Page 2 - TABLE OF CONTENTS; NOTICE
2 TABLE OF CONTENTS IMPORTANT SAFETY INFORMATION ..................................................... .....3-4 PRODUCT FEATURES..........................................................................................4 SPECIFICATIONS ....................................................................
Page 3 - IMPORTANT SAFETY INFORMATION; INSTALLER: Please leave these instructions with the owner.; WARNING
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 ...
Page 5 - SPECIFICATIONS; CAUTION; CONTENTS
5 SPECIFICATIONS Natural GasManifold 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 / LPGNote: An external regulator is required to reduce supply pressu...
Page 6 - ITEMS REQUIRED FOR INSTALLATION; American National Standards Institute, Inc.
6 ADEQUATE COMBUSTION AND VENTILATION AIRThis heater shall not be installed in a confined space or unusually tight construction unless provisions are providedfor adequate combustion and ventilation air.Unusually tight construction is defined as construction where: (a) Walls and ceilings exposed to t...
Page 7 - INSTALLATION; FIGURE 4. Minimum Clearances
7 INSTALLATION The following formula can be used to determine the maximumheater 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...
Page 8 - GAS CONNECTION; FIGURE 5. Gas Connection
8 GAS CONNECTION NOTICE CAUTION IMPORTANT: Loosen the pipe adapteron the flex tube before installing to thesystem 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 isdifferent, DO NOT INSTALL the heater. Contact you...
Page 9 - FIGURE 7. Pressure Test Point Location; FIGURE 6. Rear View of 9740 Vent-Free Gas Heater
9 GAS CONNECTION GAS PRESSURE CHECK The heater regulator controls the burner pressure which should be checked at the pressure test point located on theright 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...
Page 10 - REMOVING FRONT SCREEN; FIGURE 8. Log Set Assembly; LOG ASSEMBLY
10 REMOVING FRONT SCREEN WARNING FRONT SCREENThe front screen must be in place at all times when the appliance is operating. Do not obstruct the screened openingsof the heater. The positioning of the logs is critical to the safe and clean operation of this heater.Sooting and other problems may resul...
Page 11 - OPERATING INSTRUCTIONS; WHAT TO DO IF YOU SMELL GAS; FOR YOUR SAFETY READ BEFORE LIGHTING
11 OPERATING INSTRUCTIONS Avoid any drafts that alter the burner flame patterns. Do not allow fans to blow directly into the heater. Do not placea blower inside burn area of firebox. Ceiling fans may create drafts that alter burner flame patterns. Sooting andimproper burning will occur. This vent-fr...
Page 12 - LIGHTING INSTRUCTIONS; Meritik
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 knobpasses "IGN" traveling to the "PILOT". Continue to hold the control (knob 1) in for aboutten (10) seconds after the pilot is lit. Releasekn...
Page 14 - FLAME APPEARANCE; FIGURE 11. Flames - Natural Gas and LP Gas
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...
Page 15 - HEATER ASSEMBLY REPLACEMENT PARTS
15 HEATER ASSEMBLY REPLACEMENT PARTS 1 2 3 4 5 6 7 8 11 10 9 12 13
Page 16 - PARTS LIST FOR HEATER ASSEMBLY; KEY
16 PARTS LIST FOR HEATER ASSEMBLY KEY 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 PEDESTAL WELDMENT 1 8 24455 PEDESTAL BASE 1 9 24457 C...
Page 17 - BURNER & LOG ASSEMBLY
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 - PARTS LIST FOR GAS LOG ASSEMBLY
18 PARTS LIST FOR GAS LOG ASSEMBLY KEY 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...
Page 19 - TROUBLESHOOTING; REMEDY
19 TROUBLESHOOTING Turn off and let cool before servicing. Only a qualified service person should serviceand repair heater. NOTE: All troubleshooting items are listed in order of operation. REMEDY POSSIBLE CAUSE OBSERVED PROBLEM When ignitor button is pressed, there is nospark at ODS/Pilot. Ignitor ...
Page 20 - POSSIBLE CAUSE
20 TROUBLESHOOTING, CONTINUED... ODS/Pilot lights, but flame goes outWhen control knob is released.(continued from page 17) One or both burner do notlight after ODS/pilot is lit. Burner backfires duringcombustion. Slight smoke or odor duringinitial operation. Logs appear to smoke afterinitial operat...
Page 21 - OPTIONAL F40 BLOWER KIT
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 - NOTES
Page 23 - LIMITED WARRANTY POLICY
23 This vent-free gas heater is warrantied for a period of one year, logs for oneyear, and burners for One Year, from date of purchase against defects inmaterial or workmanship. This warranty covers only the cost of defective partsand applies only to the original consumer purchaser. The replacement ...
Page 24 - OWNERS MANUAL; UNITED STATES STOVE COMPANY; The PART DESCRIPTION
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 COMPANY UN IT ED STATES ST OVE C S S U BEFORE INSTALLING YOUR HEATER, FILL IN THE SE-RIAL NUMBER IN THE SPACE PROVIDED ABOVE FORY...