Desa FVFM27NR-PR User Manual

TM

UNVENTED (VENT-FREE) GAS LOG HEATER

Also Design-Certified As A Vented Decorative Appliance

OWNER’S OPERATION AND INSTALLATION MANUAL

FLAME-MAX

®

Multi-Sided
Log Design

VYM27NR/PR

FVFM27NR/PR

Remote Control

Ready Model

WARNING: If the information in this manual
is not followed exactly, a fire or explosion
may result causing property damage, per­sonal injury, or loss of life.

— 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 per-

formed by a qualified installer, service
agency, or the gas supplier.

HI

O

F

F

E

T

O

M

E

R

F

F

O

N

O

P

I

T

L

O

L

O

Patent Pending

WARNING: Improper installation, ad­justment, alteration, service, or main­tenance can cause injury or property
damage. Refer to this manual for cor­rect installation and operational proce­dures. For assistance or additional in­formation consult a qualified installer,
service agency, or the gas supplier.

WARNING: This appliance is for installa­tion only in a solid-fuel burning masonry
or UL127 factory-built fireplace, or in an
approved ventless firebox. It is design
certified for these installations in accor­dance with ANSI Z21.11.2. Exception: Do
not install this appliance in a factory­built 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-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

Air for Combustion and Ventilation

section on page 4 of this manual.

This appliance may be installed in an aftermarket,* 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

Save this manual for future reference.

FLAME-MAX

®

UNVENTED GAS LOG HEATER

SAFETY
INFORMATION

WARNINGS

WARNING ICON G 001

IMPORTANT: Read this owner’s
manual carefully and completely
before trying to assemble, 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 flu,
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 influence of
alcohol, and those at high altitudes.

Natural and Propane/LP Gas: Natural and

propane/LP gases are fuel gases. Fuel gases
are odorless. An odor-making agent are
added to fuel gases. The odor helps you
detect a fuel gas leak. However, the odor
added to fuel gas can fade. Fuel 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 allow fans
to blow directly into the fireplace.
Avoid any drafts that alter burner
flame patterns. Ceiling fans can
create drafts that alter burner
flame patterns. Altered burner
patterns can cause sooting.

WARNING: Do not use a
blower insert, heat exchanger
insert, or other accessory not ap­proved for use with this heater.

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. 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 chil­dren 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.

You must operate this heater with
a fireplace screen in place. Make
sure fireplace screen is closed
before running heater.

Keep the appliance area clear and
free from combustible materials,
gasoline, and other flammable
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.

3. T o prevent performance problems, the
use of a propane/LP tank of less than
100 lbs. capacity is not recommended.

4. 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 fire department

5. 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 10).

6. 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. Creosote will ignite
if highly heated. Inspect chimney flue
for damage. If damaged, operate heater
with flue damper closed.

7. If fireplace has glass doors, never op­erate this heater with glass doors closed.
If you operate heater with doors closed,
heat buildup inside fireplace will cause
glass to burst. Also if fireplace open­ing has vents at the bottom, you must
open the vents before operating heater.

8. This log heater is designed to be smoke­less. If logs ever appear to smoke, turn off
heater and call a qualified service person.

Note:

During initial operation, slight
smoking could occur due to log curing and
heater burning manufacturing residues.

9. T o prevent the creation of soot, follow
the instructions in Cleaning and Main-
tenance, page 17.

10. 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.

11. 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, pages 4 through 6. If
heater keeps shutting off, see Trouble-
shooting, pages 18 through 20.

12. Do not run heater

• where flammable liquids or vapors

are used or stored

• under dusty conditions

For more information, visit www.desatech.com

2

108382

OWNER’S MANUAL

SAFETY
INFORMATION

Continued

16. Turn heater off and let cool before ser­vicing, installing, or repairing. Make sure
the selector switch is in the OFF posi­tion. Only a qualified service person
should install, service, or repair heater.

13. Do not use this heater to cook food or
burn paper or other objects.

14. Do not use heater if any part has been
exposed to or under water. Immediately
call a qualified 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.

15. Do not operate heater if any log is bro­ken. Do not operate heater if a log is

17. Make sure the selector switch is in the
OFF position when you are away from
home for long periods of time.

18. This heater must not be connected to
any external electrical source.

19. Operating heater above elevations of
4,500 feet could cause pilot outage.

20. Provide adequate clearances around air
openings.

chipped (dime-sized or larger).

PRODUCT IDENTIFICATION

Log Set

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,
dancing yellow flames. This heater is de­signed for vent-free operation with flue 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 prod­uct (ANSI Z21.60) by opening flue damper
(non-thermostat operation only).

APPLICATION

These multisided logs are designed to be
equally beautiful when viewed from any angle.

They are designed specifically for use in
see-through, peninsula, and island fireboxes
with multiple openings. You may also in­stall this log heater in a standard firebox.

Piezo

Ignitor
Optional
Remote
Control

C
O

O

L
E

R
A
U

T

O

O

N

O

F
F

W

A
R

M

E
R

T
E

M

P

Optional
Selector
Switch

Flame
Adjustment
Knob

Figure 1 - Product Identification

LOCAL CODES

Install and use heater with care. Follow all
local codes. In the absence of local codes, use
the latest edition of The National Fuel Gas
Code, ANSI Z223.1/NFPA 54*.

*Available from:
American National Standards Institute, Inc.

1430 Broadway

New York, NY 10018

National Fire Protection Association, Inc.

Batterymarch Park

Quincy, MA 02269

Note:

Where listed vented decorative logs
are required, thermostat operation is not
permitted.

Base Assembly

Control Knob

UNPACKING

CAUTION: Do not remove the
metal data plates from the grate
assembly. The data plates contain
important product information.

1. Remove logs and heater base assem­bly from carton.
heater base assembly by the burner.
This could damage heater. Always
handle base assembly by grate.

2. Remove all protective packaging ap­plied to logs and heater for shipment.

3. Check all items for any shipping dam­age. If damaged, promptly inform
dealer where you bought heater.

Note:

Do not pick up

SAFETY PILOT

This heater has a pilot with an Oxygen Deple­tion Sensing (ODS) safety shutoff system.
The ODS/pilot is a required feature for vent­free room heaters. The ODS/pilot shuts off
the heater if there is not enough fresh air.

PIEZO IGNITION SYSTEM

This heater has a piezo ignitor. This system
requires no matches, batteries, or other
sources to light heater.

REMOTE CONTROL
ACCESSORIES

There are four optional remote controls that
can be purchased separately for this log heater:

• wall switch

• wall thermostat

• hand-held ON/OFF remote

• hand-held thermostat remote
See Accessories, page 24.

NOTE:

thermostat may not be used where vented
decorative listing is required.

The wall thermostat or hand-held

108382

3

For more information, visit www.desatech.com

FLAME-MAX

®

UNVENTED GAS LOG HEATER

AIR FOR
COMBUSTION AND
VENTILATION

WARNING: This heater shall
not be installed in a confined 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 effi­cient 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
efficient, 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, fireplaces, 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 fuel­burning 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 classifications:

1. Unusually Tight Construction

2. Unconfined Space

3. Confined Space
The information on pages 4 through 6 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 de­fined as construction where:

a. walls and ceilings exposed to the

outside atmosphere have a con­tinuous water vapor retarder with
a rating of one perm (6x10
per pa-sec-m2) or less with open­ings gasketed or sealed

b. weather stripping has been

added on openable windows and
doors

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 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

From Outdoors

If your home does not meet all of the
three criteria above, proceed to

termining Fresh-Air Flow For Heater
Location

and

Ventilation Air

, page 6.

, page 5.

and

-11

kg

De-

Confined and Unconfined Space

The National Fuel Gas Code, ANSI Z223.1/
NFPA 54 defines a confined 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 uncon­fined 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
unconfined space.

* Adjoining rooms are communicating only
if there are doorless passageways or ventila­tion grills between them.

For more information, visit www.desatech.com

4

108382

OWNER’S MANUAL

AIR FOR
COMBUSTION AND
VENTILATION

Continued

DETERMINING FRESH-AIR FLOW FOR HEATER LOCATION

Determining if You Have a Confined or Unconfined Space

Use this work sheet to determine if you have a confined or unconfined space.
Space: Includes the room in which you will install heater plus any adjoining rooms with doorless passageways or ventilation grills between

the rooms.

1. Determine the volume of the space (length x width x height).
Length x Width x Height = _____________ cu. ft. (volume of space)

Example:

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 = (maximum Btu/Hr the space can support)

Example:

3. Add the Btu/Hr of all fuel burning appliances in the space.
Vent-free heater _____________ Btu/Hr

Gas water heater* _____________ Btu/Hr
Gas furnace _____________ Btu/Hr
Vented gas heater _____________ Btu/Hr
Gas fireplace logs _____________ Btu/Hr
Other gas appliances* + _____________ Btu/Hr
Total = _____________ Btu/Hr

* Do not include direct-vent gas appliances. Direct-vent draws combustion air from the outdoors and vents to the outdoors.

4. Compare the maximum Btu/Hr the space can support with the actual amount of Btu/Hr used.

____________Btu/Hr (maximum the space can support)
____________Btu/Hr (actual amount of Btu/Hr used)

Example:

The space in the above example is a confined 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 adjoining room. If the extra space provides an unconfined space, remove door to adjoin-

ing room or add ventilation grills between rooms. See Ventilation Air From Inside Building, page 6.

B. Vent room directly to the outdoors. See Ventilation Air From Outdoors, page 6.
C. Install a lower Btu/Hr heater, if lower Btu/Hr size makes room unconfined.

If the actual Btu/Hr used is less than the maximum Btu/Hr the space can support, the space is an unconfined space. You will need no
additional fresh air ventilation.

Space size 20 ft. (length) x 16 ft. (width) x 8 ft. (ceiling height) = 2560 cu. ft. (volume of space)

2560 cu. ft. (volume of space) x 20 = 51,200 (maximum Btu/Hr the space can support)

Example:

Gas water heater 40,000 Btu/Hr
Vent-free heater + 33,000 Btu/Hr
Total = 73,000 Btu/Hr

51,200 Btu/Hr (maximum the space can support)
73,000 Btu/Hr (actual amount of Btu/Hr used)

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

108382

National Fuel Gas Code, ANSI Z223.1/NFPA 54, Section 5.3

5

For more information, visit www.desatech.com

or applicable local codes.

Continued

FLAME-MAX

®

UNVENTED GAS LOG HEATER

AIR FOR
COMBUSTION AND
VENTILATION

Continued

VENTILATION AIR

Ventilation Air From Inside
Building

This fresh air would come from an adjoining
unconfined space. When ventilating to an
adjoining unconfined space, you must pro­vide two permanent openings: one within
12" of the ceiling and one within 12" of the
floor 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.

Ventilation

Grills

Into Adjoining

Room,

Option 1

Or

Remove
Door into
Adjoining

Room,
Option

3

12"

12"

Ventilation Grills

Into Adjoining Room,

Option 2

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 floor. 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:

inlet or outlet air into attic if attic has a
thermostat-controlled power vent. Heated air
entering the attic will activate the power vent.

Do not provide openings for

Figure 2 - Ventilation Air from Inside Building

Outlet
Air

Ventilated
Attic

Outlet
Air

Inlet
Air

Inlet Air

Figure 3 - Ventilation Air from Outdoors

To Attic

To

Crawl

Space

Ventilated

Crawl Space

For more information, visit www.desatech.com

6

108382

OWNER’S MANUAL

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.

WARNING: A qualified ser­vice person must install heater.
Follow all local codes.

NOTICE: State or local codes may
only allow operation of this appli­ance in a vented configuration.
Check your state or local codes.

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. Creosote
will ignite if highly heated. A dirty
chimney flue may create and dis­tribute soot within the house. In­spect chimney flue for damage. If
damaged, operate heater with flue
damper closed.

WARNING: 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 heat­resistant sealant. Do not seal
chimney flue damper.

WARNING: Never install the

heater

• in a bedroom or bathroom un­less installed as a vented ap­pliance, see page 10

• in a recreational vehicle

• where curtains, furniture,

clothing, or other flammable
objects are less than 42 inches
from the front, top, or sides of
the heater

• in high traffic areas

• in windy or drafty areas

CAUTION: This heater cre­ates warm air currents. These
currents move heat to wall sur­faces 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 flu­ids, oil or kerosene lamps, etc.) in
the air exist, may discolor walls
or cause odors.

IMPORTANT:

ture to the air. Although this is beneficial,
installing heater in rooms without enough
ventilation air may cause mildew to form
from too much moisture. See Air for Com-
bustion and Ventilation, pages 4 through 6.

Vent-free heaters add mois-

CHECK GAS TYPE

Use only the correct type of gas (natural or
propane/LP). If your gas supply is not the
correct gas type, do not install heater. Call
dealer where you bought heater for proper
type heater.

INSTALLATION AND
CLEARANCES

(Vent-Free Operation Only)

WARNING: Maintain the mini­mum clearances. If you can, pro­vide greater clearances from
floor, ceiling, and adjoining wall.

MINIMUM FIREPLACE

CLEARANCE TO

COMBUSTIBLE MATERIALS

Log Size Side Wall Ceiling

27" 16" 42"

LOG SIZING REQUIREMENTS

Log Minimum Firebox
Size Height Depth Width

27" 17" 19" 32"

Carefully follow the instructions below. This
will ensure safe installation into a masonry,
UL127-listed manufactured fireplace, or
listed vent-free firebox.

Minimum Clearances For Side
Combustible Material, Side Wall,
and Ceiling

A. Clearances from the side of the fire-

place cabinet to any combustible ma­terial and wall should follow diagram
in Figure 4.

Example:

shelf, 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 fireplace cabinet
(see Figure 4).

Note:

a manufactured firebox, follow firebox
manufacturer’s instructions for minimum
clearances to combustible materials.

B. Clearances from the top of the fireplace

opening to the ceiling should not be less
than 42 inches.

*Minimum 16 inches from Side Wall

Figure 4 - Minimum Clearance for Com­bustible to Wall

The face of a mantel, book-

When installing your gas logs into

Example

*

108382

Continued

7

For more information, visit www.desatech.com

FLAME-MAX

®

UNVENTED GAS LOG HEATER

INSTALLATION

Continued

NOTICE: Manual control heaters
may be used as a vented product.
If so, you must always run heater
with chimney flue damper open.
If running heater with damper
open, noncombustible material
above fireplace opening is not
needed. Go to

Clamp Accessory for Vented Op­eration,

page 10.

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

information below.
You must have noncombustible material(s)

above both fireplace openings. Noncom­bustible materials (such as slate, marble,
tile, etc.) must be at least 1/2 inch 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 fireplace
hood accessory. See Figure 5 at right for
minimum clearances.

Installing Damper

IMPORTANT:

minimum clearances, you must operate
heater with chimney flue damper open. Go
to Installing Damper Clamp Accessory for
Vented Operation, page 10.

If Using Mantel

You must have noncombustible material(s)
above the fireplace opening. Noncombus­tible materials (such as slate, marble, tile,
etc.) must be at least 1/2 inch thick. With

Noncombustible Requirements for
Material Distance (A) Safe Installation

12" or more Noncombustible material OK.
Between 8" and 12" Install fireplace hood accessory (GA6050, GA6052

Less than 8" Noncombustible material must be extended to at

Heat Resistant
Material

If you cannot meet these

or GA6053, see

least 8". See
cannot extend material, you must operate heater
with flue damper open.

(A)

sheet metal, you must have noncombustible
material behind it. Noncombustible mate­rial must extend at least 8 inches up (for all
models). If noncombustible material is less
than 12", you must install the fireplace hood
accessory. Even if noncombustible material
is more than 12", you may need the hood
accessory to deflect heat away from your
mantel shelf. See Figure 5 and Figures 6 and
7, page 9, for minimum clearances.

Accessories

Between 8" and 12"

, page 24).

, above. If you

Figure 5 - Heat Resistant Material (Slate, Marble, Tile, etc.) Above Fireplace

For more information, visit www.desatech.com

8

108382

OWNER’S MANUAL

Hearth

5"
Min.

Combustible
Material

INSTALLATION

Continued

MANTEL CLEARANCES

In addition to meeting noncombustible ma­terial clearances, you must also meet re­quired clearances between fireplace open­ings and mantel shelf on each side of the
fireplace. If you do not meet the clearances
listed below, you will need a hood.

Determining Minimum Mantel
Clearance

If you meet minimum clearance between
mantel shelf and top of fireplace opening, a
hood is not required (see Figure 6).

Determining Minimum Mantel
Clearance When using a Hood

If minimum clearances in Figure 6 are not
met, you must have a hood. When using a
hood there are still certain minimum mantel
clearances required. Follow minimum clear­ances shown in Figure 7 when using hood.

NOTICE: Surface temperatures of
adjacent walls and mantels be­come hot during operation. Walls
and mantels above the firebox
may become hot to the touch. If
installed properly, these tempera­tures meet the requirement of the
national product standard. Fol­low all minimum clearances
shown in this manual.

NOTICE: If your installation does
not meet the minimum clearances
shown, you must do one of the
following:

• operate the logs only with the
flue damper open

• raise the mantel to an accept­able height

• remove the mantel

Mantel Shelf

18" 20" 22" 24"

Distances to
Underside of
Mantel

Minimum Non­Combustible
Material

10"
8"
6"

1

/2

"

2

(A)

12"

Minimum Non­Combustible
Material Height

Figure 6 - Minimum Mantel Clearances Without Using Hood

8"
Min.

Mantel Shelf

12" 15" 18"

Distances to
Underside of
Mantel

Minimum Non­Combustible
Material

12"
10"
8"
6"

1

/2

"

2

Hood

Hood (GA6050,

(GA6050, GA6052)

GA6052 or GA6053)

Figure 7 - Minimum Mantel Clearances When Using Hood

Underside of
Mantel Shelf

All minimum
distances are
in inches

Top of Fireplace
Opening

Underside of
Mantel Shelf

All minimum
distances are
in inches

20"

Top of Fireplace
Opening

FLOOR CLEARANCES

A. If installing appliance on the floor level,

you must maintain the minimum distance
of 14" to combustibles (see Figure 8).

B. If combustible materials are less than

14" to the fireplace, you must install
appliance at least 5" above the combus­tible flooring (see Figure 9).

108382

Combustible

14"
Min.

Non-Combustible Material

Material

Figure 8 - Minimum Fireplace Clearances
If Installed at Floor Level

9

For more information, visit www.desatech.com

Hearth

Combustible
Material

5”
Min.

Figure 9 - Minimum Fireplace Clearances
Above Combustible Flooring

Continued