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In normal operation at full rate after 15 minutes the following flame appearance should be observed.

FLAMES
The flames behind log #1, and in between log #2, should be yellow with a blue base.  (See Below,
Figure 12)

Figure 12. Flames - Natural Gas and LP Gas

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.

FLAME APPEARANCE

#1

#2

CLEANING / SERVICING

15

Summary of Contents for Fiero C9947L

Page 1: ...ors and liquids in the vicinity of this or any other appliance WHAT TO DO IFYOU 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...

Page 2: ... 17 PARTS LIST FOR BURNER AND LOG ASSEMBLY 18 19 TROUBLE SHOOTING 20 21 OPTIONAL EQUIPMENT 22 WIRING DIAGRAMS 23 25 NOTES 26 LIMITED WARRANTY POLICY 27 TABLE OF CONTENTS 2 Installation and repair must be done by a qualified service person The appliance should be in spected before use and at least annually by a professional service person More frequent cleaning may be required due to excessive lint...

Page 3: ...ier 5 To prevent malfunction and or sooting a vent free 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 6 Correct placement of the ceramic fiber logs is necessary to avoid problems with sooti...

Page 4: ...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 19 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 psig 3 5 kPa 20 Do not use this heat...

Page 5: ...acket containing Homeowner s Installation instructions 2 Three 3 individually wrapped fiber ceramic logs refer to installation instructions 3 Unvented gas heater CHECK THAT ALL LISTED PARTS HAVE BEEN RECEIVED CONTENTS Gas Rate Number Model Number Type Max BTU Hr Min BTU Hr of Burners 9947N Manual 39 900 27 000 1 9947L Manual 39 900 27 000 1 Controls Main control has 4 positions 1 OFF All gas to th...

Page 6: ...hall not be installed in a confined space unless provisions are provided for adequate combus tion and ventilation air a Walls and ceiling exposed to the outside atmosphere have a continuous water vapor retarded with a rating of 1 perm 6 x 10 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 a...

Page 7: ... full width and depth of the appliance FIGURE 3 Minimum Clearances Ensure the minimum clearances shown in FIGURE 3 are maintained for accessibility for purposes of servicing and proper operation Left and right clearances are determined when facing the front of the heater WARNING WARNING WARNING Minimum clearances to combustibles Top of heater 36 Right Side of heater 15 Left Side of heater 8 Front ...

Page 8: ...lation does not meet the below minimum clearances you must Raise the mantel to an acceptable height OR Remove the mantel MANTEL CLEARANCES BACK WALL MANTEL SHELF DISTANCE TO UNDERSIDE OF MANTEL UNDERSIDE OF MANTEL SHELF TOP OF HEATER MINIMUM CLEARANCE TO BACK WALL FLOOR ALL MINIMUM DISTANCES ARE IN INCHES MINIMUM MANTEL CLEARANCES Figure 4 ...

Page 9: ...ned copper tubing can be used in some areas when permitted by local codes Only use pipe of 1 2 or greater diameter to allow full gas volume to heater Excessive pressure loss will 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 5 A sediment trap must be installed upstream of the heater to prevent ...

Page 10: ...t and locked to avoid tampering If the pressure is not as specified in Product Specifications Page 5 contact your dealer and replace the regulator FIGURE 7 Pressure Test Point Location 10 GAS CONNECTION GAS PRESSURE CHECK FIGURE 6 Rear View of 9947 Vent Free Gas Heater Gas Inlet Connection 3 8 NPT The gas inlet connection is 3 8 NPT made at the rear of the unit in the bottom left hand corner Test ...

Page 11: ...irmly situated in the appliance Never add additional logs or embellishments such as pine cones vermiculite or rock wool to the heater REMOVING FRONT SCREEN 1 Remove screw from the top of the screen Fig 8A 2 Tilt the top of the screen toward you slightly and lift the screen up out of the screen retainer Fig 8B NOTE To reinstall the front screen reverse steps 1 2 FIG 8A FIG 8B REMOVING FRONT SCREEN ...

Page 12: ...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...

Page 13: ...enreleased stop and immediatelycallyourservicetechnicianor gas supplier If the pilot will not stay lit after several tries turn control knob to OFF and call your gas supplier 9 Turn valve knob clockwise to ON 10 Wait about one minute then turn burner switch D to ON It will take a few minutes for the thermopile located on top of the pilot to heat up NOTE If unit is equipped with remote on off wall ...

Page 14: ...o couple then the main burner is unlikely to func tion reliably FIGURE 11 FIGURE 11 Incorrect Shape of Pilot Flame Wait 30 seconds before readjusting the heater when the control has been turned down to a lower setting WARNING 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 t...

Page 15: ... 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 i...

Page 16: ...HEATER ASSEMBLY 16 ...

Page 17: ...er Frame 1 20 89933 Long Louver 2 21 89934 Short Louver 4 22 24795 Front Screen 1 23 24794 Side Screen 2 24 86483 Thermodisc Bracket 1 25 80381 Thermodisc 1 N S 83351 8 x 3 8 Hex Head Screw 2 26 89824 Latch 2 27 89811 Hinge 2 28 89943 Knob Cabinet Door 1 29 24796 Support Right Cabinet 1 N S 83172 10A x 1 2 Hex Head Screw 93 30 83888 120 CFM Blower 1 31 83278 10 Flat Washer 4 32 83244 10 24 Kep Nut...

Page 18: ...BURNER AND LOG ASSEMBLY 14 4 2 18 20 19 11 8 9 18 3 5 6 13 16 15 1 12 7 17 10 ...

Page 19: ...88 CONTROL BRACKET 1 8 81198 CONTROL VALVE NATURAL 1 81202 CONTROL VALVE L P 1 9 83464 10 32 x 3 8 MACHINE SCREW 4 10 89918 GAS LINE NATURAL 1 89923 GAS LINE L P 1 11 C42373 ROCKER SWITCH 1 12 80376 WIRE ASSEMBLY 2 13 89761 PIEZO IGNITOR 1 14 80423 PIEZO CABLE 1 15 81199 KNOB EXTENSION ON OFF 1 16 81200 KNOB EXTENSION HI LOW 1 17 24888 LOG SUPPORT 2 18 89940 FRONT LOG 1 19 89939 REAR LOG 1 20 8994...

Page 20: ...tive Locate and correct all leaks Replace control valve Gas odor even when control knob is in OFF position Gas supply turned off or manual shutoff valve closed Control knob not in PILOT position Control knob not pressed in while in Pilot position Air in gas lines when installed ODS Pilot is clogged Gas regulator setting is not correct Turn on gas supply or open manual shutoff valve Turn control kn...

Page 21: ...e Dirty or partially clogged burner orifice LP regulator shut down due to inlet pressure too high Hand tighten until snug then tighten 1 4 turn more Contact local gas company Replace thermocouple Replace control valve Clean burner or replace burner orifice Replace burner orifice Contact qualified service person Contact local gas company Clean burner or replace burner orifice Clean burner or replac...

Page 22: ...NT REMOTE SKYTECH SKYTECH 1001 ON OFF INDICATOR R E M O T E NO OFF SKYTECH 50 60 70 80 90 21 10 32 c 50 60 70 80 90 21 10 32 c MODEL RCK60 REMOTE CONTROL KIT MODEL WSK60 WALL SWITCH KIT MODEL WTK60 WALLTHERMOSTATKIT 22 ...

Page 23: ...OR GENERATOR ASSEMBLY WIRING DIAGRAM FOR BLOWER ASSEMBLY 1 4 MALE INS 1 4 FEMALE INS 1 4 FEMALE INS 1 4 FEMALE INS 1 4 FEMALE INS 1 4 MALE INS 1 4 MALE INS 1 4 FEMALE INS BLACK BLACK WHITE NEUTRAL BLACK HOT GREEN GROUND RHEOSTAT THERMODISC BLOWER 80425 28 80426 12 23 ...

Page 24: ...te Control Kit the WSK60 Wall Switch Kit and the WTK60 Wall Thermostat Kit cannot be used at the time 2 When using any of the three Optional Kits listed above the Rocker Switch on the unit must be set to OFF 3 If you choose to use any combination of the above Optional Kits only one of those kits can be used at a time Example If you have the Optional Remote Control Kit and the Optional Wall Switch ...

Page 25: ...er Note When combining these Optional kits only one kit can be used at a time Example If you want to control the operation of this unit with the Remote Control then you must turn the Wall Thermostat OFF When trying to use two Optional kits at once one will always override the other For further information contact our Customer Service Department at United States Stove Company 227 Industrial Park Ro...

Page 26: ...NOTES 26 ...

Page 27: ...ential damage The heater MUST BE INSTALLED BY A QUALIFIED INSTALLER in accordance with the instructions furnished with the unit The defective heater should be returned at your expense to the dealer from whom the product was purchased or an authorized service agent Any products presented for warranty repair must be accompanied by a dated proof of purchase Since some states do not allow the exclusio...

Page 28: ...ART NUMBER 2 The PART DESCRIPTION 3 The MODEL NUMBER 9947N 9947L 4 The SERIAL NUMBER THIS MANUAL WILL HELP YOU TO OBTAIN EFFICIENT DEPENDABLE SERVICE FROM THE FURNACE AND ENABLE YOU TO ORDER REPAIR PARTS CORRECTLY KEEP IN A SAFE PLACE FOR FUTURE REFERENCE WHEN WRITING ALWAYS GIVE THE FULL MODEL NUMBER WHICH IS ON THE NAME PLATE ATTACHED TO THE BACK OF THE HEATER WHEN ORDERING REPAIR PARTS OR OPTIO...

Page 29: ...fiberlogs Donothandletheselogswithyourbarehands Always wearglovestopreventskinirritationfromceramicfibers Afterhandlinglogs washyourhandsgentlywithsoap andwatertoremoveanytracesoffibers PROPER INSTALLATION SEQUENCE 1 Installtherearlog 2 ontherearsetoflocators Visuallychecktoverifythelogissecurelyplacedonthelocators 2 Installthefrontlog 1 onthefrontlocators Visuallychecktoverifythelogissecurelyplac...

Page 30: ...nstructionsexactly BEFORELIGHTINGsmellallaroundtheapplianceareaforgas Besuretosmellnexttothefloorbecause somegasisheavierthanairandwillsettleonthefloor WHAT TO DO IF YOU SMELL GAS Donotattempttolightanyappliance Donottouchanyelectricswitch donotuseanyphoneinyourbuilding Immediatelycallyourgassupplierfromaneighbor sphone Followthegassupplier sinstructions Ifyoucannotreachyourgassupplier callthefire...

Page 31: ...ral tries turn the gas control knob 1 to OFF and call your service technician or your gas supplier 7 Turn gas control knob1 counterclockwise to ON 8 Set the front burner knob 2 to the desired setting rotating counterclockwise to MAX and clockwise to MIN 9 Set the rear burner knob 3 to the desired setting rotating counterclockwise to MAX ON or MIN 10 Closeaccessdoorandturnonelectricalpower 1 STOP R...

Page 32: ...TING INSTRUCTIONS Ifthepilotwillnotlightusingthepiezoignitor youcanlightthepilotwithamatch First locatethepilot Thepilot islocatedbetweenthetwoburnertubesontherightend facingtheunit insidethefirebox Tolightpilotwitha match movethegascontrol knob1 pg 12 tothepilotpositionandholddown Lightmatchandplacenearpilot Oncepilotislit continuetoholdtheknobforabouttenseconds Thenfollowsteps7thru10onpage12 PIL...

Page 33: ...ion 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 FLAME APPEARANCE 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 obser...

Page 34: ...1 5 HEATER ASSEMBLY REPLACEMENT PARTS 1 2 3 4 5 6 7 8 11 10 9 12 13 ...

Page 35: ...7 69084 PEDESTAL WELDMENT 1 8 24455 PEDESTAL BASE 1 9 24457 CONTROL DOOR 1 10 89899 BRASS KNOB 1 11 83323 8 32 x 3 8 PH MACHINE SCREW 1 12 24536 FRONT SCREEN PAINTED 1 13 89825 BRASS TRIM 2 N S 89824 MAGNETIC LATCH 1 N S 83172 10A x 1 2 HX W SM SCREWS 58 IMPORTANT NOTICE WHEN ORDERING CABINET PARTS PLACE THE APPROPRIATE CODE AFTER THE PART NUMBER THAT CORRESPONDS TO THE COLOR OF YOUR UNIT ALMOND A...

Page 36: ...BURNER LOG ASSEMBLY 1 7 5 16 15 6 8 9 2 3 7 4 10 11 17 1 19 18 A B C D 20 13 14 12 ...

Page 37: ...ON SLEEVE 1 11 24612 PILOT BRACKET 1 12 89872 O P AMERICA NAT PILOT 1 89873 O P AMERICA L P PILOT 1 N S 83437 8 1 2 HX HD SCREW TO MOUNT PILOT 2 13 89841 3 16 COMPRESSION NUT 1 14 89842 3 16 COMPRESSION SLEEVE 1 15 89829 47 NATURAL BURNER ORIFICE FRONT 1 89836 55 L P BURNER ORIFICE FRONT 1 16 89830 48 NATURAL BURNER ORIFICE REAR 1 89836 55 L P BURNER ORIFICE REAR 1 17 24613 BURNER PAINTED 2 18 898...

Page 38: ... ventilation Contact local gas company Appliance shuts off in use ODS Pilot is partially clogged Gas leak Clean ODS Pilot Locate and correct all leaks Gas odor even when control knob is in OFF position Control valve defective Gas supply turned off or manual shutoff valve closed Control knob not in PILOT position Control knob not pressed in while in Pilot position Air in gas lines when installed OD...

Page 39: ...ty or partially clogged burner orifice LP regulator shut down due to inlet pressure too high Hand tighten until snug then tighten 1 4 turn more Contact local gas company Replace thermocouple Replace control valve Clean burner or replace burner orifice Replace burner orifice Contact qualified service person Contact local gas company Clean burner or replace burner orifice Clean burner or replace bur...

Page 40: ...T THIS OPTIONAL F40 BLOWER KIT IS AVAILABLE WHERE YOU PURCHASED THIS HEATER OR YOU CAN ORDER DIRECT FROM THE FACTORY BY CONTACTING THE PARTS DEPARTMENT AT THE NUMBER AND ADDRESS ON THE BACK PAGE OF THIS MANUAL BACK VIEW OF 9740 ...

Page 41: ...NOTES 2 2 ...

Page 42: ... MUST BE INSTALLED BY A QUALIFIED INSTALLER in accordance with the instructions furnished with the unit The defective heater should be returned at your expense to the dealer from whom the product was purchased or an authorized service agent Any products presented for warranty repair must be accompanied by a dated proof of purchase Since some states do not allow the exclusion on limitation of incid...

Page 43: ...R RECORDS 1 The PART NUMBER 2 The PART DESCRIPTION 3 The MODEL NUMBER 9740N 9740L 4 The SERIAL NUMBER THIS MANUAL WILL HELP YOU TO OBTAIN EFFICIENT DEPENDABLE SERVICE FROM THE FURNACE AND ENABLE YOU TO ORDER REPAIR PARTS CORRECTLY KEEP IN A SAFE PLACE FOR FUTURE REFERENCE WHEN WRITING ALWAYS GIVE THE FULL MODEL NUMBER WHICH IS ON THE NAMEPLATE ATTACHED INSIDE THE FRONT OF THE HEATER WHEN ORDERING ...

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