Owner manual

Benchmark 1500DF - 2000DF Boilers
CHAPTER 7 – MAINTENANCE
OMM-0098_0A AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 99 of 196
GF-144 Ph.: 800-526-0288 04/01/2014
Burner Assembly Inspection and Maintenance Procedure – Continued
Figure 7-4b: Burner Assembly Mounting Details
Figure 7-5: Bare Burner and Replacement Gaskets Location
81183 – UPPER RELEASE GASKET
81166 – MIDDLE BURNER GASKET
81186 – LOWER RELEASE GASKET
BARE
BURNER
INSTALLED
IN HEAT
EXCHANGER
ASSY.
IMPORTANT!
Use ALL THREE gaskets provided, even if there
is only one existing gasket being replaced.
NOTE
The LOWER RELEASE
GASKET (P/N 81186) features
four tabs around its periphery.
BLOWER
BLOWER
PROOF
SWITCH
AIR/FUEL
VALVE
BLOCKED
INLET
SWITCH
AIR
FILTER
NATURAL GAS
INLET
MANUAL
SHUT-OFF
VALVE
A/F VALVE
PLENUM
PROPANE
INLET
5/16” x 1-3/4” BOLTS,
5/16” WASHERS &
NYLOCK NUTS
(4 each)
3/8”-16
HEX NUTS
(8 each)