Desa Tech CF26NTA, CF26PTA Owner's Manual
UNVENTED (VENT-FREE) BAY FRONT GAS LOG FIREPLACE
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OWNER’S OPERATION AND INSTALLATION MANUAL
Patent Pending
Fireplace Shown With
Optional Mantel
MODELS CF26PTA AND CF26NTA
19,000 TO 26,000 BTU/HR THERMOSTAT CONTROL
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
Local Codes......................................................... 4
Unpacking............................................................ 4
Product Identication ........................................... 5
Product Features ................................................. 5
Air For Combustion and Ventilation ..................... 5
Installation ........................................................... 8
Operating Fireplace ........................................... 19
Inspecting Burners ............................................ 20
Cleaning and Maintenance ................................ 21
SAFETY INFORMATION
Troubleshooting ................................................. 22
Specications .................................................... 26
Replacement Parts ............................................ 26
Parts Central...................................................... 26
Service Hints ..................................................... 27
Technical Service............................................... 27
Accessories ....................................................... 27
Illustrated Parts Breakdown and Parts List........ 28
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 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 5
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
State of Massachusetts: The installation
must be made by a licensed plumber or
gas tter in the Commonwealth 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.
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113896-01D
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.
WARNING: Do not allow fans
to blow directly into the replace.
Avoid any drafts that alter burner
ame patterns. Ceiling fans can
create drafts that alter burner
ame patterns. Altered burner
patterns can cause sooting.
IMPORTANT: Read this owner’s
manual carefully and completely
before trying to assemble, operate or service this replace.
Improper use of this replace
can cause serious injury or
death from burns, re, 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 the gas. 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.
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 in the replace or on logs.
Fireplace front and screen become very hot when running replace. Keep children and adults
away from hot surfaces to avoid
burns or clothing ignition. Fireplace will remain hot for a time
after shutdown. Allow surfaces
to cool before touching.
Carefully supervise young chil-
dren when they are in the room
with replace.
You must operate this replace
with a replace screen in place.
Make sure replace screen is
closed before running heater.
Keep the appliance area clear
and free from combustible materials, gasoline and other ammable vapors and liquids.
WARNING: Do not use a
blower insert, heat exchanger
insert or other accessory not approved for use with this heater.
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SAFETY INFORMATION
Continued
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 replace shall not be installed in a bed-
room or bathroom.
5. Do not use this replace as a wood-burning
replace. Use only the logs provided with the
replace.
6. Do not add extra logs or ornaments such as
pine cones, vermiculite or rock wool. Using
these added items can cause sooting. Do not
add lava rock around base. Rock and debris
could fall into the control area of replace.
7. This fireplace is designed to be smokeless.
If logs ever appear to smoke, turn off fireplace and call a qualified service person.
Note: During initial operation, slight smoking
could occur due to log curing and replace
burning manufacturing residues.
8. To prevent the creation of soot, follow the
instructions in Cleaning and Maintenance,
page 21.
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 replace needs fresh air ventilation to run
properly. This replace has an Oxygen Depletion Sensing (ODS) safety shutoff system. The
ODS shuts down the replace if not enough
fresh air is available. See Air for Combustion
and Ventilation, page 5. If replace keeps
shutting off, see Troubleshooting, page 22.
11. Do not run replace
• where ammable liquids or vapors are used
or stored.
• under dusty conditions.
12. Do not use this replace to cook food or to
burn paper or other solid fuels.
13. Do not use replace if any part has been under
water. Immediately call a qualied service
technician to inspect the room replace and
to replace any part of the control system and
any gas control which has been under water.
14. Turn off and unplug replace and let cool
before servicing. Only a qualied service
person should service and repair replace.
15. Operating replace above elevations of 4,500
feet could cause pilot outage.
16. Do not operate replace if any log is broken.
Do not operate replace if a log is chipped
(dime-sized or larger).
17. To prevent performance problems, do not use
propane/LP fuel tank of less than 100 lbs.
capacity (propane/LP units only).
18. Prov ide adeq ua te clearan ce s around air
openings.
LOCAL CODES
Install and use replace 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
UNPACkING
1. Remove replace from carton.
2. Remove all protective packaging applied to
replace for shipment.
3. Make sure your replace includes one hardware packet.
4. Check replace for any shipping damage. If
replace is damaged, promptly inform dealer
where you bought replace.
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113896-01D
PRODUCT
IDENTIFICATION
Fireplace
Cabinet
Brick
Liner
Logs
Heater Controls
(Inside Door)
Figure 1 - Vent-Free Propane/LP Gas
Compact Fireplace
Screen
PRODUCT FEATURES
SAFETY PILOT
This replace has a pilot with an Oxygen Depletion Sensing (ODS) safety shutoff system. The
ODS/pilot is a required feature for vent-free room
replaces. The ODS/pilot shuts off the replace if
there is not enough fresh air.
PIEzO IGNITION SYSTEM
This replace has a piezo ignitor. This system
requires no matches, batteries or other sources to
light replace.
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.
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 5 through 7 will help
you classify your space and provide adequate
ventilation.
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AIR FOR COMBUSTION
AND VENTILATION
Continued
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
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 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 7.
If your home does not meet all of the three
criteria above, proceed to Determining
Fresh-Air Flow For Fireplace Location.
Conned and Unconned Space
The National Fuel Gas Code, ANSI Z223.1 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 unconning
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
-11
kg per pa-sec-m2) or
DETERMINING FRESH-AIR FLOW
FOR FIREPLACE 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.
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) = 2560 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: 2560 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
56,000 Btu/Hr (actual amount of
Btu/Hr (maximum the space can support)
Btu/Hr (actual amount of Btu/Hr used)
can support)
Btu/Hr used)
30,000
26,000
56,000
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113896-01D
AIR FOR COMBUSTION
Or
Remove
Door into
Adjoining
Room,
Option
3
Ventilation Grills
Into Adjoining Room,
Option 2
Ventilation
Grills
Into Adjoining
Room,
Option 1
12"
12"
Outlet
Air
Ventilated
Attic
Outlet
A
ir
Inlet
Air
Inlet Air
Ventilated
Crawl Space
To Attic
To
Crawl
Space
AND VENTILATION
Continued
The space in the above example is a conned space
because the actual Btu/Hr used is more than the maxi-
mum 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.
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 un-
conned 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.
Figure 2 - Ventilation Air from Inside
Building Shown with Optional Mantel
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.
VENTILATION AIR
Ventilation Air From Inside Building
This fresh air would come from an adjoining un-
conned space. When ventilating to an adjoining
unconned space, you must provide two perma-
nent 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.
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Figure 3 - Ventilation Air from Outdoors
Shown with Optional Mantel
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 qualied service person must install replace. Follow all local codes.
Note: Your Comfort Glow replace is designed
to be used in zero clearance installations. Wall or
framing material can be placed directly against
any exterior surface of your fireplace, except
where standoff spacers are integrally attached.
If standoff spacers are attached to your replace,
these spacers can be placed directly against wall
or framing materials.
Use the dimensions shown for rough openings to
create the easiest installation (see Built-In Fire-
place Installation, page 9).
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 replace. Call dealer where you bought
replace for proper type replace.
WARNING: This appliance
is equipped for natural or propane/LP gas. Field conversion
is not permitted.
LOCATING FIREPLACE
WARNING: Maintain the
minimum clearances shown in
Figure 4 and 5, page 9. If you can,
provide greater clearances from
oor, ceiling and joining wall.
You can recess rebox into the wall. You can also
position replace in the optional cabinet mantels.
IMPORTANT: Only use optional cabinet mantels
specied in this manual. Purchase the optional mantel from your dealer (see Accessories, page 27).
WARNING: Never install the
replace
• in a bedroom or a bathroom
• in a recreational vehicle
• where curtains, f urni ture,
clothing or other ammable
objects are less than 42" from
the front, top or sides of the
replace
• as a replace insert
• in high trafc areas
• in windy or drafty areas
CAUTION: This replace cre-
ates warm air currents. These
currents move heat to wall sur-
faces next to replace. Installing
replace next to vinyl or cloth
wall coverings or operating
replace where impurities (such
as, but not limited to, tobacco
smoke, aromatic candles, clean-
ing uids, oil or kerosene lamps,
etc.) in the air exist, may discolor
walls or cause odors.
IMPORTANT: Vent-free replaces add moisture
to the air. Although this is benecial, installing replace in rooms without enough ventilation air may
cause mildew to form from too much moisture. See
Air for Combustion and Ventilation, page 5.
CAUTION: If you install the
replace in a home garage
• replace pilot and burner must
be at least 18" above oor.
• locate replace where moving
vehicle will not hit it.
For convenience and efciency, install replace
• where there is easy access for operation, inspection and service.
• in coldest part of room.
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INSTALLATION
36
5
/
8
"
25
7
/
8
"
51
3
/
4
"
26
7
/
8
"
26
7
/
8
"
26
7
/
8
"
3/4" Off
The Floo
r
Minimum
10
1
/
2
"
Continued
An optional blower kit is available from your
dealer. See Accessories, page 27. If planning to use
blower, locate replace near an electrical outlet.
Note: When installing replace directly on carpeting, tile or other combustible material, other than
wood ooring, the replace shall be installed on a
metal or wood panel extending the full width and
depth of the replace.
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 opening (see Figure 4).
B. Clearances from the top of the replace opening
to the ceiling should not be less than 42".
Example
*
1. Frame in rough opening. Use dimensions shown
in Figure 5 for the rough opening.
If installing in a corner, use dimensions shown
in Figure 6 for the rough opening. The height
is 26 1/8" which is the same as the wall opening
above.
2. An optional blower accessory is available (see
Accessories, page 27). There are two options
for connecting blower to electrical source.
Option one: Have a licensed electrician install
a properly grounded, three-prong 120-volt
electrical outlet at replace location. Locate
outlet inside the framed enclosure. Blower
power cord will plug into this outlet.
Option two: Have a licensed electrician con-
nect blower to electrical source at junction box
inside replace.
If using option one, have electrical outlet in-
stalled at this time. If using option two, do not
connect blower to electrical source at junction
box until step 6.
3. Install gas piping to replace location. This
installation includes an approved exible gas
line (if allowed by local codes) after the equipment shutoff valve. The exible gas line must
be the last item installed on the gas piping.
4. Carefully set replace in front of rough opening
with back of replace inside wall opening.
5. Attach exible gas line to replace gas regula-
tor. See Connecting Fireplace to Gas Supply,
page 16.
*Minimum 16" from Side Wall
Figure 4 - Minimum Clearance for
Combustible to Wall
BUILT-IN FIREPLACE
INSTALLATION
Built-in installation of this replace involves installing replace into a framed-in enclosure. This
makes the front of replace ush with wall. Follow
the instructions below to install the replace in this
manner. If installing a built-in mantel above the
replace, you must follow the clearances shown
in Figure 8, page 11.
Actual Framing
Height 26" 26 7/8"
Front Width 26 3/4" 26 7/8"
Depth 9 1/2" 10 1/2"
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Figure 5 - Rough Opening for Installing
in Wall
Figure 6 - Rough Opening for Installing
in Corner
INSTALLATION
Continued
6. If the optional blower has been installed connect blower to electrical source.
Option one: Route blower electrical cord
through side or rear access door of replace.
Plug electrical cord into electrical outlet.
Option two: Have a licensed electrician con-
nect blower to electrical source at junction box
inside replace.
7. Bend four nailing anges on outer casing with
pliers (see Figure 7).
8. Attach fireplace to wall studs using nails
or wood screws through holes in nailing
ange.
9. Check all gas connections for leaks. See
Checking Gas Connections, page 17.
IMPORTANT: When finishing your firebox,
combustible materials such as wall board, gypsum board, sheet rock, drywall, plywood, etc.
may be butted up next to the sides and top of
the rebox. Combustible materials should never
overlap the rebox front facing. Firebox should
not be placed on top of carpet or other kinds of
brous material.
WARNING: Do not allow any
combustible materials to overlap
the rebox front facing.
IMPORTANT: Noncombustible materials such as
brick, tile, etc. may overlap the front facing, but
should never cover any necessary openings like
louvered slots.
WARNING: Do not allow non-
combustible materials to cover
any necessary openings like
louvered slots.
WARNING: Never modify or
cover the louvered slots on the
front of the rebox.
Nails or Wood
Screws
Nailing
Flanges
Figure 7 - Attaching Fireplace to Wall
Studs
Mantel Clearances for Built-In Installation
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.
If placing mantel above built-in replace, you must
meet minimum clearance between mantel shelf and
top of replace opening.
NOTICE: If your installation does
not meet the minimum clearances shown, you must do one
of the following:
• raise the mantel to an acceptable height
• remove the mantel
WARNING: Use only non-
combustible mortar or adhesives when overlapping the front
facing with noncombustible
facing material.
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113896-01D
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