VD2: 10/14/14
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BMK1.5 LN Boiler 24-Month Maintenance Kit #58025-05 Instructions
Technical Instruction Document
TID-0066_0B
AERCO International, Inc.
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100 Oritani Dr.
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Blauvelt, New York 10913
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Phone: 800-526-0288
5. To each of the eight (8) Burner mounting studs coming up through the Burner flange, add
one of the 3/8” flat washers removed during disassembly.
6. After placing the washers, apply Loctite 246 to the Burner mounting studs. While
supporting the housing so it is level with the Burner flange, use a torque wrench to tighten
the eight (8) 3/8-16 hex nuts on the Burner flange to 35 ± 5 ft-lbs. Use an alternating
pattern when tightening the hex nuts to ensure a uniform seal.
7. Replace the Air/Fuel Valve to Gas Train O-ring (P/N 88003) with one in the kit and then
reassemble the Air/Fuel Valve to the gas-train flange by reinstalling the four (4) 1/2" bolts
and nuts (Figure 4). Use an alternating pattern when tightening the bolts to ensure a
uniform seal.
NOTE
At this point in the Burner reassembly process, the following new
items should be installed (included in the maintenance kit). See
section 6.1.2 for component replacement instructions.
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Blower Gasket (P/N 81064)
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Burner Gaskets (2 x P/N 81063)
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Air/Fuel Valve to Gas-Train O-Ring (P/N 88003)
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Igniter-Injector (P/N 66026, a component of kit P/N 58023).
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Flame Detector and gasket (P/N 66034 & 81048).
8. Replace Burner and Burner Plate back onto heat exchanger, making sure to align the
holes for the Igniter-Injector, Flame Detector, and other components in the Burner Plate
with the holes of the heat exchanger top head.
9. Proceed to section 6.1.2 for instructions to replace the Igniter-Injector and Flame Detector
components prior to final Burner reassembly.
6.1.3 Burner Component Replacement
The old components that need to be replaced have already been removed during the
disassembly process in section 6.1.1. The following instructions show how to install the new
parts during the Burner reassembly process.
6.1.3.1
Igniter-Injector Installation
The spark Igniter-Injector (P/N 66026) installation is accomplished as follows:
Igniter-Injector Installation Instructions
1. Burner, Burner Plate, and Blower must first be completely reassembled to the Burner.
2. Prior to installing the replacement Igniter-Injector, high temperature, conductive, anti-seize
lubricant must be applied to the Igniter-Injector threads. A small tube of this lubricant is
included in the Igniter-Injector replacement kit (P/N 58023).
