WARNING: If the information in these instructions are not followed exactly, a re or explosion may result causing property damage,
personal injury or loss of life.
— Do not store or use gasoline or other am-
mable vapors and liquids in the vicinity of
this or any other appliance.
UNVENTED GAS LOG HEATER
MODELS
INTERMITTENT
MILLIVOLT
VFNR-24(N,P)-1VFNI-24(N,P)-1
VFNR-30(N,P)-1VFNI-30(N,P)-1
VARIABLE EXPANDED
VFXV-24(N,P)-1VFXI-24(N,P)-1
VFXV-30(N,P)-1VFXI-30(N,P)-1
PILOT EXPANDED
PILOT
INTERMITTENT
VENTED DECORATIVE APPLIANCE
MODELS
MILLIVOLT
VFNR-24(N,P)-1
VFNR-30(N,P)-1
This appliance may be installed in an aftermarket
permanently located, manufactured (mobile)
home, where not prohibited by local codes.
This appliance is only for use with the type of gas
indicated on the rating plate. This appliance is not
convertible for use with other gases.
This is an unvented gas-red heater. It uses air
(oxygen) from the room in which it is installed.
Provisions for adequate combustion and ventila-
tion air must be provided. Refer to page 11.
— 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.
• 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 qualied installer, service agency or the
gas supplier.
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.
WATER VAPOR: A BY-PRODUCT OF UNVENTED
ROOM HEATERS
Water vapor is a by-product of gas combustion.
An unvented room heater produces approximately
one (1) ounce (30ml) of water for every 1,000 BTU's
(.3KW's) of gas input per hour. Refer to page 10.
Page 1
TABLE OF CONTENTS
Section Page
VFXI and VFNI Quick Start Guide ............................................................................................... 3-4
Safety Information for Users of LP-Gas ......................................................................................... 5
Important Safety Information .......................................................................................................... 6
Requirements for Canada .............................................................................................................. 7
Appliance Service History ............................................................................................................ 35
28091-8-0814Page 2
Quick Start Guide - Intermittent Pilot Systems
To START the Fireplace:
If the pilot is NOT lit:
1. At the same time, press the “OFF” and high ame buttons and release once there is an
audible “beep” sound.
2. The pilot will ignite on the sixth beep. You may hear a clicking sound around the same
time as that beep, this is normal.
3. There will be a total of 14 beeps. The main burner will ignite approximately 15 seconds
after the pilot.
If the pilot IS lit.
1. To ignite the burner, press the high ame button (there will be a beep) for approximately
5 seconds until there is a soft click, then release the button.
To ADJUST the Flame Height
1. Double-click the small ame button. “LO” will be displayed.
2. Double-click the large ame button. Flame automatically goes to high re. “HI” will be
displayed.
To SHUT OFF the Fireplace
1. To completely shut off the burner and ignitor, press and hold the “OFF” button until the
unit “beeps.” The ames will go on the burner out once any lingering gas is used up.
2. To shut off the burner but keep the ignitor on, push the low ame button (bottom right) for
10 seconds and then release.
FOR MORE INFORMATION, SEE OPERATION INSTRUCTIONS.
VFXI and VFNI Remote Quick Start Instructions: Cut out this page and keep it near your remote.
28091-8-0814Page 3
THIS PAGE INTENTIONALLY LEFT BLANK
28091-8-0814Page 4
SAFETY INFORMATION FOR USERS OF LP-GAS
Propane (LP-Gas) is a ammable gas which can cause res
and explosions. In its natural state, propane is odorless
and colorless. You may not know all the following safety
precautions which can protect both you and your family from
an accident. Read them carefully now, then review them point
by point with the members of your household. Someday when
there may not be a minute to lose, everyone's safety will depend
on knowing exactly what to do. If, after reading the following
information, you feel you still need more information, please
contact your gas supplier.
LP-GAS WARNING ODOR
If a gas leak happens, you should be able to smell the gas because of the odorant put in the LP-Gas.
That's your signal to go into immediate action!
• Do not operate electric switches, light matches, use your
phone. Do not do anything that could ignite the gas.
• Get everyone out of the building, vehicle, trailer, or area. Do
that IMMEDIATELY.
• Close all gas tank or cylinder supply valves.
• LP-Gas is heavier than air and may settle in low areas such
as basements. When you have reason to suspect a gas leak,
keep out of basements and other low areas. Stay out until
reghters declare them to be safe.
• Use your neighbor's phone and call a trained LP-Gas service
person and the re department. Even though you may not
continue to smell gas, do not turn on the gas again. Do not
re-enter the building, vehicle, trailer, or area.
• Finally, let the service man and reghters check for escaped
gas. Have them air out the area before you return. Properly
trained LP-Gas service people should repair the leak, then
check and relight the gas appliance for you.
NO ODOR DETECTED - ODOR FADE
Some people cannot smell well. Some people cannot smell the
odor of the chemical put into the gas. You must nd out if you
can smell the odorant in propane. Smoking can decrease your
ability to smell. Being around an odor for a time can affect your
sensitivity or ability to detect that odor. Sometimes other odors in
the area mask the gas odor. People may not smell the gas odor
or their minds are on something else. Thinking about smelling a
gas odor can make it easier to smell.
The odorant in LP-gas is colorless, and it can fade under
some circumstances. For example, if there is an underground
leak, the movement of the gas through soil can lter the odorant.
Odorants in LP-Gas also are subject to oxidation. This fading can
occur if there is rust inside the storage tank or in iron gas pipes.
The odorant in escaped gas can adsorb or absorb onto or into
walls, masonry and other materials and fabrics in a room. That will
take some of the odorant out of the gas, reducing its odor intensity.
LP-Gas may stratify in a closed area, and the odor intensity could
vary at different levels. Since it is heavier than air, there may be
more odor at lower levels. Always be sensitive to the slightest gas
odor. If you detect any odor, treat it as a serious leak. Immediately
go into action as instructed earlier.
• Learn to recognize the odor of LP-gas. Your local LP-Gas
Dealer can give you a "Scratch and Sniff" pamphlet. Use it to
nd out what the propane odor smells like. If you suspect that
your LP-Gas has a weak or abnormal odor, call your LP-Gas
Dealer.
• If you are not qualied, do not light pilot lights, perform
service, or make adjustments to appliances on the LP-Gas
system. If you are qualied, consciously think about the
odor of LP-Gas prior to and while lighting pilot lights or performing service or making adjustments.
• Sometimes a basement or a closed-up house has a musty
smell that can cover up the LP-Gas odor. Do not try to light
pilot lights, perform service, or make adjustments in an area
where the conditions are such that you may not detect the
odor if there has been a leak of LP-Gas.
• Odor fade, due to oxidation by rust or adsorption on walls of
new cylinders and tanks, is possible. Therefore, people should
be particularly alert and careful when new tanks or cylinders
are placed in service. Odor fade can occur in new tanks, or
reinstalled old tanks, if they are lled and allowed to set too
long before relling. Cylinders and tanks which have been
out of service for a time may develop internal rust which will
28091-8-0814Page 5
SOME POINTS TO REMEMBER
cause odor fade. If such conditions are suspected to exist,
a periodic sniff test of the gas is advisable. If you have any
question about the gas odor, call your LP-gas dealer. A
periodic sniff test of the LP-gas is a good safety measure
under any condition.
• If, at any time, you do not smell the LP-Gas odorant and you
think you should, assume you have a leak. Then take the same
immediate action recommended above for the occasion when
you do detect the odorized LP-Gas.
• If you experience a complete "gas out," (the container is
under no vapor pressure), turn the tank valve off immediately.
If the container valve is left on, the container may draw in
some air through openings such as pilot light orices. If this
occurs, some new internal rusting could occur. If the valve is
left open, then treat the container as a new tank. Always be
sure your container is under vapor pressure by turning it off
at the container before it goes completely empty or having it
relled before it is completely empty.
IMPORTANT SAFETY INFORMATION
DANGER: Indicates a hazardous situation which, if not avoided, will
result in death or serious injury.
WARNING: Indicates a hazardous situation which, if not avoided,
could result in death or serious injury.
CAUTION: Indicates a hazardous situation which, if not avoided,
could result in minor or moderate injury.
NOTICE: Addresses practices not related to personal injury.
• An unvented room heater having an input rating of more than
6,000 Btu per hour shall not be installed in a bathroom
• An unvented room heater having an input rating of more than 10,000
Btu per hour shall not be installed in a bedroom or bathroom.
• Due to high temperatures, the appliance should be located out of
trafc and away from furniture and draperies.
• Children and adults should be alerted to the hazard of high surface
temperature and should stay away to avoid burns or clothing
ignition.
• Young children should be carefully supervised when they are in
the same room with the appliance.
• Do not place clothing or other ammable material on or near the
appliance.
• Avoid the use of scented air fresheners (plug in type air
fresheners, etc. ) while the log set is in operation. Air fresheners
produce a residue in the air similar to candles and may produce
a soot like substance.
• Avoid the use of scented or decorative candles while the log
set is in operation. Candles produce a residue in the air that
creates a soot like substance. Burning candles while the log
set is operating magnies the problem. It should be noted that
candles, in general, produce soot. The amount of time burned
and the quantity of candles burned will determine the amount
of soot produced and deposited.
• Installation and repair should be done by a QUALIFIED SERVICE
PERSON. This appliance should be inspected before use and at
least annually by a professional service person. More frequent
cleaning may be required due to excessive lint from carpeting,
bedding materials, etc. It is imperative that control compartments,
burners and circulating air passageways of the appliance be
kept clean.
• DO NOT use this room heater if any part has been under water.
Immediately call a qualied service technician to inspect the
room heater and to replace any part of the control system and
any gas control which has been under water.
• You must operate heater with replace screen in place.
• Do not place trash, logs or other articles on the log set during
operation.
• During manufacturing, fabricating and shipping, various
components of this appliance are treated with certain oils, lms
or bonding agents. These bonding agents are not harmful but
may produce annoying smoke and smells as they are burned
off during initial operation of the appliance. This is a normal
temporary occurrence. A window should be opened during the
initial bake out period.
• Correct installation of the ceramic ber logs, proper location of
the heater and annual cleaning are necessary to avoid potential
problems with sooting. Sooting, resulting from improper
installation or operation, can settle on surfaces outside the
replace. See instructions for proper installation.
• WARNING: Do not allow fans to blow directly into the
replace. Avoid any drafts that alter burner ame patterns.
• WARNING: Do not use a blower insert, heat exchanger insert
or other accessory not approved for use with this heater.
• WARNING! This replace needs fresh air for ventilation to
run properly. This replace has an ODS (oxygen depletion
sensor) which will shut down the heater if adequate fresh air is
not available. See troubleshooting section in the instructions.
• WARNING: DO NOT operate this appliance unless all
components including logs, burners, and controls are in good
working condition. Never operate this appliance if any log or
twig is broken, or out of their intended position. Refer to the
Log set placement instructions for correct log and twig
positioning.
Replacement components are available through your local
dealer as indicated in the How to Order Repair Parts section of
the appliance manual.
• Keep appliance area clear and free from combustible materials,
gasoline and other ammable vapors and liquids.
• WARNING: Failure to keep the primary air opening(s) of the
burner(s) clean may result in sooting and property damage.
WARNING
When used without adequate combustion and ventilation air,
heater may give off CARBON MONOXIDE, an odorless, poison-
ous gas.
Do not install heater until all necessary provisions are
made for combustion and ventilation air. Consult the written instructions provided with the heater for information
concerning combustion and ventilation air. In the absence
of instructions, refer to the National Fuel Gas Code, ANSI
Z223.1/NFPA 54, Air for Combustion and Ventilation, or
applicable local codes.
This heater is equipped with a PILOT LIGHT SAFETY SYSTEM designed to turn off the heater if not enough fresh air
is available.
DO NOT TAMPER WITH PILOT LIGHT SAFETY SYSTEM!
If heater shuts off, do not relight until you provide fresh air.
If heater keeps shutting off, have it serviced. Keep burner and
control compartment clean.
CARBON MONOXIDE POISONING MAY LEAD TO DEATH.
Early signs of carbon monoxide poisoning resemble the u,
with headache, dizziness and/or nausea. If you have these
signs, heater may not be working properly. Get fresh air at
once! Have heater serviced.
Some people — pregnant women, persons with heart or lung
disease, anemia, those under the inuence of alcohol , those
at high altitudes — are more affected by carbon monoxide
than others.
The pilot light safety system senses the depletion of oxygen
at its location. If this heater is installed in a structure having a
high vertical dimension, the possibility exists that the oxygen
supply at the higher levels will be less than that at the heater.
In this type of application, a fan to circulate the structure air will
minimize this effect. The use of this fan will also improve the
comfort level in the structure. When a fan is used to circulate
air, it should be located so that the air ow is not directed at
the burner.
28091-8-0814Page 6
REQUIREMENTS FOR CANADA
This unit cannot be installed in an UNVENTED application, this
unit can only be installed as a VENTED application with these
requirements.
IMPORTANT SAFETY INFORMATION
This unit complies with ANSI Z21.60and CGA 2.26 Decorative
Gas Appliances For Installation In Solid Fuel Burning Fireplaces.
Do not burn wood or solid fuels in a replace where a decorative
gas log set is installed. This appliance is for installation only in
a solid fuel burning replace, masonry replace or manufactured
replace.
Warning: Any modication to this gas log set or to controls
can be dangerous. Improper installation or use of the gas log set
can cause serious injury or death from re, burns, explosion or
carbon monoxide poisoning.
1. Please follow all local codes regarding installation, combustion and ventilation air or in the absence of local codes follow
the National Fuel Gas Code ANSI Z223.1(U.S. installation), or
CAN/CGA-B149, Installation Code (Canada installation).
2. Proper installation, burner pan location and log placement is
important to achieve optimum look and performance of your
gas log set. The logs have been designed for easy location
and placement on the grate and the log placement instructions must be followed for proper operation.
3. Do not operate this log set with glass doors in the closed po-
sition. A replace screen must be in place when the log set
is burning. Adequate combustion air must be provided for
proper venting. All ames should go up and out the top of the
rebox into the ue vent. If any ames oat or curl forward
into the room do not operate appliance. Check for an open
ue and adequate combustion air into the room. A damper
clamp must be installed on the rebox damper to maintain an
open ue vent condition. Refer to replace owners manual
INSTALLING DAMPER CLAMP section.
4. Young children must be carefully supervised when they are in
the same room as the gas log while in operation. Do not place
stockings, clothing or any ammable material above or near
the replace.
5. Do not substitute or use materials other than those supplied
for use with the log set.
6. Also refer to IMPORTANT SAFETY INFORMATION in the
replace Owner's Manual.
WARNING; DO NOT OPERATE THIS GAS LOG SET WITH
GLASS DOORS CLOSED
• Clothing or other ammable material should not be placed on
or near the appliance.
• Do not place trash or other articles on the log set during operation.
• During manufacturing, fabricating and shipping, various com-
ponents of this appliance are treated with certain oils, lms or
bonding agents. These bonding agents are not harmful but
may produce annoying smoke and smells as they are burned
off during initial operation of the appliance. This is a normal
temporary occurrence. A window should be opened during the
initial bake out period.
• Keep burner and control compartment clean.
• WARNING: Before installing in a solid fuel burning re-
place, the chimney ue and rebox must be cleaned of soot,
creosote, ashes and loose paint by a qualied chimney clean-
er.
• Installation and repair should be done by a qualied service
person. The appliance should be inspected before use and
at least annually by a qualied service person. More frequent
cleaning may be required due to excessive lint from carpeting, bedding materials, hair from pets, etc. It is imperative that
control compartments, burners and circulating air passageways of the appliance be kept clean.
• Do not put anything around the replace that will obstruct the
ow of ventilation air.
• Do keep the appliance area clear and free from combustible
material, gasoline and other ammable vapors and liquids.
• A yearly examination and cleaning of the venting system of
the solid-fuel burning replace must be performed by a qualied agency.
• Do make a periodic visual check of pilot and burners. Clean
and replace damaged parts.
• Do not use this appliance if any part has been under water.
Immediately call a qualied service technician to inspect the
appliance and to replace any part of the control system and
any gas control which has been under water.
• Never burn solid fuels in replace where a gas log set is installed.
• This unit complies with ANSI Z21.60 Decorative Vented Appliances for Solid Fuel Burning Fireplaces. State or local codes
may only allow operation of this appliance in a vented conguration. Check your regional or local codes.
28091-8-0814Page 7
INTRODUCTION
IMPORTANT: Read all instructions carefully before starting
installation. Failure to follow these installation instructions
may result in a possible re hazard and will void the warranty.
Save this manual for future reference.
Please read this manual before installing and using the
appliance.
Instructions to Installer
1. Installer must leave instruction manual with owner after
installation.
2. Installer must have owner ll out and mail warranty card supplied
with unvented room heater/vented decorative appliance.
3. Installer should show owner how to start and operate unvented
room heater/vented decorative appliance.
Always consult your local Building Department regarding regulations,
codes or ordinances which apply to the installation of an unvented
room heater/vented decorative appliance.
This appliance may be installed in an aftermarket* manufactured
(mobile) home, where not prohibited by state or local codes.
*Aftermarket: Completion of sale, not for purpose of resale, from
the manufacturer.
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.
New Installation
VFSN Model - variable does not operate-ON is OFF/OFF is ONwires into the back of receiver are reversed.
Solid-fuels shall not be burned in a replace where a vented decorative
appliance is installed.
A vented decorative appliance must be installed only in a
solid-fuel burning replace with a working ue and constructed of
non-combustible material.
Any alteration of the original design, installed other than as
shown in these instructions or use with a type of gas not
shown on the rating plate is the responsibility of the person
and company making the change.
Important
All correspondence should refer to complete Model Number, Serial
Number and type of gas.
Attention: During initial use of log you will detect an odor as
the log is cured.
Notice: During initial ring of this unit, its paint will bake out, and
smoke will occur. To prevent triggering of smoke alarms, ventilate
the room in which the unit is installed.
WARNING
This appliance is for installation only in a solid-fuel burning
masonry or factory-built replace or in a listed ventless
rebox enclosure. It has been design certied for these
installations. Exception: DO NOT install this appliance in
a factory-built replace that includes instructions stating
it has not been tested or should not be used with unvented
gas logs.
WARNING
Any modication to this unvented gas heater or its controls
can be dangerous. Improper installation or use of the heater
can cause serious injury or death from re, burns, explosion
or carbon monoxide poisoning.
Well Head Gas Installations
Some natural gas utilities use "well head" gas. This may affect the
Btu output of the unit. Contact the gas company for the heating value.
Contact the manufacturer or your gas company before changing
spud/orice size.
ACCESSORIES
DescriptionColor
For use with VFN(R,I) AND VFX(V,I) models
EK-1Embers Kit
ELH-1Fireplace Hood for Vent-Free LogsBlack
ELH-2Fireplace Hood for Vent-Free LogsBrass
DCG-24-BLDecorative Cast GrateBlack
For use with VFNR models only
FRBCBattery Operated Remote Control
FRBTCBattery Operated Remote Control with Thermo-
stat
FRECElectric Remote Control
FWSWall Switch
TMV Wall Thermostat, Millivolt - Reed Switch
Notice: Thermostats are for Vent-Free Applications only.
ModelGasValve TypeBTUH Max. RateBTUH Med. RateBTUH Min. Rate
VFXV-24NaturalVariable38,000-27,000
VFXV-24PropaneVariable38,000-28,000
VFNR-24NaturalMillivolt38,000-27,000
VFNR-24PropaneMillivolt38,000-28,000
VFNI-24NaturalIntermittent38,000-27,000
VFNI-24PropaneIntermittent38,000-28,000
VFXI-24NaturalIntermittent38,000-26,000
VFXI-24PropaneIntermittent38,000-26,000
VFXV-30NaturalVariable40,000-29,000
VFXV-30PropaneVariable40,000-30,000
VFNR-30NaturalMillivolt40,000-29,000
VFNR-30PropaneMillivolt40,000-30,000
VFNI-30NaturalIntermittent40,000-30,000
VFNI-30PropaneIntermittent40,000-30,000
VFXI-30NaturalIntermittent40,000-30,000
VFXI-30PropaneIntermittent40,000-30,000
Notice: Thermostats are for Vent-Free Applications only.
28091-8-0814Page 9
GENERAL INFORMATION
This is an unvented gas-red heater. It uses air (oxygen) from the
room in which it is installed. Provisions for adequate combustion
and ventilation air must be provided.
Keep room area clear and free from combustible materials, gasoline
and other ammable vapors and liquids.
Unvented gas heaters are a supplemental zone heater. They are not
intended to be a primary heating appliance. Water vapor produced
by an unvented heater can create moisture problems in a home
when operated for extended periods of time.
During manufacturing, fabricating and shipping, various components
of this appliance are treated with certain oils, lms or bonding agents.
These chemicals are not harmful but may produce annoying smoke
and smells as they are burned off during the initial operation of the
appliance; possibly causing headaches or eye or lung irritation. This
is a normal and temporary occurrence.
The initial break-in operation should last 2-3 hours with the burner
at the highest setting. Provide maximum ventilation by opening
windows or doors to allow odors to dissipate. Any odors remaining
after this initial break-in period will be slight and will disappear with
continued use.
This appliance must not be used with glass doors in the closed
position. This can lead to pilot outages and severe sooting outside
the replace.
Do not use this room heater if any part has been under water.
Immediately call a qualied service technician to inspect the room
heater and replace any part of the control system and any gas
control which has been under water.
WARNING
This appliance is equipped for (natural or propane)
gas. Field conversion is not permitted.
Before you get started
Carefully inspect the contents for shipping damage. If any parts are
missing or damaged, immediately inform the dealer from whom you
purchased the appliance. Do not attempt to install any part of the
appliance unless you have all parts in good condition.
Make sure you have received all parts:
Check your packing list to verify that all listed parts have been
received. You should have the following:
• Gas log grate/burner assembly.
• Two (2) masonry anchoring screws and two (2) 10 x 1/2" black
sheet metal anchoring screws.
• Plastic bag containing glowing embers (rock wool) for burner
coverage.
• Plastic bag containing lava rock.
• Switch log assembly - VFNR models
• Remote kit - VFNI, VFXI, VFXV models
Millivolt controlled heater designed to be operated with optional
devices for ON/OFF functions.
• Wall switch or thermostat with wire.
• Hand held remote control with ON/OFF switch or thermostat.
Handle the gas log burner assembly by the grate and legs only.
Do not pick the unit up by the burner.
Gloves are recommended when handling logs to prevent skin
irritation. Logs are fragile - Handle with care.
Qualied Installing Agency
Installation and replacement of gas piping, gas utilization equipment or accessories and repair and servicing of equipment shall be
performed only by a qualied agency. The term "qualied agency"
means any individual, rm, corporation, or company that either in
person or through a representative is engaged in and is responsible for (a) the installation, testing, or replacement of gas piping
or (b) the connection, installation, testing, repair, or servicing of
equipment; that is experienced in such work; that is familiar with all
precautions required, and that has complied with all the
requirements of the authority having jurisdiction.
State of Massachusetts: The installation must be made
by a licensed plumber or gas tter in the Commonwealth of
Massachusetts.
Sellers of unvented propane or natural gas-red supplemental
room heaters shall provide to each purchaser a copy of 527
CMR-30 upon sale of the unit.
The installation must conform with local codes or, in the absence
of local codes, with the National Fuel Gas Code, ANSI Z223.1.*
*Available from the American National Standards Institute, Inc. 11
West 42nd St., New York, N.Y. 10018.
High Altitudes: For altitudes/elevation above 2,000 feet ratings
should be reduced at the rate of 4 percent for each 1,000 feet above
sea level. Contact the manufacturer.
WATER VAPOR: A BY-PRODUCT OF UNVENTED ROOM HEATERS
Water vapor is a by-product of gas combustion. An unvented room
heater produces approximately one (1) ounce (30ml) of water for
every 1,000 BTU's (.3KW's) of gas input per hour.
Unvented room heaters must be used as supplemental heat
(a room) rather than a primary heat source (an entire house). In most
supplemental heat applications, the water vapor does not create a
problem. In most applications, the water vapor enhances the low
humidity atmosphere experienced during cold weather.
The following steps will help insure that water vapor does not
become a problem.
1. Be sure the heater is sized properly for the application, including
ample combustion air and circulation air.
2. If high humidity is experienced, a dehumidier may be used to
help lower the water vapor content of the air.
3. Do not use an unvented room heater as the primary heat source
(an entire house).
28091-8-0814Page 10
PROVISIONS FOR ADEQUATE COMBUSTION & VENTILATION AIR
This heater shall not be installed in a conned space unless provisions
are provided for adequate combustion and ventilation air.
A conned space is an area with volume less than 50 cubic feet per 1,000
Btuh of the combined input rates of all appliances drawing combustion
air from that space. Small areas such as equipment rooms are conned
spaces. Furnaces installed in a conned space which supply heated air
to areas outside the space must draw return air from outside the space
through tightly sealed return air ducts. A conned space must have 2
openings into the space for combustion air. One opening must be within
12 inches of the ceiling and the other must be within 12 inches of the
oor. The required sizing of these openings is determined by whether
inside or outside air is used to support combustion, the method by which
the air is brought to the space (vertical or horizontal duct) and by the
total input rate of all appliances in the space.
Unusually Tight Construction
The air that leaks around doors and windows may provide enough fresh
air for combustion and ventilation. However, in buildings of unusually
tight construction, you must provide additional fresh air.
Unusually tight construction is dened as construction where:
a. Walls and ceilings exposed to the outside atmosphere have a
continuous water vapor retarder with a rating of one perm or
less with openings gasketed or sealed, and
b. Weatherstripping has been added on openable windows and
doors, and
c. Caulking or sealants are applied to areas such as joints around
window and door frames, between sole plates and oors, between wall-ceiling joints, between wall panels, at penetrations for
plumbing, electrical, and gas lines, and at other openings.
If your home meets all of the three criteria above, you must provide
additional fresh air.
WARNING
If the area in which the heater may be operated is smaller
than that dened as an unconned space or if the building is of
unusually tight construction, provide adequate combustion and
ventilation air by one of the methods described in the National
Fuel Gas Code, ANSI Z223.1/NFPA 54, Air for Combustion and
Ventilation, or applicable local codes.
DIVIDER
FIREPLACE
H
L
W
Example of Large Room with 1/2 Wall divider.
Figure 1
The following formula can be used to determine the maximum heater
rating per the denition of unconned space:
Btu/Hr =
If the area in which the heater may be operated is smaller than that dened
as an unconned space, provide adequate combustion and ventilation
air by one of the methods described in the National Fuel Gas Code,
ANSI Z223.1, NFPA54.
Adhere to all codes, or in their absence, the latest edition of THE
NATIONAL FUEL GAS CODE ANSI Z223.1/NFPA54 which can be
obtained from:
American National Standards Institute National Fire Protection Association, Inc.
11 West 42nd St. Batterymarch Park
New York, NY 10018 Quincy, MA 02269
(L1 + L2)FT x (W)FT x (H)FT
1
50
L
2
x 1000
Minimum Dimensions For Solid Fuel Burning Fireplaces UL127
Factory Built Fireplaces (Figure 2)
ModelABCD
VFNI-2424"14"30"18"
VFNR-2424"14"30"18"
VFXI-2424"16"30"18"
VFXV-2424"16"30"18"
VFNI-3027"14"34"18"
VFNR-3027"14"34"18"
VFXI-3027"16"34"18"
VFXV-3027"16"34"18"
The dimensions shown and dened in the replace manufacturer’s
instructions are minimum clearances to maintain in installing this
heater. Left and right clearances are determined when facing the
front of the heater.
28091-8-0814Page 11
CLEARANCES
Glass Doors
Make sure that glass doors are open during all operations of
the logset. The opening of the glass door frame should be the
dimension used for the minimum front opening of the rebox.
Follow these instructions to ensure safe installation.
Failure to follow instructions exactly can create a re hazard.
Figure 2
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