USSC 2020L Quick start guide

Vent-Free Gas Fireplace
United States
StoveCompany
851466A 01/01
WARNING: If the information in this manual is
not followed exactly, a fire or explosion may
result causing property damage,personal injury,
or loss of life.
~Do not store or use gasoline or other flammable
vapors and liquids in the vicinity of this or any
other appliance.
~WHAT TO DO IF YOU SMELL GAS
* Do not try to light any appliance
* Do not touch any electrical switch; do not
use any phone in your building
* Immediately call your gas supplier from a
neighbor's phone. Follow the gas supplier's
instructions
* If you cannot reach your gas supplier, call
the fire department
~Installation and service must be performed by
a qualified installer, service agency, or the gas
supplier.
This is an unvented gas-fired
heater. It uses air (oxygen) from
the room in which it is installed.
Provisions for adequate
combustion and ventilation air
must be provided. Refer to
"Adequate Combustion And
Ventilation Air" on pages 6-10 of
this manual.
This firebox may be installed in an aftermarket* manufactured (mobile) home,
where not prohibited by state or local codes.
* Aftermarket: Completion of sale, not for purpose of resale, from the manufacturer
(i.e. Installation of this product is permitted after the manufactured (mobile) home is sited).
Save this manual for
future reference.
WARNING:
Do not use a blower insert,
heat exchanger insert or other
accessories not approved
for use with this heater.
OWNER'S OPERATION AND INSTALLATION MANUAL
Model: 2020L Model: 2020N

TABLE OF CONTENTS
IMPORTANT: Read this owner's manual carefully and completely before trying to
assemble, operate, or service this fireplace. Improper use of this fireplace can cause
serious injury or death from burns, fire, explosion, electrical shock, and carbon poi-
soning.
WARNINGS/SAFETY INFORMATION
Install and use fireplace with care. Follow all local codes. In the absence of local codes, use
the latest edition of The National Fuel Gas Code ANSI Z223.1, also known as NFPA 54*.
Firebox must be electrically grounded in accordance with the National Electric Code, ANSI/
NFPA 70 (latest edition).
*Available from: American National Standards Institute, Inc.
1430 Broadway
New York, NY 10018
National Fire Protection Association, Inc.
Batterymarch Park
Quincy, MA 02269
LOCAL CODES
SECTION PAGE
LOCALCODES.......................................................................................................2
WARNINGS/SAFETYINFORMATION.................................................................2-4
2020 SPECIFICATIONS.....................................................................................4-5
PRODUCTFEATURES...........................................................................................6
LOCATINGTHEFIREPLACE.....................................................................................6
AIR FOR COMBUSTION ANDVENTILATION..................................................6-10
INSTALLATION................................................................................................10-11
SCREENREMOVAL.............................................................................................11
GASCONNECTION........................................................................................12-13
GASPRESSURECHECK.....................................................................................13
LOGASSEMBLY...................................................................................................14
OPERATING INSTRUCTIONS........................................................................15-17
CLEANING/SERVICING..................................................................................17-18
FLAMEAPPEARANCE.........................................................................................18
PARTSDIAGRAM& LIST.................................................................................19-20
BLOWER KIT WIRING DIAGRAM.......................................................................21
OPTIONALACCESSORIES.................................................................................22
WIRING GUIDE FOR 2020.............................................................................23-24
NOTES............................................................................................................25-27
HOWTOORDERREPAIR PARTS........................................................................28
2

WARNING: Any change to this heater or its controls can be dangerous.
1. This heater shall not be installed in a bedroom or bathroom.
2. Never install the fireplace
* in a recreational vehicle
* where curtains, furniture, clothing, or other flammable objects are less than
36 inches from the front, top, or side of the fireplace
* in high traffic areas
* in windy or drafty areas
3. Do not add extra logs or ornaments such as pine cones, vermiculite, or rock wool.
Using these added items can cause sooting.
4. You must operate this fireplace with the fireplace screen in place.
Make sure these parts are in place before running.
5. Do not allow fans to blow directly into the firebox. Avoid any drafts that alter burner flame
patterns. Ceiling fans can create drafts that alter burner flame patterns. Altered burner
patterns can cause sooting.
6. To prevent malfunction and/or sooting, an unvented gas heater should be cleaned at
least annually by a professional service person. More frequent cleaning may be required
due to excessive lint from carpeting, etc. It is imperative that control compartments,
burners and circulating air passageways be kept clean.
7. Correct placement of the ceramic fiber logs is necessary to avoid problems with sooting.
Sooting can settle on surfaces outside the heater and cause discoloration. See the
appropriate section of this manual for instructions.
8. This Vent-free gas log heater requires fresh air ventilation to run properly. See Air for
Combustion and Ventilation instructions in this owner's manual.
9. Do not run fireplace
* where flammable liquids or vapors are used or stored
* under dusty conditions
10. Do not use this fireplace to cook food or burn paper or other objects.
11. Never place any objects in the firebox or on logs.
12. Fireplace front and screen becomes very hot when running. Keep children and adults
away from hot surfaces to avoid burns or clothing ignition. Firebox will remain hot for a
time after shutdown. Allow surfaces to cool before touching.
13. Carefully supervise young children when they are in the room with fireplace.
14. Turn fireplace off and let cool before servicing. Only a qualified service person should
service and repair fireplace.
15. Operating vent-free gas log heaters in a fireplace above elevations of 4,500 feet could
cause pilot outage.
16. IMPORTANT: The fireplace hood must not be replaced with a hood/canopy which may
be provided with the decorative type unvented room heater.
WARNINGS/SAFETY INFORMATION CONTINUED
3

WARNINGS/SAFETY INFORMATION CONTINUED
17. CARBON MONOXIDE POISONING: Early signs of carbon monoxide poisoning are
similar to the flu with headaches, dizziness and/or nausea. If you have these signs,
obtain fresh air immediately. Have the heater serviced as it may not be operating
properly.
18. This vent-free gas fireplace is intended to be smokeless. If logs appear to smoke, turn off
the heater and call a qualified service person. Initial burn off may cause slight smoke and
odor during the first four hours of operation.
19. Input ratings are shown in BTU per hour and are for elevations up to 2,000 feet. For
elevations above 2,000 feet, input ratings should be reduced 4 percent for each 1,000
feet above see level. Refer to the National Fuel Gas Code.
20. The appliance and its appliance main gas valve must be disconnected from the gas
supply piping system during any pressure testing of that system at test pressures in
excess of 1/2 psig (3.5 kPa).
21. The appliance must be isolated from the gas supply piping system be closing its equip-
ment shutoff valve during any pressure testing of the gas supply piping system at
test pressures equal to or less than 1/2 psig (3.5 kPa).
22. Do not use this gas fireplace if any part has been under water. Immediately call a
qualified service technician to inspect the room heater and to replace any part of the
control system and any gas control which has been under water.
2020 SPECIFICATIONS
Natural Gas
Manifold Pressure Setting: 4" w.c.
Gas Inlet Pressure: Maximum 10-1/2" w.c.
Minimum 5" w.c.
Propane/LPG
Manifold Pressure Setting: 10" w.c.
Gas Inlet Pressure: Maximum 13" w.c.
Minimum 11" w.c.
Gas Rate Number
Model Number Type Max BTU/Hr Min BTU/Hr of Burners
2020N Manual 20,000 14,000 1
2020L Manual 20,000 14,000 1
Controls - Main control has 3 positions:
1. OFF - All gas to the burner is shut off at the control
2. PILOT - Valve position to light/maintain a standing pilot
3. ON - Opens valve for gas flow to complete system.
Piezo Ignitor - allows ignition of the pilot without the use of matches or batteries
ON/OFF Switch - Operates gas flow to the burner
HIGH / LOW Control - Infinite control :
Rotate knob clockwise to LOW, counter clockwise to HIGH.
4

2020 SPECIFICATIONS, CONTINUED...
5
FIREPLACE TOP VIEW
FIREPLACE FRONT VIEW FIREPLACE SIDE VIEW

PRODUCT FEATURES
AIR FOR COMBUSTION AND VENTILATION
This heater shall not be installed in a confined space or unusually tight construc-
tion unless provisions are provided for adequate combustion and ventilation air.
Read the following instructions to insure proper fresh air for this and other fuel-
burning appliances in your home.
WARNING
Today's homes are built more energy efficient than ever. New materials, increased insula-
tion, and new construction methods help reduce heat loss in homes. Home owners weather
strip and caulk around windows and doors to keep the cold air out and the warm air in. During
heating months, home owners want their homes as airtight as possible.
While it is good to make your home energy efficient, your home needs to breathe. Fresh air
must enter your home. All fuel-burning appliances need fresh air for proper combustion and
ventilation.
Exhaust fans, fireboxes, clothes dryers, and fuel-burning appliances draw air from the house
to operate. You must provide adequate fresh air for these appliances. This will insure proper
venting of vented fuel-burning appliances.
Operation
ThisVent-free Gas Fireplace requires no outside venting or chimney making installation easy
and inexpensive. When used without the optional blower, the fireplace requires no electricity
making it ideal for emergency backup heat.
Blower Accessory
The 2020 Vent-free Gas Fireplace will accept the Blower Kit accessory. The kit comes with
the variable blower. The variable blower allows you to select the fan speed you desire. The
blower circulates heated air from the fireplace into the room. Use of the blower is optional.
Planning
Plan where you will install the fireplace. This will save time and money later when you install
the fireplace. Before installation, consider the following:
1. Where the fireplace will be located. Allow for wall and ceiling clearances (see
Installation Clearances , pages 10 & 11).
2. Everything needed to complete installation.
3. This model CANNOT be installed in a bedroom or bathroom.
4. Proper air for combustion and ventilation (see below).
LOCATING FIREPLACE
6

AIR FOR COMBUSTION AND VENTILATION CONTINUED
Providing adequate ventilation
The following is excerpts from National Fuel Gas Code. NFPA 54/ANSI Z223.1, Section 5.3,
Air for Combustion and Ventilation.
All spaces in homes fall into one of the three following ventilation classifications:
1. Unusually Tight Construction; 2. Unconfined Space; 3. Confined Space.
The information on pages 6 through 10 will help you classify your space and provide ad-
equate ventilation.
UnusuallyTight Construction
The air that leaks around doors and windows may provide enough fresh air for combustion
and ventilation. However, in buildings of unusually tight construction, you must provide
additional fresh air.
Unusually tight construction is defined as construction where:
a. Walls and ceilings exposed to the outside atmosphere have a continuous
water vapor retarder with a rating of one perm (6x10 kg per pa-sec-m ) or less
with openings gasketed or sealed and
b. Weather stripping has been added on openable windows and doors and
c. Caulking or sealants are applied to areas such as joints around window and
door frames, between sole plates and floors, between wall-ceiling joints,
between wall panels, at penetrations for plumbing, electrical, and gas lines,
and at other openings.
If your home meets all of the three criteria above, you must provide additional fresh air. See
Ventilation Air From Outdoors , page 10.
If your home does not meet all of the three criteria above, proceed to page 8.
Confined Space and Unconfined Space
The National Fuel Gas Code (ANSI Z223.1, 1992 Section 5.3) defines a confined space as a
space whose volume is less than 50 cubic feet per 1,000 BTU per hour (4.8m per kw) of the
aggregate input rating of all appliances installed in that space and an unconfined space as a
space whose volume is not less than 50 cubic feet per 1,000 BTU per hour (4.8m per kw) of
the aggregate input rating of all appliances installed in that space. Rooms communicating
directly with the space in which the appliances are installed*, through openings not furnished
with doors, are considered a part of the unconfined space.
* Adjoining rooms are communicating only if there are doorless passageways or ventilation
grills between them.
3
3
7
-11 2

AIR FOR COMBUSTION AND VENTILATION CONTINUED
Determining ifYou Have a Confined or Unconfined Space
Use this worksheet to determine if you have a confined or unconfined space.
Space: Includes the room in which you will install the firebox plus any adjoining rooms with
doorless passageways or ventilation grills between the rooms.
1. Determine the volume of the space (length x width x height).
Length x Width x Height = _______________ cu. Ft. (volume of space)
Example: Space size 22 ft. (length) x 18 ft. (width) x 8 ft. (ceiling height) =
3168 cu. Ft. (volume of space)
If additional ventilation to adjoining room is supplied with grills or openings, add the
volume of these rooms to the total volume of the space.
2. Divide the space volume by 50 cubic feet to determine the maximum BTU/Hr the space
can support.
_________ (volume of space) 50 cu. Ft. = (Maximum BTU/Hr the space can support)
Example: 3168 cu. Ft. (volume of space) 50 cu. Ft. = 63.3 or 63,300 (maximum
BTU/Hr the space can support)
3. Add the BTU/Hr of all fuel-burning appliances in the space.
Vent-free Firebox __________________ BTU/Hr
Gas water heater* __________________ BTU/Hr
Gas furnace __________________ BTU/Hr
Vented gas heater __________________ BTU/Hr
Gas firebox logs __________________ BTU/Hr
Other gas appliances* + __________________ BTU/Hr
Total = __________________ BTU/Hr
Example: Gas water Heater 40,000 BTU/Hr
Vent-free firebox with log heater + 39,000 BTU/Hr
Total = 79,000 BTU/Hr
* Do not include direct-vent gas appliances. Direct-vent draws combustion air from
the outdoors and vents to the outdoors.
4. Compare the maximum BTU/Hr the space can support with the actual amount of
BTU/ Hr used.
______________ BTU/Hr (maximum the space can support)
______________ BTU/Hr (actual amount of BTU/Hr used)
Example: 63,300 BTU/Hr (maximum the space can support)
79,000 BTU/Hr (actual amount of BTU/Hr used)
The space in the above example is a confined space because the actual BTU/Hr used is
more than the maximum BTU/Hr the space can support. You must provide additional fresh
air.
Your options are as follows:
A. Rework worksheet, adding the space of an adjoining room. If the extra space provides
an unconfined space, remove door to adjoining room or add ventilation grills between
rooms. See Ventilation Air From Inside Building , page 9.
8

AIR FOR COMBUSTION AND VENTILATION CONTINUED
B. Vent room directly to the outdoors. See Ventilation Air from Outdoors , page 10.
C. Install a lower BTU/Hr firebox, if lower BTU/Hr size makes room unconfined.
If the actual BTU/Hr used is less than the maximum BTU/Hr the space can support, the space
is an unconfined space. You will need no additional fresh air ventilation.
WARNING
If the area in which the heater may be operated is smaller than that defined as an
unconfined space or if the building is of unusually tight construction, provide ad-
equate combustion and ventilation air by one of the methods described in the Na-
tional Fuel Gas Code, ANSI Z223.1, Section 5.3 or applicable local codes.
VENTILATION AIR
Ventilation Air From Inside Building
This fresh air would come from an adjoining unconfined space. When ventilating to an ad-
joining unconfined space, you must provide two permanent openings: one within 12" of the
ceiling and one within 12" of the floor into adjoining room ( see options in Figure 1) .
Follow the National Fuel Gas Code NFPA 54/ ANSI Z223.1, Section 5.3, Air for Combustion
and Ventilation for required size of ventilation grills or ducts.
WARNING
Rework worksheet, adding the space of the adjoining unconfined space. The
combined spaces must have enough fresh air to supply all appliances in both
spaces.
Figure 1 - Ventilation Air from Inside Building
VENTILATION GRILLS INTO
ADJOINING ROOM.
OPTION 2
VENTILATIONGRILLS
INTOADJOINING
ROOM.
OPTION 1
OR REMOVE DOOR INTO
ADJOINING ROOM.
OPTION 3
9

AIR FOR COMBUSTION AND VENTILATION CONTINUED
Ventilation Air From Outdoors
Provide extra fresh air by using ventilation grills or ducts. You must provide two permanent
openings: one within 12" of the ceiling and one within 12" of the floor. Connect these items
directly to the outdoors or spaces open to the outdoors. These spaces include attics and
crawl spaces. (
See Figure 2 )
IMPORTANT:Do not provide openings for inlet or outlet air into attic if attic has a thermostat-
controlled power vent. Heated air entering the attic will activate the power vent.
WARNING
Maintain the minimum clearances. If you can, provide greater clearances from
floor, ceiling, and adjoining wall.
INSTALLATION CLEARANCES
Carefully follow the instructions below. This will ensure safe installation.
MinimumWall and Ceiling Clearances ( see Figure 3 )
A. Clearances from the side of the firebox opening to any combustible wall should not
be less than 12 inches.
B. Clearances from the top of the firebox opening to the ceiling should not be less than
42 inches.
Mantel Clearances for Conventional Installation
INSTALLATION
Figure 2 - Ventilation Air from Outdoors
OUTLET AIR
OUTLET
AIR
INTAKE
AIR
INTAKE AIR
VENTILATED ATTIC
VENTILATED
CRAWL SPACE
TO
CRAWL
SPACE
TO
ATTIC
10

MINIMUM CLEARANCES TO COMBUSTIBLES
12" TO
SIDE WALL
42"
RIGHT SIDE REQUIRES
18" TO COMBUSTIBLES
FOR ACCESS DOOR TO
CONTROLS.
Figure 3 - Minimum Clearance to Wall and Ceiling
SCREEN REMOVAL
11
1. Remove the two(2) screws in the top of the screen.
2. Lean the top of the screen outward and lift slightly up and out of the screen retainer.
3. To reinstall the screen, reverse steps 1 and 2.

GAS CONNECTION
CAUTION
Use new black iron or steel pipe only. Internally tinned copper tubing can be
used in some areas when permitted by local codes. Only use pipe of 1/2" or
greaterdiametertoallowfullgasvolumetoheater.Excessivepressurelosswill
occur if the pipe is too small.
A manual shutoff valve, union and plugged 1/8" NPT pressure tapping point
must be installed upstream of the heater (FIGURE 8).
A sediment trap must be installed upstream of the heater to prevent moisture
and contaminants from passing through the pipe to the heater controls and
burners. Failure to do so could prevent the heater from operating reliably
(FIGURE 8).
A qualified gas appliance installer must connect the fireplace to
the gas supply. Consult all local codes.
TO HEATER
CONTROL VALVE STAINLESS
FLEXIBLE TUBE
PIPE
COUPLING
PIPE
MANUAL
SHUTOFF VALVE
TEE JOINT
PIPE NIPPLE
CAP
SEDIMENT TRAP
IMPORTANT:Loosenthepipeadapter
on the flex tube before installing to the
systempiping.
FIGURE 5. Gas Connection
CHECKGAS TYPE:Thegassupplymustbethesameasstatedonheater'sratingplate.Ifthe
gassupplyisdifferent,DONOTINSTALLtheheater.Contactyourdealerforthecorrectmodel.
WARNING
Connecting directly to an unregulated propane/LPG tank can
cause an explosion.
NOTICE
12

Theheaterregulatorcontrolstheburnerpressurewhichshouldbecheckedatthepressuretest
point located on the front of the main control and is accessible by removing the control panel
on the right side of the heater.
The pressure should be checked with the heater burning and the control set to high (HI).
The pressure regulator is preset and locked to avoid tampering. If the pressure is not as
specified in Product Specifications (Page 5), contact your dealer and replace the regulator.
The appliance and its individual shutoff valve must disconnected from the gas supply piping
systemduringanypressuretestingofthatsystemattestpressuresinexcessof½psi(35kPa).
GAS CONNECTION, CONTINUED...
GAS PRESSURE CHECK
Thegasinletconnectionis 3/8" NPT, made at thetopofthe
controlcoverinsidetheaccessdoorofthemantel. Rungas
line from the gas supply to the connection. A flex pipe
connector is suggested for easy connection.
Testall gas joints from the gasmeter to the heater for leaks
usingsoap and water solution after completing connection.
DO NOT USE AN OPEN FLAME.
FIGURE 6. Flex Pipe Connected to control
GAS INLET
13

LOG ASSEMBLY
LOG POSITIONING
This unit is supplied with a set of four ceramic fiber logs. Do not handle these logs with your
bare hands! Always wear gloves to prevent skin irritation from ceramic fibers. After handling
logs, wash your hands gently with soap and water to remove any traces of fibers.
PROPER INSTALLATION SEQUENCE:
1. Installtherearlog(#2)on therearsetoflocators. Visuallycheckto verifythelogissecurely
placed on the locators.
2. Install the front log (#1) on the front locators. Visually check to verify the log is securely
placed on the locators.
3. Place the cross logs on the locator studs in the log as shown. The flame should not touch
the cross logs otherwise suiting will occur.
WARNING: Failure to position the
parts in accordance with these
diagrams or failure to use only
parts specifically approved with
this heater may result in property
damage or personal injury.
WARNING
The positioning of the logs is critical to the safe and clean
operationof this heater.Sooting and otherproblemsmayresult if
the logs are not properly and firmly situated in the appliance.
Neveraddadditionallogsorembellishmentssuchaspinecones,
vermiculite or rock wool to the heater.
FIGURE 8 - Log Set Assembly
14
#2
#1

OPERATING INSTRUCTIONS
Avoid any drafts that alter the burner flame patterns. Do not allow fans to blow directly into the
heater. Do not place a blower inside burn area of fireplace. Ceiling fans may create drafts that
alter burner flame patterns. Sooting and improper burning will occur.
Thisvent-freegasheaterisintendedtobesmokeless.Iflogsappeartosmoke,turnofftheheater
andcall a qualified service person. Initial burn off may causeslight smoke and odor during the
first four hours of operation.
FOR YOUR SAFETY READ BEFORE LIGHTING
WARNING:Ifyoudonotfollowtheseinstructionsexactly,afireor
explosionmayresultcausingpropertydamage,personalinjuryor
loss of life.
This appliance has a pilot which can be light with the equipped piezo ignitor. When
lighting the pilot, follow these instructions exactly.
BEFORE LIGHTING smell all around the appliance area for gas. Be sure to smell next
to the floor because some gas is heavier than air and will settle on the floor.
WHAT TO DO IF YOU SMELL GAS
• Do not attempt to light any appliance.
• Do not touch any electric switch; do not use any phone in your building.
• Immediately call your gas supplier from a neighbor's phone. Follow the gas
supplier's instructions.
• If you cannot reach your gas supplier, call the fire department.
Use only your hand to push in or turn the gas control knob. Never use tools. If the knob
will not push in or turn by hand, don't try to repair it, call a qualified service technician.
Force or attempted repair may result in a fire or explosion.
Donotuse this appliance if any parthasbeen under water. Immediately call a qualified
servicetechniciantoinspecttheapplianceandtoreplaceanypartofthecontrolsystem
and any gas control which has been under water.
A.
B.
C.
D.
FOR YOUR SAFETY
Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any
other appliance.
Do not place clothing or any other flammable material on or near the appliance.
15
WARNING

Ifthedoesnotpopupwhenreleased,stop
andimmediatelycallyourservicetechni-
cian or gas
supplier. If the pilot will not
stay lit after several tries, turn control
knob to "OFF" and call your gas supplier.
9. Turnvalveknobclockwise to"ON".
10. Wait about one minute then turn burner
switch (D) to "ON". It will take a few
minutesforthe thermopilelocatedontop
of the pilot to heat up.
NOTE:Ifunitisequippedwithremote"on-off"
wallswitch,switchmustbein"on"positionfor
burner to light.
11. Adjustflameheightwiththehigh-lowknob(C).
12. Turnonallelectricalpowertotheappliance.
13. Close access door.
NOTE: It is normal for the new heater to give
offsomeodorthefirsttimeitisburned. Thisis
duetothecuringofthepaintandanyundetec-
ted oil from the manufacturing process.
It is recommended that you burn your new
heater for at least two(2) hours the first time
you use it. If optional fan kit is installed, leave
it turned off for the break in period.
OPERATING INSTRUCTIONS, CONTINUED
1. Open access door.
2. Turn switch (D) to "OFF"
3. Unplug all electric power if service is to be performed.
4. Push in gas control knob slightly and turn clockwise to the "OFF" position.
5. Close access door.
TURN OFF GAS TO APPLIANCE
16
1. STOP! Read the safety information on
the previous page.
2. Set the thermostat to lowest setting.
3. Turn off all electrical power and open the
access door.
4. Push in gas control (B) slightly and turn
clockwise to "OFF".
5. Push "ON / OFF" switch to "OFF" posi-
tion.
NOTE: Knob cannot be turned from "PILOT"
to"OFF"unlessknobispushedinslightly. Do
notforce.
6. Waitfive(5)minutestoclearoutanygas.
Then smell for gas, including near the
floor. Ifyou smellgas,STOP! Follow"B"
in the safety information on the previous
page. If you don't smell gas, go on to the
nextstep.
7. Depressknob(B)andturngascontrol
knobcounterclockwise to "Pilot".
8. Push in knob (B) all the way and hold in.
Immediately light the pilot by pushing in
onthepiezobutton(A). Continuetohold
thecontrolknobinforaboutone(1)minute
afterthepilot islit. Releaseknobanditwill
popbackup.Pilotshouldremainlit. Ifit
goesout, repeatsteps4through8.
LIGHTING INSTRUCTIONS
C
A
BD
PILOT LOCATION
TOP VIEW OF BURNER ASSEMBLY

OPERATING INSTRUCTIONS, CONTINUED
MATCH LIGHTING INSTRUCTIONS
If the pilot will not light using the piezo ignitor, you can light the pilot with a match. First, locate
the pilot. The pilot is located between the two burner tubes on the right end (facing the unit),
inside the firebox. To light pilot with a match, move the gas control (knob 1, pg. 16) to the pilot
positionand hold down. Light match and placenear pilot. Once pilot is lit,continue to hold the
knob for about ten seconds. Then follow steps 7 thru 10 on page 16.
WARNING
Wait 30 seconds before readjusting the heater when the control
has been turned down to a lower setting.
PILOT FLAME
The pilot flame should always be present
when the heater is in operation and should
just touch the top of the thermocouple tip
(FIGURE 9).
If the pilot flame does not touch the thermo-
couple, then the main burner is unlikely to
function reliably (FIGURE 10).
FIGURE 9 - Pilot Flame FIGURE 10 - Incorrect Shape of Pilot Flame
Annualinspectionand cleaningbyyourdealeror qualifiedservicetechnicianis recommended
to prevent malfunction and/or sooting.
Remove logs, handling carefully by holding gently at each end. Gloves are recommended to
prevent skin irritation from ceramic. If the skin becomes irritated, wash gently with soap and
water. Refer to page 14 for correct log placement.
CLEANING / SERVICING
WARNING Turn off heater and allow to cool before cleaning.
17
CHECKING FLAME APPEARANCE
Flames from the pilot, front and rear burner should be visually checked when the heater is
installed. In addition a periodic visual check of the flames should be made.

CLEANING / SERVICING, CONTINUED
FLAMES
Theflamesbehind log#1,andinfront oflog#2,should beyellowwithablue base. Theflames
should not be impinging on either of the cross logs. (See Below, Figure 11)
FLAME APPEARANCE
FIGURE 11 - Flames, Natural Gas and LP Gas
#2 #1
18
Periodic Cleaning
• Do not use cleaning fluid to clean logs or any part of heater.
• Logs - Brush with soft bristle brush or vacuum with brush attachment.
• Vacuum loose particles and dust from the front and rear burner, control, and piezo.
• Inspect burner's and air intake hole. Remove lint or particles with vacuum.
• External case should be dusted and wiped with a wet soapy cloth.
Annual Cleaning/Inspection
• Inspect and clean burner air intake holes.
• Inspect and clean all burner ports.
• Inspect ODS pilot for operation and accumulation of lint at air intake holes.
• Verify flame pattern and log placement for proper operation.
• Verify smooth and responsive ignition of main burner and rear burner.
In normal operation at full rate after 15 minutes the following flame appearance should be
observed.
CAUTION: Label all wires prior to disconnection when servicing controls. Wiring errors can
cause improper and dangerous operation. Verify proper operation after servicing.

PARTS DIAGRAM AND PARTS LIST
19
1
2
3
4
5
6
7
8
9
10
11 12
13
14
18
19
22
23
24
28
B
DA
C
25
26
20
21
27
15
16
17

KEY PART # DESCRIPTION QTY.
1 24988B LEFT SIDE CABINET 1
2 24993B BURNER PLATE 1
3 24991B FIREBOX BOTTOM 1
4 89921 "O.P. AMERICA" NAT. PILOT 1
- 89922 "O.P. AMERICA" L.P. PILOT 1
5 80423 PIEZO IGNITOR WIRE 2
6 89842 3/16" BRASS BALL SLEEVE 1
7 89841 3/16" COMPRESSION NUT 1
8 81206 PILOT TUBE (18") 1
9 89856 3/16" LOXIT FITTING 1
10 89965 BURNER CONTROL FITTING (LP) 1
- 89966 BURNER CONTROL FITTING (NAT) 1
11 89822 BURNER 1
12 89761 PIEZO IGNITOR 1
13 C42373 ON/OFF TOGGLE SWITCH 1
14 24996B CONTROL COVER 1
15 81198 MILIVOLT CONTROL (NATURAL) 1
- 81202 MILIVOLT CONTROL (LIQUID PROPANE) 1
** 83464 10-32 x 3/8 MACHINE SCREW 4
16 24788B CONTROL BRACKET 1
17 80376 WIRE ASSEMBLY 1
18 24987B RIGHT SIDE CABINET 1
19 24994 FIREBOX SUPPORT 1
20 24986B CABINET BOTTOM/BACK 1
21 24998B BLOWER BAFFLE 1
22 24990B FIREBOX WRAPPER 1
23 24992B FIREBOX TOP 1
24 24989B CABINET TOP 1
25 25001B SCREEN 1
26 25000B SCREEN RETAINER/MANTEL STOP 2
27 24999B BLOWER PLATE 1
28 89826 LOG SET 1
a 89826-1 FRONT LOG 1
b 89826-2 REAR LOG 1
c 89826-3 RIGHT CROSS LOG 1
d 89826-4 LEFTCROSS LOG 1
** 89967 MANTEL 1
** 89390A RUBBER GROMMET 1
2020 ASSEMBLY PARTS LIST
20
** = NOT SHOWN