HearthStone TUCSON User manual

Manufactured by: HearthStone
317 Stafford Avenue
Morrisville, Vermont 05661
OWNER’S MANUAL
With Installation and Operation
Instructions for the
TUCSON
Gas-Fired B-Vent Fireplace Heater
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. Installation and service must be performed by a qualified installer,
service agency, or the gas supplier. Do not store or use gasoline or other
flammable vapors and liquids in the vicinity of this or any other
appliance.
FOR YOUR SAFETY - WHAT TO DO IF YOU SMELL GAS
* Do not try to light the appliance.
* Do not touch any electrical switch; do not use the 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.

1 Introduction
6400-40433 12/01
Welcome
Congratulations on your purchase of your
HearthStone Tucsongas-firedB-vent heater.The
Tucson incorporates the latest in energy efficient
gas technologywhichwill provide youwithclean,
efficient heat for years to come. The combination
of natural stones with cast iron gives the Tucson
apleasing look which can be maintained with
minimum care.
Ifthere are any questions regarding installationor
operation which are not answered within this
manual, contact your localdealer or your building
inspector.
Your Tucson is equipped with a standing pilot
which: 1) generates a millivolt signal that powers
the wall-mounted thermostat and 2) lights the
main burner when the thermostat calls for heat.
Your Tucson requires no external power source
for normal operation (unless equipped with the
optional blower fan kit ).
This unit is equipped with avariable output
controllocated onthe gas controlvalve. It allows
you to vary the heat output, along with the flame
height, to suit personalneeds. Heat output canbe
reduced during the Fall and Spring (when the
need for heat is reduced) and increased during
Winter months (when the need for heat is the
greatest). Regardless of howyouset the variable
output control, the on/off cycling of the unit is
always controlled by the wall-mounted
thermostat.
This unit can be equipped with an optional
variable speed blower fan . The speed control is
located onthe front ofthe stove at the lower right
side behind the door. This allows you to turn the
fans onor off and control the speed ofthe fans to
suit your needs. Regardless ofthe speed at which
the fan is set, the fan will automatically come on
when the unit heats up and shuts off once the unit
has cooled down.
Your Tucson will provide you with years of
practical and convenient service. However, as
withany gas appliance, the unit must be properly
and safely installed and maintain by qualified
service personnelto ensuresafe and trouble free-
operation.
Table of Contents
Introduction..................................................1
Safety Information........................................2
Assembly.......................................................4
Clearance to Combustibles...........................5
Electrical Connections..................................7
Venting/Chimney requirements....................8
Gas Connections..........................................10
Log Set Placement......................................11
Lighting the Stove.......................................13
Initial Adjustments.....................................16
Maintenance................................................18
High Altitude..............................................20
Specifications..............................................21
Trouble Shooting.........................................23
Warranty.....................................................24

Safety Information 2
READ THIS OWNER’S MANUAL
Operate and maintainthis gas heater according to
instructions in this manual. Read this manual in its
entirety.
HEATER MUST BE INSTALLED AND
MAINTAINEDBYQUALIFIEDSERVICE
PERSONNEL
Failure to properly install, adjust and maintain this
gas appliance may result in an unsafe or
hazardous condition which may lead to carbon
monoxide poisoning, fire, explosion, personal
injury and loss of life. The gas heater must be
inspected before use and at least annually by
qualified service personnel. More frequent
cleaning maybe requireddue toexcesivelint
from carpeting, bedding material, etc. It is
imperative that control compartments,
burners, and circulating air passageways of
the appliance be kept clean.
DO NOT OPERATE HEATER IF ANY
PART HAS BEEN UNDER WATER
Immediately call qualified service personnel to
inspect the appliance and to replace any part of
the control systemand any gas controlwhich has
been under water.
Note! The Tucsonrequires anadequate supply
ofair to provide ventilationaround the unit and to
support combustion. Most buildings have
sufficient air infiltration to satisfy these
requirements.
However, extremely air-tight structures may
require the introduction of supplemental air from
the outside to allow for proper operation of the
unit !HAZARD!
This gas appliance must be connected to a
properly installed and maintained venting system
(chimney). This appliance is equipped with a
down draft sensor switch (vent spill switch).
Tampering, modifying, disconnecting or
overriding the vent safety shutoff system may
result in an unsafe or hazardous condition witch
maylead to carbon monoxide poisoning and loss
of life.
!HOT SURFACES!
Certain exposed surfaces of the Tucson will
reachhigh temperatures during normaloperation.
Do not place objects that may obstruct air
circulation on, under or near the heater.
Clearances to combustibles must be maintained
as specified elsewhere in this manual. The Tucson
should be located out of traffic and away from
furniture, draperies, clothing and flammable
material. Clean the area around, under and
behind the unit on a regular basis to prevent the
accumulationofdust and lint. Childrenand adults
who are unfamiliar with heaters of this type
should be alerted to the hazards of high surface
temperatures and warned that they should stay
away to avoid burns to skin and clothing.
Children should be carefully supervised when in
the same area as the Tucsonheater. Do not leave
children unattended in the vicinity of this unit.
!FIRE HAZARD!
Do not store or use gasoline or other flammable
vapors and liquids in the vicinityofthis appliance.
The Tucson should be located out of traffic and
away from furniture, draperies, clothing and
flammable material.
!ELECTRICAL HAZARD!
When the optional blower kit is installed, the
Tucson must be electrically grounded in
accordancewithlocalcodes, or in the absence of
local codes, with the National Electrical Code,
ANSI/NFPA 70 in the U.S. or CSA C22.1
Canadian Electrical Code in Canada.
The Tucson fan accessory is equipped with two
blower fans. The three-prong grounded plug
must be plugged directly into a properly
grounded three-prong receptacle. Do not cut or
remove the grounding prong from the plug or
otherwise attempt to circumvent thegrounding

3 Safety Information
protection provided with the unit.
DO NOT LIGHT PILOT OR MAIN
BURNERS BY HAND
The standing pilot light equipped with this gas
heater is lit by using apiezoelectric spark
generator as described onpage 15 in this manual.
Never attempt to light the pilot or main burners
by hand with a matchor lighter. If, after repeated
attempts, the pilot light fails to light, discontinue
operation, turnoff the gas at the gas controlvalve
and immediately contact qualified service
personnel for assistance.
WARNING:
This gas appliance must not be connected to a
chimneyflue serving a separate solid-fuelburning
appliance.
CERAMIC FIBER LOG SAFETY
INFORMATION
If the decorative ceramic logs and ember strip
material supplied with the Tucson are damaged
or missing, they must be replaced with the same,
approved replacements supplied by the
manufacturer. Do not replace fiber ceramic logs
or ember strip with unapproved ceramic logs or
any other material.
SERVICE CAUTION
Any shield, door, safety screen component
removed for servicing will be replaced prior to
operating. If you believe your Tucson is not
performing properly in any way what so ever,
immediately discontinue operation until the unit
has been inspected and approved for continued
operationbyqualified service personnel. Always
shut off gas and electricity to the stove while
servicing. Make sure the unit is completely turned
off. Make sure the unit is not hot when servicing
or cleaning. Use ofany components not supplied
by HearthStone on the stove or vent system
voids all warranties. Do not substitute
components.
NEVER BURN PAPER, WOOD OR
OTHER MATERIALS
This gas heater is designed to burn either natural
gas or liquid propane (LP). Never burn any fuel
which was not intended for use.
MUST BE VENTED TO THE OUTSIDE
Never vent the gas heater to other rooms or
buildings. Do not burn the gas heater with the
viewing door open. Do not burn gas heater with
broken glass. Only open front door for routine
service. Do not slam door or strike glass.

WHAT TO DO IF YOU SMELL GAS
* DO NOT ATTEMPT TO LIGHT THIS GAS HEATER OR ANY APPLIANCE
* EXTINGUISH ANY OPEN FLAME
* DO NOT TOUCH ANY ELECTRICAL SWITCH
* DO NOT PLUG IN OR UNPLUG ANY APPLIANCE
* DO NOT USE ANY PHONE IN YOUR BUILDING
* OPEN WINDOWS IN THE ROOM AND VACATE THE BUILDING
* TURN OFF THE MAIN GAS SUPPLY
* IMMEDIATELY CALL YOUR GAS SUPPLIER FROM A NEIGHBOR’S PHONE
* IF YOU CANNOT REACH YOUR GAS SUPPLIER, CALL THE FIRE

Assembly 4
UNPACKING AND INSPECTION
Packing List
1 - Tucson Gas-fired Heater
4 - Decorative Ceramic Fiber Logs
1 - Ember Screen
1 - Thermostat with 40' Thermostat Wire
1 - Owner’s Manual
1 - Warranty Validation Form
1 - Bag Charcoal Embers (2oz)
Unpack and Inspect For Damage
The Tucson is packaged by the manufacturer to
withstand shipment without damage under most
circumstances. However, damage can occur
during transit and handling, so take care to
inspect for damage when unpacking and
installing the unit. If any damage or missing
parts are detected, immediately contact your
dealer. Do not install or put into service a
damaged or incomplete heater.
Prior to removing the shipping carton, inspect
the carton for visible signs of damage. Carefully
remove the shipping carton. Caution: The two
top stones and grill are NOT cemented or
otherwise permanently fastened in place!
Carefully remove and set aside the two stones
and grill. Use the protective wrapping material
to temporarily protect the stones from chipping
and damage while the unit is inspected and
installed.
Inspect the Tucson for visible or concealed
damage. The unit should appear to be square
and true. The stones should be whole and
without cracks, chips or breakage. The sheet
metal parts should be smooth and free of bends
or dents. The enameled cast iron should be free
of chips or cracks. If visible or concealed
damage is found or suspected, contact your
dealer for instructions.
With the top stones and grill removed and set
aside, undo the lag bolts which fasten the unit to
the pallet. Take care not to mar or chip the
enameled legs (if stove is enameled). Lift the
stove off the pallet and set it into place.
The decorative ceramic fiber logs supplied with
the Tucson are contained within the firebox.
Always use great care when handling the
decorative ceramic fire logs as they are fragile
and subject to damage and breakage if handled
roughly. Open the firebox door using a Phillips
head screw drive and inspect the logs for
breakage. If a broken log is encountered,
contact your dealer for replacement logs.
Otherwise, set the logs aside until called for in
the installation procedure.
ITEMS REQUIRED FOR
INSTALLATION
Ensure that the following items are available
before proceeding with installation:
* External regulator (for propane/L.P.G.
only)
* Piping which complies with local codes
* Pipe sealant approved for use with
propane/L.P.G. (resistant to sulfur
compounds)
* Manual shutoff valve
* Sediment trap

5 Clearance to Combustibles
* Tee joint
* Pipe wrench
* Phillips head screwdriver
* Other parts as required by local code
*Safety Glasses
*Gloves
Clearances To Combustibles
Due to high surface temperatures, the Tucson
should be located out of traffic and away from
furniture and draperies. Clothing and other
flammable material should not be placed on or
near the Tucson heater.
Always maintain adequate clearances around the
air openings into the combustion chamber and
allow for adequate ventilation. Minimum
clearances tocombustiblesmustbe maintained as
shown in the illustrations onpage 6. Note that the
rearclearanceto combustibles will bedetermined
by either the unit’s or vent pipe’s minimum
clearance, depending on whether the installation
calls for vertical rise within the room or a rear
exit, through-the-wall vent pipe.
Hearth Requirements / Floor
Protection The Tucson can be installed on a
non-combustible surface or wood floor. For
installation of the Tucson on carpeting, vinyl tile
or other combustible material other than wood
flooring, the unit shall be installed on ametal,
wood panel or other non-combustible hearth.
The required size of the hearth is the same as the
outline of the stove.
*NOTE: These clearances are based on
independent laboratory testing to ANSI and
CSA standards. They represent minimum
distances in all cases to prevent fire or
spontaneouscombustion. The combustible
materials exposed to heat by this product are not
controlled by us, therefore, an assessment of the
effect of heat on the surroundings must be made
by the installer to prevent consequential damage
of walls or flooring.
CODES
Adhere to all local codes or, in their absence, the current edition of THE NATIONAL FUEL GAS
CODE ANSI Z223.1 or NFPA54 or CAN1-B149-GAS APPLIANCE INSTALLATION CODE
can be obtained from:
AMERICAN NATIONAL STANDARDS INSTITUTE, INC.
1430 BROADWAY
NEW YORK, NY 10018
OR
NATIONAL FIRE PROTECTION ASSOCIATION, INC.
BATTERY MARCH PARK

Figure 1: Corner Clearance To Combustibles Figure 3: Minimum Wall Clearance Horizontal or
Figure 4: Vertical Exit Clearance To Combustibles
Figure 2: Stove Pipe & Stove Top Clearance To
QUINCY, MA 02269
Clearance to Combustibles 6

7 Electrical Connections
ELECTRICAL CONNECTIONS
Thermostat
The Tucsonrequires a wall mounted thermostat for
operation. The thermostat controls the unit by
“calling for heat” and turning on the unit when the
room is cold, and turning off the unit once the room
is warmed sufficiently. The Tucson thermostat is
controlled by a750 millivolt DC two-wire circuit.
Both the thermostat and 40' (6m) of thermostat
wire are included as standard equipment.
Thermostat Placement
The thermostat should be placed in the same room
or living space as the Tucson, typically 5' (1.5 m)
off the floor and away from influences that would
cause the temperature in the vicinity of the
thermostat to be unrepresentative of the room
temperature in general. Such influences might
include strong lighting, a heater vent from the
central heating system, a nearby drafty window,
etc.
Placement ofthe thermostat onaninside wall rather
than an outside wall is preferable. Do not place the
thermostat directly behind or too close to the
Tucson, otherwise heat from the unit will
immediately satisfy the thermostat and turn the unit
off.
NOTE: OPEN VALVE DOOR UNDER
ASH LIP FOR ELECTRICAL AND GAS
CONNECTIONS.
Thermostat Wiring
The thermostat should be connected to the
Tucson using no more than 40' (6 m) of the
provided insulated thermostat wire. The
thermostat wire from the Tucson to the
thermostat can be surface mounted or routed
under the floor, through walls, etc.
If 40' (6 m) of wire is not enough, 16 gauge wire
maybe used in its place but must not exceed 40'
(12 m) in length. In either case, be sure to leave
asmall coil of wire behind the Tucson so that the
unit can be moved out of position for servicing
and cleaning.
Connect the two thermostat wires to the gas
control valve on the top and bottom screws
marked THand TP, TH. When making these
connections, position the thermostat wire so that
it extends towards the wall behind the Tucson,
then towards the thermostat.
At the thermostat, the wires should be connected
to the two connection screws on the back of the
thermostat per the instructions received with the
thermostat. Take care notto over-tighten the
connectionscrews and not to damage the internal
parts of the thermostat.
Label all wires prior to disconnection when
servicing controls. Wiring errors can cause
improper and dangerous operation. Verify
proper operation after servicing.

Figure 5 Electrical Schematic

Venting/Chimney Requirements 8
Normally Aspirating Chimneys
The Tucson is a highly efficient gas heater. With
operating efficiency as high as 82%, most heat
output is retained within the living space, with
minimal heat leaving the room via the chimney.
However , some heat is required in all chimneys in
order to establishand maintain adraft. Since most
of the heat is retained in the living space with
minimal heat entering the chimney, it is imperative
that the chimney/venting systembe properly sized
and installed in order to establish and maintain the
draft required for the unit to function.
The Tucson must be properly connected to a4"
(102 mm) diameter type B-1 vent which is
constructed and installed in accordance with
NFPA54 and NFPA211. Single wall vent pipe
maybe used within the same room as the Tucson
so long as adequate (6" or 152 mm) clearance is
maintained from the single wall pipe to
combustible surfaces. The single wall vent pipe
must connect to double-wall type B-1 vent from
thereon. The minimum clearance from type B-1
vent to combustibles is 1"(25 mm).
Connect the single wall or B-1 vent pipe to the
flue collar located on the rear surface of the unit
using 3 sheet metal screws. For wall, roof or
partitionpenetration, refer to the current edition of
ANSI Z223.1 or CAN1-B149 for instructions
and clearances to combustibles. The Tucson can
be connected to an existing, properly constructed
masonry or prefabricated chimney so long as the
type B-1vent is extended through the entire length
ofthe chimney. An annualinspectionis required to
confirmthat the vent is unobstructed. The vent can
not be connected with a flue serving a solid fuel
appliance. It however, can be installed to a flue
serving another gas or oil appliance, so long as it
is in accordancewiththe NationalFuelGas Code.
Type B-1 vent pipe is intended primarily for
installation inside buildings to provide an
essentially
vertical passageway for flue gases from the
vented gas appliance to the outside air. When it
is impractical to install B-1 vent pipe inside a
building, it may be installed outdoors provided
that it is: 1) certified for outside installation, 2)
installed in accordance with manufacturer’s
installationinstructions and 3) adequatelychased
(enclosed) and insulated (per Venting Tables,
Category I-Central Furnaces, AGA and
GAMA current edition; Standards for Gas
Vents, National Standards of Canada and
CAN/CGA-B149.1-M91). Exterior B-1 vent
pipe passing through an unused masonry
chimney flue is not considered to be exposed to
the outdoors.
Four inch flexible pipe can be used in place of
B-1 vent pipe wherever it is impractical or
impossible to install rigid Type B-1 vent pipe.
However, flexible pipe is less desirable thanB-1
vent pipe, because there is agreater heat loss
along the length of flexpipe whichmayproduce
an unacceptable draft.
Draft Hood/Down Draft Sensor/Spill
Switch
The Tucson has a draft hood as part of its rear
assembly. The draft hood must not be altered
or obstructed. The Tucsonmust be installed so
that the draft hood is in the same atmospheric
pressure zone as the combustible air inlet for the
unit. The Tucson cannot and must not be
connected to anoutside air source; the unit must
take its combustion air from the living space in
which it is installed.

9 Venting/Chimney Requirements
The draft hood is equipped with asafety shutoff
down draft sensor switch (spillswitch) which is
located in the draft hood just beneath the flue
collar on the rear of the unit. This switch is
designed to sense aloss of draft within the
chimney. The down draft sensor switch is wired
in series with the pilot thermocouple and is
typically in the closed position.
Should the Tucson fail to establish or lose draft
while in operation, hot exhaust gasses will spill into
the room through the bottom of the draft hood
instead of exiting the draft hood via the flue collar
and ventingtothe outdoors. Whenthis undesirable
down draft conditionoccurs the hot gasses spilling
out of the draft hood will heat the spill switch
causing it to open which turns the unit off.
Do not modify, disconnect or otherwise defeat the
purpose of the down draft sensor switch. If your
stove shuts off during normal operation, it is
indicative of an unsafe venting condition which
must be corrected. Operation of this unit when
not properly connected to a properly installed and
maintained venting system or tampering with the
vent safety shutoff system can result in carbon
monoxide (CO) poisoning and possible death.
Power Venting
For applications where it is impractical or
impossible to exit B-1 vent pipe to above the
existing roof line, the Tucson can be vented
using a power vent. A power vent is
essentially
a specialized electric fan mounted on the outer
wall of the building which is connected to the
heater via the flue pipe. When the thermostat
calls for heat, the power vent turns on and
creates a draft in the flue pipe similar to the
draft
created by a properly functioning conventional
chimney. The Tucson operates in a normal
fashion, satisfied by the simulated draft. A
series of interlocking safety devices prevents
operation of the heater unless the power vent
is operating properly. Both the Tucson and
the power vent are controlled by the wall
thermostat and neither will operate if there is a
power failure. For installations requiring
power venting, use only an AGA (U.S.) Or
CGA (CANADA) listed unit. The power vent
supplier will in turn supply the power vent
installations.

Figure
6: Gas
Contr
ol
Valve
Gas Connections 10
GAS SUPPLY
Gas Connections
The gas supply lineconnection is made to the
Tucson’s gas control valve just inside the left
front leg ofthe unit using a 3/8" male NPT fitting.
The supply line should be 1/2" diameter or
appropriately sized to provide asufficient gas
supply to meet the maximum demand of the unit
without undue loss of pressure. We recommend
a flexible line to avoid undue mechanicalload on
the valve and to ease thread alignment, but refer
to local codes.
The unit must be installed and connected in
accordance withlocalcodes, or in the absence of
local codes, with the most current edition of the
National Fuel GasCode ANSI Z223.1/NFPA
54 or CAN1-B149. The supply line must include
a manual shut-off valve and unionso that the unit
can be disconnected for servicing. The gas
control valve has built in pressure taps for test
gauge connections.
Gas Pressure Adjustment
Once connected tothe gas supply, the supply line
and manifold gas pressures must be tested. The
supply line pressure is tested, to ensure it
meets the minimum gas supply pressure as listed
in the Specifications for the type of fuel in use (
naturalgas or LP), byconnecting amanometer to
the supply line and adjusting the incoming
pressure if necessary to meet the required supply
line pressure as listed in specifications. The
manifold pressure is tested by connecting the
manometer to the manifold pressure tap on the
gas control valve, refer to fig. 6 for location.
Gas Supply
This appliance and its individual shutoff valve
must be disconnected fromthe gas supply piping
system during any pressure testing of that system
at test pressures in excess of ½ psig. The Tucson
must be isolated from the gas supply piping
system by closing its individual manual shutoff
valve during any pressure testing of the gas
supply piping systemat test pressures equalto or
greater than ½ psig.
NOTE: If optional bloweris to be installed
now or in the future, make sure the gas line
is installed close to the floor as possible.
Refer to fig. 17 for proper location and
height for gas line.

Figure 8 Log Set Placement
Figure 7 Log Set Assembly
11 Log Set Placement
Log
Place
ment
Within
The
Unit
Only the
decorati
ve
ceramic
fiber log
set
supplied
with the
unit
should
be
placed in
the
firebox.
Do not
place
other
ceramic
logs, real wood logs or other material in the
firebox. If the log set is damaged or broken
contact your dealer for replacement.
If the logset does not set into the firebox exactly
as outlined below, contact your dealer for
assistance. Exact positioning of the log set is
required in order to obtain a pleasing flame
pattern and efficient combustion. Incorrect log
placement may cause carbon build-up, excess
thermal stress on the log set and stove parts,
reduced efficiency, and high levels of carbon
monoxide.
The decorative ceramic fiber logset will give long
service when in use; however, they will break if
subjectedtoroughor improper handling. Broken
or cracked logs should be replaced. When
removing and replacing the log set from the unit
during routine cleaning or service of the unit, take
care not to damage the logs and to position the
log set per instructionsabove. Also, take care
not to chip the enamel on the door and door
frame when removing and replacing the log set.
Installation of Log Set
Refer to figures 7 & 8 for log set assembly
.
1) Open the front door using aPhillips screw
driver. Loosen the bolt that fastens the door
frame to the firebox by turning it
counterclockwise. Be careful not to chip enamel
when loosening the bolt. Pull the door open by
grabbing the top edge of the door frame.
2) Remove the packaging materialaround the log
set assembly. Be careful not to damage the log
set when unpacking.

Log Set Placement 12
3) Gently place the Rear Log(1) in the firebox
against the center of the back wall.
4) Gently place the Middle Log(2) in the fire box
against the front ofthe Rear Log. There are slots
on the underside that fit in between the burner
tube and into the burner tube holder. The rear
tabs on the Middle Logshould touchthe front of
the Rear Log, and the log should be centered as
best as possible.
5) Place the Ember Screen(3) onthe front burner
tube with the long side ofthe Screen to the front,
and the tabs should be facing down.
6) Gently place the Front Log(4) in the firebox
against the front of the burner tube. Center as
best as possible.
7) Spread evenly across the Ember Screen, the
2 ounces of Charcoal Embers(5).
8) Gently place the Top Log(6) in the fireboxon
top of the Middle Log. The Middle log has 2
posts which slide into the 2 holes on the
underside of the Top Log. The “leg” on the Top
Log points towards the front.
9) With a Phillips head screwdriver, use the bolt
to fasten the door to the firebox. Make sure the
door is properly secured to the firebox before
turning the unit on. Be careful not to chip the
enamel when fastening the door.
Removal of Log Set
CAUTION: Log set and charcoal embers
retain heat and can be very hot! Allow 2 to 3
hours after pilot light is turned off before
handling.
CAUTION: Fragile! Handle log set and
charcoal embers with care.
Open door using the Phillips screw driver.
Loosen the screw that secures the door to the
firebox by turning it counterclockwise. Pull the
door open by grabbing the top edge of door
frame. Take care not to chip the enamel or to
damage the log set when removing the log set
from the firebox. The log set assembly will be in
four pieces along with the charcoal embers as
shown in fig.18. First, remove the Top Log(6)
by pulling it up off the Middle Log(2) and out of
the firebox. Next remove the charcoal embers.
Then lift upwards and pull the Front Log(4) out
of the firebox. Next remove the ember
screen(3) from the burner tube. Grip the
Middle Log(2) and lift upward, off the burner
tube holder, and out of the firebox. The Rear
Log(1) can then be removed from the firebox.
Place the logs and charcoal embers in a safe
area where they will not be damaged.
Log Set Placement 12

Log Set Placement 12
13 Lighting The Stove
Lighting the Unit for the First Time
Initial Adjustments
Once the Tucson has been set in place and
connected as described previously, the unit is
ready to be lit for the first time. Each Tucson is
tested prior to shipment by the manufacturer, so
ignition should take place without failure.
However, anumber ofsmall adjustments may be
necessary to compensate for variations in gas
pressure, altitude and other factors particular to
each installation.
Lighting the Tucson for the first time and
adjustments tothe unitshould be performed
by qualified service personnel.
WARNINGS PRIOR TO FIRST
LIGHTING OF UNIT
Smoke and Fumes Warning
When lit for the first time, the Tucson will emit
some smoke and fumes. This is normal “off-
gassing” of the paints and oils used in the
manufacturing and assembly of the unit. Open
windows to vent the room if necessary. The off-
gassing and fumes will subside after the first 10 to
20 minutes of operation.
Break-In Warning
The natural stones used in the assembly of the
Tucson were polished using awater-based
polishing system prior to assembly of the unit.
Any residue moisture in the stones must be dried
out slowly to avoid damaging the stones. This is
accomplished byadheringtothe following break-
in procedure.
When lit the first time, the Tucson should be
burned for no more than 15 minutes, then
allowed to cool for 1 to 2 hours. This gentle
warming and cooling of the unit will allow any
residue moisture in the stones to evaporate
slowly. Once this break-in procedure has been
completed, the Tucsoncanbe burned at will with
no time restrictions on length of burn.
Pilot Light Warning
The Tucson has a piezoelectric spark ignitor (the
red push button located next to the gas control
valve behind the valve access door) whichignites
the pilot light bymeans ofa spark at the pilot light
assembly. Do not attempt to light the unit witha
match or by any means other than the
piezoelectric spark.
INSTRUCTIONS PRIOR TO FIRST
LIGHTING OF UNIT
WARNING: If you do not follow these
instructions exactly, a fire or explosion may
result causing property damage, personal injury
or loss of life.
BEFORE LIGHTING,smell all around the
appliance area for gas. Be sure to smell next to
the floor because some gases are heavier thanair
and will settle on the floor. If you smell gas,
immediately follow the What To Do If You
Smell Gas Warning on page 14.
Use only your hand to turn the gas controlknob.
Never use tools. If the knob will not push in or
turnbyhand, don’t try to repair it; call aqualified
service technician. Any use offorce or attempt to
repair may result in fire or explosion.

Lighting the Stove 14
WARNING:THEGAS CONTROLHAS AN
INTERLOCK DEVICE. AFTER SHUTTING
OFF ALL GAS FLOW, THE PILOT
BURNER CANNOT BE RELIT UNTIL THE
THERMOCOUPLE HAS COOLED,
ALLOWING THE ELECTROMAGNET TO
BE RELEASED (APPX. 60 SEC.) . THE GAS
CONTROL KNOB IS DESIGNED TO BE
OPERATED BY HAND. DO NOTUSEANY
TOOLS DURING THIS OPERATION.
DAMAGED KNOBS MAY RESULT IN
SERIOUS INJURY.
Prepare for the lighting procedure by adjusting
the thermostat to its lowest setting or OFF
position. If the gas control knob is not in the
OFF position, turn the knob fully clockwise to
OFF. Locate the variable output and turn it fully
clockwise to the highest setting.
WHAT TO DO IF YOU SMELL GAS!
CDO NOT ATTEMPT TO LIGHT THIS GAS HEATER OR ANY APPLIANCE
CEXTINGUISH ANY OPEN FLAME
CDO NOT TOUCH ANY ELECTRICAL SWITCH
CDO NOT PLUG IN OR UNPLUG ANY APPLIANCE
CDO NOT USE ANY PHONE IN YOUR BUILDING
COPEN WINDOWS IN THE ROOM AND VACATE THE BUILDING
CTURN OFF THE MAIN GAS SUPPLY
CIMMEDIATELY CALL YOUR GAS SUPPLIER FROM A NEIGHBOR’S PHONE
CIF YOU CANNOT REACH YOUR GAS SUPPLIER, CALL THE FIRE DEPARTMENT

15 Lighting the Stove
LIGHTING INSTRUCTIONS
1. STOP! Read the What To Do If You
Smell Gas! warning.
2. Set the thermostat to off position.
3. Unplug the fan accessory, if so
equipped.
4. Push in and turn gas control knob
clockwise to “OFF”.
5. Wait (5) five minutes to clear out any
gas. If you then smell gas, STOP! Smell
all around the appliance area for gas.
Be sure to smell next to the floor
because some gases are heavier than air
and will settle on the floor. If you smell
gas immediately follow the What To Do
If You Smell Gas! warning. If you do not
smell gas, go to the next step.
6. Turn knob on gas control
counterclockwise to “PILOT”.
7. Push in control knob all the way and
hold in. Immediately light the pilot with the
gas lighter (push in and “click” the red
piezoelectric spark ignitor button several
times until lit). Continue to hold the control
knob in for about 20 seconds after the pilot
is lit. Release the knob and it will pop
back out. Pilot should remain lit. If the
pilot goes out, repeat the operation.
* If knob does not pop out when released,
stop and immediately call aqualified
service technician or gas supplier.
* If the pilot will not stay lit after several
tries, turn the gas control knob “OFF”
and call aqualified service technicianor gas
supplier.
8. Turn the gas control knob
counterclockwise to “ON”.
9. Shut the gas control valve access door.
10. Plug in the fan accessory, if so equipped.
11. Set thermostat to “ON” and set the
desired temperature setting.
To Turn Off Gas To Appliance
1. Set thermostat to “OFF” position
2. Turn off all electric power to the
appliance if service is to be performed.
Unplug accessory fan (if equipped).
3. If shutting the off unit for the non-heating
season, turn the gas control knob fully
clockwise to “OFF” position. Do not
force the knob to turn.
NOTE: When pressing/clicking the red
piezoelectric spark ignitionbuttonto light the pilot
, watch through the glass front door of the unit.
Click the red ignitor button until a flame is visible
at the pilot. Once the pilot is lit, continue to press
on the gas control knob for another 20 seconds,
then release. Ascertain that the pilot is still lit by
looking through the front door. If lit, then turn the
gas control knob fully counterclockwise to the
“ON” position. If the pilot fails to light or if it
went out due to apremature release of the gas
control knob while pressed in the “PILOT”
position, wait 60seconds forinterlock to release,
then repeat the lighting process as described
above.
Lighting the Tucson
Once the pilot has been lit, and the gas control
knob turned to the “ON” position, the main
burners are lit by moving the thermostat to a high
setting so that it “calls” for heat (i.e. turns the unit
on). The main burners should light immediately.
Note that the on/off cycling of the main burners
are controlled by the thermostat, but the pilot

remains lit regardless of the thermostat setting.
To turn the pilot off, turn the gas control valve
fully clockwise to the “OFF” position. Once the
unit is lit, observe the flame patternand adjust as
necessary.
Initial Adjustments 16
INITIAL ADJUSTMENTS
Variable Output Control
The gas controlvalve is equipped with a variable
output control. This control varies the rate of
heat produced by the unit by varying the gas
pressure to the main burner tube. The length of
the burn cycle is affected by acombination of
heat output and the thermostat setting. If your
stove cycles on and off often, try increasing the
burn cycle with the gas control valve first.
Using the variable output control, the heat output
of the unit canbe reduced for mild fall and spring
months or maximized for the colder winter
months. This adjustment can be made by the
homeowner as necessary by turning the variable
output controlknob to “HI” or “LO” or any
setting in between.
Air Shutter
The air shutter is preset by the manufacturer for
optimum operation and should not need
adjustment by the owner. There is an adjustable
air shutter located on the U-burner tube on the
right rear of the unit under the air deflector. The
air shutter is used to regulate the air-to-gas
combustion mixturewhich in turn influences the
size and color of the flames. However, it may
need adjustment once the unit has been installed
to compensate for variations in supply line
pressure, restriction plate position, altitude and
other variables.
To determine if the air shutter needs adjustment,
it is necessary to view the flame pattern with the
variable output controlknob at its highest setting.
Allowthe unit to operate for 10 minutes to allow
the entire unit to reach temperature and for the
flame patternto stabilize. Generally, the more air
(open shutter) in the mixture, the bluer the flame.
Less air (closed shutter) results in a more
yellow flame, but too little air will result in
incomplete combustion, lowefficiencyand adirty
burn. There are two simple guidelines to aid in
determining the correct flame pattern:
1) if the flame at the base of the logs is
completely blue, the air shutter may be open too
far; 2) if the flame is dirty or licks the top of the
stove, the air shutter may be closed too far.
Air Shutter Adjustments
Followthe log set removal procedure. Once the
log set is removed, pull the burner tubeup and
towards the front of the fire box. The air shutter
is factory set. ONLY A QUALIFIED GAS
TECHNICIAN SHOULD ADJUST THE AIR
SHUTTER. The air shutter has one screw
holding it in place as shown in fig. 13. By
loosening this screw, the shutter will rotate
around the burner tube. Set the air shutter at the
desired position and tighten the screw.
Reposition the burner tube back into the burner
tube holder. Make sure the hole in the end of the
air shutter is placed around the injector in the
back corner of the firebox. Refer to fig. 8 on
page 11 for proper positioning ofthe burnertube.
Followthe logset procedure for placement ofthe
logset and ember strip. Securely fastenthe door
to the firebox using the bolt provided.

Figure 13 Air Shutter Position
17 Initial Adjustments
Air Shutter Adjustment Continued
If the flame pattern continues to indicate a low
flame or over-fire condition regardless of air
shutter setting, then it is likely that the gas supply
pressure to the unit is too low or too great. Such
a condition cannot be corrected through air
shutter adjustment; an adjustment must be made
to the gas supply pressure. Supply line, manifold
gas pressure adjustments must be preformed by
qualified service personnel. Do not attempt to
complete any partofthe installationor adjustment
of this unit unless technically qualified to do so.
Pilot Adjustment
The pilot light is preset by the manufacturer and
should not need adjustment. The pilot light flame
should be large enough to engulf the thermopile
and thermocouple located next to the pilot, but
not so large as to create excessive noise or
consume excessive gas. However, it can be
adjusted by means of the pilot light adjustment
screw located onthe gas control valve. Openthe
valve door to access the pilot adjustment screw
(see fig. 6).
Note that the pilot flame must engulf the
thermopile so that the thermopile can generate
sufficient millivolt single (325 to 750mv) topower
the millivolt gas control valve. The flame on the
pilot should look like fig. 15 on page 18.
Controlling the Tucson by the wall mounted
thermostat may become erratic, nonexistent, or
the unit may go out, if the pilot light flame is too
small or misdirected away from the thermopile.
DAILY OPERATION
The Tucsongas-fired heater is easily operated by
the homeowner once installed and adjusted by
qualified service personnel. The unit is controlled
via the wall-mounted thermostat during the
heating season. Set the thermostat to the desired
room temperature and the unit will cycle on and
off as required. By adjusting the variable output
control located on the gas control valve, the rate
of heat output can be varied to meet the heating