ページ1に含まれる内容の要旨
Q345A, Q348A, Q348B, Q362A,Q373A
and Q381A Pilot Burner/Igniter-Sensors
Application
Fig. 1—Mount pilot burner/igniter-sensor on
main burner.
These pilot burner/igniter-sensors provide pilot flame
ignition and sensing in intermittent pilot systems. They
consist of a target type pilot burner with a combination
spark igniter and flame sensor mounted in place of the
thermocouple.
PILOT BURNER/IGNITER-SENSOR
MUST BE RIGIDLY POSITIONED
Installation M3271
RELATIVE TO MAIN BURNER
WHEN INSTALLING THI
ページ2に含まれる内容の要旨
CONNECT PILOT GAS TUBING 2. Connect one end of the ignition cable to stud 1. Cut tubing to desired length and bend as necessary terminal on igniter-sensor using 1/4 in. [6 mm] diam- eter snap-spring or cage-clips on cable ends. for routing to pilot burner/igniter-sensor. Do not make 3. Connect the other end of the ignition cable to the sharp bends or deform tubing. Do not bend tubing at control after compression nut has been tightened igniter terminal on ignition module. because this can result
ページ3に含まれる内容の要旨
Fig. 5—Igniter-sensor tip must be in pilot flame. Fig. 6—Proper shielding of pilot flame. 3/8 TO 1/2 INCH [10 TO 13 mm] PROPER FLAME ADJUSTMENT IGNITER-SENSOR Q373A PROPER FLAME 3/8 TO 1/2 INCH ADJUSTMENT [10 TO 13 mm] TYPICAL M1273 SHIELD IGNITER-SENSOR Set the thermostat to call for heat. Q345A, Q348A-B, Q362A AND Q 381A M3777 Watch the pilot burner during the ignition sequence. See if: • Ignition spark continues after the pilot is lit. • The pilot lights and the spark stops, but main
ページ4に含まれる内容の要旨
Fig. 7—Example of unsatisfactory pilot flames. CAUSE APPEARANCE APPEARANCE SMALL BLUE FLAME SMALL BLUE FLAME CHECK FOR LACK OF GAS FROM: • CLOGGED ORIFICE FILTER • CLOGGED PILOT FILTER • LOW GAS SUPPLY PRESSURE • PILOT ADJUSTMENT AT MINIMUM LAZY YELLOW FLAME LAZY YELLOW FLAME CHECK FOR LACK OF AIR FROM: • DIRTY ORIFICE • DIRTY LINT SCREEN, IF USED • DIRTY PRIMARY AIR OPENING, IF THERE IS ONE • PILOT ADJUSTMENT AT MINIMUM WAVING BLUE FLAME WAVING BLUE FLAME CHECK FOR: • EXCESSIVE DRAFT AT PILO
