Desa LDL3930NRB Operation manual
For more information, visit www.desatech.com
WARNING: If the information in this manual is not
— WHAT TO DO IF YOU SMELL GAS
-
UNVENTED (VENT-FREE) GAS LOG HEATER
OWNER’S OPERATION AND INSTALLATION MANUAL
MODELS LDL3930NRB AND LDL3930PRB
30" Remote-Ready Models
www.desatech.com 121486-01F2
SAFETy
alteration, service, or main-
this manual for correct in-
-
tance or additional infor-
-
masonry or UL127 fac-
-
in accordance with ANSI
includes instructions stat-
WARNING: This is an
-
from the room in which
and ventilation air must
Air
for Combustion and Ven-
tilation
-
stalled in an aftermarket,*
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TABLE OF CONTENTS
Safety .................................................................. 2
Local Codes......................................................... 4
Unpacking............................................................ 5
Product Identication........................................... 5
Product Features................................................. 5
Air For Combustion and Ventilation ..................... 5
Installation ........................................................... 8
Operation........................................................... 17
Inspecting Heater .............................................. 22
Cleaning and Maintenance................................ 22
Specications .................................................... 23
Troubleshooting................................................. 24
Service Hints ..................................................... 28
Technical Service............................................... 28
Replacement Parts............................................ 28
Wiring Diagram.................................................. 28
Accessories ....................................................... 29
Parts .................................................................. 30
Warranty ..............................................Back Cover
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121486-01F 3
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known to the state of California
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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. Have
heater serviced. Some people are more af-
fected by carbon monoxide than others. These
include pregnant women, people with heart or
lung disease or anemia, those under the inu-
ence of alcohol, and those at high altitudes.
Natural and
propane/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.
this heater or its controls can
WARNING: Do not use a
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SAFETy
Continued
WARNING: Do not allow fans
will remain hot for a time after
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dren when they are in the room
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www.desatech.com 121486-01F4
1. This appliance is only for use with the type
of gas indicated on the rating plate. This
appliance is not convertible for use with
other gases.
2. Do not place propane/LP supply tank(s)
inside any structure. Locate propane/LP
supply tank(s) outdoors (propane/LP
units only).
3. If you smell gas
• shut off gas supply
• do not try to light any appliance
• do not touch any electrical switch; do not
use any phone in your building
• immediately call your gas supplier from
a neighbor’s phone. Follow the gas
supplier’s instructions
• if you cannot reach your gas supplier,
call the re department
4. This heater shall not be installed in a
bedroom or bathroom, unless installed as
a vented appliance. See Installing Damper
Clamp Accessory for Vented Operation,
page 11. This gas log set may not be
installed as a vented appliance in a bed-
room or bathroom in the Commonwealth
of Massachusetts.
5. Before installing in a solid fuel burning re-
place, the chimney ue and rebox must
be cleaned of soot, creosote, ashes and
loose paint by a qualied chimney cleaner.
Creosote will ignite if highly heated. A dirty
chimney ue may create and distribute
soot within the house. Inspect chimney
ue for damage. If damaged, repair ue
and rebox before operating heater.
6. Do not burn solid-fuel in a masonry or
UL127 factory-built replace in which a
vent-free room heater is installed.
7. If replace has glass doors, never operate
this heater with glass doors closed. If you
operate heater with doors closed, heat
buildup inside replace will cause glass to
burst. Make sure there are no obstructions
across opening of replace.
8. To prevent the creation of soot, follow the
instructions in Cleaning and Maintenance,
page 22.
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 and furniture.
10. This heater needs fresh, outside air venti-
lation to run properly. This heater has an
Oxygen Depletion Sensing (ODS) safety
shutoff system. The ODS shuts down the
heater if enough fresh air is not available.
See Air for Combustion and Ventilation,
page 5. If heater keeps shutting off, see
Troubleshooting, page 24.
11.Do not run heater
• where ammable liquids or vapors are
used or stored
• under dusty conditions
12.Do not use this heater to cook food or burn
paper or other objects.
13.Do not use heater if any part has been ex-
posed to or under water. Immediately call
a qualied service technician to inspect
the room heater and to replace any part
of the control system and any gas control
which has been under water.
14.Do not operate heater if any log is broken.
Do not operate heater if a log is chipped
(dime-sized or larger).
15.Turn heater off and let cool before servic-
ing, installing, or repairing. Only a qualied
service person should install, service, or
repair heater.
16.Operating heater above elevations of
4,500 feet may cause pilot outage.
17. To prevent performance problems, do not
use propane/LP fuel tank of less than 100
lb. capacity (propane/LP units only).
18.Provide adequate clearances around air
openings.
LOCAL CODES
Install and use heater with care. Follow all
local codes. In the absence of local codes,
use the latest edition of The National Fuel
Gas Code ANSI Z223.1/NFPA 54*.
*Available from:
American National Standards Institute, Inc.
1430 Broadway
New York, NY 10018
National Fire Protection Association, Inc.
Batterymarch Park
Quincy, MA 02269
Note: Where listed vented decorative logs
are required, thermostat operation is not
permitted.
SAFETy
Continued
www.desatech.com
121486-01F 5
8 Piece
Log Set
UNPACkING
CAUTION: Do not remove the
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1. Remove logs and heater base assembly
from carton. Note: Do not pick up heater
base assembly by burners. This could
damage heater. Always handle base as-
sembly by grate.
2. Remove all protective packaging applied
to logs and heater for shipment.
3. Check all items for any shipping damage.
If damaged, promptly inform dealer where
you bought heater.
PRODUCT
IDENTIFICATION
Figure 1 - Product Identication
Control
Cover Log
Remote
Control
Control Knob and Piezo
Ignitor (behind cover log)
PRODUCT FEATURES
This heater is clean burning. It requires no out-
side venting. There is no heat loss out a vent
or up a chimney. Heat is generated by realistic
ames. This heater is designed for vent-free
operation with ue damper closed. It has been
tested and approved to ANSI Z21.11.2 standard
for unvented heaters. State and local codes in
some areas prohibit the use of vent-free heaters.
This heater may also be operated as a vented
decorative (ANSI Z21.60) product by opening
the ue damper.
This heater has a pilot with an Oxygen Deple-
tion 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.
This heater has a piezo ignitor. This system
requires no matches, batteries, or other
sources to light heater.
AIR FOR COMBUSTION
AND VENTILATION
WARNING: This heater shall
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National Fuel Gas Code, ANSI
Z223.1/NFPA 54, the International
Fuel Gas Code,-
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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. Dur-
ing 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 ap-
pliances need fresh air for proper combustion
and ventilation.
State of Massachusetts: The installa-
tion must be made by a licensed plumber
or gas fitter in the Commonwealth of
Massachusetts.
Sellers 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.
LOCAL CODES
Continued
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AIR FOR COMBUSTION AND VENTILATION
Continued
Exhaust fans, replaces, clothes dryers, and
fuel burning appliances draw air from the house
to operate. You must provide adequate fresh
air for these appliances. This will insure proper
venting of vented fuel-burning appliances.
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 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.
The air that leaks around doors and windows
may provide enough fresh air for combustion
and ventilation. However, in buildings of un-
usually tight construction, you must provide
additional fresh air.
construction where:
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-112
and
and
If your home meets all of the three criteria
Ventilation Air From Outdoors,
If your home does not meet all of the three
Determining
Fresh-Air Flow For Heater Location
The National Fuel Gas Code, ANSI Z223.1/
NFPA 54 denes a conned space as a space
whose volume is less than 50 cubic feet per
1,000 Btu/hr (4.8 m3 per kw) of the aggregate
input rating of all appliances installed in that
space and an unconned space as a space
whose volume is not less than 50 cubic feet
per 1,000 Btu/hour (4.8 m3 per kw) of the ag-
gregate input rating of all appliances installed in
that space. Rooms communicating directly with
the space in which the appliances are installed*,
through openings not furnished with doors, are
considered a part of the unconned space.
* Adjoining rooms are communicating only if
there are doorless passageways or ventilation
grills between them.
DETERMINING FRESH-AIR FLOW
FOR HEATER LOCATION
Use this work sheet to determine if you have
a conned or unconned 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 sup-
plied 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: 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 heater ___________ 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.
Direct-vent draws combustion air from the
outdoors and vents to the outdoors.
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121486-01F 7
40,000
33,000
73,000
Example:
Gas water heater ___________ Btu/Hr
Vent-free heater + __________ Btu/Hr
Total = __________ 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)
73,000 Btu/Hr (actual amount of Btu/Hr
used)
The space in the above example is a conned
space because the actual Btu/Hr used is more
than the maximum Btu/Hr the space can sup-
port. 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 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
Ventilation Air From Outdoors.
C. Install a lower Btu/Hr heater, if lower Btu/Hr
size makes room unconned.
WARNING:Iftheareainwhich
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National Fuel
Gas Code,ANSI Z223.1/NFPA54,
the International Fuel Gas Code,
This fresh air would come from an adjoining
unconned space. When ventilating to an
adjoining unconned space, you must provide
two permanent openings: one within 12" of the
ceiling and one within 12" of the oor on the
AIR FOR COMBUSTION AND VENTILATION
Continued
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.
Provide extra fresh air by using ventilation
grills or ducts. You must provide two perma-
nent 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, 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 thermo-
stat-controlled power vent. Heated air entering
the attic will activate the power vent.
Figure 2 - Ventilation Air from Inside
Building
Or
Remove
Door into
Adjoining
Room,
Option
3
Ve ntilation Grills
Into Adjoining Room,
Option 2
Ve ntilation
Grills Into
Adjoining
Room,
Option 1
12"
12"
Figure 3 - Ventilation Air from Outdoors
Outlet
Air
V e ntilated
Attic
Outlet
A
ir
Inlet
Air
Inlet Air V e ntilated
Crawl Space
T o
Crawl
Space
T o Attic
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INSTALLATION
WARNING: Never install the
heater
unless installed as a vented
where curtains, furniture, cloth-
CAUTION: This heater cre-
currents move heat to wall sur-
heater next to vinyl or cloth wall
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the air exist, may discolor walls
IMPORTANT: Vent-free heaters add moisture
to the air. Although this is benecial, installing
heater in rooms without enough ventilation
air may cause mildew to form from too much
moisture. See Air for Combustion and Ventila-
tion, page 5.
Use the correct gas type (natural or propane/
LP) for your unit. If your gas supply is not cor-
rect, do not install log set. Call dealer where
you bought log set for proper type replace.
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NOTICE: This heater is intended
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NOTICE: State or local codes may
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WARNING: Make sure the se-
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WARNING: Seal any fresh air
vents or ash clean-out doors located
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121486-01F 9
INSTALLATION
Continued
Carefully follow the instructions below. This
will ensure safe installation into a masonry,
UL127-listed manufactured replace, or listed
vent-free rebox.
Minimum Clearances For Side
A. Clearances from the side of the replace
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 com-
bustible material must be 4" from the side
of the replace 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 replace
opening to the ceiling should not be less
than 42".
Figure 4 - Minimum Clearance for
Combustible to Wall
*Minimum 16" from Side Wall
Example
INSTALLATION AND CLEARANCES
WARNING: Maintain the
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Front
Width
Rear *
Width
17" 14" 34" 24"
* Measured at 14" depth.
NOTICE: Manual control heaters
If so, you must always run heater
Installing Damper
Clamp Accessory for Vented
Operation
MATERIAL CLEARANCES
Note: If using a mantel proceed to If Using
Mantel. If not using a mantel, follow the infor-
mation on this page.
You must have noncombustible material(s)
above the replace opening. Noncombustible
materials (such as slate, marble, tile, etc.)
must be at least 1/2" thick. With sheet metal,
you must have noncombustible material be-
hind it. Noncombustible material must extend
at least 8" up. If noncombustible material is
less than 12", you must install the replace
hood accessory. See Figure 5, page 10 for
minimum clearances.
*
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INSTALLATION
Continued
Figure 5 - Heat Resistant Material (Slate,
Marble, Tile, etc.) Above Fireplace
Material
Safe Installation
12" or more Noncombustible
material OK.
Between 8" and
12"
Install replace hood
accessory (GA6050,
GA6052, or GA6053 see
Accessories, page 29).
Less than 8" Noncombustible mate-
rial must be extended
to at least 8". See
Between 8" and 12",
above. If you cannot
extend material, you
must operate heater
with ue damper open.
You must have noncombustible material(s)
above the replace opening. Noncombustible
materials (such as slate, marble, tile, etc.) must
be at least 1/2" thick. With sheet metal, you
must have noncombustible material behind it.
Noncombustible material must extend at least
8" up. If noncombustible material is less than
12", you must install the replace hood acces-
sory. Even if noncombustible material is more
than 12", you may need the hood accessory to
deect heat away from your mantel shelf. See
Figures 5, 6 and 7 for minimum clearances.
IMPORTANT: If you cannot meet these mini-
mum clearances, you must operate heater
with chimney ue damper open. Go to Install-
ing Damper Clamp Accessory for Vented
Operation, page 11.
MANTEL CLEARANCES
In addition to meeting noncombustible mate-
rial clearances, you must also meet required
clearances between replace opening and
mantel shelf. If you do not meet the clearances
listed below, you will need a hood.
If you meet minimum clearance between
mantel shelf and top of replace opening, a
hood is not required (see Figure 6).
If minimum clearances in Figure 6 are not met,
you must have a hood. When using a hood
there are still certain minimum mantel clear-
ances required. Follow minimum clearances
shown in Figure 7 when using hood.
Figure 6 - Minimum Mantel Clearances
Without Using Hood
Figure 7 - Minimum Mantel Clearances
When Using Hood
Minimum
Noncombustible
Material
Minimum
Noncombustible
Material Height
Distances to
Underside of
Mantel
To p of
Fireplace
Opening
Underside
of Mantel
Shelf
Mantel Shelf
12"
(A)
18" 20" 22" 24"
All
minimum
distances
are in
inches
2 1/2"
6"
8"
10"
Minimum
Noncombustible
Material
8"
Min.
12" 15" 18" 20"
2½"
6"
8"
10"
12"
Distances to
Underside of
Mantel
Hood
(GA6050,
GA6052 or
GA6053)
To p of
Fireplace
Opening
Underside
of Mantel
Shelf
Mantel Shelf
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121486-01F 11
INSTALLATION
Continued
Figure 8 - Minimum Fireplace Clearances If
Installed at Floor Level
Figure 9 - Minimum Fireplace Clearances
Above Combustible Flooring
Hearth
5"
Min.
Combustible
Material
14"
Min.
Combustible
Material
Noncombustible Material
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Follow all minimum clearances
NOTICE: If your installation does
not meet the minimum clear-
ances shown, you must do one
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FLOOR CLEARANCES
A. If installing appliance on the oor level,
you must maintain the minimum distance
of 14" to combustibles (see Figure 8).
B.
If combustible materials are less than 14" to
the replace, you must install appliance at
least 5" above the combustible ooring (see
Figure 9).
Note: When used as a vented heater, ap-
pliance must be installed only in a solid-fuel
burning fireplace with a working flue and
constructed of noncombustible material.
For Massachusetts Residents Only: Installation
of this vented gas log set in the Commonwealth of
Massachusetts requires damper be permanently
removed or welded in fully open position.
You may use this heater as a vented product.
There are three reasons for operating your
heater in the vented mode.
1. Fireplace does not meet clearance to
combustibles requirements for vent-free
operation.
2. State or local codes do not permit vent-free
operation.
3. You prefer vented operation.
If reasons 1 or 2 above apply to you, you must
permanently open chimney ue damper. You
must install damper clamp accessory (to order,
see Accessories, page 29). This will insure
vented operation (see Figure 10). Damper clamp
will keep damper open. Installation instructions
are included with clamp accessory.
See chart below for minimum permanent ue
opening you must provide. Attach damper
clamp so minimum permanent ue opening
will be maintained at all times.
ROUND FLUES
Diameter Area
5" 20 sq. inches
6" 29 sq. inches
7" 39 sq. inches
8" 51 sq. inches
Chimney
6' to 15' 39 sq. inches
15' to 30' 29 sq. inches
Figure 10 - Attaching Damper Clamp
Damper
Manufactured
Fireplace
Masonry Fireplace
Damper
Clamp Damper
Damper
Clamp
Damper
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INSTALLATION
Continued
WARNING: You must secure
not, heater will move when you
-
-
IMPORTANT: Make sure the heater burners
are level. If heater is not level, heater will not
work properly.
Installation Items Needed
• hardware package (provided with heater)
• approved exible gas hose and ttings (not
provided) (if allowed by local codes)
• sealant (resistant to propane/LP gas, not
provided)
• electric drill with 3/16" drill bit (metal or
masonry as applicable)
• at head screwdriver
• pipe wrench
1. Apply pipe joint sealant lightly to male
threads of gas tting (not provided). Con-
nect approved exible gas hose to gas
control tting in heater (see Figure 11).
IMPORTANT: Hold gas tting with wrench
when connecting exible gas hose.
2. Locate two masonry screws in hardware
package.
3. Place heater base in replace.
4. Place logs in their proper position on heater
base (see Installing Logs, page 16).
5. Center heater base and logs front-to-
back and side-to-side in replace.
6. Carefully remove logs without moving
heater base.
7. Mark screw locations through one hole on
each side of the base (see Figure 12). If
installing in a brick-bottom replace, mark
screw locations in mortar joint of bricks.
8. Drill holes at marked locations using 3/16"
drill bit.
9.
Attach base assembly to replace oor
using two masonry screws (in hardware
package).
Figure 11 - Attaching Flexible Gas Hose
to Heater
Flexible Gas Hose (if
allowed by local codes)
Fitting
Figure 12 - Attaching Heater to Fireplace
Floor
Masonry Screw
Screw Holes
in Base
WARNING: Make sure your
-
-
1. Remove battery housing cover from back
of hand-held remote.
2. Install 3 AAA batteries.
3. Replace battery housing cover.
When batteries are installed, the "little house"
icon with current room temperature will be dis-
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121486-01F 13
INSTALLATION
Continued
CAUTION: Never connect
-
WARNING: Never connect
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-certied equipment shutoff
valve with 1/8" NPT tap is an acceptable al-
ternative to test gauge connection. Purchase
the optional CSA design-certied equipment
shutoff valve from your dealer.
For propane/LP units, the installer must
supply an external regulator. The external
regulator will reduce incoming gas pressure.
You must reduce incoming gas pressure to
between 11" and 14" of water. If you do not re-
duce incoming gas pressure, heater regulator
damage could occur. Install external regulator
with the vent pointing down as shown in Figure
16, page 14. Pointing the vent down protects
it from freezing rain or sleet.
played (see Figure 14). This icon will always
show in the control window as long as the
batteries have power.
+
+
-
+
-
-
AAA
AAA
AAA
Figure 13 - Battery Install Hand-Held
Remote Control
Battery
Housing Cover
1. Remove screws from cover plate.
2. Remove battery housing cover.
3. Install 4 AA batteries.
4. Replace battery housing cover.
5. Replace cover plate.
Figure 15 - Battery Install Remote
Control Receiver
Battery Housing
Cover
Cover Plate
Screws
Receiver
Figure 14 - Remote Display
Receiver
1. Locate and remove cover plate from pack-
aging.
2. Make sure sliding selector switch ts over
switch on receiver.
3. Attach cover plate to receiver with 2
screws as shown in Figure 15.
4.
See page 21 for instructions on programming
remote receiver to hand-held remote control.
Note: For hand-held remote control to work,
programming (synchronizing) remote to re-
ceiver must be completed.
www.desatech.com 121486-01F14
We recommend that you install a sediment
trap in supply line as shown in Figure 17.
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.
INSTALLATION
Continued
CAUTION: Use only new,
-
Installation must include an equipment shutoff
valve, union, and plugged 1/8" NPT tap. Lo-
cate NPT tap within reach for test gauge hook
up. NPT tap must be upstream from heater
(see Figure 17).
IMPORTANT: Install equipment shutoff valve
in an accessible location. The equipment
shutoff valve is for turning on or shutting off
the gas to the appliance.
Check your building codes for any special
requirements for locating equipment shutoff
valve to replaces.
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.
Propane/LP
Supply Tank
External Regulator
Figure 16 - External Regulator With Vent
Pointing Down
Vent
Pointing
Down
Pipe Cap Tee
Nipple Joint
* Purchase the optional CSA design-certied
equipment shutoff valve from your dealer.
** Minimum inlet pressure for purpose of input
adjustment.
Figure 17 - Gas Connection
Gas Control
3" Min.
Sediment Trap
- From
External
Regulator
(11" W.C.**
to 14" W.C.
Pressure)
Natural-
From Gas
Meter (5"
W.C.** to
10.5" W.C.
Pressure)
CSA Design-
Certied Equipment
Shutoff Valve With
1/8" NPT Tap*
Approved Flexible
Gas Hose (if allowed
by local codes)
www.desatech.com
121486-01F 15
INSTALLATION
Continued
CHECKING GAS CONNECTIONS
-
and external to unit, for leaks
-
WARNING: Never use an
CAUTION: Make sure exter-
-
der Connecting to Gas Supply,
1. Disconnect appliance with its appliance
main gas valve (control valve) and equip-
ment shutoff valve from gas supply piping
system. Pressures in excess of 1/2 psig
will damage heater regulator.
2. Cap off open end of gas pipe where equip-
ment 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 noncorrosive leak detection uid 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
ttings for leaks.
1. Close equipment shutoff valve (see Fig-
ure 18).
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.
3. Check all joints from gas meter to equip-
ment shutoff valve for natural gas or pro-
pane/LP supply to equipment shutoff valve
for propane/LP (see Figures 19 and 20).
Apply noncorrosive leak detection uid to
all joints. Bubbles forming show a leak.
4. Correct all leaks at once.
Open
Closed
Gas Meter
Equipment
Shutoff
Valve
Gas Control
Valve Location
Figure 20 - Checking Gas Joints (Natural
Gas only)
Figure 18 - Equipment Shutoff Valve
Figure 19 - Checking Gas Joints
(Propane/LP only)
Gas Control
Valve Location
Propane/LP
Supply Tank
Equipment
Shutoff Valve
Equipment
Shutoff Valve
www.desatech.com 121486-01F16
CONNECTIONS
1. Open equipment shutoff valve (see Figure
18, page 15).
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 to gas control (see Figures
19 or 20, page 15). Apply noncorrosive
leak detection uid to all joints. Bubbles
forming show a leak.
5. Correct all leaks at once.
6. Light heater (see Operation, page 17).
Check all other internal joints for leaks.
7. Turn off heater (see To Turn Off Gas to
Appliance, page 19).
INSTALLING LOGS
-
CAUTION: After installa-
With the heater set to HI, check
-
It is very important to install the logs exactly
as instructed. Do not modify logs. Only use
logs supplied with heater.
1. Place rear log (log #1) behind burner on the
two pins on rear bracket (see Figure 21).
2. Place cutouts of middle log (log #2) on
burner as shown in Figure 22.
3. Place left front log (log #3) on grate prongs
as shown in Figure 23.
Figure 21 - Rear Log (Log #1) Placement
Figure 22 - Middle Log (Log #2)
Placement
Log #1
Log #2
Cutout
Cutout
Figure 23 - Placement of Front Logs
(Log #3 and Log #4)
Log #4
Grate
Prongs
Log #3
Peg
INSTALLATION
Continued
www.desatech.com
121486-01F 17
INSTALLATION
Continued
4. Place right front log (log #4) on peg of log
#3 and grate prongs as shown in Figure
23, page 16.
5. Place left crossover log (log #5) on pegs
of log #2 and #3 (see Figure 24). Place
Figure 24 - Placement of Crossover Logs
(Logs #5, #6, and #7)
Log #5
Log #6
Log #7
Figure 25 - Control Cover Log (Log #8)
Placement
Log #8
OPERATION
middle crossover log (log #6) on pegs of
log #1 and #2 (see Figure 24). Place right
crossover log (log #7) on pegs of log #2
and #4 (see Figure 24).
6. Slide control cover log (log #8) into
place between front logs #3 and #4 (see
Figure 25).
FOR YOUR SAFETY
WARNING: If you do not fol-
low these instructions exactly,
-
heavier than air and will settle on the
WHAT TO DO IF YOU SMELL GAS
-
www.desatech.com 121486-01F18
LIGHTING
INSTRUCTIONS
WARNING
-
erate heater with doors closed,
-
-
Note: Home owners generally prefer to oper-
ate 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 ames of the highest heat setting but
will nd the heat output excessive. You can
open the chimney damper (if you have one)
fully or partially to release some of the heat.
come on automatically within
one minute when the control
1. STOP! Read the safety information on
page 17.
2. Make sure equipment shutoff valve is fully
open.
3. Remove control cover log (see Figure 26).
4. Set remote selector switch in the REMOTE
position (see Figure 27).
5. Press in and turn control knob clockwise
to the OFF position (see Figure 27).
6. Wait ve (5) minutes to clear out any gas.
Then smell for gas, including near the oor.
If you smell gas, STOP! Follow “B” in the
safety information, page 17. If you don’t
smell gas, go to the next step.
7. Press in and turn control knob counter-
clockwise to the PILOT position.
Press in control knob for ve (5) seconds
(see Figure 27).
Note: You may be running this heater for
the rst time after hooking up to gas sup-
ply. 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.
8. With control knob pressed in, press and
release ignitor button. This will light pilot.
The pilot is attached to the rear of the front
burner. If needed, keep pressing ignitor
button until pilot lights.
Figure 26 - Control Knob (Shown in
the OFF Position) and Ignitor Button
Location
Control Knob
Ignitor ButtonControl Cover Log
ON REMOTE OFF
PRG
Control Knob
Ignitor
Button
Figure 27 - Remote Selector Switch,
Control Knob and Ignitor Button
Remote Selector Switch
(Left Side of Log Set)
OPERATION
Continued
www.desatech.com
121486-01F 19
OPERATION
Continued
Note: If pilot does not stay lit, contact a
qualied service person or gas supplier
for repairs. Until repairs are made, light
pilot with match. To light pilot with match,
see Manual Lighting Procedure.
9. Keep control knob pressed in for 30 sec-
onds after lighting pilot. After 30 seconds,
release control knob.
• If control knob does not pop out when
released, contact a qualified service
person or gas supplier for repairs.
Note: If pilot goes out, repeat steps 4
through 8.
10.Slightly push in and turn control knob coun-
terclockwise to the ON position.
11. Press the on/off key on the remote control
to turn on appliance main burner. Wait at
least 5 seconds before setting desired
ame height.
12. Select manual ame height function by
pressing MODE button on remote until
a ame is shown in lower left corner of
display. Use the UP/DOWN arrow button
to set desired ame height (see Figure 32,
page 20).
13. Replace control cover log (see Figure 26,
page 18).
14. To leave pilot lit and shut off burners only,
press the on/off key on remote control
or turn control knob clockwise to
PILOT position.
CAUTION: Do not try to ad-
Note: The pilot ame on natural gas units will
have a slight curve, but ame should be blue
and have no yellow or orange color.
Figure 28 - Pilot (Propane/LP)
Ignitor
Electrode
Pilot Burner
Figure 29 - Pilot (Natural)
Ignitor
Electrode
Pilot Burner
TO TURN OFF GAS
1. Press on/off key on remote control and
turn control knob clockwise to the
OFF position (see Figure 27, page 18).
2. Close equipment shutoff valve (see Fig-
ure 18, page 15).
MANUAL LIGHTING
1. Follow steps 1 through 7 under Lighting
Instructions, page 18.
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 steps 9 through 11
under Lighting Instructions in column 1.
HAND-HELD
WARNING: Make sure your
-
-
For installing or replacing batteries in remote
control or receiver, see Installing Batteries in
Remote Control and Receiver on page 12.
When batteries in hand-held remote control
are low, an icon will appear on display (see
Figure 30).
ON
Figure 30 - Low Battery Display
When batteries in receiver are low, no acous-
tic signal will be given when ON/OFF button
is pressed. If batteries in receiver are low,
replace can be switched on manually by
moving remote selector switch to ON (see
Figure 27, page 18).
www.desatech.com 121486-01F20
OPERATION
Continued
FAHRENHEIT/CELSIUS INDICATOR
You can set your hand-held remote control to
display the temperature in either Fahrenheit or
Celsius. With remote control off, press THER-
MOSTAT button and MODE button at the same
time. This will toggle the display from °F to °C.
Figure 31 - Remote Control Display
Fahrenheit to Celsius
After lighting pilot, let pilot ame burn for about
one minute. Slide remote selector switch to
REMOTE position. You can now turn the
burner on and off with the remote.
IMPORTANT: Do not leave selector switch in
the REMOTE or ON position when pilot is not
lit. This will drain batteries.
When any button is pushed on remote control,
the LCD display will glow blue. The blue glow
will go off after several seconds if no action is
being taken with remote.
ON/OFF
Push ON/OFF button and burners will come
on in high position (see Figure 32). A beep
from the receiver conrms the command.
Push ON/OFF button again and burners will
turn off. A beep from the receiver conrms
the command.
Figure 32 - Hand-Held Remote Control
ON/OFF
MODE
UP/ DOWN
Arrows
THERMOSTAT
LCD
Display
ON ON
MAX
Figure 33 - Remote Control Display of
Flame Height Minimum and Maximum
MINIMUM MAXIMUM
FLAME HEIGHT
This function allows you to control the height
of the ames through 5 levels. Select manual
ame height function by pressing MODE button
until a ame is shown in lower left corner of
display. Use the UP/DOWN arrow button to set
desired ame height (see Figure 32). A beep
from the receiver conrms the command.
ROOM THERMOSTAT
The remote control can operate as a room
thermostat. The thermostat can be set to a
desired temperature to control the comfort
level in the room.
To activate, press THERMOSTAT button on
remote control (see Figure 32). The word
ON will appear to the right of temperature
bulb graphic on display (see Figure 34, page
21). Use UP/DOWN arrow button to set de-
sired room temperature. Control system will
cycle replace on or off to maintain selected
temperature.
This manual suits for next models
1
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