Comfort Glow HFVMR18 Quick start guide

WARNING: If the information in this manual is not
followed exactly, a fire or explosion may result caus-
ing property damage, personal injury, or loss of life.
— Do not store or use gasoline or other flammable
vapors and liquids in the vicinity of this or any
other appliance.
— WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Donottouchanyelectricalswitch;donotuseany
phone in your building.
• Immediately call your gas supplier from a
neighbor’s phone. Follow the gas supplier’s in-
structions.
• Ifyoucannotreachyourgassupplier,callthefire
department.
— Installation and service must be performed by a
qualifiedinstaller,serviceagency,orthegassupplier.
WARNING: Improper installation,
adjustment, alteration, service, or
maintenance can cause injury or
property damage. Refer to this
manual for correct installation and
operational procedures. For assis-
tanceoradditionalinformationcon-
sult a qualified installer, service
agency, or the gas supplier.
WARNING: This appliance is for
installationonlyinasolid-fuelburn-
ingmasonryorUL127factory-built
fireplace, constructed of noncom-
bustiblematerial,andconnectedto
aworkingflue.(Seepage4formini-
mum flue opening.)
WARNING:Thisisagas-firedappliance.Itusesair(oxygen)fromtheroominwhichitisinstalled.
Provisions for adequate combustion and ventilation air must be provided. Refer to Air for
Combustion and Ventilation section on page 4 of this manual.
Burner Models
HFVMR18 and
HFVMR24
This appliance may be installed in an aftermarket*, permanently located, manufactured
(mobile) home, where not prohibited by local codes.
*Aftermarket: Completion of sale, not for purpose of resale, from the manufacturer
For more information, visit www.desatech.com
For more information, visit www.desatech.com
Save this manual for future reference.
Save this manual for future reference.
RGA 2-72
APPROVED
TESTED AND
LISTED BY
NATURAL GAS LOG
VENTED DECORATIVE APPLIANCE
OWNER’S OPERATION AND INSTALLATION MANUAL

901915-01B
For more information, visit www.desatech.com
For more information, visit www.desatech.com
2
TABLE OF CONTENTS
SAFETY INFORMATION
SAFETY INFORMATION
Carbon Monoxide Poisoning: Early signs of carbon monoxide
poisoningresemble theflu, withheadaches, dizziness,or nausea.If
you have these signs, the log set may not be working properly. Get
fresh air at once! Have log set serviced. Some people are more
affected by carbon monoxide than others. These include pregnant
women,peoplewithheartorlungdiseaseoranemia,thoseunderthe
influence of alcohol, and those at high altitudes.
Natural Gas: Natural gas is odorless. An odor-making agent is
addedtothegas.Theodorhelpsyou detectagasleak. 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 ICON G 001
WARNINGS
IMPORTANT: Read this owner’s manual carefully and
completely before trying to assemble, operate, or ser-
vicethislogset.Improper useofthislogsetcancause
serious injury or death from burns, fire, explosion,
electrical shock, and carbon monoxide poisoning.
DANGER: Carbon monoxide poisoning may lead
to death!
WARNING: Any change to this log set or its
controls can be dangerous.
WARNING: Keep flue open when operating unit.
1. This appliance, as supplied, is only for use with the type of gas
indicated on the rating plate. This appliance is convertible for
use with propane/LP, using the GA9050 or GA9150 pilot kit.
2. If you smell gas
• shut off gas supply
• do not try to light any appliance
• do not touch any electrical switch; do not use any phone in
your building
• immediately call your gas supplier from a neighbor’s phone.
Follow the gas supplier’s instructions
• if you cannot reach your gas supplier, call the fire department
3. Never install the log set
• in a recreational vehicle
• where curtains, furniture, clothing, or other flammable ob-
jects are less than 42 inches from the front, top, or sides of
the log set
• in high traffic areas
• in windy or drafty areas
4. Before installing in a solid fuel burning fireplace, the chimney
flue and firebox must be cleaned of soot, creosote, ashes, and
loose paint by a qualified chimney cleaner. Creosote will ig-
nite if highly heated. Inspect chimney flue for damage. If dam-
aged, repair flue before operating heater.
5. You must operate this log set with a fireplace screen in place.
Make surefireplace screenis closedbeforerunning log set. If the
fireplace has glass doors, they must remain fully OPEN while
this log set is in operation.
6. This log set is designed to be smokeless. If logs ever appear to
smoke, turn off appliance and call a qualified service person.
Note: During initial operation, slight smoking could occur due
to log curing and the burning of manufacturing residues. You
may wish to add more ventilation by opening a window.
7. To reduce the creation of soot, follow the instructions in Clean-
ing and Maintenance, page 9.
WARNING:Thisproductcontainsand/orgenerates
chemicals known to the State of California to cause
cancer or birth defects, or other reproductive harm.
TABLE OF CONTENTS
SAFETY INFORMATION ............................................................ 2
UNPACKING ............................................................................... 3
PRODUCT IDENTIFICATION ..................................................... 3
LOCAL CODES........................................................................... 3
OPTIONAL PRODUCT FEATURES ........................................... 4
AIR FOR COMBUSTION AND VENTILATION ........................... 4
INSTALLATION ........................................................................... 4
OPERATING APPLIANCE .......................................................... 8
CLEANING AND MAINTENANCE .............................................. 9
REPLACEMENT PARTS ............................................................ 9
PARTS CENTRALS .................................................................... 9
TROUBLESHOOTING .............................................................. 10
ILLUSTRATED PARTS BREAKDOWNAND PARTS LIST ....... 12
OWNER’S REGISTRATION FORM.......................................... 15
ACCESSORIES ........................................................................ 17
WARRANTY INFORMATION ...................................... Back Cover

901915-01B
For more information, visit www.desatech.com
For more information, visit www.desatech.com
3
3
SAFETY INFORMATION
UNPACKING
PRODUCT IDENTIFICATION
LOCAL CODES
PRODUCT IDENTIFICATION
Figure 1 - Product Identification (HFVMR24 Shown)
UNPACKING
CAUTION: Do not remove the data plates from the
burner pan. The data plates contain important war-
ranty and safety information.
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 allitemsfor anyshipping damage.If damaged,promptly
inform dealer where you bought the product.
LOCAL CODES
Installand uselogset withcare. Followalllocal codes.Inthe 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
Hearth Kit Model: _______________________
Serial Number: _________________________
Log Set Model: HFVMR18 or HFVMR24
Grate
Burner
Pan
Burner Manifold Right Side Burner
Left Side
Burner Burner Inlet
Fitting
8. Do not allow fans to blow directly into the fireplace. Avoid
any drafts that alter burner flame patterns. Ceiling fans can
create drafts that alter burner flame patterns. Altered burner
patterns can increase sooting.
9. Do not use a blower insert, heat exchanger insert or other ac-
cessory not approved for use with this log set.
10. This log set needs fresh, outside air ventilation to run properly.
See Air for Combustion and Ventilation, page 4.
11. Do not run log set
• where flammable liquids or vapors are used or stored
• under dusty conditions
12. Do not burn solid fuel in the fireplace after installing the log
set. Do not use this log set to cook food or burn paper or other
objects.
13. Log setbecomes veryhotwhen inuse. Keepchildrenand adults
away from hot surface to avoid burns or clothing ignition. Log
set will remain hot for a time after shutdown.Allow surface to
cool before touching.
14. Carefully supervise young children when they are in the room
with log set.
15. Do not use appliance if any part has been exposed to or under
water. Immediatelycall aqualified service technicianto inspect
the room appliance and to replace any part of the control sys-
tem (if using GA9050 or GA9150) and any gas control which
has been under water.
16. To help prevent breakage, new logs must be broken-in (see
Curing Logs, page 9).
17. Turnlog set offand letcool beforeservicing, installing,orrepair-
ing. Only a qualified service person should install, service, or re-
pair log set.
SAFETY INFORMATION
Continued

901915-01B
For more information, visit www.desatech.com
For more information, visit www.desatech.com
4
INSTALLATION
WARNING:Beforeinstallinginasolidfuelburning
fireplace,thechimneyflueandfireboxmustbecleaned
ofsoot,creosote,ashes,andloosepaintbyaqualified
chimneycleaner.Creosotewilligniteifhighlyheated.
A dirty chimney flue may create and distribute soot
within the house. Inspect chimney flue for damage. If
damaged, repair flue before operating heater.
NOTICE:Installation,service,andrepairofthisappli-
ance must be performed by a qualified installer,
service agency, company or gas supplier experi-
enced with this type of gas appliance. Only factory
authorized components listed in these instructions
may be used in accordance with the manufacturer’s
instructions and all codes and requirements of the
authority having jurisdiction. Any modifications to
thiskit,oruseofunauthorizedcomponentsoracces-
soryitemswillvoidthemanufacturer’swarranty,and
may result in a hazardous condition.
CAUTION:Donotremovethedataplatesattached
to the burner pan. The data plates contain important
warranty and safety information.
FLUE OPENING SPECIFICATIONS
Note: This vented appliance must be installed only in a solid-fuel
burning fireplace with a working flue and constructed of noncom-
bustible material.
The charts in Figure 2, page 5 indicate technical information
regarding the installation of your gas log set. Please make sure that
all of the specifications shown are applicable before installation is
attempted.
The fireplace must include a working flue and venting system with
the minimum openings shown in the Figure 2, page 5.
Today’s homes are built more energy efficient than ever. New
materials, increased insulation, and new construction methods help
reduce heat loss in homes. Home owners weather strip and caulk
around windows and doors to keep the cold air out and the warm air
in.Duringheatingmonths,homeowners wanttheirhomes asairtight
as possible.
While it is good to make your home energy efficient, your home
needs to breathe. Fresh air must enter your home. All fuel-burning
appliances need fresh air for proper combustion and ventilation.
Exhaustfans,fireplaces,clothesdryers,andfuelburningappliances
drawairfromthehousetooperate.Youmustprovideadequatefresh
air for these appliances. This will insure proper venting of vented
fuel-burning appliances.
AIR FOR COMBUSTION AND
VENTILATION
WARNING:Thisapplianceshallnotbeinstalledin
a confined space or unusually tight construction
unless provisions are provided for adequate com-
bustion and ventilation air. Read the following in-
structionstoinsureproperfreshairforthisandother
fuel-burning appliances in your home.
OPTIONAL PRODUCT
FEATURES
ON/OFF SAFETY VALVE/PILOT KIT AND
PROPANE/LP CONVERSION
Anoptionalvalve/safetypilotkitwithapiezoignitorisavailablefor
this appliance. This system requires no matches, batteries, or other
sources to light. You must use this optional system for LP conver-
sion. See Accessories, page 17.
REMOTE CONTROL READY (MILLIVOLT)
SAFETY VALVE/PILOT KIT
An optional millivolt valve/safety pilot kit with a piezo ignitor is
available for this appliance. This system requires no matches,
batteries,orother sourcestolight.Thissystem maybeconnectedto
a wall switch or hand-held wireless remote control. See Accesso-
ries, page 17.
REMOTE CONTROL ACCESSORIES
There is an optional hand-held ON/OFF remote control that can be
purchased separately for this log set. You must use the millivolt
valve/safety pilot kit to use remote accessories with this appliance.
See Accessories, page 17.
A wall switch is also available for this appliance. You must use the
millivolt valve/safety pilot kit to use the wall switch with this
appliance. See Accessories, page 17.
OPTIONAL PRODUCT FEATURES
AIR FOR COMBUSTION AND VENTILATION
INSTALLATION
Flue Opening Specifications

901915-01B
For more information, visit www.desatech.com
For more information, visit www.desatech.com
5
5
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 17).
Call dealer where you bought log set.
If the fireplace does not have a gas supply shut-off valve, one must
be installed.
VENTING SPECIFICATIONS FOR
INSTALLATION
The fireplace chimney flue 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 fireplace.
Observethesmokeandbesuretheventisproperlydrawingitupthe
chimney.If thesmokespills out intotheroom, extinguishtheflame
and remove any obstruction until proper venting is achieved.
The chimney flue must remain open a minimum of 3" at all times
during the operation of this log set.
MODEL
DESCRIPTION
HFVMR18 18" Multi-Side 55,000 45,000 8" dia.
HFVMR24 24" Multi-Side 65,000 55,000 8" dia.
Btu Input
Natural
Gas
Btu Input
Propane/LP
Gas
Minimum
Vent
Opening
MINIMUM FIREBOX SIZES
LOG FRONT BACK
SIZE WIDTH* WIDTH** DEPTH HEIGHT
18" 28" 28" 16" 18"
24" 29 3/4" 29 3/4" 16" 18"
* Add 6" if safety valve/pilot is used
**At depth indicated
FUEL INLET PRESSURE
SPECIFICATIONS (W.C.)
Min. Max.
NG 5.5" 10.5"
LP 11" 13"
Figure 2 - Technical Information Charts
BURNER ORIFICE
LOG NATURAL PROPANE/LP
SIZE IN. NUM. IN. NUM.
18" .111 34 .073 49
24" .129 30 .086 44
INSTALLATION
Continued
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 fireplace, another suitable clamp or permanent stop
must be installed, or the damper blade must be cut or removed.
Manufactured Fireplace
Masonry Fireplace
Damper Clamp
Damper Damper
Damper Clamp
Damper
Figure 3 - Attaching Damper Clamp
CONNECTING TO GAS SUPPLY
WARNING: A qualified service person must con-
nect log set to gas supply. Follow all local codes.
Installation Items Needed
Beforeinstallinglogset,makesureyouhavetheitemslistedbelow.
• 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
CAUTION: Use only new, black iron or steel pipe.
Internally-tinnedcoppertubingmaybeusedincertain
areas. Check your local codes. Use pipe of 1/2" diam-
eterorgreater toallowproper gasvolumeto log set.If
pipe is too small, undue loss of volume will occur.
INSTALLATION
Flue Opening Specifications (Cont.)
Check Gas Type
Venting Specifications for Installation
Installing Damper Clamp
Connecting To Gas Supply

901915-01B
For more information, visit www.desatech.com
For more information, visit www.desatech.com
6
Figure 5 - Checking Gas Joints
INSTALLATION
Continued
WARNING: Test all gas piping and connections,
internal and external to unit, for leaks after installing
or servicing. Correct all leaks at once.
WARNING:Neveruse anopenflametocheck for
a leak. Apply a noncorrosive leak detection fluid to
all joints. Bubbles forming show a leak. Correct all
leaks at once.
CHECKING GAS CONNECTIONS
Pressure Testing Gas Supply Piping System
Test Pressures In Excess Of 1/2 PSIG (3.5 kPa)
1. Disconnect appliance with its appliance main gas valve (control
valve) and equipment shutoff valve from gas supply piping sys-
tem. 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 using compressed air or
opening main gas valve located on or near gas meter.
4. Check all joints of gas supply piping system. Apply noncor-
rosive leak detection fluid 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 fittings for leaks.
Test Pressures Equal To or Less Than 1/2 PSIG (3.5 kPa)
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 equipment shutoff valve (see
Figure 5).Apply noncorrosive leak detection fluid togasjoints.
Bubbles forming show a leak.
4. Correct all leaks at once.
We recommend that you install a sediment trap in supply line as
shownin Figure4.Locate sedimenttrapwhere itiswithin reachfor
cleaning. Install in piping system between fuel supply and heater.
Locatesediment trapwhere trappedmatter isnot likelyto 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 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 log set (see Figure 4).
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 threads. This will prevent
excess sealant from going into pipe. Excess sealant in pipe could
result in a clogged burner injector.
WARNING:Use pipejointsealant thatisresistant
to liquid petroleum (LP) gas.
Figure 4 - Gas Connection
* Purchase the optional CSA design-certified equipment shutoff
valve from your dealer. See Accessories, page 17.
** 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-Certified
Equipment Shutoff Valve
With 1/8" NPT Tap*
Approved
Gas Hose
Tee Joint
Pipe Nipple
Cap
Gas Meter
Equipment Shutoff Valve
INSTALLATION
Connecting To Gas Supply (Cont)
Checking Gas Connections

901915-01B
For more information, visit www.desatech.com
For more information, visit www.desatech.com
7
7
TESTING BURNER FOR LEAKS
1. Generously apply noncorrosive leak detection fluid to all
connections.
WARNING: Never check for gas leaks with open
flame.
2. Light the burner with the shutoff valve no more than half open
and holding a match slightly in front of the pan (see Lighting
Instructions, page 7).
3. Inspect all connections for bubbles, raw gas odor, or flame
from any area other than the burner (leaks). If leaks are de-
tected, shut off the gas valve immediately. Tighten, or reas-
semblethe looseconnection(s) usingpipe jointcompound until
burner system is leak free.
4. When the burner is tested and leak free, observe the individual
tongues of flame on the burner. Note: The burner design in-
cludes more ports on the outside of the bar. Make sure that all
ports are clear and producing flame evenly across the burner. If
any ports appear blocked, clear them by removing the burner
manifold and reaming the ports with a modified paper clip or
other suitable tool.
5. When finished testing, turn the gas shutoff valve OFF to extin-
guish all flames.
ADDING PAN MATERIAL
1. Open the bags of ash bed material (vermiculite) and spread it
evenly across the burner pan to the top.You may overflow the
front and sides of the pan to cover the entire pan and connect-
ing hardware. If using optional GA9050 or GA9150 valve, do
not cover valve with pan material.
2. Open the glowing embers and evenly cover the ash bed mate-
rial (vermiculite) in the burner pan.
INSTALLATION
Continued
HEARTH KIT ASSEMBLY AND
INSTALLATION
Kit Assembly
1. Unscrew burner inlet fitting from burner manifold.
2. Place burner manifold in pan with threaded opening facing
open knockout plug (see Figure 6). Make sure the burner ports
face downward.
3. Using thread sealant (resistant to the action of propane/LP gas)
on larger end of fitting, screw the burner inlet fitting through
hole and into burner manifold. Tighten using a wrench. If us-
ing propane/LP gas, follow instructions included in optional
GA9050 valve kit or GA9150 valve kit for installation and
operation.
4. Using thread sealant on the male threads, install the burner
connection fittings into the 1/8" NPT holes on each side of the
burner manifold.
5. Press the right and left side burners onto the burner connection
fittings.Theburner portingshould facedownward (see Figure6).
Installation and Gas Connection
1. Place the burner pan assembly in the center of the fireplace floor.
Make sure the inlet end of the pan faces the gas supply.
2. Thread the gas supply fitting to the fireplace gas supply pipe.
Use thread sealant.
3. Install adapter fitting onto the burner inlet fitting using
thread sealant on male threads of burner inlet fitting (see
Figure 7). Adjust to most convenient position.
4. Install the gas connector tube to the gas supply fitting. Care-
fully shape tube to attach to adapter fitting. Be careful not to
cause kinks in tube.
5. Using the 1/4" x #8 provided, install the cover over the in-
let fitting.
Figure 6 - Installing Burner
Burner Inlet
Fitting
Burner Manifold
Burner Connection
Fittings
Side Burners
Figure 7 - Connecting Gas to Appliance
Adapter
Fitting Gas
Connector
Tube
Burner Pan
Assembly
INSTALLATION
Hearth Kit Assembly And Installation
Testing Burner For Leaks
Adding Pan Material

901915-01B
For more information, visit www.desatech.com
For more information, visit www.desatech.com
8
INSTALLATION
Continued
Figure 8 - Installing Grate (Pan Material Not Shown)
Figure 9 - Placement of Bottom Logs
Grate
Burner Pan
Figure 10 - Placement of Top Logs
LIGHTING
INSTRUCTIONS
OPERATING APPLIANCE
FOR YOUR SAFETY
READ BEFORE LIGHTING
WARNING:Ifyoudonotfollowtheseinstructions
exactly, a fire or explosion may result causing prop-
erty damage, personal injury or loss of life.
BEFORE LIGHTING smell all around the appliance area for
gas.Besuretosmellnexttothefloorbecausesomegasisheavier
than air and will settle on the floor.
WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electric switch; do not use any phone in
your building.
• Immediatelycall yourgassupplierfromaneighbor’sphone.
Follow the gas supplier’s instructions.
• Ifyoucannotreachyourgassupplier,callthe firedepartment.
GAS SHUTOFF
VALVE OPERATION
Flame Adjustment
Adjust the flame ON/OFF by turning the gas shutoff valve
counterclockwise toopenorclockwise toclose,
as necessary.
Shutting Off Appliance
Turn gas shutoff valve clockwise to the OFF position.
1. STOP! Read the safety information, above.
2. Turn the gas shutoff valve to OFF.
3. Wait five (5) minutes to clear out any gas. If you then smell
gasSTOP!Followthesafetyinformationabove.Ifyoudon‘t
smell gas, go on to the next step.
4. Light a match and lay it on top of the pan material about
2" from the end of the supply side of the pan
5. Slowly turn the gas shutoff valve ON until the burner ig-
nites. If the burner doesn’t ignite within 10 seconds with
the match burning, turn the shutoff valve OFF and repeat
steps 1 through 4 again.
WARNING: Keep flue open when operating unit.
INSTALLING GRATE AND LOGS
1. Place the grate over the burner pan. The grate should “lock”
into place over the corners of the pan (see Figure 8).
2. Place oneof thebottom logsonthegrateandslide forwardagainst
the front grate bars. Repeat for other side (see Figure 9).
3. Place the smaller top logs onto the bottom logs (see Figure 10).
Leave as much open space between logs as possible to mini-
mize flame impingement and sooting. Note: Logs may chip if
they are handled roughly or if hit together while being placed.
INSTALLATION
Installing Grate and Logs
OPERATING APPLIANCE
For Your Safety Read Before Lighting
Lighting Instructions
Gas Shutoff Valve Operation

901915-01B
For more information, visit www.desatech.com
For more information, visit www.desatech.com
9
9
During the 2-3 hour appliance break-in period, you may detect
an odor from the appliance as the various paints and com-
pounds used in the manufacturing of this log set cure. This is a
normal and temporary situation that is not cause for alarm.
However,youmaywanttoprovideextraventilationtotheroom
during this time.
To ensure proper curing of the logs:
• Ignite a 2" flame and maintain it for 1 hour.
• Burnthe logsinconsecutive1 hourperiods raising theflame
anadditional 2"to fullflame heightforatotalofthreehours.
CURING
LOGS
CLEANING AND
MAINTENANCE
• 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 qualified agency or certified chimney sweep
should examine and clean the venting system of the fireplace.
OPERATING APPLIANCE
Continued
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 or Parts Centrals. 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 log set
• how log set 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.
PARTS NOT UNDER WARRANTY
Contact authorized dealers of this product or Parts Centrals. When
calling, have ready
• model number of your log set
• the replacement part number
PARTS CENTRALS
These Parts Centrals are privately-owned businesses. They have
agreed to support our customer’s needs by providing original
replacement parts and accessories.
Baltimore Electric
1348 Dixwell Avenue
Hamden, CT 06514-0322
1-800-397-7553
203-248-7553
Parts Department
Portable Heater Parts
342 N. County Rd. 400 E.
Valparaiso, IN 46383-9704
All States
219-462-7441
1-888-619-7060
Parts Department
[email protected]
[email protected]
FBD
1349 Adams St.
Bowling Green, KY 42103-3414
270-846-1199
1-800-654-8534
Fax: [phone]
[email protected]
Master Parts Distributor
1251 Mound Ave. NW
Grand Rapids , MI 49504-2672
616-791-0505
1-800-446-1446
Fax: [phone]
www.nbmc.com
Washer Equipment Co.
1715 Main Street
Kansas City, MO 64108-2195
KS, MO, AR
816-842-3911
www.washerparts.com
East Coast Energy Products
707 Broadway
W. Long Branch, NJ 07764-1542
732-870-8809
1-800-755-8809
www.njplaza.com/ecep
Laportes Parts and Service
2444 North 5th Street
Hartsville, SC 29550-7704
843 -332-0191
Parts Department
Cans Unlimited, Inc.
P.O. Box 645
Taylor, SC 29687-0013
All States
803-879-3009
1-800-845-5301
[email protected]
OPERATING APPLIANCE
Curing Logs
CLEANING AND MAINTENANCE
REPLACEMENT PARTS
PARTS CENTRALS

901915-01B
For more information, visit www.desatech.com
For more information, visit www.desatech.com
10
TROUBLESHOOTING
WARNING: Turn off log set and let cool before
servicing. Only a qualified service person should
service and repair log set.
POSSIBLE CAUSE REMEDY
OBSERVED PROBLEM
Note: For additional help, visit DESA’s technical service web
site at www.desatech.com.
Note: All troubleshooting items are listed in order of operation.
1. Poor fuel quality
2. Fireplace venting system not drafting
properly
3. Excessive flame impingement or
blockage
4. Improper fuel/air mixture
5. Excessive gas supply/pressure
1. Passage of air/gas across irregular sur-
faces
1. Incorrect gas supply or pressure
2. Blocked burner orifice or burner mani-
fold ports
3. Improper burner orifice size
Log set is smoking/sooting excessively
( Note: It is natural and unavoidable for
vented gas log sets to produce moderate
levels of carbon (soot) where flames
contact the logs. This is especially true
with propane/LP gas.)
Burner is excessively noisy
( Note: The movement and combustion of
gas will create low, unavoidable levels of
noise.)
Burner flame is too low or too high
1. Contact local natural or propane/LPgas
company
2. Adjust damper wide open and/or have
fireplace and venting professionally
cleaned and checked
3. Separate the logs to allow more flame
passage
4. Remove any foreign items from the
flame pattern and/or check for proper
orifice 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 orifice sizing (see
Figure 2, page 5)
TROUBLESHOOTING

901915-01B
For more information, visit www.desatech.com
For more information, visit www.desatech.com
11
11
TROUBLESHOOTING
Continued
WARNING: If you smell gas
•Shut off gas supply.
•Do not try to light any appliance.
•Do not touch any electrical switch; do not use any phone in
your building.
•Immediately call your gas supplier from a neighbor’s phone.
Follow the gas supplier’s instructions.
•Ifyoucannotreachyourgassupplier,callthefiredepartment.
POSSIBLE CAUSE
1. Metal expanding while heating or con-
tracting while cooling
1. Log set burning vapors from paint, hair
spray, glues, cleaners, chemicals, new
carpet, etc. (See IMPORTANT state-
ment above)
2. Gas leak. SeeWarning statement at
top of page
1. Gas leak. SeeWarning statement at
top of page
2. Control valve defective
1. Gas leak. SeeWarning statement at
top of 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 common with most log sets. If
noise is excessive, contact qualified ser-
vice person
1. Open flue to maximum. Stop using odor
causingproducts whilelog setis running
2. Locate and correct all leaks (see Check-
ing Gas Connections, page 6)
1. Locate and correct all leaks (see Check-
ing Gas Connections, page 6)
2. Replace control valve
2. Locate and correct all leaks (see Check-
ing Gas Connections, page 6)
IMPORTANT: Operating log set where impurities in air exist may create odors.
Cleaningsupplies,paint,paintremover,cigarettesmoke,cementsandglues,new
carpet or textiles, etc., create fumes. These fumes may mix with combustion air
and create odors. These odors will disappear over time.
TROUBLESHOOTING

901915-01B
For more information, visit www.desatech.com
For more information, visit www.desatech.com
12
ILLUSTRATED PARTS
BREAKDOWN
MODELS HFVMR18 AND HFVMR24
3
6
12
10 11
10
4
7
9
5
1
8
2
ILLUSTRATED PARTS BREAKDOWN
Models HFVMR18 And HFVMR24

901915-01B
For more information, visit www.desatech.com
For more information, visit www.desatech.com
13
13
PARTS LIST
MODELS HFVMR18 AND HFVMR24
This list contains replaceable parts used in your log set. When
ordering parts, follow the instructions listed under Replacement
Parts on page 9 of this manual.
KEY PART NUMBER FOR
NO. HFVMR18 HFVMR24 DESCRIPTION QTY.
1 901058-01 901058-01 Brass 3/8 FLR x 1/2 FPT Adapter 1
2 901059-01 901059-01 Brass 3/8 FLR x 3/8 FPT Adapter 1
3 901066-01 901066-01 Brass Air Mixer - Natural Gas 1
4 901064-10 901064-03 Natural Gas Injector 1
5 901763-02 901763-01 Burner Manifold 1
6 901767-02 901767-01 Burner Pan 1
7 901242-01 901242-01 Damper Clamp - Std. Assembly 1
8 901232-01 901232-01 Gas Line - 10" Flex 1
9 901800-01 901757-01 Log Grate 1
10 901060-01 901060-01 Burner Connection Fitting 2
11 901765-03 901765-01 Right Side Burner 1
12 901765-04 901765-02 Left Side Burner 1
PARTS AVAILABLE —NOT SHOWN
901156-01 901156-01 .125# Bag Embers 1
901155-01 –1.5# Bag Ash Bed Material
(Vermiculite) 1
–901155-01 1.5# Bag Ash Bed Material
(Vermiculite) 2
901036-01 901036-01 Aluminum Rating Plate-Generic 1
PARTS LIST
Models HFVMR18 And HFVMR24

901915-01B
For more information, visit www.desatech.com
For more information, visit www.desatech.com
14
ILLUSTRATED PARTS
BREAKDOWN
MANCHESTER SPLIT OAK LOG SET
This list contains replaceable parts used in your log set. When
ordering parts, follow the instructions listed under Replacement
Parts on page 9 of this manual.
KEY PART NUMBER FOR
NO. 18" 24" DESCRIPTION QTY.
1 901656-01 901657-01 Bottom Front 1 2
2 901666-01 901667-01 Bottom Front 2 2
3 901619-01 901619-01 FS-12Y Top Log 1
4 901617-01 901617-01 FS-16 Top Log 1
5 901612-01 901612-01 FS-17 Top Log 1
6 901620-02 901620-02 FR12L Top Log 1
7 —901614-01 FS15 Top Log 1
3
1
6
7
5
4
2
Manchester Split Oak Logs
ILLUSTRATED PARTS BREAKDOWN
Log Set

901915-01B
For more information, visit www.desatech.com
For more information, visit www.desatech.com
15
15
1. Where will the product be used?
❍ Living/Family Room ❍ Office/Warehouse ❍ Utility Shed/Outbuilding ❍ Garage ❍ Bedroom ❍ Bathroom ❍ Other
2. If you bought this product yourself, did you plan to purchase this type of product before going into the store? ❍ Yes ❍ No
3. Who selected the product? ❍Male ❍Female ❍Both
4. What is the population of your area? ❍ Under 10,000 ❍ 10,000 to 25,000 ❍25,000 to 50,000 ❍ 50,000 to 100,000
❍ 100,000 to 250,000 ❍ Over 250,000
5. What is your primary source of heat? ❍ Propane (LP Gas) ❍ Fuel Oil ❍ Wood ❍ Natural Gas ❍ Electric ❍ Other
6. How was the product installed? ❍ Professional Installer ❍ Self ❍ Other
7. Cost of product excluding sales tax? $___________________
8. Cost to install product? $____________________
9. Type of store where product was purchased? ❍ Hardware ❍ Propane Dealer ❍ Natural Gas/Utility Co. ❍ Home Center/Builder’s Supply
❍ Fireplace or Hearth Shop ❍ Farm Store ❍ Other
10. What motivated you to buy this product? ❍ Sudden Cold Weather ❍ Replace Older Model ❍ D.I.Y. Home Project
❍ Emergency Back-Up Heat ❍ Heater was on Sale ❍ Energy Savings/High Efficiency ❍ Construction Project ❍ Other
11. How did you learn about this product brand? ❍ Advertising ❍ Relative or Friend ❍ Store Display ❍ Other ________________________
12. Level of Education of Purchaser: ❍ Some High School ❍ Completed High School ❍ Completed College ❍ Completed Graduate School
13. Age of Purchaser: ❍ Under 20 ❍ 20 - 29 ❍ 30 - 39 ❍ 40 - 49 ❍ 50 - 59 ❍ 60 or Over
14. Buyer’s total annual household income: ❍ Under $15,000 ❍ $15,000 to $19,999 ❍ $20,000 to $34,999 ❍ $35,000 to $49,999
❍ $50,000 to $74,999 ❍ $75,000 to $99,999 ❍ $100,000 and Over
15. Store where product was purchased:
Name: ______________________________________
City: _______________________ State: __________
16. In choosing this product, how important were the following:
Availability
Price
Brand Name
Overall Quality
Heat Output
Made in USA
Warranty
Local Service
Value for Price
Prior Brand Experience
Controls Location
Thermostat, Remote, or Manual Operation
Ease of Operation
Special Features
Salesperson’s Recommendation
Friend/Relative’s Recommendation
Portability
Quiet Operation
OWNER'S REGISTRATION FORM
Please answer the following questions to register your product with DESA:
In order to provide better customer service for this and future purchases, we recommend that you register your product with us.
You can register online at www.desatech.com. If access to our website is not available to you, please complete this Owner’s
Registration Form and mail to the address on the back of this owner’s manual.Please provide the following product information:
Not Important Somewhat Important Very Important
❍
❍
❍
❍
❍
❍
❍
❍
❍
❍
❍
❍
❍
❍
❍
❍
❍
❍
❍
❍
❍
❍
❍
❍
❍
❍
❍
❍
❍
❍
❍
❍
❍
❍
❍
❍
❍
❍
❍
❍
❍
❍
❍
❍
❍
❍
❍
❍
❍
❍
❍
❍
❍
❍
Brand: (Comfort Glow, Vanguard, etc.)
Model: (EFP33PR, VTGH33NR, etc.)
Date Purchased: Note: Keep receipt for warranty verification.
Serial Number: 7 or 9 digit number located on product or identification tag.
First Name: Last Name:
Address:
City: State: Zip: Country:
Home Phone: ( ) -
E-Mail:

901915-01B
For more information, visit www.desatech.com
For more information, visit www.desatech.com
16
2701 Industrial Drive
P.O. Box 90004
Bowling Green, KY 42102-9004
Postage
Required
TAPE
TAPE

901915-01B
For more information, visit www.desatech.com
For more information, visit www.desatech.com
17
17
ACCESSORIES
Contactauthorizeddealers ofthis productorPartsDealerson page9.
EQUIPMENT SHUTOFF VALVE - GA5010
For all models. Equipment shutoff valve with 1/8" NPT tap. Fits 1/2"
NPT pipe.
RECEIVER AND HAND-HELD ON/OFF RE-
MOTE CONTROL KIT - CGHRCB
For all models. Allows the gas log set to be turned on and off by
using a hand-held remote control. Valve/Pilot Kit GA9150-1 must
be purchased to use this remote.
WALL-MOUNT ON/OFF SWITCH - GWMS2
(Not Shown)
For all models. Allows the gas log set to be turned on and off with
a wall switch. Valve/Pilot Kit GA9150-1 must be purchased to use
this remote.
MANUAL CONTROL ON/OFF SAFETY VALVE/
PILOT KIT - GA9050A
(Not Shown)
For all models. Contains components for propane/LP conversion.
REMOTE READY ON/OFF SAFETY VALVE/
PILOT KIT - GA9150A
(Not Shown)
For all models. Required for remote control operation. Contains
components for propane/LP conversion.
INDIVIDUAL ROUND LOG - GA9450A
(Not Shown)
Fordecorativepurposesonly.Nottobeusedasadditionallogsonunit.
INDIVIDUAL SPLIT LOG - GA9550A
(Not Shown)
Fordecorativepurposesonly.Nottobeusedasadditionallogsonunit.
PINE CONES - GA9650A
(Not Shown)
For all models. Use for additional decoration only. (3 pine cones
per box)
ASH BED MATERIAL (Vermiculite) - GA9750A
(Not Shown)
For all models. Use for firebox decoration only.
GLOWING EMBERS - GA9950A
(Not Shown)
For all models. Use for firebox decoration, only.
SILICA SAND - GA9850A
(Not Shown)
For all models. Use for firebox decoration only.
LAVA ROCK - GA6067A
(Not Shown)
For all models. Use for firebox decoration only.
DECORATIVE ASH BED CONTROL COVER
CDABKA
(Not Shown)
An attractive way to cover control knob and piezo ignitor.
18" ORNAMENTAL GRATE ENHANCER
GA9350A
(Not Shown)
For 18" models only. Additional decoration for front grate.
24" ORNAMENTAL GRATE ENHANCER
GA9360A
(Not Shown)
For 24" models only. Additional decoration for front grate.
FIRE CRACKLE - CF6-A
(Not Shown)
For all models. Creates the sound of a real burning fire.
ACCESSORIES

901915-01B
For more information, visit www.desatech.com
For more information, visit www.desatech.com
18
LIMITED WARRANTY
COMFORT GLOW VENTED GAS LOGS
DESA warrants this product to be free from defects on burner system for three (3) years and logs for a lifetime from the date of first purchase,
provided that the product has been properly installed, operated and maintained in accordance with all applicable instructions. To make a claim
under this warranty the Bill of Sale or cancelled check must be presented.
Thiswarranty isextendedonlyto theoriginalretail purchaser.Thiswarranty coversthecostofpart(s)requiredto restorethislog settoproper operating
condition and an allowance for labor when provided by a DESA Authorized Service Center. Warranty part(s) MUST be obtained through authorized
dealers of this product and/or DESA who will provide original factory replacement parts. Failure to use original factory replacement parts voids this
warranty. The log set MUST be installed by a qualified installer in accordance with all local codes and instructions furnished with the unit.
This warranty does not apply to parts that are not in original condition because of normal wear and tear, or parts that fail or become damaged as
a result of misuse, accidents, lack of proper maintenance or defects caused by improper installation. Travel, diagnostic cost, labor, transportation
and any and all such other costs related to repairing a defective log set will be the responsibility of the owner.
TO THE FULL EXTENT ALLOWED BY THE LAW OF THE JURISDICTION THAT GOVERNS THE SALE OF THE PRODUCT; THIS
EXPRESSWARRANTYEXCLUDESANYANDALLOTHEREXPRESSEDWARRANTIESANDLIMITSTHEDURATIONOFANYAND
ALL IMPLIED WARRANTIES, INCLUDING WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
TO THREE (3) YEARS ON BURNER SYSTEM AND A LIFETIME ON LOGS FROM THE DATE OF FIRST PURCHASE; AND DESA’S
LIABILITY IS HEREBY LIMITED TO THE PURCHASE PRICE OF THE PRODUCT AND DESA SHALL NOT BE LIABLE FOR ANY
OTHER DAMAGES WHATSOEVER INCLUDING INDIRECT, INCIDENTAL OR CONSEQUENTIAL DAMAGES.
Some states do not allow a limitation on how long an implied warranty lasts or an exclusion or limitation of incidental or consequential damages,
so the above limitation on implied warranties, or exclusion or limitation on damages may not apply to you.
This warranty gives you specific legal rights, and you may also have other rights that vary from state to state.
For information about this warranty write:
2701 Industrial Drive
P.O. Box 90004
Bowling Green, KY 42102-9004
www.desatech.com
KEEP THIS WARRANTY
WARRANTY INFORMATION
Model
Serial No.
Date Purchased
Always specify model and serial numbers when communicating with the factory.
Wereservetherighttoamendthesespecificationsatanytimewithoutnotice.Theonlywarrantyapplicableisourstandardwrittenwarranty.Wemake
no other warranty, expressed or implied.
901915-01
Rev. B
04/03
NOT A UPC
901915 01