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Manafacture: Honeywell File size: 187.36 kb File name: Language of manual:

PILOT BURNER/IGNITER-SENSOR MUST BE RIGIDLY POSITIONED RELATIVE TO MAIN BURNER M3271 Fig. 1—Mount pilot burner/igniter-sensor on main burner. Fig. 2—Location of pilot burner/igniter-sensor. PILOT BURNER/ PILOT BURNER/ IGNITER- PILOT BURNER/ IGNITER- SENSOR IGNITER- SENSOR JUST RIGHT SENSOR TOO HIGH TOO LOW IGNITION MAIN BURNER JUST MISSES IGNITION FLAME FLAME WILL FLAME WILL MAIN BURNER IMPINGE ON IMPINGE ON MAIN BURNER IGNITION- SENSOR M3273 2. Mount pilot burner/igniter-sensor on main burner. Mounting surfaces other than the main burner may shift, bend, or warp as furnace expands and contracts while operating. See Fig. 1. 3. Mount pilot burner/igniter-sensor so the pilot flame remains properly positioned with respect to the main burner flame. See Fig. 2. 4. Supply pilot flame with ample air free of combustion products. 5. Do not impinge pilot flame on adjacent parts. Do not impinge main burner flame on pilot burner/ igniter-sensor. 6. Do not expose pilot flame to falling scale, which could impair main burner ignition. 7. Do not expose pilot burner/igniter-sensor to main burner rollout while igniting or extinguishing. 8. Do not expose pilot flame to drafts that push or pull pilot flame away from the igniter-sensor. NOTE: The Q381A Pilot Burner/Igniter-Sensor is for horizontal mounting only. Mounting bracket must remain vertical. G. S. • Rev. 7-93 • ©Honeywell Inc. 1993 • Form Number 60-0653—8 CONNECT PILOT GAS TUBING CONNECT PILOT GAS TUBING Cut tubing to desired length and bend as necessary for routing to pilot burner/igniter-sensor. Do not make sharp bends or deform tubing. Do not bend tubing at control after compression nut has been tightened because this can result in gas leakage at connection. 2. Square off and remove burrs from end of tubing. 3. Push tubing into compression nut clearance hole until tubing bottoms. NOTE: When replacing a control, cut off old compression fitting and replace with new compression fitting provided with new pilot burner. Never use old compression fitting because it may not provide a gas-tight seal. See Fig. 3. Fig. 3—Always use new compression fitting. M3296 PILOT BURNER BODY ON BRACKET OF PILOT BURNER/IGNITER-SENSOR COMPRESSION FITTING BREAKS OFF AND CLINCHES TUBING AS NUT IS TIGHTENED TIGHTEN NUT ONE TURN BEYOND FINGER TIGHT TO GAS CONTROL 2. Connect one end of the ignition cable to stud terminal on igniter-sensor using 1/4 in. [6 mm] diameter snap-spring or cage-clips on cable ends. 3. Connect the other end of the ignition cable to the igniter terminal on ignition module. 4. Use ceramic or plastic standoff insulators as necessary to prevent cable from contacting metal surfaces. INSTALL BLEED GAS TUBE (optional) 1. Route bleed tube from bleed tap on gas control to the pilot burner/igniter-sensor. 2. Push clip into place. See Fig. 4. 3. Insert bleed gas tube until 3/8 in. [10 mm] to tubing is above pilot burner/igniter-sensor bracket. Tip of bleed gas tube must not extend into pilot flame. Fig. 4—Ins...

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