Desa Vanguard VVSR18 Quick start guide
For more information, visit www.desatech.com
FOR YOUR SAFETY
vapors or liquids in the vicinity of this or any other
appliance.
— WHAT TO DO IF YOU SMELL GAS
-
VENTED DECORATIVE NATURAL GAS LOGS
OWNER’S OPERATION AND INSTALLATION MANUAL
VANGUARD BURNER MODELS
VVSR18, VVSR24, VVDR18, VVDR24 AND VVDR30
FOR USE WITH LOG SET MODELS
FMI BURNER MODELS
FVSR18, FVSR24, FVDR18, FVDR24 AND FVDR30
FOR USE WITH LOG SET MODELS
O-TL REPORT
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SAFETY
-
installation and operational
procedures. For assistance or
agency or the gas supplier.
-
stalled. Provisions for adequate
National Fuel Gas Codes, ANSI
Z233.1/NFPA 54, Air for Combus-
tion and Ventilation.
WARNING: This appliance
is for installation only in a
state or local codes.
-
State of Massachusetts: The
Massachusetts.
WARNING: This product con-
of this log set can cause serious
Early signs of
carbon monoxide poisoning resemble the
u, with headaches, dizziness or nausea. If
you have these signs, the log set may not
be working properly.
Have log set serviced. Some people are
more affected by carbon monoxide than oth-
ers. These include pregnant women, people
with heart or lung disease or anemia, those
under the inuence of alcohol and those at
high altitudes.
TABLE OF CONTENTS
Safety .................................................................. 2
Local Codes......................................................... 4
Unpacking............................................................ 4
Product Identication ........................................... 5
Optional Product Features................................... 5
Installation ........................................................... 5
Operation ........................................................... 14
Cleaning and Maintenance ................................ 15
Troubleshooting ................................................. 16
Service Hints ..................................................... 19
Technical Service............................................... 19
Replacement Parts ............................................ 19
Parts .................................................................. 20
Accessories ....................................................... 24
Warranty ..............................................Back Cover
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124183-01B 3
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Carefully supervise young chil-
Keep the appliance area clear
-
-
1. 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
2. Never install the log set
• in a recreational vehicle
• where curtains, furniture, clothing, or
other ammable objects are less than
42" from the front, top, or sides of the
log set
• in high trafc areas
• in windy or drafty areas
3. 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. Inspect
chimney ue for damage. If damaged, repair
ue before operating appliance.
Natural Gas: Natural gas is 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 log set.
WARNING: Any change to
this log set or its controls can
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otheraccessorynotapproved for
WARNING: This appliance
is equipped for natural gas. An
optional propane/LP conversion
propane/LP gas.
WARNING: Installed decora-
this gas appliance.
and draperies.
Do not place clothing or other
the appliance. Never place any
SAFETY
Continued
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4. This log set is designed to be smokeless.
If logs ever appear to smoke, turn off appli-
ance and call a qualied service person.
Note: During initial operation, slight smok-
ing could occur due to log curing and
the burning of manufacturing residues.
You may wish to add more ventilation by
opening a window.
5. To reduce the creation of soot, follow the
instructions in Cleaning and Maintenance,
page 15.
6. The installation and provisions for combus-
tion and ventilation air must conform with the
National Fuel Gas Code, ANSI Z233.1/NFPA
54, Air for Combustion and Ventilation.
7. Do not run log set
• where ammable liquids or vapors are
used or stored
• under dusty conditions
8. 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.
SAFETY
Continued
9. Do not use appliance if any part has been
exposed to or under water. Immediately
call a qualied service technician to in-
spect the room appliance and to replace
any part of the control system (if using
GA9050A-1 or GA9150A) and any gas
control which has been under water.
10. To help prevent breakage, new logs must
be broken-in (see Curing Logs page 14).
11. Turn log set off and let cool before servic-
ing, installing, or repairing. Only a qualied
service person should install, service, or
repair log set.
12. Provide adequate clearances around air
openings.
13. This vented gas log set may not be
installed in a bedroom or bathroom in
the Commonwealth of Massachusetts.
LOCAL CODES
Install and use log set 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
UNPACKING
-
1. Remove logs, hearth kit, pan materials,
and hardware from carton.
2. Remove all protective packaging applied
to logs and base 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.
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124183-01B 5
Figure 1 - Product Identication (Dual Burner Shown)
Hearth Kit Model ___________________
Serial Number _____________________
Log Set Model _____________________
Grate
Burner
Pan
Burner Manifold Burner Inlet
Fitting
Burner Clamp
Grate
Steps
OPTIONAL PRODUCT FEATURES
PRODUCT IDENTIFICATION
ON/OFF SAFETY VALVE/PILOT KIT
AND PROPANE/LP CONVERSION
An optional valve/safety pilot kit with a piezo
ignitor is available for this appliance. This sys-
tem requires no matches, batteries, or other
sources to light. You must use this optional
system for LP conversion. See Accessories,
page 24.
REMOTE CONTROL READY
PILOT KIT
An optional millivolt valve/safety pilot kit with
a piezo ignitor is available for this appliance.
This system requires no matches, batteries,
or other sources to light. This system may
be connected to a wall switch or hand-held
wireless remote control. See Accessories,
page 24.
REMOTE CONTROL ACCESSORIES
There is an optional hand-held ON/OFF re-
mote control that can be purchased separately
for this log set. You must use the millivolt
valve/safety pilot kit to use remote acces-
sories with this appliance. See Accessories,
page 24.
A wall switch is also available for this appli-
ance. You must use the millivolt valve/safety
pilot kit to use the wall switch with this appli-
ance. See Accessories, page 24.
INSTALLATION
the data plates attached to the
WARNING: Before installing
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-
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BURNER ORIFICE
LOG NATURAL PROPANE/LP
SIZE IN. NUM. IN. NUM.
VVSR18, FVSR18,
VVDR18, FVDR18
0.120 31 0.073 49
VVSR24, FVSR24
VVDR24, FVDR24
0.129 30 0.086 44
VVDR30, FVDR30 0.1405 28 0.089 43
Model
Burner
Description
Btu/Hr Input
Natural Gas
Btu/Hr Input
Propane/LP
Gas
Vent
Opening
VVSR18
FVSR18
18"
Single 50,000 40,000 8" dia.
VVSR24
FVSR24
24"
Single 60,000 50,000 8" dia.
VVDR18
FVDR18
18"
Dual 55,000 45,000 8" dia.
VVDR24
FVDR24
24"
Dual 65,000 55,000 8" dia.
VVDR30
FVDR30
30"
Dual 70,000 60,000 8" dia.
*Add 6" if safety valve/pilot is used
**At depth indicated
FUEL INLET PRESSURE
Min. Max.
NG 5.5" 10.5"
LP 11" 13"
Figure 2 - Technical Information Charts
MINIMUM FIREBOX SIZES
Models: VVSR18, FVSR18, VVDR18, FVDR18
Front Width* Back Width** Depth Height
28" 16" 14" 18"
Models: VVSR24, FVSR24, VVDR24, FVDR24
Front Width* Back Width** Depth Height
29 3/4" 17" 15 1/2" 18"
Models: VVDR30, FVDR30
Front Width* Back Width** Depth Height
36" 27" 18" 18"
INSTALLATION
Continued
-
this type of gas appliance. Only
-
hazardous condition.
FLUE OPENING SPECIFICATIONS
Note: This vented appliance must be installed
only in a solid-fuel burning replace with a
working ue and constructed of noncombus-
tible material.
The charts in Figure 2, indicate technical
information regarding the installation of your
gas log set. Please make sure that all of the
specications shown are applicable before
installation is attempted.
The replace must include a working ue and
venting system with the minimum openings
shown in the Figure 2.
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124183-01B 7
CHECK GAS TYPE
Use only natural gas. If your gas supply is not
natural gas, you must install ON/OFF Safety
Valve/Pilot Kit (see Accessories, page 24).
Call dealer where you bought log set.
If the replace does not have a gas supply
shutoff valve, one must be installed.
VENTING SPECIFICATIONS FOR
INSTALLATION
The replace chimney ue and vent must be
drafting properly. To check the vent for proper
drafting: Light a tightly rolled newspaper on
one end and place it at the inside front edge
of the replace. Observe the smoke and be
sure the vent is properly drawing it up the
chimney. If the smoke spills out into the room,
extinguish the ame and remove any obstruc-
tion until proper venting is achieved.
The chimney ue must remain open a mini-
mum of 3" at all times during the operation
of this log set.
For Massachusetts Residents Only
Installation of this vented gas log set in the
Commonwealth of Massachusetts requires
the damper be permanently removed or
welded in the fully open position.
INSTALLING DAMPER CLAMP
Secure the damper stop clamp provided to
the leading edge of the damper as shown in
Figure 3. If for any reason this clamp doesn't
work on your replace, another suitable clamp
or permanent stop must be installed, or the
damper blade must be cut or removed.
INSTALLATION
Continued
Damper
Clamp
Damper
Clamp
Damper
Manufactured
Fireplace
Masonry Fireplace
Figure 3 - Attaching Damper Clamp
Damper
CONNECTING TO GAS SUPPLY
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local codes.
Before installing log set, make sure you have
the items listed below.
• piping (check local codes)
• sealant (resistant to Propane/LP gas)
• equipment shutoff valve
• test gauge connection
• adjustable (crescent) wrench or pliers
• sediment trap
• tee joint
• pipe wrench
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your local codes. Use pipe of
Installation must include a 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 log set
(see Figure 4, page 8).
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.
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 a clogged burner injector.
sealant that is resistant to liquid
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We recommend that you install a sediment
trap in supply line as shown in Figure 4.
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 log set controls. If sediment trap is not
installed or is installed wrong, log set may
not run properly.
INSTALLATION
Continued
Figure 4 - Gas Connection
* Purchase the optional CSA design-certied
equipment shutoff valve from your dealer.
** Minimum inlet pressure for purpose of input
adjustment.
3" Minimum
Sediment Trap
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)
Tee
Joint
Pipe
Nipple
Cap
CHECKING GAS CONNECTIONS
WARNING:Testall gaspiping
installing or servicing. Correct
WARNING: Never use an
-
PRESSURE TESTING GAS SUPPLY
PIPING SYSTEM
1. Disconnect log set and its individual equip-
ment shutoff valve from gas supply piping
system.
2. Cap off open end of gas pipe where equip-
ment shutoff valve was connected.
3. Pressurize supply piping system by either
using compressed air or opening main gas
valve located on or near gas meter.
4. Check all joints of gas supply piping system.
Apply noncorrosive leak detection uid to
gas joints. Bubbles forming show a leak.
5. Correct all leaks at once.
6. Reconnect log set and equipment shutoff
valve to gas supply. Check reconnected
ttings for leaks.
Test Pressures Equal To or Less Than
1. Close equipment shutoff valve (see
Figure 5).
2. Pressurize supply piping system by either
using compressed air or opening main gas
valve located on or near gas meter.
3. Check all joints from gas meter to equip-
ment shutoff valve (see Figure 5). Apply
noncorrosive leak detection uid to gas
joints. Bubbles forming show a leak.
4. Correct all leaks at once.
Figure 5 - Checking Gas Joints
Gas Meter
Equipment
Shutoff
Valve
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124183-01B 9
HEARTH KIT ASSEMBLY AND
INSTALLATION
Only
1. Determine which side gas line will be
coming into replace.
2. Using a hammer and screw driver, remove
knockout plug from side of pan that cor-
responds to gas line (see Figure 6).
3. Unscrew burner inlet tting from burner
manifold.
4. Place burner manifold in pan with thread-
ed opening facing open knockout plug.
5. Using thread sealant (resistant to the ac-
tion of propane/LP gas) on larger end of
tting, screw burner inlet tting through
hole and into burner manifold (see Fig-
ure 6). Tighten using a wrench. If using
propane/LP gas, see Propane/LP Gas
Conversion, page 11.
6. Using burner clamp, screw, and nut pro-
vided, assemble clamp to pan (“U” style
and triple burners only). This will hold
burner manifold in place.
7. If using optional GA9050A-1 kit, go to
Optional GA9050A-1 On/Off Safety
Valve/Pilot Kit , page 10, for installation
instructions. If using optional GA9150A
kit, follow instructions included with kit for
installation and operation.
INSTALLATION
Continued
Burner Inlet
Fitting
Screw
Nut Burner Clamp
Burner Pan
(Front)
Burner Manifold
Knockout
Plugs
Burner Pan
(Front)
Knockout
Plugs
Burner Inlet
Fitting
SINGLE-BURNER
DUAL-FLAME
Burner
Manifold
Figure 6 - Installing Burner
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Installation and Gas Connection
1. Place burner pan assembly in center of
replace oor. Make sure front of pan
faces forward.
2. Thread gas supply tting to replace gas
supply pipe. Use thread sealant.
3. Install adapter tting onto burner inlet t-
ting using thread sealant on male threads
of burner inlet tting (see Figure 7). Adjust
to most convenient position.
4. Install gas connector tube to gas supply
tting. Carefully shape tube to attach to
adapter tting. Be careful not to cause
kinks in tube.
INSTALLATION
Continued
Figure 7 - Connecting Gas to Appliance
Adapter
Fitting
Gas
Connector
Tube
Burner Pan
Assembly
(Facing Front
of Fireplace)
VALVE/PILOT KIT ASSEMBLY
For additional convenience and safety, or for
propane/LP conversion, an optional ON/OFF
safety valve/pilot kit is available. See Acces-
sories, page 24.
propane/LP conversion.
Natural Gas Installation
1. Thread gas control valve onto burner inlet
tting (see Figure 8). Use thread sealant
on male threads of burner inlet tting. Hold
burner inlet tting with a wrench to prevent
overtightening connection to the burner.
Make sure control rod is facing the front
(see Figure 8).
2. Attach pilot gas line to pilot outlet of gas
control valve and tighten. Connect ther-
mocouple to rear of gas control valve.
See Figure 9. Do not overtighten. If us-
ing propane/LP gas, see Changing Pilot
Orice, page 12.
3. Install inlet tting into inlet opening of gas
control valve (see Figure 10). Use thread
sealant on male pipe threads.
4. Place burner pan assembly in center of
replace oor. Make sure front of pan
faces forward.
5. Thread gas supply tting to replace gas
supply pipe. Adjust to most convenient
position.
Burner Inlet
Fitting Gas Control
Valve
Burner Pan
Assembly
Figure 8 - Installing Gas Control Valve
Control Rod
Figure 9 - Gas Control Valve with
Thermocouple and Pilot
Figure 10 - Installing Inlet Fitting and
Gas Connector Tube
Thermocouple
and Line
Pilot and
Line
Gas Control
Valve
Gas Control
Valve
Gas Inlet
Fitting
Gas
Connector
Tube
Inlet
Opening
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124183-01B 11
6. Install gas connector tube to gas supply
tting. Carefully shape tube to attach to
adapter tting. Be careful not to cause
kinks in tube.
7. Test for leaks following instructions under
Testing Burner for Leaks, page 12.
8. Retighten and adjust location of gas control
as necessary. Gas control should be level,
with control rod to front.
9. Install cover to burner pan using screws
provided.
10. Install thermocouple, pilot, and ignitor onto
valve cover as shown in Figure 11. Use
provided screws.
11. Push control rod extension onto “D”
shaped control rod through center hole
in cover.
12. Install position decal and control knob
making sure to align marks with correct
stop positions of gas control. Pilot position
will allow knob to push in about 1/2". Align
decals in pilot position.
INSTALLATION
Continued
Figure 11 - Installing Cover, Control
Knob, and Piezo Ignitor
Piezo Ignitor
Control Rod
Extension
Screw
Valve Cover
Control
Knob
Thermocouple
Ignitor
Pilot
PROPANE/LP GAS CONVERSION
To convert to propane/LP gas, burner inlet
fitting and pilot orifice must be replaced.
Propane/LP burner inlet tting is supplied
with orice installed for a 24" log set. If you
have an 18" or 30" set, you must change this
orice also. See Figure 1, page 5 for product
identication.
Burner Inlet Fitting
1. Remove burner inlet tting from burner
pan assembly. DO NOT remove orice
from this tting. Propane/LP burner inlet
tting is included in hardware kit (see
Figure 12).
2. Be sure to use correct orice for your ap-
pliance. The hardware kit included with
this appliance contains two orices with
a cone-like shape. If you have an 18" set,
orice for burner inlet tting is red; for a 30"
set, it is black. If you have a 24" log set,
orice is already installed inside tting.
3. For an 18" or 30" set, use a 10 mm socket or
nut driver to remove orice from propane/LP
burner inlet tting. Choose the correct orice
for your log set size and install in place of
orice you just removed.
4. Using thread sealant (resistant to the ac-
tion of propane/LP gas) on larger end of
tting, screw burner inlet tting through
hole and into burner manifold (see Figure
13). Tighten using a wrench.
5 . Follow steps 1 through 12 under Natural
Gas Installation, page 10.
Figure 12 - Burner Inlet Fittings with
Injectors
Figure 13 - Remove Burner Inlet Fitting
Burner Inlet
Fitting for
Natural Gas
NATURAL
GAS
FITTING
PROPANE/
LP GAS
FITTING
Injector
for Natural
Gas
Injector for
Propane/
LP Gas
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The pilot is provided with a natural gas ori-
ce installed. For propane/LP gas you must
remove it and replace it with an propane/LP
orice. The accessory hardware kit contains
an propane/LP orice with a red stripe for
converting pilot.
1. Gently loosen and remove pilot line con-
nection from bracket (see Figure 14).
2. Replace injector (see Figure 14) with
propane/LP pilot injector with red stripe.
3. Replace and tighten pilot line to bracket.
4. Continue with step 3 under Natural Gas
Installation, page 10.
INSTALLATION
Continued
Figure 14 - Installing Propane/LP Pilot
Orice
Pilot Injector
TESTING BURNER FOR LEAKS
1. Generously apply noncorrosive leak de-
tection uid to all connections.
2. Light burner with shutoff valve no more
than half open and holding a match
slightly in front of pan (see Lighting In-
structions, page 14).
3. Inspect all connections for bubbles, raw
gas odor, or ame from any area other
than burner (leaks). If leaks are detected,
shut off gas valve immediately. Tighten,
or reassemble loose connection(s) using
pipe joint compound until burner system
is leak free.
4. When burner is tested and leak free,
observe individual tongues of ame on
burner.
Note: Burner design includes more ports
on the outside of the bar. Make sure that
all ports are clear and producing ame
evenly across burner. If any ports appear
blocked, clear them by removing burner
manifold and reaming ports with a modi-
ed paper clip or other suitable tool.
5. When nished testing, turn gas shutoff
valve OFF to extinguish all ames.
ADDING PAN MATERIAL
1. Open bag of ash bed material (vermiculite)
and spread it evenly across burner pan to
top. You may overow front and sides of
pan to cover entire pan and connecting
hardware. Do not cover GA9050A-1 or
GA9150A valve.
2. Open glowing embers and evenly cover
ash bed material (vermiculite) in burner
pan.
INSTALLING GRATE AND LOGS
1. Place grate over burner pan where two
outer horizontal supports on grate t into
two pan positioning notches in rear verti-
cal edge of pan.
2. Slide two rear log grate steps over two
outer horizontal supports on grate as
shown in Figure 15.
3. Place back log on grate onto grate steps
(see Figure 16, page 13).
4. Place front log(s) on grate and slide
forward against front bars on grate (see
Figure 16, page 13).
Figure 15 - Installing Grate (Pan Material
Not Shown)
Grate Grate Steps
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124183-01B 13
Figure 17 - Placement of Top Logs Logs
(Number and style may vary)
INSTALLATION
Continued
Figure 16 - Installing Front and Back
Logs (Number and style may vary)
5. Place smaller top logs onto bottom logs
(see Figure 17). Leave as much open
space between logs as possible to mini-
mize ame impingement and sooting.
Note: Logs may chip if they are handled
roughly or if hit together while being
placed.
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GAS SHUTOFF
VALVE OPERATION
Adjust the ame ON/OFF by turning gas shut-
off valve counterclockwise to open or
clockwise to close, as necessary.
Shutting Off Appliance
Turn gas shutoff valve clockwise to
OFF position.
CURING
LOGS
During the 2-3 hour appliance break-in period,
you may detect an odor from the appliance
as various paints and compounds used in
manufacturing of this log set cure. This is a
normal and temporary situation that is not
cause for alarm. However, you may want to
provide extra ventilation to the room during
this time.
To ensure proper curing of the logs:
• Ignite a 2" ame and maintain it for 1
hour.
• Burn logs in consecutive 1 hour periods
raising the ame an additional 2" to full
ame height for a total of three hours.
OPERATING
INSTRUCTIONS
Note: Operation instructions for GA9050A-1
Remote Ready Valve/Pilot Kit will be included
with the kit.
1. STOP! Read the safety information,
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 ve (5) minutes to clear out any gas.
Then smell for gas around log set and
near oor. If you smell gas, STOP! Refer
to the National Fuel Gas Codes, ANSI
Z233.1/NFPA 54, Air for Combustion and
Ventilation. If you don’t smell gas, go to
the next step.
5. Turn control knob counterclockwise
to the PILOT position and press
in. Keep control knob pressed in for ve
(5) seconds.
OPERATION
FOR YOUR SAFETY
READ BEFORE LIGHTING
WARNING: If you do not fol-
-
-
WHAT TO DO IF YOU SMELL GAS
LIGHTING
INSTRUCTIONS
1. STOP! Read the safety information,
above.
2. Turn gas shutoff valve to OFF.
3. Wait ve (5) minutes to clear out any gas.
If you then smell gas STOP! Follow the
safety information, above. If you don't
smell gas, go on to the next step.
4. Light a match and lay it on top of pan
material about 2" from end of supply side
of pan
5. Slowly turn gas shutoff valve ON until
burner ignites. If burner doesn’t ignite
within 10 seconds with match burning,
turn shutoff valve OFF and repeat steps
1 through 4 again.
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124183-01B 15
Note: You may be running this log set
for the rst time after hooking up to gas
supply. If so, the control knob may need
to be pressed in for 30 seconds. This will
allow air to bleed from the gas system.
• If control knob does not pop up when
released, contact a qualified service
person or gas supplier for repairs.
6. With control knob pressed in, push down
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.
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.
7. Keep control knob pressed in for 30 sec-
onds after lighting pilot. After 30 seconds,
release control knob.
Note: If pilot goes out, repeat steps 3
through 7, page 14.
8. Turn control knob counterclockwise
to the ON position. Burner should
light. If burner does not light, call a quali-
ed service person.
9. To leave pilot lit and shut off burners only,
turn control knob clockwise to the
PILOT position.
Ignitor
Control Knob Pilot
FROM "PILOT" POSITION
SLIGHT PUSH TO
TURN OFF
PULL PUSH
TO LIGHT
ON
ON
FROM "PILOT" POSITION
SLIGHT PUSH TO
TURN OFF
PULL PUSH
TO LIGHT
FROM "PILOT" POSITION
SLIGHT PUSH TO
TURN OFF
PULL PUSH
TO LIGHT
ON OFF
On Off
OFF
OFF
Figure 19 - Ignitor and Control Knob
OPERATION
Continued
TO TURN OFF GAS
TO APPLIANCE
1. Turn control knob clockwise to the
PILOT position.
2. Press in and turn control clockwise
to the OFF position.
3. Close equipment shutoff valve.
CLEANING AND MAINTENANCE
Figure 20 - Thermocouple and Pilot
Pilot
Burner
Thermocouple
• Keep the area around the log set clean and
clear of debris.
• Occasionally, you may use a soft bristle
brush to clean logs.
• Once every year a qualied agency or certi-
ed chimney sweep should examine and
clean the venting system of the replace.
www.desatech.com 124183-01B16
TROUBLESHOOTING
Note: All troubleshooting items are listed in order of operation.
POSSIBLE CAUSE
1. Poor fuel quality
2. Fireplace venting system
not drafting properly
3. Excessive ame impinge-
ment or blockage
4. Improper fuel/air mixture
5. Excessive gas supply/pres-
sure
1. Passage of air/gas across
irregular surfaces
1. Incorrect gas supply or
pressure
2. Blocked burner orice or
burner manifold ports
3. Improper burner orifice
size
1. Ignitor electrode not con-
nected to ignitor cable
2. Ignitor cable pinched or
wet
3. Bad ground on piezo
ignitor
4. Broken ignitor cable
5. Bad piezo ignitor
6. Ignitor electrode broken
7. Ignitor electrode positioned
wrong
REMEDY
1. Contact local natural or
propane/LP gas company
2. Adjust damper wide open
and/or have replace and
venting professionally
cleaned and checked
3. Separate the logs to allow
more ame passage
4. Remove any foreign items
from the ame pattern and/
or check for proper orice
sizing
5. Preheat flue in very cold
weather
1. Relieve any tight bends or
kinks in gas supply line
1. Check for proper gas supply
pressure
2. Free burner orifice and
manifold ports of any burrs,
paint, or other blockage
3. Verify proper burner orice
sizing (see Figure 2, page 6)
1. Reconnect ignitor cable
2. Free ignitor cable if pinched
by any metal or tubing.
Keep ignitor cable dry
3. Scrape away paint on brack-
et for better contact with
ground on piezo ignitor
4. Replace ignitor cable
5. Replace piezo ignitor
6. Replace electrode
7. Reposition electrode
OBSERVED PROBLEM
Log set is smoking/sooting
excessively
(Note: It is natural and unavoid-
able for vented gas log sets
to produce moderate levels
of carbon (soot) where ames
contact the logs. This is es-
pecially true with propane/LP
gas.)
Burner is excessively noisy
(Note: The movement and
combustion of gas will cre-
ate low, unavoidable levels
of noise.)
Burner ame is too low or
too high
When ignitor button is pressed,
there is no spark at pilot
(GA9050A-1 Only)
www.desatech.com
124183-01B 17
POSSIBLE CAUSE
1. Gas supply turned off or
equipment 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. Pilot adjustment screw
closed
6. Pilot is clogged
7. Low gas pressure
1. Control knob not fully
pressed in
2. Control knob not pressed
in long enough
3. Equipment shutoff valve
not fully open
4. Pilot flame not touching
thermocouple, which al-
lows thermocouple to cool,
causing pilot ame to go
out. This problem could
be caused by one or both
of the following:
A) Low gas pressure
B) Dirty or partially clogged
pilot
5. Thermocouple connection
loose at control valve
6. Thermocouple damaged
7. Control valve damaged
1. Burner orice clogged
2. Inlet gas pressure is too
low
3. Thermocouple leads dis-
connected or improperly
connected
1. Pilot ame needs adjusting
2. Wrong pilot orice
REMEDY
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 ignit-
ing operation until air is
removed
5. Adjust pilot flame for ap-
proximately 2" blue ame
6. Clean pilot (see Cleaning
and Maintenance, page 15)
or replace pilot assembly
7. Replace gas control
1. Press in control knob fully
2. After pilot lights, keep con-
trol knob pressed in 30
seconds
3. Fully open equipment shut-
off valve
4. A) Contact local natural gas
company
B) Clean pilot (see Cleaning
and Maintenance, page 15)
or replace pilot assembly
5. Hand tighten until snug,
then tighten 1/4 turn more
6. Replace thermocouple
7. Replace control valve
1. Clean burner orice
2. Contact local natural or
propane/LP gas company
3. Reconnect leads
1. Adjust pilot flame for ap-
proximately 2" blue ame
2. Replace pilot orice set
OBSERVED PROBLEM
When ignitor button is pressed,
there is spark at pilot but no
ignition (GA9050A-1 Only)
Pilot lights but ame goes out
when control knob is released
(GA9050A-1 Only)
Burner does not light after pilot
is lit (GA9050A-1 Only)
Delayed ignition burner
(GA9050A-1 Only)
TROUBLESHOOTING
Continued
www.desatech.com 124183-01B18
-
IMPORTANT: Operating log set where impurities in air exist may create odors. Cleaning sup-
plies, 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.
POSSIBLE CAUSE
1. Metal expanding while heat-
ing or contracting while
cooling
1. Log Set burning vapors
from paint, hair spray,
glues, cleaners, chemi-
cals, new carpet, etc. (See
IMPORTANT statement
above)
2. Gas leak. See Warning
1. Gas leak. See Warning
2. Control valve defective
1. Gas leak. See Warn-
page
OBSERVED PROBLEM
Log Set produces a clicking/
ticking noise just after burner
is lit or shut off
Log Set produces unwanted
odors
Gas odor even when control
knob is in OFF position
Gas odor during combustion
REMEDY
1. This is normal with most log
sets. If noise is excessive,
contact qualified service
person
1. Open flue to maximum.
Stop using odor causing
products while log set is
running
2. Locate and correct all leaks
(see Checking Gas Con-
nections, page 8)
1. Locate and correct all leaks
(see Checking Gas Con-
nections, page 8)
2. Replace control valve
1. Locate and correct all leaks
(see Checking Gas Con-
nections, page 8)
TROUBLESHOOTING
Continued
www.desatech.com
124183-01B 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 installa-
tion, operation, or troubleshooting. If so, con-
tact 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 .
REPLACEMENT PARTS
Note: Use only original replacement parts.
This will protect your warranty coverage for
parts replaced under warranty.
PARTS UNDER WARRANTY
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
• purchase date
Usually, we will ask you to return the part to
the factory.
PARTS NOT UNDER WARRANTY
Contact authorized dealers of this product. If
they can’t supply original replacement part(s),
call DESA Heating, LLC at 1-866-672-6040 for
referral information. A list of authorized dealers
can be found by visiting
When calling DESA Heating, LLC, have
ready:
• model and serial numbers of your heater
• the replacement part number
www.desatech.com 124183-01B20
PARTS
This list contains replaceable parts used in your log set. When ordering parts, follow the
instructions listed under Replacement Parts on page 19 of this manual.
3
13
1
8
6
4
2
10
7
5
5
9
9
1 1
12
KEY
NO.
VVSR18
FVSR18
VVDR18
FVDR18
DESCRIPTION QTY
1 14325 14325 14325 14325 14325 Brass 3/8 FLR x 1/2 FPT
Elbow
1
2 14528 14528 14528 14528 14528 Brass 3/8 FLR x 3/8 FPT
Elbow
1
3 901066-01 901066-01 901066-01 901066-01 901066-01 Brass Air Mixer Natural
Gas
1
4 901064-02 901064-03 901064-02 901064-03 901064-04 Natural Gas Injector 1
5 901208-01 901208-02 901207-01 901207-02 901207-03 Burner Manifold 1
6** ** ** ** ** Burner Pan 1
7 901242-01 901242-01 901242-01 901242-01 901242-01 Damper Clamp - Std.
Assembly
1
8 901232-01 901232-01 901232-01 901232-01 901232-01 Gas Line - 12" Aluminum 1
9 901430-01 901430-01 901431-01 901431-01 901431-01 Grate Steps 2
10 901243-01 901243-02 901246-01 901246-02 901246-03 Log Grate 1
11 — — 901681-01 901681-01 901681-01 Burner Strap 1
12 — — 901078-01 901078-01 901078-01 Nut #8/32 1
13 — — 901076-01 901076-01 901076-01 Screw #8/32 x 3/8 1
PARTS AVAILABLE — NOT SHOWN
901156-01 901156-01 901156-01 901156-01 901156-01 0.4# Bag Embers 1
901155-01 901155-01 901155-01 901155-01 901155-01 1.0# Bag Ash Bed
Material (Vermiculite)
1
**Not a eld replaceable part.
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