Design Dynamics VTD-18N-PDG Quick start guide
For more information, visit www.desatech.com
WARNING: If the information in this manual is not fol-
— WHAT TO DO IF YOU SMELL GAS
• Do not touch any electrical switch; do not use any
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VTD-18N-PDG, VTD-18P-PDG
VTD-24N-PDG, VTD-24P-PDG
GAS LOG VENTED DECORATIVE APPLIANCE
OWNER’S OPERATION AND INSTALLATION MANUAL
VTD-18N-BTB, VTD-18P-BTB
VTD-24N-BTB, VTD-24P-BTB
www.desatech.com 111826-02J2
SAFETY INFORMATION
TABLE OF CONTENTS
Safety Information ............................................... 2
Local Codes......................................................... 4
Product Identication........................................... 5
Unpacking............................................................ 5
Product Features................................................. 5
Optional Remote Control Accessories................. 5
Installation ........................................................... 6
Operating Heater............................................... 10
Inspecting Burners ............................................ 13
Cleaning and Maintenance................................ 14
Specications .................................................... 14
Wiring Diagram.................................................. 14
Troubleshooting................................................. 15
Service Hints ..................................................... 19
Technical Service............................................... 19
Replacement Parts............................................ 19
Accessories ....................................................... 19
Illustrated Parts Breakdown and Parts List........ 20
Warranty Information ...........................Back Cover
-
-
teration, service or main-
tenance can cause in-
Refer to this manual for
correct installation and
For assistance or addi-
tional information con-
-
stalled in an aftermarket,*
-
-
ance is for installation
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constructed of noncom-
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-
-
to the National Fuel Gas
Codes, ANSI Z233.1/NFPA
54,Section5.3,AirforCom-
bustion and Ventilation.
State of Massachusetts:
The installation must
the Commonwealth of
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111826-02J 3
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known to the State of California
Early signs of carbon
monoxide poisoning resemble the u, with head-
aches, dizziness or nausea. If you have these signs,
the heater may not be working properly. Get fresh
air at once! Have heater serviced. Some people
are more affected by carbon monoxide than others.
These include pregnant women, people with heart
or lung disease or anemia, those under the inuence
of alcohol and those at high altitudes.
Natural and pro-
pane/LP gases are odorless. An odor-making
agent is added to these gases. The odor helps you
detect a gas leak. However, the odor added to the
gas can fade. Gas may be present even though no
odor exists.
Make certain you read and understand all warn-
ings. Keep this manual for reference. It is your
guide to safe and proper operation of this heater.
this heater or its controls can
SAFETY INFORMATION
Continued WARNING: Do not use a
-
WARNING: Do not allow fans
will remain hot for a time after
-
dren when they are in the room
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SAFETY INFORMATION
Continued
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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) in-
side 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. Never install log set
• in a recreational vehicle
• where curtains, furniture, clothing or other
ammable objects are less than 42" from
the front, tip or sides of the log set
• in high trafc areas
• in windy or drafty areas
5.
Before installing in a solid fuel burning replace,
the chimney ue and rebox must be cleaned
of soot, creosote, ashes and loose paint by a
qualied chimney cleaner. Creosote will ignite if
highly heated. Inspect chimney ue for damage.
If damaged, repair ue before operating heater.
6. Do not burn solid-fuel in the replace after
installing the log set. Do not use this log set
to cook food or burn paper or other objects.
7.
This log set is designed to be smokeless. If logs
ever appear to smoke, turn off appliance and call
a qualied service person. Note: During initial
operation, slight smoking could occur due to log
curing and burning of manufacturing residues.
You may wish to add more ventilation by opening
a window.
8. To reduce the creation of soot, follow the
instructions in Cleaning and Maintenance,
page 14.
9. Before using furniture polish, wax, carpet
cleaner or similar products, turn heater off. If
heated, the vapors from these products may
create a white powder residue within burner
box or on adjacent walls or furniture.
10. Do not run heater
• where ammable liquids or vapors are used
or stored
• under dusty conditions
11. Do not use heater if any part has been exposed
to or under water. Immediately call a qualied
service technician to inspect the room heater
and to replace any part of the control system and
any gas control which has been under water.
12. Do not operate heater if any log is broken. Do
not operate heater if a log is chipped (dime-
sized or larger).
13. Turn heater off and let cool before servicing or
repairing. Make sure the selector switch is in
the OFF position. Only a qualied service per-
son should install, service or repair heater.
14. To prevent performance problems, do not
use propane/LP fuel tank of less than 100 lb.
capacity (propane/LP units only).
15. The installation and provisions for combus-
tion and ventilation air must conform with
the National Fuel Gas Codes, ANSI Z233.1/
NFPA 54, Section 5.3, Air for Combustion
and Ventilation.
16. 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 lat-
est 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
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111826-02J 5
PRODUCT
IDENTIFICATION
Figure 1 - Product Identication
Hand-Held
Remote Control
Chassis
Assembly
Control
Knob
Log Set Assembly
UNPACKING
CAUTION: Do not remove the
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1. Remove log set assembly from carton.
Note: Do not pick up assembly by logs. This
could damage heater. Always handle assembly
by grate.
2. Remove control cover oor media components.
3. Remove all protective packaging applied to
log set for shipment.
3. Check all items for any shipping damage. If
damaged, promptly inform dealer where you
bought heater.
PRODUCT FEATURES
This unitized gas log set is tested and approved to
ANSI Z21.60a and CSA 2.26a-2000 as a vented
decorative appliance.
SAFETY DEVICE
This heater has a pilot with an Oxygen Deple-
tion Sensing (ODS) safety shutoff system. The
ODS/pilot shuts off the heater if there is not
enough fresh air.
ELECTRONIC IGNITION SYSTEM
This system has an electronic ignitor. This system
requires no matches or other sources to light heater.
Receiver requires 4 AA batteries (included), hand-
held remote control requires a 12-volt battery and
a 3-volt button cell battery for the LCD display
(both included).
OPTIONAL REMOTE
CONTROL ACCESSORIES
There are two optional remote accessories available
for the PDG log set models that come standard with
the BTB log set models:
• wall switch
• hand-held ON/OFF remote
See Accessories, page 19.
Chassis
Assembly
Log Set
Assembly
Selector
Switch
Flame
Adjustment
Knob
Control
Knob Selector
Switch
Flame
Adjustment
Knob
BTB Models
Remote
Receiver
Electronic
Ignitor
Electronic
Ignitor
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INSTALLATION
WARNING: Make sure the
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cleaned of soot, creosote, ashes
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WARNING: Installation, ser-
-
-
nents listed in these instructions
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nents or accessory items will
and may result in a hazardous
INSTALLATION AND CLEARANCES
Figure 2 shows technical information regarding
installation of your gas log set. Please make sure
all specications shown are applicable before
installation is attempted.
Note: This vented appliance must be installed
only in a solid-fuel burning or UL127 factory-
built replace with a working ue and constructed
of noncombustible material. The replace must
include a working ue and venting system with
minimum openings shown in Figure 3.
LOG SIZING REQUIREMENTS
M
Flue
Size
Size
Front
Width
Rear*
Width
18" 17" 14" 24" 20" 8"
24" 17" 14" 28" 22" 8"
*Measured at 14" depth.
FUEL INLET
MANIFOLD
NG 7" 10.5" 3.5"
LP 11" 14" 10"
Figure 2 - Technical Information Chart
Figure 3 - Sizes and Clearances
Use the correct gas type (natural or propane/LP)
for your unit. If your gas supply is not correct, do
not install heater. Call dealer where you bought
heater for proper type heater.
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INSTALLATION
The replace chimney ue and vent must be draft-
ing properly. To check vent for proper drafting:
Light a tightly rolled newspaper on one end and
place it at the inside front edge of replace. Ob-
serve smoke and be sure vent is properly drawing
it up the chimney. If smoke spills out into the room,
extinguish ame and remove any obstruction until
proper venting is achieved.
The chimney ue damper must be xed open to
provide a minimum of 43 square inches of free
air opening during operation of this log set. A
multipurpose damper clamp is provided to x the
damper in position.
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111826-02J 7
INSTALLATION
Continued
Damper
Clamp Damper
Damper Damper
Clamp
Masonry Fireplace Manufactured
Fireplace
Figure 4 - Attaching Damper Clamp
The minimum ue sizes shown in Figure 3, page
6, are based on a 6' chimney height using round
pipe. Your minimum ue size will vary based
on input rate and chimney height. Refer to the
National Fuel Gas Code ANSI Z223.1/NFPA 54,
Section 6.6 for details.
Secure damper stop clamp to edge of damper as
shown in Figure 4. I for any reason this clamp
doesn't work on your replace, another suitable
clamp or permanent stop must be installed or
damper blade must be removed.
INSTALLING HEATER ASSEMBLY
CAUTION: Do not remove the
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-
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IMPORTANT: Make sure appliance is level. If
heater is not level, heater will not work properly.
Installation Items Needed
• control cover kit (provided with heater)
• approved exible gas hose (provided) (if al-
lowed by local codes)
• sealant (resistant to propane/LP gas, not
provided)
• pipe wrench
Note: Install optional remote control accessories
(see Accessories, page 19) before installing gas
log heater.
1. Apply pipe joint sealant lightly to male threads
of gas tting (not provided). Connect approved
exible gas hose to inlet side of gas control (see
Figure 5). IMPORTANT: Hold gas tting with
wrench when connecting exible gas hose.
2.
Position heater assembly in replace.
3. Connect to gas supply. See Connecting to
Gas Supply.
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Gas Control
Flexible
Gas Hose
(if allowed
by local
codes)
Figure 5 - Attaching Flexible Gas Hose to
Heater Gas Regulator
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CAUTION: Never connect
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WARNING: Never connect
Installation Items Needed
Before installing heater, make sure you have the
items listed below.
• external regulator (for propane/LP units only,
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
• approved exible gas line with gas connector
(if allowed by local codes) (provided)
* A CSA design-certied equipment shutoff valve
with 1/8" NPT tap is an acceptable alternative to
test gauge connection. Purchase the optional CSA
design-certied equipment shutoff valve from your
dealer. See Accessories, page 19.
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 reduce incoming gas pres-
sure, heater regulator damage could occur. Install
external regulator with the vent pointing down as
shown in Figure 6. Pointing the vent down protects
it from freezing rain or sleet.
Figure 6 - External Regulator With Vent
Pointing Down
Propane/LP
Supply Tank External
Regulator
Vent
Pointing
Down
INSTALLATION
Continued
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 7).
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.
* Purchase the optional CSA design-certified
equipment shutoff valve from your dealer. See
Accessories, page 25.
** Minimum inlet pressure for purpose of input
adjustment.
Figure 7 - Gas Connection
3" Minimum
CSA Design-Certied
Equipment Shutoff Valve
With 1/8" NPT Tap*
Approved
Flexible Gas
Hose (if allowed
by local codes)
Cap Pipe Tee
Nipple Joint
Sediment Trap
Natural Gas
From Gas Meter
(5" W.C.** to 10.5"
W.C. Pressure)
From External
Regulator
(11" W.C.** to
14" W.C.
Pressure)
To Gas
Control
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111826-02J 9
CAUTION: Make sure exter-
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der Connecting to Gas Supply,
1. Disconnect appliance with its appliance main
gas valve (control valve) and equipment
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 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 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 t-
tings for leaks.
1. Close equipment shutoff valve (see Figure 8).
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.
INSTALLATION
Continued
Check your building codes for any special re-
quirements 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.
We recommend that you install a sediment trap in
supply line as shown in Figure 7, page 8. Locate
sediment trap where it is within reach for clean-
ing. 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.
CHECKING GAS CONNECTIONS
and connections, internal and
external to unit, for leaks after
WARNING: Never use an
-
Figure 8 - Equipment Shutoff Valve
Open
Closed
Equipment
Shutoff Valve
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INSTALLATION
Continued
Figure 10 - Checking Gas Joints for
Propane/LP Gas
Control Valve
Location
Propane/LP
Supply Tank Equipment Shutoff Valve
Figure 9 - Checking Gas Joints for
Natural Gas
Gas Meter
Equipment Shutoff Valve
Control Valve Location
OPERATING HEATER
FOR YOUR SAFETY
READ BEFORE LIGHTING
WARNING: If you do not fol-
low these instructions exactly,
-
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 oor because some gas is heavier than
air and will settle on the oor.
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 re 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 qualied service tech-
nician or gas supplier. Force or attempted
repair may result in a re or explosion.
D. Do not use this appliance if any part has
been under water. Immediately call a
qualied service technician to inspect the
appliance and to replace any part of the
control system and any gas control which
has been under water.
3. Check all joints from gas meter to equipment
shutoff valve for natural gas or propane/LP sup-
ply to equipment shutoff valve for propane/LP
(see Figure 9 or 10). Apply noncorrosive leak
detection uid to all joints. Bubbles forming
show a leak.
4. Correct all leaks at once.
CONNECTIONS
1. Open equipment shutoff valve (see Figure 8,
page 9).
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 equipment shutoff valve
to control valve (see Figure 9 or 10). Apply
noncorrosive leak detection uid to all joints.
Bubbles forming show a leak.
5. Correct all leaks at once.
6. Light heater (see Operating Heater). Check
all other internal joints for leaks.
7. Turn off heater (see To Turn Off Gas to Appli-
ance, page 10).
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111826-02J 11
OPERATING HEATER
Continued
5. 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, page10. If you don’t
smell gas, go to the next step.
6. Press in and turn control knob counter-
clockwise to the PILOT position.
Press in control knob for ve (5) seconds
(see Figure 11).
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.
7. With control knob pressed in, press ignitor
button. This will light pilot. The pilot is at-
tached to the front burner. If needed, keep
pressing ignitor button until pilot lights.
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.
8. Keep control knob pressed in for 30 seconds
after lighting pilot.After 30 seconds, release
control knob.
• If control knob does not pop out when
released, contact a qualied service person
or gas supplier for repairs.
Note: If pilot goes out, repeat steps 4
through 8.
9. Slightly push in and turn control knob coun-
terclockwise to the ON position.
10. Wait one minute and switch selector switch
to the ON position to light burners.
11. Set ame adjustment knob to any level
between HI and LO.
CAUTION: Do not try to ad-
Figure 11 - Control Knob and Ignitor
Button Locations
L
O
I
H
O
F
F
P
I
L
O
T
O
N
AUTO
OFF
ON
Control Knob
Ignitor Button Flame Adjustment Knob
Selector Switch
LIGHTING
INSTRUCTIONS
-
Remain clear of the hearth area
-
-
1. STOP! Read the safety information on
page 10.
2. Make sure equipment shutoff valve is fully
open.
3. Set selector switch in the OFF position.
4. Turn motor knob clockwise to the
OFF position.
WARNING: Burners will
come on automatically within
one minute when the selector
www.desatech.com 111826-02J12
OPERATING HEATER
Continued
WARNING: Make sure selec-
when you are away from home
-
ance will come on automatically
with selector switch in the ON
TO TURN OFF GAS
1. Turn control knob clockwise to the
OFF position.
2a. Set selector switch in the OFF position.
2b.
Set selector switch in the OFF position to
prevent draining battery.
You may shut off the burners and keep the pilot
lit by doing one of the following:
1. Turn control knob clockwise to the
PILOT position.
2. Use remote control manual OFF button.
3. Set selector switch in the OFF position.
MANUAL LIGHTING
1. Follow steps 1 through 6 under Lighting
Instructions, page 16.
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, Lighting Instructions, page 17.
Figure 12 - Pilot (Remote Shown)
Natural
REMOTE CONTROL
1. After lighting, let pilot flame burn for
about one minute. Turn control knob to
ON position. Adjust ame adjustment knob
anywhere between HI and LO. Set toggle
selector switch to AUTO. Slide remote
selector switch to REMOTE position (see
Figure 13). Note: The burner may light if
hand-held remote was on when selector
switch was last turned off. You can now
turn the burner on and off with the hand-
held remote control unit.
IMPORTANT: Do not leave the selector
switch in the REMOTE or ON position
when the pilot is not lit. This will drain the
battery.
2. Press ON/OFF button to turn burners on
and off. When turning burners off, the pilot
will remain lit.
IMPORTANT: Be sure to press ON/OFF
buttons on hand-held remote control unit for
up to 3 seconds to assure proper operation.
Batteries: (See instructions with remote for
removing and installing batteries)
Transmitter requires 12V (A-23) and 3V button
cell for LCD (both included)
Remote receiver requires 4 AA (1.5V) alkaline
batteries (included)
: 303.875 MHz
L
O
I
H
O
F
F
P
I
L
O
T
O
N
OFF REMOTE ON
AUTO
OFF
ON
Figure 13 - Control Knob and Ignitor
Button Locations for Remote Control
Control Knob
Ignitor
Button
Remote Selector
Switch
Flame
Adjustment
Knob
Selector Switch
in AUTO Position
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111826-02J 13
INSPECTING BURNERS
Check pilot ame pattern and burner ame pat-
terns often.
Figure 14 shows a correct pilot ame pattern.
Figure 15 shows an incorrect pilot ame pattern.
The incorrect pilot flame is not touching the
thermocouple. When the thermocouple cools, the
heater will shut down.
If pilot ame pattern is incorrect, as shown in
Figure 15
• turn heater off (see To Turn Off Gas to Appli-
ance, page 12)
• see Troubleshooting, page 15
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 15 - Incorrect Pilot Flame Pattern
(Your Pilot May Differ from Pilots Shown)
Figure 14 - Correct Pilot Flame Pattern
(Your Pilot May Differ from Pilots Shown)
Figure 16 shows correct burner ame pattern.
If burner ame pattern is incorrect, as shown in
Figure 17
• turn appliance off (see To Turn Off Gas to Ap-
pliance, page 12
• see Troubleshooting, page 15
Figure 16 - Correct Burner Flame Pattern
Figure 17 - Incorrect Burner Flame
Pattern
Pilot Burner
Thermocouple
Thermocouple
Pilot Burner
Thermocouple
Thermocouple
Yellow Flames
with Orange
Streaks
Dark Orange
Flames
www.desatech.com 111826-02J14
CLEANING AND
MAINTENANCE
WARNING: Turn off heater
-
-
-
Only limited cleaning will be required under normal
use of this appliance. Dust front grate and top of
receiver/valve. Do not use cleaning uids to clean
logs or any other part of the appliance.
If after a period of use the ames start to exhibit
unusual shapes and behavior or burner fails to ignite
smoothly, burner holes may require cleaning. If this
happens, we recommend you contact your nearest
authorized service technician to get the appliance
serviced.
• Keep area around log set clean and clear of de-
bris.
• Periodically inspect burner for foreign matter
blocking air inlet and ame holes.
• Once every year a qualied agency or certied
chimney sweep should examine and clean venting
system of replace.
SPECIFICATIONS
• Input Rating: 37,000/54,000 Btu/Hr
• Fuel: Natural Gas
• Ignition: Electronic
• Manifold Pressure: 3.5" W.C.
• Inlet Gas Pressure (in. of water):
Max. - 10.5", Min. - 5.0*
• Shipping Weight: 32 lbs.
• Input Rating: 30,000/46,000 Btu/Hr
• Fuel: Propane/LP Gas
• Ignition: Electronic
• Manifold Pressure: 10" W.C.
• Inlet Gas Pressure (in. of water):
Max.- 14", Min. - 11"*
• Shipping Weight: 32 lbs.
• Input Rating: 41,000/58,000 Btu/Hr
• Fuel: Natural Gas
• Ignition: Electronic
• Manifold Pressure: 3.5" W.C.
• Inlet Gas Pressure (in. of water):
Max. - 10.5", Min. - 5.0*
• Shipping Weight: 34 lbs.
• Input Rating: 41,000/58,000 Btu/Hr
• Fuel: Propane/LP Gas
• Ignition: Electronic
• Manifold Pressure: 10" W.C.
• Inlet Gas Pressure (in. of water):
Max.- 14", Min. - 11"*
• Shipping Weight: 34 lbs.
* For purpose of input adjustment
WIRING DIAGRAM
AUTO
OFF
ON
Thermopile
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111826-02J 15
TROUBLESHOOTING
Note: All troubleshooting items are listed in order of operation.
1. Ignitor electrode not connected
to ignitor cable
2. Ignitor cable pinched or wet
3. Electronic ignitor battery is
weak
4. Broken ignitor cable
5. Bad electronic ignitor
6. Ignitor electrode positioned
wrong or broken
1. Gas supply turned off or equip-
ment shutoff valve closed
2. Control knob not in PILOT
position
3. Control knob not pressed in
while in PILOT position
4. Air in gas lines when in-
stalled
5. Depleted gas supply (propane/
LP only)
6. ODS/pilot is clogged
7. Gas regulator setting is not
correct
REMEDY
1. Reconnect ignitor cable
2. Free ignitor cable if pinched
by any metal or tubing. Keep
ignitor cable dry
3. Replace battery
4. Replace ignitor cable
5. Replace electronic ignitor
6. Replace pilot assembly
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 ig-
niting operation until air is
removed
5. Contact local propane/LP gas
company
6. Clean ODS/pilot (see Cleaning
and Maintenance, page 14) or
replace ODS/pilot assembly
7. Replace gas regulator
When ignitor button is pressed,
there is no spark at ODS/pilot
When ignitor button is pressed,
there is spark at ODS/pilot but
no ignition
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TROUBLESHOOTING
Continued
ODS/pilot lights but ame goes
out when control knob is re-
leased
Burner does not light after ODS/
pilot is lit
Delayed ignition of burner
Burner backring during com-
bustion
1.
Control knob not fully pressed in
2. Control knob not pressed in
long enough
3. Safety interlock system has
been triggered
4. Equipment shutoff valve not
fully open
5. Pilot ame not touching ther-
mocouple, which allows ther-
mocouple to cool, causing
pilot flame to go out. This
problem could be caused by
one or both of the following:
A) Low gas pressure
B) Dirty or partially clogged
ODS/pilot
6. Thermocouple connection
loose at control valve
7. Thermocouple damaged
8. Control valve damaged
1. Inlet gas pressure is too low
2. Burner orice clogged
3. Remote selector in OFF
position
4. Wire disconnected from gas
control
1. Manifold pressure is too low
2. Burner orice clogged
1. Burner orice is clogged or
damaged
2. Damaged burner
3. Gas regulator defective
REMEDY
1. Press in control knob fully
2. After ODS/pilot lights, keep
control knob pressed in 30
seconds
3. Wait one minute for safety in-
terlock system to reset. Repeat
ignition operation
4. Fully open equipment shutoff
valve
5. A) Contact local natural or
propane/LP gas company
B) Clean ODS/pilot (see
Cleaning and Maintenance,
page 14) or replace ODS/pilot
assembly
6. Hand tighten until snug, then
tighten 1/4 turn more
7. Replace pilot assembly
8. Replace control valve
1. Contact local natural or pro-
pane/LP gas company
2. Clean burner (see Cleaning
and Maintenance, page 14)
or replace burner orice
3. Put remote selector in ON
position
4. See Wiring Diagram, page 14
1. Contact local natural or pro-
pane/LP gas company
2. Clean burner (see Cleaning
and Maintenance, page 14)
or replace burner orice
1. Clean burner (see Cleaning
and Maintenance, page 14)
or replace burner orice
2. Replace damaged burner
3. Replace gas regulator
www.desatech.com
111826-02J 17
TROUBLESHOOTING
Continued
Orange ame in burner during
burner combustion
Slight smoke or odor during initial
operation
Heater produces a whistling noise
when burner is lit
White powder residue forming
within burner box or on adjacent
walls or furniture
Remote does not function
Heater produces a clicking/tick-
ing noise just after burners are lit
or shut off
1. Not enough air
2. Gas regulator defective
1. Residues from manufacturing
processes and logs curing
1. Turning control knob to HI
position when burner is cold
2. Air in gas line
3. Air passageways on heater
blocked
4. Dirty or partially clogged
burner orice
1. When heated, vapors from
furniture polish, wax, carpet
cleaners, etc. turn into white
powder residue
1. Battery is not installed. Battery
power is low
1. Metal expanding while heating
or contracting while cooling
REMEDY
1. Check burner for dirt and
debris. If found, clean burner
(see Cleaning and Mainte-
nance, page 14)
2. Replace gas regulator
1. Problem will stop after a few
hours of operation
1. Turn control knob to LO
position and let warm up for
a minute
2. Operate burner until air is
removed from line. Have gas
line checked by local natural
or propane/LP gas company
3. Observe minimum installation
clearances (see pages 6)
4. Clean burner (see Cleaning
and Maintenance, page 14)
or replace burner orice
1. Turn heater off when using
furniture polish, wax, carpet
cleaners, or similar products
1. Replace batteries in receiver
and remote control
1. This is common with most
heaters. If noise is excessive,
contact qualified service
person
www.desatech.com 111826-02J18
TROUBLESHOOTING
Continued
-
IMPORTANT: 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.
1. Heater burning vapors from
paint, hair spray, glues, clean-
ers, chemicals, new carpet,
etc. (See IMPORTANT state-
ment above)
2. Low fuel supply (propane/LP
only)
3. Gas leak.
1. Not enough fresh air is avail-
able
2. Low line pressure
3. ODS/pilot is partially
clogged
1. Gas leak.
2. Control valve or gas control
defective
1. Foreign matter between con-
trol valve and burner
2. Gas leak.
REMEDY
1. Open ue to maximum. Stop
using odor causing products
while heater is running
2. Rell supply tank (propane/LP
only)
3. Locate and correct all leaks
(see Checking Gas Connec-
tions, page 9)
1. Open window and/or door for
ventilation
2. Contact local natural or pro-
pane/LP gas company
3. Clean ODS/pilot (see Cleaning
and Maintenance, page 14)
1. Locate and correct all leaks
(see Checking Gas Connec-
tions, page 9)
2. Replace control valve or gas
control
1. Take apart gas tubing and
remove foreign matter
2. Locate and correct all leaks
(see Checking Gas Connec-
tions, page 9)
Heater produces unwanted
odors
Heater shuts off in use (ODS
operates)
Gas odor even when control knob
is in OFF position
Gas odor during combustion
www.desatech.com
111826-02J 19
SERVICE HINTS
• pilot will not stay lit
• burners will have delayed ignition
• heater will not produce specied heat
• propane/LP gas supply may be low
You may feel your gas pressure is too low. If
so, contact your local propane/LP or natural gas
supplier.
TECHNICAL SERVICE
You may have further questions about installation,
operation, or troubleshooting. If so, contact DESA’s
Technical Service Department at 1-866-672-6040.
When calling please have your model and serial
numbers of your appliance ready.
You can also visit DESA’s technical services web
site at .
REPLACEMENT PARTS
Note: Use only original replacement parts. This
will protect your warranty coverage for parts
replaced under warranty.
Contact authorized dealers of this product. If
they can’t supply original replacement part(s),
call DESA’s Technical Service Department at
1-866-672-6040.
When calling DESA, have ready
• your name
• your address
• model and serial numbers of your appliance
• how appliance was malfunctioning
• type of gas used (propane/LP or natural gas)
• purchase date
Usually, we will ask you to return the part to the
factory.
Contact authorized dealers of this product. If
they can’t supply original replacement part(s),
call DESA at 1-866-672-6040 for referral infor-
mation.
When calling DESA, have ready
• model number of your appliance
• the replacement part number
ACCESSORIES
Purchase these heater accessories from your local
dealer. If they can not supply these accessories, call
DESA at 1-866-672-6040 for referral information.
You can also write to the address listed on the back
page of this manual.
For all models. Equipment shutoff
valve with 1/8" NPT tap. Fits 1/2"
NPT pipe.
RECEIVER AND HAND-HELD
For PDG models. Allows the gas log heater to
be turned on and off by using a hand-held remote
control. This remote comes installed in BTB
models.
REMOTE CONTROL RECEIVER
For PDG models only. Used for mounting
remote control receiver to unit base. WALL-
For all models. Allows the gas log heater to be
turned on and off with a wall switch. This switch
is included with al models.
For all models. Permanently opens chimney ue
damper for vented operation. This is included
with all models.
For all models. Order when additional rock is
desired. (1.8 lb. bag)
CLEANING KIT - GCK
For all models. Your vent-free gas appliance re-
quires regular cleaning and maintenance to prevent
performance problems. This kit gives you the tools
and instructions to make it easy to clean all critical
areas of your appliance.
For all models. A care and maintenance video is
available by calling 1-866-672-6040.
www.desatech.com 111826-02J20
ILLUSTRATED PARTS BREAKDOWN
19
4
3
5
64
4
7
1
20
8
20
18
9
2
10
13
10
4
11
12
15
14 17
16
Installed in BTB
Models Only
Log Set,
Ceramic Burner
and Ramp Pan
are Ordered
as an Assembly
Air Shutter Installation Note:
For Natural Gas: Fully Closed
For Propane/LP Gas: Fully Open
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