Aerco Modulex MLX Series Technical Instructions

AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, New York 10913 • Phone: 800-526-0288 Page | 47
TID-0027_0A
1.4.3 - Maintenance of Burner Modules and Combustion Chamber
After disassembly of the boiler, do the procedures as described in Instruction 1.4.3.
1.4.4 - Reassembly After Burner Mainentance
After maintenance reassemble the unit per Instruction 1.4.4.
1.4.5 - Testing the Flame Detection Circuitry
The Modulex boiler is designed to automatically shut down in the absence of a flame to prevent the
buildup of unburned fuel in the combustion chamber. Test the circuit by removing a flame detector lead
from any of the burner sections (Figure 3) while the unit is running. If the unit shuts down after a few
seconds, the flame detection circuitry is functional.
Maintenance of Burner Modules and Combustion Chamber
1. After removing the burner modules and sealing gaskets from the recesses, use compressed air
and blow the modules from the convex side to the dished side to blow away debris. Inspect for
deformations and damage to the mesh and the module body.
2. Inspect the combustion chamber below the burners for scale and ash. Using compressed air,
blow out the combustion chamber between the sections to remove all dirt and foreign particles
from the aluminum protrusions. Use a water jet to wash the chamber out. Use care to avoid
wetting the electrical wiring.
3. Inspect the flue duct and flue collector. During this operation, ensure that the condensate drain
pipe is free of blockage so water does not accumulate in the tray. Clean out the condensate tray
of any scale or ash collected from cleaning the combustion chamber.
INSTRUCTION 1.4.3
Unit Reassembly After Maintenance
1. The burner sealing gaskets must be replaced after each burner cleaning. When positioning
the replacement gaskets (P/N 95261173), place them on top of the burner modules and not
between the burner modules and aluminum boiler body.
2. Reassemble all other components previously removed by reversing order of disassembly steps.
3. Before starting the boiler, verify that the condensate siphon and boiler are filled with water
and pump is running.
4. Before opening the gas cock on the burner manifold, make sure that the coupling is securely
tightened. To do this, open the gas cock and check the union for leaks using a soap solution.
5. As soon as a burner is put into operation, check immediately for leakage between the gas valve
and the relevant premixing chamber.
6. Perform the combustion analysis and check combustion parameters per paragraph 7.5.5. in
Modulex boiler Manual, GF-115-H.
INSTRUCTION 1.4.4
The burner sealing gaskets
MUST BE REPLACED
after each and every burner cleaning.
WARNING
!
!
NOTE
Make sure that all gas pressure test nipples previously open, are closed and tight.
END
END

Aerco Modulex MLX Series Specifications

General

Brand	Aerco
Model	Modulex MLX Series
Category	Boiler
Language	English