Desa H18NB Gas Logs Owner manual

Desa H18NB Gas Logs Owner manual
UNVENTED (VENT-FREE) GAS LOG HEATER
OWNER’S OPERATION AND INSTALLATION MANUAL
PFS
®
US
18" and 24" Variable Manually-Controlled
Models H18NB, H18PB, H24NB AND H24PB
Also Design-Certified as Vented Decorative Appliance
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 performed by a qualified 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................................................................... 2
Product Identification............................................ 4
Local Codes......................................................... 5
Unpacking............................................................ 5
Product Features.................................................. 5
Air For Combustion and Ventilation...................... 5
Installation............................................................ 8
Operation . ......................................................... 17
Inspecting Burners............................................. 19
Cleaning and Maintenance................................. 19
Troubleshooting.................................................. 21
Specifications..................................................... 25
Technical Service............................................... 25
Service Hints...................................................... 25
Replacement Parts............................................. 25
Parts................................................................... 26
Accessories........................................................ 28
Parts Central...................................................... 28
Warranty...............................................Back Cover
Safety
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
a listed ventless firebox
enclosure. It is design-certified 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.
2
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 5
of this manual.
This appliance may be installed in an aftermarket,*
permanently located,
manufactured (mobile)
home, where not prohibited by local codes.
This appliance is only for
use with the type of gas
indicated on the rating
plate. This appliance is
not convertible for use
with other gases.
* Aftermarket: Completion of sale, not for
purpose of resale, from the manufacturer
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124465-01A
SAFETY
Continued
WARNING: This product contains 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
before trying to assemble, operate or service this fireplace.
Improper use of this fireplace
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 fireplace may not
be working properly. Get fresh air at once!
Have fireplace 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 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 fireplace.
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.
124465-01A
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.
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.
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 type of
gas indicated on rating plate. This appliance is not convertible for use with other
gases.
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3
SAFETY
Continued
2. Do not place propane/LP supply tank(s)
inside any structure. Locate propane/LP
supply tank(s) outdoors (propane/LP
units only).
3. To prevent performance problems, the
use of a propane/LP tank of less than
100 lbs. capacity is not recommended
(propane/LP units only).
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 11). This gas log set may not be
installed as a vented appliance in a bedroom or bathroom in the Commonwealth
of Massachusetts.
6. Do not burn solid-fuel in a masonry or
UL127 factory-built fireplace in which a
vent-free room heater is installed.
7. 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 and firebox for damage. If damaged,
repair flue before operating heater.
8. 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. Make sure there are no obstructions
across openings of fireplace.
9. 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.
10. To prevent the creation of soot, follow
the instructions in Cleaning and Maintenance, page 18.
4
11. 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.
12. This heater needs fresh, outside air ventilation to run properly. This heater has an
Oxygen Depletion Sensing (ODS) safety
shutoff system. The ODS shuts down the
heater if not enough fresh air is available.
See Air for Combustion and Ventilation,
page 5. If heater keeps shutting off, see
Troubleshooting, page 20.
13. Do not run heater
• where flammable liquids or vapors are
used or stored
• under dusty conditions
14. Do not use this heater to cook food or burn
paper or other objects.
15. 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.
16. Do not operate heater if any log is broken.
Do not operate heater if a log is chipped
(dime-sized or larger).
17. Turn heater off and let cool before servicing. Only a qualified service person should
service and repair heater.
18. Operating heater above elevations of
4,500 feet could cause pilot outage.
19. Provide adequate clearances around air
openings.
Product
Identification
Grate
Heater Base
Control Knob
Figure 1 - Product Idetification
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124465-01A
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/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 models are not permitted.
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.
Vent-free gas products are prohibited for
bedroom and bathroom installation in the
Commonwealth of Massachusetts.
Unpacking
CAUTION: Do not remove the
data plates from the grate assembly. The data plates contain
important warranty and safety
information.
1. Remove log and heater base assembly
from carton.
Note: Do not pick up heater base assembly by burners. This could damage heater.
Always handle base assembly by grate.
2. Remove all protective packaging applied
to log and heater for shipment.
3. Check heater for any shipping damage. If
heater is damaged call DESA Heating, LLC
at 1-866-672-6040 for replacement parts
before returning to dealer.
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. Non-thermostat models may also
be operated as a vented decorative (ANSI
Z21.60) product by opening flue damper.
Safety Pilot
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.
Air For Combustion and Ventilation
WARNING: This heater shall
not be installed in a room or space
unless the required volume of indoor combustion air is provided
by the method described in the
National Fuel Gas Code, ANSI
Z223.1/NFPA 54, the International
Fuel Gas Code, or applicable local codes. Read the following instructions to insure proper fresh
air for this and other fuel-burning
appliances in your home.
124465-01A
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.
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5
AIR FOR COMBUSTION AND VENTILATION
Continued
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 fuel-burning appliances.
PROVIDING ADEQUATE
VENTILATION
The following are excerpts from National Fuel
Gas Code. ANSI Z223.1/NFPA 54, 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 5 through 7 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 (6x10-11 kg per pa-sec-m2) 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 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 Heater Location.
Confined Space 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
6
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.
DETERMINING FRESH-AIR FLOW
FOR FIREPLACE 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
fireplace 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) = 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 = (Maximum 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 fireplace __________ 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.
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124465-01A
AIR FOR COMBUSTION AND VENTILATION
Continued
Example:
40,000 Btu/Hr
Gas water heater __________
31,500 Btu/Hr
Vent-free fireplace +__________
Total
=__________
71,500 Btu/Hr
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: 51,200 Btu/Hr (maximum the
space can support)
71,500 Btu/Hr (actual amount of
Btu/Hr used)
The space in the 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 adjoining
room or add ventilation grills between rooms.
See Ventilation Air From Inside Building,
page 7.
B. Vent room directly to the outdoors. See
Ventilation Air From Outdoors, page 7.
C. Install a lower Btu/Hr fireplace, 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.
WARNING: If the area in which
the heater may be operated does
not meet the required volume for
indoor combustion air, combustion and ventilation air shall be
provided by one of the methods
described in the National Fuel
Gas Code, ANSI Z223.1/NFPA 54,
the International Fuel Gas Code,
or applicable local codes.
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, Air for Combustion and
Ventilation for required size of ventilation
grills or ducts.
12"
Ventilation
Grills Into
Adjoining
Room,
Option 1
Ventilation Grills
Into Adjoining Room,
Option 2
Or
Remove
Door into
Adjoining
Room,
Option
3
12"
Figure 2 - Ventilation Air from Inside
Building
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, 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 thermostat-controlled power vent. Heated air entering
the attic will activate the power vent.
Outlet
Air
Outlet
Air
Ventilated
Attic
To Attic
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
124465-01A
To
Crawl
Space
Inlet
Air
Inlet Air
Ventilated
Crawl Space
Figure 3 - Ventilation Air from Outdoors
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7
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: Never install the
heater
• in a bedroom or bathroom unless installed as a vented appliance (see page 11)
• in a recreational vehicle
• where curtains, furniture, clothing or other flammable objects
are less than 36" from front and
42" from top of heater; for side
clearances see Figure 4, page 9
• in high traffic areas
• in windy or drafty areas
WARNING: A qualified service person must install heater.
Follow all local codes.
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.
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 and firebox
for damage. If damaged, repair
flue before operating heater.
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
heat-resistant sealant. Do not
seal chimney flue damper.
8
Important: Vent-free heaters add moisture
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 Combustion and Ventilation, page 5.
CHECK GAS TYPE
Use only 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 either natural gas
or propane/LP gas but not both.
Gas type is indicated on the rating plate. Field conversion is not
permitted.
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124465-01A
INSTALLATION
Continued
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
Side Wall 16", Ceiling 42", Front 36"
Minimum Firebox Size
Height 17", Depth 14", Front Width 24",
Rear Width 20" (measured at 14" depth).
Carefully follow instructions below. This
will ensure safe installation into a masonry,
UL127-listed manufactured fireplace or certified vent-free firebox.
Minimum Clearances For Side
Combustible Material, Side Wall and
Ceiling
A. Clearances from side of 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 fireplace cabinet (see Figure 4).
Note: When installing your gas logs into
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".
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
Installing Damper Clamp Accessory
for Vented Operation, page 11.
Minimum Noncombustible Material
Clearances
If Not Using Mantel
Note: If using a mantel, proceed to If Using
Mantel, page 10. If not using a mantel, follow
the information below.
You must have noncombustible material(s)
above the fireplace 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. See Figure 5 for minimum clearances.
Noncombustible
Material
Requirements for
Distance (A)
Safe Installation
12" or more
Noncombustible material okay.
Between 8" and 12" Noncombustible material okay.
Less than 8"
Noncombustible material must
be extended to at least 8".
See Between 8" and 12",
above. If you cannot extend
material, you must operate
heater with flue damper open.
Heat Resistant
Material
Example
(A)
*
*Minimum 16" from Side Wall
Figure 4 - Minimum Clearance for
Combustible to Wall
124465-01A
Figure 5 - Heat Resistant Material (Slate,
Marble, Tile, etc.) Above Fireplace
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9
INSTALLATION
Continued
IMPORTANT: If you cannot meet these minimum clearances, you must operate heater
with chimney flue damper open. Go to Installing Damper Clamp Accessory for Vented
Operation, page 11.
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" thick. With sheet metal, you
must have noncombustible material behind it.
Noncombustible material must extend at least
8" up. See Figure 5, page 9, and Figure 6 for
minimum clearances.
IMPORTANT: If you cannot meet these minimum clearances, you must operate heater
with chimney flue damper open. Go to Installing Damper Clamp Accessory for Vented
Operation, page 11.
10"
8"
6"
2 1/2"
Mantel Shelf
Underside of
Mantel Shelf
All minimum
distances are
in inches
Minimum
Noncombustible
Material
(A)
8"
8" 14" 17" 20"
Log Set
All Models
Top of
Fireplace
Opening
Distances to
Minimum
Noncombustible Underside of
Material Height Mantel
Mantel Clearances
In addition to meeting noncombustible material clearances, you must also meet required
clearances between fireplace opening and
mantel shelf. If you do not meet the clearances
listed below, you will need a hood.
You must meet the minimum clearances
between the mantel shelf and the top of the
fireplace opening as shown in Figure 6.
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
Figure 6 - Minimum Mantel Clearances
Without Using Hood
10
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124465-01A
INSTALLATION
Continued
Floor Clearances
A. If installing appliance on floor level, you
must maintain the minimum distance of
14" to combustibles (see Figure 7).
B. If combustible materials are less than 14"
to fireplace, you must install appliance at
least 5" above combustible flooring (see
Figure 8).
Combustible
Material
14"
Min.
If reasons number 1 or 2 apply to you, you
must permanently open chimney flue damper.
You must install the damper clamp accessory
(to order, see Accessories, page 28). This
will insure vented operation (see Figure 9).
The damper clamp will keep damper open.
Installation instructions are included with
clamp accessory.
See chart below for minimum permanent flue
opening you must provide. Attach damper
clamp so the minimum permanent flue opening will be maintained at all times.
Chimney
Height
Minimum Permanent
Flue Opening
6' to 15'
15' to 30'
39 sq. inches
29 sq. inches
Noncombustible Material
Figure 7 - Minimum Fireplace Clearances
If Installed at Floor Level
Hearth
Area of Various Standard Round Flues
Diameter
Area
5"
6"
7"
8"
20 sq. inches
29 sq. inches
39 sq. inches
51 sq. inches
Combustible
Material
5"
Min.
Damper
Figure 8 - Minimum Fireplace Clearances
Above Combustible Flooring
Damper
Clamp
INSTALLING DAMPER CLAMP
ACCESSORY FOR VENTED
OPERATION
Note: When used as a vented heater, appliance must be installed only in a solid-fuel
burning fireplace with a working flue and
constructed of noncombustible material.
You may use this heater as a vented product.
There are three reasons for operating your
heater in the vented mode.
1. The fireplace does not meet the clearance to combustibles requirements for
vent-free operation.
2. State or local codes do not permit ventfree operation.
3. You prefer vented operation.
124465-01A
Damper
Damper
Masonry Fireplace
Manufactured
Fireplace
Figure 9 - Attaching Damper Clamp
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11
INSTALLATION
Continued
INSTALLING HEATER BASE
ASSEMBLY
CAUTION: Do not remove the
data plates attached to the heater
base assembly. The data plates
contain important warranty and
safety information.
WARNING: You must secure
this heater to fireplace floor. If
not, heater will move when you
adjust controls. Moving heater
may cause a gas leak.
WARNING: If installing in a
sunken fireplace, special care
is needed. You must raise the
fireplace floor to allow access to
heater control panel. This will insure adequate air flow and guard
against sooting and controls being damaged. Raise fireplace floor
with noncombustible material.
Make sure material is secure.
CAUTION: Do not pick up
heater base assembly by the
burner. This could damage heater. Only handle base assembly
by grates.
gas hose to gas regulator of heater (see
Figure 10).
IMPORTANT: Hold gas regulator with
wrench when connecting flexible gas hose.
2. Locate masonry screws in hardware
package.
3. Position heater base assembly in fireplace.
4. Place log in proper position on heater base
(see Installing Logs, page 15).
5. Center heater base and logs front-to-front
and side-to-side in fireplace.
6. Carefully remove log without moving
heater base.
7. Mark screw locations through holes in
mounting brackets (see Figure 11). If
installing in a brick-bottom fireplace, mark
screw locations in mortar joint of bricks.
8. Remove heater base from fireplace.
9. Drill holes at marked locations using 3/16"
drill bit.
10. Attach base assembly to fireplace floor
using two masonry screws (in hardware
package) (see Figure 11).
Fitting
Flexible Gas Hose
(if allowed by local codes)
Figure 10 - Attaching Flexible Gas Hose
to Heater Gas Regulator
Masonry
Screw
IMPORTANT: Make sure heater burners are
level. If heater is not level, heater will not
work properly.
Installation Items Needed
• hardware package (provided with heater)
• approved flexible gas hose (not provided)
(if allowed by local codes)
• sealant (resistant to propane/LP gas, not
provided)
• electric drill with 3/16" drill bit
• flathead screwdriver
1. Apply pipe joint sealant lightly to male
threads of the fitting to be threaded into
gas regulator. Connect approved flexible
12
Heater Gas
Regulator
Mounting
Bracket
Figure 11 - Attaching Base Assembly to
Fireplace Floor
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124465-01A
INSTALLATION
Continued
CONNECTING TO GAS SUPPLY
WARNING: This appliance
requires a 1/2" NPT (National
Pipe Thread) inlet connection to
the pressure regulator.
WARNING: A qualified
service person must connect
heater to gas supply. Follow
all local codes.
CAUTION: Never connect
propane/LP heater directly to the
propane/LP supply. Propane/LP
heaters require an external regulator (not supplied). Install the
external regulator between the
heater and propane/LP supply.
WARNING: For natural gas
units, never connect heater to
private (non-utility) gas wells.
This gas is commonly known
as wellhead gas.
Installation Items Needed
Before installing heater, make sure you have
the items listed below.
• external regulator (supplied by installer)
• piping (check local codes)
• sealant (resistant to propane/LP gas)
• equipment shutoff valve *
• test gauge connection *
• sediment trap
• tee joint
• pipe wrench
* A CSA design-certified equipment shutoff
valve with 1/8" NPT tap is an acceptable alternative to test gauge connection. Purchase
the optional CSA design-certified equipment
shutoff valve from your dealer.
For propane/LP gas, the installer must supply
an external regulator. An external regulator
will reduce incoming gas pressure. You must
reduce incoming gas pressure to between 11"
and 14" of water. If you do not reduce incoming
gas pressure, heater regulator damage could
occur. Install external regulator with vent pointing down as shown in Figure 12. Pointing vent
down protects it from freezing rain or sleet.
CAUTION: Use only new, black
iron or steel pipe. Internally-tinned
copper tubing may be used in
certain areas. Check your local
codes. Use pipe of 1/2" diameter or
greater to allow proper gas volume
to heater. If pipe is too small, undue
loss of volume will occur.
Installation must include an equipment shutoff
valve, union and plugged 1/8" NPT tap. Locate
NPT tap within reach for test gauge hook up.
NPT tap must be upstream from heater (see
Figure 13 page 14).
IMPORTANT: Install equipment shutoff valve
in an accessible location. Main gas valve is
for turning on or shutting off gas to the appliance.
Check your building codes for any special
requirements for locating equipment shutoff
valve to fireplaces.
Apply pipe joint sealant lightly to male NPT
threads. This will prevent excess sealant from
going into pipe. Excess sealant in pipe could
result in clogged heater valves.
WARNING: Use pipe joint
sealant that is resistant to liquid
petroleum (LP) gas.
Propane/LP
Supply Tank
External
Regulator
with Vent
Pointing
Down
Figure 12 - External Regulator With Vent
Pointing Down
124465-01A
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13
INSTALLATION
Continued
We recommend that you install sediment
trap in supply line as shown in Figure 13.
Locate sediment trap where it is within reach
for cleaning. Install in piping system between
fuel supply and heater. Locate sediment trap
where trapped matter is not likely to freeze.
A sediment trap traps moisture and contaminants. This keeps them from going into heater
controls. If sediment trap is not installed or is
installed wrong, heater may not run properly.
CAUTION: Avoid damage to
regulator. Hold gas regulator with
wrench when connecting it to gas
piping and/or fittings.
Natural
From Gas Meter
(5" W.C.** to
10.5" W.C.
Pressure)
CSA Design-Certified
Equipment Shutoff Valve
With 1/8" NPT Tap*
Propane/LP
From External
Regulator
3" Min.
(11" W.C.**
to 14" W.C.
Tee Cap Pipe
Pressure
Joint Nipple
Gas
Regulator
Approved
Flexible
Gas Hose (if
allowed by
local codes)
Sediment Trap
Figure 13 - Gas Connection
* Purchase the optional CSA design-certified
equipment shutoff valve from your dealer.
** Min. inlet pressure for purpose of input
adjustment.
CHECKING GAS CONNECTIONS
WARNING: Test all gas piping
and connections, internal and
external to unit, for leaks after
installing or servicing. Correct
all leaks at once.
WARNING: Never use an
open flame to check for a leak.
Apply a commercial leak detection solution to all joints.
Bubbles forming show a leak.
Correct all leaks at once.
14
CAUTION: For propane/LP
units, make sure external regulator has been installed between
propane/LP supply and heater.
See guidelines under Connecting
to Gas Supply, page 13.
Pressure Testing Gas Supply
Piping System
Test Pressures In Excess Of 1/2 PSIG
(3.5 kPa)
1. Disconnect appliance with its appliance
main gas valve (control valve) and equipment shutoff valve from gas supply piping.
Pressures in excess of 1/2 psig will damage heater regulator.
2. Cap off open end of gas pipe where equipment shutoff valve was connected.
3. Pressurize supply piping system by either
opening propane/LP supply tank valve
for propane/LP gas or opening main gas
valve located on or near gas meter for
natural gas or using compressed air.
4. Check all joints of gas supply piping system.
Apply a commercial leak detection solution
to all joints. Bubbles forming show a leak.
5. Correct all leaks at once.
6. Reconnect heater and equipment shutoff
valve to gas supply. Check reconnected
fittings for leaks.
Test Pressures Equal To or Less Than
1/2 PSIG (3.5 kPa)
1. Close equipment shutoff valve (see Figure 14).
2. Pressurize supply piping system by either
opening propane/LP supply tank valve
for propane/LP gas or opening main gas
valve located on or near gas meter for
natural gas or using compressed air.
Equipment
Shutoff Valve
Open
Closed
Figure 14 - Equipment Shutoff Valve
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124465-01A
INSTALLATION
Continued
3. Check all joints from gas meter (natural
gas) or propane/LP supply to equipment
shutoff valve (see Figure 15 or 16). Apply
a commercial leak detection solution to all
joints. Bubbles forming show a leak.
4. Correct all leaks at once.
Propane/LP
Equipment Shutoff Valve
Supply Tank
Control Valve
Location
Figure 15 - Checking Gas Joints
(Propane/LP Gas Only)
Equipment Shutoff Valve
Gas
Meter
Control Valve Location
Figure 16 - Checking Gas Joints
(Natural Gas Only)
Pressure Testing Heater Gas
Connections
1. Open equipment shutoff valve (see Figure
14, page 14).
2. Open main gas valve located on or near
gas meter for natural gas or open propane/LP supply tank valve.
3. Make sure control knob of heater is in the
OFF position.
4. Check all joints from gas meter (natural
gas) or propane/LP supply to equipment
shutoff valve (see Figure 15 or 16). Apply
a commercial leak detection solution to all
joints. Bubbles forming show a leak.
5. Correct all leaks at once.
6. Light heater (see Operation page 16).
Check all other internal joints for leaks.
7. Turn off heater (see To Turn Off Gas to
Appliance, page 17).
124465-01A
INSTALLING Logs
WARNING: Failure to position
the parts in accordance with these
diagrams or failure to use only
parts specifically approved with
this heater may result in property
damage or personal injury.
CAUTION: After installation and periodically thereafter,
check to ensure that no flame
comes in contact with any log.
With the heater set to High, check
to see if flames contact any log.
If so, reposition log according to
the log installation instructions
in this manual. Flames contacting log will create soot.
It is very important to install these logs exactly
as instructed. Do not modify logs. Only use
logs supplied with heater.
1. Place grate into square holes on heater
base as shown in Figure 17.
2. Place front log on burner so that it sits
between grate fingers and burner (see
Figure 17).
The Front Log Should Be
Centered Left To Right.
Front Log
Grate
Heater Base
Figure 17 - Installing Grate and Logs
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15
INSTALLATION
Continued
3. Place rear log on heater base behind the
metal burner. The bottom of the rear log
has recess areas on the left and right side
for the base to set into. Pull the rear log
forward until it touches the front log (see
Figure 17, page 15).
4. Place the left crossover log as shown
in Figure 18. The bottom of the log is
marked with a “L” for left. Match round
peg on left side of top of rear log with
round hole in bottom of left crossover.
Match square peg on left side of top of
front log with square hole in bottom of left
crossover log.
5. Place the center crossover log as shown in
Figure 19. The bottom of the log is marked
with a “C” for center. Match square peg
on center of rear log with square hole in
bottom of center crossover. Match round
peg on center of front log with round hole
in bottom of center crossover log.
6. Place the right crossover log as shown in
Figure 20. The bottom of the log is marked
with a “R” for right. Match square peg on
right side of rear log with square hole in
bottom of right crossover. Match round
peg on right side of front log with round
hole in bottom of right crossover log.
7. Add lava rock around base of heater if
desired. Do not place any lava rock on
logs or burner.
Center
Crossover
Log
Figure 19 - Installing Center Crossover
Log (H18 Series Shown)
Right
Crossover
Log
Left Crossover
Log
Figure 20 - Installing Left Crossover Log
Figure 18 - Installing Left Crossover Log
16
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124465-01A
Operation
FOR YOUR SAFETY
READ BEFORE LIGHTING
LIGHTING
INSTRUCTIONS
WARNING: If you do not follow these instructions exactly,
a fire or explosion may result
causing property damage, personal injury or loss of life.
WARNING:
• 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. Make
sure there are no obstructions
across openings of fireplace.
• You must operate this heater
with a fireplace screen in
place. Make sure fireplace
screen is closed before running heater.
A. This appliance has a pilot which must
be lighted by hand. When lighting
the pilot, follow these instructions
exactly.
B. BEFORE LIGHTING smell all around
the appliance area for gas. Be sure to
smell next to the floor because some
gas is heavier than air and will settle
on the floor.
WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electric 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.
C. Use only your hand to push in or turn
the gas control knob. Never use tools.
If the knob will not push in or turn by
hand, don’t try to repair it, call a qualified service technician or gas supplier.
Force or attempted repair may result in
a fire or explosion.
D. Do not use this appliance if any part has
been under water. Immediately call a
qualified service technician to inspect
the appliance and to replace any part of
the control system and any gas control
which has been under water.
124465-01A
NOTICE: During initial operation
of new heater, burning logs will
give off a paper-burning smell.
Orange flame will also be present. Open damper or window to
vent smell. This will only last a
few hours.
Note: Home owners generally prefer to operate their heater with the chimney damper
closed. This will put all the heat into the room.
However, there may be times you will desire
the full flames of the HI heat setting but will
find the heat output excessive. You can open
the chimney damper (if you have one) fully or
partially to release some of the heat.
WARNING: Damper handle
will be hot if heater has been
running.
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17
OPERATion
Continued
1. STOP! Read the safety information in
column 1.
2. Make sure equipment shutoff valve is fully
open.
3. Press in and turn control knob clockwise
to the OFF position.
4. Wait five (5) minutes to clear out any gas.
Then smell for gas, including near the
floor. If you smell gas, STOP! Follow “B”
in the safety information, page 17. If you
don’t smell gas, go to the next step.
5. Press in control knob and turn counterclockwise
to the PILOT position. The
ignitor will spark once. Keep control knob
pressed in for 5 seconds. If control knob does
not pop up when released, contact a qualified
service person or gas supplier for repairs.
Note: You may be running this heater for
the first time after hooking up to gas supply. If so, the control knob may need to be
pressed in for 30 seconds or more. This will
allow air to bleed from the gas system.
6. Turn control knob clockwise
to
OFF position. Press in control knob and
turn counterclockwise
to PILOT
position. This will light pilot. Pilot is attached to rear of burner. If needed, repeat
this process until pilot lights.
Note: If pilot does not stay lit, contact a
qualified service person or gas supplier
for repairs. Until repairs are made, light
pilot with match. To light pilot with match,
see Manual Lighting Procedure.
7. Keep control knob pressed in for 30 seconds after lighting pilot. After 30 seconds,
release control knob.
Note: If pilot goes out, repeat steps 3
through 7.
• If control knob does not pop out when
released, contact a qualified service
person or gas supplier for repairs.
8. Slightly press and turn control knob counterclockwise
to desired heating
level. The burner should light. Set control
knob to HI or LO.
HI
PILOT
OFF
LO
Control Knob
Figure 21 - Control Knob and Ignitor
Button Location
18
WARNING: Do not operate
heater between PILOT and HIGH
positions.
9. To leave pilot lit and shut off burners only,
turn control knob clockwise
to the
PILOT position.
Thermocouple Ignitor Electrode
Pilot Burner
Figure 22 - Pilot
VARIABLE CONTROL
OPERATION
The variable control valve can be set to high
or low, by simply turning the control knob
until that setting is attained. Even the lowest setting provides realistic, dancing yellow
flames. Selecting higher settings produces
greater heat output. This results in increased
heating comfort.
CAUTION: Do not try to adjust heating levels by using the
equipment shutoff valve.
TO TURN OFF GAS
TO APPLIANCE
1. Press in and turn control knob clockwise
to the OFF position.
2. Close equipment shutoff valve (see Figure
14, page 14).
MANUAL LIGHTING
PROCEDURE
1. Follow steps 1 through 5 under Lighting
Instructions, page 17.
2. Depress control knob and light pilot
with match.
3. Keep control knob pressed in for 30 seconds after lighting pilot. After 30 seconds,
release control knob. Now follow step 8
under Lighting Instructions, page 17.
www.desatech.com
124465-01A
Inspecting Burners
Check pilot flame pattern and burner flame
patterns often.
Thermocouple
Pilot Burner
PILOT FLAME PATTERN
Figure 23 shows a correct pilot flame pattern.
Figure 24 shows an incorrect pilot flame pattern. The incorrect pilot flame is not touching the
thermocouple. This will cause the thermocouple
to cool. When the thermocouple cools, the
heater will shut down.
If pilot flame pattern is incorrect, as shown
in Figure 24
• turn heater off (see To Turn Off Gas to Appliance, page 18)
• see Troubleshooting, page 21
Note: The pilot flame on natural gas units will
have a slight curve, but flame should be blue
and have no yellow or orange color.
Pilot Burner
Thermocouple
Figure 23 - Correct Pilot Flame Pattern
Figure 21 - Incorrect Pilot Flame Pattern4
BURNER PRIMARY AIR HOLES
Air is drawn into the burner through the holes
in the fitting at the entrance to the burner.
These holes may become blocked with dust
or lint. Periodically inspect these holes for any
blockage and clean as necessary. Blocked air
holes will create soot.
Main Burner
Periodically inspect all burner flame holes with
the heater running. All slotted burner flame
holes should be open with yellow flame present. All round burner flame holes should be
open with a small blue flame present. Some
burner flame holes may become blocked by debris or rust, with no flame present. If so, turn off
heater and let cool. Remove blockage, blocked
burner flame holes will create soot.
Cleaning and Maintenance
WARNING: Turn off heater
and let cool before cleaning.
CAUTION: You must keep
control areas, burner and circulating air passageways of heater
clean. Inspect these areas of
heater before each use. Have
heater inspected yearly by a
qualified service person. Heater
may need more frequent cleaning due to excessive lint from
carpeting, bedding material, pet
hair, etc.
124465-01A
WARNING: Failure to keep
the primary air opening(s) of
the burner(s) clean may result in
sooting and property damage.
ODS/PILOT AND BURNER
Use a vacuum cleaner or small, soft bristled
brush to clean.
Burner Injector Holder and
Pilot Air Inlet Hole
The primary air inlet holes allow the proper
amount of air to mix with the gas. This provides a clean burning flame. Keep these holes
clear of dust, dirt and lint. Clean these air inlet
holes prior to each heating season. Blocked
air holes will create soot. We recommend that
you clean the unit every three months during
operation and have heater inspected yearly
by a qualified service person.
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19
CLEANING AND MAINTENANCE
Continued
We also recommend that you keep the burner
tube and pilot assembly clean and free of dust
and dirt. To clean these parts we recommend
using compressed air no greater than 30 PSI.
Your local computer store, hardware store or
home center may carry compressed air in a
can. If using compressed air in a can, please
follow the directions on the can. If you don’t
follow directions on the can, you could damage the pilot assembly.
1. Shut off unit, including pilot. Allow unit to
cool for at least thirty minutes.
2. Inspect burner, pilot and primary air inlet
holes on injector holder for dust and dirt
(see Figure 25).
3. Blow air through the ports/slots and holes
in the burner.
4. Check injector holder located at the end of
the burner tube again. Remove any large
particles of dust, dirt, lint or pet hair with
a soft cloth or vacuum cleaner nozzle.
Burner Tube
Injector Holder (May
Be Brass or Aluminum
Depending on Model)
5. Blow air into the primary air holes on the
injector holder.
6. In case any large clumps of dust have now
been pushed into the burner repeat steps
3 and 4.
Clean pilot assembly also. A yellow tip on the
pilot flame indicates dust and dirt in the pilot
assembly. There is a small pilot air inlet hole
about 2" from where the pilot flame comes out
of the pilot assembly (see Figure 26). With the
unit off, lightly blow air through the air inlet
hole. You may blow through a drinking straw
if compressed air is not available.
Pilot
Assembly
Pilot Air
Inlet Hole
Figure 26 - Pilot Inlet Air Hole
Primary Air
Inlet Holes
Figure 25 - Injector Holder On Outlet
Burner Tube
20
www.desatech.com
124465-01A
Troubleshooting
WARNING: Turn off and unplug heater and let cool before servicing.
Only a qualified service person should service and repair heater.
CAUTION: Never use a wire, needle or similar object to clean
ODS/pilot. This can damage ODS/pilot unit.
Note: All troubleshooting items are listed in order of operation.
OBSERVED PROBLEM
POSSIBLE CAUSE
REMEDY
When control knob is pressed 1. Ignitor electrode not con- 1. Reconnect ignitor cable
in and turned to pilot, there
nected to ignitor cable
is not spark at ODS/pilot
2. Ignitor cable pinched or 2. Free ignitor cable if pinched
wet
by any metal or tubing. Keep
ignitor cable dry
3. Broken ignitor cable
3. Replace valve
4. Bad piezo ignitor
4. Replace valve
5. Ignitor electrode broken
5. Replace pilot
6. Ignitor electrode positioned 6. Reposition ignitor electrode
wrong
When control knob is pressed 1. Gas supply turned off or
in and turned to pilot, there
equipment shutoff valve
is spark at ODS/pilot but no
closed
ignition
2. Control knob not in PILOT
position
3. Control knob not pressed in
while in PILOT position
4. Air in gas lines when installed
1. Turn on gas supply or open
equipment shutoff valve
2. Turn control knob to PILOT
position
3. Press in control knob while
in PILOT position
4. Continue holding down control knob. Repeat igniting operation until air is removed
5. Depleted gas supply (pro- 5. Contact local propane/LP
pane/LP only)
gas company
6. ODS/pilot is clogged
6. Clean ODS/pilot (see Cleaning and Maintenance, page
19) or replace ODS/pilot
assembly
7. Gas regulator setting is 7. Replace gas regulator
not correct
124465-01A
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21
TROUBLESHOOTING
Continued
OBSERVED PROBLEM
POSSIBLE CAUSE
REMEDY
ODS/pilot lights but flame 1. Control knob not fully 1. Press in control knob fully
goes out when control knob
pressed in
is released
2. Control knob not pressed in 2. After ODS/pilot lights, keep
long enough
control knob pressed in 30
seconds
3. Equipment shutoff valve not 3. Fully open equipment shutfully open
off valve
4. Pilot flame not touching 4. A) Contact local natural or
thermocouple, which alpropane/LP gas company
lows thermocouple to cool,
causing pilot flame to go
B) Clean ODS/pilot (see
out. This problem could be
Cleaning and Maintenance,
caused by one or both of
page 19) or replace ODS/
the following:
pilot assembly
A) Low gas pressure
B) Dirty or partially clogged
ODS/pilot
5. Thermocouple connection 5. Hand tighten until snug,
loose at control valve
then tighten 1/4 turn more
6. Thermocouple damaged
6. Replace pilot assembly
7. Control valve damaged
7. Replace control valve
Burner does not light after 1. Burner orifice clogged
ODS/pilot is lit
1. Clean burner (see Cleaning
and Maintenance, page 19)
or replace burner orifice
2. Inlet gas pressure is too 2. Contact local natural or
low
propane/LP gas company
Delayed ignition of burner
1. Manifold pressure is too 1. Contact local natural or
low
propane/LP gas company
2. Burner orifice clogged
2. Clean burner (see Cleaning
and Maintenance, page 19)
or replace burner orifice
Burner backfiring during com- 1. Burner orifice is clogged or 1. Clean burner (see Cleaning
bustion
damaged
and Maintenance, page 19)
or replace burner orifice
2. Damaged burner
2. Replace damaged burner
3. Gas regulator defective
3. Replace gas regulator
22
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124465-01A
TROUBLESHOOTING
Continued
OBSERVED PROBLEM
POSSIBLE CAUSE
REMEDY
Slight smoke or odor during 1. Not enough air
initial operation
1. Check burner for dirt and
debris. If found, clean
burner (see Cleaning and
Maintenance, page 19)
2. Gas regulator defective
2. Replace gas regulator
3. Residues from manufac- 3. Problem will stop after a few
turing processes and log
hours of operation
curing
Moisture/condensation no- 1. Not enough combustion/ 1. Refer to Air for Combustion
ticed on windows
ventilation air
and Ventilation requirements (page 5)
Heater produces a whistling 1. Turning control knob to HI 1. Turn control knob to LO
noise when burner is lit
position when burner is
position and let warm up
cold
for a minute
2. Air in gas line
2. Operate burner until air is
removed from line. Have
gas line checked by local
natural or propane/LP gas
company
3. Air passageways on heater 3. Observe minimum instalblocked
lation clearances (see
page 8)
4. Dirty or partially clogged 4. Clean burner (see Cleaning
burner orifice
and Maintenance, page 19)
or replace burner orifice
White powder residue forming 1. When heated, vapors from 1. Turn heater off when uswithin burner box or on adjafurniture polish, wax, carpet
ing furniture polish, wax,
cent walls or furniture
cleaners, etc. may turn into
carpet cleaners or similar
a white powder residue
products
Heater produces a clicking/ 1. Metal expanding while 1. This is normal with most
ticking noise just after burner
heating or contracting while
heaters. If noise is excesis lit or shut off
cooling
sive, contact qualified service person
124465-01A
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23
TROUBLESHOOTING
Continued
WARNING: 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.
Operating heater where impurities in air exist may create odors. Cleaning supplies, paint, paint
remover, cigarette smoke, cements and glues, new carpet or textiles, etc., create fumes. These
fumes may mix with combustion air and create odors. These odors will disappear over time.
OBSERVED PROBLEM
POSSIBLE CAUSE
REMEDY
Heater produces unwanted 1. Heater burning vapors from 1. Open window and ventilate
odors
paint, hair spray, glues,
room. Stop using odor
cleaners, chemicals, new
causing products while
carpet, etc. (See IMPORheater is running
TANT statement above)
2. Low fuel supply (propane/ 2. Refill supply tank (propane/
LP only)
LP only)
3. Gas leak. See Warning 3. Locate and correct all leaks
statement above
(see Checking Gas Connections, page 14)
Heater shuts off in use (ODS 1. Not enough fresh air is 1. Open window and/or door
operates)
available
for ventilation
2. Low line pressure
2. Contact local natural or
propane/LP gas company
3. O D S / p i l o t i s p a r t i a l l y 3. C l e a n O D S / p i l o t ( s e e
clogged
Cleaning and Maintenance,
page 19)
Gas odor even when control 1. Gas leak. See Warning 1. Locate and correct all leaks
knob is in OFF position
statement above
(see Checking Gas Connections, page 14)
2. Control valve defective
2. Replace control valve
Gas odor during combustion
24
1. Foreign matter between 1. Take apart gas tubing and
control valve and burner
remove foreign matter
2. Gas leak. See Warning 2. Locate and correct all leaks
statement above
(see Checking Gas Connections, page 14)
www.desatech.com
124465-01A
Specifications
Models H18PB
• Rating (Variable): 16,000/23,000 Btu/Hr
• Gas Type: Propane/LP
• Ignition: Piezo
• Manifold Pressure: 8.0" W.C.
• Inlet Gas Pressure (in. of water):
Maximum 14" W.C., Minimum 11"* W.C.
• Shipping Weight: 27 lbs.
Models H24PB
• Rating (Variable): 16,000/26,000 Btu/Hr
• Gas Type: Propane/LP
• Ignition: Piezo
• Manifold Pressure: 8.0" W.C.
• Inlet Gas Pressure (in. of water):
Maximum 14" W.C., Minimum 11"* W.C.
• Shipping Weight: 27 lbs.
Models H18NB
• Rating (Variable): 17,000/24,000 Btu/Hr
• Gas Type: Natural
• Ignition: Piezo
• Manifold Pressure: 3.0" W.C.
• Inlet Gas Pressure (in. of water):
Maximum 10.5" W.C., Minimum 5"* W.C.
• Shipping Weight: 27 lbs.
*For the purpose of input adjustment.
Models H24NB
• Rating (Variable): 17,000/26,000 Btu/Hr
• Gas Type: Natural
• Ignition: Piezo
• Manifold Pressure: 3.0" W.C.
• Inlet Gas Pressure (in. of water):
Maximum 10.5" W.C., Minimum 5"* W.C.
• Shipping Weight: 27 lbs.
*For the purpose of input adjustment.
Technical Service
Service Hints
You may have further questions about installation, operation or troubleshooting. If so, contact
DESA Heating, LLC at 1-866-672-6040. When
calling please have your model and serial
numbers of your heater ready.
You can also visit DESA Heating, LLC’s web
site at www.desatech.com.
When Gas Pressure Is Too Low
• pilot will not stay lit
• burners will have delayed ignition
• heater will not produce specified heat
• propane/LP gas supply may be low
You may feel your gas pressure is too low. If
so, contact your local natural or propane/LP
gas supplier.
Replacement Parts
Note: Use only original replacement parts.
This will protect your warranty coverage for
parts replaced under warranty.
Usually, we will ask you to return the part to
the factory.
Parts Under Warranty
Contact authorized dealers of this product.
If they can’t supply original replacement
part(s), contact your nearest Parts Central
(see page 28) or call DESA Heating, LLC at
1-866-672-6040 for referral information. A list
of authorized dealers can be found by visiting
www.deaint.com.
When calling DESA Heating, LLC, have
ready
• model number of your heater
• the replacement part number
Contact authorized dealers of this product. If
they can’t supply original replacement part(s),
call DESA Heating, LLC at 1-866-672-6040.
When calling DESA Heating, LLC, have
ready:
• your name
• your address
• model and serial numbers of your heater
• how heater was malfunctioning
• type of gas used (propane/LP or natural
gas)
• purchase date
124465-01A
Parts Not Under Warranty
www.desatech.com
25
Parts
Variable Manually-Controlled H18NB, H18PB, H24NB AND H24PB
17-3
17-4 (18" Models)
17-2
17-4
(24" Models)
17-5
17-1
15
3
4
8
14
1
5
13
7
15
10
14
16
11
12
15
9
2
26
www.desatech.com
124465-01A
Parts
KEY
NO. PART NO.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
17-1
17-2
17-3
17-4
17-5
120804-01PP
120783-01
120517-04PP
122862-01
120630-04
120630-02
120517-02
099415-23
099415-24
122142-01
122142-02
122141-01
122146-02
107186-05
107186-06
107186-07
107186-08
098354-01
099387-08
M11084-38
M11084-26
098303-01
124453-03
124453-04
124520-01
124521-01
124520-02
124521-02
124520-03
124521-03
124520-04
124521-04
124520-05
124521-05
DESCRIPTION
Log Base
Cast Iron Grate
Pilot Bracket
Single Yellow Flame Burner
ODS Pilot, NG
ODS Pilot, LP
Regulator Bracket
Gas Regulator, NG
Gas Regulator, LP
Manual Valve with Ignitor, NG
Manual Valve with Ignitor, LP
Manual Valve Outlet Tube
Natural Gas Plate
Injector
Injector
Injector
Injector
Control Knob
Pilot Tube
HWH AB 8-18 x 0.38 Screw
HWH AB 10-16 x 0.38 Screw
HWH AB 6-20 x 0.25 Screw
18" Log Set
24" Log Set
Front Log
Front Log
Rear Log
Rear Log
Left Crossover Log
Left Crossover Log
Center Crossover Log
Center Crossover Log
Right Crossover Log
Right Crossover Log
H18
NB
H18
PB
H24
NB
H24
PB
This list contains replaceable parts used in your heater. When ordering parts, follow the
instructions listed under Replacement Parts on page 25 of this manual.
QTY.
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
8
2
1
1
1
1
1
1
1
1
1
1
1
1
•
•
•
•
•
•
•
•
•
•
•
•
1
1
1
1
1
1
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
PARTS AVAILABLE — NOT SHOWN
100563-01
101055-08
100639-01
101449-13
101137-02
GA6060
Warning Plate
Lighting Instructions Plate
Caution Decal
Control Position Decal
Hardware Kit
Lava Rock
•
•
•
•
•
•
•
•
•
•
•
•
** Not a field replaceable part.
124465-01A
www.desatech.com
27
Accessories
Purchase these fireplace accessories from
your local dealer. If they can not supply these
accessories, either contact your nearest
Parts Central or call DESA Heating, LLC at
1-866-672-6040 for information. You can
also write to the address listed on the back
page of this manual.
DAMPER CLAMP - GA6080
For variably-controlled models. Permanently opens chimney flue damper for vented
operation.
Decorative ash bed control
cover - cdabk
For all models. An attractive way to cover
control knob and piezo ignitor.
LAVA ROCK - GA6060
For all models. Order when additional rock
is desired.
PINE CONES – GA9650A
CLEANING KIT – CCK
SILICA SAND – GA9850A
Parts Central
These Parts Centrals are privately owned businesses. They have agreed to support our
customer’s needs by providing original replacement parts and accessories.
Those Heater Guys
225 E. Stowell Street
Upland, CA 91786
909-928-3011
Tool & Equipment, Co.
5 Manila Ave
Hamden, CT 06514-0322
1-800-397-7553
203-248-7553
Parts Department
Portable Heater Parts
342 N. County Rd. 400 East
Valparaiso, IN 46383-9704
All States
219-462-7441
1-888-619-7060
sales@portableheaterparts.com
techservice@portableheaterparts.com
FBD
1349 Adams Street
Bowling Green, KY 42103-3414
270-846-1199
1-800-654-8534
Fax: 1-800-846-0090
franktalk@aol.com
Master Parts Dist.
1251 Mound Ave. NW
Grand Rapids, MI 49504-2672
616-791-0505
1-800-446-1446
Fax: 616-791-8270
www.nbmc.com
28
Washer Equipment Co.
1715 Main Street
Kansas City, MO 64108-2195
KS, MO, AR
816-842-3911
www.washerparts.com
East Coast Energy Products
10 East Route 36
W. Long Branch, NJ 07764
732-870-8809
1-800-755-8809
www.njplaza.com/ecep
21st Century
2950 Fretz Valley Road
Perkasie, PA 18944-4034
215-795-0400
800-325-4828
Laporte’s Parts & Service
2444 N. 5th Street
Hartsville, SC 29550-7704
843-332-0191
Parts Department
Cans Unlimited, Inc.
P.O. Box 645
Taylor, SC 29687-0013
All States
803-879-3009
1-800-845-5301
cuisales@aol.com
www.desatech.com
124465-01A
NOTES
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124465-01A
www.desatech.com
29
NOTES
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30
www.desatech.com
124465-01A
NOTES
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124465-01A
www.desatech.com
31
Warranty
KEEP THIS WARRANTY
Model (located on product or identification tag)______________________________
Serial No. (located on product or identification tag)___________________________
Date Purchased ___________________________
Keep receipt for warranty verification.
DESA HEATING, LLC LIMITED WARRANTIES
New Products
Standard Warranty: DESA Heating, LLC warrants this new product and any parts thereof to be free from
defects in material and workmanship for a period of one (1) year from the date of first purchase from an
authorized dealer provided the product has been installed, maintained and operated in accordance with
DESA Heating, LLC’s warnings and instructions.
For products purchased for commercial, industrial or rental usage, this warranty is limited to 90 days from
the date of first purchase.
Factory Reconditioned Products
Limited Warranty: DESA Heating, LLC warrants factory reconditioned products and any parts thereof
to be free from defects in material and workmanship for 30 days from the date of first purchase from an
authorized dealer provided the product has been installed, maintained and operated in accordance with
DESA Heating, LLC’s warnings and instructions.
Terms Common to All Warranties
The following terms apply to all of the above warranties:
Always specify model number and serial number when contacting the manufacturer. To make a claim under
this warranty the bill of sale or other proof of purchase must be presented.
This warranty is extended only to the original retail purchaser when purchased from an authorized dealer,
and only when installed by a qualified installer in accordance with all local codes and instructions furnished
with this product.
This warranty covers the cost of part(s) required to restore this product to proper operating condition and
an allowance for labor when provided by a DESA Heating, LLC Authorized Service Center or a provider
approved by DESA Heating, LLC. Warranty parts must be obtained through authorized dealers of this product and/or DESA Heating, LLC who will provide original factory replacement parts. Failure to use original
factory replacement parts voids this warranty.
Travel, handling, transportation, diagnostic, material, labor and incidental costs associated with warranty
repairs, unless expressly covered by this warranty, are not reimbursable under this warranty and are the
responsibility of the owner.
Excluded from this warranty are products or parts that fail or become damaged due to misuse, accidents,
improper installation, lack of proper maintenance, tampering, or alteration(s).
This is DESA Heating, LLC’s exclusive warranty, and to the full extent allowed by law; this express warranty
excludes any and all other warranties, express or implied, written or verbal and limits the duration of any
and all implied warranties, including warranties of merchantability and fitness for a particular purpose to one
(1) year on new products and 30 days on factory reconditioned products from the date of first purchase.
DESA Heating, LLC makes no other warranties regarding this product.
DESA Heating, LLC’s liability is limited to the purchase price of the product, and DESA Heating, LLC shall
not be liable for any other damages whatsoever under any circumstances including indirect, incidental, or
consequential damages.
Some states do not allow limitations on how long an implied warranty lasts or the exclusion or limitation of
incidental or consequential damages, so the above limitation or exclusion may not apply to you.
This warranty gives you specific legal rights, and you may also have other rights which vary from state to state.
For information about this warranty contact:
124465 01
NOT A UPC
DESA Heating, LLC
2701 Industrial Drive
Bowling Green, KY 42101
www.desatech.com
1-866-672-6040
124465-01
Rev. A
10/08
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