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

 

 

 

 

 

 

 

 

INTRODUCTION 

Welcome

 

Congratulations on the purchase of your 
HearthStone Tucson Gas-Fired Vent-Free Stove.  
The Tucson incorporates the latest in energy and 
gas technology, which will provide you with 
clean, efficient heat for years to come.  The 
combination of natural stone and cast iron gives 
the Tucson years of attractive looks and allows 
for durable performance, which can be 
maintained with minimal care. 
 
If there are any questions regarding installation or 
operation, which are not answered within this 
manual, contact your local dealer 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.  (The Tucson requires no electrical 
power source for normal operation). 
 
This unit is equipped with a variable output 
control located on the gas control valve.  It allows 
you to vary the 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 need for heat is the 
greatest).  Regardless of how you set the variable 
output control, the on/off cycling of the unit may 
be controlled by the wall-mounted thermostat, or 
the on/off/Tstat switch. 

 
The Tucson will provide you with years of 
practical and convenient service.  However, as 
with any gas appliance, the unit must be properly 
installed and maintained by qualified service 
personnel to ensure safe and trouble -free 
operation. 

 
 
Table of Contents 

READ THIS OWNER’S MANUAL ............1 
SERVICE RECORD.....................................2 
SAFETY INFORMATION...........................4 
CLEARANCES TO COMBUSTIBLES .......6 
FRESH AIR REQUIREMENTS ...................7 
DETERMINING SPACE 
CLASSIFICATION ......................................7 
ELECTRICAL CONNECTIONS ...............11 
GAS SUPPLY & CONNECTIONS............12 
LOG SET INFORMATION........................13 
BEFORE THE STOVE IS LIT ...................14 
HOW TO TURN THE UNIT ON & OFF...15 
BURNER FLAME APPEARANCE...........16 
INITIAL ADJUSTMENTS .........................17 
DAILY OPERATION.................................17 
ROUTINE MAINTENANCE AND CARE18 
PARTS LIST...............................................19 

 

READ THIS OWNER’S MANUAL 

Operate and maintain this gas heater according to 
instructions in this manual. Read this manual in 
its entirety. 

 

 

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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