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OWNER’S MANUAL                                                                                  MODEL:  8745 TUCSON Vent-Free HEATER

 

 

 

-18- 

 

 
DAILY OPERATION cont.

 

Through trial and error the homeowner can 
select the optimum flame size for their setting 
and application.

 

 

During the summer, non-heating season, switch 
the wall thermostat to “OFF”, and turn off the 
pilot. This will improve the overall efficiency of 
the unit as the heat from the pilot is not wanted 
in the summer.  When putting the unit back into 
service follow the Lighting 

the  Unit  portion in the How To Turn the Unit On & 
Off section of this manual.

 

 

When the unit is first lit, especially when cool, it is 
normal to experience some condensation on the inside 
of the glass window.  This condensation will burn off 
within the first few minutes of operation.  If 
continuous condensation or water drips are noted from 
any part of the unit, immediately discontinue operation 
of the unit and contact qualified service personnel.

 

 

 

 

ROUTINE MAINTENANCE AND CARE

 

Routine Maintenance and Care 

 

The Tucson requires minimal routine maintenance 
and care.  The unit should always be cool and off 
when being cleaned. 
 

WARNING: Do not substitute Materials

For replacement parts, or for information about 
parts or service, contact your local HearthStone 
dealer. 
 

Cleaning

 

The unit should receive regular cleaning on, under, 
and around the stove to prevent the buildup of dust 
and lint.  The exterior surfaces of the unit can be 
cleaned using soap, water, and a soft cloth.  Do not 
use abrasive or chemical cleaners and take care not 
to scratch the stones, or enamel finish (if so 
equipped) when cleaning the unit.  The use of 
chemical or wax based cleaners or polishes is not 
recommended due to the potential for discoloration 
of the stones when the residue of the cleaners or 
polishes is exposed to heat. 
 

Firebox

 

The firebox should receive periodic cleaning to 
prevent the accumulation of dust, lint, and other 
debris.  To clean the firebox, set the thermostat to 
the “OFF” position, and turn off the gas at the gas 
control valve.  When the unit is cool, unfasten the 
front door and carefully remove the decorative 
ceramic fiber log set (after they have cooled), 
taking care not to damage the logs or chip the 
enamel cast iron.  Clean the  firebox, burner  tube,  
pilot assembly, and carefully vacuum the entire 
surface of the log set.  Take care to thoroughly 

vacuum the ports (holes) along the top of the burner 
tubes and the pilot assembly. 
 

Pilot & Burner Flames

 

With the decorative ceramic fiber logs out of the 
firebox, fasten the door shut and momentarily light 
the unit according to lighting instructions described 
in the How To Turn the Unit On & Off section of 
this manual.  Check to ensure a flame is burning 
from each burner port.  The pilot flame should be 
large enough to engulf the thermocouple as shown 
in 

Figure 9

.  NOTE: Do not operate the unit for 

more than 1-2 minutes without the log set in place.  
Turn the unit off by setting the thermostat to “Off”, 
and turning off the gas control valve.  Allow the 
unit to cool. 

 

Check and clean any burner ports which were not 
burning properly or at all.  Clean burner ports using 
a soft brush or vacuum cleaner.  If the pilot  flame 
height needs adjustment it should be adjusted by 
qualified service personnel as described in the 
Initial Adjustments section of this manual. 
 
Complete the cleaning procedure by carefully 
placing the log set within the firebox as described in 
the Log Set Information section of this manual.  
Close and fasten the front door. Turn on the gas, 
light the unit and check for proper operation.  Flame 
patterns should look like

 Figure 8

.  Regularly check 

to insure the area around the Tucson is kept free and 
clear from combustible materials, gasoline, and 
other flammable vapors and liquids.  Check that the 
flow of combustion and ventilation air is not 
obstructed.

  Once a year the unit should be 

inspected by qualified service personnel to 

Summary of Contents for TUCSON 8745

Page 1: ...erformed by a qualified installer service agency or the gas supplier This is an un vented gas fired heater It uses air oxygen from the room in which it is installed Provisions for adequate combustion...

Page 2: ...___ __________________________________ ____ _________________ _______________ __________________________________ ____ _________________ _______________ __________________________________ ____ ________...

Page 3: ...he heat output along with the flame height to suit personal needs Heat output can be reduced during the Fall and Spring when the need for heat is reduced and increased during Winter months when the ne...

Page 4: ...ill be operating The installation must conform with local codes or in the absences of local codes the current National Fuel Gas Code ANSI Z223 1 NFPA 54 DO NOT INSTALL THIS HEATER IN A BEDROOM OR BATH...

Page 5: ...tric spark generator as described in the How To Turn the Unit On Off section of this manual Never attempt to light the pilot or main burners by hand with a match or lighter After repeated attempts if...

Page 6: ...stibles Minimum alcove height 22 above stove top HEARTH REQUIREMENTS FLOOR PROTECTION The Tucson can be installed on wood flooring or a non combustible surface For installation of the Tucson on carpet...

Page 7: ...s to be installed meets the following criteria it is considered to be an unconfined space The room in which the heater is to be installed has an air volume of at least 50 cubic feet cubic feet length...

Page 8: ...f the number from III is smaller than the number calculated in II the space should be considered an unconfined space If the number from III is larger than II the space should be considered a confined...

Page 9: ...d space needs to have two permanent openings one commencing within 12 inches 30 cm of the top and one commencing within 12 inches 30 cm of the bottom of the enclosure The openings shall communicate fr...

Page 10: ...the top three stones and grill Use the protective wrapping material to temporarily protect the stones from chipping or damage while the unit is inspected and installed With the top stones and grill r...

Page 11: ...ly behind or too close to the unit otherwise heat from the unit will immediately satisfy the thermostat and turn the unit off Violet Black Yellow On Off T stat Figure 4 Wiring diagram Thermostat Wirin...

Page 12: ...line should be diameter or appropriately sized to provide a sufficient gas supply to meet the maximum demand of the unit without undue loss of pressure We recommend a flexible line to avoid undue mec...

Page 13: ...use however they will break if subjected to rough or improper handling Broken or cracked logs should be replaced When removing and replacing the log set from the unit during routine cleaning or servic...

Page 14: ...m the firebox The log set assembly will be in four pieces along with the charcoal embers as shown in Figure 6 First remove the Top Log 6 by pulling it up off the Middle Log 2 and out of the firebox Ne...

Page 15: ...o 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 setti...

Page 16: ...en turned to the ON position the main burners are lit by selecting ON of the On Off T stat switch or if T STAT was selected by moving the thermostat to a high setting so that it calls for heat i e tur...

Page 17: ...ly the thermocouple as well 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 loc...

Page 18: ...accumulation of dust lint and other debris To clean the firebox set the thermostat to the OFF position and turn off the gas at the gas control valve When the unit is cool u nfasten the front door and...

Page 19: ...x 6 1741 352 top center stone 8e x 3e 7211 554 rear log 7211 559 middle log 7211 556 front log 7211 557 top log 7211 558 charcoal ember 2 oz 5320 070 ember screen 5710 119 light shield 5710 120 back l...

Page 20: ...TER 20 Natural Gas LP Input rating Btu hr 20 000 20 000 Minimum input rating Btu hr 13 500 16 000 Orifice size DMS 44 55 Man pressure HI setting in w c kPa 3 5 10 0 Man Pressure Lo setting in w c kPa...

Page 21: ...oltage between valve body and solder connection on the rear of the valve where the blue wire connects It should be no less than 7mV C1 Ensure that the thermocouple connection at the gas valve is tight...

Page 22: ...input underrated C Valve leak if flashback occurs with burner valve in off position D Improper gas pipe size A Incorrect air to fuel ratio A1 Primary air incorrect A2 Burner ports plugged B Pilot not...

Page 23: ...d orifices against breakage cracking or burn through Ceramic logs and embers against breakage cracking or burn through This warranty expires on the fifth 5th anniversary of the Purchase Date LIMITED T...

Page 24: ...RRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE SHALL APPLY TO THE SUBJECT STOVE SOME STATES DO NOT ALLOW LIMITATIONS ON HOW LONG AN IMPLIED WARRANTY LASTS SO THE ABOVE LIMITATION MAY...

Page 25: ...ts related to shipping Stove parts to and from HearthStone or a Dealer as the case may be Shipping cost for the Stove Within the first 1st year after the Purchase Date if the Original Purchaser is ins...

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