Desa VF-24N-BTB User Manual
UNVENTED (VENT-FREE) GAS LOG HEATER
OWNER’S OPERATION AND INSTALLATION MANUAL
VF-18N-PDG, VF-18P-PDG
VF-24N-PDG, VF-24P-PDG
VF-18N-BTB, VF-18P-BTB
VF-24N-BTB, VF-24P-BTB
WARNING: If the information in this manual is not fol-
lowed exactly, a re or explosion may result causing
property damage, personal injury or loss of life.
— Do not store or use gasoline or other ammable
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 re
department.
— Installation and service must be performed by a quali-
ed installer, service agency or the gas supplier.
INSTALLER: Leave this manual with the appliance
CONSUMER: Retain this manual for future reference.
For more information, visit www.desatech.com
TABLE OF CONTENTS
Safety Information ............................................... 2
Product Identication ........................................... 5
Local Codes......................................................... 5
Unpacking............................................................ 5
Product Features ................................................. 5
Optional Remote Control Accessories ................. 5
Air For Combustion and Ventilation ..................... 6
Installation ........................................................... 8
Operating Heater ............................................... 15
Inspecting Burners ............................................ 18
SAFETy INFORMATION
Cleaning and Maintenance ................................ 19
Troubleshooting ................................................. 20
Specications .................................................... 24
Wiring Diagram .................................................. 24
Service Hints ..................................................... 24
Technical Service............................................... 24
Replacement Parts ............................................ 24
Accessories ....................................................... 25
Illustrated Parts Breakdown and Parts List........ 26
Warranty Information ...........................Back Cover
WARNING: Improper installation, adjustment, al-
teration, service or maintenance can cause in-
jury or property damage.
Refer to this manual for
correct installation and
operational procedures.
For assistance or additional information con-
sult a qualied installer,
service agency or the gas
supplier.
WARNING: This appliance
is for installation only in a
solid-fuel burning masonry or UL127 factory-built
replace or in a listed ventless rebox enclosure. It is
design-certied for these
installations in accordance
with ANSI Z21.11.2. 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: 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. Refer to Air
for Combustion and Ventilation section on page 6
of this manual.
This appliance may be in-
stalled in an aftermarket,*
per man ent ly loc ate d,
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.
* Aftermarket: Completion of sale, not for
purpose of resale, from the manufacturer
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111826-01G2
SAFETy INFORMATION
Continued
WARNING: This product con-
tains and/or generates chemicals
known to the State of California
to cause cancer or birth defects
or other reproductive harm.
IMPORTANT: Read this owner’s
manual carefully and completely
be fore tr ying to assemb le,
operate or service this heater.
Improper use of this heater can
cause serious injury or death
from burns, fire, explosion,
electrical shock and carbon
monoxide poisoning.
DANGER: Carbon monoxide
poisoning may lead to death!
Carbon Monoxide Poisoning: Early signs of carbon
monoxide poisoning resemble the u, with headaches, dizziness or nausea. If you have these signs,
the heater may not be working properly. Get fresh
air at once! Have heater serviced. Some people
are more affected by carbon monoxide than others.
These include pregnant women, people with heart
or lung disease or anemia, those under the inuence
of alcohol and those at high altitudes.
Natural and Propane/LP Gas: Natural and pro-
pane/LP gases are odorless. An odor-making
agent is added to these gases. The odor helps you
detect a gas leak. However, the odor added to the
gas can fade. Gas may be present even though no
odor exists.
Make certain you read and understand all warnings. Keep this manual for reference. It is your
guide to safe and proper operation of this heater.
WARNING: Any change to
this heater or its controls can
be dangerous.
WARNING: Do not use a
blower insert, heat exchanger
insert or other accessory not approved for use with this heater.
WARNING: Vent-free products
are prohibited for bedroom and
bathroom installation in the Commonwealth of Massachusets.
WARNING: Do not allow fans
to blow directly into the heater.
Avoid any drafts that alter burner
ame patterns. Ceiling fans can
create drafts that alter burner
ame patterns. Altered burner
patterns can cause sooting.
WARNING: Do not place
log scraps or lava rocks on
burner.
Due to high temperatures, the
appliance should be located out
of trafc and away from furniture
and draperies.
Do not place clothing or other
ammable material on or near
the appliance. Never place any
objects on the heater.
Heater base assembly becomes
very hot when running heater.
Keep children and adults away
from hot surface to avoid burns
or clothing ignition. Heater
will remain hot for a time after
shutdown. Allow surface to cool
before touching.
Carefully supervise young chil-
dren when they are in the room
with heater. When using the handheld remote accessory, keep selector switch in the OFF position
to prevent children from turning
on burners with remote.
111826-01G 3
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SAFETy INFORMATION
Continued
You must operate this heater
with a replace doors or screen
in place and fully closed. Unless provided by other means,
screens shall have openings for
introduction of combustion air.
Keep the appliance area clear
and free from combustible materials, gasoline and other ammable vapors and liquids.
1. This appliance is only for use with the type of
gas indicated on the rating plate. This appliance
is not convertible for use with other gases.
2. Do not place propane/LP supply tank(s) inside any structure. Locate propane/LP supply
tank(s) outdoors (propane/LP units only).
3. If you smell gas
• shut off gas supply
• do not try to light any appliance
• do not touch any electrical switch; do not use
any phone in your building
• immediately call your gas supplier from a
neighbor’s phone. Follow the gas supplier’s
instructions
• if you cannot reach your gas supplier, call
the re department
4. This heater shall not be installed in a bedroom
or bathroom unless installed as a vented
appliance (see Installing Damper Clamp
Accessory for Vented Operation, page 11)
5.
Before installing in a solid fuel burning replace, the chimney ue and rebox must be
cleaned of soot, creosote, ashes and loose paint
by a qualied chimney cleaner. Creosote will
ignite if highly heated. A dirty chimney ue
may create an distribute soot within the house.
Inspect chimney ue for damage. If damaged,
repair ue before operating heater.
6. Do not burn solid fuel in a masonry or UL127
factory-built replace in which a vent-free
room heater is installed.
7.
If replace has glass doors, never operate this
heater with glass doors closed. If you operate
heater with doors closed, heat buildup inside
replace will cause glass to burst. Make sure
there are no obstructions across openings of
replace.
8. To prevent the creation of soot, follow the
instructions in Cleaning and Maintenance,
page 19.
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9. Before using furniture polish, wax, carpet
cleaner or similar products, turn heater off. If
heated, the vapors from these products may
create a white powder residue within burner
box or on adjacent walls or furniture.
10. This heater needs fresh, outside air ventilation to
run properly. This heater has an oxygen depletion sensing (ODS) pilot light safety system.
The ODS shuts down the heater if not enough
fresh air is available. See Air for Combustion
and Ventilation, page 6. If heater keeps shutting
off, see Troubleshooting, page 20.
11. Do not run heater
• where ammable liquids or vapors are used
or stored
• under dusty conditions
12. Do not use this heater to cook food or burn
aper or other objects.
13. Do not use heater if any part has been exposed
to or 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.
14. Do not operate heater if any log is broken. Do
not operate heater if a log is chipped (dimesized or larger).
15. Turn heater off and let cool before servicing or
repairing. Make sure the selector switch is in
the OFF position. Only a qualied service person should install, service or repair heater.
16. Make sure selector switch is in the OFF position when you are away from home for long
periods of time.
17. This heater does not need to be connected to
any external electrical source.
18. To prevent performance problems, do not
use propane/LP fuel tank of less than 100 lb.
capacity (propane/LP units only).
19. Prov ide adeq ua te clearan ce s around air
openings.
State of Massachusetts: The installa-
tion must be made by a licensed plumber
or gas fitt er in the Common we alth of
Massachusetts.
Sel lers 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.
Vent-free gas products are prohibited for
bedroom and bathroom installation in the
Commonwealth of Massachusetts.
111826-01G4
PRODUCT
IDENTIFICATION
Log Set
Assembly
Electronic
Ignitor
Control
Knob
Flame
Adjustment
Knob
Selector
Switch
Hand-Held
Remote Control
BTB Models
Remote
Receiver
Chassis
Assembly
UNPACkING
CAUTION: Do not remove the
data plates from the grate assembly. The data plates contain
important warranty and safety
information.
1. Re move log set asse mbl y from carton .
Note: Do not pick up assembly by logs. This
could damage heater. Always handle assembly
by grate.
2. Remove control cover oor media components.
3. Remove all protective packaging applied to
log set for shipment.
4. Check all items for any shipping damage. If
damaged, promptly inform dealer where you
bought heater.
Log Set
Assembly
Electronic
Ignitor
Control
Knob
Flame
Adjustment
Knob
Selector
Switch
Figure 1 - Product Identication
Chassis
Assembly
PDG Models
LOCAL CODES
Install and use heater with care. Follow all local
codes. In the absence of local codes, use the lat-
est edition of The National Fuel Gas Code ANSI
Z223.1/NFPA 54*.
*Available from:
American National Standards Institute, Inc.
National Fire Protection Association, Inc.
111826-01G 5
1430 Broadway
New York, NY 10018
Batterymarch Park
Quincy, MA 02269
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PRODUCT FEATURES
OPERATION
This heater is clean burning. It requires no outside
venting. There is no heat loss out a vent or up a
chimney. Heat is generated by realistic ames and
glowing ceramic logs/coals. This heater is designed
for vent-free operation with ue damper closed. It has
been tested and approved to ANSI Z21.11.2 standard
for unvented heaters. State and local codes in some
areas prohibit the use of vent-free heaters. This heater
may also be operated as a vented decorative (ANSI
Z21.60) product by opening the ue damper.
SAFETY DEVICE
This heater has a pilot with an Oxygen Depletion Sensing (ODS) safety shutoff system. The
ODS/pilot is a required feature for vent-free room
heaters. The ODS/pilot shuts off the heater if there
is not enough fresh air.
ELECTRONIC IGNITION SYSTEM
This system has an electronic ignitor. This system
requires no matches or other sources to light heater.
Receiver requires 4 AA batteries (included), handheld remote control requires a 12-volt battery and
a 3-volt button cell battery for the LCD display
(both included).
OPTIONAL REMOTE
CONTROL ACCESSORIES
There are two optional remote accessories available for the PDG models that come standard with
the BTB models:
• wall switch
• hand-held ON/OFF remote
See Accessories, page 25.
AIR FOR COMBUSTION
AND VENTILATION
WARNING: This heater shall
not be installed in a conned
space or unusually tight construction unless provisions are
provided for adequate combustion and ventilation air. Read the
following instructions to insure
proper fresh air for this and
other fuel-burning appliances
in your home.
Today’s homes are built more energy efcient
than ever. New materials, increased insulation and
new construction methods help reduce heat loss
in homes. Home owners weather strip and caulk
around windows and doors to keep the cold air out
and the warm air in. During heating months, home
owners want their homes as airtight as possible.
While it is good to make your home energy efcient,
your home needs to breathe. Fresh air must enter
your home. All fuel-burning appliances need fresh
air for proper combustion and ventilation.
Exhaust fans, replaces, clothes dryers and fuel
burning appliances draw air from the house to
operate. You must provide adequate fresh air for
these appliances. This will insure proper venting
of vented fuel-burning appliances.
PROVIDING ADEQUATE
VENTILATION
The following are excerpts from National Fuel
Gas Code, ANSI Z223.1/NFPA 54, Section 5.3,
Air for Combustion and Ventilation.
All spaces in homes fall into one of the three following ventilation classications:
1. Unusually Tight Construction
2. Unconned Space
3. Conned Space
The information on pages 6 through 8 will help
you classify your space and provide adequate
ventilation.
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 out-
side atmosphere have a continuous
water vapor retarder with a rating of one
perm (6 x 10
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 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.
See Ventilation Air From Outdoors, page 8.
If your home does not meet all of the three
criteria above, proceed to Determining
Fresh-Air Flow For Heater Location.
Conned and Unconned Space
The National Fuel Gas Code, ANSI Z223.1/NFPA
54 denes a conned space as a space whose
volume is less than 50 cubic feet per 1,000 Btu
per hour (4.8 m3 per kw) of the aggregate input
rating of all appliances installed in that space and
an unconned space as a space whose volume is
not less than 50 cubic feet per 1,000 Btu per hour
(4.8 m3 per kw) of the aggregate input rating of
all 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
unconned space.
* Adjoining rooms are communicating only if
there are doorless passageways or ventilation grills
between them.
-11
kg per pa-sec-m2) or less
DETERMINING FRESH-AIR FLOW
FOR HEATER LOCATION
Determining if You Have a Conned or
Unconned Space
Use this work sheet to determine if you have a
conned or unconned space.
Space: Includes the room in which you will install
heater plus any adjoining rooms with doorless passageways or ventilation grills between the rooms.
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111826-01G6
Or
Remove
Door into
Adjoining
Room,
Option
3
Ventilation Grills
Into Adjoining Room,
Option 2
Ventilation
Grills
Into Adjoining
Room,
Option 1
12"
12"
AIR FOR COMBUSTION
AND VENTILATION
Continued
1. Determine the volume of the space (length x
width x height).
Length x Width x Height =__________cu. ft.
(volume of space)
Example: Space size 20 ft. (length) x 16 ft.
(width) x 8 ft. (ceiling height) = 2,560 cu. ft.
(volume of space)
If additional ventilation to adjoining room is
supplied with grills or openings, add the volume
of these rooms to the total volume of the space.
2. Multiply the space volume by 20 to determine
the maximum Btu/Hr the space can support.
__________ (volume of space) x 20 = (Maxi-
mum Btu/Hr the space can support)
Example: 2,560 cu. ft. (volume of space) x 20 =
51,200 (maximum Btu/Hr the space can support)
3. Add the Btu/Hr of all fuel burning appliances in
the space.
Vent-free replace __________ Btu/Hr
Gas water heater* __________ Btu/Hr
Gas furnace __________ Btu/Hr
Vented gas heater __________ Btu/Hr
Gas replace logs __________ Btu/Hr
Other gas appliances* + __________ Btu/Hr
Total = __________ Btu/Hr
* Do not include direct-vent gas appliances. Di-
rect-vent draws combustion air from the outdoors
and vents to the outdoors.
Example:
Gas water heater __________ Btu/Hr
Vent-free replace + __________ Btu/Hr
Total = __________ Btu/Hr
4. Compare the maximum Btu/Hr the space can
support with the actual amount of Btu/Hr used.
_________
_________
Example: 51,200 Btu/Hr (maximum the space
73,000 Btu/Hr (actual amount of
The space in the example is a conned space because
the actual Btu/Hr used is more than the maximum
Btu/Hr the space can support. You must provide additional fresh air. Your options are as follows:
A. Rework worksheet, adding the space of an adjoin-
ing room. If the extra space provides an unconned
space, remove door to adjoining room or add
ventilation grills between rooms. See Ventilation
Air From Inside Building.
B. Vent room directly to the outdoors. See Ventila-
tion Air From Outdoors, page 8.
111826-01G 7
Btu/Hr (maximum the space can support)
Btu/Hr (actual amount of Btu/Hr used)
can support)
Btu/Hr used)
40,000
33,000
73,000
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C. Install a lower Btu/Hr replace, if lower Btu/Hr
size makes room unconned.
If the actual Btu/Hr used is less than the maximum
Btu/Hr the space can support, the space is an unconned space. You will need no additional fresh air
ventilation.
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 Section 5.3
or applicable local codes.
VENTILATION AIR
Ventilation Air From Inside Building
This fresh air would come from an adjoining unconned space. When ventilating to an adjoining
unconned space, you must provide two permanent
openings: one within 12" of the ceiling and one
within 12" of the oor on the wall connecting the
two spaces (see options 1 and 2, Figure 2). You
can also remove door into adjoining room (see
option 3, Figure 2). Follow the National Fuel Gas
Code, ANSI Z223.1/NFPA 54, Section 5.3, Air for
Combustion and Ventilation for required size of
ventilation grills or ducts.
Figure 2 - Ventilation Air from Inside
Building
Outlet
Air
Ventilated
Attic
Outlet
A
ir
Inlet
Air
Inlet Air
Ventilated
Crawl Space
To
Crawl
Space
To Attic
AIR FOR COMBUSTION
AND VENTILATION
Continued
Ventilation Air From Outdoors
Provide extra fresh air by using ventilation grills or
ducts. You must provide two permanent openings:
one within 12" of the ceiling and one within 12"
of the oor. Connect these items directly to the
outdoors or spaces open to the outdoors. These
spaces include attics and crawl spaces. Follow the
National Fuel Gas Code, ANSI Z223.1/NFPA 54,
Section 5.3, Air for Combustion and Ventilation for
required size of ventilation grills or ducts.
IMPORTANT: Do not provide openings for inlet
or outlet air into attic if attic has a thermostatcontrolled power vent. Heated air entering the attic
will activate the power vent.
Figure 3 - Ventilation Air from Outdoors
INSTALLATION
NOTICE: This heater is intended
for use as supplemental heat.
Use this heater along with your
primary heating system. Do not
install this heater as your primary heat source. If you have a
central heating system, you may
run system’s circulating blower
while using heater. This will help
circulate the heat throughout the
house. In the event of a power
outage, you can use this heater
as your primary heat source.
vice person must install heater.
Follow all local codes.
WARNING: A qualied ser-
NOTICE: State or local codes
may only allow operation of this
appliance in a vented conguration. Check your state or local
codes.
WARNING: Make sure the
selector switch is in the OFF position before installing heater.
WARNING: Before installing in
a solid fuel burning replace, the
chimney ue and rebox must be
cleaned of soot, creosote, ashes
and loose paint by a qualied chimney cleaner. Creosote will ignite
if highly heated. A dirty chimney
ue may create and distribute soot
within the house. Inspect chimney
and rebox ue for damage. If
damaged, repair ue and rebox
before operating heater.
WARNING: Seal any fresh
air vents or ash clean-out doors
located on oor or wall of replace. If not, drafting may cause
pilot outage or sooting. Use a
heat-resistant sealant. Do not
seal chimney ue damper.
WARNING: Never install the
heater
• in a bedroom or bathroom un-
less installed as a vented unit,
see page 11
• in a recreational vehicle
• where curtains, furniture, cloth-
ing or other ammable objects
are less than 42" from the front,
top or sides of the heater
• in high trafc areas
• in windy or drafty areas
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111826-01G8
INSTALLATION
Continued
CAUTION: This heater cre-
ates warm air currents. These
currents move heat to wall sur-
faces next to heater. Installing
heater next to vinyl or cloth wall
coverings or operating heater
where impurities (such as, but
not limited to, tobacco smoke,
aromatic candles, cleaning uids, oil or kerosene lamps, etc.) in
the air exist, may discolor walls
or cause odors.
IMPORTANT: Vent-free heaters add moisture to
the air. Although this is benecial, installing heater
in rooms without enough ventilation air may cause
mildew to form from too much moisture. See Air
for Combustion and Ventilation, page 6.
CHECK GAS TYPE
Use the correct gas type (natural or propane/LP)
for your unit. If your gas supply is not correct, do
not install heater. Call dealer where you bought
heater for proper type heater.
WARNING: This appliance
is equipped for (natural or propane/LP) gas. Field conversion
is not permitted.
INSTALLATION AND CLEARANCES
FOR VENT-FREE OPERATION
WARNING: Maintain the
minimum clearances. If you can,
provide greater clearances from
oor, ceiling and adjoining wall.
Minimum Fireplace Clearance to
Combustible Materials
Side Wall - 16", Ceiling - 42", Floor - 5"
LOG SIZING REQUIREMENTS
Minimum Firebox Size Center
Log Size Height Depth
18" 17" 14" 24" 20"
24" 17" 14" 28" 22"
*Measured at 14" depth
Carefully follow the instructions below. This will
ensure safe installation into a masonry, UL127listed manufactured replace or listed vent-free
rebox enclosure.
Minimum Clearances For Side
Combustible Material, Side Wall and
Ceiling
A. Clearances from the side of the fireplace
cabinet to any combustible material and wall
should follow diagram in Figure 4.
Example: The face of a mantel, bookshelf,
etc. is made of combustible material and
protrudes 3 1/2" from the wall. This combustible material must be 4" from the side of the
replace cabinet (see Figure 4).
Note: When installing your gas logs into
a man uf actur ed fireb ox , foll ow fir ebox
manufacturer’s instructions for minimum
clearances to combustible materials.
B.
Clearances from the top of the replace opening to the ceiling should not be less than 42".
Front
Width
Rear*
Width
NOTICE: Nonthermostat con-
trolled heaters may be used as a
vented product. If so, you must
always run heater with chimney
ue damper open. If running heater
with damper open, noncombustible material above fireplace
opening is not needed. Go to In-
stalling Damper Clamp Accessory
for Vented Operation, page 11.
Example
*
*Minimum 16 inches from Side Wall
Figure 4 - Minimum Clearance for
Combustible to Wall
111826-01G 9
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Minimum NonCombustible
Material
Minimum NonCombustible
Material Height
Distances to
Underside of
Mantel
Top of
Fireplace
Opening
Underside
of Mantel
Shelf
12"
8"
(A)
18"
14"
20"
17"
22"
19"
24"
20"
All minimum
distances are
in inches
Log Set
24" Models
18" Model
2
1
/2
"
6"
8"
10"
Mantel Shelf
INSTALLATION
Heat Resistant
Material
(A)
Minimum NonCombustible
Material
8"
Min.
12" 15" 18"
All minimum
distances are
in inches
Log Set
18" and 24"
Models
20"
2 1/2"
6"
8"
10"
12"
Distances to
Underside of
Mantel
Hood
(GA6050,
GA6052 or
GA6053)
Top of Fireplace
Opening
Underside of
Mantel Shelf
Mantel Shelf
Continued
Minimum Noncombustible Material
Clearances
If Not Using Mantel
Note: If using a mantel, proceed to If Using
Mantel. If not using a mantel, follow the informa-
tion below.
You must have noncombustible material(s) above
replace opening. Noncombustible materials (such
as slate, marble, tile, etc.) must be at least 1/2"
thick. With sheet metal, you must have noncombustible material behind it. Noncombustible material must extend at least 8" up (for all models). If
noncombustible material is less than 12", you must
install the replace hood accessory (24" models
only). See Figure 5 for minimum clearances.
Noncombustible Material
Distance (A)
12" or more Noncombustible material OK.
Between 8"
and 12"
Less than 8" Non comb u stib l e mate rial
Requirements for Safe
Installation
24" Model: Install replace
hood accessory (GA6050,
GA 6052 or GA605 3, see
Accessories, page 25). 18"
Model: Noncombustible material OK
must be extended to at least
8". See Between 8" and 12",
above. If you cannot extend
ma ter ial, you mu st op er-
ate heater with ue damper
open.
If Using Mantel
You must have noncombustible material(s) above
the replace opening. Noncombustible materials
(such as slate, marble, tile, etc.) must be at least
1/2" thick. With sheet metal, you must have noncombustible material behind it. Noncombustible
material must extend at least 8"up (for all models).
If noncombustible material is less than 12", you
must install the replace hood accessory. Even if
noncombustible material is more than 12", you
may need the hood accessory to deect heat away
from your mantel shelf (24" models only). See
Figures 5, 6 and 7 for minimum clearances.
IMPORTANT: If you cannot meet these minimum
clearances, you must operate heater with chimney
flue damper open. Go to Installing Dmanper
Clamp Accessory for Vented Operation, page 11.
Figure 6 - Minimum Mantel Clearances
Without Using Hood
Figure 5 - Heat Resistant Material (Slate,
Marble, Tile, etc.) Above Fireplace
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Figure 7 - Minimum Mantel Clearances
When Using Hood
111826-01G10
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