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If so, you may need to press in control knob for 30 seconds. This will allow air to bleed from the gas system. pliance if service is to be performed. Shutting Off Burner Only (pilot stays lit) Turn control knob clockwise to the PILOT position. THERMOSTAT CONTROL OPERATION • Do not try to light any appliance. 6. Release downward pressure on con • Do not touch any electric switch; do trol knob and turn clockwise not use any phone in your building. to OFF position. • Immediately call your gas supplier 7. Press in control knob and turn coun from a neighbor’s phone. Follow The thermostatic control used on this terclockwise past IGN to the gas supplier’s instructions. model differs from standard thermo • If you cannot reach your gas supplier, call the fire department. C. Use only your hand to push in or turn the gas control knob. Never use tools. If the knob will not push in or turn by hand, don’t try to repair it, call a qualified service technician or gas PILOT (see Figure 19). This will cause the piezo ignitor to spark and light the pilot gas. Keep control knob depressed for 10 seconds before releasing. If needed, repeat steps 5 through 7 until pilot lights. stats. Standard thermostats simply turn on and off the burner. The thermostat used on this heater senses the room temperature. At times the room may exceed the set temperature. If so, the burner will shut off. The burner will cycle back on when room temperature drops below the set temperature. The control knob IGN ON supplier. Force or attempted repair may result in a fire or explosion. D. Do not use this appliance if any part 1 7 3 5 4 6 2 can be set to any comfort level between 1 OFF and 7. has been under water. Immediately call Note:The thermostat sensing bulb mea- Figure 19 - Dual Control for Thermostat a qualified service technician to inspect sures the temperature of air near the Model FBS-10BB the appliance and to replace any part heater cabinet. This may not always of the control system and any gas con trol which has been under water. Ignitor Electrode Thermocouple Pilot Burner agree with room temperature (depend ing on housing construction, installation location, room size, open air temperatures, etc.) Frequent use of your heater will let you determine your own comfort levels. Figure 20 - Pilot 12 105565 OWNER’S MANUAL OPERATING HEATER Continued MANUAL LIGHTING PROCEDURE 1. Follow steps 1 through 5 under Lighting Instructions, page 12. 2. With control knob pressed in, strike match. Hold match to pilot until pilot lights. 3. Keep control knob pressed in for 30 seconds after lighting pilot. After 30 seconds, release control knob. Follow steps 8 and 9 under Lighting Instructions, page 12. INSPECTING BURNER Check pilot flame pattern and burner flame pattern often. PILOT FLAME PATTERN Figure 21 shows a correct pilot flame pattern. Figure 22 shows an incorrect pilot flame pattern. The incorrect pilot flame is not touching the thermocouple. This will cause the thermocouple to cool. When the thermocouple cools, the heater will shut down. If pilot flame pattern is incorrect, as shown in Figure 22 • turn heater off (see To Turn Off Gas to Appliance, page 11 for non-thermostat models or page 12 for thermostat model) • see Troubleshooting, pages 14 through 16 Thermocouple Pilot Burner Figure 21 - Correct Pilot Flame Pattern Thermocouple Pilot Burner Figure 22 - Incorrect Pilot Flame Pattern BURNER FLAME PATTERN Figure 23 shows a correct burner flame pattern. Figure 24 shows an incorrect burner flame pattern. The incorrect burner flame pattern shows yellow tipping of the flame. It also shows the flame higher than 1/2 the glass panel height. WARNING: If yellow tipping occurs, your heater could pro- duce increased levels of carbon monoxide. If burner flame pat- tern shows yellow tipping, follow instructions below. NOTICE: Do not mistake orange flames with yellow tipping. Dust or other fine particles enter the heater and burn causing brief patches of orange flame. If burner flame pattern is incorrect, as shown in Figure 24 • turn heater off (see To Turn Off Gas to Appliance, page 11 for non-thermostat models or page 12 for thermostat model) • see Troubleshooting, pages 14 through 16 1/2 GLASS HEIGHT Models FB-10BA and FBS-10BB (Model FB-60BA will be lower due to lower input rating) Figure 23 - Correct Burner Flame Pattern Yellow Tipping 1/2 GLASS HEIGHT Figure 24 - Incorrect Burner Flame Pattern CLEANING AND MAINTENANCE WARNING: Turn off heater and let cool before cleaning. CAUTION: You must keep control areas, burner, and circu- lating air passageways of heater clean. Inspect these areas of heater before each use. Have heater inspected yearly by a quali- fied service person. Heater may need more frequent cleaning due to excessive lint from carpeting, bedding material, pet hair, etc. ODS/PILOT AND BURNER • Use a vacuum cleaner, pressurized air, or small, soft bristled brush to clean. CLEANING BURNER PILOT AIR INLET HOLE We recommend that you clean the unit every ...