Benchmark 750-3000 Boiler Operation & Maintenance Manual
SECTION 4 – MAINTENANCE
OMM-0122_D
•
GF-206
•
5/9/2019
Technical Support
•
(800) 526-0288
•
Mon-Fri, 8 am - 5 pm EST Page 49 of 164
4.6.2 BMK 1500 – 3000 BURNER INSPECTION
BMK 1500-3000 Burner Inspection Instructions
Figure 4-5a: BMK 1500/2000 Burner Assembly Mounting Details
Figure 4-5b: BMK 1500/2000 Burner Assembly Mounting Details
5/16” x 1-3/4” BOLTS,
5/16” WASHERS &
NYLOCK NUTS (4 each)
BLOWER
PLENUM
AIR
FILTER
A/F VALVE
PLENUM
BLOWER
BURNER PLATE
3/8”-16
HEX NUTS
(8 each)
IGNITER-
INJECTOR
ASSEMBLY
1/2” NUTS
& BOLTS (4 ea.)
3/8”-16
HEX NUTS
(8 each)
5/16” x 1-3/4” BOLTS, 5/16”
WASHERS & NYLOCK
NUTS (4 each)
A/F VALVE PLENUM
AIR
FILTER
AIR/FUEL VALVE
GAS
TRAIN
BLOWER
PLENUM
GAS INLET PIPE
BLOCKED INLET
SWITCH
BLOWER PROOF
SWITCH
BLOWER
MANUAL SHUT-
OFF VALVE