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.
•
100 Oritani Dr.
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Blauvelt, New York 10913
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Phone: 800-526-0288
6.1.4 Final Burner Reassembly
After Burner component replacement (Section 6.1.3), continue Burner reassembly as follows:
Final Burner Reassembly Instructions
1. Reinstall the grounding screw to the Burner Plate (Figure 4).
2. Connect lead wire to the Flame Detector (Figure 6).
3. Attach igniter cable to the Igniter-Injector assembly (Figure 6).
4. Reconnect the unit wiring harness connectors to the Air/Fuel Valve and Blower motor.
5. Reconnect the wire leads connected to the Blower proof switch and blocked inlet switch.
6. During the Burner maintenance process, the following items (included in the maintenance
kit) should have been replaced:
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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)
7. This completes the Burner Maintenance for the BMK1.5LN boiler. Proceed to section 6.2
for Exhaust Manifold maintenance instructions.
6.2 Exhaust Manifold Maintenance
The Exhaust Manifold of the Benchmark 1.5LN is installed at the rear of the unit as shown in
Figure 9.
6.2.1 Exhaust Manifold Disassembly and Inspection
To remove and inspect the Exhaust Manifold:
Exhaust Manifold Disassembly and Inspection Instructions
1. Remove the four (4) bolts securing the flue starter section collar to the top of the exhaust
manifold.
2. Disconnect the flue starter section from the exhaust manifold.
3. Disconnect the Condensate Trap drain hose from the 1-1/2" O.D. pipe on the exhaust
manifold.
4. Using a 3/4" socket wrench, remove the three bolts securing the exhaust manifold to the
heat exchanger (Figure 9).
5. Remove the exhaust manifold and seal from the rear of the unit.
6. Remove the silicone rubber seal from the recess in the flange of the exhaust manifold.
Ensure that all seal residue is removed from the flanges of the exhaust manifold and heat
exchanger.
7. Inspect and clean the exhaust manifold as necessary.