BuckMaster CR18 User manual

WARNING: If the following 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 the gas supplier, call the fire department.
-Installation and service must be performed by a qualified installer, service agency, or the gas supplier.
-This appliance is intended for supplemental heating.
This is an unvented and vented 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 Section V, page 34.
This appliance may be installed in an aftermarket, permanently located, manufactured (mobile) home, where
not prohibited by local codes.
This appliance is only for use with the type of gas indicated on the rating plate. This appliance is not
convertible for use with other gases.
MODEL CR/DX MANUAL
VENT-FREE OR VENTED GAS LOGS
CR/DX 18”, 24”, 30” & CR 24” MOUNTAINEER ,
CR24 ASPEN LOG SETS
FOR NATURAL OR LIQUID PETROLEUM (L.P.)
WITH OPTIONAL HEAT SHIELD MODEL (19HS)
New Buck Corporation
P.O. Box 69
200 Ethan Allen Drive
Spruce Pine, NC 28777 Revised January 2013
www.buckstove.com
INSTALLER: Leave this manual with the appliance.
CONSUMER: Retain this manual for future reference.
WARNING: This appliance is equipped for (natural or propane) gas. Field conversion is not permitted.

TABLE OF CONTENTS
SECTION I: Safety Information ..................................................................................................3
SECTION II: Residential Installation-Unvented Gas Logs.......................................................6
Clearances .....................................................................................................................................7
Gas Connection.............................................................................................................................8
Preparing Log Kit..........................................................................................................................8
Log Placement Diagrams........................................................................................................ 9-16
Gas Pressure Check.....................................................................................................................17
Lighting Instructions-Millivolt Valve (SIT) ...............................................................................18
Lighting Instructions-Modulating Valve (SIT)...........................................................................22
Lighting Instructions-Manual Valve (SIT) .................................................................................26
Flame Check................................................................................................................................30
Heat Output.................................................................................................................................30
SECTION III: Installation-Heat Shield.......................................................................................31
Wiring Diagram...........................................................................................................................33
SECTION IV: Installation-After Market Mobile Home.............................................................35
SECTION V: Producing Adequate Combustion and Ventilation Air.........................................35
Air For Combustion And Ventilation Inside Building................................................................38
Air For Combustion And Ventilation Outdoors..........................................................................39
SECTION VI: Vented Logs........................................................................................................40
Important Safeguards ..................................................................................................................42
Cleaning ......................................................................................................................................42
Troubleshooting ..........................................................................................................................43
Servicing and Replacement Parts................................................................................................48
Warranty......................................................................................................................................52
Owner Registration Card..............................................................................................Back Cover

Page 2
SECTION I
SAFETY INFORMATION
WARNINGS
IMPORTANT: READ THIS OWNER'S MANUAL CAREFULLY AND
COMPLETELY BEFORE TRYING TO ASSEMBLE, OPERATE, OR SERVICE THE
APPLIANCE. IMPROPER USE OF THESE LOGS CAN CAUSE SERIOUS INJURY
OR DEATH FROM BURNS, FIRE, EXPLOSION, AND CARBON MONOXIDE
POISONING.
Early signs of carbon monoxide poisoning resemble the flu, with headaches, dizziness, and/or
nausea. If you have these signs, the heater may not be working properly. Get fresh air at once!
Turn off gas. Have burner serviced. Some people (such as pregnant women, persons with heart
or lung disease, persons with anemia, those under the influence of alcohol, and those at high
altitudes) are more affected by carbon monoxide than others. Make certain you understand and
read all Warnings. Keep this manual for reference. It is your guide to safe and proper opera-
tion of these logs.
1. Install log set only in a solid-fuel-burning masonry fireplace or U.L. listed pre-
fabricated fireplace constructed of non-combustible materials.
2. The installation must conform with local codes or, in the absence of local codes, with the
National Fuel Gas Code, ANSI Z223.1/NFPA 54.
3. This appliance may be installed in an After Market* Manufactured (Mobile) Home,
where not prohibited by state or local codes.
(* After Market: Completion of sale, not for purpose of resale from the manufacturer.)
NOTE: This appliance is only for use with the type of gas indicated on the rating plate. This
appliance is not convertible for use with other gases.
NOTE: See Section IV for Mobile Home Installation and Producing adequate Combustion and
Ventilation Air.
IMPORTANT: VENT-FREE HEATERS ADD MOISTURE TO THE AIR. ALTHOUGH
THIS IS BENEFICIAL, INSTALLING HEATER IN ROOMS WITHOUT ADEQUATE
VENTILATION MAY CAUSE MILDEW TO FORM FROM TOO MUCH MOISTURE.
4. Never install the log set:
-In a recreational vehicle.
-Where curtains, furniture, clothing, or other flammable objects are less than 42" from the
front of the heater.
-In high traffic areas or in windy areas.
NOTE: These log sets comply with both the ANSI Z21.11.2b-2010 "Unvented Room
Heater" and ANSI Z21.60b-2004. CSA 2.26-2004 Decorative Appliance For "Solid Fuel
Burning Fireplace".
WARNING: ANY CHANGE TO THIS HEATER OR ITS CONTROLS CAN BE
DANGEROUS.

Page 3
5. Two models are available. One specific model for propane (LP) and one for natural gas.
Use the correct gas type for your home. This unit is not field convertible.
6. If these gas logs are for use with propane gas, do not place propane suppl tank(s) inside
any structure. Locate propane supply tank(s) outdoors.
7. 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.
8. When operated for the first time, the logs may emit a "paper burning" smell. This smell
will gradually diminish and will be totally eliminated after the first few hours of
operation. Run the gas logs with the flue damper open during this time. Do not use the
blower at this time.
9. This heater shall not be installed in unusually tight construction unless provisions are
provided for adequate combustion and ventilation air. "See Section V “Producing
Adequate Combustion and Ventilation Air”, page 34.
10. Surface of gas logs becomes very hot when operating. Keep children and adults away
from hot surface. Gas logs will remain hot for some time after shutdown. Allow surface
to cool before touching.
11. Never place any objects on these gas logs.
12. These gas logs MUST NOT BE USED with glass doors in the closed position.
13. If equipped, fresh air damper must be closed.
14. Keep appliance area clean and free from combustible materials, gasoline, and other
flammable vapors and liquids. Keep burner and control compartment
clean. See installation and operating instructions accompanying heater.
15. If burner shuts off, do not relight until you provide fresh outside air. If burner keeps
shutting off, have unit serviced.
16. An unvented room heater having input rating of more than 10,000 BTU per hour
shall not be installed in a bedroom or bathroom.
17. Maintain clearance around air openings.
WARNING: This appliance is equipped for (natural or propane) gas. Field conversion
is not permitted.

Page 4
18. Do not use the appliance if any part has been under water. Immediately call a qualified
service technician to inspect the appliance and to replace any part of the control system and
any gas control which has been under water.
19. Turn off the gas logs and let cool before servicing.
20. The logs are made of light weight refractory. Hold both ends of the logs when removing or
replacing.
21. Make sure any safety screen or guard (if any) that was removed for servicing is in place
before operating gas logs.
22. Strong drafts, such as a ceiling fan placed directly in front of the fireplace, may create
sooting. Sooting may discolor walls.
23. Installation and repair should be done by a qualified service person. The heater and the gas
logs should be inspected before use and at least annually by a professional service person.
More frequent cleaning may be required due to excessive lint from carpeting, bedding
materials, etc. It is important that the control compartment, burners, and circulating air
passageways of these gas logs be kept clean and clear.
24. Do not use these gas logs for burning trash or cooking. Never place matches, paper,
garbage or any other material on top of logs or into the flames.
25. Do not install or operate these gas logs in areas where impurities in the air exist (such as
tobacco smoke and heavy cooking grease). Particles from impurities may discolor walls.
26. The appliance and its individual shutoff 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
psi (3.5 kPa).
27. The appliance must be isolated from the gas piping system by closing its individual manual
shut off valve during any pressure testing of the gas supply piping system at test pressures
equal to or less than 1/2 PSIG.
28. Any outside air ducts and/or ash dumps in the fireplace shall be permanently closed at
time of appliance installation.
29. Due to high temperatures, the appliance should be located out of traffic and away from
furniture and draperies.
31. Do not place clothing or other flammable material on or near the appliance.
WARNING: State or local codes may only allow operation of this appliance in a vented
configuration. Check your state on local codes.

Page 5
SECTION II
RESIDENTIAL INSTALLATION OF GAS LOGS
FIREPLACE PREPARATION
The fireplace needs to be prepared before installing the gas logs.
A. Turn off the gas supply to the fireplace.
B. Any outside air ducts on the fireplace shall be permanently closed at the time of the appliance
installation.
WARNING: 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.
WARNING: DO NOT ALLOW FANS TO BLOW DIRECTLY INTO THE FIREPLACE.
AVOID ANY DRAFTS THAT ALTER BURNER FLAME PATTERN.
LOCATION
Centrally locate the gas logs in the fireplace. Place them deep enough into the fireplace to accomplish
adequate draft (if use as a vented gas log set is planned). Ensure that the front of the logs sit inside the
front edge of the fireplace.
For your convenience, we have furnished two holes in the back bottom bar of the burner base to fasten
it to the floor if you deem it necessary.
NOTE: IF THE EXISTING FIREPLACE IS EQUIPPED WITH A SCREEN IT MUST BE IN
PLACE WHEN THE APPLIANCE IS OPERATING. THE SCREEN SHALL HAVE
ADEQUATE OPENING(S) FOR INTRODUCTION OF AIR FOR COMBUSTION AND
VENTILATION.
NOTE: MAINTAIN PROPER CLEARANCE FOR PURPOSE OF SERVICING, PROPER
INSTALLATION, AND OPERATION.
Mantel Minimum Clearances for a
listed Zero Clearance Firebox or
a Masonry Fireplace.
*WARNING: Canopy model number
MAPSFPC must be used at all times unless a
10-inch mantel is installed at 36-inches
above the fireplace opening. (Can be
obtained from your local dealer or
purchased from the factory.)
16"
13"
10"
FIGURE 1
ANGLE MANTEL
MAX. OF 2 1/2"
21"
17"
14"
FLAT MANTEL
4" *

Page 6
WARNING: THIS APPLIANCE IS FOR INSTALLATION ONLY IN A SOLID FUEL
BURNING MASONRY OR UL127 FACTORY BUILT FIREPLACE OR IN A LISTED
VENTLESS FIREBOX ENCLOSURE.
IT HAS BEEN DESIGN CERTIFIED FOR THESE INSTALLATIONS. EXCEPTION:
DO NOT INSTALL THIS APPLIANCE IN A FACTORY BUILT FIREPLACE THAT
INCLUDES INSTRUCTIONS STATING IT HAS NOT BEEN TESTED OR SHOULD
NOT BE USED WITH UNVENTED GAS LOGS.
INSTALLATION AND CLEARANCES
To ensure a safe installation into an existing solid fuel burning fireplace, the following
instructions must be carefully followed.
NOTE: Gas control knobs are located on right side facing unit.
1) Side wall Clearances:
Clearance from the right and left side of the fireplace opening to any adjacent
combustible wall should not be less than 8".
2) Ceiling Clearances:
The ceiling height should not be less than 42" from the top of the fireplace opening.
3) Mantel Clearances:
For clearances from top of heater to mantel or mantel supports see Figure 1.
4) Front Clearances:
No objects should be placed within 24" from the front of the fireplace opening. .
MINIMUM FIREPLACE DIMENSIONS FOR LOG SETS MANUFACTURED BY NEW
BUCK CORPORATION FOR SOLID FUEL BURNING FIREPLACE OR MASONRY
FIREPLACE AND PREFAB OR MANUFACTURED FIREPLACES.
NOTE: When using logsets with the Model 19HS heat shield see page 30 for clearances.
MODEL HEIGHT OF WIDTH OF WIDTH AT DEPTH OF
(CR, DX) OPENING OPENING REAR FIREPLACE
AT FRONT
18 17"25"18"14"
24 17"30"24" 14"
30 17"36"26"14"
WARNING: ANY CHANGE TO THIS HEATER OR ITS CONTROLS CAN BE
DANGEROUS.
WARNING: Cutting any sheet metal parts of the solid-fuel burning fireplace or listed
ventless firebox enclosure in which the unvented fireplace insert (log set) is to be installed
is prohibited.
NOTE: Smoke shelves, shields and baffles may be removed if attached by mechanical
fasteners.
NOTE: Refractory, glass doors, screen rails, screen mesh and solid-fuel log grates (if
applicable) can be removed from the fireplace before installing the unvented fireplace
insert.
NOTE: Glass doors must be in the open position, and screens must be in place in the
closed position when the appliance is in use.

Page 7
GAS CONNECTION
Check gas type. Use only the type of gas indicated on the valve rating plate. If the type of gas
listed on the plate is not your type of gas supply, DO NOT INSTALL. Contact your dealer for
proper model.
Always use an external regulator for all LP heaters to reduce the supply tank pressure to a
maximum of 13" W.C. This is in addition to the regulator furnished with the heater.
Warning: Connection directly to an unregulated LP tank can cause an explosion.
The normal gas connection is 3/8" N.P.T. made at the right side facing the log set. If a left side
connection is desired, the connecting pipe may be routed under the back of the burner base to
terminate at the right hand side for connection to the inlet of the valve.
NOTE: The connecting pipe must be internally tinned copper tubing for use with natural gas.
Test for leaks using a solution of soap and water after completing the connection. DO NOT
USE OPEN FLAME.
PREPARING LOG KIT
Open the cartons containing the Burner Base and the logs. Inside one of the cartons you will
find the Burner Base. The logs are boxed separately.
WARNING: POSITIONING OF LOGS IS VERY CRITICAL (See Figure 2).
LOG PLACEMENT FOR 18 (FIBER) LOG SETS:
1) Place back log (flat faced)#1 on back log support. The log has alignment notches on each
corner.
2) Place ember strip (wrapped in cardboard box)#2 on front bottom andirons. Center from
side to side.
3) Next place middle log (with ember burn out)#3 over front burner tube. The two ends are
notched out on bottom to ensure proper fitting over ends of burner.
4) Right top log is a “y” shaped log #4. The round stem lays in the notched out space on the
right top corner of back log. There is a pin on the middle log, and a hole on the flattened
end of the top left log. Place hole over pin.
5) Place one end of the left top log #5 in notch of left corner on back log and the other end of
the left top log in notch on top middle log.
Solid fuels shall not be burned in the same fireplace where an unvented room heater has been
installed.
NOTE: The following label has been provided with this appliance and must be read and then
attached to the floor of the fireplace or firebox area beneath the appliance. The label is a peel
and stick label. Make sure the area is cleaned before attaching the label to it.
WARNING: This solid-fuel burning fireplace or listed ventless enclosure has been
converted for use with an unvented fireplace insert only. A solid-fuel burning fireplace
cannot be used for burning wood or solid fuels unless all original parts have been
replaced, and the fireplace re-approved by the authority having jurisdiction. A ventless
firebox enclosure cannot be used with an unvented gas log unless all original parts have
been replaced, and the ventless firebox enclosure re-approved by the authority having
jurisdiction.

Page 8
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.
18 (Fiber)
24 (Fiber) 1
2
3
5
4
5 4
13
2
NEWER LOG SETS
MAY HAVE A TWO
(2) PIECE LOG.
LOG PLACEMENT FOR MODEL 24 (FIBER) LOG SETS (See Figure 3.)
1) Front log #1 has two notches in bottom of log. Place the log so the notches are over the 3/4" x
3/4" square bar of each leg of burner base.
2) Place middle log #2 over front burner tube. There are alignment notches in each corner.
3) Rear log #3 has notches in both back corners. Place in the back log holders at the rear of the
burner base.
4) Place the big end of right top log #4 over pin in the middle of rear logs. The smaller end also
has a hole that places over the pin in the middle log.
5) Left top log #5 sits in notches on rear and middle logs.
Figure 3
Figure 2

Page 9
Figure 4
LOG PLACEMENT FOR MODEL 30 (FIBER) LOG SETS:
Repeat steps for Model 24 (Fiber) Log Placement except before placing #1 front log into
position, place the retrofit grate that comes with Model 30 logs over the two 3/4" x 3/4" square
bar on legs of burner base.
30 (Fiber)
Retrofit Grate
5
4
32
1
NEWER LOG SETS
MAY HAVE A TWO
(2) PIECE LOG.
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.

Page 10
CR18 LOG SET
(WITH DX18MV LOG BASE)
Open the cartons containing the Burner Base and the logs. Inside one of the cartons you will find the Burner Base. The logs are
boxed separately.
CR18: 1) Rear Log, 2) Ember strip, 3) Front log, 4) Top Log.
WARNING: POSITIONING OF LOGS IS VERY CRITICAL. (See Figure 5.)
LOG PLACEMENT FOR CR18 LOG SETS:
1) Place rear log #1 on rear log support. The log has two alignment notches on back.
2) Place ember strip #2 on front bottom andirons. Center from side to side.
3) Next place front log #3 between rear and front burner tubes on the log supports for proper alignment.
4) Left top log #4 has two holes provided to fit over the pins in the front log to insure proper fit.
1
3
2
4
Figure 5
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.

Page 11
CR24 LOG SET
(WITH DOUBLE BURNER DX24MV LOG BASE)
Open the cartons containing the Burner Base and the logs. Inside one of the cartons you will find the
Burner Base. The logs are boxed separately.
CR24: 1) Rear Log, 2) Middle Log, 3) Front Log, 4) Right Top Log, 5) Left Top Log, 6) *Extreme Front
log used only with C24DTB Tri Burner Base.
WARNING: POSITIONING OF LOGS IS VERY CRITICAL. (See Figure 6.)
LOG PLACEMENT FOR CR24 LOG SETS:
1) Align the two holes on the bottom of the rear log #1 over rear base legs and slide down to the supports.
2) Place the middle log #2 on the support between the front and rear burner sliding log flush to the back of
the support. Center from side to side.
3) Next place front log #3 behind the front of the andirons, resting on top of its legs
4) Right top log #4 has two holes provided to fit over the pins in the right side of the middle log to ensure
proper fit.
5) Left top log #5 has two holes provided to fit over the pins in the left side of the middle log to ensure
proper fit.
1
2
3
5 4
* NOTE: Discard log #6 on
double burner log base. 6
Figure 6
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.

Page 12
CR24 MOUNTAINEER LOG SET
(WITH DOUBLE BURNER DX24MV LOG BASE)
WARNING: POSITIONING OF LOGS IS VERY CRITICAL. (See Figures 6a & 6b)
LOG PLACEMENT FOR CR24 MOUNTAINEER LOG SETS:
1) Align the hole on back of the rear log (#1) with the right rear leg and slide down to the supports. Left side
of rear log (#1) will simply rest on left support.
2) Place the middle log (#2) on the support between the front and rear burner sliding log flush to the back of
the support. Center from side to side.
3) Next place front log (#3) behind the front of the andirons, resting on top of its legs. Small notch on the
right of the log (#3) should line up with the right andiron support.
4) Left top log (#4) has two holes provided to fit over the pins in the left side of the rear log (#1) and the left
side middle log (#2) to ensure proper fit.
5) Center top log (#5) has a hole to fit over the pin in the center of the rear log (#1). The other end of the
center top log (#5) comes to rest on the flattened area in the center of the middle log (#2).
6) Right top log (#6) has a hole to fit over the pin on the right side of the middle log (#2). The other end of
the right top log (#6) comes to rest on the top right of the front log (#3) pointing towards the andiron.
Completed Log Placement (Front View)
Figure 6a.
Completed Log Placement (Left Angle View)
Figure 6b.
4
1
2
3
5
6

Page 13
CR30 LOG SET
(WITH DOUBLE BURNER DX24MV LOG BASE)
Open the cartons containing the Burner Base and the Log Set. Inside one of the cartons you will find the
Burner Base. The Log Set is boxed separately.
CR30: 1) Rear Log. 1) Middle Log. 2) Front Logs. 3A, 3B) Right Top Log. 4) Left Top Log 5).
There are (2) two brass round knobs to enhance your Log Set. The knobs are threaded in the bottom.
Position the knobs over the threaded studs of the front top andirons and tighten.
Remove the Front Log(s) Base Plate. The Base Plate sets just behind the front andirons with the two (2)
locator studs facing upward. Insure that the Base Plate is completely seated on to the log base. See dia-
gram bellow.
WARNING: POSITIONING OF THE LOGS IS VERY CRITICAL.
LOG PLACEMENT FOR CR30 LOG SET (SPLIT FRONT LOG) :
1) Align the two notches on the bottom rear of the Rear Log #1 over the rear log supports mounted to
the rear legs of the burner base.
2) Place the Middle Log #2 on the support between the front and rear burner sliding the log flush to the
back of the support. Center the log from side to side.
3) Next place Front Log #3A behind the front of the andirons (left side), resting on the locator stud,
which is located on the top of the front log(s) Base Plate. Repeat this step with Front Log #3B (right
side). The logs should meet and over lap in the center of the log base.
4) The Right Top Log #4 has (2) two holes provided to insure proper placement. Align the holes in the
log with the pins on the right hand side of the Middle Log #2, place the log gentility on to the pins.
5) To place the Left Top Log #5 use the (2) holes provided and the pins on the left side of the logs and
repeat the steps in #4.
DISCRIPTIONDATE
REV. BY APRVD
J.GLENN
2-2-00 11 GA. C.R.
UPPER HEAT SHIELD
M.BEASTON
N.T.S.
21 1/2" X 9 1/2" 22 PS220012
NEW RELEASE
M.B.DATE
FRONT LOG(S)
BASE PLATE

Page 14
LOG PLACEMENT FOR CR30 LOG SET (SPLIT FRONT LOG) :
WARNING: Failure to position the parts
in accordance with this diagram or failure
to use only parts specifically approved
with this heater may result in property
damage or personal injury.
#3A
#3B
#1
#2
#4 #5

Page 15
CR24 ASPEN LOG SET
(WITH DOUBLE BURNER DX24MV LOG BASE)
WARNING: POSITIONING OF LOGS IS VERY CRITICAL.
LOG PLACEMENT FOR CR24 ASPEN LOG SET:
1) Align the two holes on the bottom of the rear log #1 over rear base legs and slide down to the supports.
2) Place the middle log (#2) on the support between the front and rear burner sliding log flush to the back of
the support. Center from side to side.
3) Next place front log (#3) behind the front of the andirons, resting on top of its legs. Small notch on the
right of the log (#3) should line up with the right andiron support.
4) Left top log (#4) has two holes provided to fit over the pins in the left side of the middle log (#1) and the
left side front log (#2) to ensure proper fit.
5) Right top log (#5) has a hole to fit over the pins on the right side of the rear log (#1) and the right side
middle log (#2) to ensure proper fit.
Completed Log Placement (Front View)
Completed Log Placement (Left Angle View)
4
1
2
3
5

Page 16
GAS PRESSURE CHECK
Check the inlet pressure to the burner to ensure that it is as shown in the table below. NOTE:
The pressure check point is located on right side of valve facing the burner.
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 pressure in excess of 1/2 psi
(3.5 kPa).
The appliance must be isolated from the gas supply piping system by closing its equipment shut-
off valve during any pressure testing of the gas supply piping system at test pressures equal to or
less than 1/2 psi (3.5 kPa).
MODEL 18 (CR, DX) 24 / 30 (CR, DX)
Gas Natural Propane (LP) Natural Propane(LP)
Maximum Heat Input 30,000 30,000 40,000 40,000
Minimum Heat Input 23,000 23,000 29,000 29,000
Gas Inlet Pressure:
Maximum 10.5 ins. W.C. 13.0 ins. W.C. 10.5 ins.W.C. 13.0 ins. W.C.
Minimum 4.5 ins. W.C. 10.5 ins. W.C. 4.5 ins. W.C. 10.5 ins. W.C.
Manifold Pressure 3.5 ins. W.C. 10.0 ins. W.C. 3.5 ins. W.C. 10.0 ins. W.C.
NOTE: On initial installation it may be required to bleed out air in the gas lines. Do this by
holding the control knob and turning the knob to the pilot position for about 30 seconds.
The pressure should be checked with the heater burning and the control set on high. After
measuring the pressure, close pressure tap screw, ensuring there are no leaks. Regulator pressure
check screw located above “OFF/ PILOT/ON” knob at right upper corner of valve.
WARNING: This appliance is equipped for (natural or propane) gas. Field conversion is
not permitted.

Page 17
OPERATING INSTRUCTIONS
Before operating this appliance, proceed through the following checklist.
1. Read and understand these instructions before operating this appliance.
2. Check that there are no gas leaks. If you smell gas do not attempt to light this appliance.
3. Verify that log placement is correct.
LIGHTING INSTRUCTIONS
SIT-MILLIVOLT VALVE
FOR YOUR SAFETY READ BEFORE LIGHTING
WARNING: If you do not follow these instructions exactly, a fire or explosion may result
causing property damage, personal injury, or loss of life.
A. This appliance has a pilot which must be lit by hand. When lighting the pilot follow these
instructions exactly. If piezo fails, then light the pilot using matches. Refer to the match
lighting instructions.
B. 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 to 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.
* 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.
C. Use only your hand to push in or turn the gas 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.
D. Do not use this appliance if any or part of it has been under water. Immediately call a
qualified service technician to inspect the appliance and to replace any part of the control system
and any gas control which has been under water.

Page 18
REMOTE CONTROL OR
WALL THERMOSTAT
NOTE: Knob cannot be turned from “PILOT” to “OFF” unless knob is pushed in slightly. Do not force.
5. Wait (5) five minutes to clear out any gas. Then smell for gas, including near the floor. If
you smell gas, STOP! Follow “B” in the safety information on the reverse side of this label.
If you don’t smell gas, go to the next step.
6. Find Pilot: follow metal tube from gas control. The pilot is located behind the back burner
tube and in front of the rear log. Fully open the manual shutoff valve.
7. Press in and turn knob on gas control counterclockwise to “PILOT” and continue
pressing in the knob for (15) fifteen seconds.
8. With control knob pressed in push down (in) and release the igniter button (igniter button is
located on the left hand side of the front of the appliance). This will light the pilot. If
needed, keep repeating this step until pilot lights.
9. Keep control knob pressed in for (1) one minute after lighting pilot. After (1) minute,
release the control knob and it will pop back up. Pilot should remain lit. If pilot goes out,
repeat steps 1 through 9.
 If the knob does not pop up when released, stop and immediately call your service
technician or gas supplier.
LIGHTING INSTRUCTIONS
1. STOP! Read the safety information on the reverse side of this label (page 17).
2. Make sure manual shutoff valve is fully closed. If equipped with thermostat, set to the
lowest setting.
3. Turn off all electrical power to the appliance.
4. Push in gas control knob slightly and turn clockwise to the full “OFF” position.