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Benchmark 750-3000 Boiler Operation & Maintenance Manual
SECTION 4 – MAINTENANCE
OMM-0122_D
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GF-206
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5/9/2019
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(800) 526-0288
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Mon-Fri, 8 am - 5 pm EST Page 40 of 164
4.2 IGNITER-INJECTOR
The igniter-injector (Kit P/N
58023
) is located on the burner plate at the top of the boiler. In
addition to providing the ignition spark required to light the burner, the igniter-injector also
contains a gas injector tube which connects to the staged ignition assembly. Figure 4-1a
through Figure 4-1c shows the complete burner assembly removed from the boiler and indicates
the location of the igniter-injector flame detector and other related components.
Figure 4-1a: BMK 750/1000 Burner Assembly (Removed from Boiler)
STAGED IGNITION
SOLENOID
O2 SENSOR
BURNER PLATE
BURNER
AIR/FUEL VALVE
BLOWER
IGNITER-INJECTOR
FLAME DETECTOR
GAS FLEX HOSE
BLOWER PROOF SWITCH
BLOCKED INLET SWITCH