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Benchmark 750-3000 Boiler Operation & Maintenance Manual
SECTION 4 – MAINTENANCE
BMK 1500-3000 Burner Inspection Instructions
NOTE:
The LOWER RELEASE GASKET (P/N 81186)
features four tabs around its periphery.
81183 – UPPER RELEASE GASKET
81166 – MIDDLE BURNER GASKET
81186 – LOWER RELEASE GASKET
BARE
BURNER
INSTALLED IN
HEAT
EXCHANGER
ASSY.
Figure 4-6: Bare Burner and Replacement Gaskets Location
15. Beginning with the burner assembly, reinstall all the components in the reverse order that
they were removed. When reinstalling the blower plenum (removed in step 11), tighten the
3/8-16 nuts using a typical torque pattern (for example, loosely tighten one nut, then
loosely tighten a second nut on the opposite side, a third at 90 degrees to the first two, and
a fourth opposite the third, and then repeat this pattern with the remaining four nuts.
Repeat the entire pattern a second time to partially tighten all eight nuts, and then repeat a
third time until all eight nuts are fully torqued to
16. Ensure that the igniter-injector and flame detector cutouts in the burner plate are properly
aligned with the heat exchanger top flange.
This completes the Benchmark 1500/3000 burner inspection.
OMM-0122_D • GF-206 • 5/9/2019
Use ALL THREE gaskets provided, even if there
is only one existing gasket being replaced.
35 ft. lbs. (47.5
Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST
IMPORTANT!
Nm).
Page 52 of 164
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