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Benchmark 750-3000 Boiler Operation & Maintenance Manual
SECTION 4 – MAINTENANCE
4.6.1 BMK 750/1000 BURNER INSPECTION
BMK 750/1000 Burner Inspection Instructions
REAR
BURNER PLATE
3/16"–16 HEX NUTS (8)
IGNITER-INJECTOR
STAGED IGNITION
ASSEMBLY
1/2" BOLTS & NUTS (4)
(GAS TRAIN-to-A/F
VALVE)
Figure 4-4a: BMK 750/1000 Burner Assembly Mounting Details (Overhead View)
BLOWER PROOF SWITCH
BLOWER
O2 SENSOR
FLAME DETECTOR
BURNER GASKET
BURNER PLATE
BURNER
Figure 4-4b: BMK 750/1000 Burner Assembly (Exploded View)
1. Set the ON/OFF switch on the C-More Controller to the OFF position. Disconnect AC
power from the unit and turn off the gas supply.
2. Remove the top shroud from the unit by grasping the top handle and lifting straight up. This
will disengage the shroud from the four (4) pins in the side panels.
OMM-0122_D • GF-206 • 5/9/2019
Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST
FRONT
BLOWER
BLOWER PROOF
SWITCH
BLOCKED INLET
SWITCH
AIR FILTER
BLOCKED INLET
SWITCH
AIR/FUEL VALVE
STAGED IGNITION
IGNITER/INJECTOR
Page 47 of 164
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