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United States Stove A9740N manual

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  • Page 1

    1 UNITED STATES STOVE COMPANY Propane (LPG) Model A9740L C9740L G9740L Natural Gas Model A9740N C9740N G9740N VENT-FREE PEDESTAL GAS HEATER INSTALLATION AND OPERATION INSTRUCTIONS WARNINGS 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. Do n[...]

  • Page 2

    2 TABLE OF CONTENTS IMPORTANT SAFETY INFORMATION ..................................................... .....3-4 PRODUCT FEATURES..........................................................................................4 SPECIFICATIONS ............................................................................................... ....5 CONTENTS ....[...]

  • Page 3

    3 IMPORTANT SAFETY INFORMATION INSTALLER: Please leave these instructions with the owner. OWNER: Please retain these instructions for future reference. IMPORTANT: Read these instructions carefully before installing or trying to operate this heater. WARNING: Any change to this heater or its controls can be dangerous. Improper installation or use of [...]

  • Page 4

    4 IMPORTANT SAFETY INFORMATION Keep appliance area clear and free from combustible materials, gasoline and other flammable vapors and liquids. Any safety screen or guard removed for servicing, must be replaced prior to operating the heater. This vent-free gas heater is intended to be smokeless. If logs appear to smoke, turn off the heater and call [...]

  • Page 5

    5 SPECIFICATIONS Natural Gas Manifold Pressure Setting 4" w.c. Gas Inlet Pressure Maximum 10-1/2" w.c. Minimum 5" w.c. Gas Rate Number Model Number Type Max BTU/Hr Min BTU/Hr of Burners 9740N Manual 39,900 10,000 2 Propane / LPG Note: An external regulator is required to reduce supply pressure to a maximum of 13" w.c. Manifold P[...]

  • Page 6

    6 ADEQUATE COMBUSTION AND VENTILATION AIR This heater shall not be installed in a confined space or unusually tight construction unless provisions are provided for adequate combustion and ventilation air. Unusually tight construction is defined as construction where: (a) Walls and ceilings exposed to the outside atmosphere have a continuous water v[...]

  • Page 7

    7 INSTALLATION The following formula can be used to determine the maximum heater rating per the definition of unconfined space: BTU/HR = (L1+L2) Ft x (W) Ft x (H) Ft x 1000 50 Consider two connecting rooms with an open area between, with the following dimensions:(See Fig. 3, Example) L1=15-1/2 Ft., L2=12 Ft., W=12 ft., H=8Ft 50 =52800 BTU/HR If the[...]

  • Page 8

    8 GAS CONNECTION NOTICE CAUTION IMPORTANT: Loosen the pipe adapter on the flex tube before installing to the system piping. FIGURE 5. Gas Connection CHECK GAS TYPE: The gas supply must be the same as stated on heater's rating plate. If the gas supply is different, DO NOT INSTALL the heater. Contact your dealer for the correct model. Connecting[...]

  • Page 9

    9 GAS CONNECTION GAS PRESSURE CHECK The heater regulator controls the burner pressure which should be checked at the pressure test point located on the right side of the main control and is accessible from the side of the gas log assembly (see FIGURE 7). The pressure should be checked with the heater burning and the control set to high (HI). The pr[...]

  • Page 10

    10 REMOVING FRONT SCREEN WARNING FRONT SCREEN The front screen must be in place at all times when the appliance is operating. Do not obstruct the screened openings of the heater. The positioning of the logs is critical to the safe and clean operation of this heater. Sooting and other problems may result if the logs are not properly and firmly situa[...]

  • Page 11

    11 OPERATING INSTRUCTIONS Avoid any drafts that alter the burner flame patterns. Do not allow fans to blow directly into the heater. Do not place a blower inside burn area of firebox. Ceiling fans may create drafts that alter burner flame patterns. Sooting and improper burning will occur. This vent-free gas heater is intended to be smokeless. If lo[...]

  • Page 12

    12 6 . Push in the control (knob 1) all the way and rotate counter-clockwise to "PILOT". The piezo ignitor will light the pilot as the knob passes "IGN" traveling to the "PILOT". Con tinue to hold the control (knob 1) in for about ten (10) seconds after the pilot is lit. Release knob and it should pop back up. Pilot sh[...]

  • Page 13

    13 Annual inspection and cleaning by your dealer or qualified service technician is recommended to prevent malfunction and/or sooting. Remove front screen, (see page 6). Carefully lift screen from locating stubs and set aside during cleaning. Refer to instructions on page 6 for installation of screen. Do not operate the unit with the screen removed[...]

  • Page 14

    14 CLEANING / SERVICING 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 va[...]

  • Page 15

    15 HEATER ASSEMBLY REPLACEMENT PARTS 1 2 3 4 5 6 7 8 11 10 9 12 13[...]

  • Page 16

    16 PARTS LIST FOR HEATER ASSEMBLY K E Y PART # DESCRIPTION QTY. 1 69113 CABINET TOP WELDMENT 1 2 69134 FIREBOX BACK WELDMENT 1 3 69065 FIREBOX TOP WELDMENT 1 4 69102 INSIDE BACK WELDMENT 1 5 69070 FIREBOX WELDMENT 1 6 24469 FIREBOX BOTTOM 1 7 69084 PEDEST AL WELDMENT 1 8 24455 PEDESTAL BASE 1 9 24457 CONTROL DOOR 1 10 89899 BRASS KNOB 1 11 83323 8-[...]

  • Page 17

    17 BURNER & LOG ASSEMBLY 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 18

    18 PARTS LIST FOR GAS LOG ASSEMBLY K E Y PART # DESCRIPTION QTY. 1 24610 BURNER PLATE 1 2 24611 CONTROL BRACKET 1 3 81189 CONTROL VALVE (NATURAL) 1 81190 CONTROL VALVE (L.P.) 1 4 83251 10-24 x 1 SL ROD 2 5 83244 10-24 KEP NUT 2 N/S 83343 #10 X 1/2 HX HD SCREW 8 6 89831 BURNER/CONTROL FITTING 1 7 89834 1/4" TUBE, BURNER/REGULATOR 1 8 89838 1/4 [...]

  • Page 19

    19 TROUBLESHOOTING Turn off and let cool before servicing. Only a qualified service person should service and repair heater. NOTE: All troubleshooting items are listed in order of operation. REMEDY POSSIBLE CAUSE OBSERVED PROBLEM When ignitor button is pressed, there is no spark at ODS/Pilot. Ignitor electrode positioned wrong Ignitor electrode is [...]

  • Page 20

    20 TROUBLESHOOTING, CONTINUED... ODS/Pilot lights, but flame goes out When control knob is released. (continued from page 17) One or both burner do not light after ODS/pilot is lit. Burner backfires during combustion. Slight smoke or odor during initial operation. Logs appear to smoke after initial operation. Heater produces a whistling noise when [...]

  • Page 21

    21 OPTIONAL F40 BLOWER KIT 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 22

    22 NOTES[...]

  • Page 23

    23 This vent-free gas heater is warrantied for a period of one year, logs for one year, and burners for One Year, from date of purchase against defects in material or workmanship. This warranty covers only the cost of defective parts and applies only to the original consumer purchaser. The replacement of defective parts will be without charge. This[...]

  • Page 24

    24 OWNERS MANUAL HOW TO ORDER REPAIR PARTS OR "OPTIONS" UNITED STATES STOVE COMPANY 227 Industrial Park Rd., P.O. Box 151 South Pittsburg, TN 37380 (423) 837-2100 C O M P A N Y U N I T E D S T A T E S S T O V E C S S U BEFORE INSTALLING YOUR HEATER, FILL IN THE SE- RIAL NUMBER IN THE SPACE PROVIDED ABOVE FOR YOUR RECORDS. 1. The PART NUMB[...]