Empire Comfort Systems VFDR30LBP-1, VFDM30LBN-1, VFDT18LBN-1, VFDT18LBP-1, VFDR24LBP-1 User Manual
...
INSTALLATION INSTRUCTIONS
AND OWNER'S MANUAL
Vented/Vent-Free Burner and Logs
5 Log Set Shown
Installer: Leave this manual with the appliance.
Consumer: Retain this manual for future reference.
This appliance may be installed in an aftermarket
permanently located, manufactured (mobile) home,
where not prohibited by local codes.
UNVENTED GAS LOG HEATER OR
VENTED DECORATIVE APPLIANCE
MODELS
VFDR18LB10N-1 VFDR18LB10P-1
VFDR18LBN-1 VFDR18LBP-1
VFDR24LBN-1 VFDR24LBP-1
VFDR30LBN-1 VFDR30LBP-1
VFDT18LBN-1 VFDT18LBP-1
VFDT24LBN-1 VFDT24LBP-1
VFDT30LBN-1 VFDT30LBP-1
VFDM18LBN-1 VFDM18LBP-1
VFDM24LBN-1 VFDM24LBP-1
VFDM30LBN-1 VFDM30LBP-1
This appliance is only for use with the type of gas
indicated on the rating plate. This appliance is not
convertible for use with other gases.
WARNING: If the information in this manual are
not followed exactly, a fire or explosion may result
causing property damage, personal injury or loss
of life.
— Do not store or use gasoline or other flammable
vapors and liquids in the vicinity of this or any
other appliance.
— WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electrical switch; do not use
any phone in your building.
• Immediately call your gas supplier from a
neighbor’s phone. Follow the gas supplier’s
instructions.
• If you cannot reach your gas supplier, call the
fire department.
— Installation and service must be performed by a
qualified installer, service agency or the gas supplier.
EFFECTIVE DATE
JULY 2007
This is an unvented gas-fired heater. It uses air (oxygen) from the room in which it is installed. Provisions
for adequate combustion and ventilation air must be
provided. Refer to page 8.
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 UN-VENTED
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 6.
Page 123099-1-0707
TABLE OF CONTENTS
SECTION PAGE
Important Safety Information .................................................................................................3
Safety Information for Users of LP-Gas ................................................................................4
Introduction ............................................................................................................................5
Product Specifications ............................................................................................................
Water Vapor: A By-Product of Unvented Room Heaters .......................................................
General Information ...............................................................................................................7
Provisions for Adequate Combustion & Ventilation Air ........................................................
Clearances .......................................................................................................................... 8-9
Combustible Material ...........................................................................................................10
Fireplace Preparation ............................................................................................................10
Installing as a Vented Appliance ..........................................................................................11
Before Fully Installing the Appliance ..................................................................................11
Gas Supply ...........................................................................................................................12
VFD(R,T,M)(18,24) & VFDR18LB10 Log Placement (5 Log Set) ....................................
VDR(R,T,M)30 Log Placement (7 Log Set) ........................................................................
Operation Instructions/Flame Appearance ...........................................................................
Wiring - VFDR Models Only ...............................................................................................
VFDR(18,24,30)LB Lighting Instructions ...........................................................................17
VFDR18LB10(N,P) Lighting Instructions ...........................................................................18
VFDT(18,24,30)LB LIghting Instructions ...........................................................................19
VFDM(18,24,30)LB Lighting Instructions ..........................................................................20
Pilot Flame Characteristics ............................................................................................. 21-22
Cleaning and Servicing ........................................................................................................22
Troubleshooting ....................................................................................................................
How to Order Repair Parts ...................................................................................................24
VFDR Series Parts List ........................................................................................................24
VFDR Series Parts View ......................................................................................................
VFDR18LB10 Series Parts List ...........................................................................................26
VFDR18LB10 Series Parts View .........................................................................................
VFDT Series Parts List .........................................................................................................
VFDT Series Parts View ......................................................................................................
VFDM Series Parts List .......................................................................................................30
VFDM Series Parts View .....................................................................................................
Service Notes ........................................................................................................................32
6
6
8
13
14
15
16
23
25
27
28
39
31
Page 2 23099-1-0707
IMPORTANT SAFETY INFORMATION
• 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 bath
room.
• Never burn solid fuels in a fireplace where a gas log set is in
stalled.
• Due to high temperatures, the appliance should be located out of
traffic and away from furniture and draperies.
• Do not place clothing or other flammable material on or near the
appliance.
• Children and adults should be alerted to the hazards of high sur-
face temperature and should stay away to avoid burns or clothing
ignition.
• Young children should be carefully supervised when they are in
the same room as the appliance.
• This unit complies with ANSI Z21.11.2 Unvented Heaters and it
also 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 configuration. Check your
state or local codes.
• Correct installation of 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 fireplace.
• Avoid any drafts that could alter burner flame patterns. Do not
allow fans to blow directly into the fireplace. Do not place a blower
inside burn box area of firebox. Ceiling fans may create drafts that
alter burner flame patterns. Sooting and improper burning will
occur as a result of drafts.
• WARNING: Do not allow fans to blow directly into the fireplace.
Avoid any drafts that alter burner flame patterns.
• WARNING: Do not use a blower insert, heat exchanger insert or
other accessory not approved for use with this heater.
• Periodic examination and cleaning of the venting system of the
solid-fuel burning fireplace, including frequency of such examination
and cleaning, by a qualified agency.
• The installation must conform with local codes or, in the absence
of local codes, with the National Fuel Gas Code, ANSI Z223.1/
-
NFPA54.
• NOTE: Installation and repair should be done by a qualified service
-
person. The appliance 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. It is imperative that the control compartment, burners and
circulating air passageways of the appliance be kept clean.
• Any safety screen or guard removed for servicing an appliance must
be replaced prior to operating the appliance. Provide adequate
combustion and ventilation air.
• The flow of combustion and ventilation air MUST NOT be obstructed.
• Provide adequate clearances around air openings into the combus
tion chamber and adequate accessibility clearance for servicing
and proper operation. NEVER obstruct the front opening of the
appliance.
• An unvented room heater intended for installation in a solid-fuel
burning fireplace shall comply with the following instructions.
• A fireplace screen must be in place when the appliance is operating
and, unless other provisions for combustion air are provided, the
screen shall have an opening(s) for introduction of combustion
air.
• Solid-fuels shall not be burned in a masonry or UL 127 factory-built
fireplace in which an unvented room heater is installed.
• Any glass doors shall be fully opened when the appliance is in
operation.
• Any outside air ducts and/or ash dumps in the fireplace shall be
permanently closed at time of appliance installation.
• WARNING: Failure to keep the primary air opening(s) of the
burner(s) clean may result in sooting and property damage.
• WARNING: Before installing in a solid-fuel burning fireplace, the
chimney flue and firebox must be cleaned of soot, creosote, ashes
and loose paint by a qualified chimney cleaner.
-
WARNING
When used without adequate combustion and ventilation air, heater
may give off CARBON MONOXIDE, an odorless, poisonous 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, Section 5.3 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 flu, 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 influence 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 flow
is not directed at the burner.
Page 323099-1-0707
SAFETY INFORMATION FOR USERS OF LP-GAS
Propane (LP-Gas) is a flammable gas which can cause fires
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
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 firefighters
declare them to be safe.
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 find 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 filter the odorant. Odorants
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.
• Use your neighbor's phone and call a trained LP-Gas service
person and the fire department. Even though you may not con
tinue 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 firefighters 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.
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.
-
SOME POINTS TO REMEMBER
• Learn to recognize the odor of LP-gas. Your local LP-Gas
Dealer can give you a "Scratch and Sniff" pamphlet. Use it to
find 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 qualified, do not light pilot lights, perform service,
or make adjustments to appliances on the LP-Gas system. If
you are qualified, 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
Page 4 23099-1-0707
reinstalled old tanks, if they are filled and allowed to set too
long before refilling. Cylinders and tanks which have been out
of service for a time may develop internal rust which will 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
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 orifices. 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 refilled before it is com
pletely empty.
LP-gas dealer. A periodic sniff test of
-
INTRODUCTION
IMPORTANT: Read all instructions carefully before starting
installation. Failure to follow these installation instructions may
result in a possible fire 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 fill 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.
Solid-fuels shall not be burned in a fireplace where a vented
decorative appliance is installed.
A vented decorative appliance must be installed only in a solidfuel burning fireplace with a working flue and constructed of noncombustible 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 firing 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 solidfuel burning masonry or UL 127 factory-built fireplace or in a
listed ventless firebox enclosure. It has been design certified for
these installations. Exception: DO NOT install this appliance
in a factory-built fireplace that includes instructions stating
it has not been tested or should not be used with unvented
gas logs.
WARNING: Any modification 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 fire, 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/orifice size.
ACCESSORIES for VFDR, VFDT, & VFDM
Description Color
EK-1 Embers Kit
PE-20 Platinum Embers
ELH-1 Fireplace Hood for Vent-Free Logs Black
ELH-2 Fireplace Hood for Vent-Free Logs Brass
ACCESSORIES for VFDR ONLY
FRBC Battery Operated Remote Control
FRBTC Battery Operated Remote Control with Thermostat
FREC Electric Remote Control
FWS Wall Switch
TRW Remote Wall Thermostat
TMV Wall Thermostat, Millivolt - Reed Switch
Page 523099-1-0707
PRODUCT SPECIFICATIONS
Model Gas Valve Type
VFDR(18,24,30)LB
VFDR18LB10
VFDT(18,24,30)LB
VFDM(18,24,30)LB
Natural
Propane 10.0" W.C. 13.0" W.C. 11.0" W.C.
Natural
Propane 10.0" W.C. 13.0" W.C. 11.0" W.C.
Natural
Propane 10.0" W.C. 13.0" W.C. 11.0" W.C.
Natural
Propane 10.0" W.C. 13.0" W.C. 11.0" W.C.
Model BTU/hr.
VFDR18LB10N 10,000 N/A N/A
VFDR18LB10P 10,000 N/A N/A
VFDR18LBN 28,000 N/A 19,000
VFDR18LBP 28,000 N/A 22,000
VFDR24LBN 34,000 N/A 24,000
VFDR24LBP 34,000 N/A 26,000
VFDR30LBN 40,000 N/A 27,000
VFDR30LBP 40,000 N/A 31,000
VFDT18LBN 28,000 N/A 19,000
VFDT18LBP 28,000 N/A 22,000
VFDT24LBN 34,000 N/A 24,000
VFDT24LBP 34,000 N/A 26,000
VFDT30LBN 40,000 N/A 27,000
VFDT30LBP 40,000 N/A 31,000
VFDM18LBN 28,000 23,000 19,000
VFDM18LBP 28,000 25,000 22,000
VFDM24LBN 34,000 29,000 24,000
VFDM24LBP 34,000 30,000 26,000
VFDM30LBN 40,000 32,000 27,000
VFDM30LBP 40,000 36,000 31,000
Millivolt
Millivolt
Thermostat
Manual
Max. Rate
Regulator Pressure
Setting
3.5" W.C. 10.5" W.C. 4.5" W.C.
3.5" W.C. 10.5" W.C. 5.0" W.C.
6.0" W.C. 10.5" W.C. 7.0" W.C.
6.0" W.C. 10.5" W.C. 7.0" W.C.
BTU/hr.
Med. Rate
Gas Inlet Pressure
Max
BTU/hr.
Min. Rate
Gas Inlet Pressure
Minimum
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.
Page 6 23099-1-0707
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 dehumidifier 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).
GENERAL INFORMATION
This is an unvented gas-fired heater. It uses air (oxygen) from the
room in which it is installed. Provisions for adequate combustion
and ventilation air must be provided.
Keep room area clear and free from combustible materials, gasoline
and other flammable 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 manufacturin g, fabricating and shippi ng, various
components of this appliance are treated with certain oils, films 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 fireplace.
Do not use this room heater if any part has been under water.
Immediately call a qualified 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.
Qualified Installing Agency
Installation and replacement of gas piping, gas utilization equip
ment or accessories and repair and servicing of equipment shall be
performed only by a qualified agency. The term "qualified agency"
means any individual, firm, 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 fitter in the Commonwealth of
Massachusetts.
Sellers of unvented propane or natural gas-fired supplemental
room heaters shall provide to each purchaser a copy of 527
CMR-30 upon sale of the unit.
In the State of Massachusetts, unvented propane and natural
gas-fired space heaters shall be prohibited in bedrooms and
bathrooms.
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 Altitude
When installing this unit at an elevation above 2,000 feet (in the
United States), it may be necessary to decrease the input rating by
changing the existing burner orifice to a smaller size. Generally,
input should be reduced 4 percent for each 1,000 feet above sea
level. However, if the heating value of the gas has been reduced,
this general rule may not apply. Check with local gas utility for
proper orifice size identification.
-
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.
• Ceramic Log Set - (5 Piece on VFDR(18,24), VFDT(18,24)
and VFDM(18,24)) (7 Piece on VFDR30, VFDT30 and
VFDM30)
• Plastic bag containing glowing embers (rock wool) for burner
coverage.
The millivolt controlled heater may be operated with optional
devices for REMOTE/OFF/ON functions.
a. Wall switch or thermostat with wire.
b. 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.
Page 723099-1-0707
PROVISIONS FOR ADEQUATE COMBUSTION & VENTILATION AIR
This heater shall not be installed in a confined space unless provisions are
provided for adequate combustion and ventilation air.
The National Fuel Gas Code defines a confined space as a space whose
volume is less than 50 cubic feet per 1,000 Btu per hour (4.8m
the aggregate input rating of all appliances installed in that space and an
unconfined space as a space whose volume is not less than 50 cubic feet
per 1,000 Btu per hour (4.8 m
appliances installed in that space. Rooms communicating directly with the
space in which the appliances are installed, through openings not furnished
with doors, are considered a part of the unconfined 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 defined as construction where:
a. Walls and ceilings exposed to the outside atmosphere have a con
tinuous water vapor retarder with a rating of one perm or less with
openings gasketed or sealed, and
b. Weather-stripping has been added on openable windows and doors,
and
c. Caulking or sealants are applied to areas such as joints around
window and door frames, between sole plates and floors, between
wall-ceiling joints, between wall panels, at penetrations for plumb
ing, 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 defined as an unconfined 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, Section
5.3. or applicable local codes.
3
per kw) of the aggregate input rating of all
3
per kw) of
-
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 definition of unconfined space:
-
If the area in which the heater may be operated is smaller than that defined
as an unconfined space, provide adequate combustion and ventilation air
by one of the methods described in the National Fuel Gas Code, ANSI
Z223.1, Section 5.3.
Adhere to all codes, or in their absence, the latest edition of THE
NATIONAL FUEL GAS CODE ANSI Z223.1 or NFPA54 which can be
obtained from:
Btu/Hr =
(L1 + L2)FT x (W)FT x (H)FT
50
American National Standards Institute
11 West 42nd St.
New York, NY 10018
OR
National Fire Protection Association, Inc.
Batterymarch Park
Quincy, MA 02269
x 1000
CLEARANCES
Minimum Dimensions For Solid Fuel Burning Fireplaces
UL127 Factory Built Fireplaces (Figure 2)
Model A B C D
VFDR18LB10 17" 12" 28" 17"
VFD(R,T,M)18 17" 12" 28" 17"
VFD(R,T,M)24 23" 12" 30" 18"
VFD(R,T,M)30 26" 12" 34" 20"
The dimensions shown and defined in the fireplace 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.
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 firebox.
Follow these instructions to ensure safe installation.
Failure to follow instructions exactly can create a fire hazard.
Page 8 23099-1-0707
Figure 2
CLEARANCES (continued)
18”, 24”, 30” Log 41”
6”
28”
12”
HEATER
IN FIREPLACE
OR FIREBOX
HEA
T RESISTANT
MATERIAL
12” WITHOUT
HOOD
10” and less Mantel
13.5”
14.25”
15.0”
16.0”
HOOD
HEATER
IN
FIREPLACE
OR FIREBOX
HEAT RESISTANT
MATERIAL
8” WITH HOOD
8” Mantel
6” Mantel
4” Mantel
2” Mantel
Sidewall & Ceiling Clearances (Figure 3)
Figure 3
The sides of the fireplace opening must be 6" from any combustible
wall. The ceiling must be at least 41" (for 18", 24" and 30" logs)
from the fireplace opening.
Mantel Clearances Without Hood (Figure 4)
You must have non-combustible materials above the fireplace
opening. Non-combustible material must extend at least 12"
above fireplace opening. With sheet metal, you must have noncombustible material behind it.
Heat resistant materials such as slate and marble must be at least
1/2" thick. Sheet metal should not be installed onto combustible
material.
Non-Combustible
Material Distance
12" or more Non-combustible material
Less than 12" Non-combustible material must be extended
Requirements for Safe Installation
to at least 8" with the installation of the
optional fireplace hood. If you cannot extend
non-combustible material at least 8", you must
operate heater with flue damper open.
Mantel Clearances with Hood (Figure 5)
You must have non-combustible materials above the fireplace
opening. Non-combustible material must extend at least 8" above
fireplace opening. With sheet metal, you must have non-combustible
material behind it.
Heat resistant materials such as slate and marble must be at least
1/2" thick. Sheet metal should not be installed onto combustible
material.
Example: A mantel may project from the wall a maximum of 2" at
a minimum of 13-1/2" above the opening, and a maximum of 6"
at a minimum of 15" above the opening.
If your installation does not meet the above clearances, you must
proceed to one of the following steps:
• Use a hood.
• Operate the heater with flue damper open. See page 11 for Install-
• Raise the mantel to the proper height.
• Remove the mantel.
ing as a Vented Appliance.
Figure 4
Figure 5
If your installation does not meet the above minimum clearances,
you must proceed to one of the following steps:
• Operate the heater with the flue damper open. See page 11 for
Installing as a Vented Appliance.
• Raise the mantel to the proper height.
• Remove the mantel.
Floor Clearance (Figure 6)
If installing heater at floor level, the minimum distance to combustibles is “0” inches.
Figure 6
Page 923099-1-0707
COMBUSTIBLE MATERIAL
Do not attach combustible material to the mantel of your fireplace.
This is a fire hazard.
Figure 7
FIREPLACE PREPARATION
• Turn off gas supply to fireplace or firebox.
• Have the fireplace floor and chimney professionally cleaned to
remove ashes, soot, creosote or other obstructions.
Have this cleaning performed annually after installation.
• Seal any fresh air vents or ash clean-out doors located on floor
or wall of fireplace. If not, drafting may cause pilot outage or
sooting. Use a heat-resistant sealant. Do not seal chimney flue
damper.
Install and operate the appliance as directed in this manual.
FOR FACTORY BUILT FIREPLACES
FREE OPENING AREA OF CHIMNEY DAMPER FOR
VENTING COMBUSTION PRODUCTS FROM DECORA
TIVE APPLIANCES FOR INSTALLATION IN SOLID FUEL
BURNING FIREPLACES
Appliance Input Rate (BTU/hr)
20 30 40
Chimney
Height* (ft)
10 11.3 16.6 22.1
15 8.6 12.6 17.3
20 7.5 10.8 14.5
25 6.6 9.6 12.6
30 6.2 9.1 11.3
35 5.7 8.0 10.8
40 5.3 7.5 10.2
Minimum Opening** (sq. in.)
No greeting card, stockings or ornamentation of any type should be
placed on or attached to the fireplace. This is a heating appliance.
The flow of heat can ignite combustibles.
Figure 8
FOR MASONRY BUILT FIREPLACES
FREE OPENING AREA OF CHIMNEY DAMPER FOR
VENTING COMBUSTION PRODUCTS FROM DECORATIVE APPLIANCES FOR INSTALLATION IN SOLID FUEL
BURNING FIREPLACES
Appliance Input Rate (BTU/hr)
20 30 40
Minimum Opening** (sq. in.)
-
Chimney
Height* (ft)
6 17.6 25.7 33.8
8 16.5 23.7 31.2
10 15.1 21.7 28.7
15 14.1 19.9 26.1
20 12.9 18.5 23.7
30 12.2 16.9 21.6
* Height is from hearth to top of chimney and the minimum
height is 6 feet.
** Chart shows minimum opening (sq. in.) for given height and
input rate.
* Height is from hearth to top of chimney and the minimum
height is 10 feet.
** Chart shows minimum opening (sq. in.) for given height and
input rate.
Page 10 23099-1-0707
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