Cavity
Figure 3
minimum fireplaCe opening required
A = 29-3/4” Front Opening
B = 19” Height
C = 19” Rear Width
D = 15-1/4” Fireplace Depth
CAUTIONS
• The fireplace in which this gas insert is to be
installed must be thoroughly cleaned if it has
been used to burn wood or synthetic logs. Have
the chimney and all inside surfaces of the fireplace brushed and vacuumed so that no soot,
embers, or loose combustion deposits can be
drawn into the heat circulation blower and blown
into the living area.
• If any portion of the chimney system shows signs
of structural or mechanical weaknesses, such
as: cracks, leaky joints, corroded or warped
surfaces, the faulty portion must be repaired
or replaced prior to installing this appliance.
• The factory built firebox must accept the insert
without modification other than removing bolted
or screwed together pieces such as baffles /
smoke shelf / deflectors, ash lips, glass door,
screen or door tracks, log grates, refractory or
masonry lining and damper assemblies. Any
fireplace component, which is removed, must be
retained so they can be reinstalled to restore the
fireplace to its original operating condition. The
removal of any part must not alter the integrity
of the outer shell of the pre-engineered fireplace
cabinet in any way. Any parts removed must be
replaceable. If any components are removed
from (or altered) from the existing fireplace,
a Warning Label (see Page 4) must be affixed
inside the fireplace firebox, so that it shall be
visible upon removal of the fireplace insert. Note:
RTV high temperature silicone is an approved
adhesive to affix the label.
minimum ClearanCes to Combustibles
E**
F
H
D
C
Trim
Mantel
G
The letters below, C through H, correspond to Figure 4
showing minimum clearances required from the appliance
to combustibles and the minimum projection of the hearth
extension.
C = 6.5” to Side Facing (3/4” or less)
D = 11” to Side Wall
E = 24” to Mantel** (more than 3/4”)
F = 14.5” to Top Facing (maximum thickness 3/4”)
hearth proteCtion
G = Minimum Hearth Protection from Front of Insert*
H = Vertical Distance from Insert Bottom to Combustible
Material.
G
23” 20” 17” 0”
ClearanCes
Hearth / Floor Protection
H
(*Insert bottom is the metal lip below the lower gold trim bar).
0” 2” 4” 6”
Note: Hearth protection to be min. 3/8” (10mm) thick noncombustible or equivalent, with a k factor of .84.
insert leveling
The FireStar™ insert comes with four 3/8”X 3” leveling bolts
(two for use at the rear and two at the front of the insert).
The two at the rear can be used to raise the back of the insert
resting on the fireplace hearth. The two at the front can be
used to adjust the front of the insert on the hearth extension.
To install the bolts a 3/8” nut should be threaded onto the
bolt, followed by a 3/8” flat washer. The bolt should then
be installed from the under side of the insert into the captive
nut in the bottom of the insert. When the bolt is adjusted
to the proper height the nut previously threaded onto the
bolt can be snugged up to the insert bottom.
Figure 4
**The minimum distance from the top of the insert to a
combustible may be reduced to 16” with a mantel shield.
The shield should be made from 18-gage or thicker sheet
metal, 7” by 33”. The shield must be centered over the
insert and spaced one inch below the mantel. The shield
can be fastened to and spaced from the mantel using four
to six screws.
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
7
Installation
Draft Tube
Retaining
Screw
Chimney Cap
insert venting
Refer to Figure 6 which shows a typical installation of this appliance into an existing solid-fuel fireplace.
WARNING: This appliance is equipped with a safety control sys-
tem designed to protect against improper venting of combustion
products. Operation of this heater when not connected to a properly installed and maintained venting system or tampering with
the blocked vent shut-off system can result in carbon monoxide
(CO) poisoning and possible death.
Insert must be vented to the outside in accordance with the current
edition of the National Fuel Gas Code ANSI-Z223.1-latest edition,
also known as NFPA 54
chimney flue serving a separate solid fuel burning appliance.
This gas insert requires a 4” diameter B-vent or listed flex aluminum or stainless chimney liner extending the entire length
of the chimney to ensure proper operation. The vent should
terminate with a chimney cap or rain cap. Chimney should be
sealed around cap to prevent air and rain from entering chimney.
Adhere to vent manufacturer's instructions for installation and
vent termination.
. The insert must not be connected to a
Storm Collar
Chimney - Use With
B-vent Chimney Or
Single Wall Gas Vent
Flex Chimney Liner
Listed To UL 1777 Or
ULC S635.
8
A minimum flue height of 12 feet is recommended.
The insert must be installed so the draft hood is in the same
atmospheric pressure zone as the combustion air inlet to the
appliance.
flue Collar ConneCtion
This insert has a detachable flue
collar to ease installation. To detach
flue collar lift removable vent (trivet)
from top of insert, unscrew draft tube
retaining screw (see Figure 5) and
slide draft tube and flue collar to the
rear. Attach flue collar (with 3 sheet
metal screws or a B-vent connector)
to vent pipe previously installed in
chimney. As the insert is pushed into
fireplace guide draft tube and flue collar into guide brackets until draft tube
retaining screw can be reinstalled in
its original hole.
Figure 5
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
Figure 6
WARNING
Do not substitute the heat-rated flex liner (UL1777 or ULC
S635) for the exhaust with any other type liner or a fire
may result causing property damage, personal injury or
loss of life.
The following vent liner kits are available from Lennox Hearth
Products (see Figure 7 and table below).
Figure 7
VENT KITS
Cat. # Model Description
H0906 VKBVI25 BVI, 4" Dia. x 25’ Length
H0907 VKBVI35 BVI, 4" Dia. x 35’ Length
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