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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.
•
Blauvelt, New York 10913
•
Phone: 800-526-0288
4. Refer to the partial exploded view in Figure 6. Using a 7/16” open-end wrench, disconnect
the compression nut securing the Gas Injector Tube of the Igniter-Injector to the elbow of
the Staged Ignition Assembly. Remove the compression nut from the elbow and discard,
as it will be replaced with a new one from the kit at reassembly. Disconnect the Staged
Ignition Assembly from the Igniter-Injector.
5. Next, loosen and remove the Igniter-Injector from the Burner Plate using a 1" open-end
wrench.
6. Remove the two screws securing the Plug Gasket (P/N 81129), remove the existing Plug
Gasket and replace it with one from the kit, and then secure it with the two screws.
7. Disconnect the unit wiring harness connectors from the Air/Fuel Valve and Blower motor
(Figure 5).
8. Disconnect the Fast-On wire leads connected to the Blower Proof Switch and Blocked Inlet
Switch (Figure 5).
Figure 6: Partial Exploded View Showing Flame Detector, Igniter-Injector, and
Staged Ignition Assembly on Burner Plate
9. Disconnect the Gas-Train from the Air/Fuel Valve flange by removing the four (4) 1/2" bolts
and nuts (Figure 4). Remove the Air/Fuel Valve to Gas Train O-ring (P/N 88003), as it will
be replaced at reassembly.
10. Disconnect the inlet air flex hose from the Air/Fuel Valve (Figures 2 & 4) by loosening the
hose clamp.
COMPRESSION NUT
(P/N 56047)
IGNITER-INJECTOR
(P/N 66026)
IGNITER-INJECTOR
CABLE ATTACHED HERE
INDEXING WASHERS
(QTY=3) AS REQ’D
(P/N 53033)
BURNER PLATE
FLAME DETECTOR
GASKET (P/N 81048)
FLAME DETECTOR
(P/N 66034)
FLAME DETECTOR
LEAD WIRE
ATTACHED HERE
STAGED IGNITION
SOLENOID
INJECTOR TUBE
PLUG GASKET
(P/N 81129)