AERCO BMK 1.5 LN Dual Fuel Feb 2013 - Manual (Page 84)

CHAPTER 7: MAINTENANCE
Page 84 of 162 PR2: 05/09/12
Benchmark 1.5LN Dual-Fuel Low NOx Boiler
Operation and Maintenance Manual
OMM-0041_0C
GF-121
AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 • Ph: 800-526-0288
Figure 7-4: RSI Calibration and Testing Manometer Installation Location
7.5 SAFETY DEVICE TESTING
Systematic and thorough tests of the operating and safety devices should be performed to
ensure that they are operating as designed. Certain code requirements, such as ASME CSD-1,
require that these tests be performed on a scheduled basis. Test schedules must conform to
local jurisdictions. The results of the tests should be recorded in a log book. See Chapter 6-
Safety Device Testing Procedures.
7.6 BURNER ASSEMBLY INSPECTION
The burner assembly (part no. 24012) is located at the top of the unit's heat exchanger. The
burner assembly may be hot. Therefore, allow the unit to cool sufficiently before removing the
burner assembly. It should be noted that the complete burner assembly also includes the blower
and air/fuel valve assemblies for the unit.
The following parts will be required for reassembly after burner inspection:
Part No. Description
81063 Burner Gaskets (Qty=2)
81048 Flame Detector Gasket
81064 Blower Gasket
To inspect or replace the burner assembly:
1. Set the ON/OFF switch on the control panel, to the OFF position. Disconnect AC power from
the unit and turn off the gas supply.
2. Remove the side and top panels from the unit.
PROPANE
GAS SSOV
RSI BLEED-OFF
BALL VALVE
NATURAL
GAS SSOV
TO AIR/FUEL
VALVE
PROPANE
GAS INLET
NATURAL
GAS INLET
MANUAL
SHUT-OFF
VALVE
RSI PRESSURE
REGULATOR
RSI SOLENOID
VALVE
1/4” NPT PLUG (install
manometer here for RSI
test and calibration)